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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 "public/platform/WebAudioBus.h"
#include "wtf/build_config.h"
#include "platform/audio/AudioBus.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"
namespace blink {
class WebAudioBusPrivate : public AudioBus {};
void WebAudioBus::initialize(unsigned numberOfChannels,
size_t length,
double sampleRate) {
RefPtr<AudioBus> audioBus = AudioBus::create(numberOfChannels, length);
audioBus->setSampleRate(sampleRate);
if (m_private)
(static_cast<AudioBus*>(m_private))->deref();
audioBus->ref();
m_private = static_cast<WebAudioBusPrivate*>(audioBus.get());
}
void WebAudioBus::resizeSmaller(size_t newLength) {
ASSERT(m_private);
if (m_private) {
ASSERT(newLength <= length());
m_private->resizeSmaller(newLength);
}
}
void WebAudioBus::reset() {
if (m_private) {
(static_cast<AudioBus*>(m_private))->deref();
m_private = 0;
}
}
unsigned WebAudioBus::numberOfChannels() const {
if (!m_private)
return 0;
return m_private->numberOfChannels();
}
size_t WebAudioBus::length() const {
if (!m_private)
return 0;
return m_private->length();
}
double WebAudioBus::sampleRate() const {
if (!m_private)
return 0;
return m_private->sampleRate();
}
float* WebAudioBus::channelData(unsigned channelIndex) {
if (!m_private)
return 0;
ASSERT(channelIndex < numberOfChannels());
return m_private->channel(channelIndex)->mutableData();
}
PassRefPtr<AudioBus> WebAudioBus::release() {
RefPtr<AudioBus> audioBus(adoptRef(static_cast<AudioBus*>(m_private)));
m_private = 0;
return audioBus;
}
} // namespace blink
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