Caching AudioOutputDevice instances in mixer manager

media/renderers/default_renderer_factory.cc

 // Copyright 2014 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/renderers/default_renderer_factory.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 17 matching lines @@
 
 #if !defined(MEDIA_DISABLE_LIBVPX)
 #include "media/filters/vpx_video_decoder.h"
 #endif
 
 namespace media {
 
 DefaultRendererFactory::DefaultRendererFactory(
     const scoped_refptr<MediaLog>& media_log,
     DecoderFactory* decoder_factory,
-    const GetGpuFactoriesCB& get_gpu_factories_cb,
-    const AudioHardwareConfig& audio_hardware_config)
+    const GetGpuFactoriesCB& get_gpu_factories_cb)
     : media_log_(media_log),
       decoder_factory_(decoder_factory),
-      get_gpu_factories_cb_(get_gpu_factories_cb),
-      audio_hardware_config_(audio_hardware_config) {}
+      get_gpu_factories_cb_(get_gpu_factories_cb) {}
 
 DefaultRendererFactory::~DefaultRendererFactory() {
 }
 
 ScopedVector<AudioDecoder> DefaultRendererFactory::CreateAudioDecoders(
     const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner) {
   // Create our audio decoders and renderer.
   ScopedVector<AudioDecoder> audio_decoders;
 
 #if !defined(MEDIA_DISABLE_FFMPEG)
@@ skipping 45 matching lines @@
 }
 
 std::unique_ptr<Renderer> DefaultRendererFactory::CreateRenderer(
     const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
     const scoped_refptr<base::TaskRunner>& worker_task_runner,
     AudioRendererSink* audio_renderer_sink,
     VideoRendererSink* video_renderer_sink,
     const RequestSurfaceCB& request_surface_cb) {
   DCHECK(audio_renderer_sink);
 
-  std::unique_ptr<AudioRenderer> audio_renderer(
-      new AudioRendererImpl(media_task_runner, audio_renderer_sink,
-                            CreateAudioDecoders(media_task_runner),
-                            audio_hardware_config_, media_log_));
+  std::unique_ptr<AudioRenderer> audio_renderer(new AudioRendererImpl(
+      media_task_runner, audio_renderer_sink,
+      CreateAudioDecoders(media_task_runner), media_log_));
 
   GpuVideoAcceleratorFactories* gpu_factories = nullptr;
   if (!get_gpu_factories_cb_.is_null())
     gpu_factories = get_gpu_factories_cb_.Run();
 
   std::unique_ptr<VideoRenderer> video_renderer(new VideoRendererImpl(
       media_task_runner, worker_task_runner, video_renderer_sink,
       CreateVideoDecoders(media_task_runner, request_surface_cb, gpu_factories),
       true, gpu_factories, media_log_));
 
   return base::WrapUnique(new RendererImpl(
       media_task_runner, std::move(audio_renderer), std::move(video_renderer)));
 }
 
 }  // namespace media