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snes9x/libretro/libretro.cpp

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#include "libretro.h"
#include "snes9x.h"
#include "memmap.h"
#include "srtc.h"
#include "apu/apu.h"
#include "apu/bapu/snes/snes.hpp"
#include "gfx.h"
#include "snapshot.h"
#include "controls.h"
#include "cheats.h"
#include "movie.h"
#include "logger.h"
#include "display.h"
#include "conffile.h"
#include <stdio.h>
#ifndef __WIN32__
#include <unistd.h>
#endif
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#define RETRO_DEVICE_JOYPAD_MULTITAP ((1 << 8) | RETRO_DEVICE_JOYPAD)
#define RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE ((1 << 8) | RETRO_DEVICE_LIGHTGUN)
#define RETRO_DEVICE_LIGHTGUN_JUSTIFIER ((2 << 8) | RETRO_DEVICE_LIGHTGUN)
#define RETRO_DEVICE_LIGHTGUN_JUSTIFIERS ((3 << 8) | RETRO_DEVICE_LIGHTGUN)
#define RETRO_MEMORY_SNES_BSX_RAM ((1 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_SNES_BSX_PRAM ((2 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_SNES_SUFAMI_TURBO_A_RAM ((3 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_SNES_SUFAMI_TURBO_B_RAM ((4 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_SNES_GAME_BOY_RAM ((5 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_SNES_GAME_BOY_RTC ((6 << 8) | RETRO_MEMORY_RTC)
#define RETRO_GAME_TYPE_BSX 0x101
#define RETRO_GAME_TYPE_BSX_SLOTTED 0x102
#define RETRO_GAME_TYPE_SUFAMI_TURBO 0x103
#define RETRO_GAME_TYPE_SUPER_GAME_BOY 0x104
#define SNES_4_3 4.0f / 3.0f
#define SNES_8_7 8.0f / 7.0f
char g_rom_dir[PATH_MAX];
char g_basename[PATH_MAX];
static retro_log_printf_t log_cb = NULL;
static retro_video_refresh_t video_cb = NULL;
static retro_audio_sample_t audio_cb = NULL;
static retro_audio_sample_batch_t audio_batch_cb = NULL;
static retro_input_poll_t poll_cb = NULL;
static retro_input_state_t input_state_cb = NULL;
static void extract_basename(char *buf, const char *path, size_t size)
{
const char *base = strrchr(path, '/');
if (!base)
base = strrchr(path, '\\');
if (!base)
base = path;
if (*base == '\\' || *base == '/')
base++;
strncpy(buf, base, size - 1);
buf[size - 1] = '\0';
char *ext = strrchr(buf, '.');
if (ext)
*ext = '\0';
}
static void extract_directory(char *buf, const char *path, size_t size)
{
strncpy(buf, path, size - 1);
buf[size - 1] = '\0';
char *base = strrchr(buf, '/');
if (!base)
base = strrchr(buf, '\\');
if (base)
*base = '\0';
else
buf[0] = '\0';
}
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_state_cb = cb;
}
enum overscan_mode {
OVERSCAN_CROP_ON,
OVERSCAN_CROP_OFF,
OVERSCAN_CROP_AUTO
};
enum aspect_mode {
ASPECT_RATIO_4_3,
ASPECT_RATIO_8_7,
ASPECT_RATIO_NTSC,
ASPECT_RATIO_PAL,
ASPECT_RATIO_AUTO
};
static retro_environment_t environ_cb;
static overscan_mode crop_overscan_mode = OVERSCAN_CROP_ON; // default to crop
static aspect_mode aspect_ratio_mode = ASPECT_RATIO_4_3; // default to 4:3
static bool rom_loaded = false;
void retro_set_environment(retro_environment_t cb)
{
environ_cb = cb;
struct retro_variable variables[] = {
// These variable names and possible values constitute an ABI with ZMZ (ZSNES Libretro player).
// Changing "Show layer 1" is fine, but don't change "layer_1"/etc or the possible values ("Yes|No").
// Adding more variables and rearranging them is safe.
{ "snes9x_layer_1", "Show layer 1; enabled|disabled" },
{ "snes9x_layer_2", "Show layer 2; enabled|disabled" },
{ "snes9x_layer_3", "Show layer 3; enabled|disabled" },
{ "snes9x_layer_4", "Show layer 4; enabled|disabled" },
{ "snes9x_layer_5", "Show sprite layer; enabled|disabled" },
{ "snes9x_gfx_clip", "Enable graphic clip windows; enabled|disabled" },
{ "snes9x_gfx_transp", "Enable transparency effects; enabled|disabled" },
{ "snes9x_sndchan_1", "Enable sound channel 1; enabled|disabled" },
{ "snes9x_sndchan_2", "Enable sound channel 2; enabled|disabled" },
{ "snes9x_sndchan_3", "Enable sound channel 3; enabled|disabled" },
{ "snes9x_sndchan_4", "Enable sound channel 4; enabled|disabled" },
{ "snes9x_sndchan_5", "Enable sound channel 5; enabled|disabled" },
{ "snes9x_sndchan_6", "Enable sound channel 6; enabled|disabled" },
{ "snes9x_sndchan_7", "Enable sound channel 7; enabled|disabled" },
{ "snes9x_sndchan_8", "Enable sound channel 8; enabled|disabled" },
{ "snes9x_overscan", "Crop overscan; enabled|disabled|auto" },
{ "snes9x_aspect", "Preferred aspect ratio; 4:3|8:7|auto|ntsc|pal" },
{ NULL, NULL },
};
environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables);
const struct retro_controller_description port_1[] = {
{ "SNES Joypad", RETRO_DEVICE_JOYPAD },
{ "SNES Mouse", RETRO_DEVICE_MOUSE },
{ "Multitap", RETRO_DEVICE_JOYPAD_MULTITAP },
};
const struct retro_controller_description port_2[] = {
{ "SNES Joypad", RETRO_DEVICE_JOYPAD },
{ "SNES Mouse", RETRO_DEVICE_MOUSE },
{ "Multitap", RETRO_DEVICE_JOYPAD_MULTITAP },
{ "SuperScope", RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE },
{ "Justifier", RETRO_DEVICE_LIGHTGUN_JUSTIFIER },
};
const struct retro_controller_info ports[] = {
{ port_1, 3 },
{ port_2, 5 },
{ 0 },
};
environ_cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports);
}
void update_geometry()
{
struct retro_system_av_info av_info;
retro_get_system_av_info(&av_info);
environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
}
static void update_variables(void)
{
bool geometry_update = false;
char key[256];
struct retro_variable var;
var.key=key;
int disabled_channels=0;
strcpy(key, "snes9x_sndchan_x");
for (int i=0;i<8;i++)
{
key[strlen("snes9x_sndchan_")]='1'+i;
var.value=NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && !strcmp("disabled", var.value))
disabled_channels|=1<<i;
}
S9xSetSoundControl(disabled_channels^0xFF);
int disabled_layers=0;
strcpy(key, "snes9x_layer_x");
for (int i=0;i<5;i++)
{
key[strlen("snes9x_layer_")]='1'+i;
var.value=NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && !strcmp("disabled", var.value))
disabled_layers|=1<<i;
}
Settings.BG_Forced=disabled_layers;
//for some reason, Transparency seems to control both the fixed color and the windowing registers?
var.key="snes9x_gfx_clip";
var.value=NULL;
Settings.DisableGraphicWindows=(environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && !strcmp("disabled", var.value));
var.key="snes9x_gfx_transp";
var.value=NULL;
Settings.Transparency=!(environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value && !strcmp("disabled", var.value));
var.key = "snes9x_overscan";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
overscan_mode newval = OVERSCAN_CROP_AUTO;
if (strcmp(var.value, "enabled") == 0)
newval = OVERSCAN_CROP_ON;
else if (strcmp(var.value, "disabled") == 0)
newval = OVERSCAN_CROP_OFF;
if (newval != crop_overscan_mode)
{
crop_overscan_mode = newval;
geometry_update = true;
}
}
var.key = "snes9x_aspect";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
aspect_mode newval = ASPECT_RATIO_AUTO;
if (strcmp(var.value, "ntsc") == 0)
newval = ASPECT_RATIO_NTSC;
else if (strcmp(var.value, "pal") == 0)
newval = ASPECT_RATIO_PAL;
else if (strcmp(var.value, "4:3") == 0)
newval = ASPECT_RATIO_4_3;
else if (strcmp(var.value, "8:7") == 0)
newval = ASPECT_RATIO_8_7;
if (newval != aspect_ratio_mode)
{
aspect_ratio_mode = newval;
geometry_update = true;
}
}
if (geometry_update)
update_geometry();
}
static void S9xAudioCallback(void*)
{
// Just pick a big buffer. We won't use it all.
static int16_t audio_buf[0x20000];
S9xFinalizeSamples();
size_t avail = S9xGetSampleCount();
S9xMixSamples((uint8*)audio_buf, avail);
audio_batch_cb(audio_buf,avail >> 1);
}
void retro_get_system_info(struct retro_system_info *info)
{
memset(info,0,sizeof(retro_system_info));
info->library_name = "Snes9x";
info->library_version = VERSION;
info->valid_extensions = "smc|sfc|swc|fig|bs";
info->need_fullpath = false;
info->block_extract = false;
}
float get_aspect_ratio(unsigned width, unsigned height)
{
if (aspect_ratio_mode == ASPECT_RATIO_4_3)
{
return SNES_4_3;
}
else if (aspect_ratio_mode == ASPECT_RATIO_8_7)
{
return SNES_8_7;
}
// OV2: not sure if these really make sense - NTSC is similar to 4:3, PAL looks weird
float sample_frequency_ntsc = 135000000.0 / 11.0;
float sample_frequency_pal = 14750000.0;
float sample_freq = retro_get_region() == RETRO_REGION_NTSC ? sample_frequency_ntsc : sample_frequency_pal;
float dot_rate = SNES::cpu.frequency / 4.0;
if (aspect_ratio_mode == ASPECT_RATIO_NTSC) // ntsc
{
sample_freq = sample_frequency_ntsc;
dot_rate = NTSC_MASTER_CLOCK / 4.0;
}
else if (aspect_ratio_mode == ASPECT_RATIO_PAL) // pal
{
sample_freq = sample_frequency_pal;
dot_rate = PAL_MASTER_CLOCK / 4.0;
}
float par = sample_freq / 2.0 / dot_rate;
return (float)width * par / (float)height;
}
void retro_get_system_av_info(struct retro_system_av_info *info)
{
memset(info,0,sizeof(retro_system_av_info));
unsigned width = SNES_WIDTH;
unsigned height = PPU.ScreenHeight;
if (crop_overscan_mode == OVERSCAN_CROP_ON)
height = SNES_HEIGHT;
else if (crop_overscan_mode == OVERSCAN_CROP_OFF)
height = SNES_HEIGHT_EXTENDED;
info->geometry.base_width = width;
info->geometry.base_height = height;
info->geometry.max_width = MAX_SNES_WIDTH;
info->geometry.max_height = MAX_SNES_HEIGHT;
info->geometry.aspect_ratio = get_aspect_ratio(width, height);
info->timing.sample_rate = 32040;
info->timing.fps = retro_get_region() == RETRO_REGION_NTSC ? 21477272.0 / 357366.0 : 21281370.0 / 425568.0;
}
unsigned retro_api_version()
{
return RETRO_API_VERSION;
}
void retro_reset()
{
S9xSoftReset();
}
static unsigned snes_devices[2];
void retro_set_controller_port_device(unsigned port, unsigned device)
{
if(port < 2)
{
int offset = snes_devices[0] == RETRO_DEVICE_JOYPAD_MULTITAP ? 4 : 1;
switch (device)
{
case RETRO_DEVICE_JOYPAD:
S9xSetController(port, CTL_JOYPAD, port * offset, 0, 0, 0);
snes_devices[port] = RETRO_DEVICE_JOYPAD;
break;
case RETRO_DEVICE_JOYPAD_MULTITAP:
S9xSetController(port, CTL_MP5, port * offset, port * offset + 1, port * offset + 2, port * offset + 3);
snes_devices[port] = RETRO_DEVICE_JOYPAD_MULTITAP;
break;
case RETRO_DEVICE_MOUSE:
S9xSetController(port, CTL_MOUSE, 0, 0, 0, 0);
snes_devices[port] = RETRO_DEVICE_MOUSE;
break;
case RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE:
S9xSetController(port, CTL_SUPERSCOPE, 0, 0, 0, 0);
snes_devices[port] = RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE;
break;
case RETRO_DEVICE_LIGHTGUN_JUSTIFIER:
S9xSetController(port, CTL_JUSTIFIER, 0, 0, 0, 0);
snes_devices[port] = RETRO_DEVICE_LIGHTGUN_JUSTIFIER;
break;
default:
if (log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: Invalid device (%d).\n", device);
}
if (!port)
retro_set_controller_port_device(1, snes_devices[1]);
}
else if(device != RETRO_DEVICE_NONE)
log_cb(RETRO_LOG_INFO, "[libretro]: Nonexistent Port (%d).\n", port);
}
void retro_cheat_reset()
{
S9xDeleteCheats();
}
void retro_cheat_set(unsigned index, bool enabled, const char *codeline)
{
char codeCopy[256];
char* code;
if (codeline == (char *)'\0') return;
strcpy(codeCopy,codeline);
code=strtok(codeCopy,"+,.; ");
while (code != NULL) {
//Convert GH RAW to PAR
if (strlen(code)==9 && code[6]==':')
{
code[6]=code[7];
code[7]=code[8];
code[8]='\0';
}
/* Goldfinger was broken and nobody noticed. Removed */
if (S9xAddCheatGroup ("retro", code) >= 0)
{
if (enabled)
S9xEnableCheatGroup (Cheat.g.size () - 1);
}
else
{
printf("CHEAT: Failed to recognize %s\n",code);
}
code=strtok(NULL,"+,.; "); // bad code, ignore
}
S9xCheatsEnable();
}
static void init_descriptors(void)
{
struct retro_input_descriptor desc[] = {
{ 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_X, "X" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Y" },
{ 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_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_B, "B" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "X" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Y" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "L" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "R" },
{ 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_B, "B" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "X" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Y" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "L" },
{ 2, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "R" },
{ 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_B, "B" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "X" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Y" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "L" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "R" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 3, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "A" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "X" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Y" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "L" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "R" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },
{ 4, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
{ 0 },
};
environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
}
bool retro_load_game(const struct retro_game_info *game)
{
init_descriptors();
update_variables();
if(game->data == NULL && game->size == 0 && game->path != NULL)
rom_loaded = Memory.LoadROM(game->path);
else
{
if (game->path != NULL)
{
extract_basename(g_basename, game->path, sizeof(g_basename));
extract_directory(g_rom_dir, game->path, sizeof(g_rom_dir));
}
rom_loaded = Memory.LoadROMMem((const uint8_t*)game->data ,game->size);
}
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
if(!environ_cb || !environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
{
return false;
}
S9xGraphicsDeinit();
S9xGraphicsInit();
if (!rom_loaded && log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: Rom loading failed...\n");
return rom_loaded;
}
void retro_unload_game(void)
{}
bool retro_load_game_special(unsigned game_type,
const struct retro_game_info *info, size_t num_info) {
init_descriptors();
update_variables();
switch (game_type) {
case RETRO_GAME_TYPE_BSX:
if(num_info == 1) {
rom_loaded = Memory.LoadROMMem((const uint8_t*)info[0].data,info[0].size);
} else if(num_info == 2) {
memcpy(Memory.BIOSROM,(const uint8_t*)info[0].data,info[0].size);
rom_loaded = Memory.LoadROMMem((const uint8_t*)info[1].data,info[1].size);
}
if (!rom_loaded && log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: BSX ROM loading failed...\n");
break;
case RETRO_GAME_TYPE_BSX_SLOTTED:
if(num_info == 2)
rom_loaded = Memory.LoadMultiCartMem((const uint8_t*)info[0].data, info[0].size,
(const uint8_t*)info[1].data, info[1].size, NULL, 0);
if (!rom_loaded && log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: Multirom loading failed...\n");
break;
case RETRO_GAME_TYPE_SUFAMI_TURBO:
if(num_info == 3)
rom_loaded = Memory.LoadMultiCartMem((const uint8_t*)info[1].data, info[1].size,
(const uint8_t*)info[2].data, info[2].size, (const uint8_t*)info[0].data, info[0].size);
if (!rom_loaded && log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: Sufami Turbo ROM loading failed...\n");
break;
default:
rom_loaded = false;
break;
}
return rom_loaded;
}
static void map_buttons();
static void check_system_specs(void)
{
/* TODO - might have to variably set performance level based on SuperFX/SA-1/etc */
unsigned level = 12;
environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
}
void retro_init()
{
struct retro_log_callback log;
if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
log_cb = log.log;
else
log_cb = NULL;
memset(&Settings, 0, sizeof(Settings));
Settings.MouseMaster = TRUE;
Settings.SuperScopeMaster = TRUE;
Settings.JustifierMaster = TRUE;
Settings.MultiPlayer5Master = TRUE;
Settings.FrameTimePAL = 20000;
Settings.FrameTimeNTSC = 16667;
Settings.SixteenBitSound = TRUE;
Settings.Stereo = TRUE;
Settings.SoundPlaybackRate = 32040;
Settings.SoundInputRate = 32040;
Settings.SupportHiRes = TRUE;
Settings.Transparency = TRUE;
Settings.AutoDisplayMessages = TRUE;
Settings.InitialInfoStringTimeout = 120;
Settings.HDMATimingHack = 100;
Settings.BlockInvalidVRAMAccessMaster = TRUE;
Settings.WrongMovieStateProtection = TRUE;
Settings.DumpStreamsMaxFrames = -1;
Settings.StretchScreenshots = 0;
Settings.SnapshotScreenshots = FALSE;
Settings.CartAName[0] = 0;
Settings.CartBName[0] = 0;
Settings.AutoSaveDelay = 1;
Settings.DontSaveOopsSnapshot = TRUE;
CPU.Flags = 0;
if (!Memory.Init() || !S9xInitAPU())
{
Memory.Deinit();
S9xDeinitAPU();
if (log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: Failed to init Memory or APU.\n");
exit(1);
}
S9xInitSound(1000, 0);//just give it a 1 second buffer
S9xSetSoundMute(FALSE);
S9xSetSamplesAvailableCallback(S9xAudioCallback, NULL);
GFX.Pitch = MAX_SNES_WIDTH * sizeof(uint16);
GFX.Screen = (uint16*) calloc(1, GFX.Pitch * MAX_SNES_HEIGHT);
S9xGraphicsInit();
S9xInitInputDevices();
for (int i = 0; i < 2; i++)
{
S9xSetController(i, CTL_JOYPAD, i, 0, 0, 0);
snes_devices[i] = RETRO_DEVICE_JOYPAD;
}
S9xUnmapAllControls();
map_buttons();
check_system_specs();
}
#define MAP_BUTTON(id, name) S9xMapButton((id), S9xGetCommandT((name)), false)
#define MAKE_BUTTON(pad, btn) (((pad)<<4)|(btn))
#define PAD_1 1
#define PAD_2 2
#define PAD_3 3
#define PAD_4 4
#define PAD_5 5
#define BTN_B RETRO_DEVICE_ID_JOYPAD_B
#define BTN_Y RETRO_DEVICE_ID_JOYPAD_Y
#define BTN_SELECT RETRO_DEVICE_ID_JOYPAD_SELECT
#define BTN_START RETRO_DEVICE_ID_JOYPAD_START
#define BTN_UP RETRO_DEVICE_ID_JOYPAD_UP
#define BTN_DOWN RETRO_DEVICE_ID_JOYPAD_DOWN
#define BTN_LEFT RETRO_DEVICE_ID_JOYPAD_LEFT
#define BTN_RIGHT RETRO_DEVICE_ID_JOYPAD_RIGHT
#define BTN_A RETRO_DEVICE_ID_JOYPAD_A
#define BTN_X RETRO_DEVICE_ID_JOYPAD_X
#define BTN_L RETRO_DEVICE_ID_JOYPAD_L
#define BTN_R RETRO_DEVICE_ID_JOYPAD_R
#define BTN_FIRST BTN_B
#define BTN_LAST BTN_R
#define MOUSE_X RETRO_DEVICE_ID_MOUSE_X
#define MOUSE_Y RETRO_DEVICE_ID_MOUSE_Y
#define MOUSE_LEFT RETRO_DEVICE_ID_MOUSE_LEFT
#define MOUSE_RIGHT RETRO_DEVICE_ID_MOUSE_RIGHT
#define MOUSE_FIRST MOUSE_X
#define MOUSE_LAST MOUSE_RIGHT
#define SCOPE_X RETRO_DEVICE_ID_SUPER_SCOPE_X
#define SCOPE_Y RETRO_DEVICE_ID_SUPER_SCOPE_Y
#define SCOPE_TRIGGER RETRO_DEVICE_ID_LIGHTGUN_TRIGGER
#define SCOPE_CURSOR RETRO_DEVICE_ID_LIGHTGUN_CURSOR
#define SCOPE_TURBO RETRO_DEVICE_ID_LIGHTGUN_TURBO
#define SCOPE_PAUSE RETRO_DEVICE_ID_LIGHTGUN_PAUSE
#define SCOPE_FIRST SCOPE_X
#define SCOPE_LAST SCOPE_PAUSE
#define JUSTIFIER_X RETRO_DEVICE_ID_JUSTIFIER_X
#define JUSTIFIER_Y RETRO_DEVICE_ID_JUSTIFIER_Y
#define JUSTIFIER_TRIGGER RETRO_DEVICE_ID_LIGHTGUN_TRIGGER
#define JUSTIFIER_OFFSCREEN RETRO_DEVICE_ID_LIGHTGUN_TURBO
#define JUSTIFIER_START RETRO_DEVICE_ID_LIGHTGUN_PAUSE
#define JUSTIFIER_FIRST JUSTIFIER_X
#define JUSTIFIER_LAST JUSTIFIER_START
#define BTN_POINTER (BTN_LAST + 1)
#define BTN_POINTER2 (BTN_POINTER + 1)
static void map_buttons()
{
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_A), "Joypad1 A");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_B), "Joypad1 B");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_X), "Joypad1 X");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_Y), "Joypad1 Y");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_SELECT), "{Joypad1 Select,Mouse1 L}");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_START), "{Joypad1 Start,Mouse1 R}");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_L), "Joypad1 L");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_R), "Joypad1 R");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_LEFT), "Joypad1 Left");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_RIGHT), "Joypad1 Right");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_UP), "Joypad1 Up");
MAP_BUTTON(MAKE_BUTTON(PAD_1, BTN_DOWN), "Joypad1 Down");
S9xMapPointer((BTN_POINTER), S9xGetCommandT("Pointer Mouse1+Superscope+Justifier1"), false);
S9xMapPointer((BTN_POINTER2), S9xGetCommandT("Pointer Mouse2"), false);
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_A), "Joypad2 A");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_B), "Joypad2 B");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_X), "Joypad2 X");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_Y), "Joypad2 Y");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_SELECT), "{Joypad2 Select,Mouse2 L,Superscope Fire,Justifier1 Trigger}");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_START), "{Joypad2 Start,Mouse2 R,Superscope Cursor,Justifier1 Start}");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_L), "Joypad2 L");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_R), "Joypad2 R");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_LEFT), "Joypad2 Left");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_RIGHT), "Joypad2 Right");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_UP), "{Joypad2 Up,Superscope ToggleTurbo,Justifier1 AimOffscreen}");
MAP_BUTTON(MAKE_BUTTON(PAD_2, BTN_DOWN), "{Joypad2 Down,Superscope Pause}");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_A), "Joypad3 A");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_B), "Joypad3 B");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_X), "Joypad3 X");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_Y), "Joypad3 Y");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_SELECT), "Joypad3 Select");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_START), "Joypad3 Start");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_L), "Joypad3 L");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_R), "Joypad3 R");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_LEFT), "Joypad3 Left");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_RIGHT), "Joypad3 Right");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_UP), "Joypad3 Up");
MAP_BUTTON(MAKE_BUTTON(PAD_3, BTN_DOWN), "Joypad3 Down");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_A), "Joypad4 A");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_B), "Joypad4 B");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_X), "Joypad4 X");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_Y), "Joypad4 Y");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_SELECT), "Joypad4 Select");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_START), "Joypad4 Start");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_L), "Joypad4 L");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_R), "Joypad4 R");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_LEFT), "Joypad4 Left");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_RIGHT), "Joypad4 Right");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_UP), "Joypad4 Up");
MAP_BUTTON(MAKE_BUTTON(PAD_4, BTN_DOWN), "Joypad4 Down");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_A), "Joypad5 A");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_B), "Joypad5 B");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_X), "Joypad5 X");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_Y), "Joypad5 Y");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_SELECT), "Joypad5 Select");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_START), "Joypad5 Start");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_L), "Joypad5 L");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_R), "Joypad5 R");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_LEFT), "Joypad5 Left");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_RIGHT), "Joypad5 Right");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_UP), "Joypad5 Up");
MAP_BUTTON(MAKE_BUTTON(PAD_5, BTN_DOWN), "Joypad5 Down");
}
// libretro uses relative values for analogue devices.
// S9x seems to use absolute values, but do convert these into relative values in the core. (Why?!)
// Hack around it. :)
static int16_t snes_mouse_state[2][2] = {{0}, {0}};
static int16_t snes_scope_state[2] = {0};
static int16_t snes_justifier_state[2][2] = {{0}, {0}};
static void report_buttons()
{
int _x, _y;
int offset = snes_devices[0] == RETRO_DEVICE_JOYPAD_MULTITAP ? 4 : 1;
for (int port = 0; port <= 1; port++)
{
switch (snes_devices[port])
{
case RETRO_DEVICE_JOYPAD:
for (int i = BTN_FIRST; i <= BTN_LAST; i++)
S9xReportButton(MAKE_BUTTON(port * offset + 1, i), input_state_cb(port * offset, RETRO_DEVICE_JOYPAD, 0, i));
break;
case RETRO_DEVICE_JOYPAD_MULTITAP:
for (int j = 0; j < 4; j++)
for (int i = BTN_FIRST; i <= BTN_LAST; i++)
S9xReportButton(MAKE_BUTTON(port * offset + j + 1, i), input_state_cb(port * offset + j, RETRO_DEVICE_JOYPAD, 0, i));
break;
case RETRO_DEVICE_MOUSE:
_x = input_state_cb(port, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X);
_y = input_state_cb(port, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y);
snes_mouse_state[port][0] += _x;
snes_mouse_state[port][1] += _y;
S9xReportPointer(BTN_POINTER + port, snes_mouse_state[port][0], snes_mouse_state[port][1]);
for (int i = MOUSE_LEFT; i <= MOUSE_LAST; i++)
S9xReportButton(MAKE_BUTTON(port + 1, i), input_state_cb(port, RETRO_DEVICE_MOUSE, 0, i));
break;
case RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE:
snes_scope_state[0] += input_state_cb(port, RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE, 0, RETRO_DEVICE_ID_LIGHTGUN_X);
snes_scope_state[1] += input_state_cb(port, RETRO_DEVICE_LIGHTGUN_SUPER_SCOPE, 0, RETRO_DEVICE_ID_LIGHTGUN_Y);
if (snes_scope_state[0] < 0) snes_scope_state[0] = 0;
else if (snes_scope_state[0] > (SNES_WIDTH-1)) snes_scope_state[0] = SNES_WIDTH-1;
if (snes_scope_state[1] < 0) snes_scope_state[1] = 0;
else if (snes_scope_state[1] > (SNES_HEIGHT-1)) snes_scope_state[1] = SNES_HEIGHT-1;
S9xReportPointer(BTN_POINTER, snes_scope_state[0], snes_scope_state[1]);
for (int i = SCOPE_TRIGGER; i <= SCOPE_LAST; i++)
S9xReportButton(MAKE_BUTTON(2, i), input_state_cb(port, RETRO_DEVICE_LIGHTGUN, 0, i));
break;
case RETRO_DEVICE_LIGHTGUN_JUSTIFIER:
case RETRO_DEVICE_LIGHTGUN_JUSTIFIERS:
snes_justifier_state[port][0] += input_state_cb(port, RETRO_DEVICE_LIGHTGUN_JUSTIFIER, 0, RETRO_DEVICE_ID_LIGHTGUN_X);
snes_justifier_state[port][1] += input_state_cb(port, RETRO_DEVICE_LIGHTGUN_JUSTIFIER, 0, RETRO_DEVICE_ID_LIGHTGUN_Y);
if (snes_justifier_state[port][0] < 0) snes_justifier_state[port][0] = 0;
else if (snes_justifier_state[port][0] > (SNES_WIDTH-1)) snes_justifier_state[port][0] = SNES_WIDTH-1;
if (snes_justifier_state[port][1] < 0) snes_justifier_state[port][1] = 0;
else if (snes_justifier_state[port][1] > (SNES_HEIGHT-1)) snes_justifier_state[port][1] = SNES_HEIGHT-1;
S9xReportPointer(BTN_POINTER, snes_justifier_state[port][0], snes_justifier_state[port][1]);
for (int i = JUSTIFIER_TRIGGER; i <= JUSTIFIER_LAST; i++)
S9xReportButton(MAKE_BUTTON(2, i), input_state_cb(port, RETRO_DEVICE_LIGHTGUN, 0, i));
break;
default:
if (log_cb)
log_cb(RETRO_LOG_ERROR, "[libretro]: Unknown device...\n");
}
}
}
void retro_run()
{
static uint16 height = PPU.ScreenHeight;
bool updated = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
update_variables();
if (height != PPU.ScreenHeight)
{
update_geometry();
height = PPU.ScreenHeight;
}
poll_cb();
report_buttons();
S9xMainLoop();
}
void retro_deinit()
{
S9xDeinitAPU();
Memory.Deinit();
S9xGraphicsDeinit();
S9xUnmapAllControls();
free(GFX.Screen);
}
unsigned retro_get_region()
{
return Settings.PAL ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
}
void* retro_get_memory_data(unsigned type)
{
void* data;
switch(type) {
case RETRO_MEMORY_SNES_SUFAMI_TURBO_A_RAM:
case RETRO_MEMORY_SAVE_RAM:
data = Memory.SRAM;
break;
case RETRO_MEMORY_SNES_SUFAMI_TURBO_B_RAM:
data = Multi.sramB;
break;
case RETRO_MEMORY_RTC:
data = RTCData.reg;
break;
case RETRO_MEMORY_SYSTEM_RAM:
data = Memory.RAM;
break;
case RETRO_MEMORY_VIDEO_RAM:
data = Memory.VRAM;
break;
default:
data = NULL;
break;
}
return data;
}
size_t retro_get_memory_size(unsigned type)
{
size_t size;
switch(type) {
case RETRO_MEMORY_SNES_SUFAMI_TURBO_A_RAM:
case RETRO_MEMORY_SAVE_RAM:
size = (unsigned) (Memory.SRAMSize ? (1 << (Memory.SRAMSize + 3)) * 128 : 0);
if (size > 0x20000)
size = 0x20000;
break;
case RETRO_MEMORY_SNES_SUFAMI_TURBO_B_RAM:
size = (unsigned) (Multi.cartType && Multi.sramSizeB ? (1 << (Multi.sramSizeB + 3)) * 128 : 0);
break;
case RETRO_MEMORY_RTC:
size = (Settings.SRTC || Settings.SPC7110RTC)?20:0;
break;
case RETRO_MEMORY_SYSTEM_RAM:
size = 128 * 1024;
break;
case RETRO_MEMORY_VIDEO_RAM:
size = 64 * 1024;
break;
default:
size = 0;
break;
}
return size;
}
size_t retro_serialize_size()
{
return rom_loaded ? S9xFreezeSize() : 0;
}
bool retro_serialize(void *data, size_t size)
{
if (S9xFreezeGameMem((uint8_t*)data,size) == FALSE)
return false;
return true;
}
bool retro_unserialize(const void* data, size_t size)
{
if (S9xUnfreezeGameMem((const uint8_t*)data,size) != SUCCESS)
return false;
return true;
}
bool8 S9xDeinitUpdate(int width, int height)
{
if (crop_overscan_mode == OVERSCAN_CROP_ON)
{
if (height >= SNES_HEIGHT << 1)
{
height = SNES_HEIGHT << 1;
}
else
{
height = SNES_HEIGHT;
}
}
else if (crop_overscan_mode == OVERSCAN_CROP_OFF)
{
if (height > SNES_HEIGHT_EXTENDED)
{
if (height < SNES_HEIGHT_EXTENDED << 1)
memset(GFX.Screen + (GFX.Pitch >> 1) * height,0,GFX.Pitch * ((SNES_HEIGHT_EXTENDED << 1) - height));
height = SNES_HEIGHT_EXTENDED << 1;
}
else
{
if (height < SNES_HEIGHT_EXTENDED)
memset(GFX.Screen + (GFX.Pitch >> 1) * height,0,GFX.Pitch * (SNES_HEIGHT_EXTENDED - height));
height = SNES_HEIGHT_EXTENDED;
}
}
video_cb(GFX.Screen, width, height, GFX.Pitch);
return TRUE;
}
bool8 S9xContinueUpdate(int width, int height)
{
return true;
}
// Dummy functions that should probably be implemented correctly later.
void S9xParsePortConfig(ConfigFile&, int) {}
void S9xSyncSpeed() {}
const char* S9xStringInput(const char* in) { return in; }
const char* S9xGetFilename(const char* in, s9x_getdirtype type)
{
static char newpath[2048];
newpath[0] = '\0';
switch (type)
{
case ROMFILENAME_DIR:
snprintf(newpath, sizeof(newpath), "%s%c%s%s",
g_rom_dir, SLASH_CHAR, g_basename, in);
return newpath;
default:
break;
}
return in;
}
const char* S9xGetDirectory(s9x_getdirtype type)
{
switch (type)
{
case ROMFILENAME_DIR:
return g_rom_dir;
default:
break;
}
return "";
}
void S9xInitInputDevices() {}
const char* S9xChooseFilename(unsigned char) { return ""; }
void S9xHandlePortCommand(s9xcommand_t, short, short) {}
bool S9xPollButton(unsigned int, bool*) { return false; }
void S9xToggleSoundChannel(int) {}
const char* S9xGetFilenameInc(const char* in, s9x_getdirtype) { return ""; }
const char* S9xBasename(const char* in) { return in; }
bool8 S9xInitUpdate() { return TRUE; }
void S9xExtraUsage() {}
bool8 S9xOpenSoundDevice() { return TRUE; }
void S9xMessage(int, int, const char*) {}
bool S9xPollAxis(unsigned int, short*) { return FALSE; }
void S9xSetPalette() {}
void S9xParseArg(char**, int&, int) {}
void S9xExit() {}
bool S9xPollPointer(unsigned int, short*, short*) { return false; }
const char *S9xChooseMovieFilename(unsigned char) { return NULL; }
bool8 S9xOpenSnapshotFile(const char* filepath, bool8 read_only, STREAM *file)
{
if(read_only)
{
if((*file = OPEN_STREAM(filepath, "rb")) != 0)
{
return (TRUE);
}
}
else
{
if((*file = OPEN_STREAM(filepath, "wb")) != 0)
{
return (TRUE);
}
}
return (FALSE);
}
void S9xCloseSnapshotFile(STREAM file)
{
CLOSE_STREAM(file);
}
void S9xAutoSaveSRAM()
{
return;
}
#ifndef __WIN32__
// S9x weirdness.
void _splitpath (const char *path, char *drive, char *dir, char *fname, char *ext)
{
*drive = 0;
const char *slash = strrchr(path, SLASH_CHAR),
*dot = strrchr(path, '.');
if (dot && slash && dot < slash)
dot = NULL;
if (!slash)
{
*dir = 0;
strcpy(fname, path);
if (dot)
{
fname[dot - path] = 0;
strcpy(ext, dot + 1);
}
else
*ext = 0;
}
else
{
strcpy(dir, path);
dir[slash - path] = 0;
strcpy(fname, slash + 1);
if (dot)
{
fname[dot - slash - 1] = 0;
strcpy(ext, dot + 1);
}
else
*ext = 0;
}
}
void _makepath (char *path, const char *, const char *dir, const char *fname, const char *ext)
{
if (dir && *dir)
{
strcpy(path, dir);
strcat(path, SLASH_STR);
}
else
*path = 0;
strcat(path, fname);
if (ext && *ext)
{
strcat(path, ".");
strcat(path, ext);
}
}
#endif // __WIN32__
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