#include "pa_mac_core_internal.h"
#include <string.h>
#include <libkern/OSAtomic.h>
#include "pa_mac_core.h"
#include "pa_mac_core_utilities.h"
#include "pa_mac_core_blocking.h"

Macros
#define	PA_MAC_SMALL_BUFFER_SIZE (64)

#define	RING_BUFFER_ADVANCE_DENOMINATOR (4)

#define	PA_AUHAL_SET_LAST_HOST_ERROR(errorCode, errorText) PaUtil_SetLastHostErrorInfo( paCoreAudio, errorCode, errorText )

#define	ERR_WRAP(mac_err) do { result = mac_err ; line = __LINE__ ; if ( result != noErr ) goto error ; } while(0)

#define	HOST_TIME_TO_PA_TIME(x) ( AudioConvertHostTimeToNanos( (x) ) * 1.0E-09) /* convert to nanoseconds and then to seconds */

#define	RING_BUFFER_EMPTY (1000)

#define	ERR_WRAP(mac_err) do { result = mac_err ; if ( result != noErr ) return ERR(result) ; } while(0)

#define	ERR_WRAP(mac_err) do { result = mac_err ; if ( result != noErr ) return ERR(result) ; } while(0)

Functions
PaError	PaMacCore_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)

void	PaMacCore_SetupStreamInfo (PaMacCoreStreamInfo *data, const unsigned long flags)

void	PaMacCore_SetupChannelMap (PaMacCoreStreamInfo data, const SInt32 const channelMap, const unsigned long channelMapSize)

const char *	PaMacCore_GetChannelName (int device, int channelIndex, bool input)

PaError	PaMacCore_GetBufferSizeRange (PaDeviceIndex device, long minBufferSizeFrames, long maxBufferSizeFrames)

AudioDeviceID	PaMacCore_GetStreamInputDevice (PaStream *s)

AudioDeviceID	PaMacCore_GetStreamOutputDevice (PaStream *s)

Macro Definition Documentation

#define ERR_WRAP ( mac_err ) do { result = mac_err ; line = __LINE__ ; if ( result != noErr ) goto error ; } while(0)

#define ERR_WRAP ( mac_err ) do { result = mac_err ; if ( result != noErr ) return ERR(result) ; } while(0)

#define HOST_TIME_TO_PA_TIME ( x ) ( AudioConvertHostTimeToNanos( (x) ) * 1.0E-09) /* convert to nanoseconds and then to seconds */

#define PA_AUHAL_SET_LAST_HOST_ERROR	(	errorCode,
		errorText
	)	PaUtil_SetLastHostErrorInfo( paCoreAudio, errorCode, errorText )

#define PA_MAC_SMALL_BUFFER_SIZE (64)

#define RING_BUFFER_ADVANCE_DENOMINATOR (4)

#define RING_BUFFER_EMPTY (1000)

Function Documentation

PaError PaMacCore_GetBufferSizeRange	(	PaDeviceIndex	device,
		long *	minBufferSizeFrames,
		long *	maxBufferSizeFrames
	)

Retrieve the range of legal native buffer sizes for the specified device, in sample frames.

Parameters

device	The global index of the PortAudio device about which the query is being made.
minBufferSizeFrames	A pointer to the location which will receive the minimum buffer size value.
maxBufferSizeFrames	A pointer to the location which will receive the maximum buffer size value.

See Also: kAudioDevicePropertyBufferFrameSizeRange in the CoreAudio SDK.

References PaUtilHostApiRepresentation::deviceInfos, PaMacAUHAL::devIds, PaMacAUHAL::inheritedHostApiRep, PaDeviceInfo::maxOutputChannels, paCoreAudio, PaMacCore_AudioDeviceGetProperty(), paNoError, PaUtil_DeviceIndexToHostApiDeviceIndex(), PaUtil_GetHostApiRepresentation(), and WARNING.

const char* PaMacCore_GetChannelName	(	int	device,
		int	channelIndex,
		bool	input
	)

Returns a statically allocated string with the device's name for the given channel. NULL will be returned on failure.

This function's implementation is not complete!

Parameters

device	The PortAudio device index.
channel	The channel number who's name is requested.

Returns: a statically allocated string with the name of the device. Because this string is statically allocated, it must be copied if it is to be saved and used by the user after another call to this function.

References PaUtilHostApiRepresentation::deviceInfos, PaMacAUHAL::devIds, PaDeviceInfo::name, paCoreAudio, PaMacCore_AudioDeviceGetProperty(), PaMacCore_AudioDeviceGetPropertySize(), paNoError, and PaUtil_GetHostApiRepresentation().

AudioDeviceID PaMacCore_GetStreamInputDevice ( PaStream * s )

Retrieve the AudioDeviceID of the input device assigned to an open stream

Parameters

s	The stream to query.

Returns: A valid AudioDeviceID, or NULL if an error occurred.

References PaMacCoreStream::inputDevice, and VVDBUG.

AudioDeviceID PaMacCore_GetStreamOutputDevice ( PaStream * s )

Retrieve the AudioDeviceID of the output device assigned to an open stream

Parameters

s	The stream to query.

Returns: A valid AudioDeviceID, or NULL if an error occurred.

References PaMacCoreStream::outputDevice, and VVDBUG.

PaError PaMacCore_Initialize	(	PaUtilHostApiRepresentation **	hostApi,
		PaHostApiIndex	index
	)

References PaMacAUHAL::allocations, PaMacAUHAL::blockingStreamInterface, PaMacAUHAL::callbackStreamInterface, PaMacAUHAL::defaultIn, PaMacAUHAL::defaultOut, PaMacAUHAL::devCount, PaMacAUHAL::devIds, GetStreamReadAvailable(), GetStreamWriteAvailable(), PaUtilHostApiRepresentation::info, PaMacAUHAL::inheritedHostApiRep, initializeXRunListenerList(), PaUtilHostApiRepresentation::IsFormatSupported, PaUtilHostApiRepresentation::OpenStream, paCoreAudio, paInsufficientMemory, paNoDevice, paNoError, PaUtil_AllocateZeroInitializedMemory(), PaUtil_CreateAllocationGroup(), PaUtil_DestroyAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_FreeAllAllocations(), PaUtil_FreeMemory(), PaUtil_GroupAllocateZeroInitializedMemory(), PaUtil_InitializeStreamInterface(), ReadStream(), PaHostApiInfo::structVersion, PaUtilHostApiRepresentation::Terminate, UNIX_ERR, VVDBUG, and WriteStream().

void PaMacCore_SetupChannelMap	(	PaMacCoreStreamInfo *	data,
		const SInt32 *const	channelMap,
		unsigned long	channelMapSize
	)

call this after pa_SetupMacCoreStreamInfo to use channel mapping as described in notes.txt.

Parameters

data	The stream info structure to assign a channel mapping to
channelMap	The channel map array, as described in notes.txt. This array pointer will be used directly (ie the underlying data will not be copied), so the caller should not free the array until after the stream has been opened.
channelMapSize	The size of the channel map array.

References PaMacCoreStreamInfo::channelMap, and PaMacCoreStreamInfo::channelMapSize.

void PaMacCore_SetupStreamInfo	(	PaMacCoreStreamInfo *	data,
		unsigned long	flags
	)

Functions Use this function to initialize a paMacCoreStreamInfo struct using the requested flags. Note that channel mapping is turned off after a call to this function.

Parameters

data	The datastructure to initialize
flags	The flags to initialize the datastructure with.

References PaMacCoreStreamInfo::channelMap, PaMacCoreStreamInfo::channelMapSize, PaMacCoreStreamInfo::flags, PaMacCoreStreamInfo::hostApiType, paCoreAudio, PaMacCoreStreamInfo::size, and PaMacCoreStreamInfo::version.

Macros

Functions

Macro Definition Documentation

Function Documentation