/* Called after videoaggregator fixates our caps */
static gboolean
_negotiated_caps (GstVideoAggregator * vagg, GstCaps * caps)
{
GstGLStereoMix *mix = GST_GL_STEREO_MIX (vagg);
GstCaps *in_caps;
GST_LOG_OBJECT (mix, "Configured output caps %" GST_PTR_FORMAT, caps);
if (GST_VIDEO_AGGREGATOR_CLASS (parent_class)->negotiated_caps)
if (!GST_VIDEO_AGGREGATOR_CLASS (parent_class)->negotiated_caps (vagg,
caps))
return FALSE;
/* Update the glview_convert output */
if (!gst_video_info_from_caps (&mix->out_info, caps))
return FALSE;
/* We can configure the view_converter now */
gst_gl_view_convert_set_context (mix->viewconvert,
GST_GL_BASE_MIXER (mix)->context);
in_caps = gst_video_info_to_caps (&mix->mix_info);
gst_caps_set_features (in_caps, 0,
gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY));
gst_caps_set_simple (in_caps, "texture-target", G_TYPE_STRING,
GST_GL_TEXTURE_TARGET_2D_STR, NULL);
gst_gl_view_convert_set_caps (mix->viewconvert, in_caps, caps);
return TRUE;
}
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
{
GstGLVideoMixer *mix = GST_GL_VIDEO_MIXER (vagg);
GList *l;
gint best_width = -1, best_height = -1;
GstVideoInfo info;
GstCaps *ret = NULL;
int i;
caps = gst_caps_make_writable (caps);
gst_video_info_from_caps (&info, caps);
GST_OBJECT_LOCK (vagg);
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
GstVideoAggregatorPad *vaggpad = l->data;
GstGLVideoMixerPad *mixer_pad = GST_GL_VIDEO_MIXER_PAD (vaggpad);
gint this_width, this_height;
gint width, height;
_mixer_pad_get_output_size (mix, mixer_pad, &width, &height);
if (width == 0 || height == 0)
continue;
this_width = width + MAX (mixer_pad->xpos, 0);
this_height = height + MAX (mixer_pad->ypos, 0);
if (best_width < this_width)
best_width = this_width;
if (best_height < this_height)
best_height = this_height;
}
GST_OBJECT_UNLOCK (vagg);
ret =
GST_VIDEO_AGGREGATOR_CLASS (gst_gl_video_mixer_parent_class)->update_caps
(vagg, caps);
for (i = 0; i < gst_caps_get_size (ret); i++) {
GstStructure *s = gst_caps_get_structure (ret, i);
gst_structure_set (s, "width", G_TYPE_INT, best_width, "height", G_TYPE_INT,
best_height, NULL);
}
return ret;
}
