/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 AudioBufferSourceNode_h_
#define AudioBufferSourceNode_h_
#include "AudioScheduledSourceNode.h"
#include "AudioBuffer.h"
namespace mozilla::dom {
struct AudioBufferSourceOptions;
class AudioParam;
class AudioBufferSourceNode final :
public AudioScheduledSourceNode,
public MainThreadMediaTrackListener {
public:
static already_AddRefed<AudioBufferSourceNode> Create(
JSContext* aCx, AudioContext& aAudioContext,
const AudioBufferSourceOptions& aOptions);
void DestroyMediaTrack() override;
uint16_t NumberOfInputs()
const final {
return 0; }
AudioBufferSourceNode* AsAudioBufferSourceNode() override {
return this; }
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioBufferSourceNode,
AudioScheduledSourceNode)
static already_AddRefed<AudioBufferSourceNode> Constructor(
const GlobalObject& aGlobal, AudioContext& aAudioContext,
const AudioBufferSourceOptions& aOptions) {
return Create(aGlobal.Context(), aAudioContext, aOptions);
}
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
void Start(
double aWhen,
double aOffset,
const Optional<
double>& aDuration,
ErrorResult& aRv);
void Start(
double aWhen, ErrorResult& aRv) override;
void Stop(
double aWhen, ErrorResult& aRv) override;
AudioBuffer* GetBuffer(JSContext* aCx)
const {
return mBuffer; }
void SetBuffer(JSContext* aCx, AudioBuffer* aBuffer, ErrorResult& aRv) {
if (aBuffer && mBufferSet) {
aRv.ThrowInvalidStateError(
"Cannot set the buffer attribute of an AudioBufferSourceNode "
"with an AudioBuffer more than once");
return;
}
if (aBuffer) {
mBufferSet =
true;
}
mBuffer = aBuffer;
SendBufferParameterToTrack(aCx);
SendLoopParametersToTrack();
}
AudioParam* PlaybackRate()
const {
return mPlaybackRate; }
AudioParam* Detune()
const {
return mDetune; }
bool Loop()
const {
return mLoop; }
void SetLoop(
bool aLoop) {
mLoop = aLoop;
SendLoopParametersToTrack();
}
double LoopStart()
const {
return mLoopStart; }
void SetLoopStart(
double aStart) {
mLoopStart = aStart;
SendLoopParametersToTrack();
}
double LoopEnd()
const {
return mLoopEnd; }
void SetLoopEnd(
double aEnd) {
mLoopEnd = aEnd;
SendLoopParametersToTrack();
}
void NotifyMainThreadTrackEnded() override;
const char* NodeType()
const override {
return "AudioBufferSourceNode"; }
size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf)
const override;
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf)
const override;
private:
explicit AudioBufferSourceNode(AudioContext* aContext);
~AudioBufferSourceNode() =
default;
friend class AudioBufferSourceNodeEngine;
// START is sent during Start().
// STOP is sent during Stop().
// BUFFERSTART and DURATION are sent when SetBuffer() and Start() have
// been called (along with sending the buffer).
enum EngineParameters {
SAMPLE_RATE,
START,
STOP,
// BUFFERSTART is the "offset" passed to start(), multiplied by
// buffer.sampleRate.
BUFFERSTART,
DURATION,
LOOP,
LOOPSTART,
LOOPEND,
PLAYBACKRATE,
DETUNE
};
void SendLoopParametersToTrack();
void SendBufferParameterToTrack(JSContext* aCx);
void SendOffsetAndDurationParametersToTrack(AudioNodeTrack* aTrack);
double mLoopStart;
double mLoopEnd;
double mOffset;
double mDuration;
RefPtr<AudioBuffer> mBuffer;
RefPtr<AudioParam> mPlaybackRate;
RefPtr<AudioParam> mDetune;
bool mLoop;
bool mStartCalled;
bool mBufferSet;
};
}
// namespace mozilla::dom
#endif
