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Added model selection to libretro, including GBA. Closes #23.

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This commit is contained in:
Lior Halphon 2018-01-20 00:06:33 +02:00
parent 09dd47c6de
commit af143b0420
2 changed files with 125 additions and 153 deletions
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1
libretro/Makefile.common
View File

@ -11,6 +11,7 @@ SOURCES_C := $(CORE_DIR)/Core/gb.c \
$(CORE_DIR)/Core/z80_cpu.c \
$(CORE_DIR)/Core/joypad.c \
$(CORE_DIR)/Core/save_state.c \
$(CORE_DIR)/libretro/agb_boot.c \
$(CORE_DIR)/libretro/cgb_boot.c \
$(CORE_DIR)/libretro/dmg_boot.c \
$(CORE_DIR)/libretro/libretro.c

271
libretro/libretro.c
View File

@ -19,9 +19,9 @@
#include "libretro.h"
#ifdef _WIN32
char slash = '\\';
static const char slash = '\\';
#else
char slash = '/';
static const char slash = '/';
#endif
#define VIDEO_WIDTH 160
@ -31,6 +31,14 @@ char slash = '/';
char battery_save_path[512];
char symbols_path[512];
enum model {
MODEL_DMG,
MODEL_CGB,
MODEL_AGB
};
static enum model model = MODEL_CGB;
static uint32_t *frame_buf;
static struct retro_log_callback logging;
static retro_log_printf_t log_cb;
@ -48,8 +56,8 @@ char retro_game_path[4096];
int RLOOP=1;
GB_gameboy_t gb;
extern const unsigned char dmg_boot[], cgb_boot[];
extern const unsigned dmg_boot_length, cgb_boot_length;
extern const unsigned char dmg_boot[], cgb_boot[], agb_boot[];
extern const unsigned dmg_boot_length, cgb_boot_length, agb_boot_length;
static void fallback_log(enum retro_log_level level, const char *fmt, ...)
{
@ -60,24 +68,6 @@ static void fallback_log(enum retro_log_level level, const char *fmt, ...)
va_end(va);
}
static void replace_extension(const char *src, size_t length, char *dest, const char *ext)
{
memcpy(dest, src, length);
dest[length] = 0;
/* Remove extension */
for (size_t i = length; i--;) {
if (dest[i] == '/') break;
if (dest[i] == '.') {
dest[i] = 0;
break;
}
}
/* Add new extension */
strcat(dest, ext);
}
static struct retro_rumble_interface rumble;
static void GB_update_keys_status(GB_gameboy_t *gb)
@ -130,16 +120,6 @@ static uint32_t rgb_encode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b)
return r<<16|g<<8|b;
}
#ifndef DISABLE_DEBUGGER
static void debugger_interrupt(int ignore)
{
/* ^C twice to exit */
if (GB_debugger_is_stopped(&gb))
exit(0);
GB_debugger_break(&gb);
}
#endif
static retro_environment_t environ_cb;
void retro_init(void)
@ -246,128 +226,35 @@ void retro_reset(void)
GB_reset(&gb);
}
static void check_variables(void)
static void init_for_current_model(void)
{
struct retro_variable var = {0};
var.key = "sameboy_color_correction_mode";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && GB_is_cgb(&gb))
{
if (strcmp(var.value, "off") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_DISABLED);
else if (strcmp(var.value, "correct curves") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_CORRECT_CURVES);
else if (strcmp(var.value, "emulate hardware") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_EMULATE_HARDWARE);
else if (strcmp(var.value, "preserve brightness") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS);
if (GB_is_inited(&gb)) {
GB_switch_model_and_reset(&gb, model != MODEL_DMG);
}
var.key = "sameboy_high_pass_filter_mode";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "off") == 0)
GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_OFF);
else if (strcmp(var.value, "accurate") == 0)
GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_ACCURATE);
else if (strcmp(var.value, "remove dc offset") == 0)
GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_REMOVE_DC_OFFSET);
else {
if (model == MODEL_DMG) {
GB_init(&gb);
}
else {
GB_init_cgb(&gb);
}
}
void retro_run(void)
{
bool updated = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
check_variables();
GB_run_frame(&gb);
video_cb(frame_buf, VIDEO_WIDTH, VIDEO_HEIGHT, VIDEO_WIDTH * sizeof(uint32_t));
}
bool retro_load_game(const struct retro_game_info *info)
{
struct retro_input_descriptor desc[] = {
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 0 },
};
environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_XRGB8888;
if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
{
log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported.\n");
return false;
}
snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path);
const char *model_name = (const char *[]){"dmg", "cgb", "agb"}[model];
const unsigned char *boot_code = (const unsigned char *[]){dmg_boot, cgb_boot, agb_boot}[model];
unsigned boot_length = (unsigned []){dmg_boot_length, cgb_boot_length, agb_boot_length}[model];
char buf[256];
int err = 0;
if (!strstr(info->path, "gbc"))
{
GB_init(&gb);
snprintf(buf, sizeof(buf), "%s%cdmg_boot.bin", retro_system_directory, slash);
snprintf(buf, sizeof(buf), "%s%c%s_boot.bin", retro_system_directory, slash, model_name);
log_cb(RETRO_LOG_INFO, "Loading boot image: %s\n", buf);
err = GB_load_boot_rom(&gb, buf);
if (err) {
GB_load_boot_rom_from_buffer(&gb, dmg_boot, dmg_boot_length);
err = 0;
}
}
else
{
GB_init_cgb(&gb);
snprintf(buf, sizeof(buf), "%s%ccgb_boot.bin", retro_system_directory, slash);
log_cb(RETRO_LOG_INFO, "Loading boot image: %s\n", buf);
err = GB_load_boot_rom(&gb, buf);
if (err) {
GB_load_boot_rom_from_buffer(&gb, cgb_boot, cgb_boot_length);
err = 0;
}
}
if (err)
log_cb(RETRO_LOG_INFO, "Failed to load boot ROM %s %d\n", buf, err);
(void)info;
if (GB_load_rom(&gb,info->path)) {
perror("Failed to load ROM");
exit(1);
if (GB_load_boot_rom(&gb, buf)) {
GB_load_boot_rom_from_buffer(&gb, boot_code, boot_length);
}
GB_set_vblank_callback(&gb, (GB_vblank_callback_t) vblank);
GB_set_user_data(&gb, (void*)NULL);
GB_set_pixels_output(&gb,(unsigned int*)frame_buf);
GB_set_rgb_encode_callback(&gb, rgb_encode);
size_t path_length = strlen(retro_game_path);
#ifndef DISABLE_DEBUGGER
{
char TMPC[512];
sprintf(TMPC,"%s/registers.sym",retro_system_directory);
GB_debugger_load_symbol_file(&gb, TMPC);
}
#endif
replace_extension(retro_game_path, path_length, symbols_path, ".sym");
#ifndef DISABLE_DEBUGGER
GB_debugger_load_symbol_file(&gb, symbols_path);
#endif
GB_set_sample_rate(&gb, AUDIO_FREQUENCY);
struct retro_memory_descriptor descs[7];
@ -409,6 +296,97 @@ bool retro_load_game(const struct retro_game_info *info)
mmaps.descriptors = descs;
mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
}
static void check_variables(void)
{
struct retro_variable var = {0};
var.key = "sameboy_color_correction_mode";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && GB_is_cgb(&gb))
{
if (strcmp(var.value, "off") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_DISABLED);
else if (strcmp(var.value, "correct curves") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_CORRECT_CURVES);
else if (strcmp(var.value, "emulate hardware") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_EMULATE_HARDWARE);
else if (strcmp(var.value, "preserve brightness") == 0)
GB_set_color_correction_mode(&gb, GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS);
}
var.key = "sameboy_high_pass_filter_mode";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "off") == 0)
GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_OFF);
else if (strcmp(var.value, "accurate") == 0)
GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_ACCURATE);
else if (strcmp(var.value, "remove dc offset") == 0)
GB_set_highpass_filter_mode(&gb, GB_HIGHPASS_REMOVE_DC_OFFSET);
}
var.key = "sameboy_model";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
enum model new_model = model;
if (strcmp(var.value, "Game Boy") == 0)
new_model = MODEL_DMG;
else if (strcmp(var.value, "Game Boy Color") == 0)
new_model = MODEL_CGB;
else if (strcmp(var.value, "Game Boy Advance") == 0)
new_model = MODEL_AGB;
if (GB_is_inited(&gb) && new_model != model) {
model = new_model;
init_for_current_model();
}
}
}
void retro_run(void)
{
bool updated = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
check_variables();
GB_run_frame(&gb);
video_cb(frame_buf, VIDEO_WIDTH, VIDEO_HEIGHT, VIDEO_WIDTH * sizeof(uint32_t));
}
bool retro_load_game(const struct retro_game_info *info)
{
struct retro_input_descriptor desc[] = {
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 0 },
};
environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_XRGB8888;
if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
{
log_cb(RETRO_LOG_INFO, "XRGB8888 is not supported.\n");
return false;
}
snprintf(retro_game_path, sizeof(retro_game_path), "%s", info->path);
init_for_current_model();
if (GB_load_rom(&gb,info->path)) {
log_cb(RETRO_LOG_INFO, "Failed to load ROM\n");
return false;
}
bool yes = true;
environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &yes);
@ -418,21 +396,14 @@ bool retro_load_game(const struct retro_game_info *info)
else
log_cb(RETRO_LOG_INFO, "Rumble environment not supported.\n");
static struct retro_variable vars_cgb[] = {
static const struct retro_variable vars[] = {
{ "sameboy_color_correction_mode", "Color Correction; off|correct curves|emulate hardware|preserve brightness" },
{ "sameboy_high_pass_filter_mode", "High Pass Filter; off|accurate|remove dc offset" },
{ "sameboy_model", "Emulated Model; Game Boy Color|Game Boy Advance|Game Boy" },
{ NULL }
};
static struct retro_variable vars_dmg[] = {
{ "sameboy_high_pass_filter_mode", "High Pass Filter; off|accurate|remove dc offset" },
{ NULL }
};
if (GB_is_cgb(&gb))
environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, vars_cgb);
else
environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, vars_dmg);
environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
check_variables();
return true;