mirror of
https://git.code.sf.net/p/quake/quake2forge
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591 lines
14 KiB
C
591 lines
14 KiB
C
/* $Id$
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*
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* used to be snd_linux.c
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*
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* Copyright (C) 1997-2001 Id Software, Inc.
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* Copyright (c) 2002 The Quakeforge Project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* merged in from snd_irix.c -- jaq */
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#ifndef __sgi
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <pthread.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/shm.h>
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#include <sys/wait.h>
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#include <stdio.h>
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/* merged in from snd_bsd.c -- jaq */
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#ifdef __linux__
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#include <linux/soundcard.h>
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#else /* bsd */
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#include <soundcard.h> /* freebsd might be <sys/soundcard.h> */
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#endif /* __linux__ */
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#else /* __sgi */
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#include <dmedia/dmedia.h>
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#include <dmedia/audio.h>
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#endif /* __sgi */
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#include "client.h"
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#include "snd_loc.h"
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#define FRAGSIZEEXP 9
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#define FRAGSIZE (1<<FRAGSIZEEXP)
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#define AUDIOBUFFERSIZE 4096
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#define AUDIOBUFFERS 64
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#ifdef __sgi
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/* must be a power of 2! */
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#define QSND_SKID 2
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#define QSND_BUFFER_FRAMES 8192
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#define QSND_BUFFER_SIZE (QSND_BUFFER_FRAMES * 2)
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#define UST_TO_BUFFPOS(ust) ((int)((ust) & (QSND_BUFFERS_FRAMES - 1)) << 1)
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short int dma_buffer[QSND_BUFFER_SIZE];
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ALport sgisnd_aport = NULL;
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long long sgisnd_startframe;
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double sgisnd_frames_per_ns;
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long long sgisnd_lastframewritten = 0;
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#else /* !__sgi */
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static int audio_fd = -1;
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static volatile int snd_inited;
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static volatile int frags_sent;
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static int mmapped = 0;
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static int tryrates[] = { 11025, 22051, 44100, 48000, 8000 };
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#endif
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cvar_t *sndbits;
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cvar_t *sndspeed;
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cvar_t *sndchannels;
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cvar_t *snddevice;
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/* irix cvars -- jaq */
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cvar_t * s_loadas8bit;
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cvar_t * s_khz;
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static pthread_t audio;
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void * thesound(void * arg) {
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while (snd_inited) {
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write(audio_fd, dma.buffer + frags_sent * FRAGSIZE, FRAGSIZE);
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frags_sent++;
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frags_sent &= (dma.samples * (dma.samplebits/8) / FRAGSIZE) - 1;
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}
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pthread_exit(0L);
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}
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qboolean SNDDMA_Init(void) {
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/* merged in from snd_irix.c -- jaq */
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#ifdef __sgi
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ALconfig ac = NULL;
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ALpv pvbuf[2];
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s_loadas8bit = Cvar_Get("s_loadas8bit", "16", CVAR_ARCHIVE);
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if ((int) s_loadas8bit->value)
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dma.samplebits = 8;
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else
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dma.samplebits = 16;
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if (dma.samplebits != 16) {
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Com_Printf("Don't currently support %i-bit data. Forcing 16-bit\n", dma.samplebits);
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dma.samplebits = 16;
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Cvar_SetValue("s_loadas8bit", false);
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}
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s_khz = Cvar_Get("s_khz", "0", CVAR_ARCHIVE);
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switch ((int) s_khz->value) {
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case 48:
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dma.speed = AL_RATE_48000;
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break;
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case 44:
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dma.speed = AL_RATE_44100;
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break;
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case 32:
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dma.speed = AL_RATE_32000;
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break;
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case 22:
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dma.speed = AL_RATE_22050;
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break;
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case 16:
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dma.speed = AL_RATE_16000;
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break;
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case 11:
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dma.speed = AL_RATE_11025;
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break;
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case 8:
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dma.speed = AL_RATE_8000;
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break;
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default:
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dma.speed = AL_RATE_22050;
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Com_Printf("Don't currently support %ikHz sample rate, using %i.\n", (int) s_khz->value, (int) (dma.speed/1000));
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}
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sndchannels = Cvar_Get("sndchannels", "2", CVAR_ARCHIVE);
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dma.channels = (int) sndchannels->value;
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if (dma.channels != 2)
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Com_Printf("Don't currently support %i sound channels, try 2.\n", dma.channels);
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ac = alNewConfig();
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alSetChannels(ac, AL_STEREO);
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alSetStampFmt(ac, AL_SAMPFMT_TWOSCOMP);
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alSetQueueSize(ac, QSND_BUFFER_FRAMES);
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if (dma.samplebits == 8)
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alSetWidth(ac, AL_SAMPLE_8);
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else
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alSetWidth(ac, AL_SAMPLE_16);
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sgisnd_aport = alOpenPort("Quake", "w", ac);
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if (!sgisnd_aport) {
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printf("failed to open audio port!\n");
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}
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/* set desired sample rate */
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pvbuf[0].param = AL_MASTER_CLOCK;
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pvbuf[0].value.i = AL_CRYSTAL_MCLK_TYPE;
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pvbuf[1].param = AL_RATE;
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pvbuf[1].value.ll = alIntToFixed(dma.speed);
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alSetParams(alGetResource(sgisnd_aport), pvbuf, 2);
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if (pvbuf[1].sizeOut < 0)
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printf("illegal sample rate %d\n", dma.speed);
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sgisnd_frames_per_ns = dma.speed * 1.0e-9;
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dma.samples = sizeof(dma_buffer) / (dma.samplebits / 8);
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dma.submission_chunk = 1;
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dma.buffer = (unsigned char *) dma_buffer;
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dma.samplepos = 0;
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alFreeConfig(ac);
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return true;
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#else /* __sgi */
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int rc;
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int fmt;
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int tmp;
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int i;
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struct audio_buf_info info;
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int caps;
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extern uid_t saved_euid;
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if (snd_inited)
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return 1;
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snd_inited = 0;
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if (!snddevice) {
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sndbits = Cvar_Get("sndbits", "16", CVAR_ARCHIVE);
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sndspeed = Cvar_Get("sndspeed", "0", CVAR_ARCHIVE);
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sndchannels = Cvar_Get("sndchannels", "2", CVAR_ARCHIVE);
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/* merged in from snd_bsd.c -- jaq */
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#ifdef __linux__
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snddevice = Cvar_Get("snddevice", "/dev/dsp", CVAR_ARCHIVE);
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#else /* bsd */
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snddevice = Cvar_Get("snddevice", "/dev/audio", CVAR_ARCHIVE);
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#endif
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}
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// open /dev/dsp, check capability to mmap, and get size of dma buffer
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/* snd_bsd.c had "if (!audio_fd)" */
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if (audio_fd == -1)
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{
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seteuid(saved_euid);
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audio_fd = open(snddevice->string, O_RDWR);
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/* moved from below in snd_bsd.c -- jaq */
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seteuid(getuid());
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if (audio_fd == -1)
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{
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perror(snddevice->string);
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seteuid(getuid());
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Com_Printf("SNDDMA_Init: Could not open %s.\n", snddevice->string);
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return 0;
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}
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/*
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seteuid(getuid());
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*/
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}
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rc = ioctl(audio_fd, SNDCTL_DSP_RESET, 0);
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if (rc == -1) /* snd_bsd has "rc < 0" */
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not reset %s.\n", snddevice->string);
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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if (ioctl(audio_fd, SNDCTL_DSP_GETCAPS, &caps) == -1
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|| !(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP)) {
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Com_Printf("SNDDMA_Init: Sound device does not support mmap");
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} else {
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if (ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) {
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Sound driver too old.\n");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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} else
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mmapped = 1;
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}
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if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP)) {
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if (!mmapped) {
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int frags = 2 << 16 | FRAGSIZEEXP;
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if (ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &frags) == -1) {
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not set sound fragments");
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/* NOMMAP - jaq
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Com_Printf("SNDDMA_Init: Sorry, but your soundcard doesn't support trigger or mmap. (%08x)\n", caps);
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*/
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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}
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}
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/* NOMMAP - jaq
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if (ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1)
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{
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perror("GETOSPACE");
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Com_Printf("SNDDMA_Init: GETOSPACE ioctl failed.\n");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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*/
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// set sample bits & speed
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dma.samplebits = (int)sndbits->value;
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if (dma.samplebits != 16 && dma.samplebits != 8) {
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ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
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if (fmt & AFMT_S16_NE) dma.samplebits = 16;
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else if (fmt & AFMT_U8) dma.samplebits = 8;
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}
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/* in relnev 0.9, from here until the next RELNEV 0.9 comment has been moved
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* down to the following RELNEV 0.9 comment -- jaq */
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dma.speed = (int)sndspeed->value;
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if (!dma.speed) {
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for (i=0 ; i<sizeof(tryrates)/4 ; i++)
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if (!ioctl(audio_fd, SNDCTL_DSP_SPEED, &tryrates[i]))
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break;
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dma.speed = tryrates[i];
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}
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dma.channels = (int)sndchannels->value;
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if (dma.channels < 1 || dma.channels > 2)
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dma.channels = 2;
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if (mmapped) {
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dma.samples = info.fragstotal * info.fragsize / (dma.samplebits/8);
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dma.submission_chunk = 1;
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// memory map the dma buffer
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if (!dma.buffer)
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dma.buffer = (unsigned char *) mmap(NULL, info.fragstotal
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* info.fragsize, PROT_WRITE, MAP_FILE|MAP_SHARED, audio_fd, 0);
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if (!dma.buffer || dma.buffer == MAP_FAILED) {
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not mmap %s.\n", snddevice->string);
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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}
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tmp = 0;
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if (dma.channels == 2)
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tmp = 1;
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rc = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
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if (rc < 0)
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not set %s to stereo=%d.", snddevice->string, dma.channels);
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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if (tmp)
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dma.channels = 2;
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else
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dma.channels = 1;
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/* RELNEV 0.9 end deletion */
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if (dma.samplebits == 16)
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{
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rc = AFMT_S16_NE;
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rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc);
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if (rc < 0)
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not support 16-bit data. Try 8-bit.\n");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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}
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else if (dma.samplebits == 8)
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{
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rc = AFMT_U8;
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rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc);
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if (rc < 0)
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not support 8-bit data.\n");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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}
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else
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: %d-bit sound not supported.", dma.samplebits);
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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/* RELNEV 0.9 insert some here */
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rc = ioctl(audio_fd, SNDCTL_DSP_SPEED, &dma.speed);
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if (rc < 0)
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not set %s speed to %d.", snddevice->string, dma.speed);
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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/* RELNEV 0.9 insert the mmap stuff here */
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// toggle the trigger & start her up
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if (!mmapped) {
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dma.submission_chunk = AUDIOBUFFERSIZE;
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dma.samples = AUDIOBUFFERS * dma.submission_chunk * dma.channels;
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dma.samplepos = 0;
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if ((dma.buffer = malloc(dma.samples * (dma.samplebits/8))) == 0) {
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perror(snddevice->string);
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Com_Printf("Could not allocate shm->buffer");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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snd_inited = 1;
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pthread_create(&audio, 0L, thesound, 0L);
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} else {
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tmp = 0;
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rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
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if (rc < 0) {
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not toggle. (1)\n");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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tmp = PCM_ENABLE_OUTPUT;
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rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
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if (rc < 0) {
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perror(snddevice->string);
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Com_Printf("SNDDMA_Init: Could not toggle. (2)\n");
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close(audio_fd);
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audio_fd = -1;
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return 0;
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}
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dma.samplepos = 0;
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snd_inited = 1;
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}
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return 1;
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#endif /* !__sgi */
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}
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/*
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* SNDDMA_GetDMAPos
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*
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* return the current sample position (in mono samples, not stereo)
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* insde the recirculating dma buffer, so the mixing code will know
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* how many samples are required to fill it up.
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*/
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int SNDDMA_GetDMAPos(void) {
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/* merged in from snd_irix.c -- jaq */
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#ifdef __sgi
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long long ustFuture, ustNow;
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if (!sgisnd_aport)
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return 0;
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alGetFrameTime(sgisnd_aport, &sgisnd_startframe, &ustFuture);
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dmGetUST((unsigned long long *) &ustNow);
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sgisnd_startframe -= (long long) ((ustFuture - ustNow) * sgisnd_frames_per_ns);
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sgisnd_startframe += 100;
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/* printf("frame %ld pos %d\n", frame, UST_TO_BUFFPOS(sgisnd_startframe)); */
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return UST_TO_BUFFPOS(sgisnd_startframe);
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#else /* __sgi */
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struct count_info count;
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if (!snd_inited) return 0;
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if (!mmapped)
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return (frags_sent * FRAGSIZE) / (dma.samplebits/8) + FRAGSIZE/16;
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if (ioctl(audio_fd, SNDCTL_DSP_GETOPTR, &count)==-1)
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{
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perror(snddevice->string);
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Com_Printf("SNDDMA_GetDMAPos: GETOPTR failed.\n");
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close(audio_fd);
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audio_fd = -1;
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snd_inited = 0;
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return 0;
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}
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// dma.samplepos = (count.bytes / (dma.samplebits / 8)) & (dma.samples-1);
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// fprintf(stderr, "%d \r", count.ptr);
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dma.samplepos = count.ptr / (dma.samplebits / 8);
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return dma.samplepos;
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#endif /* __sgi */
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}
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/*
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* SNDDMA_Shutdown
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* Reset the sound device for exiting
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*/
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void SNDDMA_Shutdown(void) {
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#if 0
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if (snd_inited)
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{
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close(audio_fd);
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audio_fd = -1;
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snd_inited = 0;
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}
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#endif
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/* merged in from snd_irix.c -- jaq */
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#ifdef __sgi
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if (sgisnd_aport) {
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alClosePort(sgisnd_aport);
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sgisnd_aport = NULL;
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}
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#else
|
|
if (snd_inited) {
|
|
if (!mmapped) {
|
|
snd_inited = 0L;
|
|
pthread_join(audio, 0L);
|
|
|
|
if (dma.buffer) {
|
|
free(dma.buffer);
|
|
dma.buffer = 0L;
|
|
}
|
|
}
|
|
|
|
/* FIXME: use munmap() ? */
|
|
close(audio_fd);
|
|
audio_fd = -1;
|
|
snd_inited = 0;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
==============
|
|
SNDDMA_Submit
|
|
|
|
Send sound to device if buffer isn't really the dma buffer
|
|
===============
|
|
*/
|
|
|
|
/* merged in from snd_irix.c -- jaq */
|
|
#ifdef __sgi
|
|
extern int soundtime;
|
|
#endif
|
|
|
|
void SNDDMA_Submit(void) {
|
|
#ifdef __sgi
|
|
int nFillable, nFilled, nPos;
|
|
int nFrames, nFramesLeft;
|
|
unsigned endtime;
|
|
|
|
if (!sgisnd_aport)
|
|
return;
|
|
|
|
nFillable = alGetFillable(sgisnd_aport);
|
|
nFilled = QSND_BUFFER_FRAMES - nFillable;
|
|
|
|
nFrames = dma.samples >> (dma.channels - 1);
|
|
|
|
if (paintedtime - soundtime < nFrames)
|
|
nFrames = paintedtime - soundtime;
|
|
|
|
if (nFrames <= QSND_SKID)
|
|
return;
|
|
|
|
nPos = UST_TO_BUFFPOS(sgisnd_startframe);
|
|
|
|
/* dump rewritten contents of the buffer */
|
|
if (sgisnd_lastframewritten > sgisnd_startframe) {
|
|
alDiscardFrames(sgisnd_aport, sgisnd_lastframewritten - sgisnd_startframe);
|
|
} else if ((int) (sgisnd_startframe - sgisnd_lastframewritten) >= QSND_BUFFER_FRAMES) {
|
|
/* blow away everything if we've underflowed */
|
|
alDiscardFrames(sgisnd_aport, QSND_BUFFER_FRAMES);
|
|
}
|
|
|
|
/* don't block */
|
|
if (nFrames > nFillable)
|
|
nFrames = nFillable;
|
|
|
|
/* account for stereo */
|
|
nFramesLeft = nFrames;
|
|
if (nPos + nFrames * dma.channels > QSND_BUFFER_SIZE) {
|
|
int nFramesAtEnd = (QSND_BUFFER_SIZE - nPos) >> (dma.channels - 1);
|
|
|
|
alWriteFrames(sgisnd_aport, &dma_buffer[nPos], nFramesAtEnd);
|
|
nPos = 0;
|
|
nFramesLeft -= nFramesAtEnd;
|
|
}
|
|
alWriteFrames(sgi_aport, &dma_buffer[nPos], nFramesLeft);
|
|
|
|
sgisnd_lastframewritten = sgisnd_startframe + nFrames;
|
|
#endif /* __sgi */
|
|
}
|
|
|
|
void SNDDMA_BeginPainting (void)
|
|
{
|
|
}
|
|
|