Calculate the buffered ranges in ChunkDemuxer::GetBufferedRanges()

media/filters/chunk_demuxer.h

 // 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.
 
 #ifndef MEDIA_FILTERS_CHUNK_DEMUXER_H_
 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 101 matching lines @@
 
   // StreamParser callbacks.
   void OnStreamParserInitDone(bool success, base::TimeDelta duration);
   bool OnNewConfigs(bool has_audio, bool has_video,
                     const AudioDecoderConfig& audio_config,
                     const VideoDecoderConfig& video_config);
   bool OnAudioBuffers(const StreamParser::BufferQueue& buffers);
   bool OnVideoBuffers(const StreamParser::BufferQueue& buffers);
   bool OnKeyNeeded(scoped_array<uint8> init_data, int init_data_size);
 
+  // Helper functions for calculating GetBufferedRanges().
+  void AddIntersectionRange(
+      SourceBufferStream::TimespanList::const_iterator& itr_a,
+      SourceBufferStream::TimespanList::const_iterator& itr_b,
+      SourceBufferStream::TimespanList::const_iterator itr_a_end,
+      SourceBufferStream::TimespanList::const_iterator itr_b_end,
+      Ranges* ranges_out) const;
+  SourceBufferStream::TimespanList::const_iterator next(
+      SourceBufferStream::TimespanList::const_iterator itr) const;
+
   mutable base::Lock lock_;
   State state_;
 
   DemuxerHost* host_;
   ChunkDemuxerClient* client_;
   PipelineStatusCB init_cb_;
   PipelineStatusCB seek_cb_;
 
   scoped_refptr<ChunkDemuxerStream> audio_;
   scoped_refptr<ChunkDemuxerStream> video_;
@@ skipping 10 matching lines @@
   // removed with RemoveID() but can not be re-added (yet).
   std::string source_id_audio_;
   std::string source_id_video_;
 
   DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_H_