/* GStreamer
*
* Copyright (C) 2009 Texas Instruments, Inc - http://www.ti.com/
*
* Description: V4L2 sink element
* Created on: Jul 2, 2009
* Author: Rob Clark <rob@ti.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-v4l2sink
*
* v4l2sink can be used to display video to v4l2 devices (screen overlays
* provided by the graphics hardware, tv-out, etc)
*
* <refsect2>
* <title>Example launch lines</title>
* |[
* gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video1
* ]| This pipeline displays a test pattern on /dev/video1
* |[
* gst-launch-1.0 -v videotestsrc ! navigationtest ! v4l2sink
* ]| A pipeline to test navigation events.
* While moving the mouse pointer over the test signal you will see a black box
* following the mouse pointer. If you press the mouse button somewhere on the
* video and release it somewhere else a green box will appear where you pressed
* the button and a red one where you released it. (The navigationtest element
* is part of gst-plugins-good.) You can observe here that even if the images
* are scaled through hardware the pointer coordinates are converted back to the
* original video frame geometry so that the box can be drawn to the correct
* position. This also handles borders correctly, limiting coordinates to the
* image area
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gst/video/gstvideometa.h"
#include "gstv4l2colorbalance.h"
#include "gstv4l2tuner.h"
#include "gstv4l2vidorient.h"
#include "gstv4l2sink.h"
#include "gst/gst-i18n-plugin.h"
#include <string.h>
GST_DEBUG_CATEGORY (v4l2sink_debug);
#define GST_CAT_DEFAULT v4l2sink_debug
#define DEFAULT_PROP_DEVICE "/dev/video1"
enum
{
PROP_0,
V4L2_STD_OBJECT_PROPS,
PROP_OVERLAY_TOP,
PROP_OVERLAY_LEFT,
PROP_OVERLAY_WIDTH,
PROP_OVERLAY_HEIGHT,
PROP_CROP_TOP,
PROP_CROP_LEFT,
PROP_CROP_WIDTH,
PROP_CROP_HEIGHT,
};
GST_IMPLEMENT_V4L2_COLOR_BALANCE_METHODS (GstV4l2Sink, gst_v4l2sink);
GST_IMPLEMENT_V4L2_TUNER_METHODS (GstV4l2Sink, gst_v4l2sink);
GST_IMPLEMENT_V4L2_VIDORIENT_METHODS (GstV4l2Sink, gst_v4l2sink);
#define gst_v4l2sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstV4l2Sink, gst_v4l2sink, GST_TYPE_VIDEO_SINK,
G_IMPLEMENT_INTERFACE (GST_TYPE_TUNER, gst_v4l2sink_tuner_interface_init);
G_IMPLEMENT_INTERFACE (GST_TYPE_COLOR_BALANCE,
gst_v4l2sink_color_balance_interface_init);
G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_ORIENTATION,
gst_v4l2sink_video_orientation_interface_init));
static void gst_v4l2sink_finalize (GstV4l2Sink * v4l2sink);
/* GObject methods: */
static void gst_v4l2sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_v4l2sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
/* GstElement methods: */
static GstStateChangeReturn gst_v4l2sink_change_state (GstElement * element,
GstStateChange transition);
/* GstBaseSink methods: */
static gboolean gst_v4l2sink_propose_allocation (GstBaseSink * bsink,
GstQuery * query);
static GstCaps *gst_v4l2sink_get_caps (GstBaseSink * bsink, GstCaps * filter);
static gboolean gst_v4l2sink_set_caps (GstBaseSink * bsink, GstCaps * caps);
static GstFlowReturn gst_v4l2sink_show_frame (GstVideoSink * bsink,
GstBuffer * buf);
static gboolean gst_v4l2sink_unlock (GstBaseSink * sink);
static gboolean gst_v4l2sink_unlock_stop (GstBaseSink * sink);
static void
gst_v4l2sink_class_init (GstV4l2SinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseSinkClass *basesink_class;
GstVideoSinkClass *videosink_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
basesink_class = GST_BASE_SINK_CLASS (klass);
videosink_class = GST_VIDEO_SINK_CLASS (klass);
gobject_class->finalize = (GObjectFinalizeFunc) gst_v4l2sink_finalize;
gobject_class->set_property = gst_v4l2sink_set_property;
gobject_class->get_property = gst_v4l2sink_get_property;
element_class->change_state = gst_v4l2sink_change_state;
gst_v4l2_object_install_properties_helper (gobject_class,
DEFAULT_PROP_DEVICE);
g_object_class_install_property (gobject_class, PROP_OVERLAY_TOP,
g_param_spec_int ("overlay-top", "Overlay top",
"The topmost (y) coordinate of the video overlay; top left corner of screen is 0,0",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OVERLAY_LEFT,
g_param_spec_int ("overlay-left", "Overlay left",
"The leftmost (x) coordinate of the video overlay; top left corner of screen is 0,0",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OVERLAY_WIDTH,
g_param_spec_uint ("overlay-width", "Overlay width",
"The width of the video overlay; default is equal to negotiated image width",
0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OVERLAY_HEIGHT,
g_param_spec_uint ("overlay-height", "Overlay height",
"The height of the video overlay; default is equal to negotiated image height",
0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CROP_TOP,
g_param_spec_int ("crop-top", "Crop top",
"The topmost (y) coordinate of the video crop; top left corner of image is 0,0",
0x80000000, 0x7fffffff, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_CROP_LEFT,
g_param_spec_int ("crop-left", "Crop left",
"The leftmost (x) coordinate of the video crop; top left corner of image is 0,0",
0x80000000, 0x7fffffff, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_CROP_WIDTH,
g_param_spec_uint ("crop-width", "Crop width",
"The width of the video crop; default is equal to negotiated image width",
0, 0xffffffff, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_CROP_HEIGHT,
g_param_spec_uint ("crop-height", "Crop height",
"The height of the video crop; default is equal to negotiated image height",
0, 0xffffffff, 0, G_PARAM_READWRITE));
gst_element_class_set_static_metadata (element_class,
"Video (video4linux2) Sink", "Sink/Video",
"Displays frames on a video4linux2 device", "Rob Clark <rob@ti.com>,");
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_v4l2_object_get_all_caps ()));
basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_v4l2sink_get_caps);
basesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_v4l2sink_set_caps);
basesink_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_v4l2sink_propose_allocation);
basesink_class->unlock = GST_DEBUG_FUNCPTR (gst_v4l2sink_unlock);
basesink_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_v4l2sink_unlock_stop);
videosink_class->show_frame = GST_DEBUG_FUNCPTR (gst_v4l2sink_show_frame);
klass->v4l2_class_devices = NULL;
GST_DEBUG_CATEGORY_INIT (v4l2sink_debug, "v4l2sink", 0, "V4L2 sink element");
}
static void
gst_v4l2sink_init (GstV4l2Sink * v4l2sink)
{
v4l2sink->v4l2object = gst_v4l2_object_new (GST_ELEMENT (v4l2sink),
GST_OBJECT (GST_BASE_SINK_PAD (v4l2sink)), V4L2_BUF_TYPE_VIDEO_OUTPUT,
DEFAULT_PROP_DEVICE, gst_v4l2_get_output, gst_v4l2_set_output, NULL);
/* same default value for video output device as is used for
* v4l2src/capture is no good.. so lets set a saner default
* (which can be overridden by the one creating the v4l2sink
* after the constructor returns)
*/
g_object_set (v4l2sink, "device", "/dev/video1", NULL);
v4l2sink->overlay_fields_set = 0;
v4l2sink->crop_fields_set = 0;
}
static void
gst_v4l2sink_finalize (GstV4l2Sink * v4l2sink)
{
gst_v4l2_object_destroy (v4l2sink->v4l2object);
G_OBJECT_CLASS (parent_class)->finalize ((GObject *) (v4l2sink));
}
/*
* flags to indicate which overlay/crop properties the user has set (and
* therefore which ones should override the defaults from the driver)
*/
enum
{
RECT_TOP_SET = 0x01,
RECT_LEFT_SET = 0x02,
RECT_WIDTH_SET = 0x04,
RECT_HEIGHT_SET = 0x08
};
static void
gst_v4l2sink_sync_overlay_fields (GstV4l2Sink * v4l2sink)
{
if (!v4l2sink->overlay_fields_set)
return;
if (GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
GstV4l2Object *obj = v4l2sink->v4l2object;
struct v4l2_format format;
memset (&format, 0x00, sizeof (struct v4l2_format));
if (obj->device_caps & V4L2_CAP_VIDEO_OUTPUT_OVERLAY)
format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY;
else
format.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
if (obj->ioctl (obj->video_fd, VIDIOC_G_FMT, &format) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_G_FMT failed");
return;
}
GST_DEBUG_OBJECT (v4l2sink,
"setting overlay: overlay_fields_set=0x%02x, top=%d, left=%d, width=%d, height=%d",
v4l2sink->overlay_fields_set,
v4l2sink->overlay.top, v4l2sink->overlay.left,
v4l2sink->overlay.width, v4l2sink->overlay.height);
if (v4l2sink->overlay_fields_set & RECT_TOP_SET)
format.fmt.win.w.top = v4l2sink->overlay.top;
if (v4l2sink->overlay_fields_set & RECT_LEFT_SET)
format.fmt.win.w.left = v4l2sink->overlay.left;
if (v4l2sink->overlay_fields_set & RECT_WIDTH_SET)
format.fmt.win.w.width = v4l2sink->overlay.width;
if (v4l2sink->overlay_fields_set & RECT_HEIGHT_SET)
format.fmt.win.w.height = v4l2sink->overlay.height;
if (obj->ioctl (obj->video_fd, VIDIOC_S_FMT, &format) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_S_FMT failed");
return;
}
v4l2sink->overlay_fields_set = 0;
v4l2sink->overlay = format.fmt.win.w;
}
}
static void
gst_v4l2sink_sync_crop_fields (GstV4l2Sink * v4l2sink)
{
if (!v4l2sink->crop_fields_set)
return;
if (GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
GstV4l2Object *obj = v4l2sink->v4l2object;
struct v4l2_crop crop;
memset (&crop, 0x00, sizeof (struct v4l2_crop));
crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
if (obj->ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_G_CROP failed");
return;
}
GST_DEBUG_OBJECT (v4l2sink,
"setting crop: crop_fields_set=0x%02x, top=%d, left=%d, width=%d, height=%d",
v4l2sink->crop_fields_set,
v4l2sink->crop.top, v4l2sink->crop.left,
v4l2sink->crop.width, v4l2sink->crop.height);
if (v4l2sink->crop_fields_set & RECT_TOP_SET)
crop.c.top = v4l2sink->crop.top;
if (v4l2sink->crop_fields_set & RECT_LEFT_SET)
crop.c.left = v4l2sink->crop.left;
if (v4l2sink->crop_fields_set & RECT_WIDTH_SET)
crop.c.width = v4l2sink->crop.width;
if (v4l2sink->crop_fields_set & RECT_HEIGHT_SET)
crop.c.height = v4l2sink->crop.height;
if (obj->ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_S_CROP failed");
return;
}
if (obj->ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_G_CROP failed");
return;
}
v4l2sink->crop_fields_set = 0;
v4l2sink->crop = crop.c;
}
}
static void
gst_v4l2sink_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (object);
if (!gst_v4l2_object_set_property_helper (v4l2sink->v4l2object,
prop_id, value, pspec)) {
switch (prop_id) {
case PROP_OVERLAY_TOP:
v4l2sink->overlay.top = g_value_get_int (value);
v4l2sink->overlay_fields_set |= RECT_TOP_SET;
gst_v4l2sink_sync_overlay_fields (v4l2sink);
break;
case PROP_OVERLAY_LEFT:
v4l2sink->overlay.left = g_value_get_int (value);
v4l2sink->overlay_fields_set |= RECT_LEFT_SET;
gst_v4l2sink_sync_overlay_fields (v4l2sink);
break;
case PROP_OVERLAY_WIDTH:
v4l2sink->overlay.width = g_value_get_uint (value);
v4l2sink->overlay_fields_set |= RECT_WIDTH_SET;
gst_v4l2sink_sync_overlay_fields (v4l2sink);
break;
case PROP_OVERLAY_HEIGHT:
v4l2sink->overlay.height = g_value_get_uint (value);
v4l2sink->overlay_fields_set |= RECT_HEIGHT_SET;
gst_v4l2sink_sync_overlay_fields (v4l2sink);
break;
case PROP_CROP_TOP:
v4l2sink->crop.top = g_value_get_int (value);
v4l2sink->crop_fields_set |= RECT_TOP_SET;
gst_v4l2sink_sync_crop_fields (v4l2sink);
break;
case PROP_CROP_LEFT:
v4l2sink->crop.left = g_value_get_int (value);
v4l2sink->crop_fields_set |= RECT_LEFT_SET;
gst_v4l2sink_sync_crop_fields (v4l2sink);
break;
case PROP_CROP_WIDTH:
v4l2sink->crop.width = g_value_get_uint (value);
v4l2sink->crop_fields_set |= RECT_WIDTH_SET;
gst_v4l2sink_sync_crop_fields (v4l2sink);
break;
case PROP_CROP_HEIGHT:
v4l2sink->crop.height = g_value_get_uint (value);
v4l2sink->crop_fields_set |= RECT_HEIGHT_SET;
gst_v4l2sink_sync_crop_fields (v4l2sink);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
}
static void
gst_v4l2sink_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (object);
if (!gst_v4l2_object_get_property_helper (v4l2sink->v4l2object,
prop_id, value, pspec)) {
switch (prop_id) {
case PROP_OVERLAY_TOP:
g_value_set_int (value, v4l2sink->overlay.top);
break;
case PROP_OVERLAY_LEFT:
g_value_set_int (value, v4l2sink->overlay.left);
break;
case PROP_OVERLAY_WIDTH:
g_value_set_uint (value, v4l2sink->overlay.width);
break;
case PROP_OVERLAY_HEIGHT:
g_value_set_uint (value, v4l2sink->overlay.height);
break;
case PROP_CROP_TOP:
g_value_set_int (value, v4l2sink->crop.top);
break;
case PROP_CROP_LEFT:
g_value_set_int (value, v4l2sink->crop.left);
break;
case PROP_CROP_WIDTH:
g_value_set_uint (value, v4l2sink->crop.width);
break;
case PROP_CROP_HEIGHT:
g_value_set_uint (value, v4l2sink->crop.height);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
}
static GstStateChangeReturn
gst_v4l2sink_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstV4l2Sink *v4l2sink = GST_V4L2SINK (element);
GST_DEBUG_OBJECT (v4l2sink, "%d -> %d",
GST_STATE_TRANSITION_CURRENT (transition),
GST_STATE_TRANSITION_NEXT (transition));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
/* open the device */
if (!gst_v4l2_object_open (v4l2sink->v4l2object))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (!gst_v4l2_object_stop (v4l2sink->v4l2object))
return GST_STATE_CHANGE_FAILURE;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
/* we need to call stop here too */
if (!gst_v4l2_object_stop (v4l2sink->v4l2object))
return GST_STATE_CHANGE_FAILURE;
/* close the device */
if (!gst_v4l2_object_close (v4l2sink->v4l2object))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
return ret;
}
static GstCaps *
gst_v4l2sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
/* FIXME: copy? */
GST_DEBUG_OBJECT (v4l2sink, "device is not open");
return gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (v4l2sink));
}
return gst_v4l2_object_get_caps (v4l2sink->v4l2object, filter);
}
static gboolean
gst_v4l2sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstV4l2Error error = GST_V4L2_ERROR_INIT;
GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
GstV4l2Object *obj = v4l2sink->v4l2object;
GST_DEBUG_OBJECT (v4l2sink, "caps: %" GST_PTR_FORMAT, caps);
if (!GST_V4L2_IS_OPEN (obj)) {
GST_DEBUG_OBJECT (v4l2sink, "device is not open");
return FALSE;
}
/* make sure the caps changed before doing anything */
if (gst_v4l2_object_caps_equal (obj, caps))
return TRUE;
if (!gst_v4l2_object_stop (obj))
goto stop_failed;
if (!gst_v4l2_object_set_format (obj, caps, &error))
goto invalid_format;
gst_v4l2sink_sync_overlay_fields (v4l2sink);
gst_v4l2sink_sync_crop_fields (v4l2sink);
GST_INFO_OBJECT (v4l2sink, "outputting buffers via mode %u", obj->mode);
v4l2sink->video_width = GST_V4L2_WIDTH (obj);
v4l2sink->video_height = GST_V4L2_HEIGHT (obj);
/* TODO: videosink width/height should be scaled according to
* pixel-aspect-ratio
*/
GST_VIDEO_SINK_WIDTH (v4l2sink) = v4l2sink->video_width;
GST_VIDEO_SINK_HEIGHT (v4l2sink) = v4l2sink->video_height;
return TRUE;
/* ERRORS */
stop_failed:
{
GST_DEBUG_OBJECT (v4l2sink, "failed to stop streaming");
return FALSE;
}
invalid_format:
{
/* error already posted */
gst_v4l2_error (v4l2sink, &error);
GST_DEBUG_OBJECT (v4l2sink, "can't set format");
return FALSE;
}
}
static gboolean
gst_v4l2sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
gboolean last_sample_enabled;
if (!gst_v4l2_object_propose_allocation (v4l2sink->v4l2object, query))
return FALSE;
g_object_get (bsink, "enable-last-sample", &last_sample_enabled, NULL);
if (last_sample_enabled) {
GstBufferPool *pool;
guint size, min, max;
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
/* we need 1 more, otherwise we'll run out of buffers at preroll */
min++;
if (max < min)
max = min;
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
gst_object_unref (pool);
}
return TRUE;
}
/* called after A/V sync to render frame */
static GstFlowReturn
gst_v4l2sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
{
GstFlowReturn ret;
GstV4l2Sink *v4l2sink = GST_V4L2SINK (vsink);
GstV4l2Object *obj = v4l2sink->v4l2object;
GstBufferPool *bpool = GST_BUFFER_POOL (obj->pool);
GST_DEBUG_OBJECT (v4l2sink, "render buffer: %p", buf);
if (G_UNLIKELY (obj->pool == NULL))
goto not_negotiated;
if (G_UNLIKELY (!gst_buffer_pool_is_active (bpool))) {
GstStructure *config;
/* this pool was not activated, configure and activate */
GST_DEBUG_OBJECT (v4l2sink, "activating pool");
config = gst_buffer_pool_get_config (bpool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_set_config (bpool, config);
if (!gst_buffer_pool_set_active (bpool, TRUE))
goto activate_failed;
}
gst_buffer_ref (buf);
again:
ret = gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL_CAST (obj->pool),
&buf);
if (ret == GST_FLOW_FLUSHING) {
ret = gst_base_sink_wait_preroll (GST_BASE_SINK (vsink));
if (ret == GST_FLOW_OK)
goto again;
}
gst_buffer_unref (buf);
return ret;
/* ERRORS */
not_negotiated:
{
GST_ERROR_OBJECT (v4l2sink, "not negotiated");
return GST_FLOW_NOT_NEGOTIATED;
}
activate_failed:
{
GST_ELEMENT_ERROR (v4l2sink, RESOURCE, SETTINGS,
(_("Failed to allocated required memory.")),
("Buffer pool activation failed"));
return GST_FLOW_ERROR;
}
}
static gboolean
gst_v4l2sink_unlock (GstBaseSink * sink)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (sink);
return gst_v4l2_object_unlock (v4l2sink->v4l2object);
}
static gboolean
gst_v4l2sink_unlock_stop (GstBaseSink * sink)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (sink);
return gst_v4l2_object_unlock_stop (v4l2sink->v4l2object);
}