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/* seqinterf.c -- interface to sequence data type for XLISP */
#include "switches.h"
#include "xlisp.h"
#include "stdio.h"
#include "cext.h"
#include "userio.h"
#include "midifns.h"
#include "timebase.h"
#include "moxc.h"
#include "seq.h"
#include "seqinterf.h"
/* seq_next -- advance to the next event, return TRUE if found */
/**/
boolean seq_next(seq_type seq)
{
if (seq->current) {
seq->current = seq->current->next;
}
return seq->current != NULL;
}
/* seq_get -- get event data for the current event */
/**/
void seq_get(seq_type seq, long *eventtype, long *ntime, long *line, long *chan,
long *value1, long *value2, long *dur)
{
event_type ev = seq->current;
if (!ev) *eventtype = SEQ_DONE;
else if (is_note(ev)) {
if (ev->value != NO_PITCH) {
*eventtype = SEQ_NOTE;
*ntime = ev->ntime;
*line = ev->nline;
*chan = vc_voice(ev->nvoice);
*value1 = ev->value;
*value2 = ev->u.note.ndur & 0xFF;
*dur = ev->u.note.ndur >> 8;
} else {
*eventtype = SEQ_OTHER;
}
} else {
*eventtype = SEQ_CTRL;
*ntime = ev->ntime;
*line = ev->nline;
*chan = vc_voice(ev->nvoice);
*value2 = ev->value;
switch (vc_ctrl(ev->nvoice)) {
case PSWITCH_CTRL:
*value1 = PORTASWITCH;
break;
case MODWHEEL_CTRL:
*value1 = MODWHEEL;
break;
case TOUCH_CTRL:
*eventtype = SEQ_TOUCH;
*value1 = ev->value;
break;
case VOLUME_CTRL:
*value1 = VOLUME;
break;
case BEND_CTRL:
*eventtype = SEQ_BEND;
*value1 = ev->value << 6;
break;
case PROGRAM_CTRL:
*eventtype = SEQ_PRGM;
*value1 = ev->value + 1;
break;
case ESC_CTRL:
switch (ev->value) {
case CALL_VALUE:
case CLOCK_VALUE:
case MACRO_VALUE:
case CTRLRAMP_VALUE:
case DEFRAMP_VALUE:
case SETI_VALUE:
*eventtype = SEQ_OTHER;
break;
case MACCTRL_VALUE:
*value1 = ev->u.macctrl.ctrl_number;
*value2 = ev->u.macctrl.value;
break;
default:
xlabort("unexpected ESC_CTRL value\n");
break;
}
break;
default:
xlabort("unexpected seq data\n");
break;
}
}
}
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