Mpeg2TS - estimate duration for video frames.

media/formats/mp2t/es_parser_h264.h

 // Copyright 2014 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_MP2T_ES_PARSER_H264_H_
 #define MEDIA_FORMATS_MP2T_ES_PARSER_H264_H_
 
 #include <list>
 #include <utility>
 
@@ skipping 62 matching lines @@
   bool UpdateVideoDecoderConfig(const H264SPS* sps);
 
   // Callbacks to pass the stream configuration and the frames.
   NewVideoConfigCB new_video_config_cb_;
   EmitBufferCB emit_buffer_cb_;
 
   // Bytes of the ES stream that have not been emitted yet.
   scoped_ptr<media::OffsetByteQueue> es_queue_;
   std::list<std::pair<int64, TimingDesc> > timing_desc_list_;
 
+  // Duration of the last emitted frame.
+  base::TimeDelta last_frame_duration_;

[acolwell GONE FROM CHROMIUM, 2014/07/03 00:50:58]

Remove? This doesn't appear to be used anywhere.

+
   // H264 parser state.
   // - |current_access_unit_pos_| is pointing to an annexB syncword
   // representing the first NALU of an H264 access unit.
   scoped_ptr<H264Parser> h264_parser_;
   int64 current_access_unit_pos_;
   int64 next_access_unit_pos_;
 
   // Last video decoder config.
   VideoDecoderConfig last_video_decoder_config_;
+
+  // History of frame PTS.
+  std::list<base::TimeDelta> frame_pts_history_;
+
+  DISALLOW_COPY_AND_ASSIGN(EsParserH264);
 };
 
 }  // namespace mp2t
 }  // namespace media
 
 #endif