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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/at_exit.h"
#include "base/logging.h"
#include "media/audio/audio_manager_base.h"
namespace media {
FakeAudioOutputStream* FakeAudioOutputStream::current_fake_stream_ = NULL;
// static
AudioOutputStream* FakeAudioOutputStream::MakeFakeStream(
AudioManagerBase* manager,
const AudioParameters& params) {
FakeAudioOutputStream* new_stream = new FakeAudioOutputStream(manager,
params);
DCHECK(current_fake_stream_ == NULL);
current_fake_stream_ = new_stream;
return new_stream;
}
bool FakeAudioOutputStream::Open() {
if (bytes_per_buffer_ < sizeof(int16))
return false;
buffer_.reset(new uint8[bytes_per_buffer_]);
return true;
}
// static
FakeAudioOutputStream* FakeAudioOutputStream::GetCurrentFakeStream() {
return current_fake_stream_;
}
void FakeAudioOutputStream::Start(AudioSourceCallback* callback) {
callback_ = callback;
memset(buffer_.get(), 0, bytes_per_buffer_);
callback_->OnMoreData(this, buffer_.get(), bytes_per_buffer_,
AudioBuffersState(0, 0));
}
void FakeAudioOutputStream::Stop() {
callback_ = NULL;
}
void FakeAudioOutputStream::SetVolume(double volume) {
volume_ = volume;
}
void FakeAudioOutputStream::GetVolume(double* volume) {
*volume = volume_;
}
void FakeAudioOutputStream::Close() {
closed_ = true;
audio_manager_->ReleaseOutputStream(this);
}
FakeAudioOutputStream::FakeAudioOutputStream(AudioManagerBase* manager,
const AudioParameters& params)
: audio_manager_(manager),
volume_(0),
callback_(NULL),
bytes_per_buffer_(params.GetBytesPerBuffer()),
closed_(false) {
}
FakeAudioOutputStream::~FakeAudioOutputStream() {
if (current_fake_stream_ == this)
current_fake_stream_ = NULL;
}
} // namespace media
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