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libretro.cpp
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libretro.cpp
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#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <vector>
#include "SoundRetro.h"
#include "libretro.h"
#include "libretro_core_options.h"
#include "scrc32.h"
#include "../System.h"
#include "../Util.h"
#include "../apu/Blip_Buffer.h"
#include "../apu/Gb_Apu.h"
#include "../apu/Gb_Oscs.h"
#include "../common/Port.h"
#include "../common/ConfigManager.h"
#include "../gba/Cheats.h"
#include "../gba/EEprom.h"
#include "../gba/Flash.h"
#include "../gba/GBAGfx.h"
#include "../gba/Globals.h"
#include "../gba/RTC.h"
#include "../gba/Sound.h"
#include "../gba/bios.h"
#include "../gb/gb.h"
#include "../gb/gbCheats.h"
#include "../gb/gbGlobals.h"
#include "../gb/gbMemory.h"
#include "../gb/gbSGB.h"
#include "../gb/gbSound.h"
#include "../filters/interframe.hpp"
#define FRAMERATE (16777216.0 / 280896.0) // 59.73
#define SAMPLERATE 32768.0
#ifndef VBAM_VERSION
#define VBAM_VERSION "2.1.3"
#endif
static retro_log_printf_t log_cb;
static retro_video_refresh_t video_cb;
static retro_input_poll_t poll_cb;
static retro_input_state_t input_cb;
static retro_environment_t environ_cb;
static retro_set_rumble_state_t rumble_cb;
static retro_audio_sample_t audio_cb;
retro_audio_sample_batch_t audio_batch_cb;
static char retro_system_directory[2048];
static char biosfile[4096];
static bool can_dupe = false;
// core options
static bool option_sndInterpolation = true;
static bool option_useBios = false;
static bool option_colorizerHack = false;
static bool option_forceRTCenable = false;
static double option_sndFiltering = 0.5;
static unsigned option_gbPalette = 0;
static bool option_lcdfilter = false;
// filters
static IFBFilterFunc ifb_filter_func = NULL;
static unsigned retropad_device[4] = {0};
static unsigned systemWidth = gbaWidth;
static unsigned systemHeight = gbaHeight;
static EmulatedSystem* core = NULL;
static IMAGE_TYPE type = IMAGE_UNKNOWN;
static bool libretro_supports_bitmasks = false;
// global vars
uint16_t systemColorMap16[0x10000];
uint32_t systemColorMap32[0x10000];
int RGB_LOW_BITS_MASK = 0x821; // used for 16bit inter-frame filters
int systemRedShift = 0;
int systemBlueShift = 0;
int systemGreenShift = 0;
int systemColorDepth = 32;
int systemVerbose = 0;
int systemFrameSkip = 0;
int systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
int emulating = 0;
#ifdef BKPT_SUPPORT
void (*dbgOutput)(const char* s, uint32_t addr);
void (*dbgSignal)(int sig, int number);
#endif
#define GS555(x) (x | (x << 5) | (x << 10))
uint16_t systemGbPalette[24] = {
GS555(0x1f), GS555(0x15), GS555(0x0c), 0,
GS555(0x1f), GS555(0x15), GS555(0x0c), 0,
GS555(0x1f), GS555(0x15), GS555(0x0c), 0,
GS555(0x1f), GS555(0x15), GS555(0x0c), 0,
GS555(0x1f), GS555(0x15), GS555(0x0c), 0,
GS555(0x1f), GS555(0x15), GS555(0x0c), 0
};
struct palettes_t {
char name[40];
uint16_t data[8];
};
static struct palettes_t defaultGBPalettes[] = {
{
"Standard",
{ 0x7FFF, 0x56B5, 0x318C, 0x0000, 0x7FFF, 0x56B5, 0x318C, 0x0000 },
},
{
"Blue Sea",
{ 0x6200, 0x7E10, 0x7C10, 0x5000, 0x6200, 0x7E10, 0x7C10, 0x5000 },
},
{
"Dark Night",
{ 0x4008, 0x4000, 0x2000, 0x2008, 0x4008, 0x4000, 0x2000, 0x2008 },
},
{
"Green Forest",
{ 0x43F0, 0x03E0, 0x4200, 0x2200, 0x43F0, 0x03E0, 0x4200, 0x2200 },
},
{
"Hot Desert",
{ 0x43FF, 0x03FF, 0x221F, 0x021F, 0x43FF, 0x03FF, 0x221F, 0x021F },
},
{
"Pink Dreams",
{ 0x621F, 0x7E1F, 0x7C1F, 0x2010, 0x621F, 0x7E1F, 0x7C1F, 0x2010 },
},
{
"Weird Colors",
{ 0x621F, 0x401F, 0x001F, 0x2010, 0x621F, 0x401F, 0x001F, 0x2010 },
},
{
"Real GB Colors",
{ 0x1B8E, 0x02C0, 0x0DA0, 0x1140, 0x1B8E, 0x02C0, 0x0DA0, 0x1140 },
},
{
"Real GB on GBASP Colors",
{ 0x7BDE, 0x5778, 0x5640, 0x0000, 0x7BDE, 0x529C, 0x2990, 0x0000 },
}
};
static void set_gbPalette(void)
{
if (type != IMAGE_GB)
return;
if (gbCgbMode || gbSgbMode)
return;
const uint16_t *pal = defaultGBPalettes[option_gbPalette].data;
for (int i = 0; i < 8; i++) {
uint16_t val = pal[i];
gbPalette[i] = val;
}
}
static void* gb_rtcdata_prt(void)
{
switch (gbRomType) {
case 0x0f:
case 0x10: // MBC3 + extended
return &gbDataMBC3.mapperSeconds;
case 0xfd: // TAMA5 + extended
return &gbDataTAMA5.mapperSeconds;
case 0xfe: // HuC3 + Clock
return &gbRTCHuC3.mapperLastTime;
}
return NULL;
}
static size_t gb_rtcdata_size(void)
{
switch (gbRomType) {
case 0x0f:
case 0x10: // MBC3 + extended
return MBC3_RTC_DATA_SIZE;
case 0xfd: // TAMA5 + extended
return TAMA5_RTC_DATA_SIZE;
case 0xfe: // HuC3 + Clock
return sizeof(gbRTCHuC3.mapperLastTime);
}
return 0;
}
static void gbInitRTC(void)
{
struct tm* lt;
time_t rawtime;
time(&rawtime);
lt = localtime(&rawtime);
switch (gbRomType) {
case 0x0f:
case 0x10:
gbDataMBC3.mapperSeconds = lt->tm_sec;
gbDataMBC3.mapperMinutes = lt->tm_min;
gbDataMBC3.mapperHours = lt->tm_hour;
gbDataMBC3.mapperDays = lt->tm_yday & 255;
gbDataMBC3.mapperControl = (gbDataMBC3.mapperControl & 0xfe) | (lt->tm_yday > 255 ? 1 : 0);
gbDataMBC3.mapperLastTime = rawtime;
break;
case 0xfd: {
uint8_t gbDaysinMonth[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
int days = lt->tm_yday + 365 * 3;
gbDataTAMA5.mapperSeconds = lt->tm_sec;
gbDataTAMA5.mapperMinutes = lt->tm_min;
gbDataTAMA5.mapperHours = lt->tm_hour;
gbDataTAMA5.mapperDays = 1;
gbDataTAMA5.mapperMonths = 1;
gbDataTAMA5.mapperYears = 1970;
gbDataTAMA5.mapperLastTime = rawtime;
while (days) {
gbDataTAMA5.mapperDays++;
days--;
if (gbDataTAMA5.mapperDays > gbDaysinMonth[gbDataTAMA5.mapperMonths - 1]) {
gbDataTAMA5.mapperDays = 1;
gbDataTAMA5.mapperMonths++;
if (gbDataTAMA5.mapperMonths > 12) {
gbDataTAMA5.mapperMonths = 1;
gbDataTAMA5.mapperYears++;
if ((gbDataTAMA5.mapperYears & 3) == 0)
gbDaysinMonth[1] = 29;
else
gbDaysinMonth[1] = 28;
}
}
}
gbDataTAMA5.mapperControl = (gbDataTAMA5.mapperControl & 0xfe) | (lt->tm_yday > 255 ? 1 : 0);
}
break;
case 0xfe:
gbRTCHuC3.mapperLastTime = rawtime;
break;
}
}
static void SetGBBorder(unsigned val)
{
struct retro_system_av_info avinfo;
unsigned _changed = 0;
switch (val) {
case 0:
_changed = ((systemWidth != gbWidth) || (systemHeight != gbHeight)) ? 1 : 0;
systemWidth = gbBorderLineSkip = gbWidth;
systemHeight = gbHeight;
gbBorderColumnSkip = gbBorderRowSkip = 0;
break;
case 1:
_changed = ((systemWidth != sgbWidth) || (systemHeight != sgbHeight)) ? 1 : 0;
systemWidth = gbBorderLineSkip = sgbWidth;
systemHeight = sgbHeight;
gbBorderColumnSkip = (sgbWidth - gbWidth) >> 1;
gbBorderRowSkip = (sgbHeight - gbHeight) >> 1;
break;
}
retro_get_system_av_info(&avinfo);
if (!_changed)
environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &avinfo);
else
environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &avinfo);
}
void* retro_get_memory_data(unsigned id)
{
void *data = NULL;
switch (type) {
case IMAGE_GBA:
switch (id) {
case RETRO_MEMORY_SAVE_RAM:
if ((saveType == GBA_SAVE_EEPROM) | (saveType == GBA_SAVE_EEPROM_SENSOR))
data = eepromData;
else if ((saveType == GBA_SAVE_SRAM) | (saveType == GBA_SAVE_FLASH))
data = flashSaveMemory;
break;
case RETRO_MEMORY_SYSTEM_RAM:
data = workRAM;
break;
case RETRO_MEMORY_VIDEO_RAM:
data = vram;
break;
}
break;
case IMAGE_GB:
switch (id) {
case RETRO_MEMORY_SAVE_RAM:
if (gbBattery)
data = gbRam;
break;
case RETRO_MEMORY_SYSTEM_RAM:
data = (gbCgbMode ? gbWram : (gbMemory + 0xC000));
break;
case RETRO_MEMORY_VIDEO_RAM:
data = (gbCgbMode ? gbVram : (gbMemory + 0x8000));
break;
case RETRO_MEMORY_RTC:
if (gbRTCPresent)
data = gb_rtcdata_prt();
break;
}
break;
default: break;
}
return data;
}
size_t retro_get_memory_size(unsigned id)
{
size_t size = 0;
switch (type) {
case IMAGE_GBA:
switch (id) {
case RETRO_MEMORY_SAVE_RAM:
if ((saveType == GBA_SAVE_EEPROM) | (saveType == GBA_SAVE_EEPROM_SENSOR))
size = eepromSize;
else if (saveType == GBA_SAVE_FLASH)
size = flashSize;
else if (saveType == GBA_SAVE_SRAM)
size = SIZE_SRAM;
break;
case RETRO_MEMORY_SYSTEM_RAM:
size = SIZE_WRAM;
break;
case RETRO_MEMORY_VIDEO_RAM:
size = SIZE_VRAM - 0x2000; // usuable vram is only 0x18000
break;
}
break;
case IMAGE_GB:
switch (id) {
case RETRO_MEMORY_SAVE_RAM:
if (gbBattery)
size = gbRamSize;
break;
case RETRO_MEMORY_SYSTEM_RAM:
size = gbCgbMode ? 0x8000 : 0x2000;
break;
case RETRO_MEMORY_VIDEO_RAM:
size = gbCgbMode ? 0x4000 : 0x2000;
break;
case RETRO_MEMORY_RTC:
if (gbRTCPresent)
size = gb_rtcdata_size();
break;
}
break;
default: break;
}
return size;
}
unsigned retro_api_version(void)
{
return RETRO_API_VERSION;
}
void retro_set_video_refresh(retro_video_refresh_t cb)
{
video_cb = cb;
}
void retro_set_audio_sample(retro_audio_sample_t cb)
{
audio_cb = cb;
}
void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb)
{
audio_batch_cb = cb;
}
void retro_set_input_poll(retro_input_poll_t cb)
{
poll_cb = cb;
}
void retro_set_input_state(retro_input_state_t cb)
{
input_cb = cb;
}
static void update_input_descriptors(void);
static struct retro_input_descriptor input_gba[] = {
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad 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_L, "L" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "R" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Turbo B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Turbo A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2, "Solar Sensor (Darker)" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2, "Solar Sensor (Lighter)" },
{ 0, 0, 0, 0, NULL },
};
static struct retro_input_descriptor input_gb[] = {
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Turbo B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Turbo A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 0, 0, 0, 0, NULL },
};
static struct retro_input_descriptor input_sgb[] = {
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Turbo B" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Turbo A" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "B" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "A" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Turbo B" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Turbo A" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "B" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "A" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Turbo B" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Turbo A" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "B" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "A" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Turbo B" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Turbo A" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 0, 0, 0, 0, NULL },
};
static const struct retro_controller_description port_gba[] = {
{ "GBA Joypad", RETRO_DEVICE_JOYPAD },
{ NULL, 0 },
};
static const struct retro_controller_description port_gb[] = {
{ "GB Joypad", RETRO_DEVICE_JOYPAD },
{ NULL, 0 },
};
static const struct retro_controller_info ports_gba[] = {
{ port_gba, 1},
{ NULL, 0 }
};
static const struct retro_controller_info ports_gb[] = {
{ port_gb, 1},
{ NULL, 0 }
};
static const struct retro_controller_info ports_sgb[] = {
{ port_gb, 1},
{ port_gb, 1},
{ port_gb, 1},
{ port_gb, 1},
{ NULL, 0 }
};
void retro_set_controller_port_device(unsigned port, unsigned device)
{
if (port > 3) return;
retropad_device[port] = device;
log_cb(RETRO_LOG_INFO, "Controller %d device: %d\n", port + 1, device);
}
void retro_set_environment(retro_environment_t cb)
{
environ_cb = cb;
bool categoriesSupported;
libretro_set_core_options(environ_cb, &categoriesSupported);
}
void retro_get_system_info(struct retro_system_info *info)
{
info->need_fullpath = false;
info->valid_extensions = "dmg|gb|gbc|cgb|sgb|gba";
#ifdef GIT_COMMIT
info->library_version = VBAM_VERSION " " GIT_COMMIT;
#else
info->library_version = VBAM_VERSION;
#endif
info->library_name = "VBA-M";
info->block_extract = false;
}
void retro_get_system_av_info(struct retro_system_av_info *info)
{
double aspect = (3.0f / 2.0f);
unsigned maxWidth = gbaWidth;
unsigned maxHeight = gbaHeight;
if (type == IMAGE_GB) {
aspect = !gbBorderOn ? (10.0 / 9.0) : (8.0 / 7.0);
maxWidth = !gbBorderOn ? gbWidth : sgbWidth;
maxHeight = !gbBorderOn ? gbHeight : sgbHeight;
}
info->geometry.base_width = systemWidth;
info->geometry.base_height = systemHeight;
info->geometry.max_width = maxWidth;
info->geometry.max_height = maxHeight;
info->geometry.aspect_ratio = aspect;
info->timing.fps = FRAMERATE;
info->timing.sample_rate = SAMPLERATE;
}
void retro_init(void)
{
struct retro_log_callback log;
struct retro_rumble_interface rumble;
environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &can_dupe);
if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
log_cb = log.log;
else
log_cb = NULL;
const char* dir = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
snprintf(retro_system_directory, sizeof(retro_system_directory), "%s", dir);
#ifdef FRONTEND_SUPPORTS_RGB565
systemColorDepth = 16;
systemRedShift = 11;
systemGreenShift = 6;
systemBlueShift = 0;
enum retro_pixel_format rgb565 = RETRO_PIXEL_FORMAT_RGB565;
if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &rgb565) && log_cb)
log_cb(RETRO_LOG_INFO, "Frontend supports RGB565 - will use that instead of XRGB1555.\n");
#else
systemColorDepth = 32;
systemRedShift = 19;
systemGreenShift = 11;
systemBlueShift = 3;
enum retro_pixel_format rgb8888 = RETRO_PIXEL_FORMAT_XRGB8888;
if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &rgb8888) && log_cb)
log_cb(RETRO_LOG_INFO, "Frontend supports XRGB8888 - will use that instead of XRGB1555.\n");
#endif
bool yes = true;
environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &yes);
if (environ_cb(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &rumble))
rumble_cb = rumble.set_rumble_state;
else
rumble_cb = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL))
{
libretro_supports_bitmasks = true;
log_cb(RETRO_LOG_INFO, "SET_SUPPORT_INPUT_BITMASK: yes\n");
}
}
static const char *gbGetCartridgeType(void)
{
const char *type = "Unknown";
switch (gbRom[0x147]) {
case 0x00:
type = "ROM";
break;
case 0x01:
type = "ROM+MBC1";
break;
case 0x02:
type = "ROM+MBC1+RAM";
break;
case 0x03:
type = "ROM+MBC1+RAM+BATTERY";
break;
case 0x05:
type = "ROM+MBC2";
break;
case 0x06:
type = "ROM+MBC2+BATTERY";
break;
case 0x0b:
type = "ROM+MMM01";
break;
case 0x0c:
type = "ROM+MMM01+RAM";
break;
case 0x0d:
type = "ROM+MMM01+RAM+BATTERY";
break;
case 0x0f:
type = "ROM+MBC3+TIMER+BATTERY";
break;
case 0x10:
type = "ROM+MBC3+TIMER+RAM+BATTERY";
break;
case 0x11:
type = "ROM+MBC3";
break;
case 0x12:
type = "ROM+MBC3+RAM";
break;
case 0x13:
type = "ROM+MBC3+RAM+BATTERY";
break;
case 0x19:
type = "ROM+MBC5";
break;
case 0x1a:
type = "ROM+MBC5+RAM";
break;
case 0x1b:
type = "ROM+MBC5+RAM+BATTERY";
break;
case 0x1c:
type = "ROM+MBC5+RUMBLE";
break;
case 0x1d:
type = "ROM+MBC5+RUMBLE+RAM";
break;
case 0x1e:
type = "ROM+MBC5+RUMBLE+RAM+BATTERY";
break;
case 0x22:
type = "ROM+MBC7+BATTERY";
break;
case 0x55:
type = "GameGenie";
break;
case 0x56:
type = "GameShark V3.0";
break;
case 0xfc:
type = "ROM+POCKET CAMERA";
break;
case 0xfd:
type = "ROM+BANDAI TAMA5";
break;
case 0xfe:
type = "ROM+HuC-3";
break;
case 0xff:
type = "ROM+HuC-1";
break;
}
return (type);
}
static const char *gbGetSaveRamSize(void)
{
const char *type = "Unknown";
switch (gbRom[0x149]) {
case 0:
type = "None";
break;
case 1:
type = "2K";
break;
case 2:
type = "8K";
break;
case 3:
type = "32K";
break;
case 4:
type = "128K";
break;
case 5:
type = "64K";
break;
}
return (type);
}
typedef struct {
char romtitle[256];
char romid[5];
int saveSize; // also can override eeprom size
int saveType; // 0auto 1eeprom 2sram 3flash 4sensor+eeprom 5none
int rtcEnabled;
int mirroringEnabled;
int useBios;
} ini_t;
static const ini_t gbaover[512] = {
#include "gba-over.inc"
};
static int romSize = 0;
static void load_image_preferences(void)
{
const char *savetype[] = {
"AUTO",
"EEPROM",
"SRAM",
"FLASH",
"SENSOR + EEPROM",
"NONE"
};
bool found = false;
bool hasRumble = false;
char buffer[12 + 1];
unsigned i = 0, found_no = 0;
unsigned long romCrc32 = crc32(0, rom, romSize);
cpuSaveType = GBA_SAVE_AUTO;
flashSize = SIZE_FLASH512;
eepromSize = SIZE_EEPROM_512;
rtcEnabled = false;
mirroringEnable = false;
log("File CRC32 : 0x%08X\n", romCrc32);
buffer[0] = 0;
for (i = 0; i < 12; i++) {
if (rom[0xa0 + i] == 0)
break;
buffer[i] = rom[0xa0 + i];
}
buffer[i] = 0;
log("Game Title : %s\n", buffer);
buffer[0] = rom[0xac];
buffer[1] = rom[0xad];
buffer[2] = rom[0xae];
buffer[3] = rom[0xaf];
buffer[4] = 0;
log("Game Code : %s\n", buffer);
for (i = 0; i < 512; i++) {
if (!strcmp(gbaover[i].romid, buffer)) {
found = true;
found_no = i;
break;
}
}
if (found) {
log("Name : %s\n", gbaover[found_no].romtitle);
rtcEnabled = gbaover[found_no].rtcEnabled;
cpuSaveType = gbaover[found_no].saveType;
unsigned size = gbaover[found_no].saveSize;
if (cpuSaveType == GBA_SAVE_SRAM)
flashSize = SIZE_SRAM;
else if (cpuSaveType == GBA_SAVE_FLASH)
flashSize = (size == SIZE_FLASH1M) ? SIZE_FLASH1M : SIZE_FLASH512;
else if ((cpuSaveType == GBA_SAVE_EEPROM) || (cpuSaveType == GBA_SAVE_EEPROM_SENSOR))
eepromSize = (size == SIZE_EEPROM_8K) ? SIZE_EEPROM_8K : SIZE_EEPROM_512;
}
// gameID that starts with 'F' are classic/famicom games
mirroringEnable = (buffer[0] == 'F') ? true : false;
if (!cpuSaveType)
utilGBAFindSave(romSize);
saveType = cpuSaveType;
if (flashSize == SIZE_FLASH512 || flashSize == SIZE_FLASH1M)
flashSetSize(flashSize);
if (option_forceRTCenable)
rtcEnabled = true;
rtcEnable(rtcEnabled);
// game code starting with 'R' or 'V' has rumble support
if ((buffer[0] == 'R') || (buffer[0] == 'V'))
hasRumble = true;
rtcEnableRumble(!rtcEnabled && hasRumble);
doMirroring(mirroringEnable);
log("romSize : %dKB\n", (romSize + 1023) / 1024);
log("has RTC : %s.\n", rtcEnabled ? "Yes" : "No");
log("cpuSaveType : %s.\n", savetype[cpuSaveType]);
if (cpuSaveType == 3)
log("flashSize : %d.\n", flashSize);
else if (cpuSaveType == 1)
log("eepromSize : %d.\n", eepromSize);
log("mirroringEnable : %s.\n", mirroringEnable ? "Yes" : "No");
}
#ifdef _WIN32
static const char SLASH = '\\';
#else
static const char SLASH = '/';
#endif
static void gba_init(void)
{
log("Loading VBA-M Core (GBA)...\n");
load_image_preferences();
soundSetSampleRate(SAMPLERATE);
if (option_useBios) {
snprintf(biosfile, sizeof(biosfile), "%s%c%s", retro_system_directory, SLASH, "gba_bios.bin");
log("Loading bios: %s\n", biosfile);
}
CPUInit(biosfile, option_useBios);
systemWidth = gbaWidth;
systemHeight = gbaHeight;
CPUReset();
}
static void gb_init(void)
{
const char *biosname[] = {"gb_bios.bin", "gbc_bios.bin"};
log("Loading VBA-M Core (GB/GBC)...\n");
gbGetHardwareType();
setColorizerHack(option_colorizerHack);
// Disable bios loading when using Colorizer hack
if (option_colorizerHack)
option_useBios = false;
if (option_useBios) {
snprintf(biosfile, sizeof(biosfile), "%s%c%s",
retro_system_directory, SLASH, biosname[gbCgbMode]);
log("Loading bios: %s\n", biosfile);
}
gbCPUInit(biosfile, option_useBios);
if (gbBorderOn) {
systemWidth = gbBorderLineSkip = sgbWidth;
systemHeight = sgbHeight;
gbBorderColumnSkip = (sgbWidth - gbWidth) >> 1;
gbBorderRowSkip = (sgbHeight - gbHeight) >> 1;
} else {
systemWidth = gbBorderLineSkip = gbWidth;
systemHeight = gbHeight;
gbBorderColumnSkip = gbBorderRowSkip = 0;
}
gbSoundSetSampleRate(SAMPLERATE);
gbSoundSetDeclicking(1);
gbReset(); // also resets sound;
set_gbPalette();
log("Rom size : %02x (%dK)\n", gbRom[0x148], (romSize + 1023) / 1024);
log("Cartridge type : %02x (%s)\n", gbRom[0x147], gbGetCartridgeType());
log("Ram size : %02x (%s)\n", gbRom[0x149], gbGetSaveRamSize());
int i = 0;
uint8_t crc = 25;
for (i = 0x134; i < 0x14d; i++)
crc += gbRom[i];
crc = 256 - crc;
log("CRC : %02x (%02x)\n", crc, gbRom[0x14d]);
uint16_t crc16 = 0;
for (i = 0; i < gbRomSize; i++)
crc16 += gbRom[i];
crc16 -= gbRom[0x14e] + gbRom[0x14f];
log("Checksum : %04x (%04x)\n", crc16, gbRom[0x14e] * 256 + gbRom[0x14f]);
if (gbBattery)
log("Game supports battery save ram.\n");
if (gbRom[0x143] == 0xc0)
log("Game works on CGB only\n");
else if (gbRom[0x143] == 0x80)
log("Game supports GBC functions, GB compatible.\n");
if (gbRom[0x146] == 0x03)
log("Game supports SGB functions\n");
}
void retro_deinit(void)
{
emulating = 0;
core->emuCleanUp();
soundShutdown();
libretro_supports_bitmasks = false;
}
void retro_reset(void)
{
core->emuReset();
set_gbPalette();
}
#define MAX_PLAYERS 4
#define MAX_BUTTONS 10
#define TURBO_BUTTONS 2
static bool option_turboEnable = false;
static unsigned option_turboDelay = 3;
static unsigned turbo_delay_counter[MAX_PLAYERS][TURBO_BUTTONS] = {{0}, {0}};
static const unsigned binds[MAX_BUTTONS] = {
RETRO_DEVICE_ID_JOYPAD_A,
RETRO_DEVICE_ID_JOYPAD_B,
RETRO_DEVICE_ID_JOYPAD_SELECT,
RETRO_DEVICE_ID_JOYPAD_START,
RETRO_DEVICE_ID_JOYPAD_RIGHT,
RETRO_DEVICE_ID_JOYPAD_LEFT,
RETRO_DEVICE_ID_JOYPAD_UP,
RETRO_DEVICE_ID_JOYPAD_DOWN,
RETRO_DEVICE_ID_JOYPAD_R,
RETRO_DEVICE_ID_JOYPAD_L
};
static const unsigned turbo_binds[TURBO_BUTTONS] = {
RETRO_DEVICE_ID_JOYPAD_X,
RETRO_DEVICE_ID_JOYPAD_Y
};
static void systemUpdateSolarSensor(int level);
static uint8_t sensorDarkness = 0xE8;
static uint8_t sensorDarknessLevel = 0; // so we can adjust sensor from gamepad
static int option_analogDeadzone;
static int option_gyroSensitivity, option_tiltSensitivity;
static bool option_swapAnalogSticks;
static void update_variables(bool startup)
{
struct retro_variable var = { NULL, NULL };
char key[256] = {0};
int disabled_layers = 0;
int sound_enabled = 0x30F;
bool sound_changed = false;
var.key = key;
strcpy(key, "vbam_layer_x");
for (int i = 0; i < 8; i++) {
key[strlen("vbam_layer_")] = '1' + i;
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && var.value[0] == 'd')
disabled_layers |= 0x100 << i;
}
layerSettings = 0xFF00 ^ disabled_layers;
layerEnable = DISPCNT & layerSettings;
CPUUpdateRenderBuffers(false);
strcpy(key, "vbam_sound_x");
for (unsigned i = 0; i < 6; i++) {
key[strlen("vbam_sound_")] = '1' + i;
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && var.value[0] == 'd') {
int which = (i < 4) ? (1 << i) : (0x100 << (i - 4));
sound_enabled &= ~(which);