96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
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#include <stdio.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <assert.h>
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#include "get_image_for_rom.h"
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#include "gb.h"
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#define LENGTH 60 * 10
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struct local_data {
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unsigned long frames;
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bool running;
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cancel_callback_t cancel_callback;
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void *callback_data;
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};
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static char *async_input_callback(GB_gameboy_t *gb)
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{
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return NULL;
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}
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static void log_callback(GB_gameboy_t *gb, const char *string, GB_log_attributes attributes)
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{
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}
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static void vblank(GB_gameboy_t *gb)
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{
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struct local_data *local_data = (struct local_data *)gb->user_data;
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if (local_data->cancel_callback(local_data->callback_data)) {
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local_data->running = false;
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return;
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}
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if (local_data->frames == LENGTH) {
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local_data->running = false;
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}
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else if (local_data->frames == LENGTH - 1) {
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gb->disable_rendering = false;
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}
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local_data->frames++;
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}
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static uint32_t rgb_encode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b)
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{
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return (b << 16) | (g << 8) | (r) | 0xFF000000;
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}
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int get_image_for_rom(const char *filename, const char *boot_path, uint32_t *output, uint8_t *cgb_flag,
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cancel_callback_t cancel_callback, void *callback_data)
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{
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GB_gameboy_t gb;
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GB_init_cgb(&gb);
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if (GB_load_boot_rom(&gb, boot_path)) {
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GB_free(&gb);
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return 1;
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}
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GB_set_vblank_callback(&gb, (GB_vblank_callback_t) vblank);
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GB_set_pixels_output(&gb, output);
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GB_set_rgb_encode_callback(&gb, rgb_encode);
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GB_set_async_input_callback(&gb, async_input_callback);
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GB_set_log_callback(&gb, log_callback);
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if (GB_load_rom(&gb, filename)) {
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GB_free(&gb);
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return 1;
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}
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/* Run emulation */
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struct local_data local_data = {0,};
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gb.user_data = &local_data;
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local_data.running = true;
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local_data.frames = 0;
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local_data.cancel_callback = cancel_callback;
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local_data.callback_data = callback_data;
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gb.turbo = gb.turbo_dont_skip = gb.disable_rendering = true;
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while (local_data.running) {
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GB_run(&gb);
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}
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*cgb_flag = gb.rom[0x143] & 0xC0;
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GB_free(&gb);
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/* Report failure if cancelled */
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return local_data.frames != LENGTH + 1;
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}
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