mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-11-24 12:51:25 +00:00
319 lines
7.9 KiB
C
319 lines
7.9 KiB
C
/*
|
|
snd_alsa.c
|
|
|
|
(description)
|
|
|
|
Copyright (C) 1999,2000 contributors of the QuakeForge project
|
|
Please see the file "AUTHORS" for a list of contributors
|
|
|
|
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
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <qtypes.h>
|
|
#include <sound.h>
|
|
#include <qargs.h>
|
|
#include <console.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <fcntl.h>
|
|
#include <sys/types.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 <sys/asoundlib.h>
|
|
|
|
#ifndef MAP_FAILED
|
|
# define MAP_FAILED ((void*)-1)
|
|
#endif
|
|
|
|
static int snd_inited;
|
|
|
|
static snd_pcm_t *pcm_handle;
|
|
static struct snd_pcm_channel_info cinfo;
|
|
static struct snd_pcm_channel_params params;
|
|
static struct snd_pcm_channel_setup setup;
|
|
static snd_pcm_mmap_control_t *mmap_control = NULL;
|
|
static char *mmap_data = NULL;
|
|
static int card=-1,dev=-1;
|
|
|
|
int check_card(int card)
|
|
{
|
|
snd_ctl_t *handle;
|
|
snd_ctl_hw_info_t info;
|
|
int rc;
|
|
|
|
if ((rc = snd_ctl_open(&handle, card)) < 0) {
|
|
Con_Printf("Error: control open (%i): %s\n", card, snd_strerror(rc));
|
|
return rc;
|
|
}
|
|
if ((rc = snd_ctl_hw_info(handle, &info)) < 0) {
|
|
Con_Printf("Error: control hardware info (%i): %s\n", card,
|
|
snd_strerror(rc));
|
|
snd_ctl_close(handle);
|
|
return rc;
|
|
}
|
|
snd_ctl_close(handle);
|
|
if (dev==-1) {
|
|
for (dev = 0; dev < info.pcmdevs; dev++) {
|
|
if ((rc=snd_pcm_open(&pcm_handle,card,dev,
|
|
SND_PCM_OPEN_PLAYBACK
|
|
| SND_PCM_OPEN_NONBLOCK))==0) {
|
|
return 0;
|
|
}
|
|
}
|
|
} else {
|
|
if (dev>=0 && dev <info.pcmdevs) {
|
|
if ((rc=snd_pcm_open(&pcm_handle,card,dev,
|
|
SND_PCM_OPEN_PLAYBACK
|
|
| SND_PCM_OPEN_NONBLOCK))==0) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
qboolean SNDDMA_Init(void)
|
|
{
|
|
int rc=0,i;
|
|
char *err_msg="";
|
|
int rate,format,bps,stereo,frag_size;
|
|
unsigned int mask;
|
|
|
|
mask = snd_cards_mask();
|
|
if (!mask) {
|
|
Con_Printf("No sound cards detected\n");
|
|
return 0;
|
|
}
|
|
if ((i=COM_CheckParm("-sndcard"))!=0) {
|
|
card=atoi(com_argv[i+1]);
|
|
}
|
|
if ((i=COM_CheckParm("-snddev"))!=0) {
|
|
dev=atoi(com_argv[i+1]);
|
|
}
|
|
if (card==-1) {
|
|
for (card=0; card<SND_CARDS; card++) {
|
|
if (!(mask & (1<<card)))
|
|
continue;
|
|
rc=check_card(card);
|
|
if (rc<0)
|
|
return 0;
|
|
if (!rc)
|
|
goto dev_openned;
|
|
}
|
|
} else {
|
|
if (dev==-1) {
|
|
rc=check_card(card);
|
|
if (rc<0)
|
|
return 0;
|
|
if (!rc)
|
|
goto dev_openned;
|
|
} else {
|
|
if ((rc=snd_pcm_open(&pcm_handle,card,dev,
|
|
SND_PCM_OPEN_PLAYBACK
|
|
| SND_PCM_OPEN_NONBLOCK))<0) {
|
|
Con_Printf("Error: audio open error: %s\n", snd_strerror(rc));
|
|
return 0;
|
|
}
|
|
goto dev_openned;
|
|
}
|
|
}
|
|
Con_Printf("Error: audio open error: %s\n", snd_strerror(rc));
|
|
return 0;
|
|
|
|
dev_openned:
|
|
Con_Printf("Using card %d, device %d.\n", card, dev);
|
|
memset(&cinfo, 0, sizeof(cinfo));
|
|
cinfo.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
snd_pcm_channel_info(pcm_handle, &cinfo);
|
|
Con_Printf("%08x %08x %08x\n",cinfo.flags,cinfo.formats,cinfo.rates);
|
|
if (cinfo.rates & SND_PCM_RATE_44100) {
|
|
rate=44100;
|
|
frag_size=512; /* assuming stereo 8 bit */
|
|
} else if (cinfo.rates & SND_PCM_RATE_22050) {
|
|
rate=22050;
|
|
frag_size=256; /* assuming stereo 8 bit */
|
|
} else if (cinfo.rates & SND_PCM_RATE_11025) {
|
|
rate=11025;
|
|
frag_size=128; /* assuming stereo 8 bit */
|
|
} else {
|
|
Con_Printf("ALSA: desired rates not supported\n");
|
|
goto error_2;
|
|
}
|
|
if (cinfo.formats & SND_PCM_FMT_S16_LE) {
|
|
format=SND_PCM_SFMT_S16_LE;
|
|
bps=16;
|
|
frag_size*=2;
|
|
} else if (cinfo.formats & SND_PCM_FMT_U8) {
|
|
format=SND_PCM_SFMT_U8;
|
|
bps=8;
|
|
} else {
|
|
Con_Printf("ALSA: desired formats not supported\n");
|
|
goto error_2;
|
|
}
|
|
if (cinfo.max_voices>=2) {
|
|
stereo=1;
|
|
} else {
|
|
stereo=0;
|
|
frag_size/=2;
|
|
}
|
|
|
|
// err_msg="audio flush";
|
|
// if ((rc=snd_pcm_channel_flush(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
|
|
// goto error;
|
|
err_msg="audio munmap";
|
|
if ((rc=snd_pcm_munmap(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
|
|
goto error;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
params.mode = SND_PCM_MODE_BLOCK;
|
|
params.format.interleave=1;
|
|
params.format.format=format;
|
|
params.format.rate=rate;
|
|
params.format.voices=stereo+1;
|
|
params.start_mode = SND_PCM_START_GO;
|
|
params.stop_mode = SND_PCM_STOP_ROLLOVER;
|
|
params.buf.block.frag_size=frag_size;
|
|
params.buf.block.frags_min=1;
|
|
params.buf.block.frags_max=-1;
|
|
// err_msg="audio flush";
|
|
// if ((rc=snd_pcm_channel_flush(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
|
|
// goto error;
|
|
err_msg="audio params";
|
|
if ((rc=snd_pcm_channel_params(pcm_handle, ¶ms))<0)
|
|
goto error;
|
|
|
|
err_msg="audio mmap";
|
|
if ((rc=snd_pcm_mmap(pcm_handle, SND_PCM_CHANNEL_PLAYBACK, &mmap_control, (void **)&mmap_data))<0)
|
|
goto error;
|
|
err_msg="audio prepare";
|
|
if ((rc=snd_pcm_plugin_prepare(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
|
|
goto error;
|
|
|
|
memset(&setup, 0, sizeof(setup));
|
|
setup.mode = SND_PCM_MODE_BLOCK;
|
|
setup.channel = SND_PCM_CHANNEL_PLAYBACK;
|
|
err_msg="audio setup";
|
|
if ((rc=snd_pcm_channel_setup(pcm_handle, &setup))<0)
|
|
goto error;
|
|
|
|
shm=&sn;
|
|
memset((dma_t*)shm,0,sizeof(*shm));
|
|
shm->splitbuffer = 0;
|
|
shm->channels=setup.format.voices;
|
|
shm->submission_chunk=128; // don't mix less than this #
|
|
shm->samplepos=0; // in mono samples
|
|
shm->samplebits=setup.format.format==SND_PCM_SFMT_S16_LE?16:8;
|
|
shm->samples=setup.buf.block.frags*setup.buf.block.frag_size/(shm->samplebits/8); // mono samples in buffer
|
|
shm->speed=setup.format.rate;
|
|
shm->buffer=(unsigned char*)mmap_data;
|
|
Con_Printf("%5d stereo\n", shm->channels - 1);
|
|
Con_Printf("%5d samples\n", shm->samples);
|
|
Con_Printf("%5d samplepos\n", shm->samplepos);
|
|
Con_Printf("%5d samplebits\n", shm->samplebits);
|
|
Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
|
|
Con_Printf("%5d speed\n", shm->speed);
|
|
Con_Printf("0x%x dma buffer\n", shm->buffer);
|
|
Con_Printf("%5d total_channels\n", total_channels);
|
|
|
|
snd_inited=1;
|
|
return 1;
|
|
error:
|
|
Con_Printf("Error: %s: %s\n", err_msg, snd_strerror(rc));
|
|
error_2:
|
|
snd_pcm_close(pcm_handle);
|
|
return 0;
|
|
}
|
|
|
|
int SNDDMA_GetDMAPos(void)
|
|
{
|
|
if (!snd_inited) return 0;
|
|
shm->samplepos=(mmap_control->status.frag_io+1)*setup.buf.block.frag_size/(shm->samplebits/8);
|
|
return shm->samplepos;
|
|
}
|
|
|
|
void SNDDMA_Shutdown(void)
|
|
{
|
|
if (snd_inited)
|
|
{
|
|
snd_pcm_close(pcm_handle);
|
|
snd_inited = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
==============
|
|
SNDDMA_Submit
|
|
|
|
Send sound to device if buffer isn't really the dma buffer
|
|
===============
|
|
*/
|
|
void SNDDMA_Submit(void)
|
|
{
|
|
int count=paintedtime-soundtime;
|
|
int i,s,e;
|
|
int rc;
|
|
|
|
count+=setup.buf.block.frag_size-1;
|
|
count/=setup.buf.block.frag_size;
|
|
s=soundtime/setup.buf.block.frag_size;
|
|
e=s+count;
|
|
for (i=s; i<e; i++)
|
|
mmap_control->fragments[i % setup.buf.block.frags].data=1;
|
|
switch (mmap_control->status.status) {
|
|
case SND_PCM_STATUS_PREPARED:
|
|
if ((rc=snd_pcm_channel_go(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0) {
|
|
fprintf(stderr, "unable to start playback. %s\n",
|
|
snd_strerror(rc));
|
|
exit(1);
|
|
}
|
|
break;
|
|
case SND_PCM_STATUS_RUNNING:
|
|
break;
|
|
case SND_PCM_STATUS_UNDERRUN:
|
|
if ((rc=snd_pcm_plugin_prepare(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0) {
|
|
fprintf(stderr, "underrun: playback channel prepare error. %s\n",
|
|
snd_strerror(rc));
|
|
exit(1);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|