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/*
* Copyright (c) 2010 Jacob Meuser <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <unistd.h>
#include <stdio.h>
#include <sndio.h>
#include "audioIO.h"
static struct sio_hdl *hdl;
static struct sio_par par;
int
audioConstruct()
{
hdl = NULL;
return true;
}
void
audioDestruct()
{
}
int
audioOpen()
{
hdl = sio_open(NULL, SIO_PLAY, 0);
if (hdl == NULL) {
fprintf(stderr, "unable to open audio device\n");
return 0;
}
return true;
}
inline void
audioFlush()
{
}
void
audioClose()
{
if (hdl != NULL)
sio_close(hdl);
}
void
audioInit(int sampleSize, int frequency, int stereo, int sign, int big)
{
sio_initpar(&par);
par.bits = sampleSize;
par.sig = sign ? 1 : 0;
par.le = big ? 0 : 1;
par.rate = frequency;
par.pchan = stereo ? 2 : 1;
if (!sio_setpar(hdl, &par) || !sio_getpar(hdl, &par))
fprintf(stderr, "error setting sndio parameters\n");
if (par.bits != sampleSize ||
par.sig != sign ? 1 : 0 ||
par.le != big ? 0 : 1 ||
par.rate != frequency ||
par.pchan != stereo ? 2 : 1)
fprintf(stderr, "could not set requested audio parameters");
if (!sio_start(hdl))
fprintf(stderr, "could not start audio");
}
int
getAudioBufferSize()
{
return (par.appbufsz * par.bps * par.pchan);
}
void
mixerSetVolume(int leftVolume, int rightVolume)
{
/* values from 0..100 */
}
int
mixerOpen()
{
return false;
}
void
mixerClose()
{
}
int
audioWrite(char *buffer, int count)
{
return(sio_write(hdl, buffer, count));
}
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