MSE: Add StreamParser buffer remuxing utility and tests

media/filters/chunk_demuxer.cc

 // Copyright (c) 2012 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 "media/filters/chunk_demuxer.h"
 
 #include <algorithm>
 #include <deque>
 #include <limits>
 #include <list>
@@ skipping 755 matching lines @@
   new_media_segment_ = false;
 }
 
 bool SourceState::OnNewBuffers(
     const StreamParser::BufferQueue& audio_buffers,
     const StreamParser::BufferQueue& video_buffers,
     const StreamParser::TextBufferQueueMap& text_map) {
   DCHECK(!audio_buffers.empty() || !video_buffers.empty() ||
          !text_map.empty());
 
+  // TODO(wolenetz): DCHECK + return false if any of these buffers have UNKNOWN
+  // type() in upcoming coded frame processing compliant implementation. See
+  // http://crbug.com/249422.
+
   AdjustBufferTimestamps(audio_buffers);
   AdjustBufferTimestamps(video_buffers);
 
   StreamParser::BufferQueue filtered_audio;
   StreamParser::BufferQueue filtered_video;
 
   FilterWithAppendWindow(audio_buffers, &audio_needs_keyframe_,
                          &filtered_audio);
 
   FilterWithAppendWindow(video_buffers, &video_needs_keyframe_,
@@ skipping 1075 matching lines @@
 }
 
 void ChunkDemuxer::ShutdownAllStreams() {
   for (SourceStateMap::iterator itr = source_state_map_.begin();
        itr != source_state_map_.end(); ++itr) {
     itr->second->Shutdown();
   }
 }
 
 }  // namespace media