diff options
Diffstat (limited to 'pd/src/s_portaudio.c')
| -rw-r--r-- | pd/src/s_portaudio.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/pd/src/s_portaudio.c b/pd/src/s_portaudio.c new file mode 100644 index 00000000..73dd55ab --- /dev/null +++ b/pd/src/s_portaudio.c @@ -0,0 +1,197 @@ +/* Copyright (c) 2001 Miller Puckette and others. +* For information on usage and redistribution, and for a DISCLAIMER OF ALL +* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */ + +/* this file calls Ross Bencina's and Phil Burk's Portaudio package. It's + the main way in for Mac OS and, with Michael Casey's help, also into + ASIO in Windows. */ + +/* dolist. + write a version of OpenAudioStream to take nchannels param + how do we specify latency? + listing devices? + choosing devices? +*/ + +#include "m_imp.h" +#include <stdio.h> +#include <stdlib.h> +#include "pablio_pd.h" +#include "portaudio.h" +#ifndef NT +#include "portmidi.h" +#include "porttime.h" +#include "pminternal.h" +#endif + + /* public interface declared in m_imp.h */ + + /* implementation */ +static PABLIO_Stream *pa_stream; +static int pa_inchans, pa_outchans; +static float *pa_soundin, *pa_soundout; + +#define MAX_PA_CHANS 32 +#define MAX_SAMPLES_PER_FRAME MAX_PA_CHANS * DACBLKSIZE + +int pa_open_audio(int inchans, int outchans, int rate, t_sample *soundin, + t_sample *soundout, int framesperbuf, int nbuffers, + int indeviceno, int outdeviceno) +{ + PaError err; + /* post("in %d out %d rate %d device %d", inchans, outchans, rate, deviceno); */ + if (inchans != 0 && outchans != 0 && inchans != outchans) + error("portaudio: number of input and output channels must match"); + if (sys_verbose) + post("portaudio: opening for %d channels in, %d out", + inchans, outchans); + if (inchans > MAX_PA_CHANS) + { + post("input channels reduced to maximum %d", MAX_PA_CHANS); + inchans = MAX_PA_CHANS; + } + if (outchans > MAX_PA_CHANS) + { + post("output channels reduced to maximum %d", MAX_PA_CHANS); + outchans = MAX_PA_CHANS; + } + + if (inchans && outchans) + err = OpenAudioStream( &pa_stream, rate, paFloat32, + PABLIO_READ_WRITE, inchans, framesperbuf, nbuffers, indeviceno, outdeviceno); + else if (inchans) + err = OpenAudioStream( &pa_stream, rate, paFloat32, + PABLIO_READ, inchans, framesperbuf, nbuffers, indeviceno, outdeviceno); + else if (outchans) + err = OpenAudioStream( &pa_stream, rate, paFloat32, + PABLIO_WRITE, outchans, framesperbuf, nbuffers, indeviceno, outdeviceno); + else err = 0; + if ( err != paNoError ) + { + fprintf( stderr, "Error number %d occured opening portaudio stream\n", + err); + fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) ); + Pa_Terminate(); + return (1); + } + else if (sys_verbose) + post("... opened OK."); + pa_inchans = inchans; + pa_outchans = outchans; + pa_soundin = soundin; + pa_soundout = soundout; + return (0); +} + +void pa_close_audio( void) +{ + if (pa_inchans || pa_outchans) + CloseAudioStream( pa_stream ); + pa_inchans = pa_outchans = 0; +} + +int pa_send_dacs(void) +{ + float samples[MAX_SAMPLES_PER_FRAME], *fp1, *fp2; + int i, j; + double timebefore; + + timebefore = sys_getrealtime(); + if (pa_inchans) + { + ReadAudioStream(pa_stream, samples, DACBLKSIZE); + for (j = 0, fp1 = pa_soundin; j < pa_inchans; j++, fp1 += DACBLKSIZE) + for (i = 0, fp2 = samples + j; i < DACBLKSIZE; i++, + fp2 += pa_inchans) + { + fp1[i] = *fp2; + } + } + if (pa_outchans) + { + for (j = 0, fp1 = pa_soundout; j < pa_outchans; j++, fp1 += DACBLKSIZE) + for (i = 0, fp2 = samples + j; i < DACBLKSIZE; i++, + fp2 += pa_outchans) + { + *fp2 = fp1[i]; + fp1[i] = 0; + } + WriteAudioStream(pa_stream, samples, DACBLKSIZE); + } + + if (sys_getrealtime() > timebefore + 0.002) + return (SENDDACS_SLEPT); + else return (SENDDACS_YES); +} + + +void pa_listdevs(void) /* lifted from pa_devs.c in portaudio */ +{ + int i,j; + int numDevices; + const PaDeviceInfo *pdi; + PaError err; + Pa_Initialize(); + numDevices = Pa_CountDevices(); + if( numDevices < 0 ) + { + fprintf(stderr, "ERROR: Pa_CountDevices returned 0x%x\n", numDevices ); + err = numDevices; + goto error; + } + fprintf(stderr, "Number of devices = %d\n", numDevices ); + for( i=0; i<numDevices; i++ ) + { + pdi = Pa_GetDeviceInfo( i ); + fprintf(stderr, "---------------------------------------------- #%d", + i+1 ); + if( i == Pa_GetDefaultInputDeviceID() ) fprintf(stderr, " DefaultInput"); + if( i == Pa_GetDefaultOutputDeviceID() ) fprintf(stderr, " DefaultOutput"); + fprintf(stderr, "\nName = %s\n", pdi->name ); + fprintf(stderr, "Max Inputs = %d", pdi->maxInputChannels ); + fprintf(stderr, ", Max Outputs = %d\n", pdi->maxOutputChannels ); + if( pdi->numSampleRates == -1 ) + { + fprintf(stderr, "Sample Rate Range = %f to %f\n", pdi->sampleRates[0], pdi->sampleRates[1] ); + } + else + { + fprintf(stderr, "Sample Rates ="); + for( j=0; j<pdi->numSampleRates; j++ ) + { + fprintf(stderr, " %8.2f,", pdi->sampleRates[j] ); + } + fprintf(stderr, "\n"); + } + fprintf(stderr, "Native Sample Formats = "); + if( pdi->nativeSampleFormats & paInt8 ) fprintf(stderr, "paInt8, "); + if( pdi->nativeSampleFormats & paUInt8 ) fprintf(stderr, "paUInt8, "); + if( pdi->nativeSampleFormats & paInt16 ) fprintf(stderr, "paInt16, "); + if( pdi->nativeSampleFormats & paInt32 ) fprintf(stderr, "paInt32, "); + if( pdi->nativeSampleFormats & paFloat32 ) fprintf(stderr, "paFloat32, "); + if( pdi->nativeSampleFormats & paInt24 ) fprintf(stderr, "paInt24, "); + if( pdi->nativeSampleFormats & paPackedInt24 ) fprintf(stderr, "paPackedInt24, "); + fprintf(stderr, "\n"); + } + + fprintf(stderr, "----------------------------------------------\n"); + goto midi; + +error: + fprintf( stderr, "An error occured while using the portaudio stream\n" ); + fprintf( stderr, "Error number: %d\n", err ); + fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) ); + + /* and MIDI */ +midi: ; +#ifndef NT + for (i = 0; i < Pm_CountDevices(); i++) + { + const PmDeviceInfo *info = Pm_GetDeviceInfo(i); + printf("%d: %s, %s", i, info->interf, info->name); + if (info->input) printf(" (input)"); + if (info->output) printf(" (output)"); + printf("\n"); + } +#endif +} |