Log AVERROR messages from FFmpegDemuxer in chrome://media-internals.

media/filters/ffmpeg_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.
 
 // Implements the Demuxer interface using FFmpeg's libavformat.  At this time
 // will support demuxing any audio/video format thrown at it.  The streams
 // output mime types audio/x-ffmpeg and video/x-ffmpeg and include an integer
 // key FFmpegCodecID which contains the CodecID enumeration value.  The CodecIDs
 // can be used to create and initialize the corresponding FFmpeg decoder.
 //
@@ skipping 136 matching lines @@
  private:
   friend class FFmpegDemuxerTest;
 
   // Use FFmpegDemuxerStream::Create to construct.
   // Audio/Video streams must include their respective DecoderConfig. At most
   // one DecoderConfig should be provided (leaving the other nullptr). Both
   // configs should be null for text streams.
   FFmpegDemuxerStream(FFmpegDemuxer* demuxer,
                       AVStream* stream,
                       std::unique_ptr<AudioDecoderConfig> audio_config,
-                      std::unique_ptr<VideoDecoderConfig> video_config);
+                      std::unique_ptr<VideoDecoderConfig> video_config,
+                      scoped_refptr<MediaLog> media_log);
 
   // Runs |read_cb_| if present with the front of |buffer_queue_|, calling
   // NotifyCapacityAvailable() if capacity is still available.
   void SatisfyPendingRead();
 
   // Converts an FFmpeg stream timestamp into a base::TimeDelta.
   static base::TimeDelta ConvertStreamTimestamp(const AVRational& time_base,
                                                 int64_t timestamp);
 
   // Resets any currently active bitstream converter.
   void ResetBitstreamConverter();
 
   // Create new bitstream converter, destroying active converter if present.
   void InitBitstreamConverter();
 
   FFmpegDemuxer* demuxer_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   AVStream* stream_;
   base::TimeDelta start_time_;
   std::unique_ptr<AudioDecoderConfig> audio_config_;
   std::unique_ptr<VideoDecoderConfig> video_config_;
+  scoped_refptr<MediaLog> media_log_;
   Type type_;
   Liveness liveness_;
   base::TimeDelta duration_;
   bool end_of_stream_;
   base::TimeDelta last_packet_timestamp_;
   base::TimeDelta last_packet_duration_;
   Ranges<base::TimeDelta> buffered_ranges_;
   VideoRotation video_rotation_;
   bool is_enabled_;
   bool waiting_for_keyframe_;
@@ skipping 188 matching lines @@
   base::WeakPtr<FFmpegDemuxer> weak_this_;
   base::WeakPtrFactory<FFmpegDemuxer> cancel_pending_seek_factory_;
   base::WeakPtrFactory<FFmpegDemuxer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_DEMUXER_H_