static void
gst_v4l2sink_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GstV4l2SinkClass *gstv4l2sink_class = GST_V4L2SINK_CLASS (g_class);
gstv4l2sink_class->v4l2_class_devices = NULL;
GST_DEBUG_CATEGORY_INIT (v4l2sink_debug, "v4l2sink", 0, "V4L2 sink element");
gst_element_class_set_details (gstelement_class, &gst_v4l2sink_details);
gst_element_class_add_pad_template
(gstelement_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_v4l2_object_get_all_caps ()));
}
static void
gst_v4l2sink_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GstV4l2SinkClass *gstv4l2sink_class = GST_V4L2SINK_CLASS (g_class);
gstv4l2sink_class->v4l2_class_devices = NULL;
GST_DEBUG_CATEGORY_INIT (v4l2sink_debug, "v4l2sink", 0, "V4L2 sink element");
gst_element_class_set_details_simple (gstelement_class,
"Video (video4linux2) Sink", "Sink/Video",
"Displays frames on a video4linux2 device", "Rob Clark <*****@*****.**>,");
gst_element_class_add_pad_template
(gstelement_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_v4l2_object_get_all_caps ()));
}
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 <*****@*****.**>,"
" Stefan Kost <*****@*****.**>");
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)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseSrcClass *basesrc_class;
GstPushSrcClass *pushsrc_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
basesrc_class = GST_BASE_SRC_CLASS (klass);
pushsrc_class = GST_PUSH_SRC_CLASS (klass);
gobject_class->finalize = (GObjectFinalizeFunc) gst_v4l2src_finalize;
gobject_class->set_property = gst_v4l2src_set_property;
gobject_class->get_property = gst_v4l2src_get_property;
element_class->change_state = gst_v4l2src_change_state;
gst_v4l2_object_install_properties_helper (gobject_class,
DEFAULT_PROP_DEVICE);
/**
* GstV4l2Src::prepare-format:
* @v4l2src: the v4l2src instance
* @fd: the file descriptor of the current device
* @caps: the caps of the format being set
*
* This signal gets emitted before calling the v4l2 VIDIOC_S_FMT ioctl
* (set format). This allows for any custom configuration of the device to
* happen prior to the format being set.
* This is mostly useful for UVC H264 encoding cameras which need the H264
* Probe & Commit to happen prior to the normal Probe & Commit.
*
* Since: 0.10.32
*/
gst_v4l2_signals[SIGNAL_PRE_SET_FORMAT] = g_signal_new ("prepare-format",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_INT, GST_TYPE_CAPS);
gst_element_class_set_static_metadata (element_class,
"Video (video4linux2) Source", "Source/Video",
"Reads frames from a Video4Linux2 device",
"Edgard Lima <*****@*****.**>, "
"Stefan Kost <*****@*****.**>");
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->unlock = GST_DEBUG_FUNCPTR (gst_v4l2src_unlock);
basesrc_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_v4l2src_unlock_stop);
basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_v4l2src_stop);
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->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_v4l2sink_class_init (GstV4l2SinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseSinkClass *basesink_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
basesink_class = GST_BASE_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 <*****@*****.**>,");
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->render = GST_DEBUG_FUNCPTR (gst_v4l2sink_show_frame);
klass->v4l2_class_devices = NULL;
GST_DEBUG_CATEGORY_INIT (v4l2sink_debug, "v4l2sink", 0, "V4L2 sink element");
}
