mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 20:21:24 +00:00
Code Issues 1 Projects Releases Wiki Activity

glimagesink: correctly use the sync meta across multiple contexts

Browse source 
1. Set the sync point after the (possible) upload has occured
2. Wait in the correct GL context (the draw context)

Note: We don't add the GL sync meta to the input buffer as it's not
writable and a copy would be expensive.
This commit is contained in:
Matthew Waters 2015-05-19 16:22:00 +10:00
parent 2e58daf196
commit 6a2d12bf47
2 changed files with 36 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
ext/gl/gstglimagesink.c
View file

@ -832,6 +832,7 @@ gst_glimage_sink_query (GstBaseSink * bsink, GstQuery * query)
gst_buffer_unref (buf);
gst_buffer_replace (&glimage_sink->next_buffer, NULL);
gst_buffer_replace (&glimage_sink->next_sync, NULL);
res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
break;
@ -901,13 +902,18 @@ gst_glimage_sink_change_state (GstElement * element, GstStateChange transition)
* to avoid drawing
*/
GST_GLIMAGE_SINK_LOCK (glimage_sink);
if (glimage_sink->stored_sync)
gst_buffer_unref (glimage_sink->stored_sync);
glimage_sink->stored_sync = NULL;
glimage_sink->redisplay_texture = 0;
if (glimage_sink->stored_buffer) {
gst_buffer_unref (glimage_sink->stored_buffer);
glimage_sink->stored_buffer = NULL;
}
GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
gst_buffer_replace (&glimage_sink->next_buffer, NULL);
gst_buffer_replace (&glimage_sink->next_sync, NULL);
GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
glimage_sink->window_id = 0;
/* but do not reset glimage_sink->new_window_id */
@ -1095,6 +1101,8 @@ gst_glimage_sink_prepare (GstBaseSink * bsink, GstBuffer * buf)
{
GstGLImageSink *glimage_sink;
GstVideoFrame gl_frame;
GstBuffer *next_sync, *old_sync, *old_buffer;
GstGLSyncMeta *sync_meta;
glimage_sink = GST_GLIMAGE_SINK (bsink);
@ -1113,9 +1121,24 @@ gst_glimage_sink_prepare (GstBaseSink * bsink, GstBuffer * buf)
goto upload_failed;
}
next_sync = gst_buffer_new ();
sync_meta = gst_buffer_add_gl_sync_meta (glimage_sink->context, next_sync);
gst_gl_sync_meta_set_sync_point (sync_meta, glimage_sink->context);
GST_GLIMAGE_SINK_LOCK (glimage_sink);
glimage_sink->next_tex = *(guint *) gl_frame.data[0];
gst_buffer_replace (&glimage_sink->next_buffer, buf);
old_buffer = glimage_sink->next_buffer;
glimage_sink->next_buffer = gst_buffer_ref (buf);
old_sync = glimage_sink->next_sync;
glimage_sink->next_sync = next_sync;
GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
if (old_buffer)
gst_buffer_unref (old_buffer);
if (old_sync)
gst_buffer_unref (old_sync);
gst_video_frame_unmap (&gl_frame);
@ -1142,7 +1165,7 @@ static GstFlowReturn
gst_glimage_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
{
GstGLImageSink *glimage_sink;
GstBuffer *stored_buffer;
GstBuffer *stored_buffer, *old_sync;
GST_TRACE ("rendering buffer:%p", buf);
@ -1159,6 +1182,10 @@ gst_glimage_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
glimage_sink->redisplay_texture = glimage_sink->next_tex;
stored_buffer = glimage_sink->stored_buffer;
glimage_sink->stored_buffer = gst_buffer_ref (glimage_sink->next_buffer);
old_sync = glimage_sink->stored_sync;
glimage_sink->stored_sync = gst_buffer_ref (glimage_sink->next_sync);
GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
/* Ask the underlying window to redraw its content */
@ -1169,6 +1196,8 @@ gst_glimage_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
if (stored_buffer)
gst_buffer_unref (stored_buffer);
if (old_sync)
gst_buffer_unref (old_sync);
if (g_atomic_int_get (&glimage_sink->to_quit) != 0) {
GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND,
@ -1522,9 +1551,9 @@ gst_glimage_sink_on_draw (GstGLImageSink * gl_sink)
gl_sink->caps_change = FALSE;
}
sync_meta = gst_buffer_get_gl_sync_meta (gl_sink->stored_buffer);
sync_meta = gst_buffer_get_gl_sync_meta (gl_sink->stored_sync);
if (sync_meta)
gst_gl_sync_meta_wait (sync_meta, gl_sink->context);
gst_gl_sync_meta_wait (sync_meta, gst_gl_context_get_current ());
/* make sure that the environnement is clean */
gst_gl_context_clear_shader (gl_sink->context);

2
ext/gl/gstglimagesink.h
View file

@ -68,6 +68,7 @@ struct _GstGLImageSink
guint next_tex;
GstBuffer *next_buffer;
GstBuffer *next_sync;
volatile gint to_quit;
gboolean keep_aspect_ratio;
@ -78,6 +79,7 @@ struct _GstGLImageSink
/* avoid replacing the stored_buffer while drawing */
GMutex drawing_lock;
GstBuffer *stored_buffer;
GstBuffer *stored_sync;
GLuint redisplay_texture;
gboolean caps_change;