/* -*- 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_FORWARDEDINPUTTRACK_H_
#define MOZILLA_FORWARDEDINPUTTRACK_H_
#include "MediaTrackGraph.h"
#include "MediaTrackListener.h"
#include <algorithm>
namespace mozilla {
/**
* See MediaTrackGraph::CreateForwardedInputTrack.
*/
class ForwardedInputTrack :
public ProcessedMediaTrack {
public:
ForwardedInputTrack(TrackRate aSampleRate, MediaSegment::Type aType);
virtual ForwardedInputTrack* AsForwardedInputTrack() override {
return this; }
friend class DOMMediaStream;
void AddInput(MediaInputPort* aPort) override;
void RemoveInput(MediaInputPort* aPort) override;
void ProcessInput(GraphTime aFrom, GraphTime aTo, uint32_t aFlags) override;
DisabledTrackMode CombinedDisabledMode()
const override;
void SetDisabledTrackModeImpl(DisabledTrackMode aMode) override;
void OnInputDisabledModeChanged(DisabledTrackMode aInputMode) override;
uint32_t NumberOfChannels()
const override;
friend class MediaTrackGraphImpl;
protected:
// Set up this track from a specific input.
void SetInput(MediaInputPort* aPort);
// MediaSegment-agnostic ProcessInput.
void ProcessInputImpl(MediaTrack* aSource, MediaSegment* aSegment,
GraphTime aFrom, GraphTime aTo, uint32_t aFlags);
void AddDirectListenerImpl(
already_AddRefed<DirectMediaTrackListener> aListener) override;
void RemoveDirectListenerImpl(DirectMediaTrackListener* aListener) override;
void RemoveAllDirectListenersImpl() override;
// These are direct track listeners that have been added to this
// ForwardedInputTrack-track. While an input is set, these are forwarded to
// the input track. We will update these when this track's disabled status
// changes.
nsTArray<RefPtr<DirectMediaTrackListener>> mOwnedDirectListeners;
// Set if an input has been added, nullptr otherwise. Adding more than one
// input is an error.
MediaInputPort* mInputPort = nullptr;
// This track's input's associated disabled mode. ENABLED if there is no
// input. This is used with MediaTrackListener::NotifyEnabledStateChanged(),
// which affects only video tracks. This is set only on ForwardedInputTracks.
DisabledTrackMode mInputDisabledMode = DisabledTrackMode::ENABLED;
};
}
// namespace mozilla
#endif /* MOZILLA_FORWARDEDINPUTTRACK_H_ */
