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tracker.4.6.lzh
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TRACKER4.6
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channel.h
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1994-11-24
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/* channel.h
vi:ts=3 sw=3:
*/
/* $Id: channel.h,v 4.2 1994/11/15 16:11:01 espie Exp espie $
* $Log: channel.h,v $
* Revision 4.2 1994/11/15 16:11:01 espie
* *** empty log message ***
*
*
* Revision 3.9 1993/11/17 15:31:16 espie
* audio_channel private.
* Amiga support.
* Added finetune.
*
* Revision 2.7 1992/11/13 13:24:24 espie
* Added parameters for extended Retriger command.
* Added transpose feature.
* Structured part of the code, especially replay ``automaton''
* and setting up of effects.
*
* Revision 1.5 1991/11/16 16:54:19 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.
* Added fields for arpeggio.
*/
#ifndef NUMBER_PATTERNS
#define NUMBER_PATTERNS 128
#endif
#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;
struct audio_channel *audio;
int finetune;
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 */
int retrig; /* delay for extended retrig command */
int current;
/* current command to adjust parameters */
void (*adjust) P((struct channel *ch));
};
#define DO_NOTHING 0
#define SET_SPEED 1
#define SET_SKIP 2
#define SET_FASTSKIP 4
#define SET_FINESPEED 32
#define JUMP_PATTERN 8
#define DELAY_PATTERN 16
#define NORMAL_SPEED 6
#define NORMAL_FINESPEED 125
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 */
char gonethrough[NUMBER_PATTERNS + 1]; /* to check for repeats */
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_finespeed;
int pitch, note, para; /* some extra parameters effects need */
int loop_note_num, loop_counter;
/* for command E6 */
};