PortAudio  2.0
Functions | Variables
pa_unix_hostapis.c File Reference
Source code common to all Unix implementations
#include "pa_hostapi.h"

Functions

PaError PaJack_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaPulseAudio_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaAlsa_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaSndio_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaOSS_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaAudioIO_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaSGI_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaAsiHpi_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaMacCore_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 
PaError PaSkeleton_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index)
 

Variables

PaUtilHostApiInitializer * paHostApiInitializers []
 

Function Documentation

PaError PaAlsa_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  hostApiIndex 
)

Uncommented because AlsaErrorHandler is unused for anything good yet. If AlsaErrorHandler is to be used, do not forget to register this callback in PaAlsa_Initialize, and unregister in Terminate.

If AlsaErrorHandler is to be used, do not forget to unregister callback pointer in Terminate function.

References PaAlsaHostApiRepresentation::allocations, PaAlsaHostApiRepresentation::alsaLibVersion, PaAlsaHostApiRepresentation::blockingStreamInterface, PaAlsaHostApiRepresentation::callbackStreamInterface, PaAlsaHostApiRepresentation::hostApiIndex, PA_ENSURE, PA_UNLESS, paALSA, paHostApiNotFound, paInsufficientMemory, paNoError, PaUnixThreading_Initialize(), PaUtil_AllocateZeroInitializedMemory(), PaUtil_CreateAllocationGroup(), PaUtil_DestroyAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_FreeAllAllocations(), PaUtil_FreeMemory(), and PaUtil_InitializeStreamInterface().

PaError PaAsiHpi_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)

Initialize host API implementation. This is the only function exported beyond this file. It is called by PortAudio to initialize the host API. It stores API info, finds and registers all devices, and sets up callback and blocking interfaces.

Parameters
hostApiPointer to host API struct
hostApiIndexIndex of current (HPI) host API
Returns
PortAudio error code

References PaAsiHpiHostApiRepresentation::allocations, PaAsiHpiHostApiRepresentation::baseHostApiRep, PaAsiHpiHostApiRepresentation::blockingStreamInterface, PaAsiHpiHostApiRepresentation::callbackStreamInterface, PaHostApiInfo::defaultInputDevice, PaHostApiInfo::defaultOutputDevice, PaHostApiInfo::deviceCount, PaAsiHpiHostApiRepresentation::hostApiIndex, PaHostApiInfo::name, PA_ASIHPI_UNLESS_, PA_DEBUG, PA_ENSURE_, PA_UNLESS_, paAudioScienceHPI, paInsufficientMemory, paNoDevice, paNoError, paUnanticipatedHostError, PaUnixThreading_Initialize(), PaUtil_AllocateZeroInitializedMemory(), PaUtil_CreateAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_FreeMemory(), PaUtil_InitializeStreamInterface(), PaHostApiInfo::structVersion, and PaHostApiInfo::type.

PaError PaAudioIO_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)

References PaAudioIOHostApiRepresentation::allocations, AUDIO_ENCODING_SLINEAR, AUDIO_GETBUFINFO, AUDIOIO_DEFAULT_MAX_CHANNELS, AUDIOIO_DEV_DEFAULT, AUDIOIO_DEV_PREFIX, AUDIOIO_MAX_DEVICES, PaAudioIOHostApiRepresentation::blockingStreamInterface, PaAudioIOHostApiRepresentation::callbackStreamInterface, PaDeviceInfo::defaultHighInputLatency, PaDeviceInfo::defaultHighOutputLatency, PaHostApiInfo::defaultInputDevice, PaDeviceInfo::defaultLowInputLatency, PaDeviceInfo::defaultLowOutputLatency, PaHostApiInfo::defaultOutputDevice, PaDeviceInfo::defaultSampleRate, PaHostApiInfo::deviceCount, PaUtilHostApiRepresentation::deviceInfos, PaDeviceInfo::hostApi, PaUtilHostApiRepresentation::info, PaAudioIOHostApiRepresentation::inheritedHostApiRep, PaUtilHostApiRepresentation::IsFormatSupported, PaDeviceInfo::maxInputChannels, PaDeviceInfo::maxOutputChannels, PaHostApiInfo::name, PaDeviceInfo::name, PaUtilHostApiRepresentation::OpenStream, PA_UNLESS, paAudioIO, paInsufficientMemory, paNoDevice, paNoError, PaUtil_CreateAllocationGroup(), PaUtil_DestroyAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_FreeAllAllocations(), PaUtil_GroupAllocateZeroInitializedMemory(), PaUtil_InitializeStreamInterface(), PaHostApiInfo::structVersion, PaDeviceInfo::structVersion, PaUtilHostApiRepresentation::Terminate, and PaHostApiInfo::type.

PaError PaJack_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)
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().

PaError PaOSS_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  hostApiIndex 
)

Initialize the OSS API implementation.

This function will initialize host API datastructures and query host devices for information.

Aspect DeviceCapabilities: Enumeration of host API devices is initiated from here

Aspect FreeResources: If an error is encountered under way we have to free each resource allocated in this function, this happens with the usual "error" label.

References PaOSSHostApiRepresentation::allocations, PaOSSHostApiRepresentation::blockingStreamInterface, PaOSSHostApiRepresentation::callbackStreamInterface, GetStreamReadAvailable(), GetStreamWriteAvailable(), PaOSSHostApiRepresentation::hostApiIndex, PaUtilHostApiRepresentation::info, PaOSSHostApiRepresentation::inheritedHostApiRep, PA_ENSURE, PA_UNLESS, paInsufficientMemory, paNoError, paOSS, PaUtil_AllocateZeroInitializedMemory(), PaUtil_CreateAllocationGroup(), PaUtil_DestroyAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_FreeAllAllocations(), PaUtil_FreeMemory(), PaUtil_InitializeStreamInterface(), ReadStream(), PaHostApiInfo::structVersion, and WriteStream().

PaError PaPulseAudio_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)

References _PaPulseAudio_AddAudioDevice(), PaPulseAudio_HostApiRepresentation::allocations, PaPulseAudio_HostApiRepresentation::blockingStreamInterface, PaPulseAudio_HostApiRepresentation::callbackStreamInterface, PaPulseAudio_HostApiRepresentation::context, PaHostApiInfo::defaultInputDevice, PaHostApiInfo::defaultOutputDevice, PaPulseAudio_HostApiRepresentation::deviceCount, PaPulseAudio_HostApiRepresentation::deviceInfoArray, GetStreamCpuLoad(), GetStreamTime(), PaPulseAudio_HostApiRepresentation::hostApiIndex, PaUtilHostApiRepresentation::info, PaPulseAudio_HostApiRepresentation::inheritedHostApiRep, IsFormatSupported(), IsStreamActive(), IsStreamStopped(), PaPulseAudio_HostApiRepresentation::mainloop, OpenStream(), PA_DEBUG, PA_PULSEAUDIO_DEFAULT_MAX_LATENCY, PA_PULSEAUDIO_DEFAULT_MIN_LATENCY, PA_PULSEAUDIO_SET_LAST_HOST_ERROR, paInsufficientMemory, paNoDevice, paNoError, paPulseAudio, PaPulseAudio_AbortStreamCb(), PaPulseAudio_CheckConnection(), PaPulseAudio_CloseStreamCb(), PaPulseAudio_Free(), PaPulseAudio_GetStreamReadAvailableBlock(), PaPulseAudio_Lock(), PAPULSEAUDIO_MAX_DEVICECOUNT, PaPulseAudio_New(), PaPulseAudio_ReadStreamBlock(), PaPulseAudio_ReleaseOperation(), PaPulseAudio_ServerInfoCb(), PaPulseAudio_SinkListCb(), PaPulseAudio_SourceListCb(), PaPulseAudio_StartStreamCb(), PaPulseAudio_StopStreamCb(), PaPulseAudio_UnLock(), PaPulseAudio_WriteStreamBlock(), paUnanticipatedHostError, PaUtil_CreateAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_GroupAllocateZeroInitializedMemory(), PaUtil_InitializeStreamInterface(), PaPulseAudio_HostApiRepresentation::pulseaudioDefaultSampleSpec, PaPulseAudio_HostApiRepresentation::pulseaudioDeviceNames, PaHostApiInfo::structVersion, and Terminate().

PaError PaSGI_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)
PaError PaSkeleton_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)
PaError PaSndio_Initialize ( PaUtilHostApiRepresentation **  hostApi,
PaHostApiIndex  index 
)

References PaSndioHostApiRepresentation::audioDevices, PaSndioHostApiRepresentation::base, PaSndioHostApiRepresentation::blocking, PaSndioHostApiRepresentation::callback, PaSndioHostApiRepresentation::deviceInfoPtrs, PaSndioHostApiRepresentation::deviceInfos, GetStreamTime(), PaUtilHostApiRepresentation::info, IsFormatSupported(), IsStreamActive(), IsStreamStopped(), OpenStream(), PA_DEBUG, PA_SNDIO_AUDIODEVICES_MAX, paNoError, paSndio, PaUtil_AllocateZeroInitializedMemory(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_InitializeStreamInterface(), PaHostApiInfo::structVersion, and Terminate().

Variable Documentation

PaUtilHostApiInitializer* paHostApiInitializers[]

Note that on Linux, ALSA is placed before OSS so that the former is preferred over the latter.

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