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gl: store the list of contexts within gldisplay

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Removes the reliance on the allocation query to propogate GL contexts.

Allows thread safely getting a context for the a specific thread.
This commit is contained in:
Matthew Waters 2015-03-03 17:26:47 +11:00
parent acd9a252c0
commit f19b8f7665
1 changed files with 13 additions and 53 deletions
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66
ext/gl/gstglbasemixer.c
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@ -479,8 +479,6 @@ gst_gl_base_mixer_decide_allocation (GstGLBaseMixer * mix, GstQuery * query)
{
GstGLBaseMixerClass *mix_class = GST_GL_BASE_MIXER_GET_CLASS (mix);
GError *error = NULL;
guint idx;
GstGLContext *other_context = NULL;
gboolean ret = TRUE;
if (!gst_gl_ensure_element_data (mix, &mix->display,
@ -491,58 +489,20 @@ gst_gl_base_mixer_decide_allocation (GstGLBaseMixer * mix, GstQuery * query)
_find_local_gl_context (mix);
if (gst_query_find_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
GstGLContext *context;
const GstStructure *upload_meta_params;
gpointer handle;
gchar *type;
gchar *apis;
gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
if (upload_meta_params) {
if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
GstGLContext *old = mix->context;
mix->context = context;
if (old)
gst_object_unref (old);
} else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
&type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
&& handle) {
GstGLPlatform platform;
GstGLAPI gl_apis;
GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
handle, type, apis);
platform = gst_gl_platform_from_string (type);
gl_apis = gst_gl_api_from_string (apis);
if (gl_apis && platform)
other_context =
gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
platform, gl_apis);
}
}
}
if (mix->priv->other_context) {
if (!other_context) {
other_context = mix->priv->other_context;
} else {
GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
("%s", "Cannot share with more than one GL context"),
("%s", "Cannot share with more than one GL context"));
}
}
if (!mix->context) {
mix->context = gst_gl_context_new (mix->display);
if (!gst_gl_context_create (mix->context, other_context, &error))
goto context_error;
do {
if (mix->context)
gst_object_unref (mix->context);
/* just get a GL context. we don't care */
mix->context =
gst_gl_display_get_gl_context_for_thread (mix->display, NULL);
if (!mix->context) {
mix->context = gst_gl_context_new (mix->display);
if (!gst_gl_context_create (mix->context, mix->priv->other_context,
&error))
goto context_error;
}
} while (!gst_gl_display_add_context (mix->display, mix->context));
}
if (mix_class->decide_allocation)