1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "media/audio/fake_audio_output_stream.h" 6 7#include "base/bind.h" 8#include "base/bind_helpers.h" 9#include "base/logging.h" 10#include "base/message_loop/message_loop.h" 11#include "media/audio/audio_manager_base.h" 12 13namespace media { 14 15// static 16AudioOutputStream* FakeAudioOutputStream::MakeFakeStream( 17 AudioManagerBase* manager, const AudioParameters& params) { 18 return new FakeAudioOutputStream(manager, params); 19} 20 21FakeAudioOutputStream::FakeAudioOutputStream(AudioManagerBase* manager, 22 const AudioParameters& params) 23 : audio_manager_(manager), 24 callback_(NULL), 25 fake_consumer_(manager->GetMessageLoop(), params) { 26} 27 28FakeAudioOutputStream::~FakeAudioOutputStream() { 29 DCHECK(!callback_); 30} 31 32bool FakeAudioOutputStream::Open() { 33 DCHECK(audio_manager_->GetMessageLoop()->BelongsToCurrentThread()); 34 return true; 35} 36 37void FakeAudioOutputStream::Start(AudioSourceCallback* callback) { 38 DCHECK(audio_manager_->GetMessageLoop()->BelongsToCurrentThread()); 39 callback_ = callback; 40 fake_consumer_.Start(base::Bind( 41 &FakeAudioOutputStream::CallOnMoreData, base::Unretained(this))); 42} 43 44void FakeAudioOutputStream::Stop() { 45 DCHECK(audio_manager_->GetMessageLoop()->BelongsToCurrentThread()); 46 fake_consumer_.Stop(); 47 callback_ = NULL; 48} 49 50void FakeAudioOutputStream::Close() { 51 DCHECK(!callback_); 52 DCHECK(audio_manager_->GetMessageLoop()->BelongsToCurrentThread()); 53 audio_manager_->ReleaseOutputStream(this); 54} 55 56void FakeAudioOutputStream::SetVolume(double volume) {}; 57 58void FakeAudioOutputStream::GetVolume(double* volume) { 59 *volume = 0; 60}; 61 62void FakeAudioOutputStream::CallOnMoreData(AudioBus* audio_bus) { 63 DCHECK(audio_manager_->GetMessageLoop()->BelongsToCurrentThread()); 64 callback_->OnMoreData(audio_bus, AudioBuffersState()); 65} 66 67} // namespace media 68