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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 "../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"
#define RETRO_DEVICE_GBA RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0)
#define RETRO_DEVICE_GBA_ALT1 RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1)
#define RETRO_DEVICE_GBA_ALT2 RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 2)
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;
retro_audio_sample_batch_t audio_batch_cb;
static char retro_system_directory[4096];
static char biosfile[4096];
static float sndFiltering = 0.5f;
static bool sndInterpolation = true;
static bool can_dupe = false;
static bool usebios = false;
static unsigned retropad_layout = 1;
static const double FramesPerSecond = (16777216.0 / 280896.0); // 59.73
static const long SampleRate = 32768;
static const int GBWidth = 160;
static const int GBHeight = 144;
static const int SGBWidth = 256;
static const int SGBHeight = 224;
static const int GBAWidth = 240;
static const int GBAHeight = 160;
static unsigned width = 240;
static unsigned height = 160;
static EmulatedSystem* core = NULL;
static IMAGE_TYPE type = IMAGE_UNKNOWN;
uint16_t systemColorMap16[0x10000];
uint32_t systemColorMap32[0x10000];
int RGB_LOW_BITS_MASK = 0;
int systemRedShift = 0;
int systemBlueShift = 0;
int systemGreenShift = 0;
int systemColorDepth = 32;
int systemDebug = 0;
int systemVerbose = 0;
int systemFrameSkip = 0;
int systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
int systemSpeed = 0;
int emulating = 0;
void (*dbgOutput)(const char* s, uint32_t addr);
void (*dbgSignal)(int sig, int number);
#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
};
extern int gbRomType; // gets type from header 0x147
extern int gbBattery; // enabled when gbRamSize != 0
static bool gb_hasbattery(void)
{
switch (gbRomType) {
case 0x03: // MBC1
case 0xff: // MBC1
case 0x0d: // MM01
case 0x0f:
case 0x10: // MBC3 + extended
case 0x13:
case 0xfc: // MBC3
case 0x1b:
case 0x1e: // MBC5
//incomplete, does not save gbTAMA5ram
case 0xfd: // TAMA5 + extended
case 0x06: // MBC2
case 0x22: // MBC7
return true;
}
return false;
}
static bool gb_hasrtc(void)
{
switch (gbRomType) {
case 0x0f:
case 0x10: // MBC3 + extended
case 0x13:
case 0xfd: // TAMA5 + extended
return true;
}
return false;
}
static void* gba_savedata_ptr(void)
{
if ((saveType == 1) | (saveType == 4))
return eepromData;
if ((saveType == 2) | (saveType == 3))
return flashSaveMemory;
return 0;
}
static size_t gba_savedata_size(void)
{
if ((saveType == 1) | (saveType == 4))
return eepromSize;
if ((saveType == 2) | (saveType == 3))
return flashSize;
return 0;
}
static void* gb_savedata_ptr(void)
{
if (gb_hasbattery())
return gbRam;
return 0;
}
static size_t gb_savedata_size(void)
{
if (gb_hasbattery())
return gbRamSize;
return 0;
}
static void* gb_rtcdata_prt(void)
{
if (gb_hasrtc()) {
switch (gbRomType) {
case 0x0f:
case 0x10: // MBC3 + extended
return &gbDataMBC3.mapperSeconds;
case 0x13:
case 0xfd: // TAMA5 + extended
return &gbDataTAMA5.mapperSeconds;
}
}
return 0;
}
static size_t gb_rtcdata_size(void)
{
if (gb_hasrtc()) {
switch (gbRomType) {
case 0x0f:
case 0x10: // MBC3 + extended
return (10 * sizeof(int) + sizeof(time_t));
break;
case 0x13:
case 0xfd: // TAMA5 + extended
return (14 * sizeof(int) + sizeof(time_t));
break;
}
}
return 0;
}
static void* savedata_ptr(void)
{
if (type == IMAGE_GBA)
return gba_savedata_ptr();
if (type == IMAGE_GB)
return gb_savedata_ptr();
return 0;
}
static size_t savedata_size(void)
{
if (type == IMAGE_GBA)
return gba_savedata_size();
if (type == IMAGE_GB)
return gb_savedata_size();
return 0;
}
static void* rtcdata_ptr(void)
{
if (type == IMAGE_GB)
return gb_rtcdata_prt();
return 0;
}
static size_t rtcdata_size(void)
{
if (type == IMAGE_GB)
return gb_rtcdata_size();
return 0;
}
static void* wram_ptr(void)
{
if (type == IMAGE_GBA)
return workRAM;
if (type == IMAGE_GB)
return gbMemoryMap[0x0c];
return 0;
}
static size_t wram_size(void)
{
if (type == IMAGE_GBA)
return 0x40000;
if (type == IMAGE_GB)
// only use 1st bank of wram, libretro doesnt seem to handle
// the switching bank properly in GBC mode. This is to avoid possible incorrect reads.
// For cheevos purposes, this bank is accessed using retro_memory_descriptor instead.
return gbCgbMode ? 0x1000 : 0x2000;
}
static void* vram_ptr(void)
{
if (type == IMAGE_GBA)
return vram;
if (type == IMAGE_GB)
return gbMemoryMap[0x08] ;
return 0;
}
static size_t vram_size(void)
{
if (type == IMAGE_GBA)
return 0x20000;
if (type == IMAGE_GB)
return 0x2000;;
return 0;
}
static void gbUpdateRTC(void)
{
if (gb_hasbattery()) {
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 };
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;
int days = lt->tm_yday + 365 * 3;
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;
}
}
}
void* retro_get_memory_data(unsigned id)
{
if (id == RETRO_MEMORY_SAVE_RAM)
return savedata_ptr();
//if (id == RETRO_MEMORY_RTC)
//return rtcdata_ptr();
if (id == RETRO_MEMORY_SYSTEM_RAM)
return wram_ptr();
if (id == RETRO_MEMORY_VIDEO_RAM)
return vram_ptr();
return 0;
}
size_t retro_get_memory_size(unsigned id)
{
if (id == RETRO_MEMORY_SAVE_RAM)
return savedata_size();
//if (id == RETRO_MEMORY_RTC)
//return rtcdata_size();
if (id == RETRO_MEMORY_SYSTEM_RAM)
return wram_size();
if (id == RETRO_MEMORY_VIDEO_RAM)
return vram_size();
return 0;
}
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)
{
}
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);
void retro_set_controller_port_device(unsigned port, unsigned device)
{
if (port > 0) return; // GBA Only supports 1 controller
log_cb(RETRO_LOG_INFO, "Controller %d'\n", device);
switch (device) {
case RETRO_DEVICE_JOYPAD:
case RETRO_DEVICE_GBA:
default:
retropad_layout = 1;
break;
case RETRO_DEVICE_GBA_ALT1:
retropad_layout = 2;
break;
case RETRO_DEVICE_GBA_ALT2:
retropad_layout = 3;
break;
case RETRO_DEVICE_NONE:
retropad_layout = 0;
break;
}
update_input_descriptors();
}
void retro_set_environment(retro_environment_t cb)
{
environ_cb = cb;
struct retro_variable variables[] = {
{ "vbam_solarsensor", "Solar Sensor Level; 0|1|2|3|4|5|6|7|8|9|10" },
{ "vbam_usebios", "Use BIOS file (Restart); disabled|enabled" },
{ "vbam_soundinterpolation", "Sound Interpolation; disabled|enabled" },
{ "vbam_soundfiltering", "Sound Filtering; 5|6|7|8|9|10|0|1|2|3|4" },
{ "vbam_gbHardware", "(GB) Emulated Hardware; Automatic|Game Boy Color|Super Game Boy|Game Boy|Game Boy Advance|Super Game Boy 2" },
{ "vbam_showborders", "(GB) Show Borders; disabled|enabled|auto" },
{ "vbam_turboenable", "Enable Turbo Buttons; disabled|enabled" },
{ "vbam_turbodelay", "Turbo Delay (in frames); 3|4|5|6|7|8|9|10|11|12|13|14|15|1|2" },
{ "vbam_layer_1", "Show layer 1; enabled|disabled" },
{ "vbam_layer_2", "Show layer 2; enabled|disabled" },
{ "vbam_layer_3", "Show layer 3; enabled|disabled" },
{ "vbam_layer_4", "Show layer 4; enabled|disabled" },
{ "vbam_layer_5", "Show sprite layer; enabled|disabled" },
{ "vbam_layer_6", "Show window layer 1; enabled|disabled" },
{ "vbam_layer_7", "Show window layer 2; enabled|disabled" },
{ "vbam_layer_8", "Show sprite window layer; enabled|disabled" },
{ "vbam_sound_1", "Sound channel 1; enabled|disabled" },
{ "vbam_sound_2", "Sound channel 2; enabled|disabled" },
{ "vbam_sound_3", "Sound channel 3; enabled|disabled" },
{ "vbam_sound_4", "Sound channel 4; enabled|disabled" },
{ "vbam_sound_5", "Direct Sound A; enabled|disabled" },
{ "vbam_sound_6", "Direct Sound B; enabled|disabled" },
{ NULL, NULL },
};
static const struct retro_controller_description port_1[] = {
{ "GBA Joypad", RETRO_DEVICE_GBA },
{ "Alt Joypad YB", RETRO_DEVICE_GBA_ALT1 },
{ "Alt Joypad AB", RETRO_DEVICE_GBA_ALT2 },
{ NULL, 0 },
};
static const struct retro_controller_info ports[] = {
{port_1, 3},
{ NULL, 0 }
};
cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables);
cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports);
}
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_VERSION
info->library_version = "2.1.0" GIT_VERSION;
#else
info->library_version = "2.1.0-GIT";
#endif
info->library_name = "VBA-M";
info->block_extract = false;
}
void retro_get_system_av_info(struct retro_system_av_info *info)
{
float aspect = (3.0f / 2.0f);
if (type == IMAGE_GB)
aspect = !gbBorderOn ? (10.0 / 9.0) : (8.0 / 7.0);
info->geometry.base_width = width;
info->geometry.base_height = height;
info->geometry.max_width = width;
info->geometry.max_height = height;
info->geometry.aspect_ratio = aspect;
info->timing.fps = FramesPerSecond;
info->timing.sample_rate = (double)SampleRate;
}
void retro_init(void)
{
struct retro_log_callback log;
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
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
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
}
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"
};
char buffer[5];
buffer[0] = rom[0xac];
buffer[1] = rom[0xad];
buffer[2] = rom[0xae];
buffer[3] = rom[0xaf];
buffer[4] = 0;
cpuSaveType = 0;
flashSize = 0x10000;
eepromSize = 512;
rtcEnabled = false;
mirroringEnable = false;
log("GameID in ROM is: %s\n", buffer);
bool found = false;
int found_no = 0;
for (int i = 0; i < 512; i++) {
if (!strcmp(gbaover[i].romid, buffer)) {
found = true;
found_no = i;
break;
}
}
if (found) {
log("Found ROM in vba-over list.\n");
log("Name : %s\n", gbaover[found_no].romtitle);
cpuSaveType = gbaover[found_no].saveType;
if (gbaover[found_no].saveSize != 0) {
unsigned size = gbaover[found_no].saveSize;
if ((cpuSaveType == 3) && ((size == 65536) || (size == 131072)))
flashSize = size;
else if ((cpuSaveType == 1) && (size == 8192))
eepromSize = 0x2000;
}
rtcEnabled = gbaover[found_no].rtcEnabled;
mirroringEnable = gbaover[found_no].mirroringEnabled;
}
if (!cpuSaveType) {
utilGBAFindSave(romSize);
}
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);
if (cpuSaveType == 1)
log("eepromSize : %d.\n", eepromSize);
log("mirroringEnable : %d.\n", mirroringEnable);
}
static void update_colormaps(void)
{
#ifdef FRONTEND_SUPPORTS_RGB565
systemColorDepth = 16;
systemRedShift = 11;
systemGreenShift = 6;
systemBlueShift = 0;
#else
systemColorDepth = 32;
systemRedShift = 19;
systemGreenShift = 11;
systemBlueShift = 3;
#endif
utilUpdateSystemColorMaps(false);
log("Color Depth = %d\n", systemColorDepth);
}
#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();
saveType = cpuSaveType;
if (flashSize == 0x10000 || flashSize == 0x20000)
flashSetSize(flashSize);
rtcEnable(rtcEnabled);
rtcEnableRumble(!rtcEnabled);
doMirroring(mirroringEnable);
soundSetSampleRate(SampleRate);
if (usebios) {
snprintf(biosfile, sizeof(biosfile), "%s%c%s", retro_system_directory, SLASH, "gba_bios.bin");
log("Loading bios: %s\n", biosfile);
}
CPUInit(biosfile, usebios);
width = GBAWidth;
height = GBAHeight;
// CPUReset() will reset eepromSize to 512.
// Save current eepromSize override then restore after CPUReset()
int tmp = eepromSize;
CPUReset();
eepromSize = tmp;
}
static void gb_init(void)
{
const char *biosname[] = {"gb_bios.bin", "gbc_bios.bin"};
log("Loading VBA-M Core (GB/GBC)...\n");
gbGetHardwareType();
if (usebios) {
snprintf(biosfile, sizeof(biosfile), "%s%c%s",
retro_system_directory, SLASH, biosname[gbCgbMode]);
log("Loading bios: %s\n", biosfile);
}
gbCPUInit(biosfile, usebios);
if (gbBorderOn) {
width = gbBorderLineSkip = SGBWidth;
height = SGBHeight;
gbBorderColumnSkip = (SGBWidth - GBWidth) >> 1;
gbBorderRowSkip = (SGBHeight - GBHeight) >> 1;
} else {
width = gbBorderLineSkip = GBWidth;
height = GBHeight;
gbBorderColumnSkip = gbBorderRowSkip = 0;
}
gbSoundSetSampleRate(SampleRate);
gbSoundSetDeclicking(1);
gbReset(); // also resets sound;
// VBA-M always updates time based on current time and not in-game time.
// No need to add RTC data to RETRO_MEMORY_RTC, so its safe to place this here.
gbUpdateRTC();
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 (gb_hasbattery)
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");
}
static void gba_soundchanged(void)
{
soundInterpolation = sndInterpolation;
soundFiltering = sndFiltering;
}
void retro_deinit(void)
{
emulating = 0;
core->emuCleanUp();
soundShutdown();
}
void retro_reset(void)
{
// save current eepromSize
int tmp = eepromSize;
core->emuReset();
eepromSize = tmp;
}
#define MAX_BUTTONS 10
static const unsigned binds[4][MAX_BUTTONS] = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // placeholder for no input
{
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
},
{
RETRO_DEVICE_ID_JOYPAD_B,
RETRO_DEVICE_ID_JOYPAD_Y,
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
},
{
RETRO_DEVICE_ID_JOYPAD_B,
RETRO_DEVICE_ID_JOYPAD_A,
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
}
};
#define TURBO_BUTTONS 2
static bool turbo_enable = false;
static int turbo_delay = 3;
static int turbo_delay_counter[TURBO_BUTTONS] = {0};
static const unsigned turbo_binds[4][TURBO_BUTTONS] = {
{ 0, 0 }, // placeholder for no input
{
RETRO_DEVICE_ID_JOYPAD_X,
RETRO_DEVICE_ID_JOYPAD_Y
},
{
RETRO_DEVICE_ID_JOYPAD_A,
RETRO_DEVICE_ID_JOYPAD_X
},
{
RETRO_DEVICE_ID_JOYPAD_Y,
RETRO_DEVICE_ID_JOYPAD_X
}
};
static void systemGbBorderOff(void);
static void systemUpdateSolarSensor(int level);
static uint8_t sensorDarkness = 0xE8;
static uint8_t sensorDarknessLevel = 0; // so we can adjust sensor from gamepad
static void update_variables(void)
{
bool sound_changed = false;
char key[256];
struct retro_variable var;
var.key = key;
int disabled_layers=0;
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);
int sound_enabled = 0x30F;
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') {
unsigned which = (i < 4) ? (1 << i) : (0x100 << (i - 4));
sound_enabled &= ~(which);
}
}
if (soundGetEnable() != sound_enabled)
soundSetEnable(sound_enabled & 0x30F);
var.key = "vbam_soundinterpolation";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
bool newval = (strcmp(var.value, "enabled") == 0);
if (sndInterpolation != newval) {
sndInterpolation = newval;
sound_changed = true;
}
}
var.key = "vbam_soundfiltering";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
float newval = atof(var.value) * 0.1f;
if (sndFiltering != newval) {
sndFiltering = newval;
sound_changed = true;
}
}
if (sound_changed) {
//Update interpolation and filtering values
gba_soundchanged();
}
var.key = "vbam_usebios";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
bool newval = (strcmp(var.value, "enabled") == 0);
usebios = newval;
}
var.key = "vbam_solarsensor";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
sensorDarknessLevel = atoi(var.value);
systemUpdateSolarSensor(sensorDarknessLevel);
}
var.key = "vbam_showborders";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
int oldval = (gbBorderOn << 1) | gbBorderAutomatic;
if (strcmp(var.value, "auto") == 0) {
gbBorderOn = 0;
gbBorderAutomatic = 1;