Replace WebAudio MediaCodec usage with FFmpeg. A ~4x improvement.

content/renderer/renderer_blink_platform_impl.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 "content/renderer/renderer_blink_platform_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 80 matching lines @@
 #include "third_party/WebKit/public/platform/WebPluginListBuilder.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceMotionListener.h"
 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceOrientationListener.h"
 #include "ui/gfx/color_profile.h"
 #include "url/gurl.h"
 
 #if defined(OS_ANDROID)
 #include "content/renderer/android/synchronous_compositor_factory.h"
-#include "content/renderer/media/android/audio_decoder_android.h"
 #include "gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "content/common/mac/font_descriptor.h"
 #include "content/common/mac/font_loader.h"
 #include "content/renderer/webscrollbarbehavior_impl_mac.h"
 #include "third_party/WebKit/public/platform/mac/WebSandboxSupport.h"
 #endif
 
@@ skipping 634 matching lines @@
   // For CHANNEL_LAYOUT_DISCRETE, pass the explicit channel count along with
   // the channel layout when creating an |AudioParameters| object.
   media::AudioParameters params(media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
                                 layout, static_cast<int>(sample_rate), 16,
                                 buffer_size);
   params.set_channels_for_discrete(channels);
 
   return new RendererWebAudioDeviceImpl(params, callback, session_id);
 }
 
-#if defined(OS_ANDROID)
 bool RendererBlinkPlatformImpl::loadAudioResource(
     blink::WebAudioBus* destination_bus,
     const char* audio_file_data,
-    size_t data_size) {
-  return DecodeAudioFileData(destination_bus,
-                             audio_file_data,
-                             data_size,
-                             thread_safe_sender_);
-}
-#else
-bool RendererBlinkPlatformImpl::loadAudioResource(
-    blink::WebAudioBus* destination_bus,
-    const char* audio_file_data,
     size_t data_size) {
   return DecodeAudioFileData(
       destination_bus, audio_file_data, data_size);
 }
-#endif  // defined(OS_ANDROID)
 
 //------------------------------------------------------------------------------
 
 blink::WebMIDIAccessor* RendererBlinkPlatformImpl::createMIDIAccessor(
     blink::WebMIDIAccessorClient* client) {
   blink::WebMIDIAccessor* accessor =
       GetContentClient()->renderer()->OverrideCreateMIDIAccessor(client);
   if (accessor)
     return accessor;
 
@@ skipping 503 matching lines @@
 //------------------------------------------------------------------------------
 
 void RendererBlinkPlatformImpl::MockBatteryStatusChangedForTesting(
     const blink::WebBatteryStatus& status) {
   if (!g_test_battery_status_listener)
     return;
   g_test_battery_status_listener->updateBatteryStatus(status);
 }
 
 }  // namespace content