static void
gst_v4l2sink_init (GstV4l2Sink * v4l2sink, GstV4l2SinkClass * klass)
{
v4l2sink->v4l2object = gst_v4l2_object_new (GST_ELEMENT (v4l2sink),
V4L2_BUF_TYPE_VIDEO_OUTPUT, DEFAULT_PROP_DEVICE,
gst_v4l2_get_input, gst_v4l2_set_input, 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);
/* number of buffers requested */
v4l2sink->num_buffers = PROP_DEF_QUEUE_SIZE;
v4l2sink->probed_caps = NULL;
v4l2sink->current_caps = NULL;
v4l2sink->overlay_fields_set = 0;
v4l2sink->phys_base = 0x10000000;
v4l2sink->state = 0;
}
static void
gst_v4l2_transform_subinstance_init (GTypeInstance * instance, gpointer g_class)
{
GstV4l2TransformClass *klass = GST_V4L2_TRANSFORM_CLASS (g_class);
GstV4l2Transform *self = GST_V4L2_TRANSFORM (instance);
self->v4l2output = gst_v4l2_object_new (GST_ELEMENT (self),
V4L2_BUF_TYPE_VIDEO_OUTPUT, klass->default_device,
gst_v4l2_get_output, gst_v4l2_set_output, NULL);
self->v4l2output->no_initial_format = TRUE;
self->v4l2output->keep_aspect = FALSE;
self->v4l2capture = gst_v4l2_object_new (GST_ELEMENT (self),
V4L2_BUF_TYPE_VIDEO_CAPTURE, klass->default_device,
gst_v4l2_get_input, gst_v4l2_set_input, NULL);
self->v4l2capture->no_initial_format = TRUE;
self->v4l2output->keep_aspect = FALSE;
}
static void
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);
gst_base_src_set_format (GST_BASE_SRC (v4l2src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (v4l2src), TRUE);
}
static void
gst_v4l2_video_dec_subinstance_init (GTypeInstance * instance, gpointer g_class)
{
GstV4l2VideoDecClass *klass = GST_V4L2_VIDEO_DEC_CLASS (g_class);
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (instance);
GstVideoDecoder *decoder = GST_VIDEO_DECODER (instance);
gst_video_decoder_set_packetized (decoder, TRUE);
self->v4l2output = gst_v4l2_object_new (GST_ELEMENT (self),
V4L2_BUF_TYPE_VIDEO_OUTPUT, klass->default_device,
gst_v4l2_get_output, gst_v4l2_set_output, NULL);
self->v4l2output->no_initial_format = TRUE;
self->v4l2output->keep_aspect = FALSE;
self->v4l2capture = gst_v4l2_object_new (GST_ELEMENT (self),
V4L2_BUF_TYPE_VIDEO_CAPTURE, klass->default_device,
gst_v4l2_get_input, gst_v4l2_set_input, NULL);
self->v4l2capture->no_initial_format = TRUE;
self->v4l2output->keep_aspect = FALSE;
}
static void
gst_v4l2sink_init (GstV4l2Sink * v4l2sink)
{
v4l2sink->v4l2object = gst_v4l2_object_new (GST_ELEMENT (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_v4l2src_init (GstV4l2Src * v4l2src, GstV4l2SrcClass * klass)
{
/* 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->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 GstV4l2Device *
gst_v4l2_device_provider_probe_device (GstV4l2DeviceProvider * provider,
const gchar * device_path, const gchar * device_name, GstStructure * props)
{
GstV4l2Object *v4l2obj;
GstCaps *caps;
GstV4l2Device *device = NULL;
struct stat st;
GstV4l2DeviceType type = GST_V4L2_DEVICE_TYPE_INVALID;
g_return_val_if_fail (props != NULL, NULL);
if (stat (device_path, &st) == -1)
return NULL;
if (!S_ISCHR (st.st_mode))
return NULL;
v4l2obj = gst_v4l2_object_new ((GstElement *) provider,
V4L2_BUF_TYPE_VIDEO_CAPTURE, device_path, NULL, NULL, NULL);
if (!gst_v4l2_open (v4l2obj))
goto destroy;
gst_structure_set (props, "device.api", G_TYPE_STRING, "v4l2", NULL);
gst_structure_set (props, "device.path", G_TYPE_STRING, device_path, NULL);
gst_structure_set (props, "v4l2.device.driver", G_TYPE_STRING,
v4l2obj->vcap.driver, NULL);
gst_structure_set (props, "v4l2.device.card", G_TYPE_STRING,
v4l2obj->vcap.card, NULL);
gst_structure_set (props, "v4l2.device.bus_info", G_TYPE_STRING,
v4l2obj->vcap.bus_info, NULL);
gst_structure_set (props, "v4l2.device.version", G_TYPE_UINT,
v4l2obj->vcap.version, NULL);
gst_structure_set (props, "v4l2.device.capabilities", G_TYPE_UINT,
v4l2obj->vcap.capabilities, NULL);
gst_structure_set (props, "v4l2.device.device_caps", G_TYPE_UINT,
v4l2obj->vcap.device_caps, NULL);
if (v4l2obj->vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE)
type = GST_V4L2_DEVICE_TYPE_SOURCE;
if (v4l2obj->vcap.capabilities & V4L2_CAP_VIDEO_OUTPUT) {
/* Morph it in case our initial guess was wrong */
v4l2obj->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
if (type == GST_V4L2_DEVICE_TYPE_INVALID)
type = GST_V4L2_DEVICE_TYPE_SINK;
else
/* We ignore M2M devices that are both capture and output for now
* The provider is not for them
*/
goto close;
}
caps = gst_v4l2_object_get_caps (v4l2obj, NULL);
if (caps == NULL)
goto close;
if (gst_caps_is_empty (caps)) {
gst_caps_unref (caps);
goto close;
}
device = gst_v4l2_device_new (device_path,
device_name ? device_name : (gchar *) v4l2obj->vcap.card, caps, type,
props);
gst_caps_unref (caps);
close:
gst_v4l2_close (v4l2obj);
destroy:
gst_v4l2_object_destroy (v4l2obj);
if (props)
gst_structure_free (props);
return device;
}
