/**
* gst_video_buffer_set_overlay_composition:
* @buf: a #GstBuffer
* @comp: (allow-none): a #GstVideoOverlayComposition, or NULL to clear a
* previously-set composition
*
* Sets an overlay composition on a buffer. The buffer will obtain its own
* reference to the composition, meaning this function does not take ownership
* of @comp.
*
* Since: 0.10.36
*/
void
gst_video_buffer_set_overlay_composition (GstBuffer * buf,
GstVideoOverlayComposition * comp)
{
gst_buffer_set_qdata (buf, GST_OVERLAY_COMPOSITION_QUARK,
gst_structure_id_new (GST_OVERLAY_COMPOSITION_QUARK,
COMPOSITION_QUARK, GST_TYPE_VIDEO_OVERLAY_COMPOSITION, comp, NULL));
}
GstFlowReturn GStreamerReader::AllocateVideoBufferFull(GstPad* aPad,
guint64 aOffset,
guint aSize,
GstCaps* aCaps,
GstBuffer** aBuf,
nsRefPtr<PlanarYCbCrImage>& aImage)
{
/* allocate an image using the container */
ImageContainer* container = mDecoder->GetImageContainer();
ImageFormat format = PLANAR_YCBCR;
PlanarYCbCrImage* img = reinterpret_cast<PlanarYCbCrImage*>(container->CreateImage(&format, 1).get());
nsRefPtr<PlanarYCbCrImage> image = dont_AddRef(img);
/* prepare a GstBuffer pointing to the underlying PlanarYCbCrImage buffer */
GstBuffer* buf = gst_buffer_new();
GST_BUFFER_SIZE(buf) = aSize;
/* allocate the actual YUV buffer */
GST_BUFFER_DATA(buf) = image->AllocateAndGetNewBuffer(aSize);
aImage = image;
#if GST_VERSION_MICRO >= 36
/* create a GBoxed handle to hold the image */
BufferData* data = new BufferData(image);
/* store it in a GValue so we can put it in a GstStructure */
GValue value = {0,};
g_value_init(&value, buffer_data_get_type());
g_value_take_boxed(&value, data);
/* store the value in the structure */
GstStructure* structure = gst_structure_new("moz-reader-data", nullptr);
gst_structure_take_value(structure, "image", &value);
/* and attach the structure to the buffer */
gst_buffer_set_qdata(buf, g_quark_from_string("moz-reader-data"), structure);
#endif
*aBuf = buf;
return GST_FLOW_OK;
}
