michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef AudioBufferSourceNode_h_
michael@0: #define AudioBufferSourceNode_h_
michael@0: 
michael@0: #include "AudioNode.h"
michael@0: #include "AudioBuffer.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class AudioParam;
michael@0: 
michael@0: class AudioBufferSourceNode : public AudioNode,
michael@0:                               public MainThreadMediaStreamListener
michael@0: {
michael@0: public:
michael@0:   explicit AudioBufferSourceNode(AudioContext* aContext);
michael@0:   virtual ~AudioBufferSourceNode();
michael@0: 
michael@0:   virtual void DestroyMediaStream() MOZ_OVERRIDE
michael@0:   {
michael@0:     if (mStream) {
michael@0:       mStream->RemoveMainThreadListener(this);
michael@0:     }
michael@0:     AudioNode::DestroyMediaStream();
michael@0:   }
michael@0:   virtual uint16_t NumberOfInputs() const MOZ_FINAL MOZ_OVERRIDE
michael@0:   {
michael@0:     return 0;
michael@0:   }
michael@0:   virtual AudioBufferSourceNode* AsAudioBufferSourceNode() MOZ_OVERRIDE
michael@0:   {
michael@0:     return this;
michael@0:   }
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioBufferSourceNode, AudioNode)
michael@0: 
michael@0:   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
michael@0: 
michael@0:   void Start(double aWhen, double aOffset,
michael@0:              const Optional<double>& aDuration, ErrorResult& aRv);
michael@0:   void Stop(double aWhen, ErrorResult& aRv);
michael@0: 
michael@0:   AudioBuffer* GetBuffer(JSContext* aCx) const
michael@0:   {
michael@0:     return mBuffer;
michael@0:   }
michael@0:   void SetBuffer(JSContext* aCx, AudioBuffer* aBuffer)
michael@0:   {
michael@0:     mBuffer = aBuffer;
michael@0:     SendBufferParameterToStream(aCx);
michael@0:     SendLoopParametersToStream();
michael@0:   }
michael@0:   AudioParam* PlaybackRate() const
michael@0:   {
michael@0:     return mPlaybackRate;
michael@0:   }
michael@0:   bool Loop() const
michael@0:   {
michael@0:     return mLoop;
michael@0:   }
michael@0:   void SetLoop(bool aLoop)
michael@0:   {
michael@0:     mLoop = aLoop;
michael@0:     SendLoopParametersToStream();
michael@0:   }
michael@0:   double LoopStart() const
michael@0:   {
michael@0:     return mLoopStart;
michael@0:   }
michael@0:   void SetLoopStart(double aStart)
michael@0:   {
michael@0:     mLoopStart = aStart;
michael@0:     SendLoopParametersToStream();
michael@0:   }
michael@0:   double LoopEnd() const
michael@0:   {
michael@0:     return mLoopEnd;
michael@0:   }
michael@0:   void SetLoopEnd(double aEnd)
michael@0:   {
michael@0:     mLoopEnd = aEnd;
michael@0:     SendLoopParametersToStream();
michael@0:   }
michael@0:   void SendDopplerShiftToStream(double aDopplerShift);
michael@0: 
michael@0:   IMPL_EVENT_HANDLER(ended)
michael@0: 
michael@0:   virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual const char* NodeType() const
michael@0:   {
michael@0:     return "AudioBufferSourceNode";
michael@0:   }
michael@0: 
michael@0:   virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
michael@0:   virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
michael@0: 
michael@0: private:
michael@0:   friend class AudioBufferSourceNodeEngine;
michael@0:   // START is sent during Start().
michael@0:   // STOP is sent during Stop().
michael@0:   // BUFFERSTART and BUFFEREND are sent when SetBuffer() and Start() have
michael@0:   // been called (along with sending the buffer).
michael@0:   enum EngineParameters {
michael@0:     SAMPLE_RATE,
michael@0:     START,
michael@0:     STOP,
michael@0:     // BUFFERSTART is the "offset" passed to start(), multiplied by
michael@0:     // buffer.sampleRate.
michael@0:     BUFFERSTART,
michael@0:     // BUFFEREND is the sum of "offset" and "duration" passed to start(),
michael@0:     // multiplied by buffer.sampleRate, or the size of the buffer, if smaller.
michael@0:     BUFFEREND,
michael@0:     LOOP,
michael@0:     LOOPSTART,
michael@0:     LOOPEND,
michael@0:     PLAYBACKRATE,
michael@0:     DOPPLERSHIFT
michael@0:   };
michael@0: 
michael@0:   void SendLoopParametersToStream();
michael@0:   void SendBufferParameterToStream(JSContext* aCx);
michael@0:   void SendOffsetAndDurationParametersToStream(AudioNodeStream* aStream);
michael@0:   static void SendPlaybackRateToStream(AudioNode* aNode);
michael@0: 
michael@0: private:
michael@0:   double mLoopStart;
michael@0:   double mLoopEnd;
michael@0:   double mOffset;
michael@0:   double mDuration;
michael@0:   nsRefPtr<AudioBuffer> mBuffer;
michael@0:   nsRefPtr<AudioParam> mPlaybackRate;
michael@0:   bool mLoop;
michael@0:   bool mStartCalled;
michael@0:   bool mStopped;
michael@0: };
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif
michael@0: