mirror of https://github.com/mgba-emu/mgba.git
Start audio
This commit is contained in:
Jeffrey Pfau
parent
25885e1e82
commit
3439fa5bf4
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@ -0,0 +1,72 @@
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#include "gba-audio.h"
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#include "gba.h"
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void GBAAudioInit(struct GBAAudio* audio) {
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(void)(audio);
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}
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void GBAAudioDeinit(struct GBAAudio* audio) {
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(void)(audio);
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}
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void GBAAudioWriteSOUND1CNT_LO(struct GBAAudio* audio, uint16_t value) {
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audio->ch1.sweep.packed = value;
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}
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void GBAAudioWriteSOUND1CNT_HI(struct GBAAudio* audio, uint16_t value) {
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audio->ch1.wave.packed = value;
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}
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void GBAAudioWriteSOUND1CNT_X(struct GBAAudio* audio, uint16_t value) {
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audio->ch1.control.packed = value;
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}
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void GBAAudioWriteSOUND2CNT_LO(struct GBAAudio* audio, uint16_t value) {
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audio->ch2.wave.packed = value;
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}
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void GBAAudioWriteSOUND2CNT_HI(struct GBAAudio* audio, uint16_t value) {
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audio->ch2.control.packed = value;
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}
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void GBAAudioWriteSOUND3CNT_LO(struct GBAAudio* audio, uint16_t value) {
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audio->ch3.bank.packed = value;
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}
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void GBAAudioWriteSOUND3CNT_HI(struct GBAAudio* audio, uint16_t value) {
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audio->ch3.wave.packed = value;
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}
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void GBAAudioWriteSOUND3CNT_X(struct GBAAudio* audio, uint16_t value) {
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audio->ch3.control.packed = value;
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}
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void GBAAudioWriteSOUND4CNT_LO(struct GBAAudio* audio, uint16_t value) {
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audio->ch4.wave.packed = value;
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}
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void GBAAudioWriteSOUND4CNT_HI(struct GBAAudio* audio, uint16_t value) {
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audio->ch4.control.packed = value;
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}
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void GBAAudioWriteSOUNDCNT_LO(struct GBAAudio* audio, uint16_t value) {
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GBALog(audio->p, GBA_LOG_STUB, "Audio unimplemented");
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}
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void GBAAudioWriteSOUNDCNT_HI(struct GBAAudio* audio, uint16_t value) {
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GBALog(audio->p, GBA_LOG_STUB, "Audio unimplemented");
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}
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void GBAAudioWriteSOUNDCNT_X(struct GBAAudio* audio, uint16_t value) {
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GBALog(audio->p, GBA_LOG_STUB, "Audio unimplemented");
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}
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void GBAAudioWriteWaveRAM(struct GBAAudio* audio, int address, uint32_t value) {
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GBALog(audio->p, GBA_LOG_STUB, "Audio unimplemented");
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}
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void GBAAudioWriteFIFO(struct GBAAudio* audio, int address, uint32_t value) {
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GBALog(audio->p, GBA_LOG_STUB, "Audio unimplemented");
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}
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@ -0,0 +1,132 @@
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#ifndef GBA_AUDIO_H
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#define GBA_AUDIO_H
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#include <stdint.h>
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union GBAAudioWave {
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struct {
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unsigned length : 6;
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unsigned duty : 2;
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unsigned stepTime : 3;
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unsigned direction : 1;
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unsigned initialVolume : 4;
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};
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uint16_t packed;
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};
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union GBAAudioSquareControl {
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struct {
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unsigned frequency : 11;
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unsigned : 3;
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unsigned stop : 1;
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unsigned restart : 1;
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};
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uint16_t packed;
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};
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struct GBAAudioChannel1 {
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union GBAAudioSquareSweep {
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struct {
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unsigned shift : 3;
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unsigned direction : 1;
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unsigned time : 3;
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unsigned : 9;
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};
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uint16_t packed;
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} sweep;
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union GBAAudioWave wave;
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union GBAAudioSquareControl control;
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};
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struct GBAAudioChannel2 {
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union GBAAudioWave wave;
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union GBAAudioSquareControl control;
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};
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struct GBAAudioChannel3 {
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union {
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struct {
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unsigned : 5;
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unsigned size : 1;
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unsigned bank : 1;
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unsigned disable : 1;
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unsigned : 7;
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};
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uint16_t packed;
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} bank;
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union {
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struct {
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unsigned length : 8;
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unsigned : 5;
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unsigned volume : 3;
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unsigned disable : 1;
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unsigned : 7;
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};
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uint16_t packed;
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} wave;
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union {
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struct {
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unsigned rate : 11;
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unsigned : 3;
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unsigned stop : 1;
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unsigned restart : 1;
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};
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uint16_t packed;
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} control;
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};
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struct GBAAudioChannel4 {
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union GBAAudioWave wave;
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union {
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struct {
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unsigned ratio : 3;
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unsigned power : 1;
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unsigned frequency : 4;
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unsigned : 6;
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unsigned stop : 1;
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unsigned restart : 1;
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};
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uint16_t packed;
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} control;
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};
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struct GBAAudioFIFO {
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};
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struct GBAAudio {
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struct GBA* p;
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struct GBAAudioChannel1 ch1;
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struct GBAAudioChannel2 ch2;
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struct GBAAudioChannel3 ch3;
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struct GBAAudioChannel4 ch4;
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struct GBAAudioFIFO chA;
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struct GBAAudioFIFO chB;
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};
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void GBAAudioInit(struct GBAAudio* audio);
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void GBAAudioDeinit(struct GBAAudio* audio);
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void GBAAudioWriteSOUND1CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND1CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND1CNT_X(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND2CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND2CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND3CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND3CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND3CNT_X(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND4CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND4CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDCNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDCNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDCNT_X(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteWaveRAM(struct GBAAudio* audio, int address, uint32_t value);
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void GBAAudioWriteFIFO(struct GBAAudio* audio, int address, uint32_t value);
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#endif
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@ -17,6 +17,65 @@ void GBAIOWrite(struct GBA* gba, uint32_t address, uint16_t value) {
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GBAVideoWriteDISPSTAT(&gba->video, value);
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break;
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// Audio
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case REG_SOUND1CNT_LO:
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GBAAudioWriteSOUND1CNT_LO(&gba->audio, value);
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break;
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case REG_SOUND1CNT_HI:
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GBAAudioWriteSOUND1CNT_HI(&gba->audio, value);
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break;
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case REG_SOUND1CNT_X:
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GBAAudioWriteSOUND1CNT_X(&gba->audio, value);
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break;
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case REG_SOUND2CNT_LO:
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GBAAudioWriteSOUND2CNT_LO(&gba->audio, value);
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break;
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case REG_SOUND2CNT_HI:
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GBAAudioWriteSOUND2CNT_HI(&gba->audio, value);
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break;
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case REG_SOUND3CNT_LO:
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GBAAudioWriteSOUND3CNT_LO(&gba->audio, value);
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break;
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case REG_SOUND3CNT_HI:
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GBAAudioWriteSOUND3CNT_HI(&gba->audio, value);
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break;
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case REG_SOUND3CNT_X:
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GBAAudioWriteSOUND3CNT_X(&gba->audio, value);
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break;
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case REG_SOUND4CNT_LO:
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GBAAudioWriteSOUND4CNT_LO(&gba->audio, value);
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break;
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case REG_SOUND4CNT_HI:
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GBAAudioWriteSOUND4CNT_HI(&gba->audio, value);
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break;
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case REG_SOUNDCNT_LO:
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GBAAudioWriteSOUNDCNT_LO(&gba->audio, value);
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break;
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case REG_SOUNDCNT_HI:
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GBAAudioWriteSOUNDCNT_HI(&gba->audio, value);
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break;
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case REG_SOUNDCNT_X:
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GBAAudioWriteSOUNDCNT_X(&gba->audio, value);
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break;
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case REG_WAVE_RAM0_LO:
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case REG_WAVE_RAM1_LO:
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case REG_WAVE_RAM2_LO:
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case REG_WAVE_RAM3_LO:
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case REG_FIFO_A_LO:
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case REG_FIFO_B_LO:
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GBAIOWrite32(gba, address, (gba->memory.io[(address >> 1) + 1] << 16) | value);
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break;
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case REG_WAVE_RAM0_HI:
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case REG_WAVE_RAM1_HI:
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case REG_WAVE_RAM2_HI:
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case REG_WAVE_RAM3_HI:
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case REG_FIFO_A_HI:
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case REG_FIFO_B_HI:
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GBAIOWrite32(gba, address - 2, gba->memory.io[(address >> 1) - 1] | (value << 16));
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break;
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// DMA
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case REG_DMA0SAD_LO:
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case REG_DMA0DAD_LO:
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@ -137,6 +196,24 @@ void GBAIOWrite8(struct GBA* gba, uint32_t address, uint8_t value) {
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void GBAIOWrite32(struct GBA* gba, uint32_t address, uint32_t value) {
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switch (address) {
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case REG_WAVE_RAM0_LO:
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GBAAudioWriteWaveRAM(&gba->audio, 0, value);
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break;
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case REG_WAVE_RAM1_LO:
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GBAAudioWriteWaveRAM(&gba->audio, 1, value);
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break;
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case REG_WAVE_RAM2_LO:
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GBAAudioWriteWaveRAM(&gba->audio, 2, value);
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break;
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case REG_WAVE_RAM3_LO:
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GBAAudioWriteWaveRAM(&gba->audio, 3, value);
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break;
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case REG_FIFO_A_LO:
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GBAAudioWriteFIFO(&gba->audio, 0, value);
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break;
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case REG_FIFO_B_LO:
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GBAAudioWriteFIFO(&gba->audio, 1, value);
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break;
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case REG_DMA0SAD_LO:
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GBAMemoryWriteDMASAD(&gba->memory, 0, value);
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break;
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@ -40,6 +40,9 @@ void GBAInit(struct GBA* gba) {
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gba->video.p = gba;
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GBAVideoInit(&gba->video);
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gba->audio.p = gba;
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GBAAudioInit(&gba->audio);
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GBAIOInit(gba);
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memset(gba->timers, 0, sizeof(gba->timers));
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@ -5,6 +5,7 @@
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#include "gba-memory.h"
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#include "gba-video.h"
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#include "gba-audio.h"
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enum GBAIRQ {
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IRQ_VBLANK = 0x0,
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@ -61,6 +62,7 @@ struct GBA {
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struct GBABoard board;
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struct GBAMemory memory;
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struct GBAVideo video;
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struct GBAAudio audio;
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struct ARMDebugger* debugger;
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