mirror of https://git.code.sf.net/p/quake/newtree
309 lines
6.5 KiB
C
309 lines
6.5 KiB
C
/*
|
|
snd_oss.c
|
|
|
|
(description)
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/shm.h>
|
|
#include <sys/wait.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
|
|
#ifdef HAVE_SYS_IOCTL_H
|
|
# include <sys/ioctl.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_MMAN_H
|
|
# include <sys/mman.h>
|
|
#endif
|
|
|
|
#if defined HAVE_SYS_SOUNDCARD_H
|
|
# include <sys/soundcard.h>
|
|
#elif defined HAVE_LINUX_SOUNDCARD_H
|
|
# include <linux/soundcard.h>
|
|
#elif HAVE_MACHINE_SOUNDCARD_H
|
|
# include <machine/soundcard.h>
|
|
#endif
|
|
|
|
#include "cmd.h"
|
|
#include "console.h"
|
|
#include "qargs.h"
|
|
#include "sound.h"
|
|
|
|
#ifndef MAP_FAILED
|
|
# define MAP_FAILED ((void *) -1)
|
|
#endif
|
|
|
|
int audio_fd;
|
|
int snd_inited;
|
|
|
|
static int tryrates[] = { 11025, 22050, 22051, 44100, 8000 };
|
|
|
|
qboolean
|
|
SNDDMA_Init (void)
|
|
{
|
|
int rc;
|
|
int fmt;
|
|
int tmp;
|
|
int i;
|
|
char *s;
|
|
struct audio_buf_info info;
|
|
int caps;
|
|
int retries = 3;
|
|
|
|
snd_inited = 0;
|
|
|
|
// open /dev/dsp, confirm capability to mmap, and get size of dma buffer
|
|
audio_fd = open ("/dev/dsp", O_RDWR);
|
|
if (audio_fd < 0) { // Failed open, retry up to 3 times
|
|
// if it's busy
|
|
while ((audio_fd < 0) && retries-- &&
|
|
((errno == EAGAIN) || (errno == EBUSY))) {
|
|
sleep (1);
|
|
audio_fd = open ("/dev/dsp", O_RDWR);
|
|
}
|
|
if (audio_fd < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not open /dev/dsp\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if ((rc = ioctl (audio_fd, SNDCTL_DSP_RESET, 0)) < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not reset /dev/dsp\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
if (ioctl (audio_fd, SNDCTL_DSP_GETCAPS, &caps) == -1) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Sound driver too old\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP)) {
|
|
Con_Printf ("Sound device can't do memory-mapped I/O.\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
if (ioctl (audio_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) {
|
|
perror ("GETOSPACE");
|
|
Con_Printf ("Um, can't do GETOSPACE?\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
shm = &sn;
|
|
shm->splitbuffer = 0;
|
|
|
|
// set sample bits & speed
|
|
if ((i = COM_CheckParm ("-sndbits"))) {
|
|
shm->samplebits = atoi (com_argv[i + 1]);
|
|
} else {
|
|
if ((s = getenv ("QF_SND_BITS"))) {
|
|
shm->samplebits = atoi (s);
|
|
}
|
|
}
|
|
|
|
if (shm->samplebits != 16 && shm->samplebits != 8) {
|
|
ioctl (audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
|
|
|
|
if (fmt & AFMT_S16_LE) { // little-endian 16-bit signed
|
|
shm->samplebits = 16;
|
|
} else {
|
|
if (fmt & AFMT_U8) { // unsigned 8-bit ulaw
|
|
shm->samplebits = 8;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((i = COM_CheckParm ("-sndspeed"))) {
|
|
shm->speed = atoi (com_argv[i + 1]);
|
|
} else if ((s = getenv ("QF_SND_SPEED"))) {
|
|
shm->speed = atoi (s);
|
|
} else {
|
|
for (i = 0; i < (sizeof (tryrates) / 4); i++)
|
|
if (!ioctl (audio_fd, SNDCTL_DSP_SPEED, &tryrates[i]))
|
|
break;
|
|
shm->speed = tryrates[i];
|
|
}
|
|
|
|
if ((i = COM_CheckParm ("-sndmono"))) {
|
|
shm->channels = 1;
|
|
} else if ((i = COM_CheckParm ("-sndstereo"))) {
|
|
shm->channels = 2;
|
|
} else if ((s = getenv ("QF_SND_CHANNELS"))) {
|
|
shm->channels = atoi (s);
|
|
} else {
|
|
shm->channels = 2;
|
|
}
|
|
|
|
shm->samples = info.fragstotal * info.fragsize / (shm->samplebits / 8);
|
|
shm->submission_chunk = 1;
|
|
|
|
// memory map the dma buffer
|
|
shm->buffer = (unsigned char *) mmap (NULL, info.fragstotal
|
|
* info.fragsize,
|
|
PROT_READ | PROT_WRITE,
|
|
MAP_FILE | MAP_SHARED, audio_fd, 0);
|
|
|
|
if (shm->buffer == MAP_FAILED) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not mmap /dev/dsp\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
tmp = 0;
|
|
if (shm->channels == 2)
|
|
tmp = 1;
|
|
rc = ioctl (audio_fd, SNDCTL_DSP_STEREO, &tmp);
|
|
if (rc < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not set /dev/dsp to stereo=%d", shm->channels);
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
if (tmp)
|
|
shm->channels = 2;
|
|
else
|
|
shm->channels = 1;
|
|
|
|
rc = ioctl (audio_fd, SNDCTL_DSP_SPEED, &shm->speed);
|
|
if (rc < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not set /dev/dsp speed to %d", shm->speed);
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
if (shm->samplebits == 16) {
|
|
rc = AFMT_S16_LE;
|
|
rc = ioctl (audio_fd, SNDCTL_DSP_SETFMT, &rc);
|
|
if (rc < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not support 16-bit data. Try 8-bit.\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
} else if (shm->samplebits == 8) {
|
|
rc = AFMT_U8;
|
|
rc = ioctl (audio_fd, SNDCTL_DSP_SETFMT, &rc);
|
|
if (rc < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not support 8-bit data.\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
} else {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("%d-bit sound not supported.", shm->samplebits);
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
// toggle the trigger & start her up
|
|
|
|
tmp = 0;
|
|
rc = ioctl (audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
|
|
if (rc < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not toggle.\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
tmp = PCM_ENABLE_OUTPUT;
|
|
rc = ioctl (audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
|
|
if (rc < 0) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Could not toggle.\n");
|
|
close (audio_fd);
|
|
return 0;
|
|
}
|
|
|
|
shm->samplepos = 0;
|
|
|
|
snd_inited = 1;
|
|
return 1;
|
|
|
|
}
|
|
|
|
int
|
|
SNDDMA_GetDMAPos (void)
|
|
{
|
|
|
|
struct count_info count;
|
|
|
|
if (!snd_inited)
|
|
return 0;
|
|
|
|
if (ioctl (audio_fd, SNDCTL_DSP_GETOPTR, &count) == -1) {
|
|
perror ("/dev/dsp");
|
|
Con_Printf ("Uh, sound dead.\n");
|
|
close (audio_fd);
|
|
snd_inited = 0;
|
|
return 0;
|
|
}
|
|
// shm->samplepos = (count.bytes / (shm->samplebits / 8)) & (shm->samples-1);
|
|
// fprintf(stderr, "%d \r", count.ptr);
|
|
shm->samplepos = count.ptr / (shm->samplebits / 8);
|
|
|
|
return shm->samplepos;
|
|
|
|
}
|
|
|
|
void
|
|
SNDDMA_Shutdown (void)
|
|
{
|
|
if (snd_inited) {
|
|
close (audio_fd);
|
|
snd_inited = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
==============
|
|
SNDDMA_Submit
|
|
|
|
Send sound to device if buffer isn't really the dma buffer
|
|
===============
|
|
*/
|
|
void
|
|
SNDDMA_Submit (void)
|
|
{
|
|
}
|