sounddevice_build.py

from cffi import FFI

ffibuilder = FFI()
ffibuilder.set_source('_sounddevice', None)
ffibuilder.cdef("""
int Pa_GetVersion( void );
const char* Pa_GetVersionText( void );
typedef int PaError;
typedef enum PaErrorCode
{
    paNoError = 0,
    paNotInitialized = -10000,
    paUnanticipatedHostError,
    paInvalidChannelCount,
    paInvalidSampleRate,
    paInvalidDevice,
    paInvalidFlag,
    paSampleFormatNotSupported,
    paBadIODeviceCombination,
    paInsufficientMemory,
    paBufferTooBig,
    paBufferTooSmall,
    paNullCallback,
    paBadStreamPtr,
    paTimedOut,
    paInternalError,
    paDeviceUnavailable,
    paIncompatibleHostApiSpecificStreamInfo,
    paStreamIsStopped,
    paStreamIsNotStopped,
    paInputOverflowed,
    paOutputUnderflowed,
    paHostApiNotFound,
    paInvalidHostApi,
    paCanNotReadFromACallbackStream,
    paCanNotWriteToACallbackStream,
    paCanNotReadFromAnOutputOnlyStream,
    paCanNotWriteToAnInputOnlyStream,
    paIncompatibleStreamHostApi,
    paBadBufferPtr
} PaErrorCode;
const char *Pa_GetErrorText( PaError errorCode );
PaError Pa_Initialize( void );
PaError Pa_Terminate( void );
typedef int PaDeviceIndex;
#define paNoDevice -1
#define paUseHostApiSpecificDeviceSpecification -2
typedef int PaHostApiIndex;
PaHostApiIndex Pa_GetHostApiCount( void );
PaHostApiIndex Pa_GetDefaultHostApi( void );
typedef enum PaHostApiTypeId
{
    paInDevelopment=0,
    paDirectSound=1,
    paMME=2,
    paASIO=3,
    paSoundManager=4,
    paCoreAudio=5,
    paOSS=7,
    paALSA=8,
    paAL=9,
    paBeOS=10,
    paWDMKS=11,
    paJACK=12,
    paWASAPI=13,
    paAudioScienceHPI=14
} PaHostApiTypeId;
typedef struct PaHostApiInfo
{
    int structVersion;
    PaHostApiTypeId type;
    const char *name;
    int deviceCount;
    PaDeviceIndex defaultInputDevice;
    PaDeviceIndex defaultOutputDevice;
} PaHostApiInfo;
const PaHostApiInfo * Pa_GetHostApiInfo( PaHostApiIndex hostApi );
PaHostApiIndex Pa_HostApiTypeIdToHostApiIndex( PaHostApiTypeId type );
PaDeviceIndex Pa_HostApiDeviceIndexToDeviceIndex( PaHostApiIndex hostApi,
        int hostApiDeviceIndex );
typedef struct PaHostErrorInfo{
    PaHostApiTypeId hostApiType;
    long errorCode;
    const char *errorText;
}PaHostErrorInfo;
const PaHostErrorInfo* Pa_GetLastHostErrorInfo( void );
PaDeviceIndex Pa_GetDeviceCount( void );
PaDeviceIndex Pa_GetDefaultInputDevice( void );
PaDeviceIndex Pa_GetDefaultOutputDevice( void );
typedef double PaTime;
typedef unsigned long PaSampleFormat;
#define paFloat32        0x00000001
#define paInt32          0x00000002
#define paInt24          0x00000004
#define paInt16          0x00000008
#define paInt8           0x00000010
#define paUInt8          0x00000020
#define paCustomFormat   0x00010000
#define paNonInterleaved 0x80000000
typedef struct PaDeviceInfo
{
    int structVersion;
    const char *name;
    PaHostApiIndex hostApi;
    int maxInputChannels;
    int maxOutputChannels;
    PaTime defaultLowInputLatency;
    PaTime defaultLowOutputLatency;
    PaTime defaultHighInputLatency;
    PaTime defaultHighOutputLatency;
    double defaultSampleRate;
} PaDeviceInfo;
const PaDeviceInfo* Pa_GetDeviceInfo( PaDeviceIndex device );
typedef struct PaStreamParameters
{
    PaDeviceIndex device;
    int channelCount;
    PaSampleFormat sampleFormat;
    PaTime suggestedLatency;
    void *hostApiSpecificStreamInfo;
} PaStreamParameters;
#define paFormatIsSupported 0
PaError Pa_IsFormatSupported( const PaStreamParameters *inputParameters,
                              const PaStreamParameters *outputParameters,
                              double sampleRate );
typedef void PaStream;
#define paFramesPerBufferUnspecified 0
typedef unsigned long PaStreamFlags;
#define   paNoFlag         0
#define   paClipOff        0x00000001
#define   paDitherOff      0x00000002
#define   paNeverDropInput 0x00000004
#define   paPrimeOutputBuffersUsingStreamCallback 0x00000008
#define   paPlatformSpecificFlags 0xFFFF0000
typedef struct PaStreamCallbackTimeInfo{
    PaTime inputBufferAdcTime;
    PaTime currentTime;
    PaTime outputBufferDacTime;
} PaStreamCallbackTimeInfo;
typedef unsigned long PaStreamCallbackFlags;
#define paInputUnderflow  0x00000001
#define paInputOverflow   0x00000002
#define paOutputUnderflow 0x00000004
#define paOutputOverflow  0x00000008
#define paPrimingOutput   0x00000010
typedef enum PaStreamCallbackResult
{
    paContinue=0,
    paComplete=1,
    paAbort=2
} PaStreamCallbackResult;
typedef int PaStreamCallback(
    const void *input, void *output,
    unsigned long frameCount,
    const PaStreamCallbackTimeInfo* timeInfo,
    PaStreamCallbackFlags statusFlags,
    void *userData );
PaError Pa_OpenStream( PaStream** stream,
                       const PaStreamParameters *inputParameters,
                       const PaStreamParameters *outputParameters,
                       double sampleRate,
                       unsigned long framesPerBuffer,
                       PaStreamFlags streamFlags,
                       PaStreamCallback *streamCallback,
                       void *userData );
PaError Pa_OpenDefaultStream( PaStream** stream,
                              int numInputChannels,
                              int numOutputChannels,
                              PaSampleFormat sampleFormat,
                              double sampleRate,
                              unsigned long framesPerBuffer,
                              PaStreamCallback *streamCallback,
                              void *userData );
PaError Pa_CloseStream( PaStream *stream );
typedef void PaStreamFinishedCallback( void *userData );
PaError Pa_SetStreamFinishedCallback( PaStream *stream,
    PaStreamFinishedCallback* streamFinishedCallback );
PaError Pa_StartStream( PaStream *stream );
PaError Pa_StopStream( PaStream *stream );
PaError Pa_AbortStream( PaStream *stream );
PaError Pa_IsStreamStopped( PaStream *stream );
PaError Pa_IsStreamActive( PaStream *stream );
typedef struct PaStreamInfo
{
    int structVersion;
    PaTime inputLatency;
    PaTime outputLatency;
    double sampleRate;
} PaStreamInfo;
const PaStreamInfo* Pa_GetStreamInfo( PaStream *stream );
PaTime Pa_GetStreamTime( PaStream *stream );
double Pa_GetStreamCpuLoad( PaStream* stream );
PaError Pa_ReadStream( PaStream* stream,
                       void *buffer,
                       unsigned long frames );
PaError Pa_WriteStream( PaStream* stream,
                        const void *buffer,
                        unsigned long frames );
signed long Pa_GetStreamReadAvailable( PaStream* stream );
signed long Pa_GetStreamWriteAvailable( PaStream* stream );
PaHostApiTypeId Pa_GetStreamHostApiType( PaStream* stream );
PaError Pa_GetSampleSize( PaSampleFormat format );
void Pa_Sleep( long msec );

/* pa_mac_core.h */

typedef int32_t SInt32;
typedef struct
{
    unsigned long size;
    PaHostApiTypeId hostApiType;
    unsigned long version;
    unsigned long flags;
    SInt32 const * channelMap;
    unsigned long channelMapSize;
} PaMacCoreStreamInfo;
void PaMacCore_SetupStreamInfo( PaMacCoreStreamInfo *data, unsigned long flags );
void PaMacCore_SetupChannelMap( PaMacCoreStreamInfo *data, const SInt32 * const channelMap, unsigned long channelMapSize );
const char *PaMacCore_GetChannelName( int device, int channelIndex, bool input );
#define paMacCoreChangeDeviceParameters 0x01
#define paMacCoreFailIfConversionRequired 0x02
#define paMacCoreConversionQualityMin    0x0100
#define paMacCoreConversionQualityMedium 0x0200
#define paMacCoreConversionQualityLow    0x0300
#define paMacCoreConversionQualityHigh   0x0400
#define paMacCoreConversionQualityMax    0x0000
#define paMacCorePlayNice                    0x00
#define paMacCorePro                         0x01
#define paMacCoreMinimizeCPUButPlayNice      0x0100
#define paMacCoreMinimizeCPU                 0x0101

/* pa_win_waveformat.h */

typedef unsigned long PaWinWaveFormatChannelMask;

/* pa_asio.h */

#define paAsioUseChannelSelectors 0x01

typedef struct PaAsioStreamInfo
{
    unsigned long size;
    PaHostApiTypeId hostApiType;
    unsigned long version;
    unsigned long flags;
    int *channelSelectors;
} PaAsioStreamInfo;

/* pa_win_wasapi.h */

typedef enum PaWasapiFlags
{
    paWinWasapiExclusive                = 1,
    paWinWasapiRedirectHostProcessor    = 2,
    paWinWasapiUseChannelMask           = 4,
    paWinWasapiPolling                  = 8,
    paWinWasapiThreadPriority           = 16,
    paWinWasapiExplicitSampleFormat     = 32,
    paWinWasapiAutoConvert              = 64
} PaWasapiFlags;

typedef void (*PaWasapiHostProcessorCallback) (
    void *inputBuffer,  long inputFrames,
    void *outputBuffer, long outputFrames, void *userData);

typedef enum PaWasapiThreadPriority
{
    eThreadPriorityNone = 0,
    eThreadPriorityAudio,
    eThreadPriorityCapture,
    eThreadPriorityDistribution,
    eThreadPriorityGames,
    eThreadPriorityPlayback,
    eThreadPriorityProAudio,
    eThreadPriorityWindowManager
} PaWasapiThreadPriority;

typedef enum PaWasapiStreamCategory
{
    eAudioCategoryOther           = 0,
    eAudioCategoryCommunications  = 3,
    eAudioCategoryAlerts          = 4,
    eAudioCategorySoundEffects    = 5,
    eAudioCategoryGameEffects     = 6,
    eAudioCategoryGameMedia       = 7,
    eAudioCategoryGameChat        = 8,
    eAudioCategorySpeech          = 9,
    eAudioCategoryMovie           = 10,
    eAudioCategoryMedia           = 11
} PaWasapiStreamCategory;

typedef enum PaWasapiStreamOption
{
    eStreamOptionNone        = 0,
    eStreamOptionRaw         = 1,
    eStreamOptionMatchFormat = 2
} PaWasapiStreamOption;

typedef struct PaWasapiStreamInfo
{
    unsigned long size;
    PaHostApiTypeId hostApiType;
    unsigned long version;
    unsigned long flags;
    PaWinWaveFormatChannelMask channelMask;
    PaWasapiHostProcessorCallback hostProcessorOutput;
    PaWasapiHostProcessorCallback hostProcessorInput;
    PaWasapiThreadPriority threadPriority;
    PaWasapiStreamCategory streamCategory;
    PaWasapiStreamOption streamOption;
} PaWasapiStreamInfo;

PaError PaWasapi_UpdateDeviceList();

int PaWasapi_IsLoopback( PaDeviceIndex device );
""")

if __name__ == '__main__':
    ffibuilder.compile(tmpdir='src', verbose=True)