Refactor AnnexB bitstream conversion for AVC/H.264

media/formats/mp4/bitstream_converter.h

Index: media/formats/mp4/bitstream_converter.h
diff --git a/media/formats/mp4/bitstream_converter.h b/media/formats/mp4/bitstream_converter.h
new file mode 100644
index 0000000000000000000000000000000000000000..64ccd087d3b27957c97599b0d8fda745c5a172fa
--- /dev/null
+++ b/media/formats/mp4/bitstream_converter.h
@@ -0,0 +1,33 @@
+// Copyright 2015 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.
+
+#ifndef MEDIA_FORMATS_MP4_BITSTREAM_CONVERTER_H_
+#define MEDIA_FORMATS_MP4_BITSTREAM_CONVERTER_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+
+namespace media {
+
+struct SubsampleEntry;
+
+namespace mp4 {
+
+class BitstreamConverter
+    : public base::RefCountedThreadSafe<BitstreamConverter> {
+ public:
+  virtual bool ConvertFrame(std::vector<uint8>* frame_buf,

[sandersd (OOO until July 31), 2015/08/17 18:24:07]

Comment what these parameters are. (In particular, how output is returned and
where to go to understand subsamples.)

[servolk, 2015/08/17 22:06:24]

Done.

+                            bool is_keyframe,
+                            std::vector<SubsampleEntry>* subsamples) const = 0;
+ protected:
+  friend class base::RefCountedThreadSafe<BitstreamConverter>;
+  virtual ~BitstreamConverter();
+};
+
+}  // namespace mp4
+}  // namespace media
+
+#endif  // MEDIA_FORMATS_MP4_AVC_H_