Fire canplaythrough event at the proper time for audio/video

webkit/media/buffered_data_source.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 "webkit/media/buffered_data_source.h"
 
 #include "base/bind.h"
 #include "media/base/filter_host.h"
 #include "media/base/media_log.h"
 #include "net/base/net_errors.h"
@@ skipping 588 matching lines @@
   if (error > 0) {
     // If a position error code is received, read was successful. So copy
     // from intermediate read buffer to the target read buffer.
     memcpy(read_buffer_, intermediate_read_buffer_.get(), error);
   } else if (error == 0 && total_bytes_ == kPositionNotSpecified) {
     // We've reached the end of the file and we didn't know the total size
     // before. Update the total size so Read()s past the end of the file will
     // fail like they would if we had known the file size at the beginning.
     total_bytes_ = loader_->instance_size();
 
-    if (host() && total_bytes_ != kPositionNotSpecified)
+    if (host() && total_bytes_ != kPositionNotSpecified) {
       host()->SetTotalBytes(total_bytes_);
+      host()->SetBufferedBytes(total_bytes_);
+    }
   }
   DoneRead_Locked(error);
 }
 
 void BufferedDataSource::NetworkEventCallback() {
   DCHECK(MessageLoop::current() == render_loop_);
   DCHECK(loader_.get());
 
   // In case of non-HTTP request we don't need to report network events,
   // so return immediately.
@@ skipping 33 matching lines @@
 void BufferedDataSource::UpdateHostState_Locked() {
   // Called from various threads, under lock.
   lock_.AssertAcquired();
 
   media::FilterHost* filter_host = host();
   if (!filter_host)
     return;
 
   filter_host->SetLoaded(loaded_);
 
-  if (streaming_) {
+  if (streaming_)
     filter_host->SetStreaming(true);
-  } else {
+
+  if (total_bytes_ != kPositionNotSpecified)
     filter_host->SetTotalBytes(total_bytes_);
-    filter_host->SetBufferedBytes(buffered_bytes_);
-  }
+  filter_host->SetBufferedBytes(buffered_bytes_);
 }
 
 }  // namespace webkit_media