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/*
TiMidity++ -- MIDI to WAVE converter and player
Copyright (C) 1999-2002 Masanao Izumo <mo@goice.co.jp>
Copyright (C) 1995 Tuukka Toivonen <tt@cgs.fi>
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
bsd20_a.c
Written by Yamate Keiichiro <keiich-y@is.aist-nara.ac.jp>
*/
/*
* BSD/OS 2.0 audio
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <i386/isa/sblast.h>
#include "timidity.h"
#include "output.h"
#include "controls.h"
#include "timer.h"
#include "instrum.h"
#include "playmidi.h"
#include "miditrace.h"
static int open_output(void); /* 0=success, 1=warning, -1=fatal error */
static void close_output(void);
static int output_data(char *buf, int32 nbytes);
static int acntl(int request, void *arg);
/* export the playback mode */
#define dpm bsdi_play_mode
PlayMode dpm = {
DEFAULT_RATE, PE_SIGNED|PE_MONO, PF_PCM_STREAM|PF_CAN_TRACE,
-1,
{0}, /* default: get all the buffer fragments you can */
"BSD/OS sblast dsp", 'd',
"/dev/sb_dsp",
open_output,
close_output,
output_data,
acntl
};
static int open_output(void)
{
int fd, tmp, warnings=0;
if ((fd=open(dpm.name, O_RDWR | O_NDELAY, 0)) < 0)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: %s",
dpm.name, strerror(errno));
return -1;
}
/* They can't mean these */
dpm.encoding &= ~(PE_ULAW|PE_ALAW|PE_BYTESWAP);
/* Set sample width to whichever the user wants. If it fails, try
the other one. */
if (dpm.encoding & PE_16BIT)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: sblast only 8bit",
dpm.name);
close(fd);
return -1;
}
tmp = ((~dpm.encoding) & PE_16BIT) ? PCM_8 : 0;
ioctl(fd, DSP_IOCTL_COMPRESS, &tmp);
dpm.encoding &= ~PE_SIGNED;
/* Try stereo or mono, whichever the user wants. If it fails, try
the other. */
tmp=(dpm.encoding & PE_MONO) ? 0 : 1;
ioctl(fd, DSP_IOCTL_STEREO, &tmp);
/* Set the sample rate */
tmp=dpm.rate * ((dpm.encoding & PE_MONO) ? 1 : 2);
ioctl(fd, DSP_IOCTL_SPEED, &tmp);
if (tmp != dpm.rate)
{
dpm.rate=tmp / ((dpm.encoding & PE_MONO) ? 1 : 2);;
ctl->cmsg(CMSG_WARNING, VERB_VERBOSE,
"Output rate adjusted to %d Hz", dpm.rate);
warnings=1;
}
/* Older VoxWare drivers don't have buffer fragment capabilities */
if (dpm.extra_param[0])
{
ctl->cmsg(CMSG_WARNING, VERB_NORMAL,
"%s doesn't support buffer fragments", dpm.name);
warnings=1;
}
tmp = 16384;
ioctl(fd, DSP_IOCTL_BUFSIZE, &tmp);
dpm.fd = fd;
return warnings;
}
static int output_data(char *buf, int32 nbytes)
{
while ((-1==write(dpm.fd, buf, nbytes)) && errno==EINTR)
;
}
static void close_output(void)
{
if(dpm.fd != -1)
{
close(dpm.fd);
dpm.fd = -1;
}
}
static int acntl(int request, void *arg)
{
switch(request)
{
case PM_REQ_DISCARD:
return ioctl(dpm.fd, DSP_IOCTL_RESET);
}
return -1;
}
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