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sequencer states

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This commit is contained in:
Wolfgang Hottgenroth
2024-03-26 22:12:46 +01:00
parent 9989a52c38
commit 2e629f12aa
5 changed files with 57 additions and 121 deletions
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15
sound-driver/sequencer.c
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@ -3,6 +3,7 @@
#include "psg.h"
void sequencerInit() {
}
@ -10,7 +11,7 @@ void sequencerExec(void *handle) {
t_melody *melody = (t_melody*) handle;
switch (melody->state) {
case 0:
case e_PlayTone:
if (melody->tones[melody->idx].length == e_L_EndMark) {
melody->idx = 0;
}
@ -18,20 +19,20 @@ void sequencerExec(void *handle) {
psgPlayTone(melody->channel, melody->tones[melody->idx].octave, melody->tones[melody->idx].note);
melody->lengthCnt = melody->tones[melody->idx].length;
melody->state = 1;
melody->state = e_HoldTone;
break;
case 1:
case e_HoldTone:
melody->lengthCnt -= 1;
if (melody->lengthCnt == 0) {
melody->state = 2;
melody->state = e_SeparateTone;
}
break;
case 2:
case e_SeparateTone:
if (! (melody->tones[melody->idx].legato)) {
psgPlayTone(melody->channel, e_O_Null, e_Pause);
}
melody->idx += 1;
melody->state = 0;
melody->state = e_PlayTone;
break;
}
}
@ -39,7 +40,7 @@ void sequencerExec(void *handle) {
uint8_t sequencerPlayMelody(t_melody *melody) {
melody->idx = 0;
melody->lengthCnt = 0;
melody->state = 0;
melody->state = e_PlayTone;
schAdd(sequencerExec, (void*) melody, 0, 10);
return 0;
}