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glimagesink: Create GL context and set up window from the streaming thread

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gst_gl_context_create() might need to dispatch some operations to the
application's main thread, and calling this in the change_state function
can cause deadlocks.
This commit is contained in:
Sebastian Dröge 2014-04-06 11:57:12 +02:00
parent 26d6151ea1
commit 82b7c915bb
1 changed files with 31 additions and 46 deletions
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77
ext/gl/gstglimagesink.c
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@ -405,10 +405,35 @@ _ensure_gl_setup (GstGLImageSink * gl_sink)
return FALSE;
if (!gl_sink->context) {
GstGLWindow *window;
gl_sink->context = gst_gl_context_new (gl_sink->display);
if (!gst_gl_context_create (gl_sink->context, gl_sink->other_context,
&error))
goto context_error;
window = gst_gl_context_get_window (gl_sink->context);
if (!gl_sink->window_id && !gl_sink->new_window_id)
gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (gl_sink));
if (gl_sink->window_id != gl_sink->new_window_id) {
gl_sink->window_id = gl_sink->new_window_id;
gst_gl_window_set_window_handle (window, gl_sink->window_id);
}
/* setup callbacks */
gst_gl_window_set_resize_callback (window,
GST_GL_WINDOW_RESIZE_CB (gst_glimage_sink_on_resize),
gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref);
gst_gl_window_set_draw_callback (window,
GST_GL_WINDOW_CB (gst_glimage_sink_on_draw),
gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref);
gst_gl_window_set_close_callback (window,
GST_GL_WINDOW_CB (gst_glimage_sink_on_close),
gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref);
gst_object_unref (window);
}
if (!gl_sink->upload) {
@ -507,51 +532,8 @@ gst_glimage_sink_change_state (GstElement * element, GstStateChange transition)
case GST_STATE_CHANGE_READY_TO_PAUSED:
g_atomic_int_set (&glimage_sink->to_quit, 0);
if (!glimage_sink->display) {
GstGLWindow *window;
GError *error = NULL;
if (!gst_gl_ensure_display (glimage_sink, &glimage_sink->display))
return GST_STATE_CHANGE_FAILURE;
glimage_sink->context = gst_gl_context_new (glimage_sink->display);
window = gst_gl_context_get_window (glimage_sink->context);
if (!glimage_sink->window_id && !glimage_sink->new_window_id)
gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY
(glimage_sink));
if (glimage_sink->window_id != glimage_sink->new_window_id) {
glimage_sink->window_id = glimage_sink->new_window_id;
gst_gl_window_set_window_handle (window, glimage_sink->window_id);
}
if (!gst_gl_context_create (glimage_sink->context,
glimage_sink->other_context, &error)) {
GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND, ("%s",
error->message), (NULL));
if (glimage_sink->display) {
gst_object_unref (glimage_sink->display);
glimage_sink->display = NULL;
}
gst_object_unref (glimage_sink->context);
gst_object_unref (window);
return GST_STATE_CHANGE_FAILURE;
}
/* setup callbacks */
gst_gl_window_set_resize_callback (window,
GST_GL_WINDOW_RESIZE_CB (gst_glimage_sink_on_resize),
gst_object_ref (glimage_sink), (GDestroyNotify) gst_object_unref);
gst_gl_window_set_draw_callback (window,
GST_GL_WINDOW_CB (gst_glimage_sink_on_draw),
gst_object_ref (glimage_sink), (GDestroyNotify) gst_object_unref);
gst_gl_window_set_close_callback (window,
GST_GL_WINDOW_CB (gst_glimage_sink_on_close),
gst_object_ref (glimage_sink), (GDestroyNotify) gst_object_unref);
gst_object_unref (window);
}
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
@ -669,9 +651,6 @@ gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
if (glimage_sink->tex_id)
gst_gl_context_del_texture (glimage_sink->context, &glimage_sink->tex_id);
//FIXME: this texture seems to be never deleted when going to STATE_NULL
gst_gl_context_gen_texture (glimage_sink->context, &glimage_sink->tex_id,
GST_VIDEO_INFO_FORMAT (&vinfo), width, height);
par_n = GST_VIDEO_INFO_PAR_N (&vinfo);
par_d = GST_VIDEO_INFO_PAR_D (&vinfo);
@ -720,6 +699,12 @@ gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
GST_VIDEO_SINK_HEIGHT (glimage_sink));
glimage_sink->info = vinfo;
if (!_ensure_gl_setup (glimage_sink))
return FALSE;
//FIXME: this texture seems to be never deleted when going to STATE_NULL
gst_gl_context_gen_texture (glimage_sink->context, &glimage_sink->tex_id,
GST_VIDEO_INFO_FORMAT (&glimage_sink->info), width, height);
newpool = gst_gl_buffer_pool_new (glimage_sink->context);
structure = gst_buffer_pool_get_config (newpool);