61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#include "emulation.h"
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#include <stdlib.h>
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static int onFrame(VB *sim) {
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SimContext *ctx = vbGetUserData(sim);
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ctx->hasFrame = true;
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return 1;
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}
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int emuInit(EmulationContext *emu) {
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emu->sim = malloc(vbSizeOf());
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vbInit(emu->sim);
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emu->ctx = malloc(sizeof(SimContext));
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vbSetUserData(emu->sim, emu->ctx);
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vbSetFrameCallback(emu->sim, &onFrame);
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return 0;
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}
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void emuDestroy(EmulationContext *emu) {
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uint8_t *rom = vbGetCartROM(emu->sim, NULL);
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SimContext *ctx = vbGetUserData(emu->sim);
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if (rom) free(rom);
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if (ctx) free(ctx);
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free(emu->sim);
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}
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void emuLoadGame(EmulationContext *emu, uint8_t *rom, uint32_t romSize) {
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vbSetCartROM(emu->sim, rom, romSize);
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}
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#define MAX_STEP_CLOCKS 20000000
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void emuTick(EmulationContext *emu) {
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uint32_t clocks = MAX_STEP_CLOCKS;
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vbEmulate(emu->sim, &clocks);
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}
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bool emuReadPixels(EmulationContext *emu, uint8_t *left, uint8_t *right) {
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if (!emu->ctx->hasFrame) {
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return false;
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}
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emu->ctx->hasFrame = false;
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vbGetPixels(emu->sim, left, 1, 384, right, 1, 384);
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return true;
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}
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void emuReadSamples(EmulationContext *emu, void **data, uint32_t *bytes) {
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uint32_t samplePairs;
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*data = vbGetSamples(emu->sim, NULL, &samplePairs);
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*bytes = samplePairs * 4;
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emu->ctx->currentSample += 1;
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emu->ctx->currentSample %= 2;
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vbSetSamples(emu->sim, emu->ctx->samples[emu->ctx->currentSample], 834);
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}
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void emuSetKeys(EmulationContext *emu, uint16_t keys) {
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vbSetKeys(emu->sim, keys);
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} |