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glimagesink: wait on the correct sync meta when rendering

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This commit is contained in:
Matthew Waters 2015-11-16 15:46:41 +11:00 committed by Tim-Philipp Müller
parent 0e404ae3fc
commit 9fd665c90d
2 changed files with 22 additions and 9 deletions
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29
ext/gl/gstglimagesink.c
View file

@ -894,6 +894,7 @@ gst_glimage_sink_query (GstBaseSink * bsink, GstQuery * query)
buf[0] = glimage_sink->stored_buffer[0];
buf[1] = glimage_sink->stored_buffer[1];
glimage_sink->stored_buffer[0] = glimage_sink->stored_buffer[1] = NULL;
glimage_sink->stored_sync_meta = glimage_sink->next_sync_meta = NULL;
GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
gst_buffer_replace (buf, NULL);
@ -981,6 +982,7 @@ gst_glimage_sink_change_state (GstElement * element, GstStateChange transition)
buf[0] = glimage_sink->stored_buffer[0];
buf[1] = glimage_sink->stored_buffer[1];
glimage_sink->stored_buffer[0] = glimage_sink->stored_buffer[1] = NULL;
glimage_sink->stored_sync_meta = glimage_sink->next_sync_meta = NULL;
if (glimage_sink->stored_sync)
gst_buffer_unref (glimage_sink->stored_sync);
@ -1319,7 +1321,7 @@ prepare_next_buffer (GstGLImageSink * glimage_sink)
{
GstBuffer *in_buffer, *next_buffer, *old_buffer;
GstBuffer *in_buffer2 = NULL, *next_buffer2 = NULL, *old_buffer2;
GstBuffer *next_sync, *old_sync;
GstBuffer *next_sync = NULL, *old_sync;
GstGLSyncMeta *sync_meta;
GstVideoFrame gl_frame;
GstGLViewConvert *convert_views = NULL;
@ -1393,6 +1395,14 @@ prepare_next_buffer (GstGLImageSink * glimage_sink)
gst_gl_overlay_compositor_upload_overlays (glimage_sink->overlay_compositor,
next_buffer);
sync_meta = gst_buffer_get_gl_sync_meta (next_buffer);
if (!sync_meta) {
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);
}
/* in_buffer invalid now */
if (!gst_video_frame_map (&gl_frame, info, next_buffer,
GST_MAP_READ | GST_MAP_GL)) {
@ -1400,10 +1410,6 @@ prepare_next_buffer (GstGLImageSink * glimage_sink)
goto fail;
}
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];
@ -1414,6 +1420,7 @@ prepare_next_buffer (GstGLImageSink * glimage_sink)
old_sync = glimage_sink->next_sync;
glimage_sink->next_sync = next_sync;
glimage_sink->next_sync_meta = sync_meta;
/* Need to drop the lock again, to avoid a deadlock if we're
* dropping the last ref on this buffer and it goes back to our
@ -1973,9 +1980,9 @@ gst_glimage_sink_on_draw (GstGLImageSink * gl_sink)
GST_OBJECT_NAME (gl_sink), gl_sink->redisplay_texture);
GST_TRACE ("redrawing texture:%u", gl_sink->redisplay_texture);
sync_meta = gst_buffer_get_gl_sync_meta (gl_sink->stored_sync);
if (sync_meta)
gst_gl_sync_meta_wait (sync_meta, gst_gl_context_get_current ());
if (gl_sink->stored_sync_meta)
gst_gl_sync_meta_wait (gl_sink->stored_sync_meta,
gst_gl_context_get_current ());
/* make sure that the environnement is clean */
gst_gl_context_clear_shader (gl_sink->context);
@ -2133,7 +2140,11 @@ gst_glimage_sink_redisplay (GstGLImageSink * gl_sink)
gl_sink->stored_buffer[1] = NULL;
old_sync = gl_sink->stored_sync;
gl_sink->stored_sync = gst_buffer_ref (gl_sink->next_sync);
if (gl_sink->next_sync)
gl_sink->stored_sync = gst_buffer_ref (gl_sink->next_sync);
else
gl_sink->stored_sync = NULL;
gl_sink->stored_sync_meta = gl_sink->next_sync_meta;
GST_GLIMAGE_SINK_UNLOCK (gl_sink);
gst_buffer_replace (old_stored_buffer, NULL);

2
ext/gl/gstglimagesink.h
View file

@ -89,6 +89,7 @@ struct _GstGLImageSink
GstBuffer *next_buffer;
GstBuffer *next_buffer2; /* frame-by-frame 2nd view */
GstBuffer *next_sync;
GstGLSyncMeta *next_sync_meta;
volatile gint to_quit;
gboolean keep_aspect_ratio;
@ -98,6 +99,7 @@ struct _GstGLImageSink
GMutex drawing_lock;
GstBuffer *stored_buffer[2];
GstBuffer *stored_sync;
GstGLSyncMeta *stored_sync_meta;
GLuint redisplay_texture;
gboolean caps_change;