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25 #ifndef AudioDestinationNode_h
26 #define AudioDestinationNode_h
28 #include "AudioBuffer.h"
29 #include "AudioNode.h"
30 #include "AudioSourceProvider.h"
37 class AudioDestinationNode : public AudioNode, public AudioSourceProvider {
39 AudioDestinationNode(AudioContext*, double sampleRate);
40 virtual ~AudioDestinationNode();
43 virtual void process(size_t) { }; // we're pulled by hardware so this is never called
44 virtual void reset() { m_currentTime = 0.0; };
46 // The audio hardware calls here periodically to gets its input stream.
47 virtual void provideInput(AudioBus*, size_t numberOfFrames);
49 double currentTime() { return m_currentTime; }
51 virtual double sampleRate() const = 0;
53 virtual unsigned numberOfChannels() const { return 2; } // FIXME: update when multi-channel (more than stereo) is supported
55 virtual void startRendering() = 0;
61 } // namespace WebCore
63 #endif // AudioDestinationNode_h