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beetle-pce-fast-libretro/libretro.cpp
Awakened0 6af234014a Prefix Turbo Delay and Turbo Button Enable Core Options 
These options were missing the pce_ prefix all the other options have. Without them if you look in your core options file you wouldn't know what core they belong to.
2017-08-11 01:08:30 -04:00

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#include <stdarg.h>
#include "mednafen/mednafen.h"
#include "mednafen/git.h"
#include "mednafen/general.h"
#include "libretro.h"
#include <retro_miscellaneous.h>
#include <string/stdstring.h>
#include "mednafen/pce_fast/pce.h"
#include "mednafen/pce_fast/vdc.h"
#include "mednafen/pce_fast/psg.h"
#include "mednafen/pce_fast/input.h"
#include "mednafen/pce_fast/huc.h"
#include "mednafen/pce_fast/pcecd.h"
#include "mednafen/pce_fast/pcecd_drive.h"
#include "mednafen/settings-driver.h"
#include "mednafen/hw_misc/arcade_card/arcade_card.h"
#include "mednafen/mempatcher.h"
#include "mednafen/cdrom/cdromif.h"
#include "mednafen/cdrom/CDUtility.h"
#ifdef _MSC_VER
#include "mednafen/msvc_compat.h"
#endif
#define MEDNAFEN_CORE_NAME_MODULE "pce_fast"
#define MEDNAFEN_CORE_NAME "Mednafen PCE Fast"
#define MEDNAFEN_CORE_VERSION "v0.9.38.7"
#define MEDNAFEN_CORE_EXTENSIONS "pce|cue|ccd|chd"
#define MEDNAFEN_CORE_TIMING_FPS 59.82
#define MEDNAFEN_CORE_GEOMETRY_BASE_W 512
#define MEDNAFEN_CORE_GEOMETRY_BASE_H 243
#define MEDNAFEN_CORE_GEOMETRY_MAX_W 512
#define MEDNAFEN_CORE_GEOMETRY_MAX_H 243
#define MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO (6.0 / 5.0)
#define FB_WIDTH 512
#define FB_HEIGHT 243
static bool old_cdimagecache = false;
extern MDFNGI EmulatedPCE_Fast;
MDFNGI *MDFNGameInfo = &EmulatedPCE_Fast;
/* Mednafen - Multi-system Emulator
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
static PCEFast_PSG *psg = NULL;
extern ArcadeCard *arcade_card; // Bah, lousy globals.
static Blip_Buffer sbuf[2];
bool PCE_ACEnabled;
int pce_overclocked;
// Statically allocated for speed...or something.
uint8 ROMSpace[0x88 * 8192 + 8192]; // + 8192 for PC-as-pointer safety padding
uint8 BaseRAM[32768 + 8192]; // 8KB for PCE, 32KB for Super Grafx // + 8192 for PC-as-pointer safety padding
uint8 PCEIODataBuffer;
readfunc PCERead[0x100];
writefunc PCEWrite[0x100];
static DECLFR(PCEBusRead)
{
//printf("BUS Read: %02x %04x\n", A >> 13, A);
return(0xFF);
}
static DECLFW(PCENullWrite)
{
//printf("Null Write: %02x, %08x %02x\n", A >> 13, A, V);
}
static DECLFR(BaseRAMRead)
{
return((BaseRAM - (0xF8 * 8192))[A]);
}
static DECLFR(BaseRAMRead_Mirrored)
{
return(BaseRAM[A & 0x1FFF]);
}
static DECLFW(BaseRAMWrite)
{
(BaseRAM - (0xF8 * 8192))[A] = V;
}
static DECLFW(BaseRAMWrite_Mirrored)
{
BaseRAM[A & 0x1FFF] = V;
}
static DECLFR(IORead)
{
#include "mednafen/pce_fast/ioread.inc"
}
static DECLFW(IOWrite)
{
A &= 0x1FFF;
switch(A >> 10)
{
case 0: HuC6280_StealCycle();
VDC_Write(A, V);
break;
case 1: HuC6280_StealCycle();
VCE_Write(A, V);
break;
case 2: PCEIODataBuffer = V;
psg->Write(HuCPU.timestamp / pce_overclocked, A, V);
break;
case 3: PCEIODataBuffer = V;
HuC6280_TimerWrite(A, V);
break;
case 4: PCEIODataBuffer = V; INPUT_Write(A, V); break;
case 5: PCEIODataBuffer = V; HuC6280_IRQStatusWrite(A, V); break;
case 6:
if(!PCE_IsCD)
break;
if((A & 0x1E00) == 0x1A00)
{
if(arcade_card)
arcade_card->Write(A & 0x1FFF, V);
}
else
{
PCECD_Write(HuCPU.timestamp * 3, A, V);
}
break;
case 7: break; // Expansion.
}
}
static void PCECDIRQCB(bool asserted)
{
if(asserted)
HuC6280_IRQBegin(MDFN_IQIRQ2);
else
HuC6280_IRQEnd(MDFN_IQIRQ2);
}
bool PCE_InitCD(void)
{
PCECD_Settings cd_settings;
memset(&cd_settings, 0, sizeof(PCECD_Settings));
cd_settings.CDDA_Volume = (double)MDFN_GetSettingUI("pce_fast.cddavolume") / 100;
cd_settings.CD_Speed = MDFN_GetSettingUI("pce_fast.cdspeed");
cd_settings.ADPCM_Volume = (double)MDFN_GetSettingUI("pce_fast.adpcmvolume") / 100;
cd_settings.ADPCM_LPF = MDFN_GetSettingB("pce_fast.adpcmlp");
if(cd_settings.CDDA_Volume != 1.0)
MDFN_printf(_("CD-DA Volume: %d%%\n"), (int)(100 * cd_settings.CDDA_Volume));
if(cd_settings.ADPCM_Volume != 1.0)
MDFN_printf(_("ADPCM Volume: %d%%\n"), (int)(100 * cd_settings.ADPCM_Volume));
return(PCECD_Init(&cd_settings, PCECDIRQCB, PCE_MASTER_CLOCK, pce_overclocked, &sbuf[0], &sbuf[1]));
}
static int LoadCommon(void);
static void LoadCommonPre(void);
static bool TestMagic(const char *name, MDFNFILE *fp)
{
return(TRUE);
}
static int Load(const char *name, MDFNFILE *fp)
{
uint32 headerlen = 0;
uint32 r_size;
LoadCommonPre();
{
if(GET_FSIZE_PTR(fp) & 0x200) // 512 byte header!
headerlen = 512;
}
r_size = GET_FSIZE_PTR(fp) - headerlen;
if(r_size > 4096 * 1024) r_size = 4096 * 1024;
for(int x = 0; x < 0x100; x++)
{
PCERead[x] = PCEBusRead;
PCEWrite[x] = PCENullWrite;
}
HuCLoad(GET_FDATA_PTR(fp) + headerlen, GET_FSIZE_PTR(fp) - headerlen);
return(LoadCommon());
}
static void LoadCommonPre(void)
{
// FIXME: Make these globals less global!
pce_overclocked = MDFN_GetSettingUI("pce_fast.ocmultiplier");
PCE_ACEnabled = MDFN_GetSettingB("pce_fast.arcadecard");
if(pce_overclocked > 1)
MDFN_printf(_("CPU overclock: %dx\n"), pce_overclocked);
if(MDFN_GetSettingUI("pce_fast.cdspeed") > 1)
MDFN_printf(_("CD-ROM speed: %ux\n"), (unsigned int)MDFN_GetSettingUI("pce_fast.cdspeed"));
memset(HuCPUFastMap, 0, sizeof(HuCPUFastMap));
for(int x = 0; x < 0x100; x++)
{
PCERead[x] = PCEBusRead;
PCEWrite[x] = PCENullWrite;
}
MDFNMP_Init(1024, (1 << 21) / 1024);
}
static int LoadCommon(void)
{
VDC_Init(false);
{
PCERead[0xF8] = BaseRAMRead;
PCERead[0xF9] = PCERead[0xFA] = PCERead[0xFB] = BaseRAMRead_Mirrored;
PCEWrite[0xF8] = BaseRAMWrite;
PCEWrite[0xF9] = PCEWrite[0xFA] = PCEWrite[0xFB] = BaseRAMWrite_Mirrored;
for(int x = 0xf8; x < 0xfb; x++)
HuCPUFastMap[x] = BaseRAM - x * 8192;
PCERead[0xFF] = IORead;
}
MDFNMP_AddRAM(8192, 0xf8 * 8192, BaseRAM);
PCEWrite[0xFF] = IOWrite;
HuC6280_Init();
psg = new PCEFast_PSG(&sbuf[0], &sbuf[1]);
psg->SetVolume(1.0);
if(PCE_IsCD)
{
unsigned int cdpsgvolume = MDFN_GetSettingUI("pce_fast.cdpsgvolume");
if(cdpsgvolume != 100)
{
MDFN_printf(_("CD PSG Volume: %d%%\n"), cdpsgvolume);
}
psg->SetVolume(0.678 * cdpsgvolume / 100);
}
PCEINPUT_Init();
PCE_Power();
#if 0
MDFNGameInfo->LayerNames = "Background\0Sprites\0";
#endif
MDFNGameInfo->fps = (uint32)((double)7159090.90909090 / 455 / 263 * 65536 * 256);
return(1);
}
static bool TestMagicCD(std::vector<CDIF *> *CDInterfaces)
{
static const uint8 magic_test[0x20] = { 0x82, 0xB1, 0x82, 0xCC, 0x83, 0x76, 0x83, 0x8D, 0x83, 0x4F, 0x83, 0x89, 0x83, 0x80, 0x82, 0xCC,
0x92, 0x98, 0x8D, 0xEC, 0x8C, 0xA0, 0x82, 0xCD, 0x8A, 0x94, 0x8E, 0xAE, 0x89, 0xEF, 0x8E, 0xD0
};
uint8 sector_buffer[2048];
CDIF *cdiface = (*CDInterfaces)[0];
TOC toc;
bool ret = FALSE;
memset(sector_buffer, 0, sizeof(sector_buffer));
cdiface->ReadTOC(&toc);
for(int32 track = toc.first_track; track <= toc.last_track; track++)
{
if(toc.tracks[track].control & 0x4)
{
cdiface->ReadSector(sector_buffer, toc.tracks[track].lba, 1);
if(!memcmp((char*)sector_buffer, (char *)magic_test, 0x20))
ret = TRUE;
// PCE CD BIOS apparently only looks at the first data track.
break;
}
}
// If it's a PC-FX CD(Battle Heat), return false.
// This is very kludgy.
for(int32 track = toc.first_track; track <= toc.last_track; track++)
{
if(toc.tracks[track].control & 0x4)
{
cdiface->ReadSector(sector_buffer, toc.tracks[track].lba, 1);
if(!strncmp("PC-FX:Hu_CD-ROM", (char*)sector_buffer, strlen("PC-FX:Hu_CD-ROM")))
{
return(false);
}
}
}
// Now, test for the Games Express CD games. The GE BIOS seems to always look at sector 0x10, but only if the first track is a
// data track.
if(toc.first_track == 1 && (toc.tracks[1].control & 0x4))
{
if(cdiface->ReadSector(sector_buffer, 0x10, 1))
{
if(!memcmp((char *)sector_buffer + 0x8, "HACKER CD ROM SYSTEM", 0x14))
{
ret = TRUE;
}
}
}
return(ret);
}
static int LoadCD(std::vector<CDIF *> *CDInterfaces)
{
std::string bios_path = MDFN_MakeFName(MDFNMKF_FIRMWARE, 0, MDFN_GetSettingS("pce_fast.cdbios").c_str() );
LoadCommonPre();
if(!HuCLoadCD(bios_path.c_str()))
return(0);
PCECD_Drive_SetDisc(true, NULL, true);
PCECD_Drive_SetDisc(false, (*CDInterfaces)[0], true);
return(LoadCommon());
}
static void Cleanup_PCE(void)
{
HuC_Close();
VDC_Close();
if(psg)
delete psg;
psg = NULL;
}
static void CloseGame(void)
{
Cleanup_PCE();
}
static void Emulate(EmulateSpecStruct *espec)
{
INPUT_Frame();
MDFNMP_ApplyPeriodicCheats();
#if 0
{
static bool firstcat = true;
MDFN_PixelFormat nf;
nf.bpp = 16;
nf.colorspace = MDFN_COLORSPACE_RGB;
nf.Rshift = 11;
nf.Gshift = 5;
nf.Bshift = 0;
nf.Ashift = 16;
nf.Rprec = 5;
nf.Gprec = 6;
nf.Bprec = 5;
nf.Aprec = 8;
espec->surface->SetFormat(nf, false);
espec->VideoFormatChanged = firstcat;
firstcat = false;
}
#endif
if(espec->SoundFormatChanged)
{
for(int y = 0; y < 2; y++)
{
Blip_Buffer_set_sample_rate(&sbuf[y],
espec->SoundRate ? espec->SoundRate : 44100, 50);
Blip_Buffer_set_clock_rate(&sbuf[y], (long)(PCE_MASTER_CLOCK / 3));
Blip_Buffer_bass_freq(&sbuf[y], 10);
}
}
VDC_RunFrame(espec, false);
if(PCE_IsCD)
{
PCECD_Run(HuCPU.timestamp * 3);
}
psg->EndFrame(HuCPU.timestamp / pce_overclocked);
if(espec->SoundBuf)
{
for(int y = 0; y < 2; y++)
{
Blip_Buffer_end_frame(&sbuf[y], HuCPU.timestamp / pce_overclocked);
espec->SoundBufSize = Blip_Buffer_read_samples(&sbuf[y], espec->SoundBuf + y,
espec->SoundBufMaxSize);
}
}
espec->MasterCycles = HuCPU.timestamp * 3;
INPUT_FixTS();
HuC6280_ResetTS();
if(PCE_IsCD)
PCECD_ResetTS();
}
int StateAction(StateMem *sm, int load, int data_only)
{
SFORMAT StateRegs[] =
{
SFARRAY(BaseRAM, 8192),
SFVAR(PCEIODataBuffer),
SFEND
};
//for(int i = 8192; i < 32768; i++)
// if(BaseRAM[i] != 0xFF)
// printf("%d %02x\n", i, BaseRAM[i]);
int ret = MDFNSS_StateAction(sm, load, data_only, StateRegs, "MAIN");
ret &= HuC6280_StateAction(sm, load, data_only);
ret &= VDC_StateAction(sm, load, data_only);
ret &= psg->StateAction(sm, load, data_only);
ret &= INPUT_StateAction(sm, load, data_only);
ret &= HuC_StateAction(sm, load, data_only);
if(load)
{
}
return(ret);
}
void PCE_Power(void)
{
memset(BaseRAM, 0x00, sizeof(BaseRAM));
for(int i = 8192; i < 32768; i++)
BaseRAM[i] = 0xFF;
PCEIODataBuffer = 0xFF;
HuC6280_Power();
VDC_Power();
psg->Power(HuCPU.timestamp / pce_overclocked);
HuC_Power();
if(PCE_IsCD)
{
PCECD_Power(HuCPU.timestamp * 3);
}
}
static void DoSimpleCommand(int cmd)
{
switch(cmd)
{
case MDFN_MSC_RESET: PCE_Power(); break;
case MDFN_MSC_POWER: PCE_Power(); break;
}
}
static MDFNSetting PCESettings[] =
{
{ "pce_fast.slstart", MDFNSF_NOFLAGS, "First rendered scanline.", NULL, MDFNST_UINT, "4", "0", "239" },
{ "pce_fast.slend", MDFNSF_NOFLAGS, "Last rendered scanline.", NULL, MDFNST_UINT, "235", "0", "239" },
{ "pce_fast.mouse_sensitivity", MDFNSF_NOFLAGS, "Mouse sensitivity.", NULL, MDFNST_FLOAT, "0.50", NULL, NULL, NULL, PCEINPUT_SettingChanged },
{ "pce_fast.disable_softreset", MDFNSF_NOFLAGS, "If set, when RUN+SEL are pressed simultaneously, disable both buttons temporarily.", NULL, MDFNST_BOOL, "0", NULL, NULL, NULL, PCEINPUT_SettingChanged },
{ "pce_fast.arcadecard", MDFNSF_EMU_STATE | MDFNSF_UNTRUSTED_SAFE, "Enable Arcade Card emulation.", NULL, MDFNST_BOOL, "1" },
{ "pce_fast.ocmultiplier", MDFNSF_EMU_STATE | MDFNSF_UNTRUSTED_SAFE, "CPU overclock multiplier.", NULL, MDFNST_UINT, "1", "1", "100"},
{ "pce_fast.cdspeed", MDFNSF_EMU_STATE | MDFNSF_UNTRUSTED_SAFE, "CD-ROM data transfer speed multiplier.", NULL, MDFNST_UINT, "1", "1", "100" },
{ "pce_fast.nospritelimit", MDFNSF_NOFLAGS, "Remove 16-sprites-per-scanline hardware limit.", NULL, MDFNST_BOOL, "0" },
{ "pce_fast.hoverscan", MDFNSF_NOFLAGS, "Reduce 352 pixels width overscan.", NULL, MDFNST_UINT, "300", "300", "352" },
{ "pce_fast.cdbios", MDFNSF_EMU_STATE, "Path to the CD BIOS", NULL, MDFNST_STRING, "syscard3.pce" },
{ "pce_fast.adpcmlp", MDFNSF_NOFLAGS, "Enable dynamic ADPCM lowpass filter.", NULL, MDFNST_BOOL, "0" },
{ "pce_fast.cdpsgvolume", MDFNSF_NOFLAGS, "PSG volume when playing a CD game.", NULL, MDFNST_UINT, "100", "0", "200" },
{ "pce_fast.cddavolume", MDFNSF_NOFLAGS, "CD-DA volume.", NULL, MDFNST_UINT, "100", "0", "200" },
{ "pce_fast.adpcmvolume", MDFNSF_NOFLAGS, "ADPCM volume.", NULL, MDFNST_UINT, "100", "0", "200" },
{ NULL }
};
uint8 MemRead(uint32 addr)
{
return(PCERead[(addr / 8192) & 0xFF](addr));
}
static const FileExtensionSpecStruct KnownExtensions[] =
{
{ ".pce", "PC Engine ROM Image" },
{ NULL, NULL }
};
static const uint8 BRAM_Init_String[8] = { 'H', 'U', 'B', 'M', 0x00, 0x88, 0x10, 0x80 }; //"HUBM\x00\x88\x10\x80";
ArcadeCard *arcade_card = NULL;
static uint8 *HuCROM = NULL;
static bool IsPopulous;
bool PCE_IsCD;
uint8 SaveRAM[2048];
static DECLFW(ACPhysWrite)
{
arcade_card->PhysWrite(A, V);
}
static DECLFR(ACPhysRead)
{
return(arcade_card->PhysRead(A));
}
static DECLFR(SaveRAMRead)
{
if((!PCE_IsCD || PCECD_IsBRAMEnabled()) && (A & 8191) < 2048)
return(SaveRAM[A & 2047]);
else
return(0xFF);
}
static DECLFW(SaveRAMWrite)
{
if((!PCE_IsCD || PCECD_IsBRAMEnabled()) && (A & 8191) < 2048)
SaveRAM[A & 2047] = V;
}
static DECLFR(HuCRead)
{
return ROMSpace[A];
}
static DECLFW(HuCRAMWrite)
{
ROMSpace[A] = V;
}
static DECLFW(HuCRAMWriteCDSpecial) // Hyper Dyne Special hack
{
BaseRAM[0x2000 | (A & 0x1FFF)] = V;
ROMSpace[A] = V;
}
static uint8 HuCSF2Latch = 0;
static DECLFR(HuCSF2Read)
{
return(HuCROM[(A & 0x7FFFF) + 0x80000 + HuCSF2Latch * 0x80000 ]); // | (HuCSF2Latch << 19) ]);
}
static DECLFW(HuCSF2Write)
{
if((A & 0x1FFC) == 0x1FF0)
{
HuCSF2Latch = (A & 0x3);
}
}
static void Cleanup(void)
{
if(arcade_card)
delete arcade_card;
arcade_card = NULL;
if(PCE_IsCD)
PCECD_Close();
if(HuCROM)
free(HuCROM);
HuCROM = NULL;
}
int HuCLoad(const uint8 *data, uint32 len)
{
uint32 sf2_threshold = 2048 * 1024;
uint32 sf2_required_size = 2048 * 1024 + 512 * 1024;
uint32 m_len = (len + 8191)&~8191;
bool sf2_mapper = FALSE;
if(m_len >= sf2_threshold)
{
sf2_mapper = TRUE;
if(m_len != sf2_required_size)
m_len = sf2_required_size;
}
IsPopulous = 0;
PCE_IsCD = 0;
MDFN_printf(_("ROM: %dKiB\n"), (len + 1023) / 1024);
if(!(HuCROM = (uint8 *)malloc(m_len)))
{
return(0);
}
memset(HuCROM, 0xFF, m_len);
memcpy(HuCROM, data, (m_len < len) ? m_len : len);
memset(ROMSpace, 0xFF, 0x88 * 8192 + 8192);
if(m_len == 0x60000)
{
memcpy(ROMSpace + 0x00 * 8192, HuCROM, 0x20 * 8192);
memcpy(ROMSpace + 0x20 * 8192, HuCROM, 0x20 * 8192);
memcpy(ROMSpace + 0x40 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
memcpy(ROMSpace + 0x50 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
memcpy(ROMSpace + 0x60 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
memcpy(ROMSpace + 0x70 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
}
else if(m_len == 0x80000)
{
memcpy(ROMSpace + 0x00 * 8192, HuCROM, 0x40 * 8192);
memcpy(ROMSpace + 0x40 * 8192, HuCROM + 0x20 * 8192, 0x20 * 8192);
memcpy(ROMSpace + 0x60 * 8192, HuCROM + 0x20 * 8192, 0x20 * 8192);
}
else
{
memcpy(ROMSpace + 0x00 * 8192, HuCROM, (m_len < 1024 * 1024) ? m_len : 1024 * 1024);
}
for(int x = 0x00; x < 0x80; x++)
{
HuCPUFastMap[x] = ROMSpace;
PCERead[x] = HuCRead;
}
if(!memcmp(HuCROM + 0x1F26, "POPULOUS", strlen("POPULOUS")))
{
uint8 *PopRAM = ROMSpace + 0x40 * 8192;
memset(PopRAM, 0xFF, 32768);
IsPopulous = 1;
MDFN_printf("Populous\n");
for(int x = 0x40; x < 0x44; x++)
{
HuCPUFastMap[x] = &PopRAM[(x & 3) * 8192] - x * 8192;
PCERead[x] = HuCRead;
PCEWrite[x] = HuCRAMWrite;
}
MDFNMP_AddRAM(32768, 0x40 * 8192, PopRAM);
}
else
{
memset(SaveRAM, 0x00, 2048);
memcpy(SaveRAM, BRAM_Init_String, 8); // So users don't have to manually intialize the file cabinet
// in the CD BIOS screen.
PCEWrite[0xF7] = SaveRAMWrite;
PCERead[0xF7] = SaveRAMRead;
MDFNMP_AddRAM(2048, 0xF7 * 8192, SaveRAM);
}
// 0x1A558
//if(len >= 0x20000 && !memcmp(HuCROM + 0x1A558, "STREET FIGHTER#", strlen("STREET FIGHTER#")))
if(sf2_mapper)
{
for(int x = 0x40; x < 0x80; x++)
{
// FIXME: PCE_FAST
HuCPUFastMap[x] = NULL; // Make sure our reads go through our read function, and not a table lookup
PCERead[x] = HuCSF2Read;
}
PCEWrite[0] = HuCSF2Write;
MDFN_printf("Street Fighter 2 Mapper\n");
HuCSF2Latch = 0;
}
return(1);
}
bool IsBRAMUsed(void)
{
if(memcmp(SaveRAM, BRAM_Init_String, 8)) // HUBM string is modified/missing
return(1);
for(int x = 8; x < 2048; x++)
if(SaveRAM[x]) return(1);
return(0);
}
int HuCLoadCD(const char *bios_path)
{
static const FileExtensionSpecStruct KnownBIOSExtensions[] =
{
{ ".pce", "PC Engine ROM Image" },
{ ".bin", "PC Engine ROM Image" },
{ ".bios", "BIOS Image" },
{ NULL, NULL }
};
MDFNFILE *fp = file_open(bios_path);
if(!fp)
return(0);
memset(ROMSpace, 0xFF, 262144);
memcpy(ROMSpace, GET_FDATA_PTR(fp) + (GET_FSIZE_PTR(fp) & 512), ((GET_FSIZE_PTR(fp) & ~512) > 262144) ? 262144 : (GET_FSIZE_PTR(fp) &~ 512) );
if (fp)
file_close(fp);
fp = NULL;
PCE_IsCD = 1;
PCE_InitCD();
MDFN_printf(_("Arcade Card Emulation: %s\n"), PCE_ACEnabled ? _("Enabled") : _("Disabled"));
for(int x = 0; x < 0x40; x++)
{
HuCPUFastMap[x] = ROMSpace;
PCERead[x] = HuCRead;
}
for(int x = 0x68; x < 0x88; x++)
{
HuCPUFastMap[x] = ROMSpace;
PCERead[x] = HuCRead;
PCEWrite[x] = HuCRAMWrite;
}
PCEWrite[0x80] = HuCRAMWriteCDSpecial; // Hyper Dyne Special hack
MDFNMP_AddRAM(262144, 0x68 * 8192, ROMSpace + 0x68 * 8192);
if(PCE_ACEnabled)
{
if (!(arcade_card = new ArcadeCard()))
{
MDFN_PrintError(_("Error creating %s object.\n"), "ArcadeCard");
Cleanup();
return(0);
}
for(int x = 0x40; x < 0x44; x++)
{
HuCPUFastMap[x] = NULL;
PCERead[x] = ACPhysRead;
PCEWrite[x] = ACPhysWrite;
}
}
memset(SaveRAM, 0x00, 2048);
memcpy(SaveRAM, BRAM_Init_String, 8); // So users don't have to manually intialize the file cabinet
// in the CD BIOS screen.
PCEWrite[0xF7] = SaveRAMWrite;
PCERead[0xF7] = SaveRAMRead;
MDFNMP_AddRAM(2048, 0xF7 * 8192, SaveRAM);
return(1);
}
int HuC_StateAction(StateMem *sm, int load, int data_only)
{
SFORMAT StateRegs[] =
{
SFARRAY(ROMSpace + 0x40 * 8192, IsPopulous ? 32768 : 0),
SFARRAY(SaveRAM, IsPopulous ? 0 : 2048),
SFARRAY(ROMSpace + 0x68 * 8192, PCE_IsCD ? 262144 : 0),
SFVAR(HuCSF2Latch),
SFEND
};
int ret = MDFNSS_StateAction(sm, load, data_only, StateRegs, "HuC");
if(load)
HuCSF2Latch &= 0x3;
if(PCE_IsCD)
{
ret &= PCECD_StateAction(sm, load, data_only);
if(arcade_card)
ret &= arcade_card->StateAction(sm, load, data_only);
}
return(ret);
}
void HuC_Close(void)
{
Cleanup();
}
void HuC_Power(void)
{
if(PCE_IsCD)
memset(ROMSpace + 0x68 * 8192, 0x00, 262144);
if(arcade_card)
arcade_card->Power();
}
MDFNGI EmulatedPCE_Fast =
{
PCESettings,
MDFN_MASTERCLOCK_FIXED(PCE_MASTER_CLOCK),
0,
true, // Multires possible?
0, // lcm_width
0, // lcm_height
NULL, // Dummy
MEDNAFEN_CORE_GEOMETRY_BASE_W, // Nominal width
MEDNAFEN_CORE_GEOMETRY_BASE_H, // Nominal height
FB_WIDTH, // Framebuffer width
FB_HEIGHT, // Framebuffer height
2, // Number of output sound channels
};
static bool ReadM3U(std::vector<std::string> &file_list, std::string path, unsigned depth = 0)
{
std::string dir_path;
char linebuf[2048];
FILE *fp = fopen(path.c_str(), "rb");
if (!fp)
return false;
MDFN_GetFilePathComponents(path, &dir_path);
while(fgets(linebuf, sizeof(linebuf), fp))
{
std::string efp;
if(linebuf[0] == '#')
continue;
string_trim_whitespace_right(linebuf);
if(linebuf[0] == 0)
continue;
efp = MDFN_EvalFIP(dir_path, std::string(linebuf));
if(efp.size() >= 4 && efp.substr(efp.size() - 4) == ".m3u")
{
if(efp == path)
{
log_cb(RETRO_LOG_ERROR, "M3U at \"%s\" references self.\n", efp.c_str());
fclose(fp);
return false;
}
if(depth == 99)
{
log_cb(RETRO_LOG_ERROR, "M3U load recursion too deep!\n");
fclose(fp);
return false;
}
ReadM3U(file_list, efp, depth++);
}
else
file_list.push_back(efp);
}
fclose(fp);
return true;
}
static std::vector<CDIF *> CDInterfaces; // FIXME: Cleanup on error out.
// TODO: LoadCommon()
static MDFNGI *MDFNI_LoadCD(const char *devicename)
{
bool ret = false;
log_cb(RETRO_LOG_INFO, "Loading %s...\n\n", devicename);
if(devicename && strlen(devicename) > 4 && !strcasecmp(devicename + strlen(devicename) - 4, ".m3u"))
{
std::vector<std::string> file_list;
if (ReadM3U(file_list, devicename))
ret = true;
for(unsigned i = 0; i < file_list.size(); i++)
{
CDIF *cdif = CDIF_Open(file_list[i].c_str(), false);
CDInterfaces.push_back(cdif);
}
}
else
{
CDIF *cdif = CDIF_Open(devicename, false);
if (cdif)
{
ret = true;
CDInterfaces.push_back(cdif);
}
}
if (!ret)
{
log_cb(RETRO_LOG_ERROR, "Error opening CD.\n");
return NULL;
}
/* Print out a track list for all discs. */
MDFN_indent(1);
for(unsigned i = 0; i < CDInterfaces.size(); i++)
{
TOC toc;
CDInterfaces[i]->ReadTOC(&toc);
MDFN_printf(_("CD %d Layout:\n"), i + 1);
MDFN_indent(1);
for(int32 track = toc.first_track; track <= toc.last_track; track++)
{
MDFN_printf(_("Track %2d, LBA: %6d %s\n"), track, toc.tracks[track].lba, (toc.tracks[track].control & 0x4) ? "DATA" : "AUDIO");
}
MDFN_printf("Leadout: %6d\n", toc.tracks[100].lba);
MDFN_indent(-1);
MDFN_printf("\n");
}
MDFN_indent(-1);
MDFN_printf("Using module: pce_fast.\n");
if(!(LoadCD(&CDInterfaces)))
{
for(unsigned i = 0; i < CDInterfaces.size(); i++)
delete CDInterfaces[i];
CDInterfaces.clear();
MDFNGameInfo = NULL;
return(0);
}
//MDFNI_SetLayerEnableMask(~0ULL);
MDFN_LoadGameCheats(NULL);
MDFNMP_InstallReadPatches();
return(MDFNGameInfo);
}
static MDFNGI *MDFNI_LoadGame(const char *name)
{
std::vector<FileExtensionSpecStruct> valid_iae;
MDFNFILE *GameFile = NULL;
MDFNGameInfo = &EmulatedPCE_Fast;
if(strlen(name) > 4 && (!strcasecmp(name + strlen(name) - 4, ".cue") || !strcasecmp(name + strlen(name) - 4, ".ccd") || !strcasecmp(name + strlen(name) - 4, ".chd") || !strcasecmp(name + strlen(name) - 4, ".toc") || !strcasecmp(name + strlen(name) - 4, ".m3u")))
return(MDFNI_LoadCD(name));
MDFN_printf(_("Loading %s...\n"),name);
MDFN_indent(1);
// Construct a NULL-delimited list of known file extensions for MDFN_fopen()
const FileExtensionSpecStruct *curexts = KnownExtensions;
while(curexts->extension && curexts->description)
{
valid_iae.push_back(*curexts);
curexts++;
}
GameFile = file_open(name);
if(!GameFile)
goto error;
MDFN_printf(_("Using module: pce_fast.\n\n"));
MDFN_indent(1);
//
// Load per-game settings
//
// Maybe we should make a "pgcfg" subdir, and automatically load all files in it?
// End load per-game settings
//
if(Load(name, GameFile) <= 0)
goto error;
MDFN_LoadGameCheats(NULL);
MDFNMP_InstallReadPatches();
MDFN_indent(-2);
return(MDFNGameInfo);
error:
if (GameFile)
file_close(GameFile);
MDFNGameInfo = NULL;
return NULL;
}
static int curindent = 0;
void MDFN_indent(int indent)
{
curindent += indent;
}
static uint8 lastchar = 0;
void MDFN_printf(const char *format, ...)
{
char *format_temp;
char *temp;
unsigned int x, newlen;
va_list ap;
va_start(ap,format);
// First, determine how large our format_temp buffer needs to be.
uint8 lastchar_backup = lastchar; // Save lastchar!
for(newlen=x=0;x<strlen(format);x++)
{
if(lastchar == '\n' && format[x] != '\n')
{
int y;
for(y=0;y<curindent;y++)
newlen++;
}
newlen++;
lastchar = format[x];
}
format_temp = (char *)malloc(newlen + 1); // Length + NULL character, duh
// Now, construct our format_temp string
lastchar = lastchar_backup; // Restore lastchar
for(newlen=x=0;x<strlen(format);x++)
{
if(lastchar == '\n' && format[x] != '\n')
{
int y;
for(y=0;y<curindent;y++)
format_temp[newlen++] = ' ';
}
format_temp[newlen++] = format[x];
lastchar = format[x];
}
format_temp[newlen] = 0;
temp = new char[4096];
vsnprintf(temp, 4096, format_temp, ap);
free(format_temp);
MDFND_Message(temp);
free(temp);
va_end(ap);
}
void MDFN_PrintError(const char *format, ...)
{
char *temp;
va_list ap;
va_start(ap, format);
temp = new char[4096];
vsnprintf(temp, 4096, format, ap);
MDFND_PrintError(temp);
free(temp);
va_end(ap);
}
void MDFN_DebugPrintReal(const char *file, const int line, const char *format, ...)
{
char *temp;
va_list ap;
va_start(ap, format);
temp = new char[4096];
vsnprintf(temp, 4096, format, ap);
fprintf(stderr, "%s:%d %s\n", file, line, temp);
free(temp);
va_end(ap);
}
static MDFNGI *game;
struct retro_perf_callback perf_cb;
retro_get_cpu_features_t perf_get_cpu_features_cb = NULL;
retro_log_printf_t log_cb;
static retro_video_refresh_t video_cb;
static retro_audio_sample_t audio_cb;
static retro_audio_sample_batch_t audio_batch_cb;
static retro_environment_t environ_cb;
static retro_input_poll_t input_poll_cb;
static retro_input_state_t input_state_cb;
static double last_sound_rate;
static MDFN_Surface *surf;
static bool failed_init;
std::string retro_base_directory;
std::string retro_base_name;
std::string retro_save_directory;
static void set_basename(const char *path)
{
const char *base = strrchr(path, '/');
if (!base)
base = strrchr(path, '\\');
if (base)
retro_base_name = base + 1;
else
retro_base_name = path;
retro_base_name = retro_base_name.substr(0, retro_base_name.find_last_of('.'));
}
#include "mednafen/pce_fast/pcecd.h"
static void check_system_specs(void)
{
unsigned level = 5;
environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
}
void retro_init(void)
{
struct retro_log_callback log;
if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
log_cb = log.log;
else
log_cb = NULL;
CDUtility_Init();
const char *dir = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
{
retro_base_directory = dir;
// Make sure that we don't have any lingering slashes, etc, as they break Windows.
size_t last = retro_base_directory.find_last_not_of("/\\");
if (last != std::string::npos)
last++;
retro_base_directory = retro_base_directory.substr(0, last);
}
else
{
/* TODO: Add proper fallback */
if (log_cb)
log_cb(RETRO_LOG_WARN, "System directory is not defined. Fallback on using same dir as ROM for system directory later ...\n");
failed_init = true;
}
if (environ_cb(RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY, &dir) && dir)
{
// If save directory is defined use it, otherwise use system directory
retro_save_directory = *dir ? dir : retro_base_directory;
// Make sure that we don't have any lingering slashes, etc, as they break Windows.
size_t last = retro_save_directory.find_last_not_of("/\\");
if (last != std::string::npos)
last++;
retro_save_directory = retro_save_directory.substr(0, last);
}
else
{
/* TODO: Add proper fallback */
if (log_cb)
log_cb(RETRO_LOG_WARN, "Save directory is not defined. Fallback on using SYSTEM directory ...\n");
retro_save_directory = retro_base_directory;
}
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");
if (environ_cb(RETRO_ENVIRONMENT_GET_PERF_INTERFACE, &perf_cb))
perf_get_cpu_features_cb = perf_cb.get_cpu_features;
else
perf_get_cpu_features_cb = NULL;
bool yes = true;
environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &yes);
setting_initial_scanline = 0;
setting_last_scanline = 242;
check_system_specs();
}
void retro_reset(void)
{
DoSimpleCommand(MDFN_MSC_RESET);
}
bool retro_load_game_special(unsigned, const struct retro_game_info *, size_t)
{
return false;
}
static void set_volume (uint32_t *ptr, unsigned number)
{
switch(number)
{
default:
*ptr = number;
break;
}
}
#define MAX_PLAYERS 5
#define MAX_BUTTONS 13
static uint8_t input_buf[MAX_PLAYERS][2] = {0};
// Array to keep track of whether a given player's button is turbo
static int turbo_enable[MAX_PLAYERS][MAX_BUTTONS] = {};
// Array to keep track of each buttons turbo status
static int turbo_counter[MAX_PLAYERS][MAX_BUTTONS] = {};
// The number of frames between each firing of a turbo button
static int Turbo_Delay;
static int Turbo_Toggling = 1;
static int turbo_toggle_down[MAX_PLAYERS][MAX_BUTTONS] = {};
static void check_variables(void)
{
struct retro_variable var = {0};
var.key = "pce_fast_cdimagecache";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
bool cdimage_cache = true;
if (strcmp(var.value, "enabled") == 0)
cdimage_cache = true;
else if (strcmp(var.value, "disabled") == 0)
cdimage_cache = false;
if (cdimage_cache != old_cdimagecache)
old_cdimagecache = cdimage_cache;
}
var.key = "pce_fast_cdbios";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "System Card 3") == 0)
setting_pce_fast_cdbios = "syscard3.pce";
else if (strcmp(var.value, "System Card 2") == 0)
setting_pce_fast_cdbios = "syscard2.pce";
else if (strcmp(var.value, "System Card 1") == 0)
setting_pce_fast_cdbios = "syscard1.pce";
else if (strcmp(var.value, "Games Express") == 0)
setting_pce_fast_cdbios = "gexpress.pce";
}
var.key = "pce_nospritelimit";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "disabled") == 0)
setting_pce_fast_nospritelimit = 0;
else if (strcmp(var.value, "enabled") == 0)
setting_pce_fast_nospritelimit = 1;
}
var.key = "pce_ocmultiplier";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_pce_overclocked = atoi(var.value);
}
var.key = "pce_hoverscan";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_pce_hoverscan = atoi(var.value);
}
var.key = "pce_initial_scanline";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_initial_scanline = atoi(var.value);
}
var.key = "pce_last_scanline";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_last_scanline = atoi(var.value);
}
bool do_cdsettings = false;
var.key = "pce_cddavolume";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_cddavolume = atoi(var.value);
}
var.key = "pce_adpcmvolume";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_adpcmvolume = atoi(var.value);
}
var.key = "pce_cdpsgvolume";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_cdpsgvolume = atoi(var.value);
}
var.key = "pce_cdspeed";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_cdspeed = atoi(var.value);
}
if (do_cdsettings)
{
PCECD_Settings settings = {0};
settings.CDDA_Volume = (double)setting_pce_fast_cddavolume / 100;
settings.CD_Speed = setting_pce_fast_cdspeed;
settings.ADPCM_Volume = (double)setting_pce_fast_adpcmvolume / 100;
if (PCECD_SetSettings(&settings) && log_cb)
log_cb(RETRO_LOG_INFO, "PCE CD Audio settings changed.\n");
}
// Set Turbo_Toggling
var.key = "Turbo_Toggling";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
Turbo_Toggling = 1;
else
Turbo_Toggling = 0;
}
// Set TURBO_DELAY
var.key = "pce_Turbo_Delay";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "Fast") == 0)
Turbo_Delay = 3;
else if (strcmp(var.value, "Medium") == 0)
Turbo_Delay = 8;
else if (strcmp(var.value, "Slow") == 0)
Turbo_Delay = 15;
}
// Enable turbo for each player's I+II buttons
var.key = "pce_p0_turbo_I_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[0][0] = 1;
else
turbo_enable[0][0] = 0;
}
var.key = "pce_p0_turbo_II_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[0][1] = 1;
else
turbo_enable[0][1] = 0;
}
var.key = "pce_p1_turbo_I_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[1][0] = 1;
else
turbo_enable[1][0] = 0;
}
var.key = "pce_p1_turbo_II_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[1][1] = 1;
else
turbo_enable[1][1] = 0;
}
var.key = "pce_p2_turbo_I_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[2][0] = 1;
else
turbo_enable[2][0] = 0;
}
var.key = "pce_p2_turbo_II_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[2][1] = 1;
else
turbo_enable[2][1] = 0;
}
var.key = "pce_p3_turbo_I_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[3][0] = 1;
else
turbo_enable[3][0] = 0;
}
var.key = "pce_p3_turbo_II_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[3][1] = 1;
else
turbo_enable[3][1] = 0;
}
var.key = "pce_p4_turbo_I_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[4][0] = 1;
else
turbo_enable[4][0] = 0;
}
var.key = "pce_p4_turbo_II_enable";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_enable[4][1] = 1;
else
turbo_enable[4][1] = 0;
}
}
bool retro_load_game(const struct retro_game_info *info)
{
struct retro_input_descriptor desc[] = {
#define button_ids(INDEX) \
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "II" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "I" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "IV" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "III" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "V" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "VI" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2, "Mode Switch" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Run" },
button_ids(0)
button_ids(1)
button_ids(2)
button_ids(3)
button_ids(4)
{ 0 },
};
if (!info || failed_init)
return false;
environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
set_basename(info->path);
check_variables();
game = MDFNI_LoadGame(info->path);
if (!game)
return false;
surf = (MDFN_Surface*)calloc(1, sizeof(*surf));
if (!surf)
return false;
surf->width = FB_WIDTH;
surf->height = FB_HEIGHT;
surf->pitch = FB_WIDTH;
surf->pixels = (uint16_t*) calloc(2, FB_WIDTH * FB_HEIGHT);
if (!surf->pixels)
{
free(surf);
return false;
}
// Possible endian bug ...
for (unsigned i = 0; i < MAX_PLAYERS; i++)
PCEINPUT_SetInput(i, "gamepad", &input_buf[i][0]);
VDC_SetPixelFormat();
return game;
}
void retro_unload_game(void)
{
if(!MDFNGameInfo)
return;
MDFN_FlushGameCheats(0);
CloseGame();
MDFNMP_Kill();
MDFNGameInfo = NULL;
for(unsigned i = 0; i < CDInterfaces.size(); i++)
delete CDInterfaces[i];
CDInterfaces.clear();
}
static void update_input(void)
{
static int turbo_map[] = { -1,-1,-1,-1,-1,-1,-1,-1,1,0,-1,-1,-1 };
static unsigned map[] = {
RETRO_DEVICE_ID_JOYPAD_A,
RETRO_DEVICE_ID_JOYPAD_B,
RETRO_DEVICE_ID_JOYPAD_SELECT,
RETRO_DEVICE_ID_JOYPAD_START,
RETRO_DEVICE_ID_JOYPAD_UP,
RETRO_DEVICE_ID_JOYPAD_RIGHT,
RETRO_DEVICE_ID_JOYPAD_DOWN,
RETRO_DEVICE_ID_JOYPAD_LEFT,
RETRO_DEVICE_ID_JOYPAD_Y,
RETRO_DEVICE_ID_JOYPAD_X,
RETRO_DEVICE_ID_JOYPAD_L,
RETRO_DEVICE_ID_JOYPAD_R,
RETRO_DEVICE_ID_JOYPAD_L2
};
for (unsigned j = 0; j < MAX_PLAYERS; j++)
{
uint16_t input_state = 0;
for (unsigned i = 0; i < MAX_BUTTONS; i++)
{
if (turbo_enable[j][i] == 1) //Check whether a given button is turbo-capable
{
if (turbo_counter[j][i] == (Turbo_Delay+1)) //Turbo buttons only fire when their counter exceeds the turbo delay
{
input_state |= input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, map[i]) ? (1 << i) : 0;
}
else
{
turbo_counter[j][i]++; //Otherwise, their counter is incremented by 1
}
if (turbo_counter[j][i] > (Turbo_Delay)) //When the counter exceeds turbo delay, fire and return to zero
{
input_state |= input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, map[i]) ? (1 << i) : 0;
turbo_counter[j][i] = 0;
}
}
else if (turbo_map[i] != -1 && Turbo_Toggling && !AVPad6Enabled[j])
{
if (input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, map[i]))
{
if (turbo_toggle_down[j][i] == 0)
{
turbo_toggle_down[j][i] = 1;
turbo_enable[j][turbo_map[i]] = turbo_enable[j][turbo_map[i]] ^ 1;
MDFN_DispMessage("Pad %i Button %s Turbo %s", j + 1, i == 9 ? "I" : "II", turbo_enable[j][turbo_map[i]] ? "ON" : "OFF" );
}
}
else turbo_toggle_down[j][i] = 0;
}
else input_state |= input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, map[i]) ? (1 << i) : 0;
}
// Input data must be little endian.
input_buf[j][0] = (input_state >> 0) & 0xff;
input_buf[j][1] = (input_state >> 8) & 0xff;
}
}
static uint64_t video_frames, audio_frames;
void update_geometry(unsigned width, unsigned height)
{
struct retro_system_av_info system_av_info;
system_av_info.geometry.base_width = width;
system_av_info.geometry.base_height = height;
system_av_info.geometry.max_width = MEDNAFEN_CORE_GEOMETRY_MAX_W;
system_av_info.geometry.max_height = MEDNAFEN_CORE_GEOMETRY_MAX_H;
system_av_info.geometry.aspect_ratio = MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO;
environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &system_av_info);
}
void retro_run(void)
{
MDFNGI *curgame = (MDFNGI*)game;
input_poll_cb();
update_input();
static int16_t sound_buf[0x10000];
static int32_t rects[FB_HEIGHT];
static unsigned width, height;
bool resolution_changed = false;
rects[0] = ~0;
EmulateSpecStruct spec = {0};
spec.surface = surf;
spec.SoundRate = 44100;
spec.SoundBuf = sound_buf;
spec.LineWidths = rects;
spec.SoundBufMaxSize = sizeof(sound_buf) / 2;
spec.SoundVolume = 1.0;
spec.soundmultiplier = 1.0;
spec.SoundBufSize = 0;
spec.VideoFormatChanged = false;
spec.SoundFormatChanged = false;
if (spec.SoundRate != last_sound_rate)
{
spec.SoundFormatChanged = true;
last_sound_rate = spec.SoundRate;
}
Emulate(&spec);
int16 *const SoundBuf = spec.SoundBuf + spec.SoundBufSizeALMS * curgame->soundchan;
int32 SoundBufSize = spec.SoundBufSize - spec.SoundBufSizeALMS;
const int32 SoundBufMaxSize = spec.SoundBufMaxSize - spec.SoundBufSizeALMS;
spec.SoundBufSize = spec.SoundBufSizeALMS + SoundBufSize;
if (width != spec.DisplayRect.w || height != spec.DisplayRect.h)
resolution_changed = true;
width = spec.DisplayRect.w;
height = spec.DisplayRect.h;
video_cb(surf->pixels + surf->pitch * spec.DisplayRect.y, width, height, FB_WIDTH * 2);
audio_batch_cb(spec.SoundBuf, spec.SoundBufSize);
bool updated = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
{
check_variables();
if(PCE_IsCD){
psg->SetVolume(0.678 * setting_pce_fast_cdpsgvolume / 100);
}
update_geometry(width, height);
}
if (resolution_changed)
update_geometry(width, height);
video_frames++;
audio_frames += spec.SoundBufSize;
}
void retro_get_system_info(struct retro_system_info *info)
{
memset(info, 0, sizeof(*info));
info->library_name = MEDNAFEN_CORE_NAME;
#ifndef GIT_VERSION
#define GIT_VERSION ""
#endif
info->library_version = MEDNAFEN_CORE_VERSION GIT_VERSION;
info->need_fullpath = true;
info->valid_extensions = MEDNAFEN_CORE_EXTENSIONS;
info->block_extract = false;
}
void retro_get_system_av_info(struct retro_system_av_info *info)
{
memset(info, 0, sizeof(*info));
info->timing.fps = MEDNAFEN_CORE_TIMING_FPS;
info->timing.sample_rate = 44100;
info->geometry.base_width = MEDNAFEN_CORE_GEOMETRY_BASE_W;
info->geometry.base_height = MEDNAFEN_CORE_GEOMETRY_BASE_H;
info->geometry.max_width = MEDNAFEN_CORE_GEOMETRY_MAX_W;
info->geometry.max_height = MEDNAFEN_CORE_GEOMETRY_MAX_H;
info->geometry.aspect_ratio = MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO;
}
void retro_deinit()
{
if (surf)
free(surf);
surf = NULL;
if (log_cb)
{
log_cb(RETRO_LOG_INFO, "[%s]: Samples / Frame: %.5f\n",
MEDNAFEN_CORE_NAME, (double)audio_frames / video_frames);
log_cb(RETRO_LOG_INFO, "[%s]: Estimated FPS: %.5f\n",
MEDNAFEN_CORE_NAME, (double)video_frames * 44100 / audio_frames);
}
}
unsigned retro_get_region(void)
{
return RETRO_REGION_NTSC; // FIXME: Regions for other cores.
}
unsigned retro_api_version(void)
{
return RETRO_API_VERSION;
}
void retro_set_controller_port_device(unsigned in_port, unsigned device)
{
switch(device)
{
case RETRO_DEVICE_JOYPAD:
PCEINPUT_SetInput(in_port, "gamepad", &input_buf[in_port][0]);
break;
case RETRO_DEVICE_MOUSE:
PCEINPUT_SetInput(in_port, "mouse", &input_buf[in_port][0]);
break;
}
}
void retro_set_environment(retro_environment_t cb)
{
environ_cb = cb;
static const struct retro_variable vars[] = {
{ "pce_fast_cdimagecache", "CD Image Cache (Restart); disabled|enabled" },
{ "pce_fast_cdbios", "CD Bios (Restart); System Card 3|Games Express|System Card 1|System Card 2" },
{ "pce_nospritelimit", "No Sprite Limit (Restart); disabled|enabled" },
{ "pce_ocmultiplier", "CPU Overclock Multiplier (Restart); 1|2|3|4|5|6|7|8|9|10|20|30|40|50" },
{ "pce_hoverscan", "Horizontal Overscan (352 Width Mode Only); 352|300|302|304|306|308|310|312|314|316|318|320|322|324|326|328|330|332|334|336|338|340|342|344|346|348|350" },
{ "pce_initial_scanline", "Initial scanline; 3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|32|33|34|35|36|37|38|39|40|0|1|2" },
{ "pce_last_scanline", "Last scanline; 242|208|209|210|211|212|213|214|215|216|217|218|219|220|221|222|223|224|225|226|227|228|229|230|231|232|233|234|235|236|237|238|239|240|241" },
{ "pce_cddavolume", "(CD) CDDA Volume %; 100|110|120|130|140|150|160|170|180|190|200|0|10|20|30|40|50|60|70|80|90" },
{ "pce_adpcmvolume", "(CD) ADPCM Volume %; 100|110|120|130|140|150|160|170|180|190|200|0|10|20|30|40|50|60|70|80|90" },
{ "pce_cdpsgvolume", "(CD) CD PSG Volume %; 100|110|120|130|140|150|160|170|180|190|200|0|10|20|30|40|50|60|70|80|90" },
{ "pce_cdspeed", "(CD) CD Speed; 1|2|4|8" },
{ "pce_Turbo_Delay", "Turbo Delay; Fast|Medium|Slow" },
{ "pce_p0_turbo_I_enable", "P1 Turbo I; disabled|enabled" },
{ "pce_p0_turbo_II_enable", "P1 Turbo II; disabled|enabled" },
{ "pce_p1_turbo_I_enable", "P2 Turbo I; disabled|enabled" },
{ "pce_p1_turbo_II_enable", "P2 Turbo II; disabled|enabled" },
{ "pce_p2_turbo_I_enable", "P3 Turbo I; disabled|enabled" },
{ "pce_p2_turbo_II_enable", "P3 Turbo II; disabled|enabled" },
{ "pce_p3_turbo_I_enable", "P4 Turbo I; disabled|enabled" },
{ "pce_p3_turbo_II_enable", "P4 Turbo II; disabled|enabled" },
{ "pce_p4_turbo_I_enable", "P5 Turbo I; disabled|enabled" },
{ "pce_p4_turbo_II_enable", "P5 Turbo II; disabled|enabled" },
{ NULL, NULL },
};
static const struct retro_controller_description pads[] = {
{ "PCE Joypad", RETRO_DEVICE_JOYPAD },
{ "Mouse", RETRO_DEVICE_MOUSE },
};
static const struct retro_controller_info ports[] = {
{ pads, 2 },
{ pads, 2 },
{ 0 },
};
cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
environ_cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports);
}
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)
{
input_poll_cb = cb;
}
void retro_set_input_state(retro_input_state_t cb)
{
input_state_cb = cb;
}
void retro_set_video_refresh(retro_video_refresh_t cb)
{
video_cb = cb;
}
static size_t serialize_size;
size_t retro_serialize_size(void)
{
StateMem st;
memset(&st, 0, sizeof(st));
if (!MDFNSS_SaveSM(&st, 0, 0, NULL, NULL, NULL))
return 0;
free(st.data);
return serialize_size = st.len;
}
bool retro_serialize(void *data, size_t size)
{
StateMem st;
memset(&st, 0, sizeof(st));
st.data = (uint8_t*)data;
st.malloced = size;
return MDFNSS_SaveSM(&st, 0, 0, NULL, NULL, NULL);
}
bool retro_unserialize(const void *data, size_t size)
{
StateMem st;
memset(&st, 0, sizeof(st));
st.data = (uint8_t*)data;
st.len = size;
return MDFNSS_LoadSM(&st, 0, 0);
}
void *retro_get_memory_data(unsigned type)
{
switch (type)
{
case RETRO_MEMORY_SAVE_RAM:
if (IsPopulous)
return (uint8_t*)(ROMSpace + 0x40 * 8192);
return (uint8_t*)SaveRAM;
case RETRO_MEMORY_SYSTEM_RAM:
return BaseRAM;
default:
break;
}
return NULL;
}
size_t retro_get_memory_size(unsigned type)
{
switch (type)
{
case RETRO_MEMORY_SAVE_RAM:
if (IsPopulous)
return 32768;
return 2048;
case RETRO_MEMORY_SYSTEM_RAM:
return sizeof(BaseRAM) - 8192;
default:
break;
}
return 0;
}
void retro_cheat_reset(void)
{}
void retro_cheat_set(unsigned, bool, const char *)
{}
#ifdef _WIN32
static void sanitize_path(std::string &path)
{
size_t size = path.size();
for (size_t i = 0; i < size; i++)
if (path[i] == '/')
path[i] = '\\';
}
#endif
// Use a simpler approach to make sure that things go right for libretro.
std::string MDFN_MakeFName(MakeFName_Type type, int id1, const char *cd1)
{
char slash;
#ifdef _WIN32
slash = '\\';
#else
slash = '/';
#endif
std::string ret;
switch (type)
{
case MDFNMKF_SAV:
ret = retro_save_directory +slash + retro_base_name +
std::string(".") + std::string(cd1);
break;
case MDFNMKF_FIRMWARE:
ret = retro_base_directory + slash + std::string(cd1);
#ifdef _WIN32
sanitize_path(ret); // Because Windows path handling is mongoloid.
#endif
break;
default:
break;
}
if (log_cb)
log_cb(RETRO_LOG_INFO, "MDFN_MakeFName: %s\n", ret.c_str());
return ret;
}
void MDFND_Message(const char *str)
{
if (log_cb)
log_cb(RETRO_LOG_INFO, "%s\n", str);
}
void MDFND_PrintError(const char* err)
{
if (log_cb)
log_cb(RETRO_LOG_ERROR, "%s\n", err);
}
/* forward declarations */
extern void MDFND_DispMessage(unsigned char *str);
void MDFND_DispMessage(unsigned char *str)
{
const char *strc = (const char*)str;
struct retro_message msg =
{
strc,
180
};
environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg);
}
void MDFN_DispMessage(const char *format, ...)
{
struct retro_message msg;
va_list ap;
va_start(ap,format);
char *str = new char[4096];
const char *strc = NULL;
vsnprintf(str, 4096, format,ap);
va_end(ap);
strc = str;
msg.frames = 180;
msg.msg = strc;
environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg);
}
void MDFN_ResetMessages(void)
{
}
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