Support for parsing encrypted WebM streams by src.

media/ffmpeg/ffmpeg_common.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_FFMPEG_FFMPEG_COMMON_H_
 #define MEDIA_FFMPEG_FFMPEG_COMMON_H_
 
 // Used for FFmpeg error codes.
 #include <cerrno>
 
@@ skipping 54 matching lines @@
 MEDIA_EXPORT base::TimeDelta ConvertFromTimeBase(const AVRational& time_base,
                                                  int64 timestamp);
 
 // Converts a base::TimeDelta into an int64 timestamp in |time_base| units.
 // For example if |timestamp| is 0.5 seconds and |time_base| is {1, 44100}, then
 // the return value will be 22050 since that is how many 1/44100ths of a second
 // represent 0.5 seconds.
 MEDIA_EXPORT int64 ConvertToTimeBase(const AVRational& time_base,
                                      const base::TimeDelta& timestamp);
 
 void AVCodecContextToAudioDecoderConfig(

[ddorwin, 2013/03/10 21:29:39]

Should this be local to the .cc file now?

[fgalligan1, 2013/03/12 00:42:42]

Done.

     const AVCodecContext* codec_context,
+    bool is_encrypted,
+    AudioDecoderConfig* config);
+void AVStreamToAudioDecoderConfig(
+    const AVStream* stream,
     AudioDecoderConfig* config);
 void AudioDecoderConfigToAVCodecContext(
     const AudioDecoderConfig& config,
     AVCodecContext* codec_context);
 
 void AVStreamToVideoDecoderConfig(
     const AVStream* stream,
     VideoDecoderConfig* config);
 void VideoDecoderConfigToAVCodecContext(
     const VideoDecoderConfig& config,
@@ skipping 13 matching lines @@
 
 // Converts an FFmpeg video codec ID into its corresponding supported codec id.
 VideoCodec CodecIDToVideoCodec(CodecID codec_id);
 
 // Converts an FFmpeg audio codec ID into its corresponding supported codec id.
 AudioCodec CodecIDToAudioCodec(CodecID codec_id);
 
 }  // namespace media
 
 #endif  // MEDIA_FFMPEG_FFMPEG_COMMON_H_