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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 "config.h"
#if ENABLE(WEB_AUDIO)
#include "AudioBus.h"
#include "AudioFileReader.h"
#include "PlatformBridge.h"
#include <wtf/PassOwnPtr.h>
namespace WebCore {
PassOwnPtr<AudioBus> AudioBus::loadPlatformResource(const char* name, double sampleRate)
{
return PlatformBridge::loadPlatformAudioResource(name, sampleRate);
}
PassOwnPtr<AudioBus> createBusFromInMemoryAudioFile(const void* data, size_t dataSize, bool mixToMono, double sampleRate)
{
OwnPtr<AudioBus> audioBus = PlatformBridge::decodeAudioFileData(static_cast<const char*>(data), dataSize, sampleRate);
if (audioBus->numberOfChannels() == 2 && mixToMono) {
OwnPtr<AudioBus> monoAudioBus = adoptPtr(new AudioBus(1, audioBus->length()));
// FIXME: AudioBus::copyFrom() should be able to do a downmix to mono.
// for now simply copy the left channel.
monoAudioBus->channel(0)->copyFrom(audioBus->channel(0));
return monoAudioBus.release();
}
return audioBus.release();
}
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
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