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glmixer: don't add rgba templates by default

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Subclasses may want to override the pad template with different formats
or with a different pad subclass.

The original beahviour is still available by calling
gst_gl_mixer_class_add_rgba_pad_templates() in _class_init() of the
subclass.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4608>
This commit is contained in:
Matthew Waters 2023-05-11 17:41:24 +10:00 committed by GStreamer Marge Bot
parent fc85b63c2b
commit e9bf1c79cc
4 changed files with 26 additions and 6 deletions
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1
subprojects/gst-plugins-base/ext/gl/gstglmosaic.c
View file

@ -137,6 +137,7 @@ gst_gl_mosaic_class_init (GstGLMosaicClass * klass)
GST_GL_BASE_MIXER_CLASS (klass)->gl_stop = gst_gl_mosaic_gl_stop;
GST_GL_MIXER_CLASS (klass)->process_textures = gst_gl_mosaic_process_textures;
gst_gl_mixer_class_add_rgba_pad_templates (GST_GL_MIXER_CLASS (klass));
}
static void

1
subprojects/gst-plugins-base/ext/gl/gstglvideomixer.c
View file

@ -1303,6 +1303,7 @@ gst_gl_video_mixer_class_init (GstGLVideoMixerClass * klass)
"Filter/Effect/Video/Compositor", "OpenGL video_mixer",
"Matthew Waters <matthew@centricular.com>");
gst_gl_mixer_class_add_rgba_pad_templates (GST_GL_MIXER_CLASS (klass));
gst_element_class_add_static_pad_template_with_gtype (element_class,
&sink_factory, GST_TYPE_GL_VIDEO_MIXER_PAD);

27
subprojects/gst-plugins-base/gst-libs/gst/gl/gstglmixer.c
View file

@ -413,11 +413,31 @@ static void gst_gl_mixer_gl_stop (GstGLBaseMixer * mix);
static void gst_gl_mixer_finalize (GObject * object);
/**
* gst_gl_mixer_class_add_rgba_pad_templates:
* @klass: the #GstGLMixerClass
*
* Adds the default RGBA pad templates to this class. If you have any special
* template requirements like a different pad subclass or different supported
* caps, you should not call this function and add the pad templates yourself
* manually.
*
* Since: 1.24
*/
void
gst_gl_mixer_class_add_rgba_pad_templates (GstGLMixerClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_static_pad_template_with_gtype (element_class,
&src_factory, GST_TYPE_AGGREGATOR_PAD);
gst_element_class_add_static_pad_template_with_gtype (element_class,
&sink_factory, GST_TYPE_GL_MIXER_PAD);
}
static void
gst_gl_mixer_class_init (GstGLMixerClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoAggregatorClass *videoaggregator_class =
(GstVideoAggregatorClass *) klass;
GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
@ -430,11 +450,6 @@ gst_gl_mixer_class_init (GstGLMixerClass * klass)
gobject_class->get_property = gst_gl_mixer_get_property;
gobject_class->set_property = gst_gl_mixer_set_property;
gst_element_class_add_static_pad_template_with_gtype (element_class,
&src_factory, GST_TYPE_AGGREGATOR_PAD);
gst_element_class_add_static_pad_template_with_gtype (element_class,
&sink_factory, GST_TYPE_GL_MIXER_PAD);
agg_class->sink_query = gst_gl_mixer_sink_query;
agg_class->src_query = gst_gl_mixer_src_query;
agg_class->stop = gst_gl_mixer_stop;

3
subprojects/gst-plugins-base/gst-libs/gst/gl/gstglmixer.h
View file

@ -101,6 +101,9 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstGLMixer, gst_object_unref);
GST_GL_API
GType gst_gl_mixer_get_type(void);
GST_GL_API
void gst_gl_mixer_class_add_rgba_pad_templates (GstGLMixerClass * klass);
GST_GL_API
gboolean gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf);