Chrome-side implementation of media source timestamp offset

media/webm/webm_stream_parser.cc

 // 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.
 
 #include "media/webm/webm_stream_parser.h"
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "media/ffmpeg/ffmpeg_common.h"
 #include "media/filters/ffmpeg_glue.h"
@@ skipping 174 matching lines @@
       waiting_for_buffers_(false) {
 }
 
 WebMStreamParser::~WebMStreamParser() {}
 
 void WebMStreamParser::Init(const InitCB& init_cb,
                             const NewConfigCB& config_cb,
                             const NewBuffersCB& audio_cb,
                             const NewBuffersCB& video_cb,
                             const NeedKeyCB& need_key_cb,
-                            const NewMediaSegmentCB& new_segment_cb) {
+                            const NewMediaSegmentCB& new_segment_cb,
+                            const base::Closure& end_of_segment_cb) {
   DCHECK_EQ(state_, kWaitingForInit);
   DCHECK(init_cb_.is_null());
   DCHECK(!init_cb.is_null());
   DCHECK(!config_cb.is_null());
   DCHECK(!audio_cb.is_null() || !video_cb.is_null());
   DCHECK(!need_key_cb.is_null());
   DCHECK(!new_segment_cb.is_null());
+  DCHECK(!end_of_segment_cb.is_null());
 
   ChangeState(kParsingHeaders);
   init_cb_ = init_cb;
   config_cb_ = config_cb;
   audio_cb_ = audio_cb;
   video_cb_ = video_cb;
   need_key_cb_ = need_key_cb;
   new_segment_cb_ = new_segment_cb;
+  end_of_segment_cb_ = end_of_segment_cb;
 }
 
 void WebMStreamParser::Flush() {
   DCHECK_NE(state_, kWaitingForInit);
 
   byte_queue_.Reset();
 
   if (state_ != kParsingClusters)
     return;
 
@@ skipping 188 matching lines @@
   }
 
   int bytes_parsed = cluster_parser_->Parse(data, size);
 
   if (bytes_parsed <= 0)
     return bytes_parsed;
 
   const BufferQueue& audio_buffers = cluster_parser_->audio_buffers();
   const BufferQueue& video_buffers = cluster_parser_->video_buffers();
   base::TimeDelta cluster_start_time = cluster_parser_->cluster_start_time();
+  bool cluster_ended = cluster_parser_->cluster_ended();
 
   if (waiting_for_buffers_ && cluster_start_time != kNoTimestamp()) {
     new_segment_cb_.Run(cluster_start_time);
     waiting_for_buffers_ = false;
   }
 
   if (!audio_buffers.empty() && !audio_cb_.Run(audio_buffers))
     return -1;
 
   if (!video_buffers.empty() && !video_cb_.Run(video_buffers))
     return -1;
 
+  if (cluster_ended)
+    end_of_segment_cb_.Run();
+
   return bytes_parsed;
 }
 
 }  // namespace media