00001 #ifndef PORTAUDIO_H
00002 #define PORTAUDIO_H
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00048 #ifdef __cplusplus
00049 extern "C"
00050 {
00051 #endif
00052
00053
00057 int Pa_GetVersion( void );
00058
00059
00063 const char* Pa_GetVersionText( void );
00064
00065
00070 typedef int PaError;
00071 typedef enum PaErrorCode
00072 {
00073 paNoError = 0,
00074
00075 paNotInitialized = -10000,
00076 paUnanticipatedHostError,
00077 paInvalidChannelCount,
00078 paInvalidSampleRate,
00079 paInvalidDevice,
00080 paInvalidFlag,
00081 paSampleFormatNotSupported,
00082 paBadIODeviceCombination,
00083 paInsufficientMemory,
00084 paBufferTooBig,
00085 paBufferTooSmall,
00086 paNullCallback,
00087 paBadStreamPtr,
00088 paTimedOut,
00089 paInternalError,
00090 paDeviceUnavailable,
00091 paIncompatibleHostApiSpecificStreamInfo,
00092 paStreamIsStopped,
00093 paStreamIsNotStopped,
00094 paInputOverflowed,
00095 paOutputUnderflowed,
00096 paHostApiNotFound,
00097 paInvalidHostApi,
00098 paCanNotReadFromACallbackStream,
00099 paCanNotWriteToACallbackStream,
00100 paCanNotReadFromAnOutputOnlyStream,
00101 paCanNotWriteToAnInputOnlyStream,
00102 paIncompatibleStreamHostApi,
00103 paBadBufferPtr
00104 } PaErrorCode;
00105
00106
00110 const char *Pa_GetErrorText( PaError errorCode );
00111
00112
00132 PaError Pa_Initialize( void );
00133
00134
00151 PaError Pa_Terminate( void );
00152
00153
00154
00161 typedef int PaDeviceIndex;
00162
00163
00169 #define paNoDevice ((PaDeviceIndex)-1)
00170
00171
00177 #define paUseHostApiSpecificDeviceSpecification ((PaDeviceIndex)-2)
00178
00179
00180
00181
00187 typedef int PaHostApiIndex;
00188
00189
00199 PaHostApiIndex Pa_GetHostApiCount( void );
00200
00201
00210 PaHostApiIndex Pa_GetDefaultHostApi( void );
00211
00212
00224 typedef enum PaHostApiTypeId
00225 {
00226 paInDevelopment=0,
00227 paDirectSound=1,
00228 paMME=2,
00229 paASIO=3,
00230 paSoundManager=4,
00231 paCoreAudio=5,
00232 paOSS=7,
00233 paALSA=8,
00234 paAL=9,
00235 paBeOS=10,
00236 paWDMKS=11,
00237 paJACK=12,
00238 paWASAPI=13,
00239 paAudioScienceHPI=14
00240 } PaHostApiTypeId;
00241
00242
00245 typedef struct PaHostApiInfo
00246 {
00248 int structVersion;
00250 PaHostApiTypeId type;
00252 const char *name;
00253
00259 int deviceCount;
00260
00265 PaDeviceIndex defaultInputDevice;
00266
00271 PaDeviceIndex defaultOutputDevice;
00272
00273 } PaHostApiInfo;
00274
00275
00289 const PaHostApiInfo * Pa_GetHostApiInfo( PaHostApiIndex hostApi );
00290
00291
00307 PaHostApiIndex Pa_HostApiTypeIdToHostApiIndex( PaHostApiTypeId type );
00308
00309
00331 PaDeviceIndex Pa_HostApiDeviceIndexToDeviceIndex( PaHostApiIndex hostApi,
00332 int hostApiDeviceIndex );
00333
00334
00335
00338 typedef struct PaHostErrorInfo{
00339 PaHostApiTypeId hostApiType;
00340 long errorCode;
00341 const char *errorText;
00342 }PaHostErrorInfo;
00343
00344
00358 const PaHostErrorInfo* Pa_GetLastHostErrorInfo( void );
00359
00360
00361
00362
00363
00371 PaDeviceIndex Pa_GetDeviceCount( void );
00372
00373
00380 PaDeviceIndex Pa_GetDefaultInputDevice( void );
00381
00382
00398 PaDeviceIndex Pa_GetDefaultOutputDevice( void );
00399
00400
00409 typedef double PaTime;
00410
00411
00433 typedef unsigned long PaSampleFormat;
00434
00435
00436 #define paFloat32 ((PaSampleFormat) 0x00000001)
00437 #define paInt32 ((PaSampleFormat) 0x00000002)
00438 #define paInt24 ((PaSampleFormat) 0x00000004)
00439 #define paInt16 ((PaSampleFormat) 0x00000008)
00440 #define paInt8 ((PaSampleFormat) 0x00000010)
00441 #define paUInt8 ((PaSampleFormat) 0x00000020)
00442 #define paCustomFormat ((PaSampleFormat) 0x00010000)
00444 #define paNonInterleaved ((PaSampleFormat) 0x80000000)
00449 typedef struct PaDeviceInfo
00450 {
00451 int structVersion;
00452 const char *name;
00453 PaHostApiIndex hostApi;
00455 int maxInputChannels;
00456 int maxOutputChannels;
00457
00459 PaTime defaultLowInputLatency;
00460 PaTime defaultLowOutputLatency;
00462 PaTime defaultHighInputLatency;
00463 PaTime defaultHighOutputLatency;
00464
00465 double defaultSampleRate;
00466 } PaDeviceInfo;
00467
00468
00482 const PaDeviceInfo* Pa_GetDeviceInfo( PaDeviceIndex device );
00483
00484
00487 typedef struct PaStreamParameters
00488 {
00495 PaDeviceIndex device;
00496
00502 int channelCount;
00503
00508 PaSampleFormat sampleFormat;
00509
00521 PaTime suggestedLatency;
00522
00528 void *hostApiSpecificStreamInfo;
00529
00530 } PaStreamParameters;
00531
00532
00534 #define paFormatIsSupported (0)
00535
00558 PaError Pa_IsFormatSupported( const PaStreamParameters *inputParameters,
00559 const PaStreamParameters *outputParameters,
00560 double sampleRate );
00561
00562
00563
00564
00565
00566
00584 typedef void PaStream;
00585
00586
00591 #define paFramesPerBufferUnspecified (0)
00592
00593
00602 typedef unsigned long PaStreamFlags;
00603
00605 #define paNoFlag ((PaStreamFlags) 0)
00606
00610 #define paClipOff ((PaStreamFlags) 0x00000001)
00611
00615 #define paDitherOff ((PaStreamFlags) 0x00000002)
00616
00626 #define paNeverDropInput ((PaStreamFlags) 0x00000004)
00627
00634 #define paPrimeOutputBuffersUsingStreamCallback ((PaStreamFlags) 0x00000008)
00635
00639 #define paPlatformSpecificFlags ((PaStreamFlags)0xFFFF0000)
00640
00648 typedef struct PaStreamCallbackTimeInfo{
00649 PaTime inputBufferAdcTime;
00650 PaTime currentTime;
00651 PaTime outputBufferDacTime;
00652 } PaStreamCallbackTimeInfo;
00653
00654
00661 typedef unsigned long PaStreamCallbackFlags;
00662
00670 #define paInputUnderflow ((PaStreamCallbackFlags) 0x00000001)
00671
00679 #define paInputOverflow ((PaStreamCallbackFlags) 0x00000002)
00680
00685 #define paOutputUnderflow ((PaStreamCallbackFlags) 0x00000004)
00686
00690 #define paOutputOverflow ((PaStreamCallbackFlags) 0x00000008)
00691
00696 #define paPrimingOutput ((PaStreamCallbackFlags) 0x00000010)
00697
00702 typedef enum PaStreamCallbackResult
00703 {
00704 paContinue=0,
00705 paComplete=1,
00706 paAbort=2
00707 } PaStreamCallbackResult;
00708
00709
00779 typedef int PaStreamCallback(
00780 const void *input, void *output,
00781 unsigned long frameCount,
00782 const PaStreamCallbackTimeInfo* timeInfo,
00783 PaStreamCallbackFlags statusFlags,
00784 void *userData );
00785
00786
00841 PaError Pa_OpenStream( PaStream** stream,
00842 const PaStreamParameters *inputParameters,
00843 const PaStreamParameters *outputParameters,
00844 double sampleRate,
00845 unsigned long framesPerBuffer,
00846 PaStreamFlags streamFlags,
00847 PaStreamCallback *streamCallback,
00848 void *userData );
00849
00850
00881 PaError Pa_OpenDefaultStream( PaStream** stream,
00882 int numInputChannels,
00883 int numOutputChannels,
00884 PaSampleFormat sampleFormat,
00885 double sampleRate,
00886 unsigned long framesPerBuffer,
00887 PaStreamCallback *streamCallback,
00888 void *userData );
00889
00890
00894 PaError Pa_CloseStream( PaStream *stream );
00895
00896
00911 typedef void PaStreamFinishedCallback( void *userData );
00912
00913
00932 PaError Pa_SetStreamFinishedCallback( PaStream *stream, PaStreamFinishedCallback* streamFinishedCallback );
00933
00934
00937 PaError Pa_StartStream( PaStream *stream );
00938
00939
00943 PaError Pa_StopStream( PaStream *stream );
00944
00945
00949 PaError Pa_AbortStream( PaStream *stream );
00950
00951
00964 PaError Pa_IsStreamStopped( PaStream *stream );
00965
00966
00980 PaError Pa_IsStreamActive( PaStream *stream );
00981
00982
00983
00988 typedef struct PaStreamInfo
00989 {
00991 int structVersion;
00992
00999 PaTime inputLatency;
01000
01007 PaTime outputLatency;
01008
01016 double sampleRate;
01017
01018 } PaStreamInfo;
01019
01020
01034 const PaStreamInfo* Pa_GetStreamInfo( PaStream *stream );
01035
01036
01052 PaTime Pa_GetStreamTime( PaStream *stream );
01053
01054
01071 double Pa_GetStreamCpuLoad( PaStream* stream );
01072
01073
01095 PaError Pa_ReadStream( PaStream* stream,
01096 void *buffer,
01097 unsigned long frames );
01098
01099
01122 PaError Pa_WriteStream( PaStream* stream,
01123 const void *buffer,
01124 unsigned long frames );
01125
01126
01135 signed long Pa_GetStreamReadAvailable( PaStream* stream );
01136
01137
01146 signed long Pa_GetStreamWriteAvailable( PaStream* stream );
01147
01148
01149
01150
01151
01157 PaError Pa_GetSampleSize( PaSampleFormat format );
01158
01159
01167 void Pa_Sleep( long msec );
01168
01169
01170
01171 #ifdef __cplusplus
01172 }
01173 #endif
01174 #endif