Add live mode detection in WebM MediaSource parser.

media/base/stream_parser.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_BASE_STREAM_PARSER_H_
 #define MEDIA_BASE_STREAM_PARSER_H_
 
 #include <deque>
 #include <map>
 #include <string>
@@ skipping 31 matching lines @@
 
   // Map of text track ID to the track configuration.
   typedef std::map<TrackId, TextTrackConfig> TextTrackConfigMap;
 
   // Map of text track ID to decode-timestamp-ordered buffers for the track.
   typedef std::map<TrackId, const BufferQueue> TextBufferQueueMap;
 
   StreamParser();
   virtual ~StreamParser();
 
-  // Indicates completion of parser initialization.
-  // First parameter - Indicates initialization success. Set to true if
-  //                   initialization was successful. False if an error
-  //                   occurred.
-  // Second parameter - Indicates the stream duration. Only contains a valid
-  //                    value if the first parameter is true.
-  // Third parameter - Indicates the Time associated with
-  //                   presentation timestamp 0 if such a mapping exists in
-  //                   the bytestream. If no mapping exists this parameter
-  //                   contains null Time object. Only contains a valid
-  //                   value if the first parameter is true.
-  // Fourth parameters - Indicates that timestampOffset should be updated based
-  //                    on the earliest end timestamp (audio or video) provided
-  //                    during each NewBuffersCB.
-  typedef base::Callback<void(bool, base::TimeDelta, base::Time, bool)> InitCB;
+  // success - True if initialization was successful, false otherwise.
+  // duration - Stream duration. Only valid if |success| is true;
+  // timeline_offset - Indicates the source Time associated with
+  //                   presentation timestamp 0. A null Time is returned if
+  //                   no mapping to Time exists. Only contains a
+  //                   valid value if |success| is true.
+  // auto_update_timestamp_offset -
+  //     Indicates that timestampOffset should be updated based on the earliest
+  //     end timestamp (audio or video) provided during each NewBuffersCB.
+  // live_mode - True when the stream is a live stream.
+  typedef base::Callback<void(bool success,
+                              base::TimeDelta duration,
+                              base::Time timeline_offset,
+                              bool auto_update_timestamp_offset,
+                              bool live_mode)> InitCB;

[Sergey Ulanov, 2014/04/24 02:55:14]

IMO it's better to add a struct (e.g. StreamParameters or something like that)
to make it easier to add new parameters here. let me know what you think - I'll
do it in a separate change if you agree.

[acolwell GONE FROM CHROMIUM, 2014/04/24 16:59:36]

Yeah. We should probably have a struct at this point.

 
   // Indicates when new stream configurations have been parsed.
   // First parameter - The new audio configuration. If the config is not valid
   //                   then it means that there isn't an audio stream.
   // Second parameter - The new video configuration. If the config is not valid
   //                    then it means that there isn't an audio stream.
   // Third parameter - The new text tracks configuration.  If the map is empty,
   //                   then no text tracks were parsed from the stream.
   // Return value - True if the new configurations are accepted.
   //                False if the new configurations are not supported
@@ skipping 67 matching lines @@
 // subtle issues with tie-breaking. See http://crbug.com/338484.
 MEDIA_EXPORT bool MergeBufferQueues(
     const StreamParser::BufferQueue& audio_buffers,
     const StreamParser::BufferQueue& video_buffers,
     const StreamParser::TextBufferQueueMap& text_buffers,
     StreamParser::BufferQueue* merged_buffers);
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_STREAM_PARSER_H_