Source/WebCore/Modules/webaudio/StereoPannerNode.h

/*
 * Copyright 2014 The Chromium Authors. All rights reserved.
 * Copyright (C) 2020 Apple 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.
 */

#pragma once

#if ENABLE(WEB_AUDIO)

#include "AudioNode.h"
#include "AudioParam.h"
#include "StereoPanner.h"
#include "StereoPannerOptions.h"

namespace WebCore {

class AudioContext;

class StereoPannerNode final : public AudioNode {
    WTF_MAKE_ISO_ALLOCATED(StereoPannerNode);
public:
    static ExceptionOr<Ref<StereoPannerNode>> create(BaseAudioContext&, const StereoPannerOptions& = { });
    
    ~StereoPannerNode();
    
    AudioParam& pan() { return m_pan.get(); }
    
private:
    StereoPannerNode(BaseAudioContext&, float pan);
    
    // AudioNode
    void process(size_t framesToProcess) final;
    void processOnlyAudioParams(size_t framesToProcess) final;
    bool requiresTailProcessing() const final { return false; }

    ExceptionOr<void> setChannelCount(unsigned) final;
    ExceptionOr<void> setChannelCountMode(ChannelCountMode) final;
    
    double tailTime() const final { return 0; }
    double latencyTime() const final { return 0; }
    
    Ref<AudioParam> m_pan;
    AudioFloatArray m_sampleAccurateValues;
};

} // namespace WebCore

#endif // ENABLE(WEB_AUDIO)