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gl: retreive the gldisplay/app gl context as soon as possible

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fixes the usage of gst_gl_display_filter_gl_api
This commit is contained in:
Matthew Waters 2015-03-13 09:38:54 +00:00
parent f19b8f7665
commit b0ee70e77a
1 changed files with 38 additions and 0 deletions
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38
ext/gl/gstglbasemixer.c
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@ -45,6 +45,8 @@ static void gst_gl_base_mixer_pad_finalize (GObject * object);
static void gst_gl_base_mixer_set_context (GstElement * element,
GstContext * context);
static GstStateChangeReturn gst_gl_base_mixer_change_state (GstElement *
element, GstStateChange transition);
enum
{
@ -280,6 +282,7 @@ gst_gl_base_mixer_class_init (GstGLBaseMixerClass * klass)
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_gl_base_mixer_set_context);
element_class->change_state = gst_gl_base_mixer_change_state;
agg_class->sinkpads_type = GST_TYPE_GL_BASE_MIXER_PAD;
agg_class->sink_query = gst_gl_base_mixer_sink_query;
@ -692,3 +695,38 @@ gst_gl_base_mixer_stop (GstAggregator * agg)
return TRUE;
}
static GstStateChangeReturn
gst_gl_base_mixer_change_state (GstElement * element, GstStateChange transition)
{
GstGLBaseMixer *mix = GST_GL_BASE_MIXER (element);
GstGLBaseMixerClass *mix_class = GST_GL_BASE_MIXER_GET_CLASS (mix);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GST_DEBUG_OBJECT (mix, "changing state: %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_gl_ensure_element_data (element, &mix->display,
&mix->priv->other_context))
return GST_STATE_CHANGE_FAILURE;
gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
default:
break;
}
return ret;
}