#include <string.h>
#include <sys/time.h>
-#include "v4l2src_calls.h"
#include <unistd.h>
+#include "gst/video/gstvideometa.h"
+#include "gst/video/gstvideopool.h"
+
+#include "gstv4l2src.h"
+
#include "gstv4l2colorbalance.h"
#include "gstv4l2tuner.h"
#ifdef HAVE_XVIDEO
GST_DEBUG_CATEGORY (v4l2src_debug);
#define GST_CAT_DEFAULT v4l2src_debug
-#define PROP_DEF_QUEUE_SIZE 2
#define PROP_DEF_ALWAYS_COPY TRUE
#define PROP_DEF_DECIMATE 1
{
PROP_0,
V4L2_STD_OBJECT_PROPS,
- PROP_QUEUE_SIZE,
PROP_ALWAYS_COPY,
PROP_DECIMATE
};
-GST_IMPLEMENT_V4L2_PROBE_METHODS (GstV4l2SrcClass, gst_v4l2src);
GST_IMPLEMENT_V4L2_COLOR_BALANCE_METHODS (GstV4l2Src, gst_v4l2src);
GST_IMPLEMENT_V4L2_TUNER_METHODS (GstV4l2Src, gst_v4l2src);
#ifdef HAVE_XVIDEO
static void gst_v4l2src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
-static gboolean
-gst_v4l2src_iface_supported (GstImplementsInterface * iface, GType iface_type)
-{
- GstV4l2Object *v4l2object = GST_V4L2SRC (iface)->v4l2object;
-
-#ifdef HAVE_XVIDEO
- g_assert (iface_type == GST_TYPE_TUNER ||
- iface_type == GST_TYPE_X_OVERLAY ||
- iface_type == GST_TYPE_COLOR_BALANCE ||
- iface_type == GST_TYPE_VIDEO_ORIENTATION);
-#else
- g_assert (iface_type == GST_TYPE_TUNER ||
- iface_type == GST_TYPE_COLOR_BALANCE ||
- iface_type == GST_TYPE_VIDEO_ORIENTATION);
-#endif
-
- if (v4l2object->video_fd == -1)
- return FALSE;
-
+#define gst_v4l2src_parent_class parent_class
+G_DEFINE_TYPE_WITH_CODE (GstV4l2Src, gst_v4l2src, GST_TYPE_PUSH_SRC,
+ G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_v4l2src_uri_handler_init);
+ G_IMPLEMENT_INTERFACE (GST_TYPE_TUNER, gst_v4l2src_tuner_interface_init);
#ifdef HAVE_XVIDEO
- if (iface_type == GST_TYPE_X_OVERLAY && !GST_V4L2_IS_OVERLAY (v4l2object))
- return FALSE;
+ /* FIXME: does GstXOverlay for v4l2src make sense in a GStreamer context? */
+ G_IMPLEMENT_INTERFACE (GST_TYPE_X_OVERLAY,
+ gst_v4l2src_xoverlay_interface_init);
#endif
-
- return TRUE;
-}
-
-static void
-gst_v4l2src_interface_init (GstImplementsInterfaceClass * klass)
-{
- /*
- * default virtual functions
- */
- klass->supported = gst_v4l2src_iface_supported;
-}
-
-static void
-gst_v4l2src_init_interfaces (GType type)
-{
- static const GInterfaceInfo urihandler_info = {
- gst_v4l2src_uri_handler_init,
- NULL,
- NULL
- };
-
- static const GInterfaceInfo v4l2iface_info = {
- (GInterfaceInitFunc) gst_v4l2src_interface_init,
- NULL,
- NULL,
- };
- static const GInterfaceInfo v4l2_tuner_info = {
- (GInterfaceInitFunc) gst_v4l2src_tuner_interface_init,
- NULL,
- NULL,
- };
-#ifdef HAVE_XVIDEO
- /* FIXME: does GstXOverlay for v4l2src make sense in a GStreamer context? */
- static const GInterfaceInfo v4l2_xoverlay_info = {
- (GInterfaceInitFunc) gst_v4l2src_xoverlay_interface_init,
- NULL,
- NULL,
- };
-#endif
- static const GInterfaceInfo v4l2_colorbalance_info = {
- (GInterfaceInitFunc) gst_v4l2src_color_balance_interface_init,
- NULL,
- NULL,
- };
- static const GInterfaceInfo v4l2_videoorientation_info = {
- (GInterfaceInitFunc) gst_v4l2src_video_orientation_interface_init,
- NULL,
- NULL,
- };
- static const GInterfaceInfo v4l2_propertyprobe_info = {
- (GInterfaceInitFunc) gst_v4l2src_property_probe_interface_init,
- NULL,
- NULL,
- };
-
- g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
- g_type_add_interface_static (type,
- GST_TYPE_IMPLEMENTS_INTERFACE, &v4l2iface_info);
- g_type_add_interface_static (type, GST_TYPE_TUNER, &v4l2_tuner_info);
-#ifdef HAVE_XVIDEO
- g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &v4l2_xoverlay_info);
-#endif
- g_type_add_interface_static (type,
- GST_TYPE_COLOR_BALANCE, &v4l2_colorbalance_info);
- g_type_add_interface_static (type,
- GST_TYPE_VIDEO_ORIENTATION, &v4l2_videoorientation_info);
- g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE,
- &v4l2_propertyprobe_info);
-}
-
-GST_BOILERPLATE_FULL (GstV4l2Src, gst_v4l2src, GstPushSrc, GST_TYPE_PUSH_SRC,
- gst_v4l2src_init_interfaces);
+ G_IMPLEMENT_INTERFACE (GST_TYPE_COLOR_BALANCE,
+ gst_v4l2src_color_balance_interface_init);
+ G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_ORIENTATION,
+ gst_v4l2src_video_orientation_interface_init));
static void gst_v4l2src_dispose (GObject * object);
static void gst_v4l2src_finalize (GstV4l2Src * v4l2src);
static gboolean gst_v4l2src_unlock_stop (GstBaseSrc * src);
static gboolean gst_v4l2src_stop (GstBaseSrc * src);
static gboolean gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps);
-static GstCaps *gst_v4l2src_get_caps (GstBaseSrc * src);
+static GstCaps *gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter);
static gboolean gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query);
-static GstFlowReturn gst_v4l2src_create (GstPushSrc * src, GstBuffer ** out);
-static void gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
+static gboolean gst_v4l2src_decide_allocation (GstBaseSrc * src,
+ GstQuery * query);
+static GstFlowReturn gst_v4l2src_fill (GstPushSrc * src, GstBuffer * out);
+static GstCaps *gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
static gboolean gst_v4l2src_negotiate (GstBaseSrc * basesrc);
static void gst_v4l2src_set_property (GObject * object, guint prop_id,
static void gst_v4l2src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
-/* get_frame io methods */
-static GstFlowReturn
-gst_v4l2src_get_read (GstV4l2Src * v4l2src, GstBuffer ** buf);
-static GstFlowReturn
-gst_v4l2src_get_mmap (GstV4l2Src * v4l2src, GstBuffer ** buf);
-
-static void
-gst_v4l2src_base_init (gpointer g_class)
-{
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
- GstV4l2SrcClass *gstv4l2src_class = GST_V4L2SRC_CLASS (g_class);
-
- gstv4l2src_class->v4l2_class_devices = NULL;
-
- GST_DEBUG_CATEGORY_INIT (v4l2src_debug, "v4l2src", 0, "V4L2 source element");
-
- gst_element_class_set_details_simple (gstelement_class,
- "Video (video4linux2) Source", "Source/Video",
- "Reads frames from a Video4Linux2 device",
- "Edgard Lima <edgard.lima@indt.org.br>,"
- " Stefan Kost <ensonic@users.sf.net>");
-
- gst_element_class_add_pad_template
- (gstelement_class,
- gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
- gst_v4l2_object_get_all_caps ()));
-}
-
static void
gst_v4l2src_class_init (GstV4l2SrcClass * klass)
{
gst_v4l2_object_install_properties_helper (gobject_class,
DEFAULT_PROP_DEVICE);
- g_object_class_install_property (gobject_class, PROP_QUEUE_SIZE,
- g_param_spec_uint ("queue-size", "Queue size",
- "Number of buffers to be enqueud in the driver in streaming mode",
- GST_V4L2_MIN_BUFFERS, GST_V4L2_MAX_BUFFERS, PROP_DEF_QUEUE_SIZE,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ALWAYS_COPY,
g_param_spec_boolean ("always-copy", "Always Copy",
"If the buffer will or not be used directly from mmap",
"Only use every nth frame", 1, G_MAXINT,
PROP_DEF_DECIMATE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ gst_element_class_set_details_simple (element_class,
+ "Video (video4linux2) Source", "Source/Video",
+ "Reads frames from a Video4Linux2 device",
+ "Edgard Lima <edgard.lima@indt.org.br>, "
+ "Stefan Kost <ensonic@users.sf.net>");
+
+ gst_element_class_add_pad_template
+ (element_class,
+ gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ gst_v4l2_object_get_all_caps ()));
+
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_get_caps);
basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_set_caps);
basesrc_class->start = GST_DEBUG_FUNCPTR (gst_v4l2src_start);
basesrc_class->query = GST_DEBUG_FUNCPTR (gst_v4l2src_query);
basesrc_class->fixate = GST_DEBUG_FUNCPTR (gst_v4l2src_fixate);
basesrc_class->negotiate = GST_DEBUG_FUNCPTR (gst_v4l2src_negotiate);
+ basesrc_class->decide_allocation =
+ GST_DEBUG_FUNCPTR (gst_v4l2src_decide_allocation);
+
+ pushsrc_class->fill = GST_DEBUG_FUNCPTR (gst_v4l2src_fill);
- pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_v4l2src_create);
+ klass->v4l2_class_devices = NULL;
+
+ GST_DEBUG_CATEGORY_INIT (v4l2src_debug, "v4l2src", 0, "V4L2 source element");
}
static void
-gst_v4l2src_init (GstV4l2Src * v4l2src, GstV4l2SrcClass * klass)
+gst_v4l2src_init (GstV4l2Src * v4l2src)
{
/* fixme: give an update_fps_function */
v4l2src->v4l2object = gst_v4l2_object_new (GST_ELEMENT (v4l2src),
V4L2_BUF_TYPE_VIDEO_CAPTURE, DEFAULT_PROP_DEVICE,
gst_v4l2_get_input, gst_v4l2_set_input, NULL);
- /* number of buffers requested */
- v4l2src->num_buffers = PROP_DEF_QUEUE_SIZE;
-
- v4l2src->always_copy = PROP_DEF_ALWAYS_COPY;
+ v4l2src->v4l2object->always_copy = PROP_DEF_ALWAYS_COPY;
v4l2src->decimate = PROP_DEF_DECIMATE;
- v4l2src->is_capturing = FALSE;
-
gst_base_src_set_format (GST_BASE_SRC (v4l2src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (v4l2src), TRUE);
-
- v4l2src->fps_d = 0;
- v4l2src->fps_n = 0;
}
-
static void
gst_v4l2src_dispose (GObject * object)
{
if (!gst_v4l2_object_set_property_helper (v4l2src->v4l2object,
prop_id, value, pspec)) {
switch (prop_id) {
- case PROP_QUEUE_SIZE:
- v4l2src->num_buffers = g_value_get_uint (value);
- break;
case PROP_ALWAYS_COPY:
- v4l2src->always_copy = g_value_get_boolean (value);
+ v4l2src->v4l2object->always_copy = g_value_get_boolean (value);
break;
case PROP_DECIMATE:
v4l2src->decimate = g_value_get_int (value);
}
}
-
static void
gst_v4l2src_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
if (!gst_v4l2_object_get_property_helper (v4l2src->v4l2object,
prop_id, value, pspec)) {
switch (prop_id) {
- case PROP_QUEUE_SIZE:
- g_value_set_uint (value, v4l2src->num_buffers);
- break;
case PROP_ALWAYS_COPY:
- g_value_set_boolean (value, v4l2src->always_copy);
+ g_value_set_boolean (value, v4l2src->v4l2object->always_copy);
break;
case PROP_DECIMATE:
g_value_set_int (value, v4l2src->decimate);
}
}
-
/* this function is a bit of a last resort */
-static void
+static GstCaps *
gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps)
{
GstStructure *structure;
GST_DEBUG_OBJECT (basesrc, "fixating caps %" GST_PTR_FORMAT, caps);
- for (i = 0; i < gst_caps_get_size (caps); ++i) {
- const GValue *v;
+ caps = gst_caps_make_writable (caps);
+ for (i = 0; i < gst_caps_get_size (caps); ++i) {
structure = gst_caps_get_structure (caps, i);
- /* FIXME such sizes? we usually fixate to something in the 320x200
- * range... */
- /* We are fixating to greater possble size (limited to GST_V4L2_MAX_SIZE)
+ /* We are fixating to a resonable 320x200 resolution
and the maximum framerate resolution for that size */
- gst_structure_fixate_field_nearest_int (structure, "width",
- GST_V4L2_MAX_SIZE);
- gst_structure_fixate_field_nearest_int (structure, "height",
- GST_V4L2_MAX_SIZE);
+ gst_structure_fixate_field_nearest_int (structure, "width", 320);
+ gst_structure_fixate_field_nearest_int (structure, "height", 200);
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
G_MAXINT, 1);
-
- v = gst_structure_get_value (structure, "format");
- if (v && G_VALUE_TYPE (v) != GST_TYPE_FOURCC) {
- guint32 fourcc;
-
- g_return_if_fail (G_VALUE_TYPE (v) == GST_TYPE_LIST);
-
- fourcc = gst_value_get_fourcc (gst_value_list_get_value (v, 0));
- gst_structure_set (structure, "format", GST_TYPE_FOURCC, fourcc, NULL);
- }
+ gst_structure_fixate_field (structure, "format");
}
GST_DEBUG_OBJECT (basesrc, "fixated caps %" GST_PTR_FORMAT, caps);
+
+ caps = GST_BASE_SRC_CLASS (parent_class)->fixate (basesrc, caps);
+
+ return caps;
}
gboolean result = FALSE;
/* first see what is possible on our source pad */
- thiscaps = gst_pad_get_caps (GST_BASE_SRC_PAD (basesrc));
+ thiscaps = gst_pad_query_caps (GST_BASE_SRC_PAD (basesrc), NULL);
GST_DEBUG_OBJECT (basesrc, "caps of src: %" GST_PTR_FORMAT, thiscaps);
LOG_CAPS (basesrc, thiscaps);
goto no_nego_needed;
/* get the peer caps */
- peercaps = gst_pad_peer_get_caps (GST_BASE_SRC_PAD (basesrc));
+ peercaps = gst_pad_peer_query_caps (GST_BASE_SRC_PAD (basesrc), thiscaps);
GST_DEBUG_OBJECT (basesrc, "caps of peer: %" GST_PTR_FORMAT, peercaps);
LOG_CAPS (basesrc, peercaps);
if (peercaps && !gst_caps_is_any (peercaps)) {
* resolution strictly bigger then the first peer caps */
if (gst_caps_get_size (icaps) > 1) {
GstStructure *s = gst_caps_get_structure (peercaps, 0);
-
int best = 0;
-
int twidth, theight;
-
int width = G_MAXINT, height = G_MAXINT;
if (gst_structure_get_int (s, "width", &twidth)
*/
for (i = gst_caps_get_size (icaps) - 1; i >= 0; i--) {
GstStructure *is = gst_caps_get_structure (icaps, i);
-
int w, h;
if (gst_structure_get_int (is, "width", &w)
}
}
gst_caps_unref (thiscaps);
- gst_caps_unref (peercaps);
} else {
/* no peer or peer have ANY caps, work with our own caps then */
caps = thiscaps;
}
+ if (peercaps)
+ gst_caps_unref (peercaps);
if (caps) {
- caps = gst_caps_make_writable (caps);
- gst_caps_truncate (caps);
+ caps = gst_caps_truncate (caps);
/* now fixate */
if (!gst_caps_is_empty (caps)) {
- gst_pad_fixate_caps (GST_BASE_SRC_PAD (basesrc), caps);
+ caps = gst_v4l2src_fixate (basesrc, caps);
GST_DEBUG_OBJECT (basesrc, "fixated to: %" GST_PTR_FORMAT, caps);
LOG_CAPS (basesrc, caps);
result = TRUE;
} else if (gst_caps_is_fixed (caps)) {
/* yay, fixed caps, use those then */
- if (gst_pad_set_caps (GST_BASE_SRC_PAD (basesrc), caps))
- result = TRUE;
+ result = gst_base_src_set_caps (basesrc, caps);
}
}
gst_caps_unref (caps);
}
static GstCaps *
-gst_v4l2src_get_caps (GstBaseSrc * src)
+gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter)
{
- GstV4l2Src *v4l2src = GST_V4L2SRC (src);
+ GstV4l2Src *v4l2src;
+ GstV4l2Object *obj;
GstCaps *ret;
GSList *walk;
GSList *formats;
- if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) {
+ v4l2src = GST_V4L2SRC (src);
+ obj = v4l2src->v4l2object;
+
+ if (!GST_V4L2_IS_OPEN (obj)) {
/* FIXME: copy? */
return
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD
if (v4l2src->probed_caps)
return gst_caps_ref (v4l2src->probed_caps);
- formats = gst_v4l2_object_get_format_list (v4l2src->v4l2object);
+ formats = gst_v4l2_object_get_format_list (obj);
ret = gst_caps_new_empty ();
for (walk = formats; walk; walk = walk->next) {
struct v4l2_fmtdesc *format;
-
GstStructure *template;
format = (struct v4l2_fmtdesc *) walk->data;
GstCaps *tmp;
tmp =
- gst_v4l2_object_probe_caps_for_format (v4l2src->v4l2object,
+ gst_v4l2_object_probe_caps_for_format (obj,
format->pixelformat, template);
if (tmp)
gst_caps_append (ret, tmp);
gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps)
{
GstV4l2Src *v4l2src;
- gint w = 0, h = 0;
- gboolean interlaced;
- struct v4l2_fmtdesc *format;
- guint fps_n, fps_d;
- guint size;
+ GstV4l2Object *obj;
v4l2src = GST_V4L2SRC (src);
-
- /* if we're not open, punt -- we'll get setcaps'd later via negotiate */
- if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object))
- return FALSE;
+ obj = v4l2src->v4l2object;
/* make sure we stop capturing and dealloc buffers */
- if (GST_V4L2_IS_ACTIVE (v4l2src->v4l2object)) {
- /* both will throw an element-error on failure */
- if (!gst_v4l2src_capture_stop (v4l2src))
- return FALSE;
- if (!gst_v4l2src_capture_deinit (v4l2src))
- return FALSE;
- }
-
- /* we want our own v4l2 type of fourcc codes */
- if (!gst_v4l2_object_get_caps_info (v4l2src->v4l2object, caps, &format, &w,
- &h, &interlaced, &fps_n, &fps_d, &size)) {
- GST_INFO_OBJECT (v4l2src,
- "can't get capture format from caps %" GST_PTR_FORMAT, caps);
+ if (!gst_v4l2_object_stop (obj))
return FALSE;
- }
-
- GST_DEBUG_OBJECT (v4l2src, "trying to set_capture %dx%d at %d/%d fps, "
- "format %s", w, h, fps_n, fps_d, format->description);
- if (!gst_v4l2src_set_capture (v4l2src, format->pixelformat, w, h,
- interlaced, fps_n, fps_d))
+ if (!gst_v4l2_object_set_format (obj, caps))
/* error already posted */
return FALSE;
- if (!gst_v4l2src_capture_init (v4l2src, caps))
- return FALSE;
+ return TRUE;
+}
+
+static gboolean
+gst_v4l2src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
+{
+ GstV4l2Src *src;
+ GstV4l2Object *obj;
+ GstBufferPool *pool;
+ guint size, min, max;
+ gboolean update;
+
+ src = GST_V4L2SRC (bsrc);
+ obj = src->v4l2object;
- if (v4l2src->use_mmap) {
- v4l2src->get_frame = gst_v4l2src_get_mmap;
+ if (gst_query_get_n_allocation_pools (query) > 0) {
+ gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
+ update = TRUE;
} else {
- v4l2src->get_frame = gst_v4l2src_get_read;
+ pool = NULL;
+ min = max = 0;
+ size = 0;
+ update = FALSE;
}
- if (!gst_v4l2src_capture_start (v4l2src))
- return FALSE;
+ GST_DEBUG_OBJECT (src, "allocation: size:%u min:%u max:%u pool:%"
+ GST_PTR_FORMAT, size, min, max, pool);
+
+ if (min != 0) {
+ /* if there is a min-buffers suggestion, use it. We add 1 because we need 1
+ * buffer extra to capture while the other two buffers are downstream */
+ min += 1;
+ } else {
+ min = 2;
+ }
+
+ /* select a pool */
+ switch (obj->mode) {
+ case GST_V4L2_IO_RW:
+ if (pool == NULL) {
+ /* no downstream pool, use our own then */
+ GST_DEBUG_OBJECT (src,
+ "read/write mode: no downstream pool, using our own");
+ pool = GST_BUFFER_POOL_CAST (obj->pool);
+ size = obj->sizeimage;
+ } else {
+ /* in READ/WRITE mode, prefer a downstream pool because our own pool
+ * doesn't help much, we have to write to it as well */
+ GST_DEBUG_OBJECT (src, "read/write mode: using downstream pool");
+ /* use the bigest size, when we use our own pool we can't really do any
+ * other size than what the hardware gives us but for downstream pools
+ * we can try */
+ size = MAX (size, obj->sizeimage);
+ }
+ break;
+ case GST_V4L2_IO_MMAP:
+ case GST_V4L2_IO_USERPTR:
+ /* in streaming mode, prefer our own pool */
+ pool = GST_BUFFER_POOL_CAST (obj->pool);
+ size = obj->sizeimage;
+ GST_DEBUG_OBJECT (src,
+ "streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
+ break;
+ case GST_V4L2_IO_AUTO:
+ default:
+ GST_WARNING_OBJECT (src, "unhandled mode");
+ break;
+ }
+
+ if (pool) {
+ GstStructure *config;
+ const GstCaps *caps;
+
+ config = gst_buffer_pool_get_config (pool);
+ gst_buffer_pool_config_get (config, &caps, NULL, NULL, NULL, NULL, NULL,
+ NULL);
+ gst_buffer_pool_config_set (config, caps, size, min, max, 0, 0, 0);
+
+ /* if downstream supports video metadata, add this to the pool config */
+ if (gst_query_has_allocation_meta (query, GST_VIDEO_META_API_TYPE))
+ gst_buffer_pool_config_add_option (config,
+ GST_BUFFER_POOL_OPTION_VIDEO_META);
+
+ gst_buffer_pool_set_config (pool, config);
+ }
- /* now store the expected output size */
- v4l2src->frame_byte_size = size;
+ if (update)
+ gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
+ else
+ gst_query_add_allocation_pool (query, pool, size, min, max);
return TRUE;
}
gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query)
{
GstV4l2Src *src;
-
+ GstV4l2Object *obj;
gboolean res = FALSE;
src = GST_V4L2SRC (bsrc);
+ obj = src->v4l2object;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:{
GstClockTime min_latency, max_latency;
+ guint32 fps_n, fps_d;
/* device must be open */
- if (!GST_V4L2_IS_OPEN (src->v4l2object)) {
+ if (!GST_V4L2_IS_OPEN (obj)) {
GST_WARNING_OBJECT (src,
"Can't give latency since device isn't open !");
goto done;
}
+ fps_n = GST_V4L2_FPS_N (obj);
+ fps_d = GST_V4L2_FPS_D (obj);
+
/* we must have a framerate */
- if (src->fps_n <= 0 || src->fps_d <= 0) {
+ if (fps_n <= 0 || fps_d <= 0) {
GST_WARNING_OBJECT (src,
"Can't give latency since framerate isn't fixated !");
goto done;
}
/* min latency is the time to capture one frame */
- min_latency =
- gst_util_uint64_scale_int (GST_SECOND, src->fps_d, src->fps_n);
+ min_latency = gst_util_uint64_scale_int (GST_SECOND, fps_d, fps_n);
/* max latency is total duration of the frame buffer */
- max_latency = src->num_buffers * min_latency;
+ max_latency =
+ GST_V4L2_BUFFER_POOL_CAST (obj->pool)->max_buffers * min_latency;
GST_DEBUG_OBJECT (bsrc,
"report latency min %" GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
/* activate settings for first frame */
v4l2src->ctrl_time = 0;
- gst_object_sync_values (G_OBJECT (src), v4l2src->ctrl_time);
+ gst_object_sync_values (GST_OBJECT (src), v4l2src->ctrl_time);
return TRUE;
}
gst_v4l2src_unlock (GstBaseSrc * src)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
-
- GST_LOG_OBJECT (src, "Flushing");
- gst_poll_set_flushing (v4l2src->v4l2object->poll, TRUE);
-
- return TRUE;
+ return gst_v4l2_object_unlock (v4l2src->v4l2object);
}
static gboolean
gst_v4l2src_unlock_stop (GstBaseSrc * src)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
-
- GST_LOG_OBJECT (src, "No longer flushing");
- gst_poll_set_flushing (v4l2src->v4l2object->poll, FALSE);
-
- return TRUE;
+ return gst_v4l2_object_unlock_stop (v4l2src->v4l2object);
}
static gboolean
gst_v4l2src_stop (GstBaseSrc * src)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
+ GstV4l2Object *obj = v4l2src->v4l2object;
- if (GST_V4L2_IS_ACTIVE (v4l2src->v4l2object)
- && !gst_v4l2src_capture_stop (v4l2src))
- return FALSE;
-
- if (v4l2src->v4l2object->buffer != NULL) {
- if (!gst_v4l2src_capture_deinit (v4l2src))
+ if (GST_V4L2_IS_ACTIVE (obj)) {
+ if (!gst_v4l2_object_stop (obj))
return FALSE;
}
-
- v4l2src->fps_d = 0;
- v4l2src->fps_n = 0;
-
return TRUE;
}
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstV4l2Src *v4l2src = GST_V4L2SRC (element);
+ GstV4l2Object *obj = v4l2src->v4l2object;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
/* open the device */
- if (!gst_v4l2_object_start (v4l2src->v4l2object))
+ if (!gst_v4l2_object_open (obj))
return GST_STATE_CHANGE_FAILURE;
break;
default:
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
/* close the device */
- if (!gst_v4l2_object_stop (v4l2src->v4l2object))
+ if (!gst_v4l2_object_close (obj))
return GST_STATE_CHANGE_FAILURE;
if (v4l2src->probed_caps) {
}
static GstFlowReturn
-gst_v4l2src_get_read (GstV4l2Src * v4l2src, GstBuffer ** buf)
+gst_v4l2src_fill (GstPushSrc * src, GstBuffer * buf)
{
- gint amount;
- gint ret;
-
- gint buffersize;
-
- buffersize = v4l2src->frame_byte_size;
- /* In case the size per frame is unknown assume it's a streaming format (e.g.
- * mpegts) and grab a reasonable default size instead */
- if (buffersize == 0)
- buffersize = GST_BASE_SRC (v4l2src)->blocksize;
-
- *buf = gst_buffer_new_and_alloc (buffersize);
-
- do {
- ret = gst_poll_wait (v4l2src->v4l2object->poll, GST_CLOCK_TIME_NONE);
- if (G_UNLIKELY (ret < 0)) {
- if (errno == EBUSY)
- goto stopped;
- if (errno == ENXIO) {
- GST_DEBUG_OBJECT (v4l2src,
- "v4l2 device doesn't support polling. Disabling");
- v4l2src->v4l2object->can_poll_device = FALSE;
- } else {
- if (errno != EAGAIN && errno != EINTR)
- goto select_error;
- }
- }
- amount =
- v4l2_read (v4l2src->v4l2object->video_fd, GST_BUFFER_DATA (*buf),
- buffersize);
- if (amount == buffersize) {
- break;
- } else if (amount == -1) {
- if (errno == EAGAIN || errno == EINTR) {
- continue;
- } else
- goto read_error;
- } else {
- /* short reads can happen if a signal interrupts the read */
- continue;
- }
- } while (TRUE);
-
- /* we set the buffer metadata in gst_v4l2src_create() */
-
- return GST_FLOW_OK;
+ GstV4l2Src *v4l2src = GST_V4L2SRC (src);
+ GstV4l2Object *obj = v4l2src->v4l2object;
+ GstFlowReturn ret;
+ GstClock *clock;
+ GstClockTime timestamp, duration;
- /* ERRORS */
-select_error:
- {
- GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ, (NULL),
- ("select error %d: %s (%d)", ret, g_strerror (errno), errno));
- return GST_FLOW_ERROR;
- }
-stopped:
- {
- GST_DEBUG ("stop called");
- return GST_FLOW_WRONG_STATE;
- }
-read_error:
- {
- GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
- (_("Error reading %d bytes from device '%s'."),
- buffersize, v4l2src->v4l2object->videodev), GST_ERROR_SYSTEM);
+#if 0
+ int i;
+ /* decimate, just capture and throw away frames */
+ for (i = 0; i < v4l2src->decimate - 1; i++) {
+ ret = gst_v4l2_buffer_pool_process (obj, buf);
+ if (ret != GST_FLOW_OK) {
+ return ret;
+ }
gst_buffer_unref (*buf);
- return GST_FLOW_ERROR;
}
-}
+#endif
-static GstFlowReturn
-gst_v4l2src_get_mmap (GstV4l2Src * v4l2src, GstBuffer ** buf)
-{
- GstBuffer *temp;
- GstFlowReturn ret;
- guint size;
- guint count = 0;
+ ret =
+ gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL_CAST (obj->pool), buf);
-again:
- ret = gst_v4l2src_grab_frame (v4l2src, &temp);
if (G_UNLIKELY (ret != GST_FLOW_OK))
- goto done;
-
- if (v4l2src->frame_byte_size > 0) {
- size = GST_BUFFER_SIZE (temp);
+ goto error;
- /* if size does not match what we expected, try again */
- if (size != v4l2src->frame_byte_size) {
- GST_ELEMENT_WARNING (v4l2src, RESOURCE, READ,
- (_("Got unexpected frame size of %u instead of %u."),
- size, v4l2src->frame_byte_size), (NULL));
- gst_buffer_unref (temp);
- if (count++ > 50)
- goto size_error;
-
- goto again;
- }
+ /* set buffer metadata */
+ GST_BUFFER_OFFSET (buf) = v4l2src->offset++;
+ GST_BUFFER_OFFSET_END (buf) = v4l2src->offset;
+
+ /* timestamps, LOCK to get clock and base time. */
+ /* FIXME: element clock and base_time is rarely changing */
+ GST_OBJECT_LOCK (v4l2src);
+ if ((clock = GST_ELEMENT_CLOCK (v4l2src))) {
+ /* we have a clock, get base time and ref clock */
+ timestamp = GST_ELEMENT (v4l2src)->base_time;
+ gst_object_ref (clock);
+ } else {
+ /* no clock, can't set timestamps */
+ timestamp = GST_CLOCK_TIME_NONE;
}
+ GST_OBJECT_UNLOCK (v4l2src);
- *buf = temp;
-done:
- return ret;
+ duration = obj->duration;
- /* ERRORS */
-size_error:
- {
- GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
- (_("Error reading %d bytes on device '%s'."),
- v4l2src->frame_byte_size, v4l2src->v4l2object->videodev), (NULL));
- return GST_FLOW_ERROR;
- }
-}
+ if (G_LIKELY (clock)) {
+ /* the time now is the time of the clock minus the base time */
+ timestamp = gst_clock_get_time (clock) - timestamp;
+ gst_object_unref (clock);
-static GstFlowReturn
-gst_v4l2src_create (GstPushSrc * src, GstBuffer ** buf)
-{
- GstV4l2Src *v4l2src = GST_V4L2SRC (src);
- int i;
- GstFlowReturn ret;
-
- for (i = 0; i < v4l2src->decimate - 1; i++) {
- ret = v4l2src->get_frame (v4l2src, buf);
- if (ret != GST_FLOW_OK) {
- return ret;
+ /* if we have a framerate adjust timestamp for frame latency */
+ if (GST_CLOCK_TIME_IS_VALID (duration)) {
+ if (timestamp > duration)
+ timestamp -= duration;
+ else
+ timestamp = 0;
}
- gst_buffer_unref (*buf);
}
- ret = v4l2src->get_frame (v4l2src, buf);
+ /* activate settings for next frame */
+ if (GST_CLOCK_TIME_IS_VALID (duration)) {
+ v4l2src->ctrl_time += duration;
+ } else {
+ /* this is not very good (as it should be the next timestamp),
+ * still good enough for linear fades (as long as it is not -1)
+ */
+ v4l2src->ctrl_time = timestamp;
+ }
+ gst_object_sync_values (GST_OBJECT (src), v4l2src->ctrl_time);
+ GST_INFO_OBJECT (src, "sync to %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (v4l2src->ctrl_time));
- /* set buffer metadata */
- if (G_LIKELY (ret == GST_FLOW_OK && *buf)) {
- GstClock *clock;
- GstClockTime timestamp;
-
- GST_BUFFER_OFFSET (*buf) = v4l2src->offset++;
- GST_BUFFER_OFFSET_END (*buf) = v4l2src->offset;
-
- /* timestamps, LOCK to get clock and base time. */
- /* FIXME: element clock and base_time is rarely changing */
- GST_OBJECT_LOCK (v4l2src);
- if ((clock = GST_ELEMENT_CLOCK (v4l2src))) {
- /* we have a clock, get base time and ref clock */
- timestamp = GST_ELEMENT (v4l2src)->base_time;
- gst_object_ref (clock);
- } else {
- /* no clock, can't set timestamps */
- timestamp = GST_CLOCK_TIME_NONE;
- }
- GST_OBJECT_UNLOCK (v4l2src);
-
- if (G_LIKELY (clock)) {
- /* the time now is the time of the clock minus the base time */
- timestamp = gst_clock_get_time (clock) - timestamp;
- gst_object_unref (clock);
-
- /* if we have a framerate adjust timestamp for frame latency */
- if (GST_CLOCK_TIME_IS_VALID (v4l2src->duration)) {
- if (timestamp > v4l2src->duration)
- timestamp -= v4l2src->duration;
- else
- timestamp = 0;
- }
- }
+ /* FIXME: use the timestamp from the buffer itself! */
+ GST_BUFFER_TIMESTAMP (buf) = timestamp;
+ GST_BUFFER_DURATION (buf) = duration;
- /* activate settings for next frame */
- if (GST_CLOCK_TIME_IS_VALID (v4l2src->duration)) {
- v4l2src->ctrl_time += v4l2src->duration;
- } else {
- /* this is not very good (as it should be the next timestamp),
- * still good enough for linear fades (as long as it is not -1)
- */
- v4l2src->ctrl_time = timestamp;
- }
- gst_object_sync_values (G_OBJECT (src), v4l2src->ctrl_time);
- GST_INFO_OBJECT (src, "sync to %" GST_TIME_FORMAT,
- GST_TIME_ARGS (v4l2src->ctrl_time));
+ return ret;
- /* FIXME: use the timestamp from the buffer itself! */
- GST_BUFFER_TIMESTAMP (*buf) = timestamp;
- GST_BUFFER_DURATION (*buf) = v4l2src->duration;
+ /* ERROR */
+error:
+ {
+ GST_ERROR_OBJECT (src, "error processing buffer");
+ return ret;
}
- return ret;
}
/* GstURIHandler interface */
static GstURIType
-gst_v4l2src_uri_get_type (void)
+gst_v4l2src_uri_get_type (GType type)
{
return GST_URI_SRC;
}
-static gchar **
-gst_v4l2src_uri_get_protocols (void)
+static const gchar *const *
+gst_v4l2src_uri_get_protocols (GType type)
{
- static gchar *protocols[] = { (char *) "v4l2", NULL };
+ static const gchar *protocols[] = { "v4l2", NULL };
return protocols;
}
-static const gchar *
+static gchar *
gst_v4l2src_uri_get_uri (GstURIHandler * handler)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (handler);
if (v4l2src->v4l2object->videodev != NULL) {
- gchar uri[256];
-
- /* need to return a const string, but also don't want to leak the generated
- * string, so just intern it - there's a limited number of video devices
- * after all */
- g_snprintf (uri, sizeof (uri), "v4l2://%s", v4l2src->v4l2object->videodev);
- return g_intern_string (uri);
+ return g_strdup_printf ("v4l2://%s", v4l2src->v4l2object->videodev);
}
- return "v4l2://";
+ return g_strdup ("v4l2://");
}
static gboolean
-gst_v4l2src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
+gst_v4l2src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
+ GError ** error)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (handler);
const gchar *device = DEFAULT_PROP_DEVICE;
projects / platform / upstream / gstreamer.git / blobdiff