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quakeforge/libs/audio/targets/snd_sun.c

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/*
snd_sun.c
(description)
Copyright (C) 1996-1997 Id Software, Inc.
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
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/shm.h>
#include <sys/wait.h>
#include <stdio.h>
#include <sys/audioio.h>
#include <errno.h>
#include "QF/console.h"
#include "QF/qtypes.h"
#include "QF/qargs.h"
#include "QF/sound.h"
#include "QF/plugin.h"
int audio_fd;
int snd_inited;
static int wbufp;
static audio_info_t info;
#define BUFFER_SIZE 8192
unsigned char dma_buffer[BUFFER_SIZE];
unsigned char pend_buffer[BUFFER_SIZE];
int pending;
plugin_t plugin_info;
plugin_data_t plugin_info_data;
plugin_funcs_t plugin_info_funcs;
general_data_t plugin_info_general_data;
general_funcs_t plugin_info_general_funcs;
sound_data_t plugin_info_sound_data;
sound_funcs_t plugin_info_sound_funcs;
void I_S_Init (void);
void I_S_Shutdown (void);
void I_S_AmbientOff (void);
void I_S_AmbientOn (void);
void I_S_TouchSound (char *sample);
void I_S_ClearBuffer (void);
void I_S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation);
void I_S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation);
void I_S_StopSound (int entnum, int entchannel);
sfx_t *I_S_PrecacheSound (char *sample);
void I_S_ClearPrecache (void);
void I_S_Update (vec3_t origin, vec3_t v_forward, vec3_t v_right, vec3_t v_up);
void I_S_StopAllSounds (qboolean clear);
void I_S_BeginPrecaching (void);
void I_S_EndPrecaching (void);
void I_S_ExtraUpdate (void);
void I_S_LocalSound (char *s);
qboolean
SNDDMA_Init (void)
{
if (snd_inited) {
printf ("Sound already init'd\n");
return 0;
}
shm = &sn;
shm->splitbuffer = 0;
audio_fd = open ("/dev/audio", O_WRONLY | O_NDELAY);
if (audio_fd < 0) {
if (errno == EBUSY) {
Con_Printf ("Audio device is being used by another process\n");
}
perror ("/dev/audio");
Con_Printf ("Could not open /dev/audio\n");
return (0);
}
if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0) {
perror ("/dev/audio");
Con_Printf ("Could not communicate with audio device.\n");
close (audio_fd);
return 0;
}
//
// set to nonblock
//
if (fcntl (audio_fd, F_SETFL, O_NONBLOCK) < 0) {
perror ("/dev/audio");
close (audio_fd);
return 0;
}
AUDIO_INITINFO (&info);
shm->speed = 11025;
// try 16 bit stereo
info.play.encoding = AUDIO_ENCODING_LINEAR;
info.play.sample_rate = 11025;
info.play.channels = 2;
info.play.precision = 16;
if (ioctl (audio_fd, AUDIO_SETINFO, &info) < 0) {
info.play.encoding = AUDIO_ENCODING_LINEAR;
info.play.sample_rate = 11025;
info.play.channels = 1;
info.play.precision = 16;
if (ioctl (audio_fd, AUDIO_SETINFO, &info) < 0) {
Con_Printf ("Incapable sound hardware.\n");
close (audio_fd);
return 0;
}
Con_Printf ("16 bit mono sound initialized\n");
shm->samplebits = 16;
shm->channels = 1;
} else { // 16 bit stereo
Con_Printf ("16 bit stereo sound initialized\n");
shm->samplebits = 16;
shm->channels = 2;
}
shm->soundalive = true;
shm->samples = sizeof (dma_buffer) / (shm->samplebits / 8);
shm->samplepos = 0;
shm->submission_chunk = 1;
shm->buffer = (unsigned char *) dma_buffer;
snd_inited = 1;
return 1;
}
int
SNDDMA_GetDMAPos (void)
{
if (!snd_inited)
return (0);
if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0) {
perror ("/dev/audio");
Con_Printf ("Could not communicate with audio device.\n");
close (audio_fd);
snd_inited = 0;
return (0);
}
return ((info.play.samples * shm->channels) % shm->samples);
}
int
SNDDMA_GetSamples (void)
{
if (!snd_inited)
return (0);
if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0) {
perror ("/dev/audio");
Con_Printf ("Could not communicate with audio device.\n");
close (audio_fd);
snd_inited = 0;
return (0);
}
return info.play.samples;
}
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)
{
int bsize;
int bytes, b;
static unsigned char writebuf[1024];
unsigned char *p;
int idx;
int stop = paintedtime;
if (paintedtime < wbufp)
wbufp = 0; // reset
bsize = shm->channels * (shm->samplebits / 8);
bytes = (paintedtime - wbufp) * bsize;
if (!bytes)
return;
if (bytes > sizeof (writebuf)) {
bytes = sizeof (writebuf);
stop = wbufp + bytes / bsize;
}
p = writebuf;
idx = (wbufp * bsize) & (BUFFER_SIZE - 1);
for (b = bytes; b; b--) {
*p++ = dma_buffer[idx];
idx = (idx + 1) & (BUFFER_SIZE - 1);
}
wbufp = stop;
if (write (audio_fd, writebuf, bytes) < bytes)
printf ("audio can't keep up!\n");
}
plugin_t *
PluginInfo (void) {
plugin_info.type = qfp_sound;
plugin_info.api_version = QFPLUGIN_VERSION;
plugin_info.plugin_version = "0.1";
plugin_info.description = "SUN digital output";
plugin_info.copyright = "Copyright (C) 1996-1997 id Software, Inc.\n"
"Copyright (C) 1999,2000,2001 contributors of the QuakeForge project\n" "Please see the file \"AUTHORS\" for a list of contributors";
plugin_info.functions = &plugin_info_funcs;
plugin_info.data = &plugin_info_data;
plugin_info_data.general = &plugin_info_general_data;
plugin_info_data.input = NULL;
plugin_info_data.sound = &plugin_info_sound_data;
plugin_info_funcs.general = &plugin_info_general_funcs;
plugin_info_funcs.input = NULL;
plugin_info_funcs.sound = &plugin_info_sound_funcs;
plugin_info_general_funcs.p_Init = I_S_Init;
plugin_info_general_funcs.p_Shutdown = I_S_Shutdown;
plugin_info_sound_funcs.pS_AmbientOff = I_S_AmbientOff;
plugin_info_sound_funcs.pS_AmbientOn = I_S_AmbientOn;
plugin_info_sound_funcs.pS_TouchSound = I_S_TouchSound;
plugin_info_sound_funcs.pS_ClearBuffer = I_S_ClearBuffer;
plugin_info_sound_funcs.pS_StaticSound = I_S_StaticSound;
plugin_info_sound_funcs.pS_StartSound = I_S_StartSound;
plugin_info_sound_funcs.pS_StopSound = I_S_StopSound;
plugin_info_sound_funcs.pS_PrecacheSound = I_S_PrecacheSound;
plugin_info_sound_funcs.pS_ClearPrecache = I_S_ClearPrecache;
plugin_info_sound_funcs.pS_Update = I_S_Update;
plugin_info_sound_funcs.pS_StopAllSounds = I_S_StopAllSounds;
plugin_info_sound_funcs.pS_BeginPrecaching = I_S_BeginPrecaching;
plugin_info_sound_funcs.pS_EndPrecaching = I_S_EndPrecaching;
plugin_info_sound_funcs.pS_ExtraUpdate = I_S_ExtraUpdate;
plugin_info_sound_funcs.pS_LocalSound = I_S_LocalSound;
return &plugin_info;
}
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