Allow setting memory limits on media::DemuxerStream

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 77 matching lines @@
   // DemuxerStream implementation.
   Type type() const override;
   Liveness liveness() const override;
   void Read(const ReadCB& read_cb) override;
   void EnableBitstreamConverter() override;
   bool SupportsConfigChanges() override;
   AudioDecoderConfig audio_decoder_config() override;
   VideoDecoderConfig video_decoder_config() override;
   VideoRotation video_rotation() override;
 
+  // TODO(servolk): Implement better memory limit control for FFMpegDemuxer,
+  // currently is has a hard-coded limit of 150Mb across all streams (see
+  // IsMaxMemoryUsageReached and crbug.com/343304).
+  // Also FFmpegDemuxer is always used with media::BufferDataSource, perhaps
+  // we should control buffer size via that for FFmpeg.
+  //int GetMemoryLimit() const override;
+  //void SetMemoryLimit(int memory_limit) override;
+
   void SetLiveness(Liveness liveness);
 
   // Returns the range of buffered data in this stream.
   Ranges<base::TimeDelta> GetBufferedRanges() const;
 
   // Returns elapsed time based on the already queued packets.
   // Used to determine stream duration when it's not known ahead of time.
   base::TimeDelta GetElapsedTime() const;
 
   // Returns true if this stream has capacity for additional data.
@@ skipping 196 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<FFmpegDemuxer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_DEMUXER_H_