Fire CanPlayThrough immediately for local and streaming media files

media/filters/dummy_demuxer.cc

 // Copyright (c) 2011 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/dummy_demuxer.h"
 
 #include "base/logging.h"
 
 namespace media {
 
@@ skipping 14 matching lines @@
 
 const VideoDecoderConfig& DummyDemuxerStream::video_decoder_config() {
   CHECK_EQ(type_, VIDEO);
   return video_config_;
 }
 
 void DummyDemuxerStream::Read(const ReadCallback& read_callback) {}
 
 void DummyDemuxerStream::EnableBitstreamConverter() {}
 
-DummyDemuxer::DummyDemuxer(bool has_video, bool has_audio)
+DummyDemuxer::DummyDemuxer(bool has_video, bool has_audio, bool local_source)
     : has_video_(has_video),
-      has_audio_(has_audio) {
+      has_audio_(has_audio),
+      local_source_(local_source) {
   streams_.resize(DemuxerStream::NUM_TYPES);
   if (has_audio)
     streams_[DemuxerStream::AUDIO] =
         new DummyDemuxerStream(DemuxerStream::AUDIO);
   if (has_video)
     streams_[DemuxerStream::VIDEO] =
         new DummyDemuxerStream(DemuxerStream::VIDEO);
 }
 
 DummyDemuxer::~DummyDemuxer() {}
 
 void DummyDemuxer::SetPreload(Preload preload) {}
 
 int DummyDemuxer::GetBitrate() {
   return 0;
 }
 
 scoped_refptr<DemuxerStream> DummyDemuxer::GetStream(DemuxerStream::Type type) {
   return streams_[type];
 }
 
 base::TimeDelta DummyDemuxer::GetStartTime() const {
   return base::TimeDelta();
 }
 
+bool DummyDemuxer::IsLocalSource() {
+  return local_source_;
+}
+
+bool DummyDemuxer::IsSeekable() {
+  return false;

[acolwell GONE FROM CHROMIUM, 2011/12/01 04:25:00]

nit: Might want to add a brief comment here mentioning that this is always false
because the only user of this demuxer is WebRTC and such streams are not
seekable.

+}
+
 }  // namespace media