Initialize media timeline correctly for positive start times.

media/filters/chunk_demuxer.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/filters/chunk_demuxer.h"
 
 #include <algorithm>
 #include <limits>
 #include <list>
 
@@ skipping 1123 matching lines @@
   base::AutoLock auto_lock(lock_);
   if (type == DemuxerStream::VIDEO)
     return video_.get();
 
   if (type == DemuxerStream::AUDIO)
     return audio_.get();
 
   return NULL;
 }
 
+TimeDelta ChunkDemuxer::GetStartTime() const {
+  return TimeDelta();
+}
+
 Demuxer::Liveness ChunkDemuxer::GetLiveness() const {
   return liveness_;
 }
 
 void ChunkDemuxer::StartWaitingForSeek(TimeDelta seek_time) {
   DVLOG(1) << "StartWaitingForSeek()";
   base::AutoLock auto_lock(lock_);
   DCHECK(state_ == INITIALIZED || state_ == ENDED || state_ == SHUTDOWN ||
          state_ == PARSE_ERROR) << state_;
   DCHECK(seek_cb_.is_null());
@@ skipping 481 matching lines @@
 
     liveness_ = params.liveness;
   }
 
   // Wait until all streams have initialized.
   if ((!source_id_audio_.empty() && !audio_) ||
       (!source_id_video_.empty() && !video_)) {
     return;
   }
 
-  SeekAllSources(base::TimeDelta());
+  SeekAllSources(GetStartTime());
   StartReturningData();
 
   if (duration_ == kNoTimestamp())
     duration_ = kInfiniteDuration();
 
   // The demuxer is now initialized after the |start_timestamp_| was set.
   ChangeState_Locked(INITIALIZED);
   base::ResetAndReturn(&init_cb_).Run(PIPELINE_OK);
 }
 
@@ skipping 134 matching lines @@
 }
 
 void ChunkDemuxer::ShutdownAllStreams() {
   for (SourceStateMap::iterator itr = source_state_map_.begin();
        itr != source_state_map_.end(); ++itr) {
     itr->second->Shutdown();
   }
 }
 
 }  // namespace media