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applemedia: avfvideosrc: optionally get the GL context from gst_element_set_context

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Allow setting the GL context with gst_element_set_context. When available, the
local context obtained via the context query still has the precedence.
This commit is contained in:
Alessandro Decina 2016-01-12 14:36:02 +11:00
parent 45b40b8467
commit 05ccc2f6ea
1 changed files with 29 additions and 3 deletions
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32
sys/applemedia/avfvideosrc.m
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@ -753,7 +753,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
GstCapsFeatures *features = gst_caps_get_features (caps, 0); GstCapsFeatures *features = gst_caps_get_features (caps, 0);
if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) { if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) {
GstGLContext *context = query_gl_context (GST_BASE_SRC_PAD (baseSrc)); GstGLContext *context = find_gl_context (element);
textureCache = gst_video_texture_cache_new (context); textureCache = gst_video_texture_cache_new (context);
gst_video_texture_cache_set_format (textureCache, format, caps); gst_video_texture_cache_set_format (textureCache, format, caps);
gst_object_unref (context); gst_object_unref (context);
@ -964,7 +964,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
} }
static GstGLContext * static GstGLContext *
query_gl_context (GstPad *srcpad) query_gl_local_context (GstPad *srcpad)
{ {
GstGLContext *gl_context = NULL; GstGLContext *gl_context = NULL;
GstContext *context = NULL; GstContext *context = NULL;
@ -983,6 +983,32 @@ query_gl_context (GstPad *srcpad)
return gl_context; return gl_context;
} }
static GstGLContext *
find_gl_app_context (GstElement *element)
{
GstGLContext *gl_context = NULL;
GstContext *context = gst_element_get_context (element, "gst.gl.app_context");
if (context) {
const GstStructure *s = gst_context_get_structure (context);
gst_structure_get (s, "context", GST_GL_TYPE_CONTEXT, &gl_context, NULL);
gst_context_unref (context);
}
return gl_context;
}
static GstGLContext *
find_gl_context (GstElement *element)
{
GstGLContext *gl_context = NULL;
gl_context = query_gl_local_context (GST_BASE_SRC_PAD (element));
if (!gl_context)
gl_context = find_gl_app_context (element);
return gl_context;
}
static gboolean static gboolean
caps_filter_out_gl_memory (GstCapsFeatures * features, GstStructure * structure, caps_filter_out_gl_memory (GstCapsFeatures * features, GstStructure * structure,
gpointer user_data) gpointer user_data)
@ -999,7 +1025,7 @@ caps_filter_out_gl_memory (GstCapsFeatures * features, GstStructure * structure,
new_caps = gst_caps_make_writable (new_caps); new_caps = gst_caps_make_writable (new_caps);
context = query_gl_context (GST_BASE_SRC_PAD (baseSrc)); context = find_gl_context (element);
if (!context) if (!context)
gst_caps_filter_and_map_in_place (new_caps, caps_filter_out_gl_memory, NULL); gst_caps_filter_and_map_in_place (new_caps, caps_filter_out_gl_memory, NULL);
else else