quakeforge/libs/audio/cd_linux.c

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/*
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
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#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"
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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 },
};
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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;
}
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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)
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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)
{
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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")) {
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I_CDAudio_Play (atoi (Cmd_Argv (2)), false);
return;
}
if (strequal (command, "loop")) {
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I_CDAudio_Play (atoi (Cmd_Argv (2)), true);
return;
}
if (strequal (command, "stop")) {
I_CDAudio_Stop ();
return;
}
if (strequal (command, "pause")) {
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I_CDAudio_Pause ();
return;
}
if (strequal (command, "resume")) {
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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;
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I_CDAudio_Pause ();
} else {
bgmvolume = 1.0;
cdvolume = bgmvolume;
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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)
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I_CDAudio_Play (playTrack, true);
}
}
}
static void
Mus_CDChange (void *data, const cvar_t *cvar)
{
int i;
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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;
}