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