summaryrefslogtreecommitdiffstats
path: root/dom/media/webaudio/AudioBufferSourceNode.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--dom/media/webaudio/AudioBufferSourceNode.h129
1 files changed, 129 insertions, 0 deletions
diff --git a/dom/media/webaudio/AudioBufferSourceNode.h b/dom/media/webaudio/AudioBufferSourceNode.h
new file mode 100644
index 0000000000..9a3861555c
--- /dev/null
+++ b/dom/media/webaudio/AudioBufferSourceNode.h
@@ -0,0 +1,129 @@
+/* -*- 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