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/*
* soundmidas.c - Implementation of the MIDAS sound device
*
* Written by
* Teemu Rantanen (tvr@cs.hut.fi)
*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA.
*
*/
/* XXX: includes */
#include "vice.h"
#include "sound.h"
#include <stdio.h>
#include "vmidas.h"
static int midas_bufferstatus(warn_t *w, int first);
static MIDASstreamHandle midas_stream = NULL;
static int midas_bufsize = -1;
static int midas_maxsize = -1;
static int midas_init(warn_t *w, char *param, int *speed,
int *fragsize, int *fragnr, double bufsize)
{
BOOL st;
st = vmidas_startup();
if (st != TRUE)
return 1;
st = MIDASsetOption(MIDAS_OPTION_MIXRATE, *speed);
if (st != TRUE)
return 1;
st = MIDASsetOption(MIDAS_OPTION_MIXING_MODE, MIDAS_MIX_NORMAL_QUALITY);
if (st != TRUE)
return 1;
st = MIDASsetOption(MIDAS_OPTION_OUTPUTMODE, MIDAS_MODE_16BIT_MONO);
if (st != TRUE)
return 1;
st = MIDASsetOption(MIDAS_OPTION_MIXBUFLEN,
(*fragsize)*(*fragnr)*sizeof(SWORD));
if (st != TRUE)
return 1;
st = MIDASsetOption(MIDAS_OPTION_MIXBUFBLOCKS, *fragnr);
if (st != TRUE)
return 1;
#ifdef __MSDOS__
#if 0
st = MIDASconfig();
if (st != TRUE)
return 1;
#endif
#endif
st = vmidas_init();
if (st != TRUE)
return 1;
st = MIDASopenChannels(1);
if (st != TRUE)
{
/* st = MIDASclose(); */
return 1;
}
midas_stream = MIDASplayStreamPolling(MIDAS_SAMPLE_16BIT_MONO, *speed,
(int)(bufsize*1000));
if (!midas_stream)
{
st = MIDAScloseChannels();
/* st = MIDASclose(); */
return 1;
}
midas_bufsize = (*fragsize)*(*fragnr);
midas_maxsize = midas_bufsize / 2;
return 0;
}
static int midas_write(warn_t *w, SWORD *pbuf, int nr)
{
BOOL st = 1;
unsigned int ist;
ist = MIDASfeedStreamData(midas_stream, (unsigned char *)pbuf,
nr*sizeof(SWORD), TRUE);
if (ist != nr*sizeof(SWORD))
return 1;
#ifndef __MSDOS__
st = MIDASpoll();
#endif
return !st;
}
static int midas_bufferstatus(warn_t *s, int first)
{
int nr;
if (first)
return 0;
nr = MIDASgetStreamBytesBuffered(midas_stream);
if (nr < 0)
nr = 0;
nr /= sizeof(SWORD);
if (nr > midas_maxsize)
midas_maxsize = nr;
return (int)((double)nr/midas_maxsize*midas_bufsize);
}
static void midas_close(warn_t *w)
{
BOOL st;
/* XXX: we might come here from `atexit', so MIDAS might have been shut
down already. This is a dirty kludge, we should find a cleaner way to
do it. */
if (vmidas_available())
{
st = MIDASstopStream(midas_stream);
st = MIDAScloseChannels();
/* st = MIDASclose(); */
}
midas_stream = NULL;
midas_bufsize = -1;
midas_maxsize = -1;
}
static sound_device_t midas_device =
{
"midas",
midas_init,
midas_write,
NULL,
NULL,
midas_bufferstatus,
midas_close,
NULL,
NULL
};
int sound_init_midas_device(void)
{
return sound_register_device(&midas_device);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.