Very early implementation for HTMLMediaElement / Web Audio API integration

content/renderer/media/audio_device.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 "content/renderer/media/audio_device.h"
 
 #include "base/message_loop.h"
 #include "content/common/child_process.h"
 #include "content/common/media/audio_messages.h"
 #include "content/common/view_messages.h"
@@ skipping 185 matching lines @@
     // Convert the number of pending bytes in the render buffer
     // into milliseconds.
     audio_delay_milliseconds_ = pending_data / bytes_per_ms;
 
     FireRenderCallback();
   }
 }
 
 void AudioDevice::FireRenderCallback() {
   if (callback_) {
+// printf("AudioDevice::FireRenderCallback!!!!!!!!!!!!!! : %d\n", (int)buffer_size_);
     // Update the audio-delay measurement then ask client to render audio.
     callback_->Render(audio_data_, buffer_size_, audio_delay_milliseconds_);
 
     // Interleave, scale, and clip to int16.
     int16* output_buffer16 = static_cast<int16*>(shared_memory_data());
     media::InterleaveFloatToInt16(audio_data_, output_buffer16, buffer_size_);
   }
 }
 
 double AudioDevice::GetAudioHardwareSampleRate() {
   // Uses cached value if possible.
   static double hardware_sample_rate = 0;
   if (!hardware_sample_rate) {
     RenderThread::current()->Send(
         new ViewHostMsg_GetHardwareSampleRate(&hardware_sample_rate));
   }
   return hardware_sample_rate;
 }