dxd::engine Class Reference

#include <dxd_audio.h>

Inheritance diagram for dxd::engine:

Collaboration diagram for dxd::engine:

Public Member Functions
::IOReturn	clipOutputSamples (const void *src, void *dst, UInt32 offset, UInt32 frames, const::IOAudioStreamFormat *fmt,::IOAudioStream *stream)
::IOReturn	convertInputSamples (const void *src, void *dst, UInt32 offset, UInt32 frames, const::IOAudioStreamFormat *fmt,::IOAudioStream *stream)
UInt32	getCurrentSampleFrame ()
	realtime sample frame hardware position
::IOReturn	getLoopCountAndTimeStamp (UInt32 *loops,::AbsoluteTime *timestamp)
bool	initHardware (::IOService *provider)
	configure IOAudioEngine and setup streams
::IOReturn	performAudioEngineStart ()
::IOReturn	performAudioEngineStop ()
::IOReturn	performFormatChange (::IOAudioStream *stream, const::IOAudioStreamFormat *fmt, const::IOAudioSampleRate *clk)

Public Attributes
dxd::device *	device

Member Function Documentation

clipOutputSamples()

::IOReturn dxd::engine::clipOutputSamples ( const void * src, void * dst, UInt32 offset, UInt32 frames, const::IOAudioStreamFormat * fmt, ::IOAudioStream * stream )

inline

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convertInputSamples()

::IOReturn dxd::engine::convertInputSamples ( const void * src, void * dst, UInt32 offset, UInt32 frames, const::IOAudioStreamFormat * fmt, ::IOAudioStream * stream )

inline

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getCurrentSampleFrame()

UInt32 dxd::engine::getCurrentSampleFrame ( )

inline

realtime sample frame hardware position

getLoopCountAndTimeStamp()

::IOReturn dxd::engine::getLoopCountAndTimeStamp ( UInt32 * loops, ::AbsoluteTime * timestamp )

inline

initHardware()

bool dxd::engine::initHardware ( ::IOService * provider )

inline

configure IOAudioEngine and setup streams

retrieve support range of sample rates retrieved from the device driver Create an IOAudioStream for each buffer and add it to this audio engine iterate thru all format descriptions from USB bus driver, select and add to CoreAudio's list of available formats

creates and initializes the IOAudioStream

set latencies and CoreAudio safty offsets

Todo

compute latencies and CoreAudio safty offsets

Todo

release audiostream

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performAudioEngineStart()

::IOReturn dxd::engine::performAudioEngineStart ( )

inline

performAudioEngineStop()

::IOReturn dxd::engine::performAudioEngineStop ( )

inline

performFormatChange()

::IOReturn dxd::engine::performFormatChange ( ::IOAudioStream * stream, const::IOAudioStreamFormat * fmt, const::IOAudioSampleRate * clk )

inline

Member Data Documentation

device

dxd::device* dxd::engine::device

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The documentation for this class was generated from the following file:

• dxd_audio.h