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/*************************************************************************
* musserver.h
*
* update to lxdoom
* Copyright (C) 1999 Rafael Reilova (rreilova@ececs.uc.edu)
*
* Original code
* Copyright (C) 1995 Michael Heasley (mheasley@hmc.edu)
*
* 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 the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*************************************************************************/
#ifdef __linux__
# include <sys/soundcard.h>
# include <linux/version.h>
/* Seems AWE began to work on 2.1.64 */
# if (LINUX_VERSION_CODE > 131392)
# define ENABLE_AWE
# include <linux/awe_voice.h>
# endif
#elif defined(__FreeBSD__)
# include <machine/soundcard.h>
# include <awe_voice.h>
#endif
extern char *progname;
extern int verbose;
extern int unknevents;
extern int timer_res; /* sequencer timer resolution (tics/sec) */
extern int curtime; /* current song time in sequencer tics */
extern int voxware_octave_bug; /* increase octave by 1 when using FM */
extern int dumpmus; /* dump to disk music and FM-patches */
#define DFL_VOL 12 /* default volume when standalone 1-15 (0 == off) */
#define CLEAN_EXIT 0
#define IO_ERROR 1
#define MISC_ERROR 2 /* doesn't call perror() */
#define MUS_LOOP 1
#define MUS_NOLOOP 0
#define MUS_NEWSONG 1
#define MUS_SAMESONG 0
#define NO_PATCH_NEEDED 0
#define PATCH_NEEDED 1
/* number of instruments */
#define N_INTR 175
/* number of MIDI channels */
#define N_CHN 16
typedef char (instr_nam)[32];
/*
* Note: gcc attribute "packed" is used to make sure the compiler doesn't
* try to optimize the structures by aligning elements to word boundaries, etc.
*/
struct OPL2instrument {
unsigned char trem_vibr_1; /* OP 1: tremolo/vibrato/sustain/KSR/multi */
unsigned char att_dec_1; /* OP 1: attack rate/decay rate */
unsigned char sust_rel_1; /* OP 1: sustain level/release rate */
unsigned char wave_1; /* OP 1: waveform select */
unsigned char scale_1; /* OP 1: key scale level */
unsigned char level_1; /* OP 1: output level */
unsigned char feedback; /* feedback/AM-FM (both operators) */
unsigned char trem_vibr_2; /* OP 2: tremolo/vibrato/sustain/KSR/multi */
unsigned char att_dec_2; /* OP 2: attack rate/decay rate */
unsigned char sust_rel_2; /* OP 2: sustain level/release rate */
unsigned char wave_2; /* OP 2: waveform select */
unsigned char scale_2; /* OP 2: key scale level */
unsigned char level_2; /* OP 2: output level */
unsigned char unused;
short basenote; /* base note offset */
} __attribute__ ((packed));
struct opl_instr {
unsigned short flags;
#define FL_FIXED_PITCH 0x0001 // note has fixed pitch (drum note)
#define FL_UNKNOWN 0x0002 // ??? (used in instrument #65 only)
#define FL_DOUBLE_VOICE 0x0004 // use two voices instead of one
unsigned char finetune;
unsigned char note;
struct OPL2instrument patchdata[2];
} __attribute__ ((packed));
typedef struct OPLfile {
unsigned char id[8];
struct opl_instr *opl_instruments;
instr_nam *instrument_nam;
} OPLFILE;
struct MUSheader {
char id[4]; // identifier "MUS" 0x1A
unsigned short scoreLen;
unsigned short scoreStart;
unsigned short channels; // count of primary channels
unsigned short sec_channels; // count of secondary channels
unsigned short instrCnt;
unsigned short dummy;
} __attribute__ ((packed));
typedef struct MUSfile {
struct MUSheader header;
unsigned short *instr_pnum;
unsigned char *musdata;
} MUSFILE;
typedef enum {
USE_AWE_SYNTH, USE_MIDI_SYNTH, USE_FM_SYNTH,
USE_BEST_SYNTH, LIST_ONLY_SYNTH
} synthdev_t;
typedef enum {
MIDI_START, MIDI_STOP, MIDI_PAUSE, MIDI_RESUME
} mid_timer_t;
extern void cleanup(int status, const char *msg) __attribute__ ((noreturn));
extern void mark_nonblock (void);
extern void mark_block (void);
extern const MUSFILE *readmus(FILE *fp);
extern const OPLFILE *read_genmidi(FILE *fp);
extern int playmus(const struct MUSfile *mus, int newsong, int looping);
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