/*
 * 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 "ChromiumBridge.h"
#include <wtf/PassOwnPtr.h>

namespace WebCore {

// We will use this version of loadPlatformResource() once the resources are checked into Chromium.

// PassOwnPtr<AudioBus> AudioBus::loadPlatformResource(const char* name, double sampleRate)
// {
//     return ChromiumBridge::loadPlatformAudioResource(name, sampleRate);
// }

PassOwnPtr<AudioBus> createBusFromInMemoryAudioFile(const void* data, size_t dataSize, bool mixToMono, double sampleRate)
{
    OwnPtr<AudioBus> audioBus = ChromiumBridge::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)