From eef55219925b75312642527f3e3e0ac65e49d46a Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 13 Mar 2014 08:44:09 -0300 Subject: [PATCH] upstream: [media] v4l: ti-vpe: Add selection API in VPE driver Add selection ioctl ops. For VPE, cropping makes sense only for the input to VPE(or V4L2_BUF_TYPE_VIDEO_OUTPUT/MPLANE buffers) and composing makes sense only for the output of VPE(or V4L2_BUF_TYPE_VIDEO_CAPTURE/MPLANE buffers). For the CAPTURE type, V4L2_SEL_TGT_COMPOSE results in VPE writing the output in a rectangle within the capture buffer. For the OUTPUT type, V4L2_SEL_TGT_CROP results in selecting a rectangle region within the source buffer. Setting the crop/compose rectangles should successfully result in re-configuration of registers which are affected when either source or destination dimensions change, set_srcdst_params() is called for this purpose. Signed-off-by: Archit Taneja Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/ti-vpe/vpe.c | 150 ++++++++++++++++++++++++++++++++++++ 1 file changed, 150 insertions(+) diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c index 1c9e57c..972f43f 100644 --- a/drivers/media/platform/ti-vpe/vpe.c +++ b/drivers/media/platform/ti-vpe/vpe.c @@ -410,8 +410,10 @@ static struct vpe_q_data *get_q_data(struct vpe_ctx *ctx, { switch (type) { case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + case V4L2_BUF_TYPE_VIDEO_OUTPUT: return &ctx->q_data[Q_DATA_SRC]; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + case V4L2_BUF_TYPE_VIDEO_CAPTURE: return &ctx->q_data[Q_DATA_DST]; default: BUG(); @@ -1591,6 +1593,151 @@ static int vpe_s_fmt(struct file *file, void *priv, struct v4l2_format *f) return set_srcdst_params(ctx); } +static int __vpe_try_selection(struct vpe_ctx *ctx, struct v4l2_selection *s) +{ + struct vpe_q_data *q_data; + + if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) && + (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)) + return -EINVAL; + + q_data = get_q_data(ctx, s->type); + if (!q_data) + return -EINVAL; + + switch (s->target) { + case V4L2_SEL_TGT_COMPOSE: + /* + * COMPOSE target is only valid for capture buffer type, return + * error for output buffer type + */ + if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + break; + case V4L2_SEL_TGT_CROP: + /* + * CROP target is only valid for output buffer type, return + * error for capture buffer type + */ + if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + break; + /* + * bound and default crop/compose targets are invalid targets to + * try/set + */ + default: + return -EINVAL; + } + + if (s->r.top < 0 || s->r.left < 0) { + vpe_err(ctx->dev, "negative values for top and left\n"); + s->r.top = s->r.left = 0; + } + + v4l_bound_align_image(&s->r.width, MIN_W, q_data->width, 1, + &s->r.height, MIN_H, q_data->height, H_ALIGN, S_ALIGN); + + /* adjust left/top if cropping rectangle is out of bounds */ + if (s->r.left + s->r.width > q_data->width) + s->r.left = q_data->width - s->r.width; + if (s->r.top + s->r.height > q_data->height) + s->r.top = q_data->height - s->r.height; + + return 0; +} + +static int vpe_g_selection(struct file *file, void *fh, + struct v4l2_selection *s) +{ + struct vpe_ctx *ctx = file2ctx(file); + struct vpe_q_data *q_data; + bool use_c_rect = false; + + if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) && + (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)) + return -EINVAL; + + q_data = get_q_data(ctx, s->type); + if (!q_data) + return -EINVAL; + + switch (s->target) { + case V4L2_SEL_TGT_COMPOSE_DEFAULT: + case V4L2_SEL_TGT_COMPOSE_BOUNDS: + if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + break; + case V4L2_SEL_TGT_CROP_BOUNDS: + case V4L2_SEL_TGT_CROP_DEFAULT: + if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + break; + case V4L2_SEL_TGT_COMPOSE: + if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + use_c_rect = true; + break; + case V4L2_SEL_TGT_CROP: + if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + use_c_rect = true; + break; + default: + return -EINVAL; + } + + if (use_c_rect) { + /* + * for CROP/COMPOSE target type, return c_rect params from the + * respective buffer type + */ + s->r = q_data->c_rect; + } else { + /* + * for DEFAULT/BOUNDS target type, return width and height from + * S_FMT of the respective buffer type + */ + s->r.left = 0; + s->r.top = 0; + s->r.width = q_data->width; + s->r.height = q_data->height; + } + + return 0; +} + + +static int vpe_s_selection(struct file *file, void *fh, + struct v4l2_selection *s) +{ + struct vpe_ctx *ctx = file2ctx(file); + struct vpe_q_data *q_data; + struct v4l2_selection sel = *s; + int ret; + + ret = __vpe_try_selection(ctx, &sel); + if (ret) + return ret; + + q_data = get_q_data(ctx, sel.type); + if (!q_data) + return -EINVAL; + + if ((q_data->c_rect.left == sel.r.left) && + (q_data->c_rect.top == sel.r.top) && + (q_data->c_rect.width == sel.r.width) && + (q_data->c_rect.height == sel.r.height)) { + vpe_dbg(ctx->dev, + "requested crop/compose values are already set\n"); + return 0; + } + + q_data->c_rect = sel.r; + + return set_srcdst_params(ctx); +} + static int vpe_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { @@ -1678,6 +1825,9 @@ static const struct v4l2_ioctl_ops vpe_ioctl_ops = { .vidioc_try_fmt_vid_out_mplane = vpe_try_fmt, .vidioc_s_fmt_vid_out_mplane = vpe_s_fmt, + .vidioc_g_selection = vpe_g_selection, + .vidioc_s_selection = vpe_s_selection, + .vidioc_reqbufs = vpe_reqbufs, .vidioc_querybuf = vpe_querybuf, -- 2.7.4