Reland 15721002: Hook up the device selection to the WebAudio live audio

media/audio/win/audio_unified_win.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 "media/audio/win/audio_unified_win.h"
 
 #include <Functiondiscoverykeys_devpkey.h>
 
 #include "base/debug/trace_event.h"
 #ifndef NDEBUG
@@ skipping 91 matching lines @@
 // Convert frame count to milliseconds given the audio format in |format|.
 static double FrameCountToMilliseconds(int num_frames,
                                        const WAVEFORMATPCMEX& format) {
   return (base::Time::kMillisecondsPerSecond * num_frames) /
       static_cast<double>(format.Format.nSamplesPerSec);
 }
 
 namespace media {
 
 WASAPIUnifiedStream::WASAPIUnifiedStream(AudioManagerWin* manager,
-                                         const AudioParameters& params)
+                                         const AudioParameters& params,
+                                         const std::string& input_device_id)
     : creating_thread_id_(base::PlatformThread::CurrentId()),
       manager_(manager),
       params_(params),
       input_channels_(params.input_channels()),
       output_channels_(params.channels()),
+      input_device_id_(input_device_id),
       share_mode_(CoreAudioUtil::GetShareMode()),
       audio_io_thread_(NULL),
       opened_(false),
       volume_(1.0),
       output_buffer_size_frames_(0),
       input_buffer_size_frames_(0),
       endpoint_render_buffer_size_frames_(0),
       endpoint_capture_buffer_size_frames_(0),
       num_written_frames_(0),
       total_delay_ms_(0.0),
@@ skipping 193 matching lines @@
   }
   if (FAILED(hr))
     return false;
 
   ScopedComPtr<IAudioRenderClient> audio_render_client =
       CoreAudioUtil::CreateRenderClient(audio_output_client);
   if (!audio_render_client)
     return false;
 
   // Capture side (always event driven but format depends on varispeed or not):
-
+  // TODO(henrika): Open the correct input device with |input_device_id_|,
+  // http://crbug.com/147327.
   ScopedComPtr<IAudioClient> audio_input_client =
       CoreAudioUtil::CreateDefaultClient(eCapture, eConsole);
   if (!audio_input_client)
     return false;
 
   if (!CoreAudioUtil::IsFormatSupported(audio_input_client,
                                         share_mode_,
                                         &input_format_)) {
     return false;
   }
@@ skipping 629 matching lines @@
 void WASAPIUnifiedStream::StopAndJoinThread(HRESULT err) {
   CHECK(GetCurrentThreadId() == creating_thread_id_);
   DCHECK(audio_io_thread_.get());
   SetEvent(stop_streaming_event_.Get());
   audio_io_thread_->Join();
   audio_io_thread_.reset();
   HandleError(err);
 }
 
 }  // namespace media