pa_mac_core_utilities.c File Reference

#include "pa_mac_core_utilities.h"
#include "pa_mac_core_internal.h"
#include <libkern/OSAtomic.h>
#include <strings.h>
#include <pthread.h>

Data Structures
struct	PaMacXRunListNode_s
Typedefs
typedef struct PaMacXRunListNode_s	PaMacXRunListNode
Functions
PaError	PaMacCore_SetUnixError (int err, int line)
PaError	PaMacCore_SetError (OSStatus error, int line, int isError)
long	computeRingBufferSize (const PaStreamParameters *inputParameters, const PaStreamParameters *outputParameters, long inputFramesPerBuffer, long outputFramesPerBuffer, double sampleRate)
OSStatus	propertyProc (AudioDeviceID inDevice, UInt32 inChannel, Boolean isInput, AudioDevicePropertyID inPropertyID, void *inClientData)
PaError	AudioDeviceSetPropertyNowAndWaitForChange (AudioDeviceID inDevice, UInt32 inChannel, Boolean isInput, AudioDevicePropertyID inPropertyID, UInt32 inPropertyDataSize, const void *inPropertyData, void *outPropertyData)
PaError	setBestSampleRateForDevice (const AudioDeviceID device, const bool isOutput, const bool requireExact, const Float64 desiredSrate)
PaError	setBestFramesPerBuffer (const AudioDeviceID device, const bool isOutput, UInt32 requestedFramesPerBuffer, UInt32 *actualFramesPerBuffer)
OSStatus	xrunCallback (AudioDeviceID inDevice, UInt32 inChannel, Boolean isInput, AudioDevicePropertyID inPropertyID, void *inClientData)
int	initializeXRunListenerList ()
int	destroyXRunListenerList ()
void *	addToXRunListenerList (void *stream)
int	removeFromXRunListenerList (void *stream)

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Detailed Description

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Typedef Documentation

typedef struct PaMacXRunListNode_s PaMacXRunListNode

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Function Documentation

void* addToXRunListenerList

(

void *

stream

)

Returns the list, so that it can be passed to CorAudio.

References PaMacXRunListNode_s::next, and PaMacXRunListNode_s::stream.

PaError AudioDeviceSetPropertyNowAndWaitForChange	(	AudioDeviceID	inDevice,
		UInt32	inChannel,
		Boolean	isInput,
		AudioDevicePropertyID	inPropertyID,
		UInt32	inPropertyDataSize,
		const void *	inPropertyData,
		void *	outPropertyData
	)

References DBUG, ERR, FALSE, MutexAndBool::mutex, MutexAndBool::once, paInternalError, paNoError, paUnanticipatedHostError, and propertyProc().

Referenced by setBestSampleRateForDevice().

long computeRingBufferSize	(	const PaStreamParameters *	inputParameters,
		const PaStreamParameters *	outputParameters,
		long	inputFramesPerBuffer,
		long	outputFramesPerBuffer,
		double	sampleRate
	)

References PaStreamParameters::channelCount, PaStreamParameters::suggestedLatency, VDBUG, and VVDBUG.

int destroyXRunListenerList

(

)

returns zero on success or a unix style error code.

References PaMacXRunListNode_s::next.

int initializeXRunListenerList

(

)

returns zero on success or a unix style error code.

Referenced by PaMacCore_Initialize().

PaError PaMacCore_SetError	(	OSStatus	error,
		int	line,
		int	isError
	)

References DBUG, paBadStreamPtr, paCoreAudio, paDeviceUnavailable, paInternalError, paInvalidDevice, paNoError, paSampleFormatNotSupported, and PaUtil_SetLastHostErrorInfo().

PaError PaMacCore_SetUnixError	(	int	err,
		int	line
	)

Map Unix error to PaError. Pretty much the only one that maps is ENOMEM.

References DBUG, paCoreAudio, paInsufficientMemory, paInternalError, paNoError, and PaUtil_SetLastHostErrorInfo().

Referenced by initializeBlioRingBuffers().

OSStatus propertyProc	(	AudioDeviceID	inDevice,
		UInt32	inChannel,
		Boolean	isInput,
		AudioDevicePropertyID	inPropertyID,
		void *	inClientData
	)

References MutexAndBool::mutex, MutexAndBool::once, and TRUE.

Referenced by AudioDeviceSetPropertyNowAndWaitForChange().

int removeFromXRunListenerList

(

void *

stream

)

Returns the number of Listeners in the list remaining.

References PaMacXRunListNode_s::next, and PaMacXRunListNode_s::stream.

PaError setBestFramesPerBuffer	(	const AudioDeviceID	device,
		const bool	isOutput,
		UInt32	requestedFramesPerBuffer,
		UInt32 *	actualFramesPerBuffer
	)

References ERR, paInsufficientMemory, paNoError, and VDBUG.

PaError setBestSampleRateForDevice	(	const AudioDeviceID	device,
		const bool	isOutput,
		const bool	requireExact,
		const Float64	desiredSrate
	)

References AudioDeviceSetPropertyNowAndWaitForChange(), ERR, paInsufficientMemory, paInternalError, paInvalidSampleRate, paNoError, and VDBUG.

OSStatus xrunCallback	(	AudioDeviceID	inDevice,
		UInt32	inChannel,
		Boolean	isInput,
		AudioDevicePropertyID	inPropertyID,
		void *	inClientData
	)

References PaMacCoreStream::inputDevice, PaMacXRunListNode_s::next, PaMacCoreStream::outputDevice, paInputOverflow, paOutputUnderflow, PaMacCoreStream::state, PaMacXRunListNode_s::stream, and PaMacCoreStream::xrunFlags.