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/***************************************************************************
* S3m/Mod player by Daniel Marks (dmarks@ais.net)
* GUS support by David Jeske (jeske@uiuc.edu)
*
* (C) 1994,1995 By Daniel Marks and David Jeske
*
* While we retain the copyright to this code, this source code is FREE.
* You may use it in any way you wish, in any product you wish. You may
* NOT steal the copyright for this code from us.
*
* We respectfully ask that you email one of us, if possible, if you
* produce something significant with this code, or if you have any bug
* fixes to contribute. We also request that you give credit where
* credit is due if you include part of this code in a program of your own.
*
* Email: s3mod@uiuc.edu
* jeske@uiuc.edu
*
* See the associated README file for Thanks
***************************************************************************
*
* mod.h - mod/s3m portable module
*
*/
#ifndef _MOD_H
#define _MOD_H 1
#include "config.h"
#ifdef NEAR_FAR_PTR
typedef uint8 near *sample8_near;
typedef uint16 near *sample16_near;
typedef uint8 far *sample8_far;
typedef uint16 far *sample16_far;
typedef uint8 far *pattern_ptr;
#else
typedef uint8 *sample8_near;
typedef uint16 *sample16_near;
typedef uint8 *sample8_far;
typedef uint16 *sample16_far;
typedef uint8 *pattern_ptr;
#endif
#define EFF_VOL_SLIDE 0x01
#define EFF_PORT_DOWN 0x02
#define EFF_PORT_UP 0x04
#define EFF_VIBRATO 0x08
#define EFF_ARPEGGIO 0x10
#define EFF_PORT_TO 0x20
#define EFF_TREMOLO 0x40
#define EFF_RETRIG 0x80
#define MIX_BUF_SIZE 2048
#define DEF_TEMPO_NTSC 6
#define DEF_TEMPO_PAL 6
#define DEF_BPM_NTSC 125
#define DEF_BPM_PAL 145
#define MIDCRATE 8448
#define MAX_SAMPLES 100
#define MAX_TRACKS 32
#define S3M_MAGIC1 0x101A
#define S3M_MAGIC2 "SCRM"
#define S3M_INSTR2 "SCRS"
typedef struct _s3m_header
{
int8 name[28];
uint16 s3m_magic_1;
uint16 npi1;
uint16 seq_len;
uint16 n_instr;
uint16 n_patts;
uint16 word_4;
uint32 long_1;
int8 s3m_magic_2[4];
uint8 volume;
uint8 tempo;
uint8 bpm;
uint8 fill_1[13];
uint8 channel_maps[32];
} s3m_header;
typedef struct _s3m_instr
{
uint8 flag;
int8 name[13];
uint16 position;
uint32 size;
uint32 rep_start;
uint32 rep_end;
uint16 volume;
uint8 byte_1;
uint8 looped;
uint16 period_fine;
uint8 fill_3[10];
uint16 word_3;
uint16 word_4;
int8 comment[28];
int8 id[4];
} s3m_instr;
typedef struct _mod_voice
{
int8 sample_name[22];
uint16 sample_length;
uint8 finetune_value;
uint8 volume;
uint16 repeat_point;
uint16 repeat_length;
} mod_voice;
typedef struct _song_data
{
int8 name[20];
uint8 tracks;
uint8 track_shift;
pattern_ptr patterns[256];
sample8_far samples[MAX_SAMPLES];
uint16 sample_length[MAX_SAMPLES];
uint32 finetune_rate[MAX_SAMPLES];
uint16 period_low_limit[MAX_SAMPLES];
uint16 period_high_limit[MAX_SAMPLES];
uint16 finetune_value[MAX_SAMPLES];
uint16 volume[MAX_SAMPLES];
uint16 repeat_point[MAX_SAMPLES];
uint16 repeat_length[MAX_SAMPLES];
uint8 positions[256];
uint8 song_length_patterns;
uint8 song_repeat_patterns;
uint16 bpm;
uint16 tempo;
uint8 s3m;
} song_data;
typedef struct _song_15
{
uint8 song_length_patterns;
uint8 song_repeat_patterns;
uint8 positions[128];
} song_15;
typedef struct track_info
{
sample8_far samples;
uint16 position;
uint16 length;
uint16 repeat;
uint16 replen;
int8 volume;
int8 error;
uint16 pitch;
uint16 old_position;
int8 samp;
int8 note_hit; /* for the GUS */
int8 note; /* for the GUS */
int16 panning; /* for the GUS -127 to 127 */
int16 playing_period; /* for GUS */
int8 playing_volume; /* for GUS */
int16 start_period; /* the period at the start of the
track
*/
int16 period;
uint16 step;
uint8 effect;
uint16 portto;
uint8 vibpos;
uint8 trempos;
uint16 oldsampofs;
int16 arp[3];
uint16 arpindex;
int16 oldperiod;
int16 vol_slide;
uint16 port_inc;
uint16 port_up;
uint16 port_down;
uint16 vib_rate;
uint16 vib_depth;
uint16 trem_rate;
uint16 trem_depth;
uint8 retrig;
uint32 finetune_rate;
uint16 period_low_limit;
uint16 period_high_limit;
} track_info;
#ifdef NEAR_FAR_PTR
typedef track_info near *track_info_ptr;
#else
typedef track_info *track_info_ptr;
#endif
int load_mod(char *filename, song_data *data, int8 noprint);
int16 load_s3m(char *filename, song_data *data, int8 noprint);
void startplaying(int loud);
void updatetracks(void);
void mixtrack_8_stereo(track_info *track, uint8 *buffer, uint16 buflen, uint32 channel);
void mixtrack_8_mono(track_info *track, uint8 *buffer, uint16 buflen);
void mixtrack_16_stereo(track_info *track, uint16 *buffer, uint16 buflen, uint32 channel);
void mixtrack_16_mono(track_info *track, uint16 *buffer, uint16 buflen);
extern uint8 sintable[];
extern song_data mod;
extern uint8 order_pos;
extern uint8 tempo;
extern uint8 tempo_wait;
extern uint8 bpm;
extern uint8 row;
extern uint8 break_row;
extern uint16 bpm_samples;
extern uint8 *buf_ptr;
extern uint16 buf_len;
extern uint16 buf_rep;
extern pattern_ptr note;
extern track_info tracks[];
extern track_info old_tracks[];
extern int16 mod_done;
extern uint8 loop_mod;
extern uint16 period_set[];
union vol_union
{
int8 vol_table[16640];
int16 vol_table16[16640];
};
extern union vol_union vol;
#endif /* _MOD_H */
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