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vaapisink: retain VA surface until another one is displayed.

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Keep VA surface proxy associated with the surface that is currently
being displayed. This makes sure that surface is not released back
to the pool of surfaces free to use for decoding. This is necessary
with VA driver implementations that support rendering to an overlay
pipe. Otherwise, there could be cases where we are decoding into a
surface that is being displayed, hence some flickering.
This commit is contained in:
Gwenole Beauchesne 2012-08-24 16:30:33 +03:00
parent ab8b0359e1
commit e36fb69ef9
2 changed files with 10 additions and 1 deletions
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10
gst/vaapi/gstvaapisink.c
View file

@ -223,6 +223,7 @@ gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
static void
gst_vaapisink_destroy(GstVaapiSink *sink)
{
gst_buffer_replace(&sink->video_buffer, NULL);
g_clear_object(&sink->texture);
g_clear_object(&sink->display);
@ -468,6 +469,7 @@ gst_vaapisink_stop(GstBaseSink *base_sink)
{
GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
gst_buffer_replace(&sink->video_buffer, NULL);
g_clear_object(&sink->window);
g_clear_object(&sink->display);
@ -772,7 +774,12 @@ gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
success = FALSE;
break;
}
return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
if (!success)
return GST_FLOW_UNEXPECTED;
/* Retain VA surface until the next one is displayed */
gst_buffer_replace(&sink->video_buffer, buffer);
return GST_FLOW_OK;
}
static gboolean
@ -938,6 +945,7 @@ gst_vaapisink_init(GstVaapiSink *sink)
sink->window_width = 0;
sink->window_height = 0;
sink->texture = NULL;
sink->video_buffer = NULL;
sink->video_width = 0;
sink->video_height = 0;
sink->video_par_n = 1;

1
gst/vaapi/gstvaapisink.h
View file

@ -74,6 +74,7 @@ struct _GstVaapiSink {
guint window_width;
guint window_height;
GstVaapiTexture *texture;
GstBuffer *video_buffer;
guint video_width;
guint video_height;
gint video_par_n;