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- /* channel.h */
-
- /* $Author: espie $
- * $Id: channel.h,v 2.3 1991/12/03 23:03:39 espie Exp espie $
- * $Revision: 2.3 $
- * $Log: channel.h,v $
- * Revision 2.3 1991/12/03 23:03:39 espie
- * Added transpose feature.
- *
- * Revision 2.2 1991/11/19 16:07:19 espie
- * Added comments, moved minor stuff around.
- *
- * Revision 2.1 1991/11/17 23:07:58 espie
- * Added some comments.
- *
- * Revision 2.0 1991/11/17 21:42:08 espie
- * Structured part of the code, especially replay ``automaton''
- * and setting up of effects.
- *
- * Revision 1.5 1991/11/16 16:54:19 espie
- * Added comments to each and every field.
- *
- * Revision 1.4 1991/11/16 15:42:43 espie
- * tabs.
- *
- * Revision 1.3 1991/11/09 17:47:33 espie
- * Bug correction: when doing arpeggio, there might not
- * be a new note, so we have to save the old note value
- * and do the arppeggio on that note.
- *
- * Revision 1.2 1991/11/07 21:40:16 espie
- * Added fields for arpeggio.
- *
- * Revision 1.1 1991/11/06 09:46:06 espie
- * Initial revision
- *
- *
- */
-
-
- /* DO_NOTHING is also used for the automaton */
- #define DO_NOTHING 0
- #define PLAY 1
- #define REPLAY 2
-
- #define MAX_ARP 3
-
- /* there is no note in each channel initially.
- * This is defensive programming, because some
- * commands rely on the previous note. Checking
- * that there was no previous note is a way to
- * detect faulty modules.
- */
- #define NO_NOTE 255
-
- struct channel
- {
- struct sample_info *samp;
- int mode; /* automaton state for the sound generatio */
- unsigned int pointer; /* current sample position (fixed pos) */
- unsigned int step; /* sample position increment (gives pitch) */
- int volume; /* current volume of the sample (0-64) */
- int pitch; /* current pitch of the sample */
- int note; /* we have to save the note cause */
- /* we can do an arpeggio without a new note */
-
- int arp[MAX_ARP]; /* the three pitch values for an arpeggio */
- int arpindex; /* an index to know which note the arpeggio is doing
- */
-
- int viboffset; /* current offset for vibrato (if any) */
- int vibdepth; /* depth of vibrato (if any) */
-
- int slide; /* step size of pitch slide */
-
- int pitchgoal; /* pitch to slide to */
- int pitchrate; /* step rate for portamento */
-
- int volumerate; /* step rate for volume slide */
-
- int vibrate; /* step rate for vibrato */
- void (*adjust)(); /* current command to adjust parameters */
- };
-
- /* DO_NOTHING was already declared for the channel
- #define DO_NOTHING 0 */
- #define SET_SPEED 1
- #define SET_SKIP 2
- #define SET_FASTSKIP 4
-
- #define NORMAL_SPEED 6
- #define NORMAL_FINESPEED 100
-
- struct automaton
- {
- int pattern_num; /* the pattern in the song */
- int note_num; /* the note in the pattern */
- struct block *pattern; /* the physical pattern */
- struct song_info *info; /* we need the song_info */
-
- int counter; /* the fine position inside the effect */
- int speed; /* the `speed', number of effect repeats */
- int finespeed; /* the finespeed, base is 100 */
-
- int do_stuff; /* keeping some stuff to do */
- /* ... and parameters for it: */
- int new_speed, new_note, new_pattern, new_fastspeed;
-
- int pitch, note, para; /* some extra parameters effects need */
- };
-