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