mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 16:50:47 +00:00
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/* GStreamer
|
|
* Copyright (C) 2016 Alessandro Decina <alessandro.d@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "glcontexthelper.h"
|
|
|
|
static GstGLContext *
|
|
_find_local_gl_context (GstGLContextHelper * ctxh)
|
|
{
|
|
GstGLContext *gl_context = NULL;
|
|
|
|
gst_gl_query_local_gl_context (GST_ELEMENT (ctxh->element), GST_PAD_SRC,
|
|
&gl_context);
|
|
|
|
return gl_context;
|
|
}
|
|
|
|
GstGLContextHelper *
|
|
gst_gl_context_helper_new (GstElement * element)
|
|
{
|
|
GstGLContextHelper *ctxh = g_new0 (GstGLContextHelper, 1);
|
|
ctxh->element = gst_object_ref (element);
|
|
|
|
return ctxh;
|
|
}
|
|
|
|
void
|
|
gst_gl_context_helper_free (GstGLContextHelper * ctxh)
|
|
{
|
|
g_return_if_fail (ctxh != NULL);
|
|
|
|
gst_object_unref (ctxh->element);
|
|
|
|
if (ctxh->display)
|
|
gst_object_unref (ctxh->display);
|
|
|
|
if (ctxh->context)
|
|
gst_object_unref (ctxh->context);
|
|
|
|
if (ctxh->other_context)
|
|
gst_object_unref (ctxh->other_context);
|
|
|
|
g_free (ctxh);
|
|
}
|
|
|
|
void
|
|
gst_gl_context_helper_ensure_context (GstGLContextHelper * ctxh)
|
|
{
|
|
GError *error = NULL;
|
|
GstGLContext *context;
|
|
|
|
g_return_if_fail (ctxh != NULL);
|
|
|
|
if (!ctxh->display)
|
|
gst_gl_ensure_element_data (ctxh->element, &ctxh->display,
|
|
&ctxh->other_context);
|
|
|
|
if (!ctxh->display)
|
|
goto display_error;
|
|
|
|
context = _find_local_gl_context (ctxh);
|
|
if (context) {
|
|
GST_INFO_OBJECT (ctxh->element, "found local context %p, old context %p",
|
|
context, ctxh->context);
|
|
if (ctxh->context)
|
|
gst_object_unref (ctxh->context);
|
|
ctxh->context = context;
|
|
}
|
|
|
|
if (!ctxh->context) {
|
|
GST_OBJECT_LOCK (ctxh->display);
|
|
do {
|
|
if (ctxh->context)
|
|
gst_object_unref (ctxh->context);
|
|
ctxh->context =
|
|
gst_gl_display_get_gl_context_for_thread (ctxh->display, NULL);
|
|
if (!ctxh->context) {
|
|
if (!gst_gl_display_create_context (ctxh->display,
|
|
ctxh->other_context, &ctxh->context, &error)) {
|
|
GST_OBJECT_UNLOCK (ctxh->display);
|
|
goto context_error;
|
|
}
|
|
}
|
|
} while (!gst_gl_display_add_context (ctxh->display, ctxh->context));
|
|
GST_OBJECT_UNLOCK (ctxh->display);
|
|
}
|
|
|
|
return;
|
|
|
|
context_error:
|
|
{
|
|
GST_ELEMENT_ERROR (ctxh->element, RESOURCE, NOT_FOUND, ("%s",
|
|
error->message), (NULL));
|
|
g_clear_error (&error);
|
|
|
|
return;
|
|
}
|
|
|
|
display_error:
|
|
{
|
|
GST_ELEMENT_ERROR (ctxh->element, RESOURCE, NOT_FOUND,
|
|
("Failed to obtain display"), (NULL));
|
|
|
|
return;
|
|
}
|
|
}
|