2021-05-12 08:58:55 +00:00
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#include "dummy.h"
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2021-05-12 10:22:01 +00:00
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#include <math.h>
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2021-05-12 08:58:55 +00:00
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void DivPlatformDummy::acquire(short& l, short& r) {
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l=0;
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2021-05-12 10:22:01 +00:00
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for (unsigned char i=0; i<chans; i++) {
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if (chan[i].active) {
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l+=((chan[i].pos>=0x8000)?chan[i].vol:-chan[i].vol)<<5;
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chan[i].pos+=chan[i].freq;
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}
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}
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r=l;
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}
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void DivPlatformDummy::tick() {
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for (unsigned char i=0; i<chans; i++) {
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chan[i].vol=chan[i].vol-(chan[i].vol>>3);
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}
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2021-05-12 08:58:55 +00:00
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}
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int DivPlatformDummy::dispatch(DivCommand c) {
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2021-05-12 10:22:01 +00:00
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON:
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chan[c.chan].vol=0x7f;
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chan[c.chan].freq=16.4f*pow(2.0f,((float)c.value/12.0f));
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chan[c.chan].active=true;
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break;
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].active=false;
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break;
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default:
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break;
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}
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2021-05-12 08:58:55 +00:00
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return 1;
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}
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int DivPlatformDummy::init(DivEngine* p, int channels, int sugRate) {
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parent=p;
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2021-05-12 10:22:01 +00:00
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rate=65536;
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chans=channels;
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2021-05-12 08:58:55 +00:00
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return channels;
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2021-05-12 10:22:01 +00:00
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}
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