Consolidate and improve audio decoding test for all decoders.

media/filters/audio_file_reader.h

 // Copyright (c) 2011 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_AUDIO_FILE_READER_H_
 #define MEDIA_FILTERS_AUDIO_FILE_READER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
@@ skipping 42 matching lines @@
   // read. The Read() method returns the actual number of sample-frames it has
   // read.
   base::TimeDelta GetDuration() const;
   int GetNumberOfFrames() const;
 
   // Helper methods which allows AudioFileReader to double as a test utility for
   // demuxing audio files.  Returns true if a packet could be demuxed from the
   // first audio stream in the file, |output_packet| will contain the demuxed
   // packet then.
   bool ReadPacketForTesting(AVPacket* output_packet);
+  bool SeekForTesting(base::TimeDelta seek_time);
 
   const AVCodecContext* codec_context_for_testing() const {
     return codec_context_;
   }
 
  private:
   bool ReadPacket(AVPacket* output_packet);
 
   scoped_ptr<FFmpegGlue> glue_;
   AVCodecContext* codec_context_;
   int stream_index_;
   FFmpegURLProtocol* protocol_;
   int channels_;
   int sample_rate_;
 
   // AVSampleFormat initially requested; not Chrome's SampleFormat.
   int av_sample_format_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioFileReader);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_AUDIO_FILE_READER_H_