Motown: ffmpeg implementations of framework 'parts'

services/media/framework_ffmpeg/ffmpeg_init.cc

Index: services/media/framework_ffmpeg/ffmpeg_init.cc
diff --git a/services/media/framework_ffmpeg/ffmpeg_init.cc b/services/media/framework_ffmpeg/ffmpeg_init.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4ce9e62b2c33e8627b62e66c275fbfac5971367a
--- /dev/null
+++ b/services/media/framework_ffmpeg/ffmpeg_init.cc
@@ -0,0 +1,27 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/synchronization/lock.h"
+#include "services/media/framework_ffmpeg/ffmpeg_init.h"
+
+extern "C" {
+#include "third_party/ffmpeg/libavformat/avformat.h"
+}
+
+namespace mojo {
+namespace media {
+
+void InitFfmpeg() {
+  static base::Lock lock_;
+  static bool initialized_ = false;
+
+  base::AutoLock lock(lock_);
+  if (!initialized_) {
+    initialized_ = true;
+    av_register_all();
+  }
+}
+
+} // namespace media
+} // namespace mojo