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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_AUDIONODEEXTERNALINPUTSTREAM_H_
#define MOZILLA_AUDIONODEEXTERNALINPUTSTREAM_H_
#include "MediaStreamGraph.h"
#include "AudioNodeStream.h"
#include "mozilla/Atomics.h"
namespace mozilla {
/**
* This is a MediaStream implementation that acts for a Web Audio node but
* unlike other AudioNodeStreams, supports any kind of MediaStream as an
* input --- handling any number of audio tracks and handling blocking of
* the input MediaStream.
*/
class AudioNodeExternalInputStream final : public AudioNodeStream
{
public:
static already_AddRefed<AudioNodeExternalInputStream>
Create(MediaStreamGraph* aGraph, AudioNodeEngine* aEngine);
protected:
AudioNodeExternalInputStream(AudioNodeEngine* aEngine, TrackRate aSampleRate);
~AudioNodeExternalInputStream();
public:
void ProcessInput(GraphTime aFrom, GraphTime aTo, uint32_t aFlags) override;
private:
/**
* Determines if this is enabled or not. Disabled nodes produce silence.
* This node becomes disabled if the document principal does not subsume the
* DOMMediaStream principal.
*/
bool IsEnabled();
};
} // namespace mozilla
#endif /* MOZILLA_AUDIONODESTREAM_H_ */
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