TTAudioEngine.h File Reference

The TTAudioEngine class is the Audio Engine of Jamoma DSP. More...

#include "TTDSP.h"
#include "TTAudioSignal.h"
#include "portaudio.h"

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Classes
class	TTAudioEngine
	The TTAudioEngine class is the Audio Engine of Jamoma DSP. More...

Typedefs
typedef TTAudioEngine *	TTAudioEnginePtr
	A pointer to a TTAudioEngine.

Functions
int	TTAudioEngineStreamCallback (const void *input, void *output, unsigned long frameCount, const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags, void *userData)
	A C-function used for the callback from PortAudio. More...

Detailed Description

The TTAudioEngine class is the Audio Engine of Jamoma DSP.

TTAudioEngine is a class that is used to drive realtime audio and scheduling operations in the Jamoma DSP environment. It is currently implemented as a wrapper around PortAudio.

QUESTIONS

• Should this be a singleton, like the environment object? Can be associated with a key in the global dictionary namespace
• How do we properly clean-up the environment from something like Max? I guess we need a quittask?

THOUGHTS

• A #TTAudioOutput class will work by writing to the TTAudioEngine's output buffer.
• Likewise a #TTAudioInput class will work by retrieving from the TTAudioEngine's input buffer.
• The scheduler, and others like the Jamoma AudioGraph output class, will subscribe to this class for notifications on each call from PortAudio.
• PortAudio doesn't work on iOS, so perhaps PortAudio should be separated from the AudioEngine and provide audio driver classes to it.

Authors

Tim Place, Nathan Wolek, Trond Lossius

Copyright

Copyright © 2008 by Timothy Place
This code is licensed under the terms of the "New BSD License"
http://creativecommons.org/licenses/BSD/

Definition in file TTAudioEngine.h.

Function Documentation

int TTAudioEngineStreamCallback	(	const void *	input,
		void *	output,
		unsigned long	frameCount,
		const PaStreamCallbackTimeInfo *	timeInfo,
		PaStreamCallbackFlags	statusFlags,
		void *	userData
	)

A C-function used for the callback from PortAudio.

This simply passes the call to the callback method in the TTAudioEngine object.

Definition at line 469 of file TTAudioEngine.cpp.

References TTAudioEngine::callback().

Referenced by TTAudioEngine::initStream().

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