applemedia: refactor GL context code

Rework the GL context code. Now both avfvideosrc and vtdec can create an
internal GL context for pushing textures. Both elements will still try to
use/switch to a local context where available (including after RECONFIGURE
events).

1 files changed, 39 insertions, 0 deletions

diff --git a/sys/applemedia/glcontexthelper.h b/sys/applemedia/glcontexthelper.h
new file mode 100644
index 000000000..4e043f103
--- /dev/null
+++ b/sys/applemedia/glcontexthelper.h
@@ -0,0 +1,39 @@
+/* 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.
+ */
+
+#ifndef _GST_GL_CONTEXT_HELPER_H_
+#define _GST_GL_CONTEXT_HELPER_H_
+
+#include <gst/gst.h>
+#include <gst/gl/gl.h>
+
+typedef struct _GstGLContextHelper
+{
+  GstElement *element;
+  GstGLDisplay *display;
+  GstGLContext *context;
+  GstGLContext *other_context;
+} GstGLContextHelper;
+
+GstGLContextHelper * gst_gl_context_helper_new (GstElement *element);
+void gst_gl_context_helper_free (GstGLContextHelper *ctxh);
+void gst_gl_context_helper_ensure_context (GstGLContextHelper *ctxh);
+
+#endif
+