Simplified AudioOutputStream interface.

media/filters/audio_renderer_impl.cc

 // Copyright (c) 2010 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/audio_renderer_impl.h"
 
 #include <math.h>
 
 #include "media/base/filter_host.h"
 #include "media/audio/audio_manager.h"
@@ skipping 61 matching lines @@
 }
 
 bool AudioRendererImpl::OnInitialize(const MediaFormat& media_format) {
   // Parse out audio parameters.
   AudioParameters params;
   if (!ParseMediaFormat(media_format, &params.channels,
                         &params.sample_rate, &params.bits_per_sample)) {
     return false;
   }
 
+  // Set packet size.
+  params.samples_per_packet = kSamplesPerBuffer;
+
   bytes_per_second_ = params.sample_rate * params.channels *
       params.bits_per_sample / 8;
 
   // Create our audio stream.
   stream_ = AudioManager::GetAudioManager()->MakeAudioOutputStream(params);
   if (!stream_)
     return false;
 
-  // Calculate buffer size and open the stream.
-  size_t size = kSamplesPerBuffer * params.channels *
-      params.bits_per_sample / 8;
-  if (!stream_->Open(size)) {
+  if (!stream_->Open()) {
     stream_->Close();
     stream_ = NULL;
   }
   return true;
 }
 
 void AudioRendererImpl::OnStop() {
   if (stream_)
     stream_->Stop();
 }
 
 }  // namespace media