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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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|
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static struct sio_hdl *hdl; |
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static struct sio_par par; |
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|
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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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|
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void |
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audioDestruct() |
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{ |
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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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|
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return true; |
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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void |
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mixerClose() |
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{ |
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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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} |