static gboolean
_gst_gl_sync_meta_transform (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
{
GstGLSyncMeta *dmeta, *smeta;
smeta = (GstGLSyncMeta *) meta;
if (GST_META_TRANSFORM_IS_COPY (type)) {
GstMetaTransformCopy *copy = data;
if (!copy->region) {
/* only copy if the complete data is copied as well */
dmeta = gst_buffer_add_gl_sync_meta (smeta->context, dest);
if (!dmeta)
return FALSE;
GST_LOG ("copy sync object %p from meta %p to %p", smeta->glsync,
smeta, dmeta);
/* Setting a sync point here relies on GstBuffer copying
* metas after data */
gst_gl_sync_meta_set_sync_point (dmeta, smeta->context);
}
} else {
/* return FALSE, if transform type is not supported */
return FALSE;
}
return TRUE;
}
static void
_default_copy (GstGLSyncMeta * src, GstBuffer * sbuffer, GstGLSyncMeta * dest,
GstBuffer * dbuffer)
{
GST_LOG ("copy sync object %p from meta %p to %p", src->data, src, dest);
/* Setting a sync point here relies on GstBuffer copying
* metas after data */
gst_gl_sync_meta_set_sync_point (src, src->context);
}
static GstFlowReturn
gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
{
gboolean res = FALSE;
GstGLMixer *mix = GST_GL_MIXER (vagg);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
GstGLSyncMeta *sync_meta;
if (mix_class->process_buffers)
res = gst_gl_mixer_process_buffers (mix, outbuf);
else if (mix_class->process_textures)
res = gst_gl_mixer_process_textures (mix, outbuf);
sync_meta = gst_buffer_get_gl_sync_meta (outbuf);
if (sync_meta)
gst_gl_sync_meta_set_sync_point (sync_meta, mix->context);
return res ? GST_FLOW_OK : GST_FLOW_ERROR;
}
static GstFlowReturn
gst_gl_test_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
{
GstGLTestSrc *src = GST_GL_TEST_SRC (psrc);
GstClockTime next_time;
GstVideoFrame out_frame;
GstGLSyncMeta *sync_meta;
if (G_UNLIKELY (!src->negotiated || !src->context))
goto not_negotiated;
/* 0 framerate and we are at the second frame, eos */
if (G_UNLIKELY (GST_VIDEO_INFO_FPS_N (&src->out_info) == 0
&& src->n_frames == 1))
goto eos;
if (!gst_video_frame_map (&out_frame, &src->out_info, buffer,
GST_MAP_WRITE | GST_MAP_GL)) {
return GST_FLOW_NOT_NEGOTIATED;
}
src->out_tex = (GstGLMemory *) out_frame.map[0].memory;
gst_gl_context_thread_add (src->context, (GstGLContextThreadFunc) _fill_gl,
src);
if (!src->gl_result) {
gst_video_frame_unmap (&out_frame);
goto gl_error;
}
gst_video_frame_unmap (&out_frame);
if (!src->gl_result)
goto gl_error;
sync_meta = gst_buffer_get_gl_sync_meta (buffer);
if (sync_meta)
gst_gl_sync_meta_set_sync_point (sync_meta, src->context);
GST_BUFFER_TIMESTAMP (buffer) = src->timestamp_offset + src->running_time;
GST_BUFFER_OFFSET (buffer) = src->n_frames;
src->n_frames++;
GST_BUFFER_OFFSET_END (buffer) = src->n_frames;
if (src->out_info.fps_n) {
next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->out_info.fps_d, src->out_info.fps_n);
GST_BUFFER_DURATION (buffer) = next_time - src->running_time;
} else {
next_time = src->timestamp_offset;
/* NONE means forever */
GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
}
src->running_time = next_time;
return GST_FLOW_OK;
gl_error:
{
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (_("failed to draw pattern")),
(_("A GL error occured")));
return GST_FLOW_NOT_NEGOTIATED;
}
not_negotiated:
{
GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
(_("format wasn't negotiated before get function")));
return GST_FLOW_NOT_NEGOTIATED;
}
eos:
{
GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames);
return GST_FLOW_EOS;
}
}
