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/*
* Copyright (C) 2010, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/public/platform/web_audio_bus.h"
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/platform/audio/audio_bus.h"
namespace blink {
void WebAudioBus::Initialize(unsigned number_of_channels,
size_t length,
double sample_rate) {
scoped_refptr<AudioBus> audio_bus = AudioBus::Create(
number_of_channels, base::checked_cast<wtf_size_t>(length));
audio_bus->SetSampleRate(sample_rate);
if (private_)
private_->Release();
audio_bus->AddRef();
private_ = audio_bus.get();
}
void WebAudioBus::ResizeSmaller(size_t new_length) {
DCHECK(private_);
if (private_) {
DCHECK_LE(new_length, length());
private_->ResizeSmaller(static_cast<wtf_size_t>(new_length));
}
}
void WebAudioBus::Reset() {
if (private_) {
private_->Release();
private_ = nullptr;
}
}
unsigned WebAudioBus::NumberOfChannels() const {
if (!private_)
return 0;
return private_->NumberOfChannels();
}
size_t WebAudioBus::length() const {
if (!private_)
return 0;
return private_->length();
}
double WebAudioBus::SampleRate() const {
if (!private_)
return 0;
return private_->SampleRate();
}
float* WebAudioBus::ChannelData(unsigned channel_index) {
if (!private_)
return nullptr;
DCHECK_LT(channel_index, NumberOfChannels());
return private_->Channel(channel_index)->MutableData();
}
scoped_refptr<AudioBus> WebAudioBus::Release() {
scoped_refptr<AudioBus> audio_bus(private_.get());
private_->Release();
private_ = nullptr;
return audio_bus;
}
} // namespace blink
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