quakeforge/libs/audio/cd_linux.c
Bill Currie bff0847761 [cvar] Clean up most misinterpreted cvar types
The misinterpretations were due to either the cvar not being accessed
directly by the engine, but via only the callback, or the cvars were
accesssed only by progs (in which case, they should be float). The
remainder are a potential enum (hud gravity) and a "too hard basket"
(rcon password: need to figure out how I want to handle secret strings).
2022-04-24 20:04:06 +09:00

513 lines
10 KiB
C

/*
cd_linux.c
Linux CD Audio support
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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <time.h>
#include <linux/cdrom.h>
#include "QF/cdaudio.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/qargs.h"
#include "QF/sound.h"
#include "QF/sys.h"
#include "QF/plugin/general.h"
#include "QF/plugin/cd.h"
#include "compat.h"
static plugin_t plugin_info;
static plugin_data_t plugin_info_data;
static plugin_funcs_t plugin_info_funcs;
static general_data_t plugin_info_general_data;
static general_funcs_t plugin_info_general_funcs;
static cd_funcs_t plugin_info_cd_funcs;
static qboolean cdValid = false;
static qboolean playing = false;
static qboolean wasPlaying = false;
static qboolean mus_enabled = false;
static qboolean playLooping = false;
static float cdvolume;
static byte remap[100];
static byte playTrack;
static byte maxTrack;
static int cdfile = -1;
static char *mus_cddevice;
static cvar_t mus_cddevice_cvar = {
.name = "mus_cddevice",
.description =
"device to use for CD music",
.default_value = "/dev/cdrom",
.flags = CVAR_NONE,
.value = { .type = 0, .value = &mus_cddevice },
};
static float bgmvolume;
static cvar_t bgmvolume_cvar = {
.name = "bgmvolume",
.description =
"Volume of CD music",
.default_value = "1",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_float, .value = &bgmvolume },
};
static void
I_CDAudio_CloseDoor (void)
{
if (cdfile == -1 || !mus_enabled)
return; // no cd init'd
if (ioctl (cdfile, CDROMCLOSETRAY) == -1)
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromclosetray failed\n");
}
static void
I_CDAudio_Eject (void)
{
if (cdfile == -1 || !mus_enabled)
return; // no cd init'd
if (ioctl (cdfile, CDROMEJECT) == -1)
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromeject failed\n");
}
static int
I_CDAudio_GetAudioDiskInfo (void)
{
struct cdrom_tochdr tochdr;
cdValid = false;
if (ioctl (cdfile, CDROMREADTOCHDR, &tochdr) == -1) {
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromreadtochdr failed\n");
return -1;
}
if (tochdr.cdth_trk0 < 1) {
Sys_MaskPrintf (SYS_snd, "CDAudio: no music tracks\n");
return -1;
}
cdValid = true;
maxTrack = tochdr.cdth_trk1;
return 0;
}
static void
I_CDAudio_Pause (void)
{
if (cdfile == -1 || !mus_enabled)
return;
if (!playing)
return;
if (ioctl (cdfile, CDROMPAUSE) == -1)
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdrompause failed\n");
wasPlaying = playing;
playing = false;
}
static void
I_CDAudio_Stop (void)
{
if (cdfile == -1 || !mus_enabled)
return;
if (!playing)
return;
if (ioctl (cdfile, CDROMSTOP) == -1)
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromstop failed (%d)\n",
errno);
wasPlaying = false;
playing = false;
}
static void
I_CDAudio_Play (int track, qboolean looping)
{
struct cdrom_tocentry entry0;
struct cdrom_tocentry entry1;
struct cdrom_msf msf;
if (cdfile == -1 || !mus_enabled)
return;
if (!cdValid) {
I_CDAudio_GetAudioDiskInfo ();
if (!cdValid)
return;
}
if (track < 0 || track >= (int) sizeof (remap)) {
Sys_Printf ("CDAudio: invalid track number\n");
return;
}
track = remap[track];
if (track < 1 || track > maxTrack) {
I_CDAudio_Stop ();
return;
}
// don't try to play a non-audio track
entry0.cdte_track = track;
entry0.cdte_format = CDROM_MSF;
if (ioctl (cdfile, CDROMREADTOCENTRY, &entry0) == -1) {
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromreadtocentry failed\n");
return;
}
entry1.cdte_track = track + 1;
entry1.cdte_format = CDROM_MSF;
if (entry1.cdte_track > maxTrack) {
entry1.cdte_track = CDROM_LEADOUT;
}
if (ioctl (cdfile, CDROMREADTOCENTRY, &entry1) == -1) {
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromreadtocentry failed\n");
return;
}
if (entry0.cdte_ctrl == CDROM_DATA_TRACK) {
Sys_Printf ("track %i is not audio\n", track);
return;
}
if (playing) {
if (playTrack == track)
return;
I_CDAudio_Stop ();
}
msf.cdmsf_min0 = entry0.cdte_addr.msf.minute;
msf.cdmsf_sec0 = entry0.cdte_addr.msf.second;
msf.cdmsf_frame0 = entry0.cdte_addr.msf.frame;
msf.cdmsf_min1 = entry1.cdte_addr.msf.minute;
msf.cdmsf_sec1 = entry1.cdte_addr.msf.second;
msf.cdmsf_frame1 = entry1.cdte_addr.msf.frame;
Sys_MaskPrintf (SYS_snd, "%2d:%02d:%02d %2d:%02d:%02d\n",
msf.cdmsf_min0,
msf.cdmsf_sec0,
msf.cdmsf_frame0,
msf.cdmsf_min1, msf.cdmsf_sec1, msf.cdmsf_frame1);
if (ioctl (cdfile, CDROMPLAYMSF, &msf) == -1) {
Sys_MaskPrintf (SYS_snd,
"CDAudio: ioctl cdromplaytrkind failed (%s)\n",
strerror (errno));
return;
}
playLooping = looping;
playTrack = track;
playing = true;
if (cdvolume == 0.0)
I_CDAudio_Pause ();
}
static void
I_CDAudio_Resume (void)
{
if (cdfile == -1 || !mus_enabled)
return;
if (!cdValid)
return;
if (!wasPlaying)
return;
if (ioctl (cdfile, CDROMRESUME) == -1)
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromresume failed\n");
playing = true;
}
static void
I_CDAudio_Shutdown (void)
{
if (cdfile != -1) {
I_CDAudio_Stop ();
close (cdfile);
cdfile = -1;
}
mus_enabled = false;
}
static void
I_CD_f (void)
{
const char *command;
int ret, n;
if (Cmd_Argc () < 2)
return;
command = Cmd_Argv (1);
if (strequal (command, "on")) {
mus_enabled = true;
return;
}
if (strequal (command, "off")) {
if (playing)
I_CDAudio_Stop ();
mus_enabled = false;
return;
}
if (strequal (command, "reset")) {
mus_enabled = true;
if (playing)
I_CDAudio_Stop ();
for (n = 0; n < 100; n++)
remap[n] = n;
I_CDAudio_GetAudioDiskInfo ();
return;
}
if (strequal (command, "remap")) {
ret = Cmd_Argc () - 2;
if (ret <= 0) {
for (n = 1; n < 100; n++)
if (remap[n] != n)
Sys_Printf (" %u -> %u\n", n, remap[n]);
return;
}
for (n = 1; n <= ret; n++)
remap[n] = atoi (Cmd_Argv (n + 1));
return;
}
if (strequal (command, "close")) {
I_CDAudio_CloseDoor ();
return;
}
if (!cdValid) {
I_CDAudio_GetAudioDiskInfo ();
if (!cdValid) {
Sys_Printf ("No CD in player.\n");
return;
}
}
if (strequal (command, "play")) {
I_CDAudio_Play (atoi (Cmd_Argv (2)), false);
return;
}
if (strequal (command, "loop")) {
I_CDAudio_Play (atoi (Cmd_Argv (2)), true);
return;
}
if (strequal (command, "stop")) {
I_CDAudio_Stop ();
return;
}
if (strequal (command, "pause")) {
I_CDAudio_Pause ();
return;
}
if (strequal (command, "resume")) {
I_CDAudio_Resume ();
return;
}
if (strequal (command, "eject")) {
if (playing)
I_CDAudio_Stop ();
I_CDAudio_Eject ();
cdValid = false;
return;
}
if (strequal (command, "info")) {
Sys_Printf ("%u tracks\n", maxTrack);
if (playing)
Sys_Printf ("Currently %s track %u\n",
playLooping ? "looping" : "playing", playTrack);
else if (wasPlaying)
Sys_Printf ("Paused %s track %u\n",
playLooping ? "looping" : "playing", playTrack);
Sys_Printf ("Volume is %g\n", cdvolume);
return;
}
}
static void
I_CDAudio_Update (void)
{
struct cdrom_subchnl subchnl;
static time_t lastchk;
if (!mus_enabled)
return;
if (bgmvolume != cdvolume) {
if (cdvolume) {
bgmvolume = 0.0;
cdvolume = bgmvolume;
I_CDAudio_Pause ();
} else {
bgmvolume = 1.0;
cdvolume = bgmvolume;
I_CDAudio_Resume ();
}
}
if (playing && lastchk < time (NULL)) {
lastchk = time (NULL) + 2; // two seconds between chks
subchnl.cdsc_format = CDROM_MSF;
if (ioctl (cdfile, CDROMSUBCHNL, &subchnl) == -1) {
Sys_MaskPrintf (SYS_snd, "CDAudio: ioctl cdromsubchnl failed\n");
playing = false;
return;
}
if (subchnl.cdsc_audiostatus != CDROM_AUDIO_PLAY &&
subchnl.cdsc_audiostatus != CDROM_AUDIO_PAUSED) {
playing = false;
if (playLooping)
I_CDAudio_Play (playTrack, true);
}
}
}
static void
Mus_CDChange (void *data, const cvar_t *cvar)
{
int i;
I_CDAudio_Shutdown ();
if (strequal (mus_cddevice, "none")) {
return;
}
cdfile = open (mus_cddevice, O_RDONLY | O_NONBLOCK);
if (cdfile == -1) {
Sys_MaskPrintf (SYS_snd,
"Mus_CDInit: open device \"%s\" failed (error %i)\n",
mus_cddevice, errno);
return;
}
if (I_CDAudio_GetAudioDiskInfo ()) {
Sys_Printf ("CDAudio_Init: No CD in player.\n");
cdValid = false;
}
for (i = 0; i < 100; i++)
remap[i] = i;
mus_enabled = true;
}
static void
I_CDAudio_Init (void)
{
Cvar_Register (&mus_cddevice_cvar, Mus_CDChange, 0);
Cvar_Register (&bgmvolume_cvar, 0, 0);
}
static general_funcs_t plugin_info_general_funcs = {
I_CDAudio_Init,
I_CDAudio_Shutdown,
};
static cd_funcs_t plugin_info_cd_funcs = {
0,
I_CD_f,
I_CDAudio_Pause,
I_CDAudio_Play,
I_CDAudio_Resume,
I_CDAudio_Update,
};
static plugin_funcs_t plugin_info_funcs = {
&plugin_info_general_funcs,
0,
&plugin_info_cd_funcs,
0,
0,
0,
};
static plugin_data_t plugin_info_data = {
&plugin_info_general_data,
0,
0,
0,
0,
0,
};
static plugin_t plugin_info = {
qfp_cd,
0,
QFPLUGIN_VERSION,
"0.1",
"Linux CD Audio output\n",
"Copyright (C) 2001 contributors of the QuakeForge project\n"
"Please see the file \"AUTHORS\" for a list of contributors\n",
&plugin_info_funcs,
&plugin_info_data,
};
PLUGIN_INFO (cd, linux)
{
return &plugin_info;
}