blob: 5afc3297a823e86e09f5e648d493bfd7f4fc93c2 [file] [log] [blame]
/*
* 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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
#include "AudioNode.h"
namespace WebCore {
class AudioContext;
class ChannelMergerNode final : public AudioNode {
WTF_MAKE_ISO_ALLOCATED(ChannelMergerNode);
public:
static RefPtr<ChannelMergerNode> create(BaseAudioContext&, float sampleRate, unsigned numberOfInputs);
// AudioNode
void process(size_t framesToProcess) override;
void reset() override;
// Called in the audio thread (pre-rendering task) when the number of channels for an input may have changed.
void checkNumberOfChannelsForInput(AudioNodeInput*) override;
private:
unsigned m_desiredNumberOfOutputChannels;
double tailTime() const override { return 0; }
double latencyTime() const override { return 0; }
ChannelMergerNode(BaseAudioContext&, float sampleRate, unsigned numberOfInputs);
};
} // namespace WebCore