From 71c689dc2e732d4cb190aaf0edea73116b1611bd Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 27 Apr 2021 14:07:03 +0200 Subject: [PATCH] media: v4l2-ctrls: split up into four source files The v4l2-ctrls.c source has become much too big, so split it up into four separate parts: v4l2-ctrls-core.c: contains the core framework code v4l2-ctrls-api.c: contains the uAPI interface to the framework v4l2-ctrls-defs.c: contains the control definitions v4l2-ctrls-request.c: contains the Request API helpers And it adds a new v4l2-ctrls-priv.h. No code was changed, but a number of checkpatch.pl warnings were fixed (alignment, f == NULL -> !f, long comment block coding style, unsigned -> unsigned int). The copyright statements were updated as well since they were quite out of date. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- .../media/v4l/ext-ctrls-codec-stateless.rst | 4 +- drivers/media/v4l2-core/Makefile | 5 +- drivers/media/v4l2-core/v4l2-ctrls-api.c | 1225 +++++ drivers/media/v4l2-core/v4l2-ctrls-core.c | 1939 ++++++++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1575 ++++++ drivers/media/v4l2-core/v4l2-ctrls-priv.h | 96 + drivers/media/v4l2-core/v4l2-ctrls-request.c | 496 ++ drivers/media/v4l2-core/v4l2-ctrls.c | 5111 -------------------- 8 files changed, 5336 insertions(+), 5115 deletions(-) create mode 100644 drivers/media/v4l2-core/v4l2-ctrls-api.c create mode 100644 drivers/media/v4l2-core/v4l2-ctrls-core.c create mode 100644 drivers/media/v4l2-core/v4l2-ctrls-defs.c create mode 100644 drivers/media/v4l2-core/v4l2-ctrls-priv.h create mode 100644 drivers/media/v4l2-core/v4l2-ctrls-request.c delete mode 100644 drivers/media/v4l2-core/v4l2-ctrls.c diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst index 2aa508f..72f5e85 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst @@ -1353,8 +1353,8 @@ FWHT Flags * - __u8 - ``picture_coding_type`` - Picture coding type for the frame covered by the current slice - (V4L2_MPEG2_PICTURE_CODING_TYPE_I, V4L2_MPEG2_PICTURE_CODING_TYPE_P or - V4L2_MPEG2_PICTURE_CODING_TYPE_B). + (V4L2_MPEG2_PIC_CODING_TYPE_I, V4L2_MPEG2_PIC_CODING_TYPE_P or + V4L2_MPEG2_PIC_CODING_TYPE_B). * - __u8 - ``picture_structure`` - Picture structure (1: interlaced top field, 2: interlaced bottom field, diff --git a/drivers/media/v4l2-core/Makefile b/drivers/media/v4l2-core/Makefile index e4cd589..ad967b7 100644 --- a/drivers/media/v4l2-core/Makefile +++ b/drivers/media/v4l2-core/Makefile @@ -6,8 +6,9 @@ tuner-objs := tuner-core.o videodev-objs := v4l2-dev.o v4l2-ioctl.o v4l2-device.o v4l2-fh.o \ - v4l2-event.o v4l2-ctrls.o v4l2-subdev.o \ - v4l2-async.o v4l2-common.o + v4l2-event.o v4l2-subdev.o v4l2-async.o v4l2-common.o \ + v4l2-ctrls-core.o v4l2-ctrls-api.o \ + v4l2-ctrls-request.o v4l2-ctrls-defs.o videodev-$(CONFIG_COMPAT) += v4l2-compat-ioctl32.o videodev-$(CONFIG_TRACEPOINTS) += v4l2-trace.o videodev-$(CONFIG_MEDIA_CONTROLLER) += v4l2-mc.o diff --git a/drivers/media/v4l2-core/v4l2-ctrls-api.c b/drivers/media/v4l2-core/v4l2-ctrls-api.c new file mode 100644 index 0000000..db9baa0b --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-ctrls-api.c @@ -0,0 +1,1225 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * V4L2 controls framework uAPI implementation: + * + * Copyright (C) 2010-2021 Hans Verkuil + */ + +#define pr_fmt(fmt) "v4l2-ctrls: " fmt + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "v4l2-ctrls-priv.h" + +/* Internal temporary helper struct, one for each v4l2_ext_control */ +struct v4l2_ctrl_helper { + /* Pointer to the control reference of the master control */ + struct v4l2_ctrl_ref *mref; + /* The control ref corresponding to the v4l2_ext_control ID field. */ + struct v4l2_ctrl_ref *ref; + /* + * v4l2_ext_control index of the next control belonging to the + * same cluster, or 0 if there isn't any. + */ + u32 next; +}; + +/* + * Helper functions to copy control payload data from kernel space to + * user space and vice versa. + */ + +/* Helper function: copy the given control value back to the caller */ +static int ptr_to_user(struct v4l2_ext_control *c, + struct v4l2_ctrl *ctrl, + union v4l2_ctrl_ptr ptr) +{ + u32 len; + + if (ctrl->is_ptr && !ctrl->is_string) + return copy_to_user(c->ptr, ptr.p_const, c->size) ? + -EFAULT : 0; + + switch (ctrl->type) { + case V4L2_CTRL_TYPE_STRING: + len = strlen(ptr.p_char); + if (c->size < len + 1) { + c->size = ctrl->elem_size; + return -ENOSPC; + } + return copy_to_user(c->string, ptr.p_char, len + 1) ? + -EFAULT : 0; + case V4L2_CTRL_TYPE_INTEGER64: + c->value64 = *ptr.p_s64; + break; + default: + c->value = *ptr.p_s32; + break; + } + return 0; +} + +/* Helper function: copy the current control value back to the caller */ +static int cur_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl) +{ + return ptr_to_user(c, ctrl, ctrl->p_cur); +} + +/* Helper function: copy the new control value back to the caller */ +static int new_to_user(struct v4l2_ext_control *c, + struct v4l2_ctrl *ctrl) +{ + return ptr_to_user(c, ctrl, ctrl->p_new); +} + +/* Helper function: copy the request value back to the caller */ +static int req_to_user(struct v4l2_ext_control *c, + struct v4l2_ctrl_ref *ref) +{ + return ptr_to_user(c, ref->ctrl, ref->p_req); +} + +/* Helper function: copy the initial control value back to the caller */ +static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl) +{ + int idx; + + for (idx = 0; idx < ctrl->elems; idx++) + ctrl->type_ops->init(ctrl, idx, ctrl->p_new); + + return ptr_to_user(c, ctrl, ctrl->p_new); +} + +/* Helper function: copy the caller-provider value to the given control value */ +static int user_to_ptr(struct v4l2_ext_control *c, + struct v4l2_ctrl *ctrl, + union v4l2_ctrl_ptr ptr) +{ + int ret; + u32 size; + + ctrl->is_new = 1; + if (ctrl->is_ptr && !ctrl->is_string) { + unsigned int idx; + + ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0; + if (ret || !ctrl->is_array) + return ret; + for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++) + ctrl->type_ops->init(ctrl, idx, ptr); + return 0; + } + + switch (ctrl->type) { + case V4L2_CTRL_TYPE_INTEGER64: + *ptr.p_s64 = c->value64; + break; + case V4L2_CTRL_TYPE_STRING: + size = c->size; + if (size == 0) + return -ERANGE; + if (size > ctrl->maximum + 1) + size = ctrl->maximum + 1; + ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0; + if (!ret) { + char last = ptr.p_char[size - 1]; + + ptr.p_char[size - 1] = 0; + /* + * If the string was longer than ctrl->maximum, + * then return an error. + */ + if (strlen(ptr.p_char) == ctrl->maximum && last) + return -ERANGE; + } + return ret; + default: + *ptr.p_s32 = c->value; + break; + } + return 0; +} + +/* Helper function: copy the caller-provider value as the new control value */ +static int user_to_new(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl) +{ + return user_to_ptr(c, ctrl, ctrl->p_new); +} + +/* + * VIDIOC_G/TRY/S_EXT_CTRLS implementation + */ + +/* + * Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS: + * + * It is not a fully atomic operation, just best-effort only. After all, if + * multiple controls have to be set through multiple i2c writes (for example) + * then some initial writes may succeed while others fail. Thus leaving the + * system in an inconsistent state. The question is how much effort you are + * willing to spend on trying to make something atomic that really isn't. + * + * From the point of view of an application the main requirement is that + * when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an + * error should be returned without actually affecting any controls. + * + * If all the values are correct, then it is acceptable to just give up + * in case of low-level errors. + * + * It is important though that the application can tell when only a partial + * configuration was done. The way we do that is through the error_idx field + * of struct v4l2_ext_controls: if that is equal to the count field then no + * controls were affected. Otherwise all controls before that index were + * successful in performing their 'get' or 'set' operation, the control at + * the given index failed, and you don't know what happened with the controls + * after the failed one. Since if they were part of a control cluster they + * could have been successfully processed (if a cluster member was encountered + * at index < error_idx), they could have failed (if a cluster member was at + * error_idx), or they may not have been processed yet (if the first cluster + * member appeared after error_idx). + * + * It is all fairly theoretical, though. In practice all you can do is to + * bail out. If error_idx == count, then it is an application bug. If + * error_idx < count then it is only an application bug if the error code was + * EBUSY. That usually means that something started streaming just when you + * tried to set the controls. In all other cases it is a driver/hardware + * problem and all you can do is to retry or bail out. + * + * Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that + * never modifies controls the error_idx is just set to whatever control + * has an invalid value. + */ + +/* + * Prepare for the extended g/s/try functions. + * Find the controls in the control array and do some basic checks. + */ +static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl, + struct v4l2_ext_controls *cs, + struct v4l2_ctrl_helper *helpers, + struct video_device *vdev, + bool get) +{ + struct v4l2_ctrl_helper *h; + bool have_clusters = false; + u32 i; + + for (i = 0, h = helpers; i < cs->count; i++, h++) { + struct v4l2_ext_control *c = &cs->controls[i]; + struct v4l2_ctrl_ref *ref; + struct v4l2_ctrl *ctrl; + u32 id = c->id & V4L2_CTRL_ID_MASK; + + cs->error_idx = i; + + if (cs->which && + cs->which != V4L2_CTRL_WHICH_DEF_VAL && + cs->which != V4L2_CTRL_WHICH_REQUEST_VAL && + V4L2_CTRL_ID2WHICH(id) != cs->which) { + dprintk(vdev, + "invalid which 0x%x or control id 0x%x\n", + cs->which, id); + return -EINVAL; + } + + /* + * Old-style private controls are not allowed for + * extended controls. + */ + if (id >= V4L2_CID_PRIVATE_BASE) { + dprintk(vdev, + "old-style private controls not allowed\n"); + return -EINVAL; + } + ref = find_ref_lock(hdl, id); + if (!ref) { + dprintk(vdev, "cannot find control id 0x%x\n", id); + return -EINVAL; + } + h->ref = ref; + ctrl = ref->ctrl; + if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) { + dprintk(vdev, "control id 0x%x is disabled\n", id); + return -EINVAL; + } + + if (ctrl->cluster[0]->ncontrols > 1) + have_clusters = true; + if (ctrl->cluster[0] != ctrl) + ref = find_ref_lock(hdl, ctrl->cluster[0]->id); + if (ctrl->is_ptr && !ctrl->is_string) { + unsigned int tot_size = ctrl->elems * ctrl->elem_size; + + if (c->size < tot_size) { + /* + * In the get case the application first + * queries to obtain the size of the control. + */ + if (get) { + c->size = tot_size; + return -ENOSPC; + } + dprintk(vdev, + "pointer control id 0x%x size too small, %d bytes but %d bytes needed\n", + id, c->size, tot_size); + return -EFAULT; + } + c->size = tot_size; + } + /* Store the ref to the master control of the cluster */ + h->mref = ref; + /* + * Initially set next to 0, meaning that there is no other + * control in this helper array belonging to the same + * cluster. + */ + h->next = 0; + } + + /* + * We are done if there were no controls that belong to a multi- + * control cluster. + */ + if (!have_clusters) + return 0; + + /* + * The code below figures out in O(n) time which controls in the list + * belong to the same cluster. + */ + + /* This has to be done with the handler lock taken. */ + mutex_lock(hdl->lock); + + /* First zero the helper field in the master control references */ + for (i = 0; i < cs->count; i++) + helpers[i].mref->helper = NULL; + for (i = 0, h = helpers; i < cs->count; i++, h++) { + struct v4l2_ctrl_ref *mref = h->mref; + + /* + * If the mref->helper is set, then it points to an earlier + * helper that belongs to the same cluster. + */ + if (mref->helper) { + /* + * Set the next field of mref->helper to the current + * index: this means that the earlier helper now + * points to the next helper in the same cluster. + */ + mref->helper->next = i; + /* + * mref should be set only for the first helper in the + * cluster, clear the others. + */ + h->mref = NULL; + } + /* Point the mref helper to the current helper struct. */ + mref->helper = h; + } + mutex_unlock(hdl->lock); + return 0; +} + +/* + * Handles the corner case where cs->count == 0. It checks whether the + * specified control class exists. If that class ID is 0, then it checks + * whether there are any controls at all. + */ +static int class_check(struct v4l2_ctrl_handler *hdl, u32 which) +{ + if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL || + which == V4L2_CTRL_WHICH_REQUEST_VAL) + return 0; + return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL; +} + +/* + * Get extended controls. Allocates the helpers array if needed. + * + * Note that v4l2_g_ext_ctrls_common() with 'which' set to + * V4L2_CTRL_WHICH_REQUEST_VAL is only called if the request was + * completed, and in that case valid_p_req is true for all controls. + */ +int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl, + struct v4l2_ext_controls *cs, + struct video_device *vdev) +{ + struct v4l2_ctrl_helper helper[4]; + struct v4l2_ctrl_helper *helpers = helper; + int ret; + int i, j; + bool is_default, is_request; + + is_default = (cs->which == V4L2_CTRL_WHICH_DEF_VAL); + is_request = (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL); + + cs->error_idx = cs->count; + cs->which = V4L2_CTRL_ID2WHICH(cs->which); + + if (!hdl) + return -EINVAL; + + if (cs->count == 0) + return class_check(hdl, cs->which); + + if (cs->count > ARRAY_SIZE(helper)) { + helpers = kvmalloc_array(cs->count, sizeof(helper[0]), + GFP_KERNEL); + if (!helpers) + return -ENOMEM; + } + + ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, true); + cs->error_idx = cs->count; + + for (i = 0; !ret && i < cs->count; i++) + if (helpers[i].ref->ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) + ret = -EACCES; + + for (i = 0; !ret && i < cs->count; i++) { + struct v4l2_ctrl *master; + bool is_volatile = false; + u32 idx = i; + + if (!helpers[i].mref) + continue; + + master = helpers[i].mref->ctrl; + cs->error_idx = i; + + v4l2_ctrl_lock(master); + + /* + * g_volatile_ctrl will update the new control values. + * This makes no sense for V4L2_CTRL_WHICH_DEF_VAL and + * V4L2_CTRL_WHICH_REQUEST_VAL. In the case of requests + * it is v4l2_ctrl_request_complete() that copies the + * volatile controls at the time of request completion + * to the request, so you don't want to do that again. + */ + if (!is_default && !is_request && + ((master->flags & V4L2_CTRL_FLAG_VOLATILE) || + (master->has_volatiles && !is_cur_manual(master)))) { + for (j = 0; j < master->ncontrols; j++) + cur_to_new(master->cluster[j]); + ret = call_op(master, g_volatile_ctrl); + is_volatile = true; + } + + if (ret) { + v4l2_ctrl_unlock(master); + break; + } + + /* + * Copy the default value (if is_default is true), the + * request value (if is_request is true and p_req is valid), + * the new volatile value (if is_volatile is true) or the + * current value. + */ + do { + struct v4l2_ctrl_ref *ref = helpers[idx].ref; + + if (is_default) + ret = def_to_user(cs->controls + idx, ref->ctrl); + else if (is_request && ref->valid_p_req) + ret = req_to_user(cs->controls + idx, ref); + else if (is_volatile) + ret = new_to_user(cs->controls + idx, ref->ctrl); + else + ret = cur_to_user(cs->controls + idx, ref->ctrl); + idx = helpers[idx].next; + } while (!ret && idx); + + v4l2_ctrl_unlock(master); + } + + if (cs->count > ARRAY_SIZE(helper)) + kvfree(helpers); + return ret; +} + +int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev, + struct media_device *mdev, struct v4l2_ext_controls *cs) +{ + if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) + return v4l2_g_ext_ctrls_request(hdl, vdev, mdev, cs); + + return v4l2_g_ext_ctrls_common(hdl, cs, vdev); +} +EXPORT_SYMBOL(v4l2_g_ext_ctrls); + +/* Validate controls. */ +static int validate_ctrls(struct v4l2_ext_controls *cs, + struct v4l2_ctrl_helper *helpers, + struct video_device *vdev, + bool set) +{ + unsigned int i; + int ret = 0; + + cs->error_idx = cs->count; + for (i = 0; i < cs->count; i++) { + struct v4l2_ctrl *ctrl = helpers[i].ref->ctrl; + union v4l2_ctrl_ptr p_new; + + cs->error_idx = i; + + if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) { + dprintk(vdev, + "control id 0x%x is read-only\n", + ctrl->id); + return -EACCES; + } + /* + * This test is also done in try_set_control_cluster() which + * is called in atomic context, so that has the final say, + * but it makes sense to do an up-front check as well. Once + * an error occurs in try_set_control_cluster() some other + * controls may have been set already and we want to do a + * best-effort to avoid that. + */ + if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) { + dprintk(vdev, + "control id 0x%x is grabbed, cannot set\n", + ctrl->id); + return -EBUSY; + } + /* + * Skip validation for now if the payload needs to be copied + * from userspace into kernelspace. We'll validate those later. + */ + if (ctrl->is_ptr) + continue; + if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) + p_new.p_s64 = &cs->controls[i].value64; + else + p_new.p_s32 = &cs->controls[i].value; + ret = validate_new(ctrl, p_new); + if (ret) + return ret; + } + return 0; +} + +/* Try or try-and-set controls */ +int try_set_ext_ctrls_common(struct v4l2_fh *fh, + struct v4l2_ctrl_handler *hdl, + struct v4l2_ext_controls *cs, + struct video_device *vdev, bool set) +{ + struct v4l2_ctrl_helper helper[4]; + struct v4l2_ctrl_helper *helpers = helper; + unsigned int i, j; + int ret; + + cs->error_idx = cs->count; + + /* Default value cannot be changed */ + if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) { + dprintk(vdev, "%s: cannot change default value\n", + video_device_node_name(vdev)); + return -EINVAL; + } + + cs->which = V4L2_CTRL_ID2WHICH(cs->which); + + if (!hdl) { + dprintk(vdev, "%s: invalid null control handler\n", + video_device_node_name(vdev)); + return -EINVAL; + } + + if (cs->count == 0) + return class_check(hdl, cs->which); + + if (cs->count > ARRAY_SIZE(helper)) { + helpers = kvmalloc_array(cs->count, sizeof(helper[0]), + GFP_KERNEL); + if (!helpers) + return -ENOMEM; + } + ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, false); + if (!ret) + ret = validate_ctrls(cs, helpers, vdev, set); + if (ret && set) + cs->error_idx = cs->count; + for (i = 0; !ret && i < cs->count; i++) { + struct v4l2_ctrl *master; + u32 idx = i; + + if (!helpers[i].mref) + continue; + + cs->error_idx = i; + master = helpers[i].mref->ctrl; + v4l2_ctrl_lock(master); + + /* Reset the 'is_new' flags of the cluster */ + for (j = 0; j < master->ncontrols; j++) + if (master->cluster[j]) + master->cluster[j]->is_new = 0; + + /* + * For volatile autoclusters that are currently in auto mode + * we need to discover if it will be set to manual mode. + * If so, then we have to copy the current volatile values + * first since those will become the new manual values (which + * may be overwritten by explicit new values from this set + * of controls). + */ + if (master->is_auto && master->has_volatiles && + !is_cur_manual(master)) { + /* Pick an initial non-manual value */ + s32 new_auto_val = master->manual_mode_value + 1; + u32 tmp_idx = idx; + + do { + /* + * Check if the auto control is part of the + * list, and remember the new value. + */ + if (helpers[tmp_idx].ref->ctrl == master) + new_auto_val = cs->controls[tmp_idx].value; + tmp_idx = helpers[tmp_idx].next; + } while (tmp_idx); + /* + * If the new value == the manual value, then copy + * the current volatile values. + */ + if (new_auto_val == master->manual_mode_value) + update_from_auto_cluster(master); + } + + /* + * Copy the new caller-supplied control values. + * user_to_new() sets 'is_new' to 1. + */ + do { + struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl; + + ret = user_to_new(cs->controls + idx, ctrl); + if (!ret && ctrl->is_ptr) { + ret = validate_new(ctrl, ctrl->p_new); + if (ret) + dprintk(vdev, + "failed to validate control %s (%d)\n", + v4l2_ctrl_get_name(ctrl->id), ret); + } + idx = helpers[idx].next; + } while (!ret && idx); + + if (!ret) + ret = try_or_set_cluster(fh, master, + !hdl->req_obj.req && set, 0); + if (!ret && hdl->req_obj.req && set) { + for (j = 0; j < master->ncontrols; j++) { + struct v4l2_ctrl_ref *ref = + find_ref(hdl, master->cluster[j]->id); + + new_to_req(ref); + } + } + + /* Copy the new values back to userspace. */ + if (!ret) { + idx = i; + do { + ret = new_to_user(cs->controls + idx, + helpers[idx].ref->ctrl); + idx = helpers[idx].next; + } while (!ret && idx); + } + v4l2_ctrl_unlock(master); + } + + if (cs->count > ARRAY_SIZE(helper)) + kvfree(helpers); + return ret; +} + +static int try_set_ext_ctrls(struct v4l2_fh *fh, + struct v4l2_ctrl_handler *hdl, + struct video_device *vdev, + struct media_device *mdev, + struct v4l2_ext_controls *cs, bool set) +{ + int ret; + + if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) + return try_set_ext_ctrls_request(fh, hdl, vdev, mdev, cs, set); + + ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set); + if (ret) + dprintk(vdev, + "%s: try_set_ext_ctrls_common failed (%d)\n", + video_device_node_name(vdev), ret); + + return ret; +} + +int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl, + struct video_device *vdev, + struct media_device *mdev, + struct v4l2_ext_controls *cs) +{ + return try_set_ext_ctrls(NULL, hdl, vdev, mdev, cs, false); +} +EXPORT_SYMBOL(v4l2_try_ext_ctrls); + +int v4l2_s_ext_ctrls(struct v4l2_fh *fh, + struct v4l2_ctrl_handler *hdl, + struct video_device *vdev, + struct media_device *mdev, + struct v4l2_ext_controls *cs) +{ + return try_set_ext_ctrls(fh, hdl, vdev, mdev, cs, true); +} +EXPORT_SYMBOL(v4l2_s_ext_ctrls); + +/* + * VIDIOC_G/S_CTRL implementation + */ + +/* Helper function to get a single control */ +static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c) +{ + struct v4l2_ctrl *master = ctrl->cluster[0]; + int ret = 0; + int i; + + /* Compound controls are not supported. The new_to_user() and + * cur_to_user() calls below would need to be modified not to access + * userspace memory when called from get_ctrl(). + */ + if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64) + return -EINVAL; + + if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) + return -EACCES; + + v4l2_ctrl_lock(master); + /* g_volatile_ctrl will update the current control values */ + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { + for (i = 0; i < master->ncontrols; i++) + cur_to_new(master->cluster[i]); + ret = call_op(master, g_volatile_ctrl); + new_to_user(c, ctrl); + } else { + cur_to_user(c, ctrl); + } + v4l2_ctrl_unlock(master); + return ret; +} + +int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control) +{ + struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); + struct v4l2_ext_control c; + int ret; + + if (!ctrl || !ctrl->is_int) + return -EINVAL; + ret = get_ctrl(ctrl, &c); + control->value = c.value; + return ret; +} +EXPORT_SYMBOL(v4l2_g_ctrl); + +/* Helper function for VIDIOC_S_CTRL compatibility */ +static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) +{ + struct v4l2_ctrl *master = ctrl->cluster[0]; + int ret; + int i; + + /* Reset the 'is_new' flags of the cluster */ + for (i = 0; i < master->ncontrols; i++) + if (master->cluster[i]) + master->cluster[i]->is_new = 0; + + ret = validate_new(ctrl, ctrl->p_new); + if (ret) + return ret; + + /* + * For autoclusters with volatiles that are switched from auto to + * manual mode we have to update the current volatile values since + * those will become the initial manual values after such a switch. + */ + if (master->is_auto && master->has_volatiles && ctrl == master && + !is_cur_manual(master) && ctrl->val == master->manual_mode_value) + update_from_auto_cluster(master); + + ctrl->is_new = 1; + return try_or_set_cluster(fh, master, true, ch_flags); +} + +/* Helper function for VIDIOC_S_CTRL compatibility */ +static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, + struct v4l2_ext_control *c) +{ + int ret; + + v4l2_ctrl_lock(ctrl); + user_to_new(c, ctrl); + ret = set_ctrl(fh, ctrl, 0); + if (!ret) + cur_to_user(c, ctrl); + v4l2_ctrl_unlock(ctrl); + return ret; +} + +int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, + struct v4l2_control *control) +{ + struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); + struct v4l2_ext_control c = { control->id }; + int ret; + + if (!ctrl || !ctrl->is_int) + return -EINVAL; + + if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) + return -EACCES; + + c.value = control->value; + ret = set_ctrl_lock(fh, ctrl, &c); + control->value = c.value; + return ret; +} +EXPORT_SYMBOL(v4l2_s_ctrl); + +/* + * Helper functions for drivers to get/set controls. + */ + +s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_ext_control c; + + /* It's a driver bug if this happens. */ + if (WARN_ON(!ctrl->is_int)) + return 0; + c.value = 0; + get_ctrl(ctrl, &c); + return c.value; +} +EXPORT_SYMBOL(v4l2_ctrl_g_ctrl); + +s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl) +{ + struct v4l2_ext_control c; + + /* It's a driver bug if this happens. */ + if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64)) + return 0; + c.value64 = 0; + get_ctrl(ctrl, &c); + return c.value64; +} +EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64); + +int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) +{ + lockdep_assert_held(ctrl->handler->lock); + + /* It's a driver bug if this happens. */ + if (WARN_ON(!ctrl->is_int)) + return -EINVAL; + ctrl->val = val; + return set_ctrl(NULL, ctrl, 0); +} +EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl); + +int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) +{ + lockdep_assert_held(ctrl->handler->lock); + + /* It's a driver bug if this happens. */ + if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64)) + return -EINVAL; + *ctrl->p_new.p_s64 = val; + return set_ctrl(NULL, ctrl, 0); +} +EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64); + +int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s) +{ + lockdep_assert_held(ctrl->handler->lock); + + /* It's a driver bug if this happens. */ + if (WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING)) + return -EINVAL; + strscpy(ctrl->p_new.p_char, s, ctrl->maximum + 1); + return set_ctrl(NULL, ctrl, 0); +} +EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string); + +int __v4l2_ctrl_s_ctrl_compound(struct v4l2_ctrl *ctrl, + enum v4l2_ctrl_type type, const void *p) +{ + lockdep_assert_held(ctrl->handler->lock); + + /* It's a driver bug if this happens. */ + if (WARN_ON(ctrl->type != type)) + return -EINVAL; + memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size); + return set_ctrl(NULL, ctrl, 0); +} +EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_compound); + +/* + * Modify the range of a control. + */ +int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, + s64 min, s64 max, u64 step, s64 def) +{ + bool value_changed; + bool range_changed = false; + int ret; + + lockdep_assert_held(ctrl->handler->lock); + + switch (ctrl->type) { + case V4L2_CTRL_TYPE_INTEGER: + case V4L2_CTRL_TYPE_INTEGER64: + case V4L2_CTRL_TYPE_BOOLEAN: + case V4L2_CTRL_TYPE_MENU: + case V4L2_CTRL_TYPE_INTEGER_MENU: + case V4L2_CTRL_TYPE_BITMASK: + case V4L2_CTRL_TYPE_U8: + case V4L2_CTRL_TYPE_U16: + case V4L2_CTRL_TYPE_U32: + if (ctrl->is_array) + return -EINVAL; + ret = check_range(ctrl->type, min, max, step, def); + if (ret) + return ret; + break; + default: + return -EINVAL; + } + if (ctrl->minimum != min || ctrl->maximum != max || + ctrl->step != step || ctrl->default_value != def) { + range_changed = true; + ctrl->minimum = min; + ctrl->maximum = max; + ctrl->step = step; + ctrl->default_value = def; + } + cur_to_new(ctrl); + if (validate_new(ctrl, ctrl->p_new)) { + if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) + *ctrl->p_new.p_s64 = def; + else + *ctrl->p_new.p_s32 = def; + } + + if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) + value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64; + else + value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32; + if (value_changed) + ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); + else if (range_changed) + send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); + return ret; +} +EXPORT_SYMBOL(__v4l2_ctrl_modify_range); + +/* Implement VIDIOC_QUERY_EXT_CTRL */ +int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc) +{ + const unsigned int next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND; + u32 id = qc->id & V4L2_CTRL_ID_MASK; + struct v4l2_ctrl_ref *ref; + struct v4l2_ctrl *ctrl; + + if (!hdl) + return -EINVAL; + + mutex_lock(hdl->lock); + + /* Try to find it */ + ref = find_ref(hdl, id); + + if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) { + bool is_compound; + /* Match any control that is not hidden */ + unsigned int mask = 1; + bool match = false; + + if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) { + /* Match any hidden control */ + match = true; + } else if ((qc->id & next_flags) == next_flags) { + /* Match any control, compound or not */ + mask = 0; + } + + /* Find the next control with ID > qc->id */ + + /* Did we reach the end of the control list? */ + if (id >= node2id(hdl->ctrl_refs.prev)) { + ref = NULL; /* Yes, so there is no next control */ + } else if (ref) { + /* + * We found a control with the given ID, so just get + * the next valid one in the list. + */ + list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) { + is_compound = ref->ctrl->is_array || + ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES; + if (id < ref->ctrl->id && + (is_compound & mask) == match) + break; + } + if (&ref->node == &hdl->ctrl_refs) + ref = NULL; + } else { + /* + * No control with the given ID exists, so start + * searching for the next largest ID. We know there + * is one, otherwise the first 'if' above would have + * been true. + */ + list_for_each_entry(ref, &hdl->ctrl_refs, node) { + is_compound = ref->ctrl->is_array || + ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES; + if (id < ref->ctrl->id && + (is_compound & mask) == match) + break; + } + if (&ref->node == &hdl->ctrl_refs) + ref = NULL; + } + } + mutex_unlock(hdl->lock); + + if (!ref) + return -EINVAL; + + ctrl = ref->ctrl; + memset(qc, 0, sizeof(*qc)); + if (id >= V4L2_CID_PRIVATE_BASE) + qc->id = id; + else + qc->id = ctrl->id; + strscpy(qc->name, ctrl->name, sizeof(qc->name)); + qc->flags = user_flags(ctrl); + qc->type = ctrl->type; + qc->elem_size = ctrl->elem_size; + qc->elems = ctrl->elems; + qc->nr_of_dims = ctrl->nr_of_dims; + memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0])); + qc->minimum = ctrl->minimum; + qc->maximum = ctrl->maximum; + qc->default_value = ctrl->default_value; + if (ctrl->type == V4L2_CTRL_TYPE_MENU || + ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) + qc->step = 1; + else + qc->step = ctrl->step; + return 0; +} +EXPORT_SYMBOL(v4l2_query_ext_ctrl); + +/* Implement VIDIOC_QUERYCTRL */ +int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc) +{ + struct v4l2_query_ext_ctrl qec = { qc->id }; + int rc; + + rc = v4l2_query_ext_ctrl(hdl, &qec); + if (rc) + return rc; + + qc->id = qec.id; + qc->type = qec.type; + qc->flags = qec.flags; + strscpy(qc->name, qec.name, sizeof(qc->name)); + switch (qc->type) { + case V4L2_CTRL_TYPE_INTEGER: + case V4L2_CTRL_TYPE_BOOLEAN: + case V4L2_CTRL_TYPE_MENU: + case V4L2_CTRL_TYPE_INTEGER_MENU: + case V4L2_CTRL_TYPE_STRING: + case V4L2_CTRL_TYPE_BITMASK: + qc->minimum = qec.minimum; + qc->maximum = qec.maximum; + qc->step = qec.step; + qc->default_value = qec.default_value; + break; + default: + qc->minimum = 0; + qc->maximum = 0; + qc->step = 0; + qc->default_value = 0; + break; + } + return 0; +} +EXPORT_SYMBOL(v4l2_queryctrl); + +/* Implement VIDIOC_QUERYMENU */ +int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm) +{ + struct v4l2_ctrl *ctrl; + u32 i = qm->index; + + ctrl = v4l2_ctrl_find(hdl, qm->id); + if (!ctrl) + return -EINVAL; + + qm->reserved = 0; + /* Sanity checks */ + switch (ctrl->type) { + case V4L2_CTRL_TYPE_MENU: + if (!ctrl->qmenu) + return -EINVAL; + break; + case V4L2_CTRL_TYPE_INTEGER_MENU: + if (!ctrl->qmenu_int) + return -EINVAL; + break; + default: + return -EINVAL; + } + + if (i < ctrl->minimum || i > ctrl->maximum) + return -EINVAL; + + /* Use mask to see if this menu item should be skipped */ + if (ctrl->menu_skip_mask & (1ULL << i)) + return -EINVAL; + /* Empty menu items should also be skipped */ + if (ctrl->type == V4L2_CTRL_TYPE_MENU) { + if (!ctrl->qmenu[i] || ctrl->qmenu[i][0] == '\0') + return -EINVAL; + strscpy(qm->name, ctrl->qmenu[i], sizeof(qm->name)); + } else { + qm->value = ctrl->qmenu_int[i]; + } + return 0; +} +EXPORT_SYMBOL(v4l2_querymenu); + +/* + * VIDIOC_LOG_STATUS helpers + */ + +int v4l2_ctrl_log_status(struct file *file, void *fh) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_fh *vfh = file->private_data; + + if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev) + v4l2_ctrl_handler_log_status(vfh->ctrl_handler, + vfd->v4l2_dev->name); + return 0; +} +EXPORT_SYMBOL(v4l2_ctrl_log_status); + +int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd) +{ + v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); + return 0; +} +EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status); + +/* + * VIDIOC_(UN)SUBSCRIBE_EVENT implementation + */ + +static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, + unsigned int elems) +{ + struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); + + if (!ctrl) + return -EINVAL; + + v4l2_ctrl_lock(ctrl); + list_add_tail(&sev->node, &ctrl->ev_subs); + if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS && + (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) + send_initial_event(sev->fh, ctrl); + v4l2_ctrl_unlock(ctrl); + return 0; +} + +static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev) +{ + struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); + + if (!ctrl) + return; + + v4l2_ctrl_lock(ctrl); + list_del(&sev->node); + v4l2_ctrl_unlock(ctrl); +} + +void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new) +{ + u32 old_changes = old->u.ctrl.changes; + + old->u.ctrl = new->u.ctrl; + old->u.ctrl.changes |= old_changes; +} +EXPORT_SYMBOL(v4l2_ctrl_replace); + +void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new) +{ + new->u.ctrl.changes |= old->u.ctrl.changes; +} +EXPORT_SYMBOL(v4l2_ctrl_merge); + +const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = { + .add = v4l2_ctrl_add_event, + .del = v4l2_ctrl_del_event, + .replace = v4l2_ctrl_replace, + .merge = v4l2_ctrl_merge, +}; +EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops); + +int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + if (sub->type == V4L2_EVENT_CTRL) + return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops); + return -EINVAL; +} +EXPORT_SYMBOL(v4l2_ctrl_subscribe_event); + +int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub) +{ + if (!sd->ctrl_handler) + return -EINVAL; + return v4l2_ctrl_subscribe_event(fh, sub); +} +EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event); + +/* + * poll helper + */ +__poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait) +{ + struct v4l2_fh *fh = file->private_data; + + poll_wait(file, &fh->wait, wait); + if (v4l2_event_pending(fh)) + return EPOLLPRI; + return 0; +} +EXPORT_SYMBOL(v4l2_ctrl_poll); diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c new file mode 100644 index 0000000..0814392 --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c @@ -0,0 +1,1939 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * V4L2 controls framework core implementation. + * + * Copyright (C) 2010-2021 Hans Verkuil + */ + +#include +#include +#include +#include +#include +#include + +#include "v4l2-ctrls-priv.h" + +static const union v4l2_ctrl_ptr ptr_null; + +static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, + u32 changes) +{ + memset(ev, 0, sizeof(*ev)); + ev->type = V4L2_EVENT_CTRL; + ev->id = ctrl->id; + ev->u.ctrl.changes = changes; + ev->u.ctrl.type = ctrl->type; + ev->u.ctrl.flags = user_flags(ctrl); + if (ctrl->is_ptr) + ev->u.ctrl.value64 = 0; + else + ev->u.ctrl.value64 = *ctrl->p_cur.p_s64; + ev->u.ctrl.minimum = ctrl->minimum; + ev->u.ctrl.maximum = ctrl->maximum; + if (ctrl->type == V4L2_CTRL_TYPE_MENU + || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) + ev->u.ctrl.step = 1; + else + ev->u.ctrl.step = ctrl->step; + ev->u.ctrl.default_value = ctrl->default_value; +} + +void send_initial_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl) +{ + struct v4l2_event ev; + u32 changes = V4L2_EVENT_CTRL_CH_FLAGS; + + if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)) + changes |= V4L2_EVENT_CTRL_CH_VALUE; + fill_event(&ev, ctrl, changes); + v4l2_event_queue_fh(fh, &ev); +} + +void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes) +{ + struct v4l2_event ev; + struct v4l2_subscribed_event *sev; + + if (list_empty(&ctrl->ev_subs)) + return; + fill_event(&ev, ctrl, changes); + + list_for_each_entry(sev, &ctrl->ev_subs, node) + if (sev->fh != fh || + (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK)) + v4l2_event_queue_fh(sev->fh, &ev); +} + +static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx, + union v4l2_ctrl_ptr ptr1, + union v4l2_ctrl_ptr ptr2) +{ + switch (ctrl->type) { + case V4L2_CTRL_TYPE_BUTTON: + return false; + case V4L2_CTRL_TYPE_STRING: + idx *= ctrl->elem_size; + /* strings are always 0-terminated */ + return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx); + case V4L2_CTRL_TYPE_INTEGER64: + return ptr1.p_s64[idx] == ptr2.p_s64[idx]; + case V4L2_CTRL_TYPE_U8: + return ptr1.p_u8[idx] == ptr2.p_u8[idx]; + case V4L2_CTRL_TYPE_U16: + return ptr1.p_u16[idx] == ptr2.p_u16[idx]; + case V4L2_CTRL_TYPE_U32: + return ptr1.p_u32[idx] == ptr2.p_u32[idx]; + default: + if (ctrl->is_int) + return ptr1.p_s32[idx] == ptr2.p_s32[idx]; + idx *= ctrl->elem_size; + return !memcmp(ptr1.p_const + idx, ptr2.p_const + idx, + ctrl->elem_size); + } +} + +/* Default intra MPEG-2 quantisation coefficients, from the specification. */ +static const u8 mpeg2_intra_quant_matrix[64] = { + 8, 16, 16, 19, 16, 19, 22, 22, + 22, 22, 22, 22, 26, 24, 26, 27, + 27, 27, 26, 26, 26, 26, 27, 27, + 27, 29, 29, 29, 34, 34, 34, 29, + 29, 29, 27, 27, 29, 29, 32, 32, + 34, 34, 37, 38, 37, 35, 35, 34, + 35, 38, 38, 40, 40, 40, 48, 48, + 46, 46, 56, 56, 58, 69, 69, 83 +}; + +static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx, + union v4l2_ctrl_ptr ptr) +{ + struct v4l2_ctrl_mpeg2_sequence *p_mpeg2_sequence; + struct v4l2_ctrl_mpeg2_picture *p_mpeg2_picture; + struct v4l2_ctrl_mpeg2_quantisation *p_mpeg2_quant; + struct v4l2_ctrl_vp8_frame *p_vp8_frame; + struct v4l2_ctrl_fwht_params *p_fwht_params; + void *p = ptr.p + idx * ctrl->elem_size; + + if (ctrl->p_def.p_const) + memcpy(p, ctrl->p_def.p_const, ctrl->elem_size); + else + memset(p, 0, ctrl->elem_size); + + switch ((u32)ctrl->type) { + case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: + p_mpeg2_sequence = p; + + /* 4:2:0 */ + p_mpeg2_sequence->chroma_format = 1; + break; + case V4L2_CTRL_TYPE_MPEG2_PICTURE: + p_mpeg2_picture = p; + + /* interlaced top field */ + p_mpeg2_picture->picture_structure = V4L2_MPEG2_PIC_TOP_FIELD; + p_mpeg2_picture->picture_coding_type = + V4L2_MPEG2_PIC_CODING_TYPE_I; + break; + case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: + p_mpeg2_quant = p; + + memcpy(p_mpeg2_quant->intra_quantiser_matrix, + mpeg2_intra_quant_matrix, + ARRAY_SIZE(mpeg2_intra_quant_matrix)); + /* + * The default non-intra MPEG-2 quantisation + * coefficients are all 16, as per the specification. + */ + memset(p_mpeg2_quant->non_intra_quantiser_matrix, 16, + sizeof(p_mpeg2_quant->non_intra_quantiser_matrix)); + break; + case V4L2_CTRL_TYPE_VP8_FRAME: + p_vp8_frame = p; + p_vp8_frame->num_dct_parts = 1; + break; + case V4L2_CTRL_TYPE_FWHT_PARAMS: + p_fwht_params = p; + p_fwht_params->version = V4L2_FWHT_VERSION; + p_fwht_params->width = 1280; + p_fwht_params->height = 720; + p_fwht_params->flags = V4L2_FWHT_FL_PIXENC_YUV | + (2 << V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); + break; + } +} + +static void std_init(const struct v4l2_ctrl *ctrl, u32 idx, + union v4l2_ctrl_ptr ptr) +{ + switch (ctrl->type) { + case V4L2_CTRL_TYPE_STRING: + idx *= ctrl->elem_size; + memset(ptr.p_char + idx, ' ', ctrl->minimum); + ptr.p_char[idx + ctrl->minimum] = '\0'; + break; + case V4L2_CTRL_TYPE_INTEGER64: + ptr.p_s64[idx] = ctrl->default_value; + break; + case V4L2_CTRL_TYPE_INTEGER: + case V4L2_CTRL_TYPE_INTEGER_MENU: + case V4L2_CTRL_TYPE_MENU: + case V4L2_CTRL_TYPE_BITMASK: + case V4L2_CTRL_TYPE_BOOLEAN: + ptr.p_s32[idx] = ctrl->default_value; + break; + case V4L2_CTRL_TYPE_BUTTON: + case V4L2_CTRL_TYPE_CTRL_CLASS: + ptr.p_s32[idx] = 0; + break; + case V4L2_CTRL_TYPE_U8: + ptr.p_u8[idx] = ctrl->default_value; + break; + case V4L2_CTRL_TYPE_U16: + ptr.p_u16[idx] = ctrl->default_value; + break; + case V4L2_CTRL_TYPE_U32: + ptr.p_u32[idx] = ctrl->default_value; + break; + default: + std_init_compound(ctrl, idx, ptr); + break; + } +} + +static void std_log(const struct v4l2_ctrl *ctrl) +{ + union v4l2_ctrl_ptr ptr = ctrl->p_cur; + + if (ctrl->is_array) { + unsigned i; + + for (i = 0; i < ctrl->nr_of_dims; i++) + pr_cont("[%u]", ctrl->dims[i]); + pr_cont(" "); + } + + switch (ctrl->type) { + case V4L2_CTRL_TYPE_INTEGER: + pr_cont("%d", *ptr.p_s32); + break; + case V4L2_CTRL_TYPE_BOOLEAN: + pr_cont("%s", *ptr.p_s32 ? "true" : "false"); + break; + case V4L2_CTRL_TYPE_MENU: + pr_cont("%s", ctrl->qmenu[*ptr.p_s32]); + break; + case V4L2_CTRL_TYPE_INTEGER_MENU: + pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]); + break; + case V4L2_CTRL_TYPE_BITMASK: + pr_cont("0x%08x", *ptr.p_s32); + break; + case V4L2_CTRL_TYPE_INTEGER64: + pr_cont("%lld", *ptr.p_s64); + break; + case V4L2_CTRL_TYPE_STRING: + pr_cont("%s", ptr.p_char); + break; + case V4L2_CTRL_TYPE_U8: + pr_cont("%u", (unsigned)*ptr.p_u8); + break; + case V4L2_CTRL_TYPE_U16: + pr_cont("%u", (unsigned)*ptr.p_u16); + break; + case V4L2_CTRL_TYPE_U32: + pr_cont("%u", (unsigned)*ptr.p_u32); + break; + case V4L2_CTRL_TYPE_H264_SPS: + pr_cont("H264_SPS"); + break; + case V4L2_CTRL_TYPE_H264_PPS: + pr_cont("H264_PPS"); + break; + case V4L2_CTRL_TYPE_H264_SCALING_MATRIX: + pr_cont("H264_SCALING_MATRIX"); + break; + case V4L2_CTRL_TYPE_H264_SLICE_PARAMS: + pr_cont("H264_SLICE_PARAMS"); + break; + case V4L2_CTRL_TYPE_H264_DECODE_PARAMS: + pr_cont("H264_DECODE_PARAMS"); + break; + case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS: + pr_cont("H264_PRED_WEIGHTS"); + break; + case V4L2_CTRL_TYPE_FWHT_PARAMS: + pr_cont("FWHT_PARAMS"); + break; + case V4L2_CTRL_TYPE_VP8_FRAME: + pr_cont("VP8_FRAME"); + break; + case V4L2_CTRL_TYPE_HDR10_CLL_INFO: + pr_cont("HDR10_CLL_INFO"); + break; + case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY: + pr_cont("HDR10_MASTERING_DISPLAY"); + break; + case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: + pr_cont("MPEG2_QUANTISATION"); + break; + case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: + pr_cont("MPEG2_SEQUENCE"); + break; + case V4L2_CTRL_TYPE_MPEG2_PICTURE: + pr_cont("MPEG2_PICTURE"); + break; + default: + pr_cont("unknown type %d", ctrl->type); + break; + } +} + +/* + * Round towards the closest legal value. Be careful when we are + * close to the maximum range of the control type to prevent + * wrap-arounds. + */ +#define ROUND_TO_RANGE(val, offset_type, ctrl) \ +({ \ + offset_type offset; \ + if ((ctrl)->maximum >= 0 && \ + val >= (ctrl)->maximum - (s32)((ctrl)->step / 2)) \ + val = (ctrl)->maximum; \ + else \ + val += (s32)((ctrl)->step / 2); \ + val = clamp_t(typeof(val), val, \ + (ctrl)->minimum, (ctrl)->maximum); \ + offset = (val) - (ctrl)->minimum; \ + offset = (ctrl)->step * (offset / (u32)(ctrl)->step); \ + val = (ctrl)->minimum + offset; \ + 0; \ +}) + +/* Validate a new control */ + +#define zero_padding(s) \ + memset(&(s).padding, 0, sizeof((s).padding)) +#define zero_reserved(s) \ + memset(&(s).reserved, 0, sizeof((s).reserved)) + +/* + * Compound controls validation requires setting unused fields/flags to zero + * in order to properly detect unchanged controls with std_equal's memcmp. + */ +static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx, + union v4l2_ctrl_ptr ptr) +{ + struct v4l2_ctrl_mpeg2_sequence *p_mpeg2_sequence; + struct v4l2_ctrl_mpeg2_picture *p_mpeg2_picture; + struct v4l2_ctrl_vp8_frame *p_vp8_frame; + struct v4l2_ctrl_fwht_params *p_fwht_params; + struct v4l2_ctrl_h264_sps *p_h264_sps; + struct v4l2_ctrl_h264_pps *p_h264_pps; + struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights; + struct v4l2_ctrl_h264_slice_params *p_h264_slice_params; + struct v4l2_ctrl_h264_decode_params *p_h264_dec_params; + struct v4l2_ctrl_hevc_sps *p_hevc_sps; + struct v4l2_ctrl_hevc_pps *p_hevc_pps; + struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params; + struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering; + struct v4l2_area *area; + void *p = ptr.p + idx * ctrl->elem_size; + unsigned int i; + + switch ((u32)ctrl->type) { + case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: + p_mpeg2_sequence = p; + + switch (p_mpeg2_sequence->chroma_format) { + case 1: /* 4:2:0 */ + case 2: /* 4:2:2 */ + case 3: /* 4:4:4 */ + break; + default: + return -EINVAL; + } + break; + + case V4L2_CTRL_TYPE_MPEG2_PICTURE: + p_mpeg2_picture = p; + + switch (p_mpeg2_picture->intra_dc_precision) { + case 0: /* 8 bits */ + case 1: /* 9 bits */ + case 2: /* 10 bits */ + case 3: /* 11 bits */ + break; + default: + return -EINVAL; + } + + switch (p_mpeg2_picture->picture_structure) { + case V4L2_MPEG2_PIC_TOP_FIELD: + case V4L2_MPEG2_PIC_BOTTOM_FIELD: + case V4L2_MPEG2_PIC_FRAME: + break; + default: + return -EINVAL; + } + + switch (p_mpeg2_picture->picture_coding_type) { + case V4L2_MPEG2_PIC_CODING_TYPE_I: + case V4L2_MPEG2_PIC_CODING_TYPE_P: + case V4L2_MPEG2_PIC_CODING_TYPE_B: + break; + default: + return -EINVAL; + } + zero_reserved(*p_mpeg2_picture); + break; + + case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: + break; + + case V4L2_CTRL_TYPE_FWHT_PARAMS: + p_fwht_params = p; + if (p_fwht_params->version < V4L2_FWHT_VERSION) + return -EINVAL; + if (!p_fwht_params->width || !p_fwht_params->height) + return -EINVAL; + break; + + case V4L2_CTRL_TYPE_H264_SPS: + p_h264_sps = p; + + /* Some syntax elements are only conditionally valid */ + if (p_h264_sps->pic_order_cnt_type != 0) { + p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0; + } else if (p_h264_sps->pic_order_cnt_type != 1) { + p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0; + p_h264_sps->offset_for_non_ref_pic = 0; + p_h264_sps->offset_for_top_to_bottom_field = 0; + memset(&p_h264_sps->offset_for_ref_frame, 0, + sizeof(p_h264_sps->offset_for_ref_frame)); + } + + if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) { + p_h264_sps->chroma_format_idc = 1; + p_h264_sps->bit_depth_luma_minus8 = 0; + p_h264_sps->bit_depth_chroma_minus8 = 0; + + p_h264_sps->flags &= + ~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS; + + if (p_h264_sps->chroma_format_idc < 3) + p_h264_sps->flags &= + ~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE; + } + + if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY) + p_h264_sps->flags &= + ~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD; + + /* + * Chroma 4:2:2 format require at least High 4:2:2 profile. + * + * The H264 specification and well-known parser implementations + * use profile-idc values directly, as that is clearer and + * less ambiguous. We do the same here. + */ + if (p_h264_sps->profile_idc < 122 && + p_h264_sps->chroma_format_idc > 1) + return -EINVAL; + /* Chroma 4:4:4 format require at least High 4:2:2 profile */ + if (p_h264_sps->profile_idc < 244 && + p_h264_sps->chroma_format_idc > 2) + return -EINVAL; + if (p_h264_sps->chroma_format_idc > 3) + return -EINVAL; + + if (p_h264_sps->bit_depth_luma_minus8 > 6) + return -EINVAL; + if (p_h264_sps->bit_depth_chroma_minus8 > 6) + return -EINVAL; + if (p_h264_sps->log2_max_frame_num_minus4 > 12) + return -EINVAL; + if (p_h264_sps->pic_order_cnt_type > 2) + return -EINVAL; + if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12) + return -EINVAL; + if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN) + return -EINVAL; + break; + + case V4L2_CTRL_TYPE_H264_PPS: + p_h264_pps = p; + + if (p_h264_pps->num_slice_groups_minus1 > 7) + return -EINVAL; + if (p_h264_pps->num_ref_idx_l0_default_active_minus1 > + (V4L2_H264_REF_LIST_LEN - 1)) + return -EINVAL; + if (p_h264_pps->num_ref_idx_l1_default_active_minus1 > + (V4L2_H264_REF_LIST_LEN - 1)) + return -EINVAL; + if (p_h264_pps->weighted_bipred_idc > 2) + return -EINVAL; + /* + * pic_init_qp_minus26 shall be in the range of + * -(26 + QpBdOffset_y) to +25, inclusive, + * where QpBdOffset_y is 6 * bit_depth_luma_minus8 + */ + if (p_h264_pps->pic_init_qp_minus26 < -62 || + p_h264_pps->pic_init_qp_minus26 > 25) + return -EINVAL; + if (p_h264_pps->pic_init_qs_minus26 < -26 || + p_h264_pps->pic_init_qs_minus26 > 25) + return -EINVAL; + if (p_h264_pps->chroma_qp_index_offset < -12 || + p_h264_pps->chroma_qp_index_offset > 12) + return -EINVAL; + if (p_h264_pps->second_chroma_qp_index_offset < -12 || + p_h264_pps->second_chroma_qp_index_offset > 12) + return -EINVAL; + break; + + case V4L2_CTRL_TYPE_H264_SCALING_MATRIX: + break; + + case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS: + p_h264_pred_weights = p; + + if (p_h264_pred_weights->luma_log2_weight_denom > 7) + return -EINVAL; + if (p_h264_pred_weights->chroma_log2_weight_denom > 7) + return -EINVAL; + break; + + case V4L2_CTRL_TYPE_H264_SLICE_PARAMS: + p_h264_slice_params = p; + + if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B) + p_h264_slice_params->flags &= + ~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED; + + if (p_h264_slice_params->colour_plane_id > 2) + return -EINVAL; + if (p_h264_slice_params->cabac_init_idc > 2) + return -EINVAL; + if (p_h264_slice_params->disable_deblocking_filter_idc > 2) + return -EINVAL; + if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 || + p_h264_slice_params->slice_alpha_c0_offset_div2 > 6) + return -EINVAL; + if (p_h264_slice_params->slice_beta_offset_div2 < -6 || + p_h264_slice_params->slice_beta_offset_div2 > 6) + return -EINVAL; + + if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I || + p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI) + p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0; + if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B) + p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0; + + if (p_h264_slice_params->num_ref_idx_l0_active_minus1 > + (V4L2_H264_REF_LIST_LEN - 1)) + return -EINVAL; + if (p_h264_slice_params->num_ref_idx_l1_active_minus1 > + (V4L2_H264_REF_LIST_LEN - 1)) + return -EINVAL; + zero_reserved(*p_h264_slice_params); + break; + + case V4L2_CTRL_TYPE_H264_DECODE_PARAMS: + p_h264_dec_params = p; + + if (p_h264_dec_params->nal_ref_idc > 3) + return -EINVAL; + for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) { + struct v4l2_h264_dpb_entry *dpb_entry = + &p_h264_dec_params->dpb[i]; + + zero_reserved(*dpb_entry); + } + zero_reserved(*p_h264_dec_params); + break; + + case V4L2_CTRL_TYPE_VP8_FRAME: + p_vp8_frame = p; + + switch (p_vp8_frame->num_dct_parts) { + case 1: + case 2: + case 4: + case 8: + break; + default: + return -EINVAL; + } + zero_padding(p_vp8_frame->segment); + zero_padding(p_vp8_frame->lf); + zero_padding(p_vp8_frame->quant); + zero_padding(p_vp8_frame->entropy); + zero_padding(p_vp8_frame->coder_state); + break; + + case V4L2_CTRL_TYPE_HEVC_SPS: + p_hevc_sps = p; + + if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) { + p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0; + p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0; + p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0; + p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0; + } + + if (!(p_hevc_sps->flags & + V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT)) + p_hevc_sps->num_long_term_ref_pics_sps = 0; + break; + + case V4L2_CTRL_TYPE_HEVC_PPS: + p_hevc_pps = p; + + if (!(p_hevc_pps->flags & + V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED)) + p_hevc_pps->diff_cu_qp_delta_depth = 0; + + if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) { + p_hevc_pps->num_tile_columns_minus1 = 0; + p_hevc_pps->num_tile_rows_minus1 = 0; + memset(&p_hevc_pps->column_width_minus1, 0, + sizeof(p_hevc_pps->column_width_minus1)); + memset(&p_hevc_pps->row_height_minus1, 0, + sizeof(p_hevc_pps->row_height_minus1)); + + p_hevc_pps->flags &= + ~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED; + } + + if (p_hevc_pps->flags & + V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) { + p_hevc_pps->pps_beta_offset_div2 = 0; + p_hevc_pps->pps_tc_offset_div2 = 0; + } + + zero_padding(*p_hevc_pps); + break; + + case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS: + p_hevc_slice_params = p; + + if (p_hevc_slice_params->num_active_dpb_entries > + V4L2_HEVC_DPB_ENTRIES_NUM_MAX) + return -EINVAL; + + zero_padding(p_hevc_slice_params->pred_weight_table); + + for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries; + i++) { + struct v4l2_hevc_dpb_entry *dpb_entry = + &p_hevc_slice_params->dpb[i]; + + zero_padding(*dpb_entry); + } + + zero_padding(*p_hevc_slice_params); + break; + + case V4L2_CTRL_TYPE_HDR10_CLL_INFO: + break; + + case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY: + p_hdr10_mastering = p; + + for (i = 0; i < 3; ++i) { + if (p_hdr10_mastering->display_primaries_x[i] < + V4L2_HDR10_MASTERING_PRIMARIES_X_LOW || + p_hdr10_mastering->display_primaries_x[i] > + V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH || + p_hdr10_mastering->display_primaries_y[i] < + V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW || + p_hdr10_mastering->display_primaries_y[i] > + V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH) + return -EINVAL; + } + + if (p_hdr10_mastering->white_point_x < + V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW || + p_hdr10_mastering->white_point_x > + V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH || + p_hdr10_mastering->white_point_y < + V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW || + p_hdr10_mastering->white_point_y > + V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH) + return -EINVAL; + + if (p_hdr10_mastering->max_display_mastering_luminance < + V4L2_HDR10_MASTERING_MAX_LUMA_LOW || + p_hdr10_mastering->max_display_mastering_luminance > + V4L2_HDR10_MASTERING_MAX_LUMA_HIGH || + p_hdr10_mastering->min_display_mastering_luminance < + V4L2_HDR10_MASTERING_MIN_LUMA_LOW || + p_hdr10_mastering->min_display_mastering_luminance > + V4L2_HDR10_MASTERING_MIN_LUMA_HIGH) + return -EINVAL; + + /* The following restriction comes from ITU-T Rec. H.265 spec */ + if (p_hdr10_mastering->max_display_mastering_luminance == + V4L2_HDR10_MASTERING_MAX_LUMA_LOW && + p_hdr10_mastering->min_display_mastering_luminance == + V4L2_HDR10_MASTERING_MIN_LUMA_HIGH) + return -EINVAL; + + break; + + case V4L2_CTRL_TYPE_AREA: + area = p; + if (!area->width || !area->height) + return -EINVAL; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx, + union v4l2_ctrl_ptr ptr) +{ + size_t len; + u64 offset; + s64 val; + + switch ((u32)ctrl->type) { + case V4L2_CTRL_TYPE_INTEGER: + return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl); + case V4L2_CTRL_TYPE_INTEGER64: + /* + * We can't use the ROUND_TO_RANGE define here due to + * the u64 divide that needs special care. + */ + val = ptr.p_s64[idx]; + if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2)) + val = ctrl->maximum; + else + val += (s64)(ctrl->step / 2); + val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum); + offset = val - ctrl->minimum; + do_div(offset, ctrl->step); + ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step; + return 0; + case V4L2_CTRL_TYPE_U8: + return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl); + case V4L2_CTRL_TYPE_U16: + return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl); + case V4L2_CTRL_TYPE_U32: + return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl); + + case V4L2_CTRL_TYPE_BOOLEAN: + ptr.p_s32[idx] = !!ptr.p_s32[idx]; + return 0; + + case V4L2_CTRL_TYPE_MENU: + case V4L2_CTRL_TYPE_INTEGER_MENU: + if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum) + return -ERANGE; + if (ptr.p_s32[idx] < BITS_PER_LONG_LONG && + (ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx]))) + return -EINVAL; + if (ctrl->type == V4L2_CTRL_TYPE_MENU && + ctrl->qmenu[ptr.p_s32[idx]][0] == '\0') + return -EINVAL; + return 0; + + case V4L2_CTRL_TYPE_BITMASK: + ptr.p_s32[idx] &= ctrl->maximum; + return 0; + + case V4L2_CTRL_TYPE_BUTTON: + case V4L2_CTRL_TYPE_CTRL_CLASS: + ptr.p_s32[idx] = 0; + return 0; + + case V4L2_CTRL_TYPE_STRING: + idx *= ctrl->elem_size; + len = strlen(ptr.p_char + idx); + if (len < ctrl->minimum) + return -ERANGE; + if ((len - (u32)ctrl->minimum) % (u32)ctrl->step) + return -ERANGE; + return 0; + + default: + return std_validate_compound(ctrl, idx, ptr); + } +} + +static const struct v4l2_ctrl_type_ops std_type_ops = { + .equal = std_equal, + .init = std_init, + .log = std_log, + .validate = std_validate, +}; + +void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv) +{ + if (!ctrl) + return; + if (!notify) { + ctrl->call_notify = 0; + return; + } + if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify)) + return; + ctrl->handler->notify = notify; + ctrl->handler->notify_priv = priv; + ctrl->call_notify = 1; +} +EXPORT_SYMBOL(v4l2_ctrl_notify); + +/* Copy the one value to another. */ +static void ptr_to_ptr(struct v4l2_ctrl *ctrl, + union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to) +{ + if (ctrl == NULL) + return; + memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size); +} + +/* Copy the new value to the current value. */ +void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) +{ + bool changed; + + if (ctrl == NULL) + return; + + /* has_changed is set by cluster_changed */ + changed = ctrl->has_changed; + if (changed) + ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur); + + if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) { + /* Note: CH_FLAGS is only set for auto clusters. */ + ctrl->flags &= + ~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE); + if (!is_cur_manual(ctrl->cluster[0])) { + ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; + if (ctrl->cluster[0]->has_volatiles) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + } + fh = NULL; + } + if (changed || ch_flags) { + /* If a control was changed that was not one of the controls + modified by the application, then send the event to all. */ + if (!ctrl->is_new) + fh = NULL; + send_event(fh, ctrl, + (changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags); + if (ctrl->call_notify && changed && ctrl->handler->notify) + ctrl->handler->notify(ctrl, ctrl->handler->notify_priv); + } +} + +/* Copy the current value to the new value */ +void cur_to_new(struct v4l2_ctrl *ctrl) +{ + if (ctrl == NULL) + return; + ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new); +} + +/* Copy the new value to the request value */ +void new_to_req(struct v4l2_ctrl_ref *ref) +{ + if (!ref) + return; + ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req); + ref->valid_p_req = true; +} + +/* Copy the current value to the request value */ +void cur_to_req(struct v4l2_ctrl_ref *ref) +{ + if (!ref) + return; + ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->p_req); + ref->valid_p_req = true; +} + +/* Copy the request value to the new value */ +void req_to_new(struct v4l2_ctrl_ref *ref) +{ + if (!ref) + return; + if (ref->valid_p_req) + ptr_to_ptr(ref->ctrl, ref->p_req, ref->ctrl->p_new); + else + ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new); +} + +/* Control range checking */ +int check_range(enum v4l2_ctrl_type type, + s64 min, s64 max, u64 step, s64 def) +{ + switch (type) { + case V4L2_CTRL_TYPE_BOOLEAN: + if (step != 1 || max > 1 || min < 0) + return -ERANGE; + fallthrough; + case V4L2_CTRL_TYPE_U8: + case V4L2_CTRL_TYPE_U16: + case V4L2_CTRL_TYPE_U32: + case V4L2_CTRL_TYPE_INTEGER: + case V4L2_CTRL_TYPE_INTEGER64: + if (step == 0 || min > max || def < min || def > max) + return -ERANGE; + return 0; + case V4L2_CTRL_TYPE_BITMASK: + if (step || min || !max || (def & ~max)) + return -ERANGE; + return 0; + case V4L2_CTRL_TYPE_MENU: + case V4L2_CTRL_TYPE_INTEGER_MENU: + if (min > max || def < min || def > max) + return -ERANGE; + /* Note: step == menu_skip_mask for menu controls. + So here we check if the default value is masked out. */ + if (step && ((1 << def) & step)) + return -EINVAL; + return 0; + case V4L2_CTRL_TYPE_STRING: + if (min > max || min < 0 || step < 1 || def) + return -ERANGE; + return 0; + default: + return 0; + } +} + +/* Validate a new control */ +int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new) +{ + unsigned idx; + int err = 0; + + for (idx = 0; !err && idx < ctrl->elems; idx++) + err = ctrl->type_ops->validate(ctrl, idx, p_new); + return err; +} + +/* Set the handler's error code if it wasn't set earlier already */ +static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err) +{ + if (hdl->error == 0) + hdl->error = err; + return err; +} + +/* Initialize the handler */ +int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl, + unsigned nr_of_controls_hint, + struct lock_class_key *key, const char *name) +{ + mutex_init(&hdl->_lock); + hdl->lock = &hdl->_lock; + lockdep_set_class_and_name(hdl->lock, key, name); + INIT_LIST_HEAD(&hdl->ctrls); + INIT_LIST_HEAD(&hdl->ctrl_refs); + hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8; + hdl->buckets = kvmalloc_array(hdl->nr_of_buckets, + sizeof(hdl->buckets[0]), + GFP_KERNEL | __GFP_ZERO); + hdl->error = hdl->buckets ? 0 : -ENOMEM; + v4l2_ctrl_handler_init_request(hdl); + return hdl->error; +} +EXPORT_SYMBOL(v4l2_ctrl_handler_init_class); + +/* Free all controls and control refs */ +void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl) +{ + struct v4l2_ctrl_ref *ref, *next_ref; + struct v4l2_ctrl *ctrl, *next_ctrl; + struct v4l2_subscribed_event *sev, *next_sev; + + if (hdl == NULL || hdl->buckets == NULL) + return; + + v4l2_ctrl_handler_free_request(hdl); + + mutex_lock(hdl->lock); + /* Free all nodes */ + list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) { + list_del(&ref->node); + kfree(ref); + } + /* Free all controls owned by the handler */ + list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) { + list_del(&ctrl->node); + list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node) + list_del(&sev->node); + kvfree(ctrl); + } + kvfree(hdl->buckets); + hdl->buckets = NULL; + hdl->cached = NULL; + hdl->error = 0; + mutex_unlock(hdl->lock); + mutex_destroy(&hdl->_lock); +} +EXPORT_SYMBOL(v4l2_ctrl_handler_free); + +/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer + be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing + with applications that do not use the NEXT_CTRL flag. + + We just find the n-th private user control. It's O(N), but that should not + be an issue in this particular case. */ +static struct v4l2_ctrl_ref *find_private_ref( + struct v4l2_ctrl_handler *hdl, u32 id) +{ + struct v4l2_ctrl_ref *ref; + + id -= V4L2_CID_PRIVATE_BASE; + list_for_each_entry(ref, &hdl->ctrl_refs, node) { + /* Search for private user controls that are compatible with + VIDIOC_G/S_CTRL. */ + if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER && + V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) { + if (!ref->ctrl->is_int) + continue; + if (id == 0) + return ref; + id--; + } + } + return NULL; +} + +/* Find a control with the given ID. */ +struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id) +{ + struct v4l2_ctrl_ref *ref; + int bucket; + + id &= V4L2_CTRL_ID_MASK; + + /* Old-style private controls need special handling */ + if (id >= V4L2_CID_PRIVATE_BASE) + return find_private_ref(hdl, id); + bucket = id % hdl->nr_of_buckets; + + /* Simple optimization: cache the last control found */ + if (hdl->cached && hdl->cached->ctrl->id == id) + return hdl->cached; + + /* Not in cache, search the hash */ + ref = hdl->buckets ? hdl->buckets[bucket] : NULL; + while (ref && ref->ctrl->id != id) + ref = ref->next; + + if (ref) + hdl->cached = ref; /* cache it! */ + return ref; +} + +/* Find a control with the given ID. Take the handler's lock first. */ +struct v4l2_ctrl_ref *find_ref_lock(struct v4l2_ctrl_handler *hdl, u32 id) +{ + struct v4l2_ctrl_ref *ref = NULL; + + if (hdl) { + mutex_lock(hdl->lock); + ref = find_ref(hdl, id); + mutex_unlock(hdl->lock); + } + return ref; +} + +/* Find a control with the given ID. */ +struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id) +{ + struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id); + + return ref ? ref->ctrl : NULL; +} +EXPORT_SYMBOL(v4l2_ctrl_find); + +/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */ +int handler_new_ref(struct v4l2_ctrl_handler *hdl, + struct v4l2_ctrl *ctrl, + struct v4l2_ctrl_ref **ctrl_ref, + bool from_other_dev, bool allocate_req) +{ + struct v4l2_ctrl_ref *ref; + struct v4l2_ctrl_ref *new_ref; + u32 id = ctrl->id; + u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1; + int bucket = id % hdl->nr_of_buckets; /* which bucket to use */ + unsigned int size_extra_req = 0; + + if (ctrl_ref) + *ctrl_ref = NULL; + + /* + * Automatically add the control class if it is not yet present and + * the new control is not a compound control. + */ + if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES && + id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL) + if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0)) + return hdl->error; + + if (hdl->error) + return hdl->error; + + if (allocate_req) + size_extra_req = ctrl->elems * ctrl->elem_size; + new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL); + if (!new_ref) + return handler_set_err(hdl, -ENOMEM); + new_ref->ctrl = ctrl; + new_ref->from_other_dev = from_other_dev; + if (size_extra_req) + new_ref->p_req.p = &new_ref[1]; + + INIT_LIST_HEAD(&new_ref->node); + + mutex_lock(hdl->lock); + + /* Add immediately at the end of the list if the list is empty, or if + the last element in the list has a lower ID. + This ensures that when elements are added in ascending order the + insertion is an O(1) operation. */ + if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) { + list_add_tail(&new_ref->node, &hdl->ctrl_refs); + goto insert_in_hash; + } + + /* Find insert position in sorted list */ + list_for_each_entry(ref, &hdl->ctrl_refs, node) { + if (ref->ctrl->id < id) + continue; + /* Don't add duplicates */ + if (ref->ctrl->id == id) { + kfree(new_ref); + goto unlock; + } + list_add(&new_ref->node, ref->node.prev); + break; + } + +insert_in_hash: + /* Insert the control node in the hash */ + new_ref->next = hdl->buckets[bucket]; + hdl->buckets[bucket] = new_ref; + if (ctrl_ref) + *ctrl_ref = new_ref; + if (ctrl->handler == hdl) { + /* By default each control starts in a cluster of its own. + * new_ref->ctrl is basically a cluster array with one + * element, so that's perfect to use as the cluster pointer. + * But only do this for the handler that owns the control. + */ + ctrl->cluster = &new_ref->ctrl; + ctrl->ncontrols = 1; + } + +unlock: + mutex_unlock(hdl->lock); + return 0; +} + +/* Add a new control */ +static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ops, + const struct v4l2_ctrl_type_ops *type_ops, + u32 id, const char *name, enum v4l2_ctrl_type type, + s64 min, s64 max, u64 step, s64 def, + const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size, + u32 flags, const char * const *qmenu, + const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def, + void *priv) +{ + struct v4l2_ctrl *ctrl; + unsigned sz_extra; + unsigned nr_of_dims = 0; + unsigned elems = 1; + bool is_array; + unsigned tot_ctrl_size; + unsigned idx; + void *data; + int err; + + if (hdl->error) + return NULL; + + while (dims && dims[nr_of_dims]) { + elems *= dims[nr_of_dims]; + nr_of_dims++; + if (nr_of_dims == V4L2_CTRL_MAX_DIMS) + break; + } + is_array = nr_of_dims > 0; + + /* Prefill elem_size for all types handled by std_type_ops */ + switch ((u32)type) { + case V4L2_CTRL_TYPE_INTEGER64: + elem_size = sizeof(s64); + break; + case V4L2_CTRL_TYPE_STRING: + elem_size = max + 1; + break; + case V4L2_CTRL_TYPE_U8: + elem_size = sizeof(u8); + break; + case V4L2_CTRL_TYPE_U16: + elem_size = sizeof(u16); + break; + case V4L2_CTRL_TYPE_U32: + elem_size = sizeof(u32); + break; + case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: + elem_size = sizeof(struct v4l2_ctrl_mpeg2_sequence); + break; + case V4L2_CTRL_TYPE_MPEG2_PICTURE: + elem_size = sizeof(struct v4l2_ctrl_mpeg2_picture); + break; + case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: + elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantisation); + break; + case V4L2_CTRL_TYPE_FWHT_PARAMS: + elem_size = sizeof(struct v4l2_ctrl_fwht_params); + break; + case V4L2_CTRL_TYPE_H264_SPS: + elem_size = sizeof(struct v4l2_ctrl_h264_sps); + break; + case V4L2_CTRL_TYPE_H264_PPS: + elem_size = sizeof(struct v4l2_ctrl_h264_pps); + break; + case V4L2_CTRL_TYPE_H264_SCALING_MATRIX: + elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix); + break; + case V4L2_CTRL_TYPE_H264_SLICE_PARAMS: + elem_size = sizeof(struct v4l2_ctrl_h264_slice_params); + break; + case V4L2_CTRL_TYPE_H264_DECODE_PARAMS: + elem_size = sizeof(struct v4l2_ctrl_h264_decode_params); + break; + case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS: + elem_size = sizeof(struct v4l2_ctrl_h264_pred_weights); + break; + case V4L2_CTRL_TYPE_VP8_FRAME: + elem_size = sizeof(struct v4l2_ctrl_vp8_frame); + break; + case V4L2_CTRL_TYPE_HEVC_SPS: + elem_size = sizeof(struct v4l2_ctrl_hevc_sps); + break; + case V4L2_CTRL_TYPE_HEVC_PPS: + elem_size = sizeof(struct v4l2_ctrl_hevc_pps); + break; + case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS: + elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params); + break; + case V4L2_CTRL_TYPE_HDR10_CLL_INFO: + elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info); + break; + case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY: + elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display); + break; + case V4L2_CTRL_TYPE_AREA: + elem_size = sizeof(struct v4l2_area); + break; + default: + if (type < V4L2_CTRL_COMPOUND_TYPES) + elem_size = sizeof(s32); + break; + } + tot_ctrl_size = elem_size * elems; + + /* Sanity checks */ + if (id == 0 || name == NULL || !elem_size || + id >= V4L2_CID_PRIVATE_BASE || + (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) || + (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) { + handler_set_err(hdl, -ERANGE); + return NULL; + } + err = check_range(type, min, max, step, def); + if (err) { + handler_set_err(hdl, err); + return NULL; + } + if (is_array && + (type == V4L2_CTRL_TYPE_BUTTON || + type == V4L2_CTRL_TYPE_CTRL_CLASS)) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + + sz_extra = 0; + if (type == V4L2_CTRL_TYPE_BUTTON) + flags |= V4L2_CTRL_FLAG_WRITE_ONLY | + V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; + else if (type == V4L2_CTRL_TYPE_CTRL_CLASS) + flags |= V4L2_CTRL_FLAG_READ_ONLY; + else if (type == V4L2_CTRL_TYPE_INTEGER64 || + type == V4L2_CTRL_TYPE_STRING || + type >= V4L2_CTRL_COMPOUND_TYPES || + is_array) + sz_extra += 2 * tot_ctrl_size; + + if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) + sz_extra += elem_size; + + ctrl = kvzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL); + if (ctrl == NULL) { + handler_set_err(hdl, -ENOMEM); + return NULL; + } + + INIT_LIST_HEAD(&ctrl->node); + INIT_LIST_HEAD(&ctrl->ev_subs); + ctrl->handler = hdl; + ctrl->ops = ops; + ctrl->type_ops = type_ops ? type_ops : &std_type_ops; + ctrl->id = id; + ctrl->name = name; + ctrl->type = type; + ctrl->flags = flags; + ctrl->minimum = min; + ctrl->maximum = max; + ctrl->step = step; + ctrl->default_value = def; + ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING; + ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string; + ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64; + ctrl->is_array = is_array; + ctrl->elems = elems; + ctrl->nr_of_dims = nr_of_dims; + if (nr_of_dims) + memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0])); + ctrl->elem_size = elem_size; + if (type == V4L2_CTRL_TYPE_MENU) + ctrl->qmenu = qmenu; + else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) + ctrl->qmenu_int = qmenu_int; + ctrl->priv = priv; + ctrl->cur.val = ctrl->val = def; + data = &ctrl[1]; + + if (!ctrl->is_int) { + ctrl->p_new.p = data; + ctrl->p_cur.p = data + tot_ctrl_size; + } else { + ctrl->p_new.p = &ctrl->val; + ctrl->p_cur.p = &ctrl->cur.val; + } + + if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) { + ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size; + memcpy(ctrl->p_def.p, p_def.p_const, elem_size); + } + + for (idx = 0; idx < elems; idx++) { + ctrl->type_ops->init(ctrl, idx, ctrl->p_cur); + ctrl->type_ops->init(ctrl, idx, ctrl->p_new); + } + + if (handler_new_ref(hdl, ctrl, NULL, false, false)) { + kvfree(ctrl); + return NULL; + } + mutex_lock(hdl->lock); + list_add_tail(&ctrl->node, &hdl->ctrls); + mutex_unlock(hdl->lock); + return ctrl; +} + +struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_config *cfg, void *priv) +{ + bool is_menu; + struct v4l2_ctrl *ctrl; + const char *name = cfg->name; + const char * const *qmenu = cfg->qmenu; + const s64 *qmenu_int = cfg->qmenu_int; + enum v4l2_ctrl_type type = cfg->type; + u32 flags = cfg->flags; + s64 min = cfg->min; + s64 max = cfg->max; + u64 step = cfg->step; + s64 def = cfg->def; + + if (name == NULL) + v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step, + &def, &flags); + + is_menu = (type == V4L2_CTRL_TYPE_MENU || + type == V4L2_CTRL_TYPE_INTEGER_MENU); + if (is_menu) + WARN_ON(step); + else + WARN_ON(cfg->menu_skip_mask); + if (type == V4L2_CTRL_TYPE_MENU && !qmenu) { + qmenu = v4l2_ctrl_get_menu(cfg->id); + } else if (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + + ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name, + type, min, max, + is_menu ? cfg->menu_skip_mask : step, def, + cfg->dims, cfg->elem_size, + flags, qmenu, qmenu_int, cfg->p_def, priv); + if (ctrl) + ctrl->is_private = cfg->is_private; + return ctrl; +} +EXPORT_SYMBOL(v4l2_ctrl_new_custom); + +/* Helper function for standard non-menu controls */ +struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ops, + u32 id, s64 min, s64 max, u64 step, s64 def) +{ + const char *name; + enum v4l2_ctrl_type type; + u32 flags; + + v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); + if (type == V4L2_CTRL_TYPE_MENU || + type == V4L2_CTRL_TYPE_INTEGER_MENU || + type >= V4L2_CTRL_COMPOUND_TYPES) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, + min, max, step, def, NULL, 0, + flags, NULL, NULL, ptr_null, NULL); +} +EXPORT_SYMBOL(v4l2_ctrl_new_std); + +/* Helper function for standard menu controls */ +struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ops, + u32 id, u8 _max, u64 mask, u8 _def) +{ + const char * const *qmenu = NULL; + const s64 *qmenu_int = NULL; + unsigned int qmenu_int_len = 0; + const char *name; + enum v4l2_ctrl_type type; + s64 min; + s64 max = _max; + s64 def = _def; + u64 step; + u32 flags; + + v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); + + if (type == V4L2_CTRL_TYPE_MENU) + qmenu = v4l2_ctrl_get_menu(id); + else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) + qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len); + + if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, + 0, max, mask, def, NULL, 0, + flags, qmenu, qmenu_int, ptr_null, NULL); +} +EXPORT_SYMBOL(v4l2_ctrl_new_std_menu); + +/* Helper function for standard menu controls with driver defined menu */ +struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ops, u32 id, u8 _max, + u64 mask, u8 _def, const char * const *qmenu) +{ + enum v4l2_ctrl_type type; + const char *name; + u32 flags; + u64 step; + s64 min; + s64 max = _max; + s64 def = _def; + + /* v4l2_ctrl_new_std_menu_items() should only be called for + * standard controls without a standard menu. + */ + if (v4l2_ctrl_get_menu(id)) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + + v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); + if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, + 0, max, mask, def, NULL, 0, + flags, qmenu, NULL, ptr_null, NULL); + +} +EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items); + +/* Helper function for standard compound controls */ +struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ops, u32 id, + const union v4l2_ctrl_ptr p_def) +{ + const char *name; + enum v4l2_ctrl_type type; + u32 flags; + s64 min, max, step, def; + + v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); + if (type < V4L2_CTRL_COMPOUND_TYPES) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, + min, max, step, def, NULL, 0, + flags, NULL, NULL, p_def, NULL); +} +EXPORT_SYMBOL(v4l2_ctrl_new_std_compound); + +/* Helper function for standard integer menu controls */ +struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ops, + u32 id, u8 _max, u8 _def, const s64 *qmenu_int) +{ + const char *name; + enum v4l2_ctrl_type type; + s64 min; + u64 step; + s64 max = _max; + s64 def = _def; + u32 flags; + + v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); + if (type != V4L2_CTRL_TYPE_INTEGER_MENU) { + handler_set_err(hdl, -EINVAL); + return NULL; + } + return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, + 0, max, 0, def, NULL, 0, + flags, NULL, qmenu_int, ptr_null, NULL); +} +EXPORT_SYMBOL(v4l2_ctrl_new_int_menu); + +/* Add the controls from another handler to our own. */ +int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, + struct v4l2_ctrl_handler *add, + bool (*filter)(const struct v4l2_ctrl *ctrl), + bool from_other_dev) +{ + struct v4l2_ctrl_ref *ref; + int ret = 0; + + /* Do nothing if either handler is NULL or if they are the same */ + if (!hdl || !add || hdl == add) + return 0; + if (hdl->error) + return hdl->error; + mutex_lock(add->lock); + list_for_each_entry(ref, &add->ctrl_refs, node) { + struct v4l2_ctrl *ctrl = ref->ctrl; + + /* Skip handler-private controls. */ + if (ctrl->is_private) + continue; + /* And control classes */ + if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) + continue; + /* Filter any unwanted controls */ + if (filter && !filter(ctrl)) + continue; + ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false); + if (ret) + break; + } + mutex_unlock(add->lock); + return ret; +} +EXPORT_SYMBOL(v4l2_ctrl_add_handler); + +bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl) +{ + if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX) + return true; + if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX) + return true; + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + case V4L2_CID_AUDIO_LOUDNESS: + return true; + default: + break; + } + return false; +} +EXPORT_SYMBOL(v4l2_ctrl_radio_filter); + +/* Cluster controls */ +void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls) +{ + bool has_volatiles = false; + int i; + + /* The first control is the master control and it must not be NULL */ + if (WARN_ON(ncontrols == 0 || controls[0] == NULL)) + return; + + for (i = 0; i < ncontrols; i++) { + if (controls[i]) { + controls[i]->cluster = controls; + controls[i]->ncontrols = ncontrols; + if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE) + has_volatiles = true; + } + } + controls[0]->has_volatiles = has_volatiles; +} +EXPORT_SYMBOL(v4l2_ctrl_cluster); + +void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls, + u8 manual_val, bool set_volatile) +{ + struct v4l2_ctrl *master = controls[0]; + u32 flag = 0; + int i; + + v4l2_ctrl_cluster(ncontrols, controls); + WARN_ON(ncontrols <= 1); + WARN_ON(manual_val < master->minimum || manual_val > master->maximum); + WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl)); + master->is_auto = true; + master->has_volatiles = set_volatile; + master->manual_mode_value = manual_val; + master->flags |= V4L2_CTRL_FLAG_UPDATE; + + if (!is_cur_manual(master)) + flag = V4L2_CTRL_FLAG_INACTIVE | + (set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0); + + for (i = 1; i < ncontrols; i++) + if (controls[i]) + controls[i]->flags |= flag; +} +EXPORT_SYMBOL(v4l2_ctrl_auto_cluster); + +/* + * Obtain the current volatile values of an autocluster and mark them + * as new. + */ +void update_from_auto_cluster(struct v4l2_ctrl *master) +{ + int i; + + for (i = 1; i < master->ncontrols; i++) + cur_to_new(master->cluster[i]); + if (!call_op(master, g_volatile_ctrl)) + for (i = 1; i < master->ncontrols; i++) + if (master->cluster[i]) + master->cluster[i]->is_new = 1; +} + +/* + * Return non-zero if one or more of the controls in the cluster has a new + * value that differs from the current value. + */ +static int cluster_changed(struct v4l2_ctrl *master) +{ + bool changed = false; + unsigned int idx; + int i; + + for (i = 0; i < master->ncontrols; i++) { + struct v4l2_ctrl *ctrl = master->cluster[i]; + bool ctrl_changed = false; + + if (!ctrl) + continue; + + if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE) { + changed = true; + ctrl_changed = true; + } + + /* + * Set has_changed to false to avoid generating + * the event V4L2_EVENT_CTRL_CH_VALUE + */ + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { + ctrl->has_changed = false; + continue; + } + + for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) + ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, + ctrl->p_cur, ctrl->p_new); + ctrl->has_changed = ctrl_changed; + changed |= ctrl->has_changed; + } + return changed; +} + +/* + * Core function that calls try/s_ctrl and ensures that the new value is + * copied to the current value on a set. + * Must be called with ctrl->handler->lock held. + */ +int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master, + bool set, u32 ch_flags) +{ + bool update_flag; + int ret; + int i; + + /* + * Go through the cluster and either validate the new value or + * (if no new value was set), copy the current value to the new + * value, ensuring a consistent view for the control ops when + * called. + */ + for (i = 0; i < master->ncontrols; i++) { + struct v4l2_ctrl *ctrl = master->cluster[i]; + + if (!ctrl) + continue; + + if (!ctrl->is_new) { + cur_to_new(ctrl); + continue; + } + /* + * Check again: it may have changed since the + * previous check in try_or_set_ext_ctrls(). + */ + if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) + return -EBUSY; + } + + ret = call_op(master, try_ctrl); + + /* Don't set if there is no change */ + if (ret || !set || !cluster_changed(master)) + return ret; + ret = call_op(master, s_ctrl); + if (ret) + return ret; + + /* If OK, then make the new values permanent. */ + update_flag = is_cur_manual(master) != is_new_manual(master); + + for (i = 0; i < master->ncontrols; i++) { + /* + * If we switch from auto to manual mode, and this cluster + * contains volatile controls, then all non-master controls + * have to be marked as changed. The 'new' value contains + * the volatile value (obtained by update_from_auto_cluster), + * which now has to become the current value. + */ + if (i && update_flag && is_new_manual(master) && + master->has_volatiles && master->cluster[i]) + master->cluster[i]->has_changed = true; + + new_to_cur(fh, master->cluster[i], ch_flags | + ((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0)); + } + return 0; +} + +/* Activate/deactivate a control. */ +void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active) +{ + /* invert since the actual flag is called 'inactive' */ + bool inactive = !active; + bool old; + + if (ctrl == NULL) + return; + + if (inactive) + /* set V4L2_CTRL_FLAG_INACTIVE */ + old = test_and_set_bit(4, &ctrl->flags); + else + /* clear V4L2_CTRL_FLAG_INACTIVE */ + old = test_and_clear_bit(4, &ctrl->flags); + if (old != inactive) + send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); +} +EXPORT_SYMBOL(v4l2_ctrl_activate); + +void __v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed) +{ + bool old; + + if (ctrl == NULL) + return; + + lockdep_assert_held(ctrl->handler->lock); + + if (grabbed) + /* set V4L2_CTRL_FLAG_GRABBED */ + old = test_and_set_bit(1, &ctrl->flags); + else + /* clear V4L2_CTRL_FLAG_GRABBED */ + old = test_and_clear_bit(1, &ctrl->flags); + if (old != grabbed) + send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); +} +EXPORT_SYMBOL(__v4l2_ctrl_grab); + +/* Call s_ctrl for all controls owned by the handler */ +int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl) +{ + struct v4l2_ctrl *ctrl; + int ret = 0; + + if (hdl == NULL) + return 0; + + lockdep_assert_held(hdl->lock); + + list_for_each_entry(ctrl, &hdl->ctrls, node) + ctrl->done = false; + + list_for_each_entry(ctrl, &hdl->ctrls, node) { + struct v4l2_ctrl *master = ctrl->cluster[0]; + int i; + + /* Skip if this control was already handled by a cluster. */ + /* Skip button controls and read-only controls. */ + if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON || + (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)) + continue; + + for (i = 0; i < master->ncontrols; i++) { + if (master->cluster[i]) { + cur_to_new(master->cluster[i]); + master->cluster[i]->is_new = 1; + master->cluster[i]->done = true; + } + } + ret = call_op(master, s_ctrl); + if (ret) + break; + } + + return ret; +} +EXPORT_SYMBOL_GPL(__v4l2_ctrl_handler_setup); + +int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl) +{ + int ret; + + if (hdl == NULL) + return 0; + + mutex_lock(hdl->lock); + ret = __v4l2_ctrl_handler_setup(hdl); + mutex_unlock(hdl->lock); + + return ret; +} +EXPORT_SYMBOL(v4l2_ctrl_handler_setup); + +/* Log the control name and value */ +static void log_ctrl(const struct v4l2_ctrl *ctrl, + const char *prefix, const char *colon) +{ + if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY)) + return; + if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) + return; + + pr_info("%s%s%s: ", prefix, colon, ctrl->name); + + ctrl->type_ops->log(ctrl); + + if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE | + V4L2_CTRL_FLAG_GRABBED | + V4L2_CTRL_FLAG_VOLATILE)) { + if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) + pr_cont(" inactive"); + if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED) + pr_cont(" grabbed"); + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) + pr_cont(" volatile"); + } + pr_cont("\n"); +} + +/* Log all controls owned by the handler */ +void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl, + const char *prefix) +{ + struct v4l2_ctrl *ctrl; + const char *colon = ""; + int len; + + if (!hdl) + return; + if (!prefix) + prefix = ""; + len = strlen(prefix); + if (len && prefix[len - 1] != ' ') + colon = ": "; + mutex_lock(hdl->lock); + list_for_each_entry(ctrl, &hdl->ctrls, node) + if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED)) + log_ctrl(ctrl, prefix, colon); + mutex_unlock(hdl->lock); +} +EXPORT_SYMBOL(v4l2_ctrl_handler_log_status); + +int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ctrl_ops, + const struct v4l2_fwnode_device_properties *p) +{ + if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) { + u32 orientation_ctrl; + + switch (p->orientation) { + case V4L2_FWNODE_ORIENTATION_FRONT: + orientation_ctrl = V4L2_CAMERA_ORIENTATION_FRONT; + break; + case V4L2_FWNODE_ORIENTATION_BACK: + orientation_ctrl = V4L2_CAMERA_ORIENTATION_BACK; + break; + case V4L2_FWNODE_ORIENTATION_EXTERNAL: + orientation_ctrl = V4L2_CAMERA_ORIENTATION_EXTERNAL; + break; + default: + return -EINVAL; + } + if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops, + V4L2_CID_CAMERA_ORIENTATION, + V4L2_CAMERA_ORIENTATION_EXTERNAL, 0, + orientation_ctrl)) + return hdl->error; + } + + if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) { + if (!v4l2_ctrl_new_std(hdl, ctrl_ops, + V4L2_CID_CAMERA_SENSOR_ROTATION, + p->rotation, p->rotation, 1, + p->rotation)) + return hdl->error; + } + + return hdl->error; +} +EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties); diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c new file mode 100644 index 0000000..7963c7b --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -0,0 +1,1575 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * V4L2 controls framework control definitions. + * + * Copyright (C) 2010-2021 Hans Verkuil + */ + +#include +#include + +/* + * Returns NULL or a character pointer array containing the menu for + * the given control ID. The pointer array ends with a NULL pointer. + * An empty string signifies a menu entry that is invalid. This allows + * drivers to disable certain options if it is not supported. + */ +const char * const *v4l2_ctrl_get_menu(u32 id) +{ + static const char * const mpeg_audio_sampling_freq[] = { + "44.1 kHz", + "48 kHz", + "32 kHz", + NULL + }; + static const char * const mpeg_audio_encoding[] = { + "MPEG-1/2 Layer I", + "MPEG-1/2 Layer II", + "MPEG-1/2 Layer III", + "MPEG-2/4 AAC", + "AC-3", + NULL + }; + static const char * const mpeg_audio_l1_bitrate[] = { + "32 kbps", + "64 kbps", + "96 kbps", + "128 kbps", + "160 kbps", + "192 kbps", + "224 kbps", + "256 kbps", + "288 kbps", + "320 kbps", + "352 kbps", + "384 kbps", + "416 kbps", + "448 kbps", + NULL + }; + static const char * const mpeg_audio_l2_bitrate[] = { + "32 kbps", + "48 kbps", + "56 kbps", + "64 kbps", + "80 kbps", + "96 kbps", + "112 kbps", + "128 kbps", + "160 kbps", + "192 kbps", + "224 kbps", + "256 kbps", + "320 kbps", + "384 kbps", + NULL + }; + static const char * const mpeg_audio_l3_bitrate[] = { + "32 kbps", + "40 kbps", + "48 kbps", + "56 kbps", + "64 kbps", + "80 kbps", + "96 kbps", + "112 kbps", + "128 kbps", + "160 kbps", + "192 kbps", + "224 kbps", + "256 kbps", + "320 kbps", + NULL + }; + static const char * const mpeg_audio_ac3_bitrate[] = { + "32 kbps", + "40 kbps", + "48 kbps", + "56 kbps", + "64 kbps", + "80 kbps", + "96 kbps", + "112 kbps", + "128 kbps", + "160 kbps", + "192 kbps", + "224 kbps", + "256 kbps", + "320 kbps", + "384 kbps", + "448 kbps", + "512 kbps", + "576 kbps", + "640 kbps", + NULL + }; + static const char * const mpeg_audio_mode[] = { + "Stereo", + "Joint Stereo", + "Dual", + "Mono", + NULL + }; + static const char * const mpeg_audio_mode_extension[] = { + "Bound 4", + "Bound 8", + "Bound 12", + "Bound 16", + NULL + }; + static const char * const mpeg_audio_emphasis[] = { + "No Emphasis", + "50/15 us", + "CCITT J17", + NULL + }; + static const char * const mpeg_audio_crc[] = { + "No CRC", + "16-bit CRC", + NULL + }; + static const char * const mpeg_audio_dec_playback[] = { + "Auto", + "Stereo", + "Left", + "Right", + "Mono", + "Swapped Stereo", + NULL + }; + static const char * const mpeg_video_encoding[] = { + "MPEG-1", + "MPEG-2", + "MPEG-4 AVC", + NULL + }; + static const char * const mpeg_video_aspect[] = { + "1x1", + "4x3", + "16x9", + "2.21x1", + NULL + }; + static const char * const mpeg_video_bitrate_mode[] = { + "Variable Bitrate", + "Constant Bitrate", + "Constant Quality", + NULL + }; + static const char * const mpeg_stream_type[] = { + "MPEG-2 Program Stream", + "MPEG-2 Transport Stream", + "MPEG-1 System Stream", + "MPEG-2 DVD-compatible Stream", + "MPEG-1 VCD-compatible Stream", + "MPEG-2 SVCD-compatible Stream", + NULL + }; + static const char * const mpeg_stream_vbi_fmt[] = { + "No VBI", + "Private Packet, IVTV Format", + NULL + }; + static const char * const camera_power_line_frequency[] = { + "Disabled", + "50 Hz", + "60 Hz", + "Auto", + NULL + }; + static const char * const camera_exposure_auto[] = { + "Auto Mode", + "Manual Mode", + "Shutter Priority Mode", + "Aperture Priority Mode", + NULL + }; + static const char * const camera_exposure_metering[] = { + "Average", + "Center Weighted", + "Spot", + "Matrix", + NULL + }; + static const char * const camera_auto_focus_range[] = { + "Auto", + "Normal", + "Macro", + "Infinity", + NULL + }; + static const char * const colorfx[] = { + "None", + "Black & White", + "Sepia", + "Negative", + "Emboss", + "Sketch", + "Sky Blue", + "Grass Green", + "Skin Whiten", + "Vivid", + "Aqua", + "Art Freeze", + "Silhouette", + "Solarization", + "Antique", + "Set Cb/Cr", + NULL + }; + static const char * const auto_n_preset_white_balance[] = { + "Manual", + "Auto", + "Incandescent", + "Fluorescent", + "Fluorescent H", + "Horizon", + "Daylight", + "Flash", + "Cloudy", + "Shade", + NULL, + }; + static const char * const camera_iso_sensitivity_auto[] = { + "Manual", + "Auto", + NULL + }; + static const char * const scene_mode[] = { + "None", + "Backlight", + "Beach/Snow", + "Candle Light", + "Dusk/Dawn", + "Fall Colors", + "Fireworks", + "Landscape", + "Night", + "Party/Indoor", + "Portrait", + "Sports", + "Sunset", + "Text", + NULL + }; + static const char * const tune_emphasis[] = { + "None", + "50 Microseconds", + "75 Microseconds", + NULL, + }; + static const char * const header_mode[] = { + "Separate Buffer", + "Joined With 1st Frame", + NULL, + }; + static const char * const multi_slice[] = { + "Single", + "Max Macroblocks", + "Max Bytes", + NULL, + }; + static const char * const entropy_mode[] = { + "CAVLC", + "CABAC", + NULL, + }; + static const char * const mpeg_h264_level[] = { + "1", + "1b", + "1.1", + "1.2", + "1.3", + "2", + "2.1", + "2.2", + "3", + "3.1", + "3.2", + "4", + "4.1", + "4.2", + "5", + "5.1", + "5.2", + "6.0", + "6.1", + "6.2", + NULL, + }; + static const char * const h264_loop_filter[] = { + "Enabled", + "Disabled", + "Disabled at Slice Boundary", + NULL, + }; + static const char * const h264_profile[] = { + "Baseline", + "Constrained Baseline", + "Main", + "Extended", + "High", + "High 10", + "High 422", + "High 444 Predictive", + "High 10 Intra", + "High 422 Intra", + "High 444 Intra", + "CAVLC 444 Intra", + "Scalable Baseline", + "Scalable High", + "Scalable High Intra", + "Stereo High", + "Multiview High", + "Constrained High", + NULL, + }; + static const char * const vui_sar_idc[] = { + "Unspecified", + "1:1", + "12:11", + "10:11", + "16:11", + "40:33", + "24:11", + "20:11", + "32:11", + "80:33", + "18:11", + "15:11", + "64:33", + "160:99", + "4:3", + "3:2", + "2:1", + "Extended SAR", + NULL, + }; + static const char * const h264_fp_arrangement_type[] = { + "Checkerboard", + "Column", + "Row", + "Side by Side", + "Top Bottom", + "Temporal", + NULL, + }; + static const char * const h264_fmo_map_type[] = { + "Interleaved Slices", + "Scattered Slices", + "Foreground with Leftover", + "Box Out", + "Raster Scan", + "Wipe Scan", + "Explicit", + NULL, + }; + static const char * const h264_decode_mode[] = { + "Slice-Based", + "Frame-Based", + NULL, + }; + static const char * const h264_start_code[] = { + "No Start Code", + "Annex B Start Code", + NULL, + }; + static const char * const h264_hierarchical_coding_type[] = { + "Hier Coding B", + "Hier Coding P", + NULL, + }; + static const char * const mpeg_mpeg2_level[] = { + "Low", + "Main", + "High 1440", + "High", + NULL, + }; + static const char * const mpeg2_profile[] = { + "Simple", + "Main", + "SNR Scalable", + "Spatially Scalable", + "High", + NULL, + }; + static const char * const mpeg_mpeg4_level[] = { + "0", + "0b", + "1", + "2", + "3", + "3b", + "4", + "5", + NULL, + }; + static const char * const mpeg4_profile[] = { + "Simple", + "Advanced Simple", + "Core", + "Simple Scalable", + "Advanced Coding Efficiency", + NULL, + }; + + static const char * const vpx_golden_frame_sel[] = { + "Use Previous Frame", + "Use Previous Specific Frame", + NULL, + }; + static const char * const vp8_profile[] = { + "0", + "1", + "2", + "3", + NULL, + }; + static const char * const vp9_profile[] = { + "0", + "1", + "2", + "3", + NULL, + }; + static const char * const vp9_level[] = { + "1", + "1.1", + "2", + "2.1", + "3", + "3.1", + "4", + "4.1", + "5", + "5.1", + "5.2", + "6", + "6.1", + "6.2", + NULL, + }; + + static const char * const flash_led_mode[] = { + "Off", + "Flash", + "Torch", + NULL, + }; + static const char * const flash_strobe_source[] = { + "Software", + "External", + NULL, + }; + + static const char * const jpeg_chroma_subsampling[] = { + "4:4:4", + "4:2:2", + "4:2:0", + "4:1:1", + "4:1:0", + "Gray", + NULL, + }; + static const char * const dv_tx_mode[] = { + "DVI-D", + "HDMI", + NULL, + }; + static const char * const dv_rgb_range[] = { + "Automatic", + "RGB Limited Range (16-235)", + "RGB Full Range (0-255)", + NULL, + }; + static const char * const dv_it_content_type[] = { + "Graphics", + "Photo", + "Cinema", + "Game", + "No IT Content", + NULL, + }; + static const char * const detect_md_mode[] = { + "Disabled", + "Global", + "Threshold Grid", + "Region Grid", + NULL, + }; + + static const char * const hevc_profile[] = { + "Main", + "Main Still Picture", + "Main 10", + NULL, + }; + static const char * const hevc_level[] = { + "1", + "2", + "2.1", + "3", + "3.1", + "4", + "4.1", + "5", + "5.1", + "5.2", + "6", + "6.1", + "6.2", + NULL, + }; + static const char * const hevc_hierarchial_coding_type[] = { + "B", + "P", + NULL, + }; + static const char * const hevc_refresh_type[] = { + "None", + "CRA", + "IDR", + NULL, + }; + static const char * const hevc_size_of_length_field[] = { + "0", + "1", + "2", + "4", + NULL, + }; + static const char * const hevc_tier[] = { + "Main", + "High", + NULL, + }; + static const char * const hevc_loop_filter_mode[] = { + "Disabled", + "Enabled", + "Disabled at slice boundary", + "NULL", + }; + static const char * const hevc_decode_mode[] = { + "Slice-Based", + "Frame-Based", + NULL, + }; + static const char * const hevc_start_code[] = { + "No Start Code", + "Annex B Start Code", + NULL, + }; + static const char * const camera_orientation[] = { + "Front", + "Back", + "External", + NULL, + }; + static const char * const mpeg_video_frame_skip[] = { + "Disabled", + "Level Limit", + "VBV/CPB Limit", + NULL, + }; + + switch (id) { + case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: + return mpeg_audio_sampling_freq; + case V4L2_CID_MPEG_AUDIO_ENCODING: + return mpeg_audio_encoding; + case V4L2_CID_MPEG_AUDIO_L1_BITRATE: + return mpeg_audio_l1_bitrate; + case V4L2_CID_MPEG_AUDIO_L2_BITRATE: + return mpeg_audio_l2_bitrate; + case V4L2_CID_MPEG_AUDIO_L3_BITRATE: + return mpeg_audio_l3_bitrate; + case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: + return mpeg_audio_ac3_bitrate; + case V4L2_CID_MPEG_AUDIO_MODE: + return mpeg_audio_mode; + case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: + return mpeg_audio_mode_extension; + case V4L2_CID_MPEG_AUDIO_EMPHASIS: + return mpeg_audio_emphasis; + case V4L2_CID_MPEG_AUDIO_CRC: + return mpeg_audio_crc; + case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: + case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: + return mpeg_audio_dec_playback; + case V4L2_CID_MPEG_VIDEO_ENCODING: + return mpeg_video_encoding; + case V4L2_CID_MPEG_VIDEO_ASPECT: + return mpeg_video_aspect; + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + return mpeg_video_bitrate_mode; + case V4L2_CID_MPEG_STREAM_TYPE: + return mpeg_stream_type; + case V4L2_CID_MPEG_STREAM_VBI_FMT: + return mpeg_stream_vbi_fmt; + case V4L2_CID_POWER_LINE_FREQUENCY: + return camera_power_line_frequency; + case V4L2_CID_EXPOSURE_AUTO: + return camera_exposure_auto; + case V4L2_CID_EXPOSURE_METERING: + return camera_exposure_metering; + case V4L2_CID_AUTO_FOCUS_RANGE: + return camera_auto_focus_range; + case V4L2_CID_COLORFX: + return colorfx; + case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: + return auto_n_preset_white_balance; + case V4L2_CID_ISO_SENSITIVITY_AUTO: + return camera_iso_sensitivity_auto; + case V4L2_CID_SCENE_MODE: + return scene_mode; + case V4L2_CID_TUNE_PREEMPHASIS: + return tune_emphasis; + case V4L2_CID_TUNE_DEEMPHASIS: + return tune_emphasis; + case V4L2_CID_FLASH_LED_MODE: + return flash_led_mode; + case V4L2_CID_FLASH_STROBE_SOURCE: + return flash_strobe_source; + case V4L2_CID_MPEG_VIDEO_HEADER_MODE: + return header_mode; + case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: + return mpeg_video_frame_skip; + case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: + return multi_slice; + case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: + return entropy_mode; + case V4L2_CID_MPEG_VIDEO_H264_LEVEL: + return mpeg_h264_level; + case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: + return h264_loop_filter; + case V4L2_CID_MPEG_VIDEO_H264_PROFILE: + return h264_profile; + case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: + return vui_sar_idc; + case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: + return h264_fp_arrangement_type; + case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: + return h264_fmo_map_type; + case V4L2_CID_STATELESS_H264_DECODE_MODE: + return h264_decode_mode; + case V4L2_CID_STATELESS_H264_START_CODE: + return h264_start_code; + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: + return h264_hierarchical_coding_type; + case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: + return mpeg_mpeg2_level; + case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: + return mpeg2_profile; + case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: + return mpeg_mpeg4_level; + case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: + return mpeg4_profile; + case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: + return vpx_golden_frame_sel; + case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: + return vp8_profile; + case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: + return vp9_profile; + case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: + return vp9_level; + case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: + return jpeg_chroma_subsampling; + case V4L2_CID_DV_TX_MODE: + return dv_tx_mode; + case V4L2_CID_DV_TX_RGB_RANGE: + case V4L2_CID_DV_RX_RGB_RANGE: + return dv_rgb_range; + case V4L2_CID_DV_TX_IT_CONTENT_TYPE: + case V4L2_CID_DV_RX_IT_CONTENT_TYPE: + return dv_it_content_type; + case V4L2_CID_DETECT_MD_MODE: + return detect_md_mode; + case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: + return hevc_profile; + case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: + return hevc_level; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: + return hevc_hierarchial_coding_type; + case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: + return hevc_refresh_type; + case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: + return hevc_size_of_length_field; + case V4L2_CID_MPEG_VIDEO_HEVC_TIER: + return hevc_tier; + case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: + return hevc_loop_filter_mode; + case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: + return hevc_decode_mode; + case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: + return hevc_start_code; + case V4L2_CID_CAMERA_ORIENTATION: + return camera_orientation; + default: + return NULL; + } +} +EXPORT_SYMBOL(v4l2_ctrl_get_menu); + +#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); (arr); }) +/* + * Returns NULL or an s64 type array containing the menu for given + * control ID. The total number of the menu items is returned in @len. + */ +const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len) +{ + static const s64 qmenu_int_vpx_num_partitions[] = { + 1, 2, 4, 8, + }; + + static const s64 qmenu_int_vpx_num_ref_frames[] = { + 1, 2, 3, + }; + + switch (id) { + case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: + return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len); + case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: + return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len); + default: + *len = 0; + return NULL; + } +} +EXPORT_SYMBOL(v4l2_ctrl_get_int_menu); + +/* Return the control name. */ +const char *v4l2_ctrl_get_name(u32 id) +{ + switch (id) { + /* USER controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_USER_CLASS: return "User Controls"; + case V4L2_CID_BRIGHTNESS: return "Brightness"; + case V4L2_CID_CONTRAST: return "Contrast"; + case V4L2_CID_SATURATION: return "Saturation"; + case V4L2_CID_HUE: return "Hue"; + case V4L2_CID_AUDIO_VOLUME: return "Volume"; + case V4L2_CID_AUDIO_BALANCE: return "Balance"; + case V4L2_CID_AUDIO_BASS: return "Bass"; + case V4L2_CID_AUDIO_TREBLE: return "Treble"; + case V4L2_CID_AUDIO_MUTE: return "Mute"; + case V4L2_CID_AUDIO_LOUDNESS: return "Loudness"; + case V4L2_CID_BLACK_LEVEL: return "Black Level"; + case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic"; + case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance"; + case V4L2_CID_RED_BALANCE: return "Red Balance"; + case V4L2_CID_BLUE_BALANCE: return "Blue Balance"; + case V4L2_CID_GAMMA: return "Gamma"; + case V4L2_CID_EXPOSURE: return "Exposure"; + case V4L2_CID_AUTOGAIN: return "Gain, Automatic"; + case V4L2_CID_GAIN: return "Gain"; + case V4L2_CID_HFLIP: return "Horizontal Flip"; + case V4L2_CID_VFLIP: return "Vertical Flip"; + case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency"; + case V4L2_CID_HUE_AUTO: return "Hue, Automatic"; + case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature"; + case V4L2_CID_SHARPNESS: return "Sharpness"; + case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation"; + case V4L2_CID_CHROMA_AGC: return "Chroma AGC"; + case V4L2_CID_COLOR_KILLER: return "Color Killer"; + case V4L2_CID_COLORFX: return "Color Effects"; + case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic"; + case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter"; + case V4L2_CID_ROTATE: return "Rotate"; + case V4L2_CID_BG_COLOR: return "Background Color"; + case V4L2_CID_CHROMA_GAIN: return "Chroma Gain"; + case V4L2_CID_ILLUMINATORS_1: return "Illuminator 1"; + case V4L2_CID_ILLUMINATORS_2: return "Illuminator 2"; + case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: return "Min Number of Capture Buffers"; + case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: return "Min Number of Output Buffers"; + case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component"; + case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr"; + + /* + * Codec controls + * + * The MPEG controls are applicable to all codec controls + * and the 'MPEG' part of the define is historical. + * + * Keep the order of the 'case's the same as in videodev2.h! + */ + case V4L2_CID_CODEC_CLASS: return "Codec Controls"; + case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type"; + case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID"; + case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID"; + case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID"; + case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID"; + case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID"; + case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID"; + case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format"; + case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency"; + case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding"; + case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate"; + case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate"; + case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate"; + case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode"; + case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension"; + case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis"; + case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC"; + case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute"; + case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate"; + case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate"; + case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: return "Audio Playback"; + case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback"; + case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding"; + case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect"; + case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames"; + case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size"; + case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure"; + case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown"; + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode"; + case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY: return "Constant Quality"; + case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate"; + case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate"; + case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation"; + case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute"; + case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV"; + case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface"; + case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable"; + case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs"; + case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable"; + case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control"; + case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode"; + case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC: return "Max Number of Reference Pics"; + case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: return "Frame Skip Mode"; + case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY: return "Display Delay"; + case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE: return "Display Delay Enable"; + case V4L2_CID_MPEG_VIDEO_AU_DELIMITER: return "Generate Access Unit Delimiters"; + case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP: return "H263 I-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP: return "H263 P-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP: return "H263 B-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_H263_MIN_QP: return "H263 Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_H263_MAX_QP: return "H263 Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: return "H264 I-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: return "H264 P-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP: return "H264 B-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_MAX_QP: return "H264 Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_MIN_QP: return "H264 Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: return "H264 8x8 Transform Enable"; + case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE: return "H264 CPB Buffer Size"; + case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: return "H264 Entropy Mode"; + case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: return "H264 I-Frame Period"; + case V4L2_CID_MPEG_VIDEO_H264_LEVEL: return "H264 Level"; + case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA: return "H264 Loop Filter Alpha Offset"; + case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA: return "H264 Loop Filter Beta Offset"; + case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: return "H264 Loop Filter Mode"; + case V4L2_CID_MPEG_VIDEO_H264_PROFILE: return "H264 Profile"; + case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT: return "Vertical Size of SAR"; + case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH: return "Horizontal Size of SAR"; + case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: return "Aspect Ratio VUI Enable"; + case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: return "VUI Aspect Ratio IDC"; + case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING: return "H264 Enable Frame Packing SEI"; + case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0: return "H264 Set Curr. Frame as Frame0"; + case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: return "H264 FP Arrangement Type"; + case V4L2_CID_MPEG_VIDEO_H264_FMO: return "H264 Flexible MB Ordering"; + case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: return "H264 Map Type for FMO"; + case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP: return "H264 FMO Number of Slice Groups"; + case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION: return "H264 FMO Direction of Change"; + case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE: return "H264 FMO Size of 1st Slice Grp"; + case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH: return "H264 FMO No. of Consecutive MBs"; + case V4L2_CID_MPEG_VIDEO_H264_ASO: return "H264 Arbitrary Slice Ordering"; + case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER: return "H264 ASO Slice Order"; + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING: return "Enable H264 Hierarchical Coding"; + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: return "H264 Hierarchical Coding Type"; + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers"; + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP: + return "H264 Set QP Value for HC Layers"; + case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION: + return "H264 Constrained Intra Pred"; + case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET: return "H264 Chroma QP Index Offset"; + case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MIN_QP: return "H264 I-Frame Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP: return "H264 I-Frame Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP: return "H264 P-Frame Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP: return "H264 P-Frame Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP: return "H264 B-Frame Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP: return "H264 B-Frame Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR: return "H264 Hierarchical Lay 0 Bitrate"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR: return "H264 Hierarchical Lay 1 Bitrate"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR: return "H264 Hierarchical Lay 2 Bitrate"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR: return "H264 Hierarchical Lay 3 Bitrate"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR: return "H264 Hierarchical Lay 4 Bitrate"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR: return "H264 Hierarchical Lay 5 Bitrate"; + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR: return "H264 Hierarchical Lay 6 Bitrate"; + case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: return "MPEG2 Level"; + case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: return "MPEG2 Profile"; + case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: return "MPEG4 I-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: return "MPEG4 P-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP: return "MPEG4 B-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP: return "MPEG4 Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP: return "MPEG4 Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: return "MPEG4 Level"; + case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: return "MPEG4 Profile"; + case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: return "Quarter Pixel Search Enable"; + case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES: return "Maximum Bytes in a Slice"; + case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: return "Number of MBs in a Slice"; + case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: return "Slice Partitioning Method"; + case V4L2_CID_MPEG_VIDEO_VBV_SIZE: return "VBV Buffer Size"; + case V4L2_CID_MPEG_VIDEO_DEC_PTS: return "Video Decoder PTS"; + case V4L2_CID_MPEG_VIDEO_DEC_FRAME: return "Video Decoder Frame Count"; + case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR: return "Video Decoder Conceal Color"; + case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control"; + case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: return "Horizontal MV Search Range"; + case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range"; + case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header"; + case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame"; + case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID: return "Base Layer Priority ID"; + case V4L2_CID_MPEG_VIDEO_LTR_COUNT: return "LTR Count"; + case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: return "Frame LTR Index"; + case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: return "Use LTR Frames"; + case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value"; + case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value"; + + /* VPX controls */ + case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions"; + case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4: return "VPX Intra Mode Decision Disable"; + case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: return "VPX No. of Refs for P Frame"; + case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL: return "VPX Loop Filter Level Range"; + case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS: return "VPX Deblocking Effect Control"; + case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD: return "VPX Golden Frame Refresh Period"; + case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: return "VPX Golden Frame Indicator"; + case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP: return "VPX Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP: return "VPX Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP: return "VPX I-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX P-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: return "VP8 Profile"; + case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: return "VP9 Profile"; + case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: return "VP9 Level"; + + /* HEVC controls */ + case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP: return "HEVC I-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP: return "HEVC P-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP: return "HEVC B-Frame QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP: return "HEVC Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP: return "HEVC Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP: return "HEVC I-Frame Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP: return "HEVC I-Frame Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP: return "HEVC P-Frame Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP: return "HEVC P-Frame Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP: return "HEVC B-Frame Minimum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP: return "HEVC B-Frame Maximum QP Value"; + case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: return "HEVC Profile"; + case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: return "HEVC Level"; + case V4L2_CID_MPEG_VIDEO_HEVC_TIER: return "HEVC Tier"; + case V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION: return "HEVC Frame Rate Resolution"; + case V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH: return "HEVC Maximum Coding Unit Depth"; + case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: return "HEVC Refresh Type"; + case V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED: return "HEVC Constant Intra Prediction"; + case V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU: return "HEVC Lossless Encoding"; + case V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT: return "HEVC Wavefront"; + case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: return "HEVC Loop Filter"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP: return "HEVC QP Values"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: return "HEVC Hierarchical Coding Type"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER: return "HEVC Hierarchical Coding Layer"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP: return "HEVC Hierarchical Layer 0 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP: return "HEVC Hierarchical Layer 1 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP: return "HEVC Hierarchical Layer 2 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP: return "HEVC Hierarchical Layer 3 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP: return "HEVC Hierarchical Layer 4 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP: return "HEVC Hierarchical Layer 5 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP: return "HEVC Hierarchical Layer 6 QP"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_BR: return "HEVC Hierarchical Lay 0 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_BR: return "HEVC Hierarchical Lay 1 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_BR: return "HEVC Hierarchical Lay 2 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_BR: return "HEVC Hierarchical Lay 3 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_BR: return "HEVC Hierarchical Lay 4 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR: return "HEVC Hierarchical Lay 5 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR: return "HEVC Hierarchical Lay 6 BitRate"; + case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB: return "HEVC General PB"; + case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID: return "HEVC Temporal ID"; + case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING: return "HEVC Strong Intra Smoothing"; + case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT: return "HEVC Intra PU Split"; + case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION: return "HEVC TMV Prediction"; + case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1: return "HEVC Max Num of Candidate MVs"; + case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE: return "HEVC ENC Without Startcode"; + case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD: return "HEVC Num of I-Frame b/w 2 IDR"; + case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2: return "HEVC Loop Filter Beta Offset"; + case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2: return "HEVC Loop Filter TC Offset"; + case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: return "HEVC Size of Length Field"; + case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES: return "Reference Frames for a P-Frame"; + case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR: return "Prepend SPS and PPS to IDR"; + case V4L2_CID_MPEG_VIDEO_HEVC_SPS: return "HEVC Sequence Parameter Set"; + case V4L2_CID_MPEG_VIDEO_HEVC_PPS: return "HEVC Picture Parameter Set"; + case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters"; + case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: return "HEVC Decode Mode"; + case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code"; + + /* CAMERA controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_CAMERA_CLASS: return "Camera Controls"; + case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure"; + case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute"; + case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate"; + case V4L2_CID_PAN_RELATIVE: return "Pan, Relative"; + case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative"; + case V4L2_CID_PAN_RESET: return "Pan, Reset"; + case V4L2_CID_TILT_RESET: return "Tilt, Reset"; + case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute"; + case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute"; + case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute"; + case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative"; + case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic Continuous"; + case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute"; + case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative"; + case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous"; + case V4L2_CID_PRIVACY: return "Privacy"; + case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute"; + case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative"; + case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias"; + case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset"; + case V4L2_CID_WIDE_DYNAMIC_RANGE: return "Wide Dynamic Range"; + case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization"; + case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity"; + case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto"; + case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode"; + case V4L2_CID_SCENE_MODE: return "Scene Mode"; + case V4L2_CID_3A_LOCK: return "3A Lock"; + case V4L2_CID_AUTO_FOCUS_START: return "Auto Focus, Start"; + case V4L2_CID_AUTO_FOCUS_STOP: return "Auto Focus, Stop"; + case V4L2_CID_AUTO_FOCUS_STATUS: return "Auto Focus, Status"; + case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range"; + case V4L2_CID_PAN_SPEED: return "Pan, Speed"; + case V4L2_CID_TILT_SPEED: return "Tilt, Speed"; + case V4L2_CID_UNIT_CELL_SIZE: return "Unit Cell Size"; + case V4L2_CID_CAMERA_ORIENTATION: return "Camera Orientation"; + case V4L2_CID_CAMERA_SENSOR_ROTATION: return "Camera Sensor Rotation"; + + /* FM Radio Modulator controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls"; + case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation"; + case V4L2_CID_RDS_TX_PI: return "RDS Program ID"; + case V4L2_CID_RDS_TX_PTY: return "RDS Program Type"; + case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name"; + case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text"; + case V4L2_CID_RDS_TX_MONO_STEREO: return "RDS Stereo"; + case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: return "RDS Artificial Head"; + case V4L2_CID_RDS_TX_COMPRESSED: return "RDS Compressed"; + case V4L2_CID_RDS_TX_DYNAMIC_PTY: return "RDS Dynamic PTY"; + case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement"; + case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: return "RDS Traffic Program"; + case V4L2_CID_RDS_TX_MUSIC_SPEECH: return "RDS Music"; + case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: return "RDS Enable Alt Frequencies"; + case V4L2_CID_RDS_TX_ALT_FREQS: return "RDS Alternate Frequencies"; + case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled"; + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time"; + case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation"; + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled"; + case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain"; + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold"; + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time"; + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time"; + case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled"; + case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation"; + case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency"; + case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-Emphasis"; + case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level"; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor"; + + /* Flash controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_FLASH_CLASS: return "Flash Controls"; + case V4L2_CID_FLASH_LED_MODE: return "LED Mode"; + case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe Source"; + case V4L2_CID_FLASH_STROBE: return "Strobe"; + case V4L2_CID_FLASH_STROBE_STOP: return "Stop Strobe"; + case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe Status"; + case V4L2_CID_FLASH_TIMEOUT: return "Strobe Timeout"; + case V4L2_CID_FLASH_INTENSITY: return "Intensity, Flash Mode"; + case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, Torch Mode"; + case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator"; + case V4L2_CID_FLASH_FAULT: return "Faults"; + case V4L2_CID_FLASH_CHARGE: return "Charge"; + case V4L2_CID_FLASH_READY: return "Ready to Strobe"; + + /* JPEG encoder controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_JPEG_CLASS: return "JPEG Compression Controls"; + case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: return "Chroma Subsampling"; + case V4L2_CID_JPEG_RESTART_INTERVAL: return "Restart Interval"; + case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality"; + case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers"; + + /* Image source controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_IMAGE_SOURCE_CLASS: return "Image Source Controls"; + case V4L2_CID_VBLANK: return "Vertical Blanking"; + case V4L2_CID_HBLANK: return "Horizontal Blanking"; + case V4L2_CID_ANALOGUE_GAIN: return "Analogue Gain"; + case V4L2_CID_TEST_PATTERN_RED: return "Red Pixel Value"; + case V4L2_CID_TEST_PATTERN_GREENR: return "Green (Red) Pixel Value"; + case V4L2_CID_TEST_PATTERN_BLUE: return "Blue Pixel Value"; + case V4L2_CID_TEST_PATTERN_GREENB: return "Green (Blue) Pixel Value"; + + /* Image processing controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_IMAGE_PROC_CLASS: return "Image Processing Controls"; + case V4L2_CID_LINK_FREQ: return "Link Frequency"; + case V4L2_CID_PIXEL_RATE: return "Pixel Rate"; + case V4L2_CID_TEST_PATTERN: return "Test Pattern"; + case V4L2_CID_DEINTERLACING_MODE: return "Deinterlacing Mode"; + case V4L2_CID_DIGITAL_GAIN: return "Digital Gain"; + + /* DV controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_DV_CLASS: return "Digital Video Controls"; + case V4L2_CID_DV_TX_HOTPLUG: return "Hotplug Present"; + case V4L2_CID_DV_TX_RXSENSE: return "RxSense Present"; + case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present"; + case V4L2_CID_DV_TX_MODE: return "Transmit Mode"; + case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range"; + case V4L2_CID_DV_TX_IT_CONTENT_TYPE: return "Tx IT Content Type"; + case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present"; + case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range"; + case V4L2_CID_DV_RX_IT_CONTENT_TYPE: return "Rx IT Content Type"; + + case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls"; + case V4L2_CID_TUNE_DEEMPHASIS: return "De-Emphasis"; + case V4L2_CID_RDS_RECEPTION: return "RDS Reception"; + case V4L2_CID_RF_TUNER_CLASS: return "RF Tuner Controls"; + case V4L2_CID_RF_TUNER_RF_GAIN: return "RF Gain"; + case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: return "LNA Gain, Auto"; + case V4L2_CID_RF_TUNER_LNA_GAIN: return "LNA Gain"; + case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: return "Mixer Gain, Auto"; + case V4L2_CID_RF_TUNER_MIXER_GAIN: return "Mixer Gain"; + case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: return "IF Gain, Auto"; + case V4L2_CID_RF_TUNER_IF_GAIN: return "IF Gain"; + case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: return "Bandwidth, Auto"; + case V4L2_CID_RF_TUNER_BANDWIDTH: return "Bandwidth"; + case V4L2_CID_RF_TUNER_PLL_LOCK: return "PLL Lock"; + case V4L2_CID_RDS_RX_PTY: return "RDS Program Type"; + case V4L2_CID_RDS_RX_PS_NAME: return "RDS PS Name"; + case V4L2_CID_RDS_RX_RADIO_TEXT: return "RDS Radio Text"; + case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement"; + case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: return "RDS Traffic Program"; + case V4L2_CID_RDS_RX_MUSIC_SPEECH: return "RDS Music"; + + /* Detection controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_DETECT_CLASS: return "Detection Controls"; + case V4L2_CID_DETECT_MD_MODE: return "Motion Detection Mode"; + case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold"; + case V4L2_CID_DETECT_MD_THRESHOLD_GRID: return "MD Threshold Grid"; + case V4L2_CID_DETECT_MD_REGION_GRID: return "MD Region Grid"; + + /* Stateless Codec controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_CODEC_STATELESS_CLASS: return "Stateless Codec Controls"; + case V4L2_CID_STATELESS_H264_DECODE_MODE: return "H264 Decode Mode"; + case V4L2_CID_STATELESS_H264_START_CODE: return "H264 Start Code"; + case V4L2_CID_STATELESS_H264_SPS: return "H264 Sequence Parameter Set"; + case V4L2_CID_STATELESS_H264_PPS: return "H264 Picture Parameter Set"; + case V4L2_CID_STATELESS_H264_SCALING_MATRIX: return "H264 Scaling Matrix"; + case V4L2_CID_STATELESS_H264_PRED_WEIGHTS: return "H264 Prediction Weight Table"; + case V4L2_CID_STATELESS_H264_SLICE_PARAMS: return "H264 Slice Parameters"; + case V4L2_CID_STATELESS_H264_DECODE_PARAMS: return "H264 Decode Parameters"; + case V4L2_CID_STATELESS_FWHT_PARAMS: return "FWHT Stateless Parameters"; + case V4L2_CID_STATELESS_VP8_FRAME: return "VP8 Frame Parameters"; + case V4L2_CID_STATELESS_MPEG2_SEQUENCE: return "MPEG-2 Sequence Header"; + case V4L2_CID_STATELESS_MPEG2_PICTURE: return "MPEG-2 Picture Header"; + case V4L2_CID_STATELESS_MPEG2_QUANTISATION: return "MPEG-2 Quantisation Matrices"; + + /* Colorimetry controls */ + /* Keep the order of the 'case's the same as in v4l2-controls.h! */ + case V4L2_CID_COLORIMETRY_CLASS: return "Colorimetry Controls"; + case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO: return "HDR10 Content Light Info"; + case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: return "HDR10 Mastering Display"; + default: + return NULL; + } +} +EXPORT_SYMBOL(v4l2_ctrl_get_name); + +void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, + s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags) +{ + *name = v4l2_ctrl_get_name(id); + *flags = 0; + + switch (id) { + case V4L2_CID_AUDIO_MUTE: + case V4L2_CID_AUDIO_LOUDNESS: + case V4L2_CID_AUTO_WHITE_BALANCE: + case V4L2_CID_AUTOGAIN: + case V4L2_CID_HFLIP: + case V4L2_CID_VFLIP: + case V4L2_CID_HUE_AUTO: + case V4L2_CID_CHROMA_AGC: + case V4L2_CID_COLOR_KILLER: + case V4L2_CID_AUTOBRIGHTNESS: + case V4L2_CID_MPEG_AUDIO_MUTE: + case V4L2_CID_MPEG_VIDEO_MUTE: + case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: + case V4L2_CID_MPEG_VIDEO_PULLDOWN: + case V4L2_CID_EXPOSURE_AUTO_PRIORITY: + case V4L2_CID_FOCUS_AUTO: + case V4L2_CID_PRIVACY: + case V4L2_CID_AUDIO_LIMITER_ENABLED: + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: + case V4L2_CID_PILOT_TONE_ENABLED: + case V4L2_CID_ILLUMINATORS_1: + case V4L2_CID_ILLUMINATORS_2: + case V4L2_CID_FLASH_STROBE_STATUS: + case V4L2_CID_FLASH_CHARGE: + case V4L2_CID_FLASH_READY: + case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: + case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: + case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE: + case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: + case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: + case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: + case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: + case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: + case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: + case V4L2_CID_MPEG_VIDEO_AU_DELIMITER: + case V4L2_CID_WIDE_DYNAMIC_RANGE: + case V4L2_CID_IMAGE_STABILIZATION: + case V4L2_CID_RDS_RECEPTION: + case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: + case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: + case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: + case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: + case V4L2_CID_RF_TUNER_PLL_LOCK: + case V4L2_CID_RDS_TX_MONO_STEREO: + case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: + case V4L2_CID_RDS_TX_COMPRESSED: + case V4L2_CID_RDS_TX_DYNAMIC_PTY: + case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: + case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: + case V4L2_CID_RDS_TX_MUSIC_SPEECH: + case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: + case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: + case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: + case V4L2_CID_RDS_RX_MUSIC_SPEECH: + *type = V4L2_CTRL_TYPE_BOOLEAN; + *min = 0; + *max = *step = 1; + break; + case V4L2_CID_ROTATE: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; + break; + case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: + case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: + case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY: + *type = V4L2_CTRL_TYPE_INTEGER; + break; + case V4L2_CID_MPEG_VIDEO_LTR_COUNT: + *type = V4L2_CTRL_TYPE_INTEGER; + break; + case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; + break; + case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: + *type = V4L2_CTRL_TYPE_BITMASK; + *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; + break; + case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: + case V4L2_CID_PAN_RESET: + case V4L2_CID_TILT_RESET: + case V4L2_CID_FLASH_STROBE: + case V4L2_CID_FLASH_STROBE_STOP: + case V4L2_CID_AUTO_FOCUS_START: + case V4L2_CID_AUTO_FOCUS_STOP: + case V4L2_CID_DO_WHITE_BALANCE: + *type = V4L2_CTRL_TYPE_BUTTON; + *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | + V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; + *min = *max = *step = *def = 0; + break; + case V4L2_CID_POWER_LINE_FREQUENCY: + case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: + case V4L2_CID_MPEG_AUDIO_ENCODING: + case V4L2_CID_MPEG_AUDIO_L1_BITRATE: + case V4L2_CID_MPEG_AUDIO_L2_BITRATE: + case V4L2_CID_MPEG_AUDIO_L3_BITRATE: + case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: + case V4L2_CID_MPEG_AUDIO_MODE: + case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: + case V4L2_CID_MPEG_AUDIO_EMPHASIS: + case V4L2_CID_MPEG_AUDIO_CRC: + case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: + case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: + case V4L2_CID_MPEG_VIDEO_ENCODING: + case V4L2_CID_MPEG_VIDEO_ASPECT: + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + case V4L2_CID_MPEG_STREAM_TYPE: + case V4L2_CID_MPEG_STREAM_VBI_FMT: + case V4L2_CID_EXPOSURE_AUTO: + case V4L2_CID_AUTO_FOCUS_RANGE: + case V4L2_CID_COLORFX: + case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: + case V4L2_CID_TUNE_PREEMPHASIS: + case V4L2_CID_FLASH_LED_MODE: + case V4L2_CID_FLASH_STROBE_SOURCE: + case V4L2_CID_MPEG_VIDEO_HEADER_MODE: + case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: + case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: + case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: + case V4L2_CID_MPEG_VIDEO_H264_LEVEL: + case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: + case V4L2_CID_MPEG_VIDEO_H264_PROFILE: + case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: + case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: + case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: + case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: + case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: + case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: + case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: + case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: + case V4L2_CID_ISO_SENSITIVITY_AUTO: + case V4L2_CID_EXPOSURE_METERING: + case V4L2_CID_SCENE_MODE: + case V4L2_CID_DV_TX_MODE: + case V4L2_CID_DV_TX_RGB_RANGE: + case V4L2_CID_DV_TX_IT_CONTENT_TYPE: + case V4L2_CID_DV_RX_RGB_RANGE: + case V4L2_CID_DV_RX_IT_CONTENT_TYPE: + case V4L2_CID_TEST_PATTERN: + case V4L2_CID_DEINTERLACING_MODE: + case V4L2_CID_TUNE_DEEMPHASIS: + case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: + case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: + case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: + case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: + case V4L2_CID_DETECT_MD_MODE: + case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: + case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: + case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: + case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: + case V4L2_CID_MPEG_VIDEO_HEVC_TIER: + case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: + case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: + case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: + case V4L2_CID_STATELESS_H264_DECODE_MODE: + case V4L2_CID_STATELESS_H264_START_CODE: + case V4L2_CID_CAMERA_ORIENTATION: + *type = V4L2_CTRL_TYPE_MENU; + break; + case V4L2_CID_LINK_FREQ: + *type = V4L2_CTRL_TYPE_INTEGER_MENU; + break; + case V4L2_CID_RDS_TX_PS_NAME: + case V4L2_CID_RDS_TX_RADIO_TEXT: + case V4L2_CID_RDS_RX_PS_NAME: + case V4L2_CID_RDS_RX_RADIO_TEXT: + *type = V4L2_CTRL_TYPE_STRING; + break; + case V4L2_CID_ISO_SENSITIVITY: + case V4L2_CID_AUTO_EXPOSURE_BIAS: + case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: + case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: + *type = V4L2_CTRL_TYPE_INTEGER_MENU; + break; + case V4L2_CID_USER_CLASS: + case V4L2_CID_CAMERA_CLASS: + case V4L2_CID_CODEC_CLASS: + case V4L2_CID_FM_TX_CLASS: + case V4L2_CID_FLASH_CLASS: + case V4L2_CID_JPEG_CLASS: + case V4L2_CID_IMAGE_SOURCE_CLASS: + case V4L2_CID_IMAGE_PROC_CLASS: + case V4L2_CID_DV_CLASS: + case V4L2_CID_FM_RX_CLASS: + case V4L2_CID_RF_TUNER_CLASS: + case V4L2_CID_DETECT_CLASS: + case V4L2_CID_CODEC_STATELESS_CLASS: + case V4L2_CID_COLORIMETRY_CLASS: + *type = V4L2_CTRL_TYPE_CTRL_CLASS; + /* You can neither read nor write these */ + *flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY; + *min = *max = *step = *def = 0; + break; + case V4L2_CID_BG_COLOR: + *type = V4L2_CTRL_TYPE_INTEGER; + *step = 1; + *min = 0; + /* Max is calculated as RGB888 that is 2^24 */ + *max = 0xFFFFFF; + break; + case V4L2_CID_FLASH_FAULT: + case V4L2_CID_JPEG_ACTIVE_MARKER: + case V4L2_CID_3A_LOCK: + case V4L2_CID_AUTO_FOCUS_STATUS: + case V4L2_CID_DV_TX_HOTPLUG: + case V4L2_CID_DV_TX_RXSENSE: + case V4L2_CID_DV_TX_EDID_PRESENT: + case V4L2_CID_DV_RX_POWER_PRESENT: + *type = V4L2_CTRL_TYPE_BITMASK; + break; + case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: + case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_READ_ONLY; + break; + case V4L2_CID_MPEG_VIDEO_DEC_PTS: + *type = V4L2_CTRL_TYPE_INTEGER64; + *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; + *min = *def = 0; + *max = 0x1ffffffffLL; + *step = 1; + break; + case V4L2_CID_MPEG_VIDEO_DEC_FRAME: + *type = V4L2_CTRL_TYPE_INTEGER64; + *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; + *min = *def = 0; + *max = 0x7fffffffffffffffLL; + *step = 1; + break; + case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR: + *type = V4L2_CTRL_TYPE_INTEGER64; + *min = 0; + /* default for 8 bit black, luma is 16, chroma is 128 */ + *def = 0x8000800010LL; + *max = 0xffffffffffffLL; + *step = 1; + break; + case V4L2_CID_PIXEL_RATE: + *type = V4L2_CTRL_TYPE_INTEGER64; + *flags |= V4L2_CTRL_FLAG_READ_ONLY; + break; + case V4L2_CID_DETECT_MD_REGION_GRID: + *type = V4L2_CTRL_TYPE_U8; + break; + case V4L2_CID_DETECT_MD_THRESHOLD_GRID: + *type = V4L2_CTRL_TYPE_U16; + break; + case V4L2_CID_RDS_TX_ALT_FREQS: + *type = V4L2_CTRL_TYPE_U32; + break; + case V4L2_CID_STATELESS_MPEG2_SEQUENCE: + *type = V4L2_CTRL_TYPE_MPEG2_SEQUENCE; + break; + case V4L2_CID_STATELESS_MPEG2_PICTURE: + *type = V4L2_CTRL_TYPE_MPEG2_PICTURE; + break; + case V4L2_CID_STATELESS_MPEG2_QUANTISATION: + *type = V4L2_CTRL_TYPE_MPEG2_QUANTISATION; + break; + case V4L2_CID_STATELESS_FWHT_PARAMS: + *type = V4L2_CTRL_TYPE_FWHT_PARAMS; + break; + case V4L2_CID_STATELESS_H264_SPS: + *type = V4L2_CTRL_TYPE_H264_SPS; + break; + case V4L2_CID_STATELESS_H264_PPS: + *type = V4L2_CTRL_TYPE_H264_PPS; + break; + case V4L2_CID_STATELESS_H264_SCALING_MATRIX: + *type = V4L2_CTRL_TYPE_H264_SCALING_MATRIX; + break; + case V4L2_CID_STATELESS_H264_SLICE_PARAMS: + *type = V4L2_CTRL_TYPE_H264_SLICE_PARAMS; + break; + case V4L2_CID_STATELESS_H264_DECODE_PARAMS: + *type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS; + break; + case V4L2_CID_STATELESS_H264_PRED_WEIGHTS: + *type = V4L2_CTRL_TYPE_H264_PRED_WEIGHTS; + break; + case V4L2_CID_STATELESS_VP8_FRAME: + *type = V4L2_CTRL_TYPE_VP8_FRAME; + break; + case V4L2_CID_MPEG_VIDEO_HEVC_SPS: + *type = V4L2_CTRL_TYPE_HEVC_SPS; + break; + case V4L2_CID_MPEG_VIDEO_HEVC_PPS: + *type = V4L2_CTRL_TYPE_HEVC_PPS; + break; + case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: + *type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS; + break; + case V4L2_CID_UNIT_CELL_SIZE: + *type = V4L2_CTRL_TYPE_AREA; + *flags |= V4L2_CTRL_FLAG_READ_ONLY; + break; + case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO: + *type = V4L2_CTRL_TYPE_HDR10_CLL_INFO; + break; + case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: + *type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY; + break; + default: + *type = V4L2_CTRL_TYPE_INTEGER; + break; + } + switch (id) { + case V4L2_CID_MPEG_AUDIO_ENCODING: + case V4L2_CID_MPEG_AUDIO_MODE: + case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: + case V4L2_CID_MPEG_VIDEO_B_FRAMES: + case V4L2_CID_MPEG_STREAM_TYPE: + *flags |= V4L2_CTRL_FLAG_UPDATE; + break; + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + case V4L2_CID_BRIGHTNESS: + case V4L2_CID_CONTRAST: + case V4L2_CID_SATURATION: + case V4L2_CID_HUE: + case V4L2_CID_RED_BALANCE: + case V4L2_CID_BLUE_BALANCE: + case V4L2_CID_GAMMA: + case V4L2_CID_SHARPNESS: + case V4L2_CID_CHROMA_GAIN: + case V4L2_CID_RDS_TX_DEVIATION: + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: + case V4L2_CID_AUDIO_LIMITER_DEVIATION: + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: + case V4L2_CID_PILOT_TONE_DEVIATION: + case V4L2_CID_PILOT_TONE_FREQUENCY: + case V4L2_CID_TUNE_POWER_LEVEL: + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + case V4L2_CID_RF_TUNER_RF_GAIN: + case V4L2_CID_RF_TUNER_LNA_GAIN: + case V4L2_CID_RF_TUNER_MIXER_GAIN: + case V4L2_CID_RF_TUNER_IF_GAIN: + case V4L2_CID_RF_TUNER_BANDWIDTH: + case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: + *flags |= V4L2_CTRL_FLAG_SLIDER; + break; + case V4L2_CID_PAN_RELATIVE: + case V4L2_CID_TILT_RELATIVE: + case V4L2_CID_FOCUS_RELATIVE: + case V4L2_CID_IRIS_RELATIVE: + case V4L2_CID_ZOOM_RELATIVE: + *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | + V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; + break; + case V4L2_CID_FLASH_STROBE_STATUS: + case V4L2_CID_AUTO_FOCUS_STATUS: + case V4L2_CID_FLASH_READY: + case V4L2_CID_DV_TX_HOTPLUG: + case V4L2_CID_DV_TX_RXSENSE: + case V4L2_CID_DV_TX_EDID_PRESENT: + case V4L2_CID_DV_RX_POWER_PRESENT: + case V4L2_CID_DV_RX_IT_CONTENT_TYPE: + case V4L2_CID_RDS_RX_PTY: + case V4L2_CID_RDS_RX_PS_NAME: + case V4L2_CID_RDS_RX_RADIO_TEXT: + case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: + case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: + case V4L2_CID_RDS_RX_MUSIC_SPEECH: + case V4L2_CID_CAMERA_ORIENTATION: + case V4L2_CID_CAMERA_SENSOR_ROTATION: + *flags |= V4L2_CTRL_FLAG_READ_ONLY; + break; + case V4L2_CID_RF_TUNER_PLL_LOCK: + *flags |= V4L2_CTRL_FLAG_VOLATILE; + break; + } +} +EXPORT_SYMBOL(v4l2_ctrl_fill); diff --git a/drivers/media/v4l2-core/v4l2-ctrls-priv.h b/drivers/media/v4l2-core/v4l2-ctrls-priv.h new file mode 100644 index 0000000..d4bf2c7 --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-ctrls-priv.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * V4L2 controls framework private header. + * + * Copyright (C) 2010-2021 Hans Verkuil + */ + +#ifndef _V4L2_CTRLS_PRIV_H_ +#define _V4L2_CTRLS_PRIV_H_ + +#define dprintk(vdev, fmt, arg...) do { \ + if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \ + printk(KERN_DEBUG pr_fmt("%s: %s: " fmt), \ + __func__, video_device_node_name(vdev), ##arg); \ +} while (0) + +#define has_op(master, op) \ + ((master)->ops && (master)->ops->op) +#define call_op(master, op) \ + (has_op(master, op) ? (master)->ops->op(master) : 0) + +static inline u32 node2id(struct list_head *node) +{ + return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id; +} + +/* + * Small helper function to determine if the autocluster is set to manual + * mode. + */ +static inline bool is_cur_manual(const struct v4l2_ctrl *master) +{ + return master->is_auto && master->cur.val == master->manual_mode_value; +} + +/* + * Small helper function to determine if the autocluster will be set to manual + * mode. + */ +static inline bool is_new_manual(const struct v4l2_ctrl *master) +{ + return master->is_auto && master->val == master->manual_mode_value; +} + +static inline u32 user_flags(const struct v4l2_ctrl *ctrl) +{ + u32 flags = ctrl->flags; + + if (ctrl->is_ptr) + flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD; + + return flags; +} + +/* v4l2-ctrls-core.c */ +void cur_to_new(struct v4l2_ctrl *ctrl); +void cur_to_req(struct v4l2_ctrl_ref *ref); +void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags); +void new_to_req(struct v4l2_ctrl_ref *ref); +void req_to_new(struct v4l2_ctrl_ref *ref); +void send_initial_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl); +void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes); +int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new); +int handler_new_ref(struct v4l2_ctrl_handler *hdl, + struct v4l2_ctrl *ctrl, + struct v4l2_ctrl_ref **ctrl_ref, + bool from_other_dev, bool allocate_req); +struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id); +struct v4l2_ctrl_ref *find_ref_lock(struct v4l2_ctrl_handler *hdl, u32 id); +int check_range(enum v4l2_ctrl_type type, + s64 min, s64 max, u64 step, s64 def); +void update_from_auto_cluster(struct v4l2_ctrl *master); +int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master, + bool set, u32 ch_flags); + +/* v4l2-ctrls-api.c */ +int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl, + struct v4l2_ext_controls *cs, + struct video_device *vdev); +int try_set_ext_ctrls_common(struct v4l2_fh *fh, + struct v4l2_ctrl_handler *hdl, + struct v4l2_ext_controls *cs, + struct video_device *vdev, bool set); + +/* v4l2-ctrls-request.c */ +void v4l2_ctrl_handler_init_request(struct v4l2_ctrl_handler *hdl); +void v4l2_ctrl_handler_free_request(struct v4l2_ctrl_handler *hdl); +int v4l2_g_ext_ctrls_request(struct v4l2_ctrl_handler *hdl, struct video_device *vdev, + struct media_device *mdev, struct v4l2_ext_controls *cs); +int try_set_ext_ctrls_request(struct v4l2_fh *fh, + struct v4l2_ctrl_handler *hdl, + struct video_device *vdev, + struct media_device *mdev, + struct v4l2_ext_controls *cs, bool set); + +#endif diff --git a/drivers/media/v4l2-core/v4l2-ctrls-request.c b/drivers/media/v4l2-core/v4l2-ctrls-request.c new file mode 100644 index 0000000..7d098f2 --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-ctrls-request.c @@ -0,0 +1,496 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * V4L2 controls framework Request API implementation. + * + * Copyright (C) 2018-2021 Hans Verkuil + */ + +#define pr_fmt(fmt) "v4l2-ctrls: " fmt + +#include +#include +#include +#include +#include + +#include "v4l2-ctrls-priv.h" + +/* Initialize the request-related fields in a control handler */ +void v4l2_ctrl_handler_init_request(struct v4l2_ctrl_handler *hdl) +{ + INIT_LIST_HEAD(&hdl->requests); + INIT_LIST_HEAD(&hdl->requests_queued); + hdl->request_is_queued = false; + media_request_object_init(&hdl->req_obj); +} + +/* Free the request-related fields in a control handler */ +void v4l2_ctrl_handler_free_request(struct v4l2_ctrl_handler *hdl) +{ + struct v4l2_ctrl_handler *req, *next_req; + + /* + * Do nothing if this isn't the main handler or the main + * handler is not used in any request. + * + * The main handler can be identified by having a NULL ops pointer in + * the request object. + */ + if (hdl->req_obj.ops || list_empty(&hdl->requests)) + return; + + /* + * If the main handler is freed and it is used by handler objects in + * outstanding requests, then unbind and put those objects before + * freeing the main handler. + */ + list_for_each_entry_safe(req, next_req, &hdl->requests, requests) { + media_request_object_unbind(&req->req_obj); + media_request_object_put(&req->req_obj); + } +} + +static int v4l2_ctrl_request_clone(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_handler *from) +{ + struct v4l2_ctrl_ref *ref; + int err = 0; + + if (WARN_ON(!hdl || hdl == from)) + return -EINVAL; + + if (hdl->error) + return hdl->error; + + WARN_ON(hdl->lock != &hdl->_lock); + + mutex_lock(from->lock); + list_for_each_entry(ref, &from->ctrl_refs, node) { + struct v4l2_ctrl *ctrl = ref->ctrl; + struct v4l2_ctrl_ref *new_ref; + + /* Skip refs inherited from other devices */ + if (ref->from_other_dev) + continue; + err = handler_new_ref(hdl, ctrl, &new_ref, false, true); + if (err) + break; + } + mutex_unlock(from->lock); + return err; +} + +static void v4l2_ctrl_request_queue(struct media_request_object *obj) +{ + struct v4l2_ctrl_handler *hdl = + container_of(obj, struct v4l2_ctrl_handler, req_obj); + struct v4l2_ctrl_handler *main_hdl = obj->priv; + + mutex_lock(main_hdl->lock); + list_add_tail(&hdl->requests_queued, &main_hdl->requests_queued); + hdl->request_is_queued = true; + mutex_unlock(main_hdl->lock); +} + +static void v4l2_ctrl_request_unbind(struct media_request_object *obj) +{ + struct v4l2_ctrl_handler *hdl = + container_of(obj, struct v4l2_ctrl_handler, req_obj); + struct v4l2_ctrl_handler *main_hdl = obj->priv; + + mutex_lock(main_hdl->lock); + list_del_init(&hdl->requests); + if (hdl->request_is_queued) { + list_del_init(&hdl->requests_queued); + hdl->request_is_queued = false; + } + mutex_unlock(main_hdl->lock); +} + +static void v4l2_ctrl_request_release(struct media_request_object *obj) +{ + struct v4l2_ctrl_handler *hdl = + container_of(obj, struct v4l2_ctrl_handler, req_obj); + + v4l2_ctrl_handler_free(hdl); + kfree(hdl); +} + +static const struct media_request_object_ops req_ops = { + .queue = v4l2_ctrl_request_queue, + .unbind = v4l2_ctrl_request_unbind, + .release = v4l2_ctrl_request_release, +}; + +struct v4l2_ctrl_handler *v4l2_ctrl_request_hdl_find(struct media_request *req, + struct v4l2_ctrl_handler *parent) +{ + struct media_request_object *obj; + + if (WARN_ON(req->state != MEDIA_REQUEST_STATE_VALIDATING && + req->state != MEDIA_REQUEST_STATE_QUEUED)) + return NULL; + + obj = media_request_object_find(req, &req_ops, parent); + if (obj) + return container_of(obj, struct v4l2_ctrl_handler, req_obj); + return NULL; +} +EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_find); + +struct v4l2_ctrl * +v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id) +{ + struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id); + + return (ref && ref->valid_p_req) ? ref->ctrl : NULL; +} +EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find); + +static int v4l2_ctrl_request_bind(struct media_request *req, + struct v4l2_ctrl_handler *hdl, + struct v4l2_ctrl_handler *from) +{ + int ret; + + ret = v4l2_ctrl_request_clone(hdl, from); + + if (!ret) { + ret = media_request_object_bind(req, &req_ops, + from, false, &hdl->req_obj); + if (!ret) { + mutex_lock(from->lock); + list_add_tail(&hdl->requests, &from->requests); + mutex_unlock(from->lock); + } + } + return ret; +} + +static struct media_request_object * +v4l2_ctrls_find_req_obj(struct v4l2_ctrl_handler *hdl, + struct media_request *req, bool set) +{ + struct media_request_object *obj; + struct v4l2_ctrl_handler *new_hdl; + int ret; + + if (IS_ERR(req)) + return ERR_CAST(req); + + if (set && WARN_ON(req->state != MEDIA_REQUEST_STATE_UPDATING)) + return ERR_PTR(-EBUSY); + + obj = media_request_object_find(req, &req_ops, hdl); + if (obj) + return obj; + /* + * If there are no controls in this completed request, + * then that can only happen if: + * + * 1) no controls were present in the queued request, and + * 2) v4l2_ctrl_request_complete() could not allocate a + * control handler object to store the completed state in. + * + * So return ENOMEM to indicate that there was an out-of-memory + * error. + */ + if (!set) + return ERR_PTR(-ENOMEM); + + new_hdl = kzalloc(sizeof(*new_hdl), GFP_KERNEL); + if (!new_hdl) + return ERR_PTR(-ENOMEM); + + obj = &new_hdl->req_obj; + ret = v4l2_ctrl_handler_init(new_hdl, (hdl->nr_of_buckets - 1) * 8); + if (!ret) + ret = v4l2_ctrl_request_bind(req, new_hdl, hdl); + if (ret) { + v4l2_ctrl_handler_free(new_hdl); + kfree(new_hdl); + return ERR_PTR(ret); + } + + media_request_object_get(obj); + return obj; +} + +int v4l2_g_ext_ctrls_request(struct v4l2_ctrl_handler *hdl, struct video_device *vdev, + struct media_device *mdev, struct v4l2_ext_controls *cs) +{ + struct media_request_object *obj = NULL; + struct media_request *req = NULL; + int ret; + + if (!mdev || cs->request_fd < 0) + return -EINVAL; + + req = media_request_get_by_fd(mdev, cs->request_fd); + if (IS_ERR(req)) + return PTR_ERR(req); + + if (req->state != MEDIA_REQUEST_STATE_COMPLETE) { + media_request_put(req); + return -EACCES; + } + + ret = media_request_lock_for_access(req); + if (ret) { + media_request_put(req); + return ret; + } + + obj = v4l2_ctrls_find_req_obj(hdl, req, false); + if (IS_ERR(obj)) { + media_request_unlock_for_access(req); + media_request_put(req); + return PTR_ERR(obj); + } + + hdl = container_of(obj, struct v4l2_ctrl_handler, + req_obj); + ret = v4l2_g_ext_ctrls_common(hdl, cs, vdev); + + media_request_unlock_for_access(req); + media_request_object_put(obj); + media_request_put(req); + return ret; +} + +int try_set_ext_ctrls_request(struct v4l2_fh *fh, + struct v4l2_ctrl_handler *hdl, + struct video_device *vdev, + struct media_device *mdev, + struct v4l2_ext_controls *cs, bool set) +{ + struct media_request_object *obj = NULL; + struct media_request *req = NULL; + int ret; + + if (!mdev) { + dprintk(vdev, "%s: missing media device\n", + video_device_node_name(vdev)); + return -EINVAL; + } + + if (cs->request_fd < 0) { + dprintk(vdev, "%s: invalid request fd %d\n", + video_device_node_name(vdev), cs->request_fd); + return -EINVAL; + } + + req = media_request_get_by_fd(mdev, cs->request_fd); + if (IS_ERR(req)) { + dprintk(vdev, "%s: cannot find request fd %d\n", + video_device_node_name(vdev), cs->request_fd); + return PTR_ERR(req); + } + + ret = media_request_lock_for_update(req); + if (ret) { + dprintk(vdev, "%s: cannot lock request fd %d\n", + video_device_node_name(vdev), cs->request_fd); + media_request_put(req); + return ret; + } + + obj = v4l2_ctrls_find_req_obj(hdl, req, set); + if (IS_ERR(obj)) { + dprintk(vdev, + "%s: cannot find request object for request fd %d\n", + video_device_node_name(vdev), + cs->request_fd); + media_request_unlock_for_update(req); + media_request_put(req); + return PTR_ERR(obj); + } + + hdl = container_of(obj, struct v4l2_ctrl_handler, + req_obj); + ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set); + if (ret) + dprintk(vdev, + "%s: try_set_ext_ctrls_common failed (%d)\n", + video_device_node_name(vdev), ret); + + media_request_unlock_for_update(req); + media_request_object_put(obj); + media_request_put(req); + + return ret; +} + +void v4l2_ctrl_request_complete(struct media_request *req, + struct v4l2_ctrl_handler *main_hdl) +{ + struct media_request_object *obj; + struct v4l2_ctrl_handler *hdl; + struct v4l2_ctrl_ref *ref; + + if (!req || !main_hdl) + return; + + /* + * Note that it is valid if nothing was found. It means + * that this request doesn't have any controls and so just + * wants to leave the controls unchanged. + */ + obj = media_request_object_find(req, &req_ops, main_hdl); + if (!obj) { + int ret; + + /* Create a new request so the driver can return controls */ + hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); + if (!hdl) + return; + + ret = v4l2_ctrl_handler_init(hdl, (main_hdl->nr_of_buckets - 1) * 8); + if (!ret) + ret = v4l2_ctrl_request_bind(req, hdl, main_hdl); + if (ret) { + v4l2_ctrl_handler_free(hdl); + kfree(hdl); + return; + } + hdl->request_is_queued = true; + obj = media_request_object_find(req, &req_ops, main_hdl); + } + hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj); + + list_for_each_entry(ref, &hdl->ctrl_refs, node) { + struct v4l2_ctrl *ctrl = ref->ctrl; + struct v4l2_ctrl *master = ctrl->cluster[0]; + unsigned int i; + + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { + v4l2_ctrl_lock(master); + /* g_volatile_ctrl will update the current control values */ + for (i = 0; i < master->ncontrols; i++) + cur_to_new(master->cluster[i]); + call_op(master, g_volatile_ctrl); + new_to_req(ref); + v4l2_ctrl_unlock(master); + continue; + } + if (ref->valid_p_req) + continue; + + /* Copy the current control value into the request */ + v4l2_ctrl_lock(ctrl); + cur_to_req(ref); + v4l2_ctrl_unlock(ctrl); + } + + mutex_lock(main_hdl->lock); + WARN_ON(!hdl->request_is_queued); + list_del_init(&hdl->requests_queued); + hdl->request_is_queued = false; + mutex_unlock(main_hdl->lock); + media_request_object_complete(obj); + media_request_object_put(obj); +} +EXPORT_SYMBOL(v4l2_ctrl_request_complete); + +int v4l2_ctrl_request_setup(struct media_request *req, + struct v4l2_ctrl_handler *main_hdl) +{ + struct media_request_object *obj; + struct v4l2_ctrl_handler *hdl; + struct v4l2_ctrl_ref *ref; + int ret = 0; + + if (!req || !main_hdl) + return 0; + + if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED)) + return -EBUSY; + + /* + * Note that it is valid if nothing was found. It means + * that this request doesn't have any controls and so just + * wants to leave the controls unchanged. + */ + obj = media_request_object_find(req, &req_ops, main_hdl); + if (!obj) + return 0; + if (obj->completed) { + media_request_object_put(obj); + return -EBUSY; + } + hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj); + + list_for_each_entry(ref, &hdl->ctrl_refs, node) + ref->req_done = false; + + list_for_each_entry(ref, &hdl->ctrl_refs, node) { + struct v4l2_ctrl *ctrl = ref->ctrl; + struct v4l2_ctrl *master = ctrl->cluster[0]; + bool have_new_data = false; + int i; + + /* + * Skip if this control was already handled by a cluster. + * Skip button controls and read-only controls. + */ + if (ref->req_done || (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)) + continue; + + v4l2_ctrl_lock(master); + for (i = 0; i < master->ncontrols; i++) { + if (master->cluster[i]) { + struct v4l2_ctrl_ref *r = + find_ref(hdl, master->cluster[i]->id); + + if (r->valid_p_req) { + have_new_data = true; + break; + } + } + } + if (!have_new_data) { + v4l2_ctrl_unlock(master); + continue; + } + + for (i = 0; i < master->ncontrols; i++) { + if (master->cluster[i]) { + struct v4l2_ctrl_ref *r = + find_ref(hdl, master->cluster[i]->id); + + req_to_new(r); + master->cluster[i]->is_new = 1; + r->req_done = true; + } + } + /* + * For volatile autoclusters that are currently in auto mode + * we need to discover if it will be set to manual mode. + * If so, then we have to copy the current volatile values + * first since those will become the new manual values (which + * may be overwritten by explicit new values from this set + * of controls). + */ + if (master->is_auto && master->has_volatiles && + !is_cur_manual(master)) { + s32 new_auto_val = *master->p_new.p_s32; + + /* + * If the new value == the manual value, then copy + * the current volatile values. + */ + if (new_auto_val == master->manual_mode_value) + update_from_auto_cluster(master); + } + + ret = try_or_set_cluster(NULL, master, true, 0); + v4l2_ctrl_unlock(master); + + if (ret) + break; + } + + media_request_object_put(obj); + return ret; +} +EXPORT_SYMBOL(v4l2_ctrl_request_setup); diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c deleted file mode 100644 index 09992e7..0000000 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ /dev/null @@ -1,5111 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - V4L2 controls framework implementation. - - Copyright (C) 2010 Hans Verkuil - - */ - -#define pr_fmt(fmt) "v4l2-ctrls: " fmt - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define dprintk(vdev, fmt, arg...) do { \ - if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \ - printk(KERN_DEBUG pr_fmt("%s: %s: " fmt), \ - __func__, video_device_node_name(vdev), ##arg); \ -} while (0) - -#define has_op(master, op) \ - (master->ops && master->ops->op) -#define call_op(master, op) \ - (has_op(master, op) ? master->ops->op(master) : 0) - -static const union v4l2_ctrl_ptr ptr_null; - -/* Internal temporary helper struct, one for each v4l2_ext_control */ -struct v4l2_ctrl_helper { - /* Pointer to the control reference of the master control */ - struct v4l2_ctrl_ref *mref; - /* The control ref corresponding to the v4l2_ext_control ID field. */ - struct v4l2_ctrl_ref *ref; - /* v4l2_ext_control index of the next control belonging to the - same cluster, or 0 if there isn't any. */ - u32 next; -}; - -/* Small helper function to determine if the autocluster is set to manual - mode. */ -static bool is_cur_manual(const struct v4l2_ctrl *master) -{ - return master->is_auto && master->cur.val == master->manual_mode_value; -} - -/* Same as above, but this checks the against the new value instead of the - current value. */ -static bool is_new_manual(const struct v4l2_ctrl *master) -{ - return master->is_auto && master->val == master->manual_mode_value; -} - -/* Default intra MPEG-2 quantisation coefficients, from the specification. */ -static const u8 mpeg2_intra_quant_matrix[64] = { - 8, 16, 16, 19, 16, 19, 22, 22, - 22, 22, 22, 22, 26, 24, 26, 27, - 27, 27, 26, 26, 26, 26, 27, 27, - 27, 29, 29, 29, 34, 34, 34, 29, - 29, 29, 27, 27, 29, 29, 32, 32, - 34, 34, 37, 38, 37, 35, 35, 34, - 35, 38, 38, 40, 40, 40, 48, 48, - 46, 46, 56, 56, 58, 69, 69, 83 -}; - -/* Returns NULL or a character pointer array containing the menu for - the given control ID. The pointer array ends with a NULL pointer. - An empty string signifies a menu entry that is invalid. This allows - drivers to disable certain options if it is not supported. */ -const char * const *v4l2_ctrl_get_menu(u32 id) -{ - static const char * const mpeg_audio_sampling_freq[] = { - "44.1 kHz", - "48 kHz", - "32 kHz", - NULL - }; - static const char * const mpeg_audio_encoding[] = { - "MPEG-1/2 Layer I", - "MPEG-1/2 Layer II", - "MPEG-1/2 Layer III", - "MPEG-2/4 AAC", - "AC-3", - NULL - }; - static const char * const mpeg_audio_l1_bitrate[] = { - "32 kbps", - "64 kbps", - "96 kbps", - "128 kbps", - "160 kbps", - "192 kbps", - "224 kbps", - "256 kbps", - "288 kbps", - "320 kbps", - "352 kbps", - "384 kbps", - "416 kbps", - "448 kbps", - NULL - }; - static const char * const mpeg_audio_l2_bitrate[] = { - "32 kbps", - "48 kbps", - "56 kbps", - "64 kbps", - "80 kbps", - "96 kbps", - "112 kbps", - "128 kbps", - "160 kbps", - "192 kbps", - "224 kbps", - "256 kbps", - "320 kbps", - "384 kbps", - NULL - }; - static const char * const mpeg_audio_l3_bitrate[] = { - "32 kbps", - "40 kbps", - "48 kbps", - "56 kbps", - "64 kbps", - "80 kbps", - "96 kbps", - "112 kbps", - "128 kbps", - "160 kbps", - "192 kbps", - "224 kbps", - "256 kbps", - "320 kbps", - NULL - }; - static const char * const mpeg_audio_ac3_bitrate[] = { - "32 kbps", - "40 kbps", - "48 kbps", - "56 kbps", - "64 kbps", - "80 kbps", - "96 kbps", - "112 kbps", - "128 kbps", - "160 kbps", - "192 kbps", - "224 kbps", - "256 kbps", - "320 kbps", - "384 kbps", - "448 kbps", - "512 kbps", - "576 kbps", - "640 kbps", - NULL - }; - static const char * const mpeg_audio_mode[] = { - "Stereo", - "Joint Stereo", - "Dual", - "Mono", - NULL - }; - static const char * const mpeg_audio_mode_extension[] = { - "Bound 4", - "Bound 8", - "Bound 12", - "Bound 16", - NULL - }; - static const char * const mpeg_audio_emphasis[] = { - "No Emphasis", - "50/15 us", - "CCITT J17", - NULL - }; - static const char * const mpeg_audio_crc[] = { - "No CRC", - "16-bit CRC", - NULL - }; - static const char * const mpeg_audio_dec_playback[] = { - "Auto", - "Stereo", - "Left", - "Right", - "Mono", - "Swapped Stereo", - NULL - }; - static const char * const mpeg_video_encoding[] = { - "MPEG-1", - "MPEG-2", - "MPEG-4 AVC", - NULL - }; - static const char * const mpeg_video_aspect[] = { - "1x1", - "4x3", - "16x9", - "2.21x1", - NULL - }; - static const char * const mpeg_video_bitrate_mode[] = { - "Variable Bitrate", - "Constant Bitrate", - "Constant Quality", - NULL - }; - static const char * const mpeg_stream_type[] = { - "MPEG-2 Program Stream", - "MPEG-2 Transport Stream", - "MPEG-1 System Stream", - "MPEG-2 DVD-compatible Stream", - "MPEG-1 VCD-compatible Stream", - "MPEG-2 SVCD-compatible Stream", - NULL - }; - static const char * const mpeg_stream_vbi_fmt[] = { - "No VBI", - "Private Packet, IVTV Format", - NULL - }; - static const char * const camera_power_line_frequency[] = { - "Disabled", - "50 Hz", - "60 Hz", - "Auto", - NULL - }; - static const char * const camera_exposure_auto[] = { - "Auto Mode", - "Manual Mode", - "Shutter Priority Mode", - "Aperture Priority Mode", - NULL - }; - static const char * const camera_exposure_metering[] = { - "Average", - "Center Weighted", - "Spot", - "Matrix", - NULL - }; - static const char * const camera_auto_focus_range[] = { - "Auto", - "Normal", - "Macro", - "Infinity", - NULL - }; - static const char * const colorfx[] = { - "None", - "Black & White", - "Sepia", - "Negative", - "Emboss", - "Sketch", - "Sky Blue", - "Grass Green", - "Skin Whiten", - "Vivid", - "Aqua", - "Art Freeze", - "Silhouette", - "Solarization", - "Antique", - "Set Cb/Cr", - NULL - }; - static const char * const auto_n_preset_white_balance[] = { - "Manual", - "Auto", - "Incandescent", - "Fluorescent", - "Fluorescent H", - "Horizon", - "Daylight", - "Flash", - "Cloudy", - "Shade", - NULL, - }; - static const char * const camera_iso_sensitivity_auto[] = { - "Manual", - "Auto", - NULL - }; - static const char * const scene_mode[] = { - "None", - "Backlight", - "Beach/Snow", - "Candle Light", - "Dusk/Dawn", - "Fall Colors", - "Fireworks", - "Landscape", - "Night", - "Party/Indoor", - "Portrait", - "Sports", - "Sunset", - "Text", - NULL - }; - static const char * const tune_emphasis[] = { - "None", - "50 Microseconds", - "75 Microseconds", - NULL, - }; - static const char * const header_mode[] = { - "Separate Buffer", - "Joined With 1st Frame", - NULL, - }; - static const char * const multi_slice[] = { - "Single", - "Max Macroblocks", - "Max Bytes", - NULL, - }; - static const char * const entropy_mode[] = { - "CAVLC", - "CABAC", - NULL, - }; - static const char * const mpeg_h264_level[] = { - "1", - "1b", - "1.1", - "1.2", - "1.3", - "2", - "2.1", - "2.2", - "3", - "3.1", - "3.2", - "4", - "4.1", - "4.2", - "5", - "5.1", - "5.2", - "6.0", - "6.1", - "6.2", - NULL, - }; - static const char * const h264_loop_filter[] = { - "Enabled", - "Disabled", - "Disabled at Slice Boundary", - NULL, - }; - static const char * const h264_profile[] = { - "Baseline", - "Constrained Baseline", - "Main", - "Extended", - "High", - "High 10", - "High 422", - "High 444 Predictive", - "High 10 Intra", - "High 422 Intra", - "High 444 Intra", - "CAVLC 444 Intra", - "Scalable Baseline", - "Scalable High", - "Scalable High Intra", - "Stereo High", - "Multiview High", - "Constrained High", - NULL, - }; - static const char * const vui_sar_idc[] = { - "Unspecified", - "1:1", - "12:11", - "10:11", - "16:11", - "40:33", - "24:11", - "20:11", - "32:11", - "80:33", - "18:11", - "15:11", - "64:33", - "160:99", - "4:3", - "3:2", - "2:1", - "Extended SAR", - NULL, - }; - static const char * const h264_fp_arrangement_type[] = { - "Checkerboard", - "Column", - "Row", - "Side by Side", - "Top Bottom", - "Temporal", - NULL, - }; - static const char * const h264_fmo_map_type[] = { - "Interleaved Slices", - "Scattered Slices", - "Foreground with Leftover", - "Box Out", - "Raster Scan", - "Wipe Scan", - "Explicit", - NULL, - }; - static const char * const h264_decode_mode[] = { - "Slice-Based", - "Frame-Based", - NULL, - }; - static const char * const h264_start_code[] = { - "No Start Code", - "Annex B Start Code", - NULL, - }; - static const char * const h264_hierarchical_coding_type[] = { - "Hier Coding B", - "Hier Coding P", - NULL, - }; - static const char * const mpeg_mpeg2_level[] = { - "Low", - "Main", - "High 1440", - "High", - NULL, - }; - static const char * const mpeg2_profile[] = { - "Simple", - "Main", - "SNR Scalable", - "Spatially Scalable", - "High", - NULL, - }; - static const char * const mpeg_mpeg4_level[] = { - "0", - "0b", - "1", - "2", - "3", - "3b", - "4", - "5", - NULL, - }; - static const char * const mpeg4_profile[] = { - "Simple", - "Advanced Simple", - "Core", - "Simple Scalable", - "Advanced Coding Efficiency", - NULL, - }; - - static const char * const vpx_golden_frame_sel[] = { - "Use Previous Frame", - "Use Previous Specific Frame", - NULL, - }; - static const char * const vp8_profile[] = { - "0", - "1", - "2", - "3", - NULL, - }; - static const char * const vp9_profile[] = { - "0", - "1", - "2", - "3", - NULL, - }; - static const char * const vp9_level[] = { - "1", - "1.1", - "2", - "2.1", - "3", - "3.1", - "4", - "4.1", - "5", - "5.1", - "5.2", - "6", - "6.1", - "6.2", - NULL, - }; - - static const char * const flash_led_mode[] = { - "Off", - "Flash", - "Torch", - NULL, - }; - static const char * const flash_strobe_source[] = { - "Software", - "External", - NULL, - }; - - static const char * const jpeg_chroma_subsampling[] = { - "4:4:4", - "4:2:2", - "4:2:0", - "4:1:1", - "4:1:0", - "Gray", - NULL, - }; - static const char * const dv_tx_mode[] = { - "DVI-D", - "HDMI", - NULL, - }; - static const char * const dv_rgb_range[] = { - "Automatic", - "RGB Limited Range (16-235)", - "RGB Full Range (0-255)", - NULL, - }; - static const char * const dv_it_content_type[] = { - "Graphics", - "Photo", - "Cinema", - "Game", - "No IT Content", - NULL, - }; - static const char * const detect_md_mode[] = { - "Disabled", - "Global", - "Threshold Grid", - "Region Grid", - NULL, - }; - - static const char * const hevc_profile[] = { - "Main", - "Main Still Picture", - "Main 10", - NULL, - }; - static const char * const hevc_level[] = { - "1", - "2", - "2.1", - "3", - "3.1", - "4", - "4.1", - "5", - "5.1", - "5.2", - "6", - "6.1", - "6.2", - NULL, - }; - static const char * const hevc_hierarchial_coding_type[] = { - "B", - "P", - NULL, - }; - static const char * const hevc_refresh_type[] = { - "None", - "CRA", - "IDR", - NULL, - }; - static const char * const hevc_size_of_length_field[] = { - "0", - "1", - "2", - "4", - NULL, - }; - static const char * const hevc_tier[] = { - "Main", - "High", - NULL, - }; - static const char * const hevc_loop_filter_mode[] = { - "Disabled", - "Enabled", - "Disabled at slice boundary", - "NULL", - }; - static const char * const hevc_decode_mode[] = { - "Slice-Based", - "Frame-Based", - NULL, - }; - static const char * const hevc_start_code[] = { - "No Start Code", - "Annex B Start Code", - NULL, - }; - static const char * const camera_orientation[] = { - "Front", - "Back", - "External", - NULL, - }; - static const char * const mpeg_video_frame_skip[] = { - "Disabled", - "Level Limit", - "VBV/CPB Limit", - NULL, - }; - - switch (id) { - case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: - return mpeg_audio_sampling_freq; - case V4L2_CID_MPEG_AUDIO_ENCODING: - return mpeg_audio_encoding; - case V4L2_CID_MPEG_AUDIO_L1_BITRATE: - return mpeg_audio_l1_bitrate; - case V4L2_CID_MPEG_AUDIO_L2_BITRATE: - return mpeg_audio_l2_bitrate; - case V4L2_CID_MPEG_AUDIO_L3_BITRATE: - return mpeg_audio_l3_bitrate; - case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: - return mpeg_audio_ac3_bitrate; - case V4L2_CID_MPEG_AUDIO_MODE: - return mpeg_audio_mode; - case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: - return mpeg_audio_mode_extension; - case V4L2_CID_MPEG_AUDIO_EMPHASIS: - return mpeg_audio_emphasis; - case V4L2_CID_MPEG_AUDIO_CRC: - return mpeg_audio_crc; - case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: - case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: - return mpeg_audio_dec_playback; - case V4L2_CID_MPEG_VIDEO_ENCODING: - return mpeg_video_encoding; - case V4L2_CID_MPEG_VIDEO_ASPECT: - return mpeg_video_aspect; - case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: - return mpeg_video_bitrate_mode; - case V4L2_CID_MPEG_STREAM_TYPE: - return mpeg_stream_type; - case V4L2_CID_MPEG_STREAM_VBI_FMT: - return mpeg_stream_vbi_fmt; - case V4L2_CID_POWER_LINE_FREQUENCY: - return camera_power_line_frequency; - case V4L2_CID_EXPOSURE_AUTO: - return camera_exposure_auto; - case V4L2_CID_EXPOSURE_METERING: - return camera_exposure_metering; - case V4L2_CID_AUTO_FOCUS_RANGE: - return camera_auto_focus_range; - case V4L2_CID_COLORFX: - return colorfx; - case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: - return auto_n_preset_white_balance; - case V4L2_CID_ISO_SENSITIVITY_AUTO: - return camera_iso_sensitivity_auto; - case V4L2_CID_SCENE_MODE: - return scene_mode; - case V4L2_CID_TUNE_PREEMPHASIS: - return tune_emphasis; - case V4L2_CID_TUNE_DEEMPHASIS: - return tune_emphasis; - case V4L2_CID_FLASH_LED_MODE: - return flash_led_mode; - case V4L2_CID_FLASH_STROBE_SOURCE: - return flash_strobe_source; - case V4L2_CID_MPEG_VIDEO_HEADER_MODE: - return header_mode; - case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: - return mpeg_video_frame_skip; - case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: - return multi_slice; - case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: - return entropy_mode; - case V4L2_CID_MPEG_VIDEO_H264_LEVEL: - return mpeg_h264_level; - case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: - return h264_loop_filter; - case V4L2_CID_MPEG_VIDEO_H264_PROFILE: - return h264_profile; - case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: - return vui_sar_idc; - case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: - return h264_fp_arrangement_type; - case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: - return h264_fmo_map_type; - case V4L2_CID_STATELESS_H264_DECODE_MODE: - return h264_decode_mode; - case V4L2_CID_STATELESS_H264_START_CODE: - return h264_start_code; - case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: - return h264_hierarchical_coding_type; - case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: - return mpeg_mpeg2_level; - case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: - return mpeg2_profile; - case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: - return mpeg_mpeg4_level; - case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: - return mpeg4_profile; - case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: - return vpx_golden_frame_sel; - case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: - return vp8_profile; - case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: - return vp9_profile; - case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: - return vp9_level; - case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: - return jpeg_chroma_subsampling; - case V4L2_CID_DV_TX_MODE: - return dv_tx_mode; - case V4L2_CID_DV_TX_RGB_RANGE: - case V4L2_CID_DV_RX_RGB_RANGE: - return dv_rgb_range; - case V4L2_CID_DV_TX_IT_CONTENT_TYPE: - case V4L2_CID_DV_RX_IT_CONTENT_TYPE: - return dv_it_content_type; - case V4L2_CID_DETECT_MD_MODE: - return detect_md_mode; - case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: - return hevc_profile; - case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: - return hevc_level; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: - return hevc_hierarchial_coding_type; - case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: - return hevc_refresh_type; - case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: - return hevc_size_of_length_field; - case V4L2_CID_MPEG_VIDEO_HEVC_TIER: - return hevc_tier; - case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: - return hevc_loop_filter_mode; - case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: - return hevc_decode_mode; - case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: - return hevc_start_code; - case V4L2_CID_CAMERA_ORIENTATION: - return camera_orientation; - default: - return NULL; - } -} -EXPORT_SYMBOL(v4l2_ctrl_get_menu); - -#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; }) -/* - * Returns NULL or an s64 type array containing the menu for given - * control ID. The total number of the menu items is returned in @len. - */ -const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len) -{ - static const s64 qmenu_int_vpx_num_partitions[] = { - 1, 2, 4, 8, - }; - - static const s64 qmenu_int_vpx_num_ref_frames[] = { - 1, 2, 3, - }; - - switch (id) { - case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: - return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len); - case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: - return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len); - default: - *len = 0; - return NULL; - } -} -EXPORT_SYMBOL(v4l2_ctrl_get_int_menu); - -/* Return the control name. */ -const char *v4l2_ctrl_get_name(u32 id) -{ - switch (id) { - /* USER controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_USER_CLASS: return "User Controls"; - case V4L2_CID_BRIGHTNESS: return "Brightness"; - case V4L2_CID_CONTRAST: return "Contrast"; - case V4L2_CID_SATURATION: return "Saturation"; - case V4L2_CID_HUE: return "Hue"; - case V4L2_CID_AUDIO_VOLUME: return "Volume"; - case V4L2_CID_AUDIO_BALANCE: return "Balance"; - case V4L2_CID_AUDIO_BASS: return "Bass"; - case V4L2_CID_AUDIO_TREBLE: return "Treble"; - case V4L2_CID_AUDIO_MUTE: return "Mute"; - case V4L2_CID_AUDIO_LOUDNESS: return "Loudness"; - case V4L2_CID_BLACK_LEVEL: return "Black Level"; - case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic"; - case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance"; - case V4L2_CID_RED_BALANCE: return "Red Balance"; - case V4L2_CID_BLUE_BALANCE: return "Blue Balance"; - case V4L2_CID_GAMMA: return "Gamma"; - case V4L2_CID_EXPOSURE: return "Exposure"; - case V4L2_CID_AUTOGAIN: return "Gain, Automatic"; - case V4L2_CID_GAIN: return "Gain"; - case V4L2_CID_HFLIP: return "Horizontal Flip"; - case V4L2_CID_VFLIP: return "Vertical Flip"; - case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency"; - case V4L2_CID_HUE_AUTO: return "Hue, Automatic"; - case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature"; - case V4L2_CID_SHARPNESS: return "Sharpness"; - case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation"; - case V4L2_CID_CHROMA_AGC: return "Chroma AGC"; - case V4L2_CID_COLOR_KILLER: return "Color Killer"; - case V4L2_CID_COLORFX: return "Color Effects"; - case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic"; - case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter"; - case V4L2_CID_ROTATE: return "Rotate"; - case V4L2_CID_BG_COLOR: return "Background Color"; - case V4L2_CID_CHROMA_GAIN: return "Chroma Gain"; - case V4L2_CID_ILLUMINATORS_1: return "Illuminator 1"; - case V4L2_CID_ILLUMINATORS_2: return "Illuminator 2"; - case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: return "Min Number of Capture Buffers"; - case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: return "Min Number of Output Buffers"; - case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component"; - case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr"; - - /* Codec controls */ - /* The MPEG controls are applicable to all codec controls - * and the 'MPEG' part of the define is historical */ - /* Keep the order of the 'case's the same as in videodev2.h! */ - case V4L2_CID_CODEC_CLASS: return "Codec Controls"; - case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type"; - case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID"; - case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID"; - case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID"; - case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID"; - case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID"; - case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID"; - case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format"; - case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency"; - case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding"; - case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate"; - case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate"; - case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate"; - case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode"; - case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension"; - case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis"; - case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC"; - case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute"; - case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate"; - case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate"; - case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: return "Audio Playback"; - case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback"; - case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding"; - case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect"; - case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames"; - case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size"; - case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure"; - case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown"; - case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode"; - case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY: return "Constant Quality"; - case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate"; - case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate"; - case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation"; - case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute"; - case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV"; - case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface"; - case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable"; - case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs"; - case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable"; - case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control"; - case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode"; - case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC: return "Max Number of Reference Pics"; - case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: return "Frame Skip Mode"; - case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY: return "Display Delay"; - case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE: return "Display Delay Enable"; - case V4L2_CID_MPEG_VIDEO_AU_DELIMITER: return "Generate Access Unit Delimiters"; - case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP: return "H263 I-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP: return "H263 P-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP: return "H263 B-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_H263_MIN_QP: return "H263 Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_H263_MAX_QP: return "H263 Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: return "H264 I-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: return "H264 P-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP: return "H264 B-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_MAX_QP: return "H264 Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_MIN_QP: return "H264 Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: return "H264 8x8 Transform Enable"; - case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE: return "H264 CPB Buffer Size"; - case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: return "H264 Entropy Mode"; - case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: return "H264 I-Frame Period"; - case V4L2_CID_MPEG_VIDEO_H264_LEVEL: return "H264 Level"; - case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA: return "H264 Loop Filter Alpha Offset"; - case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA: return "H264 Loop Filter Beta Offset"; - case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: return "H264 Loop Filter Mode"; - case V4L2_CID_MPEG_VIDEO_H264_PROFILE: return "H264 Profile"; - case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT: return "Vertical Size of SAR"; - case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH: return "Horizontal Size of SAR"; - case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: return "Aspect Ratio VUI Enable"; - case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: return "VUI Aspect Ratio IDC"; - case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING: return "H264 Enable Frame Packing SEI"; - case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0: return "H264 Set Curr. Frame as Frame0"; - case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: return "H264 FP Arrangement Type"; - case V4L2_CID_MPEG_VIDEO_H264_FMO: return "H264 Flexible MB Ordering"; - case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: return "H264 Map Type for FMO"; - case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP: return "H264 FMO Number of Slice Groups"; - case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION: return "H264 FMO Direction of Change"; - case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE: return "H264 FMO Size of 1st Slice Grp"; - case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH: return "H264 FMO No. of Consecutive MBs"; - case V4L2_CID_MPEG_VIDEO_H264_ASO: return "H264 Arbitrary Slice Ordering"; - case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER: return "H264 ASO Slice Order"; - case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING: return "Enable H264 Hierarchical Coding"; - case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: return "H264 Hierarchical Coding Type"; - case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers"; - case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP: - return "H264 Set QP Value for HC Layers"; - case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION: - return "H264 Constrained Intra Pred"; - case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET: return "H264 Chroma QP Index Offset"; - case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MIN_QP: return "H264 I-Frame Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP: return "H264 I-Frame Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP: return "H264 P-Frame Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP: return "H264 P-Frame Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP: return "H264 B-Frame Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP: return "H264 B-Frame Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR: return "H264 Hierarchical Lay 0 Bitrate"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR: return "H264 Hierarchical Lay 1 Bitrate"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR: return "H264 Hierarchical Lay 2 Bitrate"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR: return "H264 Hierarchical Lay 3 Bitrate"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR: return "H264 Hierarchical Lay 4 Bitrate"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR: return "H264 Hierarchical Lay 5 Bitrate"; - case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR: return "H264 Hierarchical Lay 6 Bitrate"; - case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: return "MPEG2 Level"; - case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: return "MPEG2 Profile"; - case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: return "MPEG4 I-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: return "MPEG4 P-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP: return "MPEG4 B-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP: return "MPEG4 Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP: return "MPEG4 Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: return "MPEG4 Level"; - case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: return "MPEG4 Profile"; - case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: return "Quarter Pixel Search Enable"; - case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES: return "Maximum Bytes in a Slice"; - case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: return "Number of MBs in a Slice"; - case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: return "Slice Partitioning Method"; - case V4L2_CID_MPEG_VIDEO_VBV_SIZE: return "VBV Buffer Size"; - case V4L2_CID_MPEG_VIDEO_DEC_PTS: return "Video Decoder PTS"; - case V4L2_CID_MPEG_VIDEO_DEC_FRAME: return "Video Decoder Frame Count"; - case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR: return "Video Decoder Conceal Color"; - case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control"; - case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: return "Horizontal MV Search Range"; - case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range"; - case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header"; - case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame"; - case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID: return "Base Layer Priority ID"; - case V4L2_CID_MPEG_VIDEO_LTR_COUNT: return "LTR Count"; - case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: return "Frame LTR Index"; - case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: return "Use LTR Frames"; - case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value"; - case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value"; - - /* VPX controls */ - case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions"; - case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4: return "VPX Intra Mode Decision Disable"; - case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: return "VPX No. of Refs for P Frame"; - case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL: return "VPX Loop Filter Level Range"; - case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS: return "VPX Deblocking Effect Control"; - case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD: return "VPX Golden Frame Refresh Period"; - case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: return "VPX Golden Frame Indicator"; - case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP: return "VPX Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP: return "VPX Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP: return "VPX I-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX P-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: return "VP8 Profile"; - case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: return "VP9 Profile"; - case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: return "VP9 Level"; - - /* HEVC controls */ - case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP: return "HEVC I-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP: return "HEVC P-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP: return "HEVC B-Frame QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP: return "HEVC Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP: return "HEVC Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP: return "HEVC I-Frame Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP: return "HEVC I-Frame Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP: return "HEVC P-Frame Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP: return "HEVC P-Frame Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP: return "HEVC B-Frame Minimum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP: return "HEVC B-Frame Maximum QP Value"; - case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: return "HEVC Profile"; - case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: return "HEVC Level"; - case V4L2_CID_MPEG_VIDEO_HEVC_TIER: return "HEVC Tier"; - case V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION: return "HEVC Frame Rate Resolution"; - case V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH: return "HEVC Maximum Coding Unit Depth"; - case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: return "HEVC Refresh Type"; - case V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED: return "HEVC Constant Intra Prediction"; - case V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU: return "HEVC Lossless Encoding"; - case V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT: return "HEVC Wavefront"; - case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: return "HEVC Loop Filter"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP: return "HEVC QP Values"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: return "HEVC Hierarchical Coding Type"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER: return "HEVC Hierarchical Coding Layer"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP: return "HEVC Hierarchical Layer 0 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP: return "HEVC Hierarchical Layer 1 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP: return "HEVC Hierarchical Layer 2 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP: return "HEVC Hierarchical Layer 3 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP: return "HEVC Hierarchical Layer 4 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP: return "HEVC Hierarchical Layer 5 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP: return "HEVC Hierarchical Layer 6 QP"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_BR: return "HEVC Hierarchical Lay 0 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_BR: return "HEVC Hierarchical Lay 1 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_BR: return "HEVC Hierarchical Lay 2 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_BR: return "HEVC Hierarchical Lay 3 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_BR: return "HEVC Hierarchical Lay 4 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR: return "HEVC Hierarchical Lay 5 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR: return "HEVC Hierarchical Lay 6 BitRate"; - case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB: return "HEVC General PB"; - case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID: return "HEVC Temporal ID"; - case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING: return "HEVC Strong Intra Smoothing"; - case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT: return "HEVC Intra PU Split"; - case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION: return "HEVC TMV Prediction"; - case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1: return "HEVC Max Num of Candidate MVs"; - case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE: return "HEVC ENC Without Startcode"; - case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD: return "HEVC Num of I-Frame b/w 2 IDR"; - case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2: return "HEVC Loop Filter Beta Offset"; - case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2: return "HEVC Loop Filter TC Offset"; - case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: return "HEVC Size of Length Field"; - case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES: return "Reference Frames for a P-Frame"; - case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR: return "Prepend SPS and PPS to IDR"; - case V4L2_CID_MPEG_VIDEO_HEVC_SPS: return "HEVC Sequence Parameter Set"; - case V4L2_CID_MPEG_VIDEO_HEVC_PPS: return "HEVC Picture Parameter Set"; - case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters"; - case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: return "HEVC Decode Mode"; - case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code"; - - /* CAMERA controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_CAMERA_CLASS: return "Camera Controls"; - case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure"; - case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute"; - case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate"; - case V4L2_CID_PAN_RELATIVE: return "Pan, Relative"; - case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative"; - case V4L2_CID_PAN_RESET: return "Pan, Reset"; - case V4L2_CID_TILT_RESET: return "Tilt, Reset"; - case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute"; - case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute"; - case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute"; - case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative"; - case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic Continuous"; - case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute"; - case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative"; - case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous"; - case V4L2_CID_PRIVACY: return "Privacy"; - case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute"; - case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative"; - case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias"; - case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset"; - case V4L2_CID_WIDE_DYNAMIC_RANGE: return "Wide Dynamic Range"; - case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization"; - case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity"; - case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto"; - case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode"; - case V4L2_CID_SCENE_MODE: return "Scene Mode"; - case V4L2_CID_3A_LOCK: return "3A Lock"; - case V4L2_CID_AUTO_FOCUS_START: return "Auto Focus, Start"; - case V4L2_CID_AUTO_FOCUS_STOP: return "Auto Focus, Stop"; - case V4L2_CID_AUTO_FOCUS_STATUS: return "Auto Focus, Status"; - case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range"; - case V4L2_CID_PAN_SPEED: return "Pan, Speed"; - case V4L2_CID_TILT_SPEED: return "Tilt, Speed"; - case V4L2_CID_UNIT_CELL_SIZE: return "Unit Cell Size"; - case V4L2_CID_CAMERA_ORIENTATION: return "Camera Orientation"; - case V4L2_CID_CAMERA_SENSOR_ROTATION: return "Camera Sensor Rotation"; - - /* FM Radio Modulator controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls"; - case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation"; - case V4L2_CID_RDS_TX_PI: return "RDS Program ID"; - case V4L2_CID_RDS_TX_PTY: return "RDS Program Type"; - case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name"; - case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text"; - case V4L2_CID_RDS_TX_MONO_STEREO: return "RDS Stereo"; - case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: return "RDS Artificial Head"; - case V4L2_CID_RDS_TX_COMPRESSED: return "RDS Compressed"; - case V4L2_CID_RDS_TX_DYNAMIC_PTY: return "RDS Dynamic PTY"; - case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement"; - case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: return "RDS Traffic Program"; - case V4L2_CID_RDS_TX_MUSIC_SPEECH: return "RDS Music"; - case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: return "RDS Enable Alt Frequencies"; - case V4L2_CID_RDS_TX_ALT_FREQS: return "RDS Alternate Frequencies"; - case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled"; - case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time"; - case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation"; - case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled"; - case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain"; - case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold"; - case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time"; - case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time"; - case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled"; - case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation"; - case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency"; - case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-Emphasis"; - case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level"; - case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor"; - - /* Flash controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_FLASH_CLASS: return "Flash Controls"; - case V4L2_CID_FLASH_LED_MODE: return "LED Mode"; - case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe Source"; - case V4L2_CID_FLASH_STROBE: return "Strobe"; - case V4L2_CID_FLASH_STROBE_STOP: return "Stop Strobe"; - case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe Status"; - case V4L2_CID_FLASH_TIMEOUT: return "Strobe Timeout"; - case V4L2_CID_FLASH_INTENSITY: return "Intensity, Flash Mode"; - case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, Torch Mode"; - case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator"; - case V4L2_CID_FLASH_FAULT: return "Faults"; - case V4L2_CID_FLASH_CHARGE: return "Charge"; - case V4L2_CID_FLASH_READY: return "Ready to Strobe"; - - /* JPEG encoder controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_JPEG_CLASS: return "JPEG Compression Controls"; - case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: return "Chroma Subsampling"; - case V4L2_CID_JPEG_RESTART_INTERVAL: return "Restart Interval"; - case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality"; - case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers"; - - /* Image source controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_IMAGE_SOURCE_CLASS: return "Image Source Controls"; - case V4L2_CID_VBLANK: return "Vertical Blanking"; - case V4L2_CID_HBLANK: return "Horizontal Blanking"; - case V4L2_CID_ANALOGUE_GAIN: return "Analogue Gain"; - case V4L2_CID_TEST_PATTERN_RED: return "Red Pixel Value"; - case V4L2_CID_TEST_PATTERN_GREENR: return "Green (Red) Pixel Value"; - case V4L2_CID_TEST_PATTERN_BLUE: return "Blue Pixel Value"; - case V4L2_CID_TEST_PATTERN_GREENB: return "Green (Blue) Pixel Value"; - - /* Image processing controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_IMAGE_PROC_CLASS: return "Image Processing Controls"; - case V4L2_CID_LINK_FREQ: return "Link Frequency"; - case V4L2_CID_PIXEL_RATE: return "Pixel Rate"; - case V4L2_CID_TEST_PATTERN: return "Test Pattern"; - case V4L2_CID_DEINTERLACING_MODE: return "Deinterlacing Mode"; - case V4L2_CID_DIGITAL_GAIN: return "Digital Gain"; - - /* DV controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_DV_CLASS: return "Digital Video Controls"; - case V4L2_CID_DV_TX_HOTPLUG: return "Hotplug Present"; - case V4L2_CID_DV_TX_RXSENSE: return "RxSense Present"; - case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present"; - case V4L2_CID_DV_TX_MODE: return "Transmit Mode"; - case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range"; - case V4L2_CID_DV_TX_IT_CONTENT_TYPE: return "Tx IT Content Type"; - case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present"; - case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range"; - case V4L2_CID_DV_RX_IT_CONTENT_TYPE: return "Rx IT Content Type"; - - case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls"; - case V4L2_CID_TUNE_DEEMPHASIS: return "De-Emphasis"; - case V4L2_CID_RDS_RECEPTION: return "RDS Reception"; - case V4L2_CID_RF_TUNER_CLASS: return "RF Tuner Controls"; - case V4L2_CID_RF_TUNER_RF_GAIN: return "RF Gain"; - case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: return "LNA Gain, Auto"; - case V4L2_CID_RF_TUNER_LNA_GAIN: return "LNA Gain"; - case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: return "Mixer Gain, Auto"; - case V4L2_CID_RF_TUNER_MIXER_GAIN: return "Mixer Gain"; - case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: return "IF Gain, Auto"; - case V4L2_CID_RF_TUNER_IF_GAIN: return "IF Gain"; - case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: return "Bandwidth, Auto"; - case V4L2_CID_RF_TUNER_BANDWIDTH: return "Bandwidth"; - case V4L2_CID_RF_TUNER_PLL_LOCK: return "PLL Lock"; - case V4L2_CID_RDS_RX_PTY: return "RDS Program Type"; - case V4L2_CID_RDS_RX_PS_NAME: return "RDS PS Name"; - case V4L2_CID_RDS_RX_RADIO_TEXT: return "RDS Radio Text"; - case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement"; - case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: return "RDS Traffic Program"; - case V4L2_CID_RDS_RX_MUSIC_SPEECH: return "RDS Music"; - - /* Detection controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_DETECT_CLASS: return "Detection Controls"; - case V4L2_CID_DETECT_MD_MODE: return "Motion Detection Mode"; - case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold"; - case V4L2_CID_DETECT_MD_THRESHOLD_GRID: return "MD Threshold Grid"; - case V4L2_CID_DETECT_MD_REGION_GRID: return "MD Region Grid"; - - /* Stateless Codec controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_CODEC_STATELESS_CLASS: return "Stateless Codec Controls"; - case V4L2_CID_STATELESS_H264_DECODE_MODE: return "H264 Decode Mode"; - case V4L2_CID_STATELESS_H264_START_CODE: return "H264 Start Code"; - case V4L2_CID_STATELESS_H264_SPS: return "H264 Sequence Parameter Set"; - case V4L2_CID_STATELESS_H264_PPS: return "H264 Picture Parameter Set"; - case V4L2_CID_STATELESS_H264_SCALING_MATRIX: return "H264 Scaling Matrix"; - case V4L2_CID_STATELESS_H264_PRED_WEIGHTS: return "H264 Prediction Weight Table"; - case V4L2_CID_STATELESS_H264_SLICE_PARAMS: return "H264 Slice Parameters"; - case V4L2_CID_STATELESS_H264_DECODE_PARAMS: return "H264 Decode Parameters"; - case V4L2_CID_STATELESS_FWHT_PARAMS: return "FWHT Stateless Parameters"; - case V4L2_CID_STATELESS_VP8_FRAME: return "VP8 Frame Parameters"; - case V4L2_CID_STATELESS_MPEG2_SEQUENCE: return "MPEG-2 Sequence Header"; - case V4L2_CID_STATELESS_MPEG2_PICTURE: return "MPEG-2 Picture Header"; - case V4L2_CID_STATELESS_MPEG2_QUANTISATION: return "MPEG-2 Quantisation Matrices"; - - /* Colorimetry controls */ - /* Keep the order of the 'case's the same as in v4l2-controls.h! */ - case V4L2_CID_COLORIMETRY_CLASS: return "Colorimetry Controls"; - case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO: return "HDR10 Content Light Info"; - case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: return "HDR10 Mastering Display"; - default: - return NULL; - } -} -EXPORT_SYMBOL(v4l2_ctrl_get_name); - -void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, - s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags) -{ - *name = v4l2_ctrl_get_name(id); - *flags = 0; - - switch (id) { - case V4L2_CID_AUDIO_MUTE: - case V4L2_CID_AUDIO_LOUDNESS: - case V4L2_CID_AUTO_WHITE_BALANCE: - case V4L2_CID_AUTOGAIN: - case V4L2_CID_HFLIP: - case V4L2_CID_VFLIP: - case V4L2_CID_HUE_AUTO: - case V4L2_CID_CHROMA_AGC: - case V4L2_CID_COLOR_KILLER: - case V4L2_CID_AUTOBRIGHTNESS: - case V4L2_CID_MPEG_AUDIO_MUTE: - case V4L2_CID_MPEG_VIDEO_MUTE: - case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: - case V4L2_CID_MPEG_VIDEO_PULLDOWN: - case V4L2_CID_EXPOSURE_AUTO_PRIORITY: - case V4L2_CID_FOCUS_AUTO: - case V4L2_CID_PRIVACY: - case V4L2_CID_AUDIO_LIMITER_ENABLED: - case V4L2_CID_AUDIO_COMPRESSION_ENABLED: - case V4L2_CID_PILOT_TONE_ENABLED: - case V4L2_CID_ILLUMINATORS_1: - case V4L2_CID_ILLUMINATORS_2: - case V4L2_CID_FLASH_STROBE_STATUS: - case V4L2_CID_FLASH_CHARGE: - case V4L2_CID_FLASH_READY: - case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: - case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: - case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE: - case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: - case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: - case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: - case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: - case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: - case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: - case V4L2_CID_MPEG_VIDEO_AU_DELIMITER: - case V4L2_CID_WIDE_DYNAMIC_RANGE: - case V4L2_CID_IMAGE_STABILIZATION: - case V4L2_CID_RDS_RECEPTION: - case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: - case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: - case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: - case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: - case V4L2_CID_RF_TUNER_PLL_LOCK: - case V4L2_CID_RDS_TX_MONO_STEREO: - case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: - case V4L2_CID_RDS_TX_COMPRESSED: - case V4L2_CID_RDS_TX_DYNAMIC_PTY: - case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: - case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: - case V4L2_CID_RDS_TX_MUSIC_SPEECH: - case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: - case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: - case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: - case V4L2_CID_RDS_RX_MUSIC_SPEECH: - *type = V4L2_CTRL_TYPE_BOOLEAN; - *min = 0; - *max = *step = 1; - break; - case V4L2_CID_ROTATE: - *type = V4L2_CTRL_TYPE_INTEGER; - *flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; - break; - case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: - case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: - case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY: - *type = V4L2_CTRL_TYPE_INTEGER; - break; - case V4L2_CID_MPEG_VIDEO_LTR_COUNT: - *type = V4L2_CTRL_TYPE_INTEGER; - break; - case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: - *type = V4L2_CTRL_TYPE_INTEGER; - *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; - break; - case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: - *type = V4L2_CTRL_TYPE_BITMASK; - *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; - break; - case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: - case V4L2_CID_PAN_RESET: - case V4L2_CID_TILT_RESET: - case V4L2_CID_FLASH_STROBE: - case V4L2_CID_FLASH_STROBE_STOP: - case V4L2_CID_AUTO_FOCUS_START: - case V4L2_CID_AUTO_FOCUS_STOP: - case V4L2_CID_DO_WHITE_BALANCE: - *type = V4L2_CTRL_TYPE_BUTTON; - *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | - V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; - *min = *max = *step = *def = 0; - break; - case V4L2_CID_POWER_LINE_FREQUENCY: - case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: - case V4L2_CID_MPEG_AUDIO_ENCODING: - case V4L2_CID_MPEG_AUDIO_L1_BITRATE: - case V4L2_CID_MPEG_AUDIO_L2_BITRATE: - case V4L2_CID_MPEG_AUDIO_L3_BITRATE: - case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: - case V4L2_CID_MPEG_AUDIO_MODE: - case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: - case V4L2_CID_MPEG_AUDIO_EMPHASIS: - case V4L2_CID_MPEG_AUDIO_CRC: - case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: - case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: - case V4L2_CID_MPEG_VIDEO_ENCODING: - case V4L2_CID_MPEG_VIDEO_ASPECT: - case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: - case V4L2_CID_MPEG_STREAM_TYPE: - case V4L2_CID_MPEG_STREAM_VBI_FMT: - case V4L2_CID_EXPOSURE_AUTO: - case V4L2_CID_AUTO_FOCUS_RANGE: - case V4L2_CID_COLORFX: - case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: - case V4L2_CID_TUNE_PREEMPHASIS: - case V4L2_CID_FLASH_LED_MODE: - case V4L2_CID_FLASH_STROBE_SOURCE: - case V4L2_CID_MPEG_VIDEO_HEADER_MODE: - case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: - case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: - case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: - case V4L2_CID_MPEG_VIDEO_H264_LEVEL: - case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: - case V4L2_CID_MPEG_VIDEO_H264_PROFILE: - case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: - case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: - case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: - case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: - case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: - case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: - case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: - case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: - case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: - case V4L2_CID_ISO_SENSITIVITY_AUTO: - case V4L2_CID_EXPOSURE_METERING: - case V4L2_CID_SCENE_MODE: - case V4L2_CID_DV_TX_MODE: - case V4L2_CID_DV_TX_RGB_RANGE: - case V4L2_CID_DV_TX_IT_CONTENT_TYPE: - case V4L2_CID_DV_RX_RGB_RANGE: - case V4L2_CID_DV_RX_IT_CONTENT_TYPE: - case V4L2_CID_TEST_PATTERN: - case V4L2_CID_DEINTERLACING_MODE: - case V4L2_CID_TUNE_DEEMPHASIS: - case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: - case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: - case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: - case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: - case V4L2_CID_DETECT_MD_MODE: - case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: - case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: - case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: - case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: - case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: - case V4L2_CID_MPEG_VIDEO_HEVC_TIER: - case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: - case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: - case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: - case V4L2_CID_STATELESS_H264_DECODE_MODE: - case V4L2_CID_STATELESS_H264_START_CODE: - case V4L2_CID_CAMERA_ORIENTATION: - *type = V4L2_CTRL_TYPE_MENU; - break; - case V4L2_CID_LINK_FREQ: - *type = V4L2_CTRL_TYPE_INTEGER_MENU; - break; - case V4L2_CID_RDS_TX_PS_NAME: - case V4L2_CID_RDS_TX_RADIO_TEXT: - case V4L2_CID_RDS_RX_PS_NAME: - case V4L2_CID_RDS_RX_RADIO_TEXT: - *type = V4L2_CTRL_TYPE_STRING; - break; - case V4L2_CID_ISO_SENSITIVITY: - case V4L2_CID_AUTO_EXPOSURE_BIAS: - case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: - case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: - *type = V4L2_CTRL_TYPE_INTEGER_MENU; - break; - case V4L2_CID_USER_CLASS: - case V4L2_CID_CAMERA_CLASS: - case V4L2_CID_CODEC_CLASS: - case V4L2_CID_FM_TX_CLASS: - case V4L2_CID_FLASH_CLASS: - case V4L2_CID_JPEG_CLASS: - case V4L2_CID_IMAGE_SOURCE_CLASS: - case V4L2_CID_IMAGE_PROC_CLASS: - case V4L2_CID_DV_CLASS: - case V4L2_CID_FM_RX_CLASS: - case V4L2_CID_RF_TUNER_CLASS: - case V4L2_CID_DETECT_CLASS: - case V4L2_CID_CODEC_STATELESS_CLASS: - case V4L2_CID_COLORIMETRY_CLASS: - *type = V4L2_CTRL_TYPE_CTRL_CLASS; - /* You can neither read nor write these */ - *flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY; - *min = *max = *step = *def = 0; - break; - case V4L2_CID_BG_COLOR: - *type = V4L2_CTRL_TYPE_INTEGER; - *step = 1; - *min = 0; - /* Max is calculated as RGB888 that is 2^24 */ - *max = 0xFFFFFF; - break; - case V4L2_CID_FLASH_FAULT: - case V4L2_CID_JPEG_ACTIVE_MARKER: - case V4L2_CID_3A_LOCK: - case V4L2_CID_AUTO_FOCUS_STATUS: - case V4L2_CID_DV_TX_HOTPLUG: - case V4L2_CID_DV_TX_RXSENSE: - case V4L2_CID_DV_TX_EDID_PRESENT: - case V4L2_CID_DV_RX_POWER_PRESENT: - *type = V4L2_CTRL_TYPE_BITMASK; - break; - case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: - case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: - *type = V4L2_CTRL_TYPE_INTEGER; - *flags |= V4L2_CTRL_FLAG_READ_ONLY; - break; - case V4L2_CID_MPEG_VIDEO_DEC_PTS: - *type = V4L2_CTRL_TYPE_INTEGER64; - *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; - *min = *def = 0; - *max = 0x1ffffffffLL; - *step = 1; - break; - case V4L2_CID_MPEG_VIDEO_DEC_FRAME: - *type = V4L2_CTRL_TYPE_INTEGER64; - *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; - *min = *def = 0; - *max = 0x7fffffffffffffffLL; - *step = 1; - break; - case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR: - *type = V4L2_CTRL_TYPE_INTEGER64; - *min = 0; - /* default for 8 bit black, luma is 16, chroma is 128 */ - *def = 0x8000800010LL; - *max = 0xffffffffffffLL; - *step = 1; - break; - case V4L2_CID_PIXEL_RATE: - *type = V4L2_CTRL_TYPE_INTEGER64; - *flags |= V4L2_CTRL_FLAG_READ_ONLY; - break; - case V4L2_CID_DETECT_MD_REGION_GRID: - *type = V4L2_CTRL_TYPE_U8; - break; - case V4L2_CID_DETECT_MD_THRESHOLD_GRID: - *type = V4L2_CTRL_TYPE_U16; - break; - case V4L2_CID_RDS_TX_ALT_FREQS: - *type = V4L2_CTRL_TYPE_U32; - break; - case V4L2_CID_STATELESS_MPEG2_SEQUENCE: - *type = V4L2_CTRL_TYPE_MPEG2_SEQUENCE; - break; - case V4L2_CID_STATELESS_MPEG2_PICTURE: - *type = V4L2_CTRL_TYPE_MPEG2_PICTURE; - break; - case V4L2_CID_STATELESS_MPEG2_QUANTISATION: - *type = V4L2_CTRL_TYPE_MPEG2_QUANTISATION; - break; - case V4L2_CID_STATELESS_FWHT_PARAMS: - *type = V4L2_CTRL_TYPE_FWHT_PARAMS; - break; - case V4L2_CID_STATELESS_H264_SPS: - *type = V4L2_CTRL_TYPE_H264_SPS; - break; - case V4L2_CID_STATELESS_H264_PPS: - *type = V4L2_CTRL_TYPE_H264_PPS; - break; - case V4L2_CID_STATELESS_H264_SCALING_MATRIX: - *type = V4L2_CTRL_TYPE_H264_SCALING_MATRIX; - break; - case V4L2_CID_STATELESS_H264_SLICE_PARAMS: - *type = V4L2_CTRL_TYPE_H264_SLICE_PARAMS; - break; - case V4L2_CID_STATELESS_H264_DECODE_PARAMS: - *type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS; - break; - case V4L2_CID_STATELESS_H264_PRED_WEIGHTS: - *type = V4L2_CTRL_TYPE_H264_PRED_WEIGHTS; - break; - case V4L2_CID_STATELESS_VP8_FRAME: - *type = V4L2_CTRL_TYPE_VP8_FRAME; - break; - case V4L2_CID_MPEG_VIDEO_HEVC_SPS: - *type = V4L2_CTRL_TYPE_HEVC_SPS; - break; - case V4L2_CID_MPEG_VIDEO_HEVC_PPS: - *type = V4L2_CTRL_TYPE_HEVC_PPS; - break; - case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: - *type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS; - break; - case V4L2_CID_UNIT_CELL_SIZE: - *type = V4L2_CTRL_TYPE_AREA; - *flags |= V4L2_CTRL_FLAG_READ_ONLY; - break; - case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO: - *type = V4L2_CTRL_TYPE_HDR10_CLL_INFO; - break; - case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: - *type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY; - break; - default: - *type = V4L2_CTRL_TYPE_INTEGER; - break; - } - switch (id) { - case V4L2_CID_MPEG_AUDIO_ENCODING: - case V4L2_CID_MPEG_AUDIO_MODE: - case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: - case V4L2_CID_MPEG_VIDEO_B_FRAMES: - case V4L2_CID_MPEG_STREAM_TYPE: - *flags |= V4L2_CTRL_FLAG_UPDATE; - break; - case V4L2_CID_AUDIO_VOLUME: - case V4L2_CID_AUDIO_BALANCE: - case V4L2_CID_AUDIO_BASS: - case V4L2_CID_AUDIO_TREBLE: - case V4L2_CID_BRIGHTNESS: - case V4L2_CID_CONTRAST: - case V4L2_CID_SATURATION: - case V4L2_CID_HUE: - case V4L2_CID_RED_BALANCE: - case V4L2_CID_BLUE_BALANCE: - case V4L2_CID_GAMMA: - case V4L2_CID_SHARPNESS: - case V4L2_CID_CHROMA_GAIN: - case V4L2_CID_RDS_TX_DEVIATION: - case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: - case V4L2_CID_AUDIO_LIMITER_DEVIATION: - case V4L2_CID_AUDIO_COMPRESSION_GAIN: - case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: - case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: - case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: - case V4L2_CID_PILOT_TONE_DEVIATION: - case V4L2_CID_PILOT_TONE_FREQUENCY: - case V4L2_CID_TUNE_POWER_LEVEL: - case V4L2_CID_TUNE_ANTENNA_CAPACITOR: - case V4L2_CID_RF_TUNER_RF_GAIN: - case V4L2_CID_RF_TUNER_LNA_GAIN: - case V4L2_CID_RF_TUNER_MIXER_GAIN: - case V4L2_CID_RF_TUNER_IF_GAIN: - case V4L2_CID_RF_TUNER_BANDWIDTH: - case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: - *flags |= V4L2_CTRL_FLAG_SLIDER; - break; - case V4L2_CID_PAN_RELATIVE: - case V4L2_CID_TILT_RELATIVE: - case V4L2_CID_FOCUS_RELATIVE: - case V4L2_CID_IRIS_RELATIVE: - case V4L2_CID_ZOOM_RELATIVE: - *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | - V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; - break; - case V4L2_CID_FLASH_STROBE_STATUS: - case V4L2_CID_AUTO_FOCUS_STATUS: - case V4L2_CID_FLASH_READY: - case V4L2_CID_DV_TX_HOTPLUG: - case V4L2_CID_DV_TX_RXSENSE: - case V4L2_CID_DV_TX_EDID_PRESENT: - case V4L2_CID_DV_RX_POWER_PRESENT: - case V4L2_CID_DV_RX_IT_CONTENT_TYPE: - case V4L2_CID_RDS_RX_PTY: - case V4L2_CID_RDS_RX_PS_NAME: - case V4L2_CID_RDS_RX_RADIO_TEXT: - case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: - case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: - case V4L2_CID_RDS_RX_MUSIC_SPEECH: - case V4L2_CID_CAMERA_ORIENTATION: - case V4L2_CID_CAMERA_SENSOR_ROTATION: - *flags |= V4L2_CTRL_FLAG_READ_ONLY; - break; - case V4L2_CID_RF_TUNER_PLL_LOCK: - *flags |= V4L2_CTRL_FLAG_VOLATILE; - break; - } -} -EXPORT_SYMBOL(v4l2_ctrl_fill); - -static u32 user_flags(const struct v4l2_ctrl *ctrl) -{ - u32 flags = ctrl->flags; - - if (ctrl->is_ptr) - flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD; - - return flags; -} - -static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes) -{ - memset(ev, 0, sizeof(*ev)); - ev->type = V4L2_EVENT_CTRL; - ev->id = ctrl->id; - ev->u.ctrl.changes = changes; - ev->u.ctrl.type = ctrl->type; - ev->u.ctrl.flags = user_flags(ctrl); - if (ctrl->is_ptr) - ev->u.ctrl.value64 = 0; - else - ev->u.ctrl.value64 = *ctrl->p_cur.p_s64; - ev->u.ctrl.minimum = ctrl->minimum; - ev->u.ctrl.maximum = ctrl->maximum; - if (ctrl->type == V4L2_CTRL_TYPE_MENU - || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) - ev->u.ctrl.step = 1; - else - ev->u.ctrl.step = ctrl->step; - ev->u.ctrl.default_value = ctrl->default_value; -} - -static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes) -{ - struct v4l2_event ev; - struct v4l2_subscribed_event *sev; - - if (list_empty(&ctrl->ev_subs)) - return; - fill_event(&ev, ctrl, changes); - - list_for_each_entry(sev, &ctrl->ev_subs, node) - if (sev->fh != fh || - (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK)) - v4l2_event_queue_fh(sev->fh, &ev); -} - -static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx, - union v4l2_ctrl_ptr ptr1, - union v4l2_ctrl_ptr ptr2) -{ - switch (ctrl->type) { - case V4L2_CTRL_TYPE_BUTTON: - return false; - case V4L2_CTRL_TYPE_STRING: - idx *= ctrl->elem_size; - /* strings are always 0-terminated */ - return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx); - case V4L2_CTRL_TYPE_INTEGER64: - return ptr1.p_s64[idx] == ptr2.p_s64[idx]; - case V4L2_CTRL_TYPE_U8: - return ptr1.p_u8[idx] == ptr2.p_u8[idx]; - case V4L2_CTRL_TYPE_U16: - return ptr1.p_u16[idx] == ptr2.p_u16[idx]; - case V4L2_CTRL_TYPE_U32: - return ptr1.p_u32[idx] == ptr2.p_u32[idx]; - default: - if (ctrl->is_int) - return ptr1.p_s32[idx] == ptr2.p_s32[idx]; - idx *= ctrl->elem_size; - return !memcmp(ptr1.p_const + idx, ptr2.p_const + idx, - ctrl->elem_size); - } -} - -static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx, - union v4l2_ctrl_ptr ptr) -{ - struct v4l2_ctrl_mpeg2_sequence *p_mpeg2_sequence; - struct v4l2_ctrl_mpeg2_picture *p_mpeg2_picture; - struct v4l2_ctrl_mpeg2_quantisation *p_mpeg2_quant; - struct v4l2_ctrl_vp8_frame *p_vp8_frame; - struct v4l2_ctrl_fwht_params *p_fwht_params; - void *p = ptr.p + idx * ctrl->elem_size; - - if (ctrl->p_def.p_const) - memcpy(p, ctrl->p_def.p_const, ctrl->elem_size); - else - memset(p, 0, ctrl->elem_size); - - switch ((u32)ctrl->type) { - case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: - p_mpeg2_sequence = p; - - /* 4:2:0 */ - p_mpeg2_sequence->chroma_format = 1; - break; - case V4L2_CTRL_TYPE_MPEG2_PICTURE: - p_mpeg2_picture = p; - - /* interlaced top field */ - p_mpeg2_picture->picture_structure = V4L2_MPEG2_PIC_TOP_FIELD; - p_mpeg2_picture->picture_coding_type = - V4L2_MPEG2_PIC_CODING_TYPE_I; - break; - case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: - p_mpeg2_quant = p; - - memcpy(p_mpeg2_quant->intra_quantiser_matrix, - mpeg2_intra_quant_matrix, - ARRAY_SIZE(mpeg2_intra_quant_matrix)); - /* - * The default non-intra MPEG-2 quantisation - * coefficients are all 16, as per the specification. - */ - memset(p_mpeg2_quant->non_intra_quantiser_matrix, 16, - sizeof(p_mpeg2_quant->non_intra_quantiser_matrix)); - break; - case V4L2_CTRL_TYPE_VP8_FRAME: - p_vp8_frame = p; - p_vp8_frame->num_dct_parts = 1; - break; - case V4L2_CTRL_TYPE_FWHT_PARAMS: - p_fwht_params = p; - p_fwht_params->version = V4L2_FWHT_VERSION; - p_fwht_params->width = 1280; - p_fwht_params->height = 720; - p_fwht_params->flags = V4L2_FWHT_FL_PIXENC_YUV | - (2 << V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); - break; - } -} - -static void std_init(const struct v4l2_ctrl *ctrl, u32 idx, - union v4l2_ctrl_ptr ptr) -{ - switch (ctrl->type) { - case V4L2_CTRL_TYPE_STRING: - idx *= ctrl->elem_size; - memset(ptr.p_char + idx, ' ', ctrl->minimum); - ptr.p_char[idx + ctrl->minimum] = '\0'; - break; - case V4L2_CTRL_TYPE_INTEGER64: - ptr.p_s64[idx] = ctrl->default_value; - break; - case V4L2_CTRL_TYPE_INTEGER: - case V4L2_CTRL_TYPE_INTEGER_MENU: - case V4L2_CTRL_TYPE_MENU: - case V4L2_CTRL_TYPE_BITMASK: - case V4L2_CTRL_TYPE_BOOLEAN: - ptr.p_s32[idx] = ctrl->default_value; - break; - case V4L2_CTRL_TYPE_BUTTON: - case V4L2_CTRL_TYPE_CTRL_CLASS: - ptr.p_s32[idx] = 0; - break; - case V4L2_CTRL_TYPE_U8: - ptr.p_u8[idx] = ctrl->default_value; - break; - case V4L2_CTRL_TYPE_U16: - ptr.p_u16[idx] = ctrl->default_value; - break; - case V4L2_CTRL_TYPE_U32: - ptr.p_u32[idx] = ctrl->default_value; - break; - default: - std_init_compound(ctrl, idx, ptr); - break; - } -} - -static void std_log(const struct v4l2_ctrl *ctrl) -{ - union v4l2_ctrl_ptr ptr = ctrl->p_cur; - - if (ctrl->is_array) { - unsigned i; - - for (i = 0; i < ctrl->nr_of_dims; i++) - pr_cont("[%u]", ctrl->dims[i]); - pr_cont(" "); - } - - switch (ctrl->type) { - case V4L2_CTRL_TYPE_INTEGER: - pr_cont("%d", *ptr.p_s32); - break; - case V4L2_CTRL_TYPE_BOOLEAN: - pr_cont("%s", *ptr.p_s32 ? "true" : "false"); - break; - case V4L2_CTRL_TYPE_MENU: - pr_cont("%s", ctrl->qmenu[*ptr.p_s32]); - break; - case V4L2_CTRL_TYPE_INTEGER_MENU: - pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]); - break; - case V4L2_CTRL_TYPE_BITMASK: - pr_cont("0x%08x", *ptr.p_s32); - break; - case V4L2_CTRL_TYPE_INTEGER64: - pr_cont("%lld", *ptr.p_s64); - break; - case V4L2_CTRL_TYPE_STRING: - pr_cont("%s", ptr.p_char); - break; - case V4L2_CTRL_TYPE_U8: - pr_cont("%u", (unsigned)*ptr.p_u8); - break; - case V4L2_CTRL_TYPE_U16: - pr_cont("%u", (unsigned)*ptr.p_u16); - break; - case V4L2_CTRL_TYPE_U32: - pr_cont("%u", (unsigned)*ptr.p_u32); - break; - case V4L2_CTRL_TYPE_H264_SPS: - pr_cont("H264_SPS"); - break; - case V4L2_CTRL_TYPE_H264_PPS: - pr_cont("H264_PPS"); - break; - case V4L2_CTRL_TYPE_H264_SCALING_MATRIX: - pr_cont("H264_SCALING_MATRIX"); - break; - case V4L2_CTRL_TYPE_H264_SLICE_PARAMS: - pr_cont("H264_SLICE_PARAMS"); - break; - case V4L2_CTRL_TYPE_H264_DECODE_PARAMS: - pr_cont("H264_DECODE_PARAMS"); - break; - case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS: - pr_cont("H264_PRED_WEIGHTS"); - break; - case V4L2_CTRL_TYPE_FWHT_PARAMS: - pr_cont("FWHT_PARAMS"); - break; - case V4L2_CTRL_TYPE_VP8_FRAME: - pr_cont("VP8_FRAME"); - break; - case V4L2_CTRL_TYPE_HDR10_CLL_INFO: - pr_cont("HDR10_CLL_INFO"); - break; - case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY: - pr_cont("HDR10_MASTERING_DISPLAY"); - break; - case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: - pr_cont("MPEG2_QUANTISATION"); - break; - case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: - pr_cont("MPEG2_SEQUENCE"); - break; - case V4L2_CTRL_TYPE_MPEG2_PICTURE: - pr_cont("MPEG2_PICTURE"); - break; - default: - pr_cont("unknown type %d", ctrl->type); - break; - } -} - -/* - * Round towards the closest legal value. Be careful when we are - * close to the maximum range of the control type to prevent - * wrap-arounds. - */ -#define ROUND_TO_RANGE(val, offset_type, ctrl) \ -({ \ - offset_type offset; \ - if ((ctrl)->maximum >= 0 && \ - val >= (ctrl)->maximum - (s32)((ctrl)->step / 2)) \ - val = (ctrl)->maximum; \ - else \ - val += (s32)((ctrl)->step / 2); \ - val = clamp_t(typeof(val), val, \ - (ctrl)->minimum, (ctrl)->maximum); \ - offset = (val) - (ctrl)->minimum; \ - offset = (ctrl)->step * (offset / (u32)(ctrl)->step); \ - val = (ctrl)->minimum + offset; \ - 0; \ -}) - -/* Validate a new control */ - -#define zero_padding(s) \ - memset(&(s).padding, 0, sizeof((s).padding)) -#define zero_reserved(s) \ - memset(&(s).reserved, 0, sizeof((s).reserved)) - -/* - * Compound controls validation requires setting unused fields/flags to zero - * in order to properly detect unchanged controls with std_equal's memcmp. - */ -static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx, - union v4l2_ctrl_ptr ptr) -{ - struct v4l2_ctrl_mpeg2_sequence *p_mpeg2_sequence; - struct v4l2_ctrl_mpeg2_picture *p_mpeg2_picture; - struct v4l2_ctrl_vp8_frame *p_vp8_frame; - struct v4l2_ctrl_fwht_params *p_fwht_params; - struct v4l2_ctrl_h264_sps *p_h264_sps; - struct v4l2_ctrl_h264_pps *p_h264_pps; - struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights; - struct v4l2_ctrl_h264_slice_params *p_h264_slice_params; - struct v4l2_ctrl_h264_decode_params *p_h264_dec_params; - struct v4l2_ctrl_hevc_sps *p_hevc_sps; - struct v4l2_ctrl_hevc_pps *p_hevc_pps; - struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params; - struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering; - struct v4l2_area *area; - void *p = ptr.p + idx * ctrl->elem_size; - unsigned int i; - - switch ((u32)ctrl->type) { - case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: - p_mpeg2_sequence = p; - - switch (p_mpeg2_sequence->chroma_format) { - case 1: /* 4:2:0 */ - case 2: /* 4:2:2 */ - case 3: /* 4:4:4 */ - break; - default: - return -EINVAL; - } - break; - - case V4L2_CTRL_TYPE_MPEG2_PICTURE: - p_mpeg2_picture = p; - - switch (p_mpeg2_picture->intra_dc_precision) { - case 0: /* 8 bits */ - case 1: /* 9 bits */ - case 2: /* 10 bits */ - case 3: /* 11 bits */ - break; - default: - return -EINVAL; - } - - switch (p_mpeg2_picture->picture_structure) { - case V4L2_MPEG2_PIC_TOP_FIELD: - case V4L2_MPEG2_PIC_BOTTOM_FIELD: - case V4L2_MPEG2_PIC_FRAME: - break; - default: - return -EINVAL; - } - - switch (p_mpeg2_picture->picture_coding_type) { - case V4L2_MPEG2_PIC_CODING_TYPE_I: - case V4L2_MPEG2_PIC_CODING_TYPE_P: - case V4L2_MPEG2_PIC_CODING_TYPE_B: - break; - default: - return -EINVAL; - } - zero_reserved(*p_mpeg2_picture); - break; - - case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: - break; - - case V4L2_CTRL_TYPE_FWHT_PARAMS: - p_fwht_params = p; - if (p_fwht_params->version < V4L2_FWHT_VERSION) - return -EINVAL; - if (!p_fwht_params->width || !p_fwht_params->height) - return -EINVAL; - break; - - case V4L2_CTRL_TYPE_H264_SPS: - p_h264_sps = p; - - /* Some syntax elements are only conditionally valid */ - if (p_h264_sps->pic_order_cnt_type != 0) { - p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0; - } else if (p_h264_sps->pic_order_cnt_type != 1) { - p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0; - p_h264_sps->offset_for_non_ref_pic = 0; - p_h264_sps->offset_for_top_to_bottom_field = 0; - memset(&p_h264_sps->offset_for_ref_frame, 0, - sizeof(p_h264_sps->offset_for_ref_frame)); - } - - if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) { - p_h264_sps->chroma_format_idc = 1; - p_h264_sps->bit_depth_luma_minus8 = 0; - p_h264_sps->bit_depth_chroma_minus8 = 0; - - p_h264_sps->flags &= - ~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS; - - if (p_h264_sps->chroma_format_idc < 3) - p_h264_sps->flags &= - ~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE; - } - - if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY) - p_h264_sps->flags &= - ~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD; - - /* - * Chroma 4:2:2 format require at least High 4:2:2 profile. - * - * The H264 specification and well-known parser implementations - * use profile-idc values directly, as that is clearer and - * less ambiguous. We do the same here. - */ - if (p_h264_sps->profile_idc < 122 && - p_h264_sps->chroma_format_idc > 1) - return -EINVAL; - /* Chroma 4:4:4 format require at least High 4:2:2 profile */ - if (p_h264_sps->profile_idc < 244 && - p_h264_sps->chroma_format_idc > 2) - return -EINVAL; - if (p_h264_sps->chroma_format_idc > 3) - return -EINVAL; - - if (p_h264_sps->bit_depth_luma_minus8 > 6) - return -EINVAL; - if (p_h264_sps->bit_depth_chroma_minus8 > 6) - return -EINVAL; - if (p_h264_sps->log2_max_frame_num_minus4 > 12) - return -EINVAL; - if (p_h264_sps->pic_order_cnt_type > 2) - return -EINVAL; - if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12) - return -EINVAL; - if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN) - return -EINVAL; - break; - - case V4L2_CTRL_TYPE_H264_PPS: - p_h264_pps = p; - - if (p_h264_pps->num_slice_groups_minus1 > 7) - return -EINVAL; - if (p_h264_pps->num_ref_idx_l0_default_active_minus1 > - (V4L2_H264_REF_LIST_LEN - 1)) - return -EINVAL; - if (p_h264_pps->num_ref_idx_l1_default_active_minus1 > - (V4L2_H264_REF_LIST_LEN - 1)) - return -EINVAL; - if (p_h264_pps->weighted_bipred_idc > 2) - return -EINVAL; - /* - * pic_init_qp_minus26 shall be in the range of - * -(26 + QpBdOffset_y) to +25, inclusive, - * where QpBdOffset_y is 6 * bit_depth_luma_minus8 - */ - if (p_h264_pps->pic_init_qp_minus26 < -62 || - p_h264_pps->pic_init_qp_minus26 > 25) - return -EINVAL; - if (p_h264_pps->pic_init_qs_minus26 < -26 || - p_h264_pps->pic_init_qs_minus26 > 25) - return -EINVAL; - if (p_h264_pps->chroma_qp_index_offset < -12 || - p_h264_pps->chroma_qp_index_offset > 12) - return -EINVAL; - if (p_h264_pps->second_chroma_qp_index_offset < -12 || - p_h264_pps->second_chroma_qp_index_offset > 12) - return -EINVAL; - break; - - case V4L2_CTRL_TYPE_H264_SCALING_MATRIX: - break; - - case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS: - p_h264_pred_weights = p; - - if (p_h264_pred_weights->luma_log2_weight_denom > 7) - return -EINVAL; - if (p_h264_pred_weights->chroma_log2_weight_denom > 7) - return -EINVAL; - break; - - case V4L2_CTRL_TYPE_H264_SLICE_PARAMS: - p_h264_slice_params = p; - - if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B) - p_h264_slice_params->flags &= - ~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED; - - if (p_h264_slice_params->colour_plane_id > 2) - return -EINVAL; - if (p_h264_slice_params->cabac_init_idc > 2) - return -EINVAL; - if (p_h264_slice_params->disable_deblocking_filter_idc > 2) - return -EINVAL; - if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 || - p_h264_slice_params->slice_alpha_c0_offset_div2 > 6) - return -EINVAL; - if (p_h264_slice_params->slice_beta_offset_div2 < -6 || - p_h264_slice_params->slice_beta_offset_div2 > 6) - return -EINVAL; - - if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I || - p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI) - p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0; - if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B) - p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0; - - if (p_h264_slice_params->num_ref_idx_l0_active_minus1 > - (V4L2_H264_REF_LIST_LEN - 1)) - return -EINVAL; - if (p_h264_slice_params->num_ref_idx_l1_active_minus1 > - (V4L2_H264_REF_LIST_LEN - 1)) - return -EINVAL; - zero_reserved(*p_h264_slice_params); - break; - - case V4L2_CTRL_TYPE_H264_DECODE_PARAMS: - p_h264_dec_params = p; - - if (p_h264_dec_params->nal_ref_idc > 3) - return -EINVAL; - for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) { - struct v4l2_h264_dpb_entry *dpb_entry = - &p_h264_dec_params->dpb[i]; - - zero_reserved(*dpb_entry); - } - zero_reserved(*p_h264_dec_params); - break; - - case V4L2_CTRL_TYPE_VP8_FRAME: - p_vp8_frame = p; - - switch (p_vp8_frame->num_dct_parts) { - case 1: - case 2: - case 4: - case 8: - break; - default: - return -EINVAL; - } - zero_padding(p_vp8_frame->segment); - zero_padding(p_vp8_frame->lf); - zero_padding(p_vp8_frame->quant); - zero_padding(p_vp8_frame->entropy); - zero_padding(p_vp8_frame->coder_state); - break; - - case V4L2_CTRL_TYPE_HEVC_SPS: - p_hevc_sps = p; - - if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) { - p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0; - p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0; - p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0; - p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0; - } - - if (!(p_hevc_sps->flags & - V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT)) - p_hevc_sps->num_long_term_ref_pics_sps = 0; - break; - - case V4L2_CTRL_TYPE_HEVC_PPS: - p_hevc_pps = p; - - if (!(p_hevc_pps->flags & - V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED)) - p_hevc_pps->diff_cu_qp_delta_depth = 0; - - if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) { - p_hevc_pps->num_tile_columns_minus1 = 0; - p_hevc_pps->num_tile_rows_minus1 = 0; - memset(&p_hevc_pps->column_width_minus1, 0, - sizeof(p_hevc_pps->column_width_minus1)); - memset(&p_hevc_pps->row_height_minus1, 0, - sizeof(p_hevc_pps->row_height_minus1)); - - p_hevc_pps->flags &= - ~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED; - } - - if (p_hevc_pps->flags & - V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) { - p_hevc_pps->pps_beta_offset_div2 = 0; - p_hevc_pps->pps_tc_offset_div2 = 0; - } - - zero_padding(*p_hevc_pps); - break; - - case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS: - p_hevc_slice_params = p; - - if (p_hevc_slice_params->num_active_dpb_entries > - V4L2_HEVC_DPB_ENTRIES_NUM_MAX) - return -EINVAL; - - zero_padding(p_hevc_slice_params->pred_weight_table); - - for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries; - i++) { - struct v4l2_hevc_dpb_entry *dpb_entry = - &p_hevc_slice_params->dpb[i]; - - zero_padding(*dpb_entry); - } - - zero_padding(*p_hevc_slice_params); - break; - - case V4L2_CTRL_TYPE_HDR10_CLL_INFO: - break; - - case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY: - p_hdr10_mastering = p; - - for (i = 0; i < 3; ++i) { - if (p_hdr10_mastering->display_primaries_x[i] < - V4L2_HDR10_MASTERING_PRIMARIES_X_LOW || - p_hdr10_mastering->display_primaries_x[i] > - V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH || - p_hdr10_mastering->display_primaries_y[i] < - V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW || - p_hdr10_mastering->display_primaries_y[i] > - V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH) - return -EINVAL; - } - - if (p_hdr10_mastering->white_point_x < - V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW || - p_hdr10_mastering->white_point_x > - V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH || - p_hdr10_mastering->white_point_y < - V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW || - p_hdr10_mastering->white_point_y > - V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH) - return -EINVAL; - - if (p_hdr10_mastering->max_display_mastering_luminance < - V4L2_HDR10_MASTERING_MAX_LUMA_LOW || - p_hdr10_mastering->max_display_mastering_luminance > - V4L2_HDR10_MASTERING_MAX_LUMA_HIGH || - p_hdr10_mastering->min_display_mastering_luminance < - V4L2_HDR10_MASTERING_MIN_LUMA_LOW || - p_hdr10_mastering->min_display_mastering_luminance > - V4L2_HDR10_MASTERING_MIN_LUMA_HIGH) - return -EINVAL; - - /* The following restriction comes from ITU-T Rec. H.265 spec */ - if (p_hdr10_mastering->max_display_mastering_luminance == - V4L2_HDR10_MASTERING_MAX_LUMA_LOW && - p_hdr10_mastering->min_display_mastering_luminance == - V4L2_HDR10_MASTERING_MIN_LUMA_HIGH) - return -EINVAL; - - break; - - case V4L2_CTRL_TYPE_AREA: - area = p; - if (!area->width || !area->height) - return -EINVAL; - break; - - default: - return -EINVAL; - } - - return 0; -} - -static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx, - union v4l2_ctrl_ptr ptr) -{ - size_t len; - u64 offset; - s64 val; - - switch ((u32)ctrl->type) { - case V4L2_CTRL_TYPE_INTEGER: - return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl); - case V4L2_CTRL_TYPE_INTEGER64: - /* - * We can't use the ROUND_TO_RANGE define here due to - * the u64 divide that needs special care. - */ - val = ptr.p_s64[idx]; - if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2)) - val = ctrl->maximum; - else - val += (s64)(ctrl->step / 2); - val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum); - offset = val - ctrl->minimum; - do_div(offset, ctrl->step); - ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step; - return 0; - case V4L2_CTRL_TYPE_U8: - return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl); - case V4L2_CTRL_TYPE_U16: - return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl); - case V4L2_CTRL_TYPE_U32: - return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl); - - case V4L2_CTRL_TYPE_BOOLEAN: - ptr.p_s32[idx] = !!ptr.p_s32[idx]; - return 0; - - case V4L2_CTRL_TYPE_MENU: - case V4L2_CTRL_TYPE_INTEGER_MENU: - if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum) - return -ERANGE; - if (ptr.p_s32[idx] < BITS_PER_LONG_LONG && - (ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx]))) - return -EINVAL; - if (ctrl->type == V4L2_CTRL_TYPE_MENU && - ctrl->qmenu[ptr.p_s32[idx]][0] == '\0') - return -EINVAL; - return 0; - - case V4L2_CTRL_TYPE_BITMASK: - ptr.p_s32[idx] &= ctrl->maximum; - return 0; - - case V4L2_CTRL_TYPE_BUTTON: - case V4L2_CTRL_TYPE_CTRL_CLASS: - ptr.p_s32[idx] = 0; - return 0; - - case V4L2_CTRL_TYPE_STRING: - idx *= ctrl->elem_size; - len = strlen(ptr.p_char + idx); - if (len < ctrl->minimum) - return -ERANGE; - if ((len - (u32)ctrl->minimum) % (u32)ctrl->step) - return -ERANGE; - return 0; - - default: - return std_validate_compound(ctrl, idx, ptr); - } -} - -static const struct v4l2_ctrl_type_ops std_type_ops = { - .equal = std_equal, - .init = std_init, - .log = std_log, - .validate = std_validate, -}; - -/* Helper function: copy the given control value back to the caller */ -static int ptr_to_user(struct v4l2_ext_control *c, - struct v4l2_ctrl *ctrl, - union v4l2_ctrl_ptr ptr) -{ - u32 len; - - if (ctrl->is_ptr && !ctrl->is_string) - return copy_to_user(c->ptr, ptr.p_const, c->size) ? - -EFAULT : 0; - - switch (ctrl->type) { - case V4L2_CTRL_TYPE_STRING: - len = strlen(ptr.p_char); - if (c->size < len + 1) { - c->size = ctrl->elem_size; - return -ENOSPC; - } - return copy_to_user(c->string, ptr.p_char, len + 1) ? - -EFAULT : 0; - case V4L2_CTRL_TYPE_INTEGER64: - c->value64 = *ptr.p_s64; - break; - default: - c->value = *ptr.p_s32; - break; - } - return 0; -} - -/* Helper function: copy the current control value back to the caller */ -static int cur_to_user(struct v4l2_ext_control *c, - struct v4l2_ctrl *ctrl) -{ - return ptr_to_user(c, ctrl, ctrl->p_cur); -} - -/* Helper function: copy the new control value back to the caller */ -static int new_to_user(struct v4l2_ext_control *c, - struct v4l2_ctrl *ctrl) -{ - return ptr_to_user(c, ctrl, ctrl->p_new); -} - -/* Helper function: copy the request value back to the caller */ -static int req_to_user(struct v4l2_ext_control *c, - struct v4l2_ctrl_ref *ref) -{ - return ptr_to_user(c, ref->ctrl, ref->p_req); -} - -/* Helper function: copy the initial control value back to the caller */ -static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl) -{ - int idx; - - for (idx = 0; idx < ctrl->elems; idx++) - ctrl->type_ops->init(ctrl, idx, ctrl->p_new); - - return ptr_to_user(c, ctrl, ctrl->p_new); -} - -/* Helper function: copy the caller-provider value to the given control value */ -static int user_to_ptr(struct v4l2_ext_control *c, - struct v4l2_ctrl *ctrl, - union v4l2_ctrl_ptr ptr) -{ - int ret; - u32 size; - - ctrl->is_new = 1; - if (ctrl->is_ptr && !ctrl->is_string) { - unsigned idx; - - ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0; - if (ret || !ctrl->is_array) - return ret; - for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++) - ctrl->type_ops->init(ctrl, idx, ptr); - return 0; - } - - switch (ctrl->type) { - case V4L2_CTRL_TYPE_INTEGER64: - *ptr.p_s64 = c->value64; - break; - case V4L2_CTRL_TYPE_STRING: - size = c->size; - if (size == 0) - return -ERANGE; - if (size > ctrl->maximum + 1) - size = ctrl->maximum + 1; - ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0; - if (!ret) { - char last = ptr.p_char[size - 1]; - - ptr.p_char[size - 1] = 0; - /* If the string was longer than ctrl->maximum, - then return an error. */ - if (strlen(ptr.p_char) == ctrl->maximum && last) - return -ERANGE; - } - return ret; - default: - *ptr.p_s32 = c->value; - break; - } - return 0; -} - -/* Helper function: copy the caller-provider value as the new control value */ -static int user_to_new(struct v4l2_ext_control *c, - struct v4l2_ctrl *ctrl) -{ - return user_to_ptr(c, ctrl, ctrl->p_new); -} - -/* Copy the one value to another. */ -static void ptr_to_ptr(struct v4l2_ctrl *ctrl, - union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to) -{ - if (ctrl == NULL) - return; - memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size); -} - -/* Copy the new value to the current value. */ -static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) -{ - bool changed; - - if (ctrl == NULL) - return; - - /* has_changed is set by cluster_changed */ - changed = ctrl->has_changed; - if (changed) - ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur); - - if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) { - /* Note: CH_FLAGS is only set for auto clusters. */ - ctrl->flags &= - ~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE); - if (!is_cur_manual(ctrl->cluster[0])) { - ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; - if (ctrl->cluster[0]->has_volatiles) - ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; - } - fh = NULL; - } - if (changed || ch_flags) { - /* If a control was changed that was not one of the controls - modified by the application, then send the event to all. */ - if (!ctrl->is_new) - fh = NULL; - send_event(fh, ctrl, - (changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags); - if (ctrl->call_notify && changed && ctrl->handler->notify) - ctrl->handler->notify(ctrl, ctrl->handler->notify_priv); - } -} - -/* Copy the current value to the new value */ -static void cur_to_new(struct v4l2_ctrl *ctrl) -{ - if (ctrl == NULL) - return; - ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new); -} - -/* Copy the new value to the request value */ -static void new_to_req(struct v4l2_ctrl_ref *ref) -{ - if (!ref) - return; - ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req); - ref->valid_p_req = true; -} - -/* Copy the current value to the request value */ -static void cur_to_req(struct v4l2_ctrl_ref *ref) -{ - if (!ref) - return; - ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->p_req); - ref->valid_p_req = true; -} - -/* Copy the request value to the new value */ -static void req_to_new(struct v4l2_ctrl_ref *ref) -{ - if (!ref) - return; - if (ref->valid_p_req) - ptr_to_ptr(ref->ctrl, ref->p_req, ref->ctrl->p_new); - else - ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new); -} - -/* Return non-zero if one or more of the controls in the cluster has a new - value that differs from the current value. */ -static int cluster_changed(struct v4l2_ctrl *master) -{ - bool changed = false; - unsigned idx; - int i; - - for (i = 0; i < master->ncontrols; i++) { - struct v4l2_ctrl *ctrl = master->cluster[i]; - bool ctrl_changed = false; - - if (ctrl == NULL) - continue; - - if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE) - changed = ctrl_changed = true; - - /* - * Set has_changed to false to avoid generating - * the event V4L2_EVENT_CTRL_CH_VALUE - */ - if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { - ctrl->has_changed = false; - continue; - } - - for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) - ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, - ctrl->p_cur, ctrl->p_new); - ctrl->has_changed = ctrl_changed; - changed |= ctrl->has_changed; - } - return changed; -} - -/* Control range checking */ -static int check_range(enum v4l2_ctrl_type type, - s64 min, s64 max, u64 step, s64 def) -{ - switch (type) { - case V4L2_CTRL_TYPE_BOOLEAN: - if (step != 1 || max > 1 || min < 0) - return -ERANGE; - fallthrough; - case V4L2_CTRL_TYPE_U8: - case V4L2_CTRL_TYPE_U16: - case V4L2_CTRL_TYPE_U32: - case V4L2_CTRL_TYPE_INTEGER: - case V4L2_CTRL_TYPE_INTEGER64: - if (step == 0 || min > max || def < min || def > max) - return -ERANGE; - return 0; - case V4L2_CTRL_TYPE_BITMASK: - if (step || min || !max || (def & ~max)) - return -ERANGE; - return 0; - case V4L2_CTRL_TYPE_MENU: - case V4L2_CTRL_TYPE_INTEGER_MENU: - if (min > max || def < min || def > max) - return -ERANGE; - /* Note: step == menu_skip_mask for menu controls. - So here we check if the default value is masked out. */ - if (step && ((1 << def) & step)) - return -EINVAL; - return 0; - case V4L2_CTRL_TYPE_STRING: - if (min > max || min < 0 || step < 1 || def) - return -ERANGE; - return 0; - default: - return 0; - } -} - -/* Validate a new control */ -static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new) -{ - unsigned idx; - int err = 0; - - for (idx = 0; !err && idx < ctrl->elems; idx++) - err = ctrl->type_ops->validate(ctrl, idx, p_new); - return err; -} - -static inline u32 node2id(struct list_head *node) -{ - return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id; -} - -/* Set the handler's error code if it wasn't set earlier already */ -static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err) -{ - if (hdl->error == 0) - hdl->error = err; - return err; -} - -/* Initialize the handler */ -int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl, - unsigned nr_of_controls_hint, - struct lock_class_key *key, const char *name) -{ - mutex_init(&hdl->_lock); - hdl->lock = &hdl->_lock; - lockdep_set_class_and_name(hdl->lock, key, name); - INIT_LIST_HEAD(&hdl->ctrls); - INIT_LIST_HEAD(&hdl->ctrl_refs); - INIT_LIST_HEAD(&hdl->requests); - INIT_LIST_HEAD(&hdl->requests_queued); - hdl->request_is_queued = false; - hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8; - hdl->buckets = kvmalloc_array(hdl->nr_of_buckets, - sizeof(hdl->buckets[0]), - GFP_KERNEL | __GFP_ZERO); - hdl->error = hdl->buckets ? 0 : -ENOMEM; - media_request_object_init(&hdl->req_obj); - return hdl->error; -} -EXPORT_SYMBOL(v4l2_ctrl_handler_init_class); - -/* Free all controls and control refs */ -void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl) -{ - struct v4l2_ctrl_ref *ref, *next_ref; - struct v4l2_ctrl *ctrl, *next_ctrl; - struct v4l2_subscribed_event *sev, *next_sev; - - if (hdl == NULL || hdl->buckets == NULL) - return; - - /* - * If the main handler is freed and it is used by handler objects in - * outstanding requests, then unbind and put those objects before - * freeing the main handler. - * - * The main handler can be identified by having a NULL ops pointer in - * the request object. - */ - if (!hdl->req_obj.ops && !list_empty(&hdl->requests)) { - struct v4l2_ctrl_handler *req, *next_req; - - list_for_each_entry_safe(req, next_req, &hdl->requests, requests) { - media_request_object_unbind(&req->req_obj); - media_request_object_put(&req->req_obj); - } - } - mutex_lock(hdl->lock); - /* Free all nodes */ - list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) { - list_del(&ref->node); - kfree(ref); - } - /* Free all controls owned by the handler */ - list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) { - list_del(&ctrl->node); - list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node) - list_del(&sev->node); - kvfree(ctrl); - } - kvfree(hdl->buckets); - hdl->buckets = NULL; - hdl->cached = NULL; - hdl->error = 0; - mutex_unlock(hdl->lock); - mutex_destroy(&hdl->_lock); -} -EXPORT_SYMBOL(v4l2_ctrl_handler_free); - -/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer - be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing - with applications that do not use the NEXT_CTRL flag. - - We just find the n-th private user control. It's O(N), but that should not - be an issue in this particular case. */ -static struct v4l2_ctrl_ref *find_private_ref( - struct v4l2_ctrl_handler *hdl, u32 id) -{ - struct v4l2_ctrl_ref *ref; - - id -= V4L2_CID_PRIVATE_BASE; - list_for_each_entry(ref, &hdl->ctrl_refs, node) { - /* Search for private user controls that are compatible with - VIDIOC_G/S_CTRL. */ - if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER && - V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) { - if (!ref->ctrl->is_int) - continue; - if (id == 0) - return ref; - id--; - } - } - return NULL; -} - -/* Find a control with the given ID. */ -static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id) -{ - struct v4l2_ctrl_ref *ref; - int bucket; - - id &= V4L2_CTRL_ID_MASK; - - /* Old-style private controls need special handling */ - if (id >= V4L2_CID_PRIVATE_BASE) - return find_private_ref(hdl, id); - bucket = id % hdl->nr_of_buckets; - - /* Simple optimization: cache the last control found */ - if (hdl->cached && hdl->cached->ctrl->id == id) - return hdl->cached; - - /* Not in cache, search the hash */ - ref = hdl->buckets ? hdl->buckets[bucket] : NULL; - while (ref && ref->ctrl->id != id) - ref = ref->next; - - if (ref) - hdl->cached = ref; /* cache it! */ - return ref; -} - -/* Find a control with the given ID. Take the handler's lock first. */ -static struct v4l2_ctrl_ref *find_ref_lock( - struct v4l2_ctrl_handler *hdl, u32 id) -{ - struct v4l2_ctrl_ref *ref = NULL; - - if (hdl) { - mutex_lock(hdl->lock); - ref = find_ref(hdl, id); - mutex_unlock(hdl->lock); - } - return ref; -} - -/* Find a control with the given ID. */ -struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id) -{ - struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id); - - return ref ? ref->ctrl : NULL; -} -EXPORT_SYMBOL(v4l2_ctrl_find); - -/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */ -static int handler_new_ref(struct v4l2_ctrl_handler *hdl, - struct v4l2_ctrl *ctrl, - struct v4l2_ctrl_ref **ctrl_ref, - bool from_other_dev, bool allocate_req) -{ - struct v4l2_ctrl_ref *ref; - struct v4l2_ctrl_ref *new_ref; - u32 id = ctrl->id; - u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1; - int bucket = id % hdl->nr_of_buckets; /* which bucket to use */ - unsigned int size_extra_req = 0; - - if (ctrl_ref) - *ctrl_ref = NULL; - - /* - * Automatically add the control class if it is not yet present and - * the new control is not a compound control. - */ - if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES && - id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL) - if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0)) - return hdl->error; - - if (hdl->error) - return hdl->error; - - if (allocate_req) - size_extra_req = ctrl->elems * ctrl->elem_size; - new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL); - if (!new_ref) - return handler_set_err(hdl, -ENOMEM); - new_ref->ctrl = ctrl; - new_ref->from_other_dev = from_other_dev; - if (size_extra_req) - new_ref->p_req.p = &new_ref[1]; - - INIT_LIST_HEAD(&new_ref->node); - - mutex_lock(hdl->lock); - - /* Add immediately at the end of the list if the list is empty, or if - the last element in the list has a lower ID. - This ensures that when elements are added in ascending order the - insertion is an O(1) operation. */ - if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) { - list_add_tail(&new_ref->node, &hdl->ctrl_refs); - goto insert_in_hash; - } - - /* Find insert position in sorted list */ - list_for_each_entry(ref, &hdl->ctrl_refs, node) { - if (ref->ctrl->id < id) - continue; - /* Don't add duplicates */ - if (ref->ctrl->id == id) { - kfree(new_ref); - goto unlock; - } - list_add(&new_ref->node, ref->node.prev); - break; - } - -insert_in_hash: - /* Insert the control node in the hash */ - new_ref->next = hdl->buckets[bucket]; - hdl->buckets[bucket] = new_ref; - if (ctrl_ref) - *ctrl_ref = new_ref; - if (ctrl->handler == hdl) { - /* By default each control starts in a cluster of its own. - * new_ref->ctrl is basically a cluster array with one - * element, so that's perfect to use as the cluster pointer. - * But only do this for the handler that owns the control. - */ - ctrl->cluster = &new_ref->ctrl; - ctrl->ncontrols = 1; - } - -unlock: - mutex_unlock(hdl->lock); - return 0; -} - -/* Add a new control */ -static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ops, - const struct v4l2_ctrl_type_ops *type_ops, - u32 id, const char *name, enum v4l2_ctrl_type type, - s64 min, s64 max, u64 step, s64 def, - const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size, - u32 flags, const char * const *qmenu, - const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def, - void *priv) -{ - struct v4l2_ctrl *ctrl; - unsigned sz_extra; - unsigned nr_of_dims = 0; - unsigned elems = 1; - bool is_array; - unsigned tot_ctrl_size; - unsigned idx; - void *data; - int err; - - if (hdl->error) - return NULL; - - while (dims && dims[nr_of_dims]) { - elems *= dims[nr_of_dims]; - nr_of_dims++; - if (nr_of_dims == V4L2_CTRL_MAX_DIMS) - break; - } - is_array = nr_of_dims > 0; - - /* Prefill elem_size for all types handled by std_type_ops */ - switch ((u32)type) { - case V4L2_CTRL_TYPE_INTEGER64: - elem_size = sizeof(s64); - break; - case V4L2_CTRL_TYPE_STRING: - elem_size = max + 1; - break; - case V4L2_CTRL_TYPE_U8: - elem_size = sizeof(u8); - break; - case V4L2_CTRL_TYPE_U16: - elem_size = sizeof(u16); - break; - case V4L2_CTRL_TYPE_U32: - elem_size = sizeof(u32); - break; - case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: - elem_size = sizeof(struct v4l2_ctrl_mpeg2_sequence); - break; - case V4L2_CTRL_TYPE_MPEG2_PICTURE: - elem_size = sizeof(struct v4l2_ctrl_mpeg2_picture); - break; - case V4L2_CTRL_TYPE_MPEG2_QUANTISATION: - elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantisation); - break; - case V4L2_CTRL_TYPE_FWHT_PARAMS: - elem_size = sizeof(struct v4l2_ctrl_fwht_params); - break; - case V4L2_CTRL_TYPE_H264_SPS: - elem_size = sizeof(struct v4l2_ctrl_h264_sps); - break; - case V4L2_CTRL_TYPE_H264_PPS: - elem_size = sizeof(struct v4l2_ctrl_h264_pps); - break; - case V4L2_CTRL_TYPE_H264_SCALING_MATRIX: - elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix); - break; - case V4L2_CTRL_TYPE_H264_SLICE_PARAMS: - elem_size = sizeof(struct v4l2_ctrl_h264_slice_params); - break; - case V4L2_CTRL_TYPE_H264_DECODE_PARAMS: - elem_size = sizeof(struct v4l2_ctrl_h264_decode_params); - break; - case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS: - elem_size = sizeof(struct v4l2_ctrl_h264_pred_weights); - break; - case V4L2_CTRL_TYPE_VP8_FRAME: - elem_size = sizeof(struct v4l2_ctrl_vp8_frame); - break; - case V4L2_CTRL_TYPE_HEVC_SPS: - elem_size = sizeof(struct v4l2_ctrl_hevc_sps); - break; - case V4L2_CTRL_TYPE_HEVC_PPS: - elem_size = sizeof(struct v4l2_ctrl_hevc_pps); - break; - case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS: - elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params); - break; - case V4L2_CTRL_TYPE_HDR10_CLL_INFO: - elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info); - break; - case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY: - elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display); - break; - case V4L2_CTRL_TYPE_AREA: - elem_size = sizeof(struct v4l2_area); - break; - default: - if (type < V4L2_CTRL_COMPOUND_TYPES) - elem_size = sizeof(s32); - break; - } - tot_ctrl_size = elem_size * elems; - - /* Sanity checks */ - if (id == 0 || name == NULL || !elem_size || - id >= V4L2_CID_PRIVATE_BASE || - (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) || - (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) { - handler_set_err(hdl, -ERANGE); - return NULL; - } - err = check_range(type, min, max, step, def); - if (err) { - handler_set_err(hdl, err); - return NULL; - } - if (is_array && - (type == V4L2_CTRL_TYPE_BUTTON || - type == V4L2_CTRL_TYPE_CTRL_CLASS)) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - - sz_extra = 0; - if (type == V4L2_CTRL_TYPE_BUTTON) - flags |= V4L2_CTRL_FLAG_WRITE_ONLY | - V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; - else if (type == V4L2_CTRL_TYPE_CTRL_CLASS) - flags |= V4L2_CTRL_FLAG_READ_ONLY; - else if (type == V4L2_CTRL_TYPE_INTEGER64 || - type == V4L2_CTRL_TYPE_STRING || - type >= V4L2_CTRL_COMPOUND_TYPES || - is_array) - sz_extra += 2 * tot_ctrl_size; - - if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) - sz_extra += elem_size; - - ctrl = kvzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL); - if (ctrl == NULL) { - handler_set_err(hdl, -ENOMEM); - return NULL; - } - - INIT_LIST_HEAD(&ctrl->node); - INIT_LIST_HEAD(&ctrl->ev_subs); - ctrl->handler = hdl; - ctrl->ops = ops; - ctrl->type_ops = type_ops ? type_ops : &std_type_ops; - ctrl->id = id; - ctrl->name = name; - ctrl->type = type; - ctrl->flags = flags; - ctrl->minimum = min; - ctrl->maximum = max; - ctrl->step = step; - ctrl->default_value = def; - ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING; - ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string; - ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64; - ctrl->is_array = is_array; - ctrl->elems = elems; - ctrl->nr_of_dims = nr_of_dims; - if (nr_of_dims) - memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0])); - ctrl->elem_size = elem_size; - if (type == V4L2_CTRL_TYPE_MENU) - ctrl->qmenu = qmenu; - else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) - ctrl->qmenu_int = qmenu_int; - ctrl->priv = priv; - ctrl->cur.val = ctrl->val = def; - data = &ctrl[1]; - - if (!ctrl->is_int) { - ctrl->p_new.p = data; - ctrl->p_cur.p = data + tot_ctrl_size; - } else { - ctrl->p_new.p = &ctrl->val; - ctrl->p_cur.p = &ctrl->cur.val; - } - - if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) { - ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size; - memcpy(ctrl->p_def.p, p_def.p_const, elem_size); - } - - for (idx = 0; idx < elems; idx++) { - ctrl->type_ops->init(ctrl, idx, ctrl->p_cur); - ctrl->type_ops->init(ctrl, idx, ctrl->p_new); - } - - if (handler_new_ref(hdl, ctrl, NULL, false, false)) { - kvfree(ctrl); - return NULL; - } - mutex_lock(hdl->lock); - list_add_tail(&ctrl->node, &hdl->ctrls); - mutex_unlock(hdl->lock); - return ctrl; -} - -struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_config *cfg, void *priv) -{ - bool is_menu; - struct v4l2_ctrl *ctrl; - const char *name = cfg->name; - const char * const *qmenu = cfg->qmenu; - const s64 *qmenu_int = cfg->qmenu_int; - enum v4l2_ctrl_type type = cfg->type; - u32 flags = cfg->flags; - s64 min = cfg->min; - s64 max = cfg->max; - u64 step = cfg->step; - s64 def = cfg->def; - - if (name == NULL) - v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step, - &def, &flags); - - is_menu = (type == V4L2_CTRL_TYPE_MENU || - type == V4L2_CTRL_TYPE_INTEGER_MENU); - if (is_menu) - WARN_ON(step); - else - WARN_ON(cfg->menu_skip_mask); - if (type == V4L2_CTRL_TYPE_MENU && !qmenu) { - qmenu = v4l2_ctrl_get_menu(cfg->id); - } else if (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - - ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name, - type, min, max, - is_menu ? cfg->menu_skip_mask : step, def, - cfg->dims, cfg->elem_size, - flags, qmenu, qmenu_int, cfg->p_def, priv); - if (ctrl) - ctrl->is_private = cfg->is_private; - return ctrl; -} -EXPORT_SYMBOL(v4l2_ctrl_new_custom); - -/* Helper function for standard non-menu controls */ -struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ops, - u32 id, s64 min, s64 max, u64 step, s64 def) -{ - const char *name; - enum v4l2_ctrl_type type; - u32 flags; - - v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); - if (type == V4L2_CTRL_TYPE_MENU || - type == V4L2_CTRL_TYPE_INTEGER_MENU || - type >= V4L2_CTRL_COMPOUND_TYPES) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - min, max, step, def, NULL, 0, - flags, NULL, NULL, ptr_null, NULL); -} -EXPORT_SYMBOL(v4l2_ctrl_new_std); - -/* Helper function for standard menu controls */ -struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ops, - u32 id, u8 _max, u64 mask, u8 _def) -{ - const char * const *qmenu = NULL; - const s64 *qmenu_int = NULL; - unsigned int qmenu_int_len = 0; - const char *name; - enum v4l2_ctrl_type type; - s64 min; - s64 max = _max; - s64 def = _def; - u64 step; - u32 flags; - - v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); - - if (type == V4L2_CTRL_TYPE_MENU) - qmenu = v4l2_ctrl_get_menu(id); - else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) - qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len); - - if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - 0, max, mask, def, NULL, 0, - flags, qmenu, qmenu_int, ptr_null, NULL); -} -EXPORT_SYMBOL(v4l2_ctrl_new_std_menu); - -/* Helper function for standard menu controls with driver defined menu */ -struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ops, u32 id, u8 _max, - u64 mask, u8 _def, const char * const *qmenu) -{ - enum v4l2_ctrl_type type; - const char *name; - u32 flags; - u64 step; - s64 min; - s64 max = _max; - s64 def = _def; - - /* v4l2_ctrl_new_std_menu_items() should only be called for - * standard controls without a standard menu. - */ - if (v4l2_ctrl_get_menu(id)) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - - v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); - if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - 0, max, mask, def, NULL, 0, - flags, qmenu, NULL, ptr_null, NULL); - -} -EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items); - -/* Helper function for standard compound controls */ -struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ops, u32 id, - const union v4l2_ctrl_ptr p_def) -{ - const char *name; - enum v4l2_ctrl_type type; - u32 flags; - s64 min, max, step, def; - - v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); - if (type < V4L2_CTRL_COMPOUND_TYPES) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - min, max, step, def, NULL, 0, - flags, NULL, NULL, p_def, NULL); -} -EXPORT_SYMBOL(v4l2_ctrl_new_std_compound); - -/* Helper function for standard integer menu controls */ -struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ops, - u32 id, u8 _max, u8 _def, const s64 *qmenu_int) -{ - const char *name; - enum v4l2_ctrl_type type; - s64 min; - u64 step; - s64 max = _max; - s64 def = _def; - u32 flags; - - v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); - if (type != V4L2_CTRL_TYPE_INTEGER_MENU) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - 0, max, 0, def, NULL, 0, - flags, NULL, qmenu_int, ptr_null, NULL); -} -EXPORT_SYMBOL(v4l2_ctrl_new_int_menu); - -/* Add the controls from another handler to our own. */ -int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, - struct v4l2_ctrl_handler *add, - bool (*filter)(const struct v4l2_ctrl *ctrl), - bool from_other_dev) -{ - struct v4l2_ctrl_ref *ref; - int ret = 0; - - /* Do nothing if either handler is NULL or if they are the same */ - if (!hdl || !add || hdl == add) - return 0; - if (hdl->error) - return hdl->error; - mutex_lock(add->lock); - list_for_each_entry(ref, &add->ctrl_refs, node) { - struct v4l2_ctrl *ctrl = ref->ctrl; - - /* Skip handler-private controls. */ - if (ctrl->is_private) - continue; - /* And control classes */ - if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) - continue; - /* Filter any unwanted controls */ - if (filter && !filter(ctrl)) - continue; - ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false); - if (ret) - break; - } - mutex_unlock(add->lock); - return ret; -} -EXPORT_SYMBOL(v4l2_ctrl_add_handler); - -bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl) -{ - if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX) - return true; - if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX) - return true; - switch (ctrl->id) { - case V4L2_CID_AUDIO_MUTE: - case V4L2_CID_AUDIO_VOLUME: - case V4L2_CID_AUDIO_BALANCE: - case V4L2_CID_AUDIO_BASS: - case V4L2_CID_AUDIO_TREBLE: - case V4L2_CID_AUDIO_LOUDNESS: - return true; - default: - break; - } - return false; -} -EXPORT_SYMBOL(v4l2_ctrl_radio_filter); - -/* Cluster controls */ -void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls) -{ - bool has_volatiles = false; - int i; - - /* The first control is the master control and it must not be NULL */ - if (WARN_ON(ncontrols == 0 || controls[0] == NULL)) - return; - - for (i = 0; i < ncontrols; i++) { - if (controls[i]) { - controls[i]->cluster = controls; - controls[i]->ncontrols = ncontrols; - if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE) - has_volatiles = true; - } - } - controls[0]->has_volatiles = has_volatiles; -} -EXPORT_SYMBOL(v4l2_ctrl_cluster); - -void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls, - u8 manual_val, bool set_volatile) -{ - struct v4l2_ctrl *master = controls[0]; - u32 flag = 0; - int i; - - v4l2_ctrl_cluster(ncontrols, controls); - WARN_ON(ncontrols <= 1); - WARN_ON(manual_val < master->minimum || manual_val > master->maximum); - WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl)); - master->is_auto = true; - master->has_volatiles = set_volatile; - master->manual_mode_value = manual_val; - master->flags |= V4L2_CTRL_FLAG_UPDATE; - - if (!is_cur_manual(master)) - flag = V4L2_CTRL_FLAG_INACTIVE | - (set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0); - - for (i = 1; i < ncontrols; i++) - if (controls[i]) - controls[i]->flags |= flag; -} -EXPORT_SYMBOL(v4l2_ctrl_auto_cluster); - -/* Activate/deactivate a control. */ -void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active) -{ - /* invert since the actual flag is called 'inactive' */ - bool inactive = !active; - bool old; - - if (ctrl == NULL) - return; - - if (inactive) - /* set V4L2_CTRL_FLAG_INACTIVE */ - old = test_and_set_bit(4, &ctrl->flags); - else - /* clear V4L2_CTRL_FLAG_INACTIVE */ - old = test_and_clear_bit(4, &ctrl->flags); - if (old != inactive) - send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); -} -EXPORT_SYMBOL(v4l2_ctrl_activate); - -void __v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed) -{ - bool old; - - if (ctrl == NULL) - return; - - lockdep_assert_held(ctrl->handler->lock); - - if (grabbed) - /* set V4L2_CTRL_FLAG_GRABBED */ - old = test_and_set_bit(1, &ctrl->flags); - else - /* clear V4L2_CTRL_FLAG_GRABBED */ - old = test_and_clear_bit(1, &ctrl->flags); - if (old != grabbed) - send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); -} -EXPORT_SYMBOL(__v4l2_ctrl_grab); - -/* Log the control name and value */ -static void log_ctrl(const struct v4l2_ctrl *ctrl, - const char *prefix, const char *colon) -{ - if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY)) - return; - if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) - return; - - pr_info("%s%s%s: ", prefix, colon, ctrl->name); - - ctrl->type_ops->log(ctrl); - - if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE | - V4L2_CTRL_FLAG_GRABBED | - V4L2_CTRL_FLAG_VOLATILE)) { - if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) - pr_cont(" inactive"); - if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED) - pr_cont(" grabbed"); - if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) - pr_cont(" volatile"); - } - pr_cont("\n"); -} - -/* Log all controls owned by the handler */ -void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl, - const char *prefix) -{ - struct v4l2_ctrl *ctrl; - const char *colon = ""; - int len; - - if (hdl == NULL) - return; - if (prefix == NULL) - prefix = ""; - len = strlen(prefix); - if (len && prefix[len - 1] != ' ') - colon = ": "; - mutex_lock(hdl->lock); - list_for_each_entry(ctrl, &hdl->ctrls, node) - if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED)) - log_ctrl(ctrl, prefix, colon); - mutex_unlock(hdl->lock); -} -EXPORT_SYMBOL(v4l2_ctrl_handler_log_status); - -int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd) -{ - v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); - return 0; -} -EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status); - -/* Call s_ctrl for all controls owned by the handler */ -int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl) -{ - struct v4l2_ctrl *ctrl; - int ret = 0; - - if (hdl == NULL) - return 0; - - lockdep_assert_held(hdl->lock); - - list_for_each_entry(ctrl, &hdl->ctrls, node) - ctrl->done = false; - - list_for_each_entry(ctrl, &hdl->ctrls, node) { - struct v4l2_ctrl *master = ctrl->cluster[0]; - int i; - - /* Skip if this control was already handled by a cluster. */ - /* Skip button controls and read-only controls. */ - if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON || - (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)) - continue; - - for (i = 0; i < master->ncontrols; i++) { - if (master->cluster[i]) { - cur_to_new(master->cluster[i]); - master->cluster[i]->is_new = 1; - master->cluster[i]->done = true; - } - } - ret = call_op(master, s_ctrl); - if (ret) - break; - } - - return ret; -} -EXPORT_SYMBOL_GPL(__v4l2_ctrl_handler_setup); - -int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl) -{ - int ret; - - if (hdl == NULL) - return 0; - - mutex_lock(hdl->lock); - ret = __v4l2_ctrl_handler_setup(hdl); - mutex_unlock(hdl->lock); - - return ret; -} -EXPORT_SYMBOL(v4l2_ctrl_handler_setup); - -/* Implement VIDIOC_QUERY_EXT_CTRL */ -int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc) -{ - const unsigned next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND; - u32 id = qc->id & V4L2_CTRL_ID_MASK; - struct v4l2_ctrl_ref *ref; - struct v4l2_ctrl *ctrl; - - if (hdl == NULL) - return -EINVAL; - - mutex_lock(hdl->lock); - - /* Try to find it */ - ref = find_ref(hdl, id); - - if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) { - bool is_compound; - /* Match any control that is not hidden */ - unsigned mask = 1; - bool match = false; - - if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) { - /* Match any hidden control */ - match = true; - } else if ((qc->id & next_flags) == next_flags) { - /* Match any control, compound or not */ - mask = 0; - } - - /* Find the next control with ID > qc->id */ - - /* Did we reach the end of the control list? */ - if (id >= node2id(hdl->ctrl_refs.prev)) { - ref = NULL; /* Yes, so there is no next control */ - } else if (ref) { - /* We found a control with the given ID, so just get - the next valid one in the list. */ - list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) { - is_compound = ref->ctrl->is_array || - ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES; - if (id < ref->ctrl->id && - (is_compound & mask) == match) - break; - } - if (&ref->node == &hdl->ctrl_refs) - ref = NULL; - } else { - /* No control with the given ID exists, so start - searching for the next largest ID. We know there - is one, otherwise the first 'if' above would have - been true. */ - list_for_each_entry(ref, &hdl->ctrl_refs, node) { - is_compound = ref->ctrl->is_array || - ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES; - if (id < ref->ctrl->id && - (is_compound & mask) == match) - break; - } - if (&ref->node == &hdl->ctrl_refs) - ref = NULL; - } - } - mutex_unlock(hdl->lock); - - if (!ref) - return -EINVAL; - - ctrl = ref->ctrl; - memset(qc, 0, sizeof(*qc)); - if (id >= V4L2_CID_PRIVATE_BASE) - qc->id = id; - else - qc->id = ctrl->id; - strscpy(qc->name, ctrl->name, sizeof(qc->name)); - qc->flags = user_flags(ctrl); - qc->type = ctrl->type; - qc->elem_size = ctrl->elem_size; - qc->elems = ctrl->elems; - qc->nr_of_dims = ctrl->nr_of_dims; - memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0])); - qc->minimum = ctrl->minimum; - qc->maximum = ctrl->maximum; - qc->default_value = ctrl->default_value; - if (ctrl->type == V4L2_CTRL_TYPE_MENU - || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) - qc->step = 1; - else - qc->step = ctrl->step; - return 0; -} -EXPORT_SYMBOL(v4l2_query_ext_ctrl); - -/* Implement VIDIOC_QUERYCTRL */ -int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc) -{ - struct v4l2_query_ext_ctrl qec = { qc->id }; - int rc; - - rc = v4l2_query_ext_ctrl(hdl, &qec); - if (rc) - return rc; - - qc->id = qec.id; - qc->type = qec.type; - qc->flags = qec.flags; - strscpy(qc->name, qec.name, sizeof(qc->name)); - switch (qc->type) { - case V4L2_CTRL_TYPE_INTEGER: - case V4L2_CTRL_TYPE_BOOLEAN: - case V4L2_CTRL_TYPE_MENU: - case V4L2_CTRL_TYPE_INTEGER_MENU: - case V4L2_CTRL_TYPE_STRING: - case V4L2_CTRL_TYPE_BITMASK: - qc->minimum = qec.minimum; - qc->maximum = qec.maximum; - qc->step = qec.step; - qc->default_value = qec.default_value; - break; - default: - qc->minimum = 0; - qc->maximum = 0; - qc->step = 0; - qc->default_value = 0; - break; - } - return 0; -} -EXPORT_SYMBOL(v4l2_queryctrl); - -/* Implement VIDIOC_QUERYMENU */ -int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm) -{ - struct v4l2_ctrl *ctrl; - u32 i = qm->index; - - ctrl = v4l2_ctrl_find(hdl, qm->id); - if (!ctrl) - return -EINVAL; - - qm->reserved = 0; - /* Sanity checks */ - switch (ctrl->type) { - case V4L2_CTRL_TYPE_MENU: - if (ctrl->qmenu == NULL) - return -EINVAL; - break; - case V4L2_CTRL_TYPE_INTEGER_MENU: - if (ctrl->qmenu_int == NULL) - return -EINVAL; - break; - default: - return -EINVAL; - } - - if (i < ctrl->minimum || i > ctrl->maximum) - return -EINVAL; - - /* Use mask to see if this menu item should be skipped */ - if (ctrl->menu_skip_mask & (1ULL << i)) - return -EINVAL; - /* Empty menu items should also be skipped */ - if (ctrl->type == V4L2_CTRL_TYPE_MENU) { - if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0') - return -EINVAL; - strscpy(qm->name, ctrl->qmenu[i], sizeof(qm->name)); - } else { - qm->value = ctrl->qmenu_int[i]; - } - return 0; -} -EXPORT_SYMBOL(v4l2_querymenu); - -static int v4l2_ctrl_request_clone(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_handler *from) -{ - struct v4l2_ctrl_ref *ref; - int err = 0; - - if (WARN_ON(!hdl || hdl == from)) - return -EINVAL; - - if (hdl->error) - return hdl->error; - - WARN_ON(hdl->lock != &hdl->_lock); - - mutex_lock(from->lock); - list_for_each_entry(ref, &from->ctrl_refs, node) { - struct v4l2_ctrl *ctrl = ref->ctrl; - struct v4l2_ctrl_ref *new_ref; - - /* Skip refs inherited from other devices */ - if (ref->from_other_dev) - continue; - err = handler_new_ref(hdl, ctrl, &new_ref, false, true); - if (err) - break; - } - mutex_unlock(from->lock); - return err; -} - -static void v4l2_ctrl_request_queue(struct media_request_object *obj) -{ - struct v4l2_ctrl_handler *hdl = - container_of(obj, struct v4l2_ctrl_handler, req_obj); - struct v4l2_ctrl_handler *main_hdl = obj->priv; - - mutex_lock(main_hdl->lock); - list_add_tail(&hdl->requests_queued, &main_hdl->requests_queued); - hdl->request_is_queued = true; - mutex_unlock(main_hdl->lock); -} - -static void v4l2_ctrl_request_unbind(struct media_request_object *obj) -{ - struct v4l2_ctrl_handler *hdl = - container_of(obj, struct v4l2_ctrl_handler, req_obj); - struct v4l2_ctrl_handler *main_hdl = obj->priv; - - mutex_lock(main_hdl->lock); - list_del_init(&hdl->requests); - if (hdl->request_is_queued) { - list_del_init(&hdl->requests_queued); - hdl->request_is_queued = false; - } - mutex_unlock(main_hdl->lock); -} - -static void v4l2_ctrl_request_release(struct media_request_object *obj) -{ - struct v4l2_ctrl_handler *hdl = - container_of(obj, struct v4l2_ctrl_handler, req_obj); - - v4l2_ctrl_handler_free(hdl); - kfree(hdl); -} - -static const struct media_request_object_ops req_ops = { - .queue = v4l2_ctrl_request_queue, - .unbind = v4l2_ctrl_request_unbind, - .release = v4l2_ctrl_request_release, -}; - -struct v4l2_ctrl_handler *v4l2_ctrl_request_hdl_find(struct media_request *req, - struct v4l2_ctrl_handler *parent) -{ - struct media_request_object *obj; - - if (WARN_ON(req->state != MEDIA_REQUEST_STATE_VALIDATING && - req->state != MEDIA_REQUEST_STATE_QUEUED)) - return NULL; - - obj = media_request_object_find(req, &req_ops, parent); - if (obj) - return container_of(obj, struct v4l2_ctrl_handler, req_obj); - return NULL; -} -EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_find); - -struct v4l2_ctrl * -v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id) -{ - struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id); - - return (ref && ref->valid_p_req) ? ref->ctrl : NULL; -} -EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find); - -static int v4l2_ctrl_request_bind(struct media_request *req, - struct v4l2_ctrl_handler *hdl, - struct v4l2_ctrl_handler *from) -{ - int ret; - - ret = v4l2_ctrl_request_clone(hdl, from); - - if (!ret) { - ret = media_request_object_bind(req, &req_ops, - from, false, &hdl->req_obj); - if (!ret) { - mutex_lock(from->lock); - list_add_tail(&hdl->requests, &from->requests); - mutex_unlock(from->lock); - } - } - return ret; -} - -/* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS: - - It is not a fully atomic operation, just best-effort only. After all, if - multiple controls have to be set through multiple i2c writes (for example) - then some initial writes may succeed while others fail. Thus leaving the - system in an inconsistent state. The question is how much effort you are - willing to spend on trying to make something atomic that really isn't. - - From the point of view of an application the main requirement is that - when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an - error should be returned without actually affecting any controls. - - If all the values are correct, then it is acceptable to just give up - in case of low-level errors. - - It is important though that the application can tell when only a partial - configuration was done. The way we do that is through the error_idx field - of struct v4l2_ext_controls: if that is equal to the count field then no - controls were affected. Otherwise all controls before that index were - successful in performing their 'get' or 'set' operation, the control at - the given index failed, and you don't know what happened with the controls - after the failed one. Since if they were part of a control cluster they - could have been successfully processed (if a cluster member was encountered - at index < error_idx), they could have failed (if a cluster member was at - error_idx), or they may not have been processed yet (if the first cluster - member appeared after error_idx). - - It is all fairly theoretical, though. In practice all you can do is to - bail out. If error_idx == count, then it is an application bug. If - error_idx < count then it is only an application bug if the error code was - EBUSY. That usually means that something started streaming just when you - tried to set the controls. In all other cases it is a driver/hardware - problem and all you can do is to retry or bail out. - - Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that - never modifies controls the error_idx is just set to whatever control - has an invalid value. - */ - -/* Prepare for the extended g/s/try functions. - Find the controls in the control array and do some basic checks. */ -static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl, - struct v4l2_ext_controls *cs, - struct v4l2_ctrl_helper *helpers, - struct video_device *vdev, - bool get) -{ - struct v4l2_ctrl_helper *h; - bool have_clusters = false; - u32 i; - - for (i = 0, h = helpers; i < cs->count; i++, h++) { - struct v4l2_ext_control *c = &cs->controls[i]; - struct v4l2_ctrl_ref *ref; - struct v4l2_ctrl *ctrl; - u32 id = c->id & V4L2_CTRL_ID_MASK; - - cs->error_idx = i; - - if (cs->which && - cs->which != V4L2_CTRL_WHICH_DEF_VAL && - cs->which != V4L2_CTRL_WHICH_REQUEST_VAL && - V4L2_CTRL_ID2WHICH(id) != cs->which) { - dprintk(vdev, - "invalid which 0x%x or control id 0x%x\n", - cs->which, id); - return -EINVAL; - } - - /* Old-style private controls are not allowed for - extended controls */ - if (id >= V4L2_CID_PRIVATE_BASE) { - dprintk(vdev, - "old-style private controls not allowed\n"); - return -EINVAL; - } - ref = find_ref_lock(hdl, id); - if (ref == NULL) { - dprintk(vdev, "cannot find control id 0x%x\n", id); - return -EINVAL; - } - h->ref = ref; - ctrl = ref->ctrl; - if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) { - dprintk(vdev, "control id 0x%x is disabled\n", id); - return -EINVAL; - } - - if (ctrl->cluster[0]->ncontrols > 1) - have_clusters = true; - if (ctrl->cluster[0] != ctrl) - ref = find_ref_lock(hdl, ctrl->cluster[0]->id); - if (ctrl->is_ptr && !ctrl->is_string) { - unsigned tot_size = ctrl->elems * ctrl->elem_size; - - if (c->size < tot_size) { - /* - * In the get case the application first - * queries to obtain the size of the control. - */ - if (get) { - c->size = tot_size; - return -ENOSPC; - } - dprintk(vdev, - "pointer control id 0x%x size too small, %d bytes but %d bytes needed\n", - id, c->size, tot_size); - return -EFAULT; - } - c->size = tot_size; - } - /* Store the ref to the master control of the cluster */ - h->mref = ref; - /* Initially set next to 0, meaning that there is no other - control in this helper array belonging to the same - cluster */ - h->next = 0; - } - - /* We are done if there were no controls that belong to a multi- - control cluster. */ - if (!have_clusters) - return 0; - - /* The code below figures out in O(n) time which controls in the list - belong to the same cluster. */ - - /* This has to be done with the handler lock taken. */ - mutex_lock(hdl->lock); - - /* First zero the helper field in the master control references */ - for (i = 0; i < cs->count; i++) - helpers[i].mref->helper = NULL; - for (i = 0, h = helpers; i < cs->count; i++, h++) { - struct v4l2_ctrl_ref *mref = h->mref; - - /* If the mref->helper is set, then it points to an earlier - helper that belongs to the same cluster. */ - if (mref->helper) { - /* Set the next field of mref->helper to the current - index: this means that that earlier helper now - points to the next helper in the same cluster. */ - mref->helper->next = i; - /* mref should be set only for the first helper in the - cluster, clear the others. */ - h->mref = NULL; - } - /* Point the mref helper to the current helper struct. */ - mref->helper = h; - } - mutex_unlock(hdl->lock); - return 0; -} - -/* Handles the corner case where cs->count == 0. It checks whether the - specified control class exists. If that class ID is 0, then it checks - whether there are any controls at all. */ -static int class_check(struct v4l2_ctrl_handler *hdl, u32 which) -{ - if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL || - which == V4L2_CTRL_WHICH_REQUEST_VAL) - return 0; - return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL; -} - -/* - * Get extended controls. Allocates the helpers array if needed. - * - * Note that v4l2_g_ext_ctrls_common() with 'which' set to - * V4L2_CTRL_WHICH_REQUEST_VAL is only called if the request was - * completed, and in that case valid_p_req is true for all controls. - */ -static int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl, - struct v4l2_ext_controls *cs, - struct video_device *vdev) -{ - struct v4l2_ctrl_helper helper[4]; - struct v4l2_ctrl_helper *helpers = helper; - int ret; - int i, j; - bool is_default, is_request; - - is_default = (cs->which == V4L2_CTRL_WHICH_DEF_VAL); - is_request = (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL); - - cs->error_idx = cs->count; - cs->which = V4L2_CTRL_ID2WHICH(cs->which); - - if (hdl == NULL) - return -EINVAL; - - if (cs->count == 0) - return class_check(hdl, cs->which); - - if (cs->count > ARRAY_SIZE(helper)) { - helpers = kvmalloc_array(cs->count, sizeof(helper[0]), - GFP_KERNEL); - if (helpers == NULL) - return -ENOMEM; - } - - ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, true); - cs->error_idx = cs->count; - - for (i = 0; !ret && i < cs->count; i++) - if (helpers[i].ref->ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) - ret = -EACCES; - - for (i = 0; !ret && i < cs->count; i++) { - struct v4l2_ctrl *master; - bool is_volatile = false; - u32 idx = i; - - if (helpers[i].mref == NULL) - continue; - - master = helpers[i].mref->ctrl; - cs->error_idx = i; - - v4l2_ctrl_lock(master); - - /* - * g_volatile_ctrl will update the new control values. - * This makes no sense for V4L2_CTRL_WHICH_DEF_VAL and - * V4L2_CTRL_WHICH_REQUEST_VAL. In the case of requests - * it is v4l2_ctrl_request_complete() that copies the - * volatile controls at the time of request completion - * to the request, so you don't want to do that again. - */ - if (!is_default && !is_request && - ((master->flags & V4L2_CTRL_FLAG_VOLATILE) || - (master->has_volatiles && !is_cur_manual(master)))) { - for (j = 0; j < master->ncontrols; j++) - cur_to_new(master->cluster[j]); - ret = call_op(master, g_volatile_ctrl); - is_volatile = true; - } - - if (ret) { - v4l2_ctrl_unlock(master); - break; - } - - /* - * Copy the default value (if is_default is true), the - * request value (if is_request is true and p_req is valid), - * the new volatile value (if is_volatile is true) or the - * current value. - */ - do { - struct v4l2_ctrl_ref *ref = helpers[idx].ref; - - if (is_default) - ret = def_to_user(cs->controls + idx, ref->ctrl); - else if (is_request && ref->valid_p_req) - ret = req_to_user(cs->controls + idx, ref); - else if (is_volatile) - ret = new_to_user(cs->controls + idx, ref->ctrl); - else - ret = cur_to_user(cs->controls + idx, ref->ctrl); - idx = helpers[idx].next; - } while (!ret && idx); - - v4l2_ctrl_unlock(master); - } - - if (cs->count > ARRAY_SIZE(helper)) - kvfree(helpers); - return ret; -} - -static struct media_request_object * -v4l2_ctrls_find_req_obj(struct v4l2_ctrl_handler *hdl, - struct media_request *req, bool set) -{ - struct media_request_object *obj; - struct v4l2_ctrl_handler *new_hdl; - int ret; - - if (IS_ERR(req)) - return ERR_CAST(req); - - if (set && WARN_ON(req->state != MEDIA_REQUEST_STATE_UPDATING)) - return ERR_PTR(-EBUSY); - - obj = media_request_object_find(req, &req_ops, hdl); - if (obj) - return obj; - /* - * If there are no controls in this completed request, - * then that can only happen if: - * - * 1) no controls were present in the queued request, and - * 2) v4l2_ctrl_request_complete() could not allocate a - * control handler object to store the completed state in. - * - * So return ENOMEM to indicate that there was an out-of-memory - * error. - */ - if (!set) - return ERR_PTR(-ENOMEM); - - new_hdl = kzalloc(sizeof(*new_hdl), GFP_KERNEL); - if (!new_hdl) - return ERR_PTR(-ENOMEM); - - obj = &new_hdl->req_obj; - ret = v4l2_ctrl_handler_init(new_hdl, (hdl->nr_of_buckets - 1) * 8); - if (!ret) - ret = v4l2_ctrl_request_bind(req, new_hdl, hdl); - if (ret) { - v4l2_ctrl_handler_free(new_hdl); - kfree(new_hdl); - return ERR_PTR(ret); - } - - media_request_object_get(obj); - return obj; -} - -int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev, - struct media_device *mdev, struct v4l2_ext_controls *cs) -{ - struct media_request_object *obj = NULL; - struct media_request *req = NULL; - int ret; - - if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) { - if (!mdev || cs->request_fd < 0) - return -EINVAL; - - req = media_request_get_by_fd(mdev, cs->request_fd); - if (IS_ERR(req)) - return PTR_ERR(req); - - if (req->state != MEDIA_REQUEST_STATE_COMPLETE) { - media_request_put(req); - return -EACCES; - } - - ret = media_request_lock_for_access(req); - if (ret) { - media_request_put(req); - return ret; - } - - obj = v4l2_ctrls_find_req_obj(hdl, req, false); - if (IS_ERR(obj)) { - media_request_unlock_for_access(req); - media_request_put(req); - return PTR_ERR(obj); - } - - hdl = container_of(obj, struct v4l2_ctrl_handler, - req_obj); - } - - ret = v4l2_g_ext_ctrls_common(hdl, cs, vdev); - - if (obj) { - media_request_unlock_for_access(req); - media_request_object_put(obj); - media_request_put(req); - } - return ret; -} -EXPORT_SYMBOL(v4l2_g_ext_ctrls); - -/* Helper function to get a single control */ -static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c) -{ - struct v4l2_ctrl *master = ctrl->cluster[0]; - int ret = 0; - int i; - - /* Compound controls are not supported. The new_to_user() and - * cur_to_user() calls below would need to be modified not to access - * userspace memory when called from get_ctrl(). - */ - if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64) - return -EINVAL; - - if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) - return -EACCES; - - v4l2_ctrl_lock(master); - /* g_volatile_ctrl will update the current control values */ - if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { - for (i = 0; i < master->ncontrols; i++) - cur_to_new(master->cluster[i]); - ret = call_op(master, g_volatile_ctrl); - new_to_user(c, ctrl); - } else { - cur_to_user(c, ctrl); - } - v4l2_ctrl_unlock(master); - return ret; -} - -int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control) -{ - struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); - struct v4l2_ext_control c; - int ret; - - if (ctrl == NULL || !ctrl->is_int) - return -EINVAL; - ret = get_ctrl(ctrl, &c); - control->value = c.value; - return ret; -} -EXPORT_SYMBOL(v4l2_g_ctrl); - -s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl) -{ - struct v4l2_ext_control c; - - /* It's a driver bug if this happens. */ - if (WARN_ON(!ctrl->is_int)) - return 0; - c.value = 0; - get_ctrl(ctrl, &c); - return c.value; -} -EXPORT_SYMBOL(v4l2_ctrl_g_ctrl); - -s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl) -{ - struct v4l2_ext_control c; - - /* It's a driver bug if this happens. */ - if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64)) - return 0; - c.value64 = 0; - get_ctrl(ctrl, &c); - return c.value64; -} -EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64); - - -/* Core function that calls try/s_ctrl and ensures that the new value is - copied to the current value on a set. - Must be called with ctrl->handler->lock held. */ -static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master, - bool set, u32 ch_flags) -{ - bool update_flag; - int ret; - int i; - - /* Go through the cluster and either validate the new value or - (if no new value was set), copy the current value to the new - value, ensuring a consistent view for the control ops when - called. */ - for (i = 0; i < master->ncontrols; i++) { - struct v4l2_ctrl *ctrl = master->cluster[i]; - - if (ctrl == NULL) - continue; - - if (!ctrl->is_new) { - cur_to_new(ctrl); - continue; - } - /* Check again: it may have changed since the - previous check in try_or_set_ext_ctrls(). */ - if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) - return -EBUSY; - } - - ret = call_op(master, try_ctrl); - - /* Don't set if there is no change */ - if (ret || !set || !cluster_changed(master)) - return ret; - ret = call_op(master, s_ctrl); - if (ret) - return ret; - - /* If OK, then make the new values permanent. */ - update_flag = is_cur_manual(master) != is_new_manual(master); - - for (i = 0; i < master->ncontrols; i++) { - /* - * If we switch from auto to manual mode, and this cluster - * contains volatile controls, then all non-master controls - * have to be marked as changed. The 'new' value contains - * the volatile value (obtained by update_from_auto_cluster), - * which now has to become the current value. - */ - if (i && update_flag && is_new_manual(master) && - master->has_volatiles && master->cluster[i]) - master->cluster[i]->has_changed = true; - - new_to_cur(fh, master->cluster[i], ch_flags | - ((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0)); - } - return 0; -} - -/* Validate controls. */ -static int validate_ctrls(struct v4l2_ext_controls *cs, - struct v4l2_ctrl_helper *helpers, - struct video_device *vdev, - bool set) -{ - unsigned i; - int ret = 0; - - cs->error_idx = cs->count; - for (i = 0; i < cs->count; i++) { - struct v4l2_ctrl *ctrl = helpers[i].ref->ctrl; - union v4l2_ctrl_ptr p_new; - - cs->error_idx = i; - - if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) { - dprintk(vdev, - "control id 0x%x is read-only\n", - ctrl->id); - return -EACCES; - } - /* This test is also done in try_set_control_cluster() which - is called in atomic context, so that has the final say, - but it makes sense to do an up-front check as well. Once - an error occurs in try_set_control_cluster() some other - controls may have been set already and we want to do a - best-effort to avoid that. */ - if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) { - dprintk(vdev, - "control id 0x%x is grabbed, cannot set\n", - ctrl->id); - return -EBUSY; - } - /* - * Skip validation for now if the payload needs to be copied - * from userspace into kernelspace. We'll validate those later. - */ - if (ctrl->is_ptr) - continue; - if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) - p_new.p_s64 = &cs->controls[i].value64; - else - p_new.p_s32 = &cs->controls[i].value; - ret = validate_new(ctrl, p_new); - if (ret) - return ret; - } - return 0; -} - -/* Obtain the current volatile values of an autocluster and mark them - as new. */ -static void update_from_auto_cluster(struct v4l2_ctrl *master) -{ - int i; - - for (i = 1; i < master->ncontrols; i++) - cur_to_new(master->cluster[i]); - if (!call_op(master, g_volatile_ctrl)) - for (i = 1; i < master->ncontrols; i++) - if (master->cluster[i]) - master->cluster[i]->is_new = 1; -} - -/* Try or try-and-set controls */ -static int try_set_ext_ctrls_common(struct v4l2_fh *fh, - struct v4l2_ctrl_handler *hdl, - struct v4l2_ext_controls *cs, - struct video_device *vdev, bool set) -{ - struct v4l2_ctrl_helper helper[4]; - struct v4l2_ctrl_helper *helpers = helper; - unsigned i, j; - int ret; - - cs->error_idx = cs->count; - - /* Default value cannot be changed */ - if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) { - dprintk(vdev, "%s: cannot change default value\n", - video_device_node_name(vdev)); - return -EINVAL; - } - - cs->which = V4L2_CTRL_ID2WHICH(cs->which); - - if (hdl == NULL) { - dprintk(vdev, "%s: invalid null control handler\n", - video_device_node_name(vdev)); - return -EINVAL; - } - - if (cs->count == 0) - return class_check(hdl, cs->which); - - if (cs->count > ARRAY_SIZE(helper)) { - helpers = kvmalloc_array(cs->count, sizeof(helper[0]), - GFP_KERNEL); - if (!helpers) - return -ENOMEM; - } - ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, false); - if (!ret) - ret = validate_ctrls(cs, helpers, vdev, set); - if (ret && set) - cs->error_idx = cs->count; - for (i = 0; !ret && i < cs->count; i++) { - struct v4l2_ctrl *master; - u32 idx = i; - - if (helpers[i].mref == NULL) - continue; - - cs->error_idx = i; - master = helpers[i].mref->ctrl; - v4l2_ctrl_lock(master); - - /* Reset the 'is_new' flags of the cluster */ - for (j = 0; j < master->ncontrols; j++) - if (master->cluster[j]) - master->cluster[j]->is_new = 0; - - /* For volatile autoclusters that are currently in auto mode - we need to discover if it will be set to manual mode. - If so, then we have to copy the current volatile values - first since those will become the new manual values (which - may be overwritten by explicit new values from this set - of controls). */ - if (master->is_auto && master->has_volatiles && - !is_cur_manual(master)) { - /* Pick an initial non-manual value */ - s32 new_auto_val = master->manual_mode_value + 1; - u32 tmp_idx = idx; - - do { - /* Check if the auto control is part of the - list, and remember the new value. */ - if (helpers[tmp_idx].ref->ctrl == master) - new_auto_val = cs->controls[tmp_idx].value; - tmp_idx = helpers[tmp_idx].next; - } while (tmp_idx); - /* If the new value == the manual value, then copy - the current volatile values. */ - if (new_auto_val == master->manual_mode_value) - update_from_auto_cluster(master); - } - - /* Copy the new caller-supplied control values. - user_to_new() sets 'is_new' to 1. */ - do { - struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl; - - ret = user_to_new(cs->controls + idx, ctrl); - if (!ret && ctrl->is_ptr) { - ret = validate_new(ctrl, ctrl->p_new); - if (ret) - dprintk(vdev, - "failed to validate control %s (%d)\n", - v4l2_ctrl_get_name(ctrl->id), ret); - } - idx = helpers[idx].next; - } while (!ret && idx); - - if (!ret) - ret = try_or_set_cluster(fh, master, - !hdl->req_obj.req && set, 0); - if (!ret && hdl->req_obj.req && set) { - for (j = 0; j < master->ncontrols; j++) { - struct v4l2_ctrl_ref *ref = - find_ref(hdl, master->cluster[j]->id); - - new_to_req(ref); - } - } - - /* Copy the new values back to userspace. */ - if (!ret) { - idx = i; - do { - ret = new_to_user(cs->controls + idx, - helpers[idx].ref->ctrl); - idx = helpers[idx].next; - } while (!ret && idx); - } - v4l2_ctrl_unlock(master); - } - - if (cs->count > ARRAY_SIZE(helper)) - kvfree(helpers); - return ret; -} - -static int try_set_ext_ctrls(struct v4l2_fh *fh, - struct v4l2_ctrl_handler *hdl, - struct video_device *vdev, - struct media_device *mdev, - struct v4l2_ext_controls *cs, bool set) -{ - struct media_request_object *obj = NULL; - struct media_request *req = NULL; - int ret; - - if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) { - if (!mdev) { - dprintk(vdev, "%s: missing media device\n", - video_device_node_name(vdev)); - return -EINVAL; - } - - if (cs->request_fd < 0) { - dprintk(vdev, "%s: invalid request fd %d\n", - video_device_node_name(vdev), cs->request_fd); - return -EINVAL; - } - - req = media_request_get_by_fd(mdev, cs->request_fd); - if (IS_ERR(req)) { - dprintk(vdev, "%s: cannot find request fd %d\n", - video_device_node_name(vdev), cs->request_fd); - return PTR_ERR(req); - } - - ret = media_request_lock_for_update(req); - if (ret) { - dprintk(vdev, "%s: cannot lock request fd %d\n", - video_device_node_name(vdev), cs->request_fd); - media_request_put(req); - return ret; - } - - obj = v4l2_ctrls_find_req_obj(hdl, req, set); - if (IS_ERR(obj)) { - dprintk(vdev, - "%s: cannot find request object for request fd %d\n", - video_device_node_name(vdev), - cs->request_fd); - media_request_unlock_for_update(req); - media_request_put(req); - return PTR_ERR(obj); - } - hdl = container_of(obj, struct v4l2_ctrl_handler, - req_obj); - } - - ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set); - if (ret) - dprintk(vdev, - "%s: try_set_ext_ctrls_common failed (%d)\n", - video_device_node_name(vdev), ret); - - if (obj) { - media_request_unlock_for_update(req); - media_request_object_put(obj); - media_request_put(req); - } - - return ret; -} - -int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl, - struct video_device *vdev, - struct media_device *mdev, - struct v4l2_ext_controls *cs) -{ - return try_set_ext_ctrls(NULL, hdl, vdev, mdev, cs, false); -} -EXPORT_SYMBOL(v4l2_try_ext_ctrls); - -int v4l2_s_ext_ctrls(struct v4l2_fh *fh, - struct v4l2_ctrl_handler *hdl, - struct video_device *vdev, - struct media_device *mdev, - struct v4l2_ext_controls *cs) -{ - return try_set_ext_ctrls(fh, hdl, vdev, mdev, cs, true); -} -EXPORT_SYMBOL(v4l2_s_ext_ctrls); - -/* Helper function for VIDIOC_S_CTRL compatibility */ -static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) -{ - struct v4l2_ctrl *master = ctrl->cluster[0]; - int ret; - int i; - - /* Reset the 'is_new' flags of the cluster */ - for (i = 0; i < master->ncontrols; i++) - if (master->cluster[i]) - master->cluster[i]->is_new = 0; - - ret = validate_new(ctrl, ctrl->p_new); - if (ret) - return ret; - - /* For autoclusters with volatiles that are switched from auto to - manual mode we have to update the current volatile values since - those will become the initial manual values after such a switch. */ - if (master->is_auto && master->has_volatiles && ctrl == master && - !is_cur_manual(master) && ctrl->val == master->manual_mode_value) - update_from_auto_cluster(master); - - ctrl->is_new = 1; - return try_or_set_cluster(fh, master, true, ch_flags); -} - -/* Helper function for VIDIOC_S_CTRL compatibility */ -static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, - struct v4l2_ext_control *c) -{ - int ret; - - v4l2_ctrl_lock(ctrl); - user_to_new(c, ctrl); - ret = set_ctrl(fh, ctrl, 0); - if (!ret) - cur_to_user(c, ctrl); - v4l2_ctrl_unlock(ctrl); - return ret; -} - -int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, - struct v4l2_control *control) -{ - struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); - struct v4l2_ext_control c = { control->id }; - int ret; - - if (ctrl == NULL || !ctrl->is_int) - return -EINVAL; - - if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) - return -EACCES; - - c.value = control->value; - ret = set_ctrl_lock(fh, ctrl, &c); - control->value = c.value; - return ret; -} -EXPORT_SYMBOL(v4l2_s_ctrl); - -int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) -{ - lockdep_assert_held(ctrl->handler->lock); - - /* It's a driver bug if this happens. */ - if (WARN_ON(!ctrl->is_int)) - return -EINVAL; - ctrl->val = val; - return set_ctrl(NULL, ctrl, 0); -} -EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl); - -int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) -{ - lockdep_assert_held(ctrl->handler->lock); - - /* It's a driver bug if this happens. */ - if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64)) - return -EINVAL; - *ctrl->p_new.p_s64 = val; - return set_ctrl(NULL, ctrl, 0); -} -EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64); - -int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s) -{ - lockdep_assert_held(ctrl->handler->lock); - - /* It's a driver bug if this happens. */ - if (WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING)) - return -EINVAL; - strscpy(ctrl->p_new.p_char, s, ctrl->maximum + 1); - return set_ctrl(NULL, ctrl, 0); -} -EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string); - -int __v4l2_ctrl_s_ctrl_compound(struct v4l2_ctrl *ctrl, - enum v4l2_ctrl_type type, const void *p) -{ - lockdep_assert_held(ctrl->handler->lock); - - /* It's a driver bug if this happens. */ - if (WARN_ON(ctrl->type != type)) - return -EINVAL; - memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size); - return set_ctrl(NULL, ctrl, 0); -} -EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_compound); - -void v4l2_ctrl_request_complete(struct media_request *req, - struct v4l2_ctrl_handler *main_hdl) -{ - struct media_request_object *obj; - struct v4l2_ctrl_handler *hdl; - struct v4l2_ctrl_ref *ref; - - if (!req || !main_hdl) - return; - - /* - * Note that it is valid if nothing was found. It means - * that this request doesn't have any controls and so just - * wants to leave the controls unchanged. - */ - obj = media_request_object_find(req, &req_ops, main_hdl); - if (!obj) { - int ret; - - /* Create a new request so the driver can return controls */ - hdl = kzalloc(sizeof(*hdl), GFP_KERNEL); - if (!hdl) - return; - - ret = v4l2_ctrl_handler_init(hdl, (main_hdl->nr_of_buckets - 1) * 8); - if (!ret) - ret = v4l2_ctrl_request_bind(req, hdl, main_hdl); - if (ret) { - v4l2_ctrl_handler_free(hdl); - kfree(hdl); - return; - } - hdl->request_is_queued = true; - obj = media_request_object_find(req, &req_ops, main_hdl); - } - hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj); - - list_for_each_entry(ref, &hdl->ctrl_refs, node) { - struct v4l2_ctrl *ctrl = ref->ctrl; - struct v4l2_ctrl *master = ctrl->cluster[0]; - unsigned int i; - - if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { - v4l2_ctrl_lock(master); - /* g_volatile_ctrl will update the current control values */ - for (i = 0; i < master->ncontrols; i++) - cur_to_new(master->cluster[i]); - call_op(master, g_volatile_ctrl); - new_to_req(ref); - v4l2_ctrl_unlock(master); - continue; - } - if (ref->valid_p_req) - continue; - - /* Copy the current control value into the request */ - v4l2_ctrl_lock(ctrl); - cur_to_req(ref); - v4l2_ctrl_unlock(ctrl); - } - - mutex_lock(main_hdl->lock); - WARN_ON(!hdl->request_is_queued); - list_del_init(&hdl->requests_queued); - hdl->request_is_queued = false; - mutex_unlock(main_hdl->lock); - media_request_object_complete(obj); - media_request_object_put(obj); -} -EXPORT_SYMBOL(v4l2_ctrl_request_complete); - -int v4l2_ctrl_request_setup(struct media_request *req, - struct v4l2_ctrl_handler *main_hdl) -{ - struct media_request_object *obj; - struct v4l2_ctrl_handler *hdl; - struct v4l2_ctrl_ref *ref; - int ret = 0; - - if (!req || !main_hdl) - return 0; - - if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED)) - return -EBUSY; - - /* - * Note that it is valid if nothing was found. It means - * that this request doesn't have any controls and so just - * wants to leave the controls unchanged. - */ - obj = media_request_object_find(req, &req_ops, main_hdl); - if (!obj) - return 0; - if (obj->completed) { - media_request_object_put(obj); - return -EBUSY; - } - hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj); - - list_for_each_entry(ref, &hdl->ctrl_refs, node) - ref->req_done = false; - - list_for_each_entry(ref, &hdl->ctrl_refs, node) { - struct v4l2_ctrl *ctrl = ref->ctrl; - struct v4l2_ctrl *master = ctrl->cluster[0]; - bool have_new_data = false; - int i; - - /* - * Skip if this control was already handled by a cluster. - * Skip button controls and read-only controls. - */ - if (ref->req_done || (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)) - continue; - - v4l2_ctrl_lock(master); - for (i = 0; i < master->ncontrols; i++) { - if (master->cluster[i]) { - struct v4l2_ctrl_ref *r = - find_ref(hdl, master->cluster[i]->id); - - if (r->valid_p_req) { - have_new_data = true; - break; - } - } - } - if (!have_new_data) { - v4l2_ctrl_unlock(master); - continue; - } - - for (i = 0; i < master->ncontrols; i++) { - if (master->cluster[i]) { - struct v4l2_ctrl_ref *r = - find_ref(hdl, master->cluster[i]->id); - - req_to_new(r); - master->cluster[i]->is_new = 1; - r->req_done = true; - } - } - /* - * For volatile autoclusters that are currently in auto mode - * we need to discover if it will be set to manual mode. - * If so, then we have to copy the current volatile values - * first since those will become the new manual values (which - * may be overwritten by explicit new values from this set - * of controls). - */ - if (master->is_auto && master->has_volatiles && - !is_cur_manual(master)) { - s32 new_auto_val = *master->p_new.p_s32; - - /* - * If the new value == the manual value, then copy - * the current volatile values. - */ - if (new_auto_val == master->manual_mode_value) - update_from_auto_cluster(master); - } - - ret = try_or_set_cluster(NULL, master, true, 0); - v4l2_ctrl_unlock(master); - - if (ret) - break; - } - - media_request_object_put(obj); - return ret; -} -EXPORT_SYMBOL(v4l2_ctrl_request_setup); - -void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv) -{ - if (ctrl == NULL) - return; - if (notify == NULL) { - ctrl->call_notify = 0; - return; - } - if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify)) - return; - ctrl->handler->notify = notify; - ctrl->handler->notify_priv = priv; - ctrl->call_notify = 1; -} -EXPORT_SYMBOL(v4l2_ctrl_notify); - -int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, - s64 min, s64 max, u64 step, s64 def) -{ - bool value_changed; - bool range_changed = false; - int ret; - - lockdep_assert_held(ctrl->handler->lock); - - switch (ctrl->type) { - case V4L2_CTRL_TYPE_INTEGER: - case V4L2_CTRL_TYPE_INTEGER64: - case V4L2_CTRL_TYPE_BOOLEAN: - case V4L2_CTRL_TYPE_MENU: - case V4L2_CTRL_TYPE_INTEGER_MENU: - case V4L2_CTRL_TYPE_BITMASK: - case V4L2_CTRL_TYPE_U8: - case V4L2_CTRL_TYPE_U16: - case V4L2_CTRL_TYPE_U32: - if (ctrl->is_array) - return -EINVAL; - ret = check_range(ctrl->type, min, max, step, def); - if (ret) - return ret; - break; - default: - return -EINVAL; - } - if ((ctrl->minimum != min) || (ctrl->maximum != max) || - (ctrl->step != step) || ctrl->default_value != def) { - range_changed = true; - ctrl->minimum = min; - ctrl->maximum = max; - ctrl->step = step; - ctrl->default_value = def; - } - cur_to_new(ctrl); - if (validate_new(ctrl, ctrl->p_new)) { - if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) - *ctrl->p_new.p_s64 = def; - else - *ctrl->p_new.p_s32 = def; - } - - if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) - value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64; - else - value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32; - if (value_changed) - ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); - else if (range_changed) - send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); - return ret; -} -EXPORT_SYMBOL(__v4l2_ctrl_modify_range); - -static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems) -{ - struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); - - if (ctrl == NULL) - return -EINVAL; - - v4l2_ctrl_lock(ctrl); - list_add_tail(&sev->node, &ctrl->ev_subs); - if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS && - (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) { - struct v4l2_event ev; - u32 changes = V4L2_EVENT_CTRL_CH_FLAGS; - - if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)) - changes |= V4L2_EVENT_CTRL_CH_VALUE; - fill_event(&ev, ctrl, changes); - /* Mark the queue as active, allowing this initial - event to be accepted. */ - sev->elems = elems; - v4l2_event_queue_fh(sev->fh, &ev); - } - v4l2_ctrl_unlock(ctrl); - return 0; -} - -static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev) -{ - struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); - - if (ctrl == NULL) - return; - - v4l2_ctrl_lock(ctrl); - list_del(&sev->node); - v4l2_ctrl_unlock(ctrl); -} - -void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new) -{ - u32 old_changes = old->u.ctrl.changes; - - old->u.ctrl = new->u.ctrl; - old->u.ctrl.changes |= old_changes; -} -EXPORT_SYMBOL(v4l2_ctrl_replace); - -void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new) -{ - new->u.ctrl.changes |= old->u.ctrl.changes; -} -EXPORT_SYMBOL(v4l2_ctrl_merge); - -const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = { - .add = v4l2_ctrl_add_event, - .del = v4l2_ctrl_del_event, - .replace = v4l2_ctrl_replace, - .merge = v4l2_ctrl_merge, -}; -EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops); - -int v4l2_ctrl_log_status(struct file *file, void *fh) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_fh *vfh = file->private_data; - - if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev) - v4l2_ctrl_handler_log_status(vfh->ctrl_handler, - vfd->v4l2_dev->name); - return 0; -} -EXPORT_SYMBOL(v4l2_ctrl_log_status); - -int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh, - const struct v4l2_event_subscription *sub) -{ - if (sub->type == V4L2_EVENT_CTRL) - return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops); - return -EINVAL; -} -EXPORT_SYMBOL(v4l2_ctrl_subscribe_event); - -int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, - struct v4l2_event_subscription *sub) -{ - if (!sd->ctrl_handler) - return -EINVAL; - return v4l2_ctrl_subscribe_event(fh, sub); -} -EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event); - -__poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait) -{ - struct v4l2_fh *fh = file->private_data; - - poll_wait(file, &fh->wait, wait); - if (v4l2_event_pending(fh)) - return EPOLLPRI; - return 0; -} -EXPORT_SYMBOL(v4l2_ctrl_poll); - -int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl, - const struct v4l2_ctrl_ops *ctrl_ops, - const struct v4l2_fwnode_device_properties *p) -{ - if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) { - u32 orientation_ctrl; - - switch (p->orientation) { - case V4L2_FWNODE_ORIENTATION_FRONT: - orientation_ctrl = V4L2_CAMERA_ORIENTATION_FRONT; - break; - case V4L2_FWNODE_ORIENTATION_BACK: - orientation_ctrl = V4L2_CAMERA_ORIENTATION_BACK; - break; - case V4L2_FWNODE_ORIENTATION_EXTERNAL: - orientation_ctrl = V4L2_CAMERA_ORIENTATION_EXTERNAL; - break; - default: - return -EINVAL; - } - if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops, - V4L2_CID_CAMERA_ORIENTATION, - V4L2_CAMERA_ORIENTATION_EXTERNAL, 0, - orientation_ctrl)) - return hdl->error; - } - - if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) { - if (!v4l2_ctrl_new_std(hdl, ctrl_ops, - V4L2_CID_CAMERA_SENSOR_ROTATION, - p->rotation, p->rotation, 1, - p->rotation)) - return hdl->error; - } - - return hdl->error; -} -EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties); -- 2.7.4