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/* 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
}
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