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// 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/fake_audio_output_stream.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/logging.h"
#include "base/single_thread_task_runner.h"
#include "media/audio/audio_manager_base.h"
namespace media {
// static
AudioOutputStream* FakeAudioOutputStream::MakeFakeStream(
AudioManagerBase* manager, const AudioParameters& params) {
return new FakeAudioOutputStream(manager, params);
}
FakeAudioOutputStream::FakeAudioOutputStream(AudioManagerBase* manager,
const AudioParameters& params)
: audio_manager_(manager),
callback_(NULL),
fake_worker_(manager->GetWorkerTaskRunner(), params),
audio_bus_(AudioBus::Create(params)) {
}
FakeAudioOutputStream::~FakeAudioOutputStream() {
DCHECK(!callback_);
}
bool FakeAudioOutputStream::Open() {
DCHECK(audio_manager_->GetTaskRunner()->BelongsToCurrentThread());
audio_bus_->Zero();
return true;
}
void FakeAudioOutputStream::Start(AudioSourceCallback* callback) {
DCHECK(audio_manager_->GetTaskRunner()->BelongsToCurrentThread());
callback_ = callback;
fake_worker_.Start(base::Bind(
&FakeAudioOutputStream::CallOnMoreData, base::Unretained(this)));
}
void FakeAudioOutputStream::Stop() {
DCHECK(audio_manager_->GetTaskRunner()->BelongsToCurrentThread());
fake_worker_.Stop();
callback_ = NULL;
}
void FakeAudioOutputStream::Close() {
DCHECK(!callback_);
DCHECK(audio_manager_->GetTaskRunner()->BelongsToCurrentThread());
audio_manager_->ReleaseOutputStream(this);
}
void FakeAudioOutputStream::SetVolume(double volume) {};
void FakeAudioOutputStream::GetVolume(double* volume) {
*volume = 0;
};
void FakeAudioOutputStream::CallOnMoreData() {
DCHECK(audio_manager_->GetWorkerTaskRunner()->BelongsToCurrentThread());
callback_->OnMoreData(audio_bus_.get(), 0, 0);
}
} // namespace media
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