/* 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; } }