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libretro.cpp
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libretro.cpp
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#include <stdarg.h>
#include <string.h>
#include <math.h>
#ifdef _MSC_VER
#include <compat/msvc.h>
#endif
#include <string/stdstring.h>
#include <retro_timers.h>
#include <streams/file_stream.h>
#include "mednafen/mednafen.h"
#include "mednafen/mempatcher.h"
#include "mednafen/git.h"
#include "mednafen/general.h"
#include "mednafen/md5.h"
#ifdef NEED_DEINTERLACER
#include "mednafen/video/Deinterlacer.h"
#endif
#include "libretro.h"
#include <rthreads/rthreads.h>
#include "mednafen/pcfx/pcfx.h"
#include "mednafen/pcfx/soundbox.h"
#include "mednafen/pcfx/input.h"
#include "mednafen/pcfx/king.h"
#include "mednafen/pcfx/timer.h"
#include "mednafen/pcfx/interrupt.h"
#include "mednafen/pcfx/rainbow.h"
#include "mednafen/pcfx/huc6273.h"
#include "mednafen/cdrom/scsicd.h"
#include "mednafen/mempatcher.h"
#include "mednafen/cdrom/cdromif.h"
#include "mednafen/md5.h"
#include "mednafen/clamp.h"
#include "mednafen/state_helpers.h"
#include "libretro_core_options.h"
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 MDFN_PixelFormat last_pixel_format;
static MDFN_Surface surf;
static bool failed_init;
static std::string retro_base_directory;
static std::string retro_save_directory;
static bool cd_eject_state;
static bool libretro_supports_bitmasks = false;
static bool libretro_supports_option_categories = false;
typedef struct
{
unsigned initial_index;
std::string initial_path;
std::vector<std::string> image_paths;
std::vector<std::string> image_labels;
} disk_control_ext_info_t;
static disk_control_ext_info_t disk_control_ext_info;
/* 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
*/
/* FIXME: soundbox, vce, vdc, rainbow, and king store wait states should be 4, not 2, but V810 has write buffers which can mask wait state penalties.
This is a hack to somewhat address the issue, but to really fix it, we need to handle write buffer emulation in the V810 emulation core itself.
*/
static std::vector<CDIF*> *cdifs = NULL;
static bool CD_TrayOpen;
static int CD_SelectedDisc; // -1 for no disc
V810 PCFX_V810;
static uint8 *BIOSROM = NULL; // 1MB
static uint8 *RAM = NULL; // 2MB
static uint32 RAM_LPA; // Last page access
static const int RAM_PageSize = 2048;
static const int RAM_PageNOTMask = ~(RAM_PageSize - 1);
static uint16 Last_VDC_AR[2];
static bool WantHuC6273 = FALSE;
//static
VDC *fx_vdc_chips[2];
static uint16 BackupControl;
static uint8 SaveRAM[2 * 0x8000]; // BackupRAM + ExBackupRAM
static uint8* BackupRAM = (uint8*)(SaveRAM + (0x8000 * 0));
static uint8* ExBackupRAM = (uint8*)(SaveRAM + (0x8000 * 1));
static uint8 ExBusReset; // I/O Register at 0x0700
static bool BRAMDisabled;// Cached at game load, don't remove this caching behavior or save game loss may result(if we ever get a GUI).
// Checks to see if this main-RAM-area access
// is in the same DRAM page as the last access.
#define RAMLPCHECK \
{ \
if ((A & RAM_PageNOTMask) != RAM_LPA) \
{ \
timestamp += 3; \
RAM_LPA = A & RAM_PageNOTMask; \
} \
}
static v810_timestamp_t next_pad_ts, next_timer_ts, next_adpcm_ts, next_king_ts;
static void PCFX_FixNonEvents(void)
{
if (next_pad_ts & 0x40000000)
next_pad_ts = PCFX_EVENT_NONONO;
if (next_timer_ts & 0x40000000)
next_timer_ts = PCFX_EVENT_NONONO;
if (next_adpcm_ts & 0x40000000)
next_adpcm_ts = PCFX_EVENT_NONONO;
if (next_king_ts & 0x40000000)
next_king_ts = PCFX_EVENT_NONONO;
}
static void PCFX_Event_Reset(void)
{
next_pad_ts = PCFX_EVENT_NONONO;
next_timer_ts = PCFX_EVENT_NONONO;
next_adpcm_ts = PCFX_EVENT_NONONO;
next_king_ts = PCFX_EVENT_NONONO;
}
static INLINE uint32 CalcNextTS(void)
{
v810_timestamp_t next_timestamp = next_king_ts;
if (next_timestamp > next_pad_ts)
next_timestamp = next_pad_ts;
if (next_timestamp > next_timer_ts)
next_timestamp = next_timer_ts;
if (next_timestamp > next_adpcm_ts)
next_timestamp = next_adpcm_ts;
return next_timestamp;
}
static void RebaseTS(const v810_timestamp_t timestamp, const v810_timestamp_t new_base_timestamp)
{
assert(next_pad_ts > timestamp);
assert(next_timer_ts > timestamp);
assert(next_adpcm_ts > timestamp);
assert(next_king_ts > timestamp);
next_pad_ts -= (timestamp - new_base_timestamp);
next_timer_ts -= (timestamp - new_base_timestamp);
next_adpcm_ts -= (timestamp - new_base_timestamp);
next_king_ts -= (timestamp - new_base_timestamp);
}
void PCFX_SetEvent(const int type, const v810_timestamp_t next_timestamp)
{
if (type == PCFX_EVENT_PAD)
next_pad_ts = next_timestamp;
else if (type == PCFX_EVENT_TIMER)
next_timer_ts = next_timestamp;
else if (type == PCFX_EVENT_ADPCM)
next_adpcm_ts = next_timestamp;
else if (type == PCFX_EVENT_KING)
next_king_ts = next_timestamp;
if (next_timestamp < PCFX_V810.GetEventNT())
PCFX_V810.SetEventNT(next_timestamp);
}
static int32 MDFN_FASTCALL pcfx_event_handler(const v810_timestamp_t timestamp)
{
if (timestamp >= next_king_ts)
next_king_ts = KING_Update(timestamp);
if (timestamp >= next_pad_ts)
next_pad_ts = FXINPUT_Update(timestamp);
if (timestamp >= next_timer_ts)
next_timer_ts = FXTIMER_Update(timestamp);
if (timestamp >= next_adpcm_ts)
next_adpcm_ts = SoundBox_ADPCMUpdate(timestamp);
return CalcNextTS();
}
// Called externally from debug.cpp
static void ForceEventUpdates(const uint32 timestamp)
{
next_king_ts = KING_Update(timestamp);
next_pad_ts = FXINPUT_Update(timestamp);
next_timer_ts = FXTIMER_Update(timestamp);
next_adpcm_ts = SoundBox_ADPCMUpdate(timestamp);
PCFX_V810.SetEventNT(CalcNextTS());
}
#include "mednafen/pcfx/io-handler.inc"
#include "mednafen/pcfx/mem-handler.inc"
typedef struct
{
int8 tracknum;
int8 format;
uint32 lba;
} CDGameEntryTrack;
typedef struct
{
const char *name;
const char *name_original; // Original non-Romanized text.
const uint32 flags; // Emulation flags.
const unsigned int discs; // Number of discs for this game.
CDGameEntryTrack tracks[2][100]; // 99 tracks and 1 leadout track
} CDGameEntry;
#define CDGE_FORMAT_AUDIO 0
#define CDGE_FORMAT_DATA 1
#define CDGE_FLAG_ACCURATE_V810 0x01
#define CDGE_FLAG_FXGA 0x02
static uint32 EmuFlags;
static void Emulate(EmulateSpecStruct *espec)
{
FXINPUT_Frame();
MDFNMP_ApplyPeriodicCheats();
if (espec->VideoFormatChanged)
KING_SetPixelFormat(espec->surface->format);
KING_StartFrame(fx_vdc_chips, espec);
v810_timestamp_t v810_timestamp;
v810_timestamp = PCFX_V810.Run(pcfx_event_handler);
PCFX_FixNonEvents();
// Call before resetting v810_timestamp
ForceEventUpdates(v810_timestamp);
//
// Call KING_EndFrame() before SoundBox_Flush(), otherwise CD-DA audio distortion will occur due to sound data being updated
// after it was needed instead of before.
//
KING_EndFrame(v810_timestamp);
// new_base_ts is guaranteed to be <= v810_timestamp
v810_timestamp_t new_base_ts;
espec->SoundBufSize = SoundBox_Flush(v810_timestamp, &new_base_ts, espec->SoundBuf, espec->SoundBufMaxSize);
KING_ResetTS(new_base_ts);
FXTIMER_ResetTS(new_base_ts);
FXINPUT_ResetTS(new_base_ts);
SoundBox_ResetTS(new_base_ts);
// Call this AFTER all the EndFrame/Flush/ResetTS stuff
RebaseTS(v810_timestamp, new_base_ts);
PCFX_V810.ResetTS(new_base_ts);
}
static void PCFX_Reset(void)
{
const uint32 timestamp = PCFX_V810.v810_timestamp;
// Make sure all devices are synched to current timestamp before calling their Reset()/Power()(though devices should already do this sort of thing on their
// own, but it's not implemented for all of them yet, and even if it was all implemented this is also INSURANCE).
ForceEventUpdates(timestamp);
PCFX_Event_Reset();
RAM_LPA = 0;
ExBusReset = 0;
BackupControl = 0;
Last_VDC_AR[0] = 0;
Last_VDC_AR[1] = 0;
memset(RAM, 0x00, 2048 * 1024);
for (int i = 0; i < 2; i++)
{
int32 dummy_ne MDFN_NOWARN_UNUSED;
dummy_ne = fx_vdc_chips[i]->Reset();
}
KING_Reset(timestamp); // SCSICD_Power() is called from KING_Reset()
SoundBox_Reset(timestamp);
RAINBOW_Reset();
if (WantHuC6273)
HuC6273_Reset();
PCFXIRQ_Reset();
FXTIMER_Reset();
PCFX_V810.Reset();
// Force device updates so we can get new next event timestamp values.
ForceEventUpdates(timestamp);
}
static void PCFX_Power(void)
{
PCFX_Reset();
}
static void VDCA_IRQHook(bool asserted)
{
PCFXIRQ_Assert(PCFXIRQ_SOURCE_VDCA, asserted);
}
static void VDCB_IRQHook(bool asserted)
{
PCFXIRQ_Assert(PCFXIRQ_SOURCE_VDCB, asserted);
}
#ifdef _WIN32
char slash = '\\';
#else
char slash = '/';
#endif
static bool LoadCommon(std::vector<CDIF *> *CDInterfaces)
{
V810_Emu_Mode cpu_mode = _V810_EMU_MODE_COUNT;
std::string biospath = retro_base_directory + slash + MDFN_GetSettingS("pcfx.bios");
MDFNFILE *BIOSFile = file_open(biospath.c_str());
if (!BIOSFile)
return false;
cpu_mode = (V810_Emu_Mode)MDFN_GetSettingI("pcfx.cpu_emulation");
if (cpu_mode == _V810_EMU_MODE_COUNT)
cpu_mode = (EmuFlags & CDGE_FLAG_ACCURATE_V810) ? V810_EMU_MODE_ACCURATE : V810_EMU_MODE_FAST;
PCFX_V810.Init(cpu_mode, false);
uint32 RAM_Map_Addresses[1] = { 0x00000000 };
uint32 BIOSROM_Map_Addresses[1] = { 0xFFF00000 };
RAM = PCFX_V810.SetFastMap(RAM_Map_Addresses, 0x00200000, 1, "RAM");
if (!RAM)
return false;
BIOSROM = PCFX_V810.SetFastMap(BIOSROM_Map_Addresses, 0x00100000, 1, "BIOS ROM");
if (!BIOSROM)
return false;
if (BIOSFile->size != 1024 * 1024)
return false;
memcpy(BIOSROM, BIOSFile->data, 1024 * 1024);
file_close(BIOSFile);
BIOSFile = NULL;
for (int i = 0; i < 2; i++)
{
fx_vdc_chips[i] = new VDC(MDFN_GetSettingB("pcfx.nospritelimit"), 65536);
fx_vdc_chips[i]->SetWSHook(NULL);
fx_vdc_chips[i]->SetIRQHook(i ? VDCB_IRQHook : VDCA_IRQHook);
}
SoundBox_Init(MDFN_GetSettingB("pcfx.adpcm.emulate_buggy_codec"), MDFN_GetSettingB("pcfx.adpcm.suppress_channel_reset_clicks"));
RAINBOW_Init(MDFN_GetSettingB("pcfx.rainbow.chromaip"));
FXINPUT_Init();
FXTIMER_Init();
if (WantHuC6273)
HuC6273_Init();
if (!KING_Init())
{
free(BIOSROM);
free(RAM);
BIOSROM = NULL;
RAM = NULL;
return false;
}
CD_TrayOpen = false;
CD_SelectedDisc = 0;
/* Attempt to set initial disk index */
if ((disk_control_ext_info.initial_index > 0) &&
(disk_control_ext_info.initial_index < (*CDInterfaces).size()))
if (disk_control_ext_info.initial_index <
disk_control_ext_info.image_paths.size())
if (string_is_equal(
disk_control_ext_info.image_paths[disk_control_ext_info.initial_index].c_str(),
disk_control_ext_info.initial_path.c_str()))
CD_SelectedDisc = (int)disk_control_ext_info.initial_index;
SCSICD_SetDisc(true, NULL, true);
SCSICD_SetDisc(false, (*CDInterfaces)[CD_SelectedDisc], true);
EmulatedPCFX.nominal_height = MDFN_GetSettingUI("pcfx.slend") - MDFN_GetSettingUI("pcfx.slstart") + 1;
// Emulation raw framebuffer image should always be of 256 width when the pcfx.high_dotclock_width setting is set to "256",
// but it could be either 256 or 341 when the setting is set to "341", so stay with 1024 in that case so we won't have
// a messed up aspect ratio in our recorded QuickTime movies.
EmulatedPCFX.lcm_width = (MDFN_GetSettingUI("pcfx.high_dotclock_width") == 256) ? 256 : 1024;
EmulatedPCFX.lcm_height = EmulatedPCFX.nominal_height;
MDFNMP_Init(1024 * 1024, ((uint64)1 << 32) / (1024 * 1024));
MDFNMP_AddRAM(2048 * 1024, 0x00000000, RAM);
if (!(BRAMDisabled = MDFN_GetSettingB("pcfx.disable_bram")))
{
// Initialize Save RAM
memset(SaveRAM, 0, sizeof(SaveRAM));
static const uint8 BRInit00[] = { 0x24, 0x8A, 0xDF, 0x50, 0x43, 0x46, 0x58, 0x53, 0x72, 0x61, 0x6D, 0x80,
0x00, 0x01, 0x01, 0x00, 0x01, 0x40, 0x00, 0x00, 0x01, 0xF9, 0x03, 0x00,
0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
};
static const uint8 BRInit80[] = { 0xF9, 0xFF, 0xFF };
memcpy(BackupRAM + 0x00, BRInit00, sizeof(BRInit00));
memcpy(BackupRAM + 0x80, BRInit80, sizeof(BRInit80));
static const uint8 ExBRInit00[] = { 0x24, 0x8A, 0xDF, 0x50, 0x43, 0x46, 0x58, 0x43, 0x61, 0x72, 0x64, 0x80,
0x00, 0x01, 0x01, 0x00, 0x01, 0x40, 0x00, 0x00, 0x01, 0xF9, 0x03, 0x00,
0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
};
static const uint8 ExBRInit80[] = { 0xF9, 0xFF, 0xFF };
memcpy(ExBackupRAM + 0x00, ExBRInit00, sizeof(ExBRInit00));
memcpy(ExBackupRAM + 0x80, ExBRInit80, sizeof(ExBRInit80));
}
// Default to 16-bit bus.
for (int i = 0; i < 256; i++)
{
PCFX_V810.SetMemReadBus32(i, FALSE);
PCFX_V810.SetMemWriteBus32(i, FALSE);
}
// 16MiB RAM area.
PCFX_V810.SetMemReadBus32(0, TRUE);
PCFX_V810.SetMemWriteBus32(0, TRUE);
// Bitstring read range
for (int i = 0xA0; i <= 0xAF; i++)
{
PCFX_V810.SetMemReadBus32(i, FALSE); // Reads to the read range are 16-bit, and
PCFX_V810.SetMemWriteBus32(i, TRUE); // writes are 32-bit.
}
// Bitstring write range
for (int i = 0xB0; i <= 0xBF; i++)
{
PCFX_V810.SetMemReadBus32(i, TRUE); // Reads to the write range are 32-bit,
PCFX_V810.SetMemWriteBus32(i, FALSE); // but writes are 16-bit!
}
// BIOS area
for (int i = 0xF0; i <= 0xFF; i++)
{
PCFX_V810.SetMemReadBus32(i, FALSE);
PCFX_V810.SetMemWriteBus32(i, FALSE);
}
PCFX_V810.SetMemReadHandlers(mem_rbyte, mem_rhword, mem_rword);
PCFX_V810.SetMemWriteHandlers(mem_wbyte, mem_whword, mem_wword);
PCFX_V810.SetIOReadHandlers(port_rbyte, port_rhword, NULL);
PCFX_V810.SetIOWriteHandlers(port_wbyte, port_whword, NULL);
return true;
}
static void DoMD5CDVoodoo(std::vector<CDIF *> *CDInterfaces)
{
static CDGameEntry GameList[] =
{
#include "mednafen/pcfx/gamedb.inc"
};
const CDGameEntry *found_entry = NULL;
TOC toc;
for (unsigned if_disc = 0; if_disc < CDInterfaces->size(); if_disc++)
{
(*CDInterfaces)[if_disc]->ReadTOC(&toc);
if (toc.first_track == 1)
{
for (unsigned int g = 0; g < sizeof(GameList) / sizeof(CDGameEntry); g++)
{
const CDGameEntry *entry = &GameList[g];
assert(entry->discs == 1 || entry->discs == 2);
for (unsigned int disc = 0; disc < entry->discs; disc++)
{
const CDGameEntryTrack *et = entry->tracks[disc];
bool GameFound = TRUE;
while(et->tracknum != -1 && GameFound)
{
assert(et->tracknum > 0 && et->tracknum < 100);
if (toc.tracks[et->tracknum].lba != et->lba)
GameFound = FALSE;
if ( ((et->format == CDGE_FORMAT_DATA) ? 0x4 : 0x0) != (toc.tracks[et->tracknum].control & 0x4))
GameFound = FALSE;
et++;
}
if (et->tracknum == -1)
{
if ((et - 1)->tracknum != toc.last_track)
GameFound = FALSE;
if (et->lba != toc.tracks[100].lba)
GameFound = FALSE;
}
if (GameFound)
{
found_entry = entry;
goto FoundIt;
}
} // End disc count loop
}
}
FoundIt: ;
if (found_entry)
{
EmuFlags = found_entry->flags;
if (found_entry->discs > 1)
{
const char *hash_prefix = "Mednafen PC-FX Multi-Game Set";
md5_context md5_gameset;
mednafen_md5_starts(&md5_gameset);
mednafen_md5_update(&md5_gameset, (uint8_t*)hash_prefix, strlen(hash_prefix));
for (unsigned int disc = 0; disc < found_entry->discs; disc++)
{
const CDGameEntryTrack *et = found_entry->tracks[disc];
while(et->tracknum)
{
mednafen_md5_update_u32_as_lsb(&md5_gameset, et->tracknum);
mednafen_md5_update_u32_as_lsb(&md5_gameset, (uint32)et->format);
mednafen_md5_update_u32_as_lsb(&md5_gameset, et->lba);
if (et->tracknum == -1)
break;
et++;
}
}
}
break;
}
} // end: for (unsigned if_disc = 0; if_disc < CDInterfaces->size(); if_disc++)
}
static int LoadCD(std::vector<CDIF *> *CDInterfaces)
{
EmuFlags = 0;
cdifs = CDInterfaces;
DoMD5CDVoodoo(CDInterfaces);
if (!LoadCommon(CDInterfaces))
return 0;
PCFX_Power();
return 1;
}
static void PCFX_CDInsertEject(void)
{
CD_TrayOpen = !CD_TrayOpen;
#if 0
for (unsigned disc = 0; disc < cdifs->size(); disc++)
{
if (!(*cdifs)[disc]->Eject(CD_TrayOpen))
{
MDFN_DispMessage("Eject error.");
CD_TrayOpen = !CD_TrayOpen;
}
}
#endif
if (CD_TrayOpen)
MDFN_DispMessage("Virtual CD Drive Tray Open");
else
MDFN_DispMessage("Virtual CD Drive Tray Closed");
SCSICD_SetDisc(CD_TrayOpen, (CD_SelectedDisc >= 0 && !CD_TrayOpen) ? (*cdifs)[CD_SelectedDisc] : NULL);
}
static void PCFX_CDEject(void)
{
if (!CD_TrayOpen)
PCFX_CDInsertEject();
}
static void PCFX_CDSelect(void)
{
if (cdifs && CD_TrayOpen)
{
CD_SelectedDisc = (CD_SelectedDisc + 1) % (cdifs->size() + 1);
if ((unsigned)CD_SelectedDisc == cdifs->size())
CD_SelectedDisc = -1;
if (CD_SelectedDisc == -1)
MDFN_DispMessage("Disc absence selected.");
else
MDFN_DispMessage("Disc %d of %d selected.", CD_SelectedDisc + 1, (int)cdifs->size());
}
}
static void CloseGame(void)
{
unsigned i;
for (i = 0; i < 2; i++)
{
if (fx_vdc_chips[i])
{
delete fx_vdc_chips[i];
fx_vdc_chips[i] = NULL;
}
}
RAINBOW_Close();
KING_Close();
SoundBox_Kill();
PCFX_V810.Kill();
// The allocated memory RAM and BIOSROM is free'd in V810_Kill()
RAM = NULL;
BIOSROM = NULL;
}
static void DoSimpleCommand(int cmd)
{
switch(cmd)
{
case MDFN_MSC_INSERT_DISK: PCFX_CDInsertEject(); break;
case MDFN_MSC_SELECT_DISK: PCFX_CDSelect(); break;
case MDFN_MSC_EJECT_DISK: PCFX_CDEject(); break;
case MDFN_MSC_RESET: PCFX_Reset(); break;
case MDFN_MSC_POWER: PCFX_Power(); break;
}
}
extern "C" int StateAction(StateMem *sm, int load, int data_only)
{
const v810_timestamp_t timestamp = PCFX_V810.v810_timestamp;
SFORMAT StateRegs[] =
{
SFARRAY(RAM, 0x200000),
SFARRAY16(Last_VDC_AR, 2),
SFVAR(RAM_LPA),
SFVAR(BackupControl),
SFVAR(ExBusReset),
SFARRAY(BackupRAM, BRAMDisabled ? 0 : 0x8000), //SFPTR8
SFARRAY(ExBackupRAM, BRAMDisabled ? 0 : 0x8000), //SFPTR8
// SFVAR(CD_TrayOpen),
// SFVAR(CD_SelectedDisc),
SFEND
};
int ret = MDFNSS_StateAction(sm, load, data_only, StateRegs, "MAIN", false);
for (int i = 0; i < 2; i++)
ret &= fx_vdc_chips[i]->StateAction(sm, load, data_only, i ? "VDC1" : "VDC0");
ret &= FXINPUT_StateAction(sm, load, data_only);
ret &= PCFXIRQ_StateAction(sm, load, data_only);
ret &= KING_StateAction(sm, load, data_only);
ret &= PCFX_V810.StateAction(sm, load, data_only);
ret &= FXTIMER_StateAction(sm, load, data_only);
ret &= SoundBox_StateAction(sm, load, data_only);
ret &= SCSICD_StateAction(sm, load, data_only, "CDRM");
ret &= RAINBOW_StateAction(sm, load, data_only);
if (load)
{
//
// Rather than bothering to store next event timestamp deltas in save states, we'll just recalculate next event times on save state load as a side effect
// of this call.
//
ForceEventUpdates(timestamp);
if (cdifs)
{
// Sanity check.
if (CD_SelectedDisc >= (int)cdifs->size())
CD_SelectedDisc = (int)cdifs->size() - 1;
SCSICD_SetDisc(CD_TrayOpen, (CD_SelectedDisc >= 0 && !CD_TrayOpen) ? (*cdifs)[CD_SelectedDisc] : NULL, true);
}
}
return(ret);
}
MDFNGI EmulatedPCFX =
{
0, // lcm_width
0, // lcm_height
NULL, // Dummy
288, // Nominal width
240, // Nominal height
1024, // Framebuffer width
512, // Framebuffer height
};
#ifdef NEED_DEINTERLACER
static bool PrevInterlaced;
static Deinterlacer deint;
#endif
#define MEDNAFEN_CORE_NAME_MODULE "pcfx"
#define MEDNAFEN_CORE_NAME "Beetle PC-FX"
#define MEDNAFEN_CORE_VERSION "v0.9.36.5"
#define MEDNAFEN_CORE_EXTENSIONS "cue|ccd|toc|chd"
#define MEDNAFEN_CORE_TIMING_FPS 59.94
#define MEDNAFEN_CORE_GEOMETRY_BASE_W (EmulatedPCFX.nominal_width)
#define MEDNAFEN_CORE_GEOMETRY_BASE_H (EmulatedPCFX.nominal_height)
#define MEDNAFEN_CORE_GEOMETRY_MAX_W 1024
#define MEDNAFEN_CORE_GEOMETRY_MAX_H 480
#define MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO (4.0 / 3.0)
#define FB_WIDTH 1024
#define FB_HEIGHT 480
#define FB_MAX_HEIGHT FB_HEIGHT
static bool cdimagecache = false;
static std::vector<CDIF *> CDInterfaces; // FIXME: Cleanup on error out.
// TODO: LoadCommon()
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 - strlen(buf) - 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';
}
//
// Disk Interface
//
static bool disk_set_eject_state( bool ejected )
{
if ( ejected == cd_eject_state )
return false;
cd_eject_state = ejected;
DoSimpleCommand(ejected ? MDFN_MSC_EJECT_DISK : MDFN_MSC_INSERT_DISK);
return true;
}
static bool disk_get_eject_state(void)
{
return cd_eject_state;
}
static bool disk_set_image_index(unsigned index)
{
// only listen if the tray is open
if (cd_eject_state)
{
CD_SelectedDisc = index;
if (CD_SelectedDisc > CDInterfaces.size())
CD_SelectedDisc = CDInterfaces.size();
// Very hacky. CDSelect command will want to increment first.
CD_SelectedDisc--;
DoSimpleCommand(MDFN_MSC_SELECT_DISK);
return true;
}
return false;
}
static unsigned disk_get_num_images(void)
{
return CDInterfaces.size();
}
static unsigned disk_get_image_index(void)
{
return CD_SelectedDisc;
}
static bool disk_replace_image_index(unsigned index, const struct retro_game_info *info)
{
return false;
}
static bool disk_add_image_index(void)
{
return true;
}
static bool disk_set_initial_image(unsigned index, const char *path)
{
if (string_is_empty(path))
return false;
disk_control_ext_info.initial_index = index;
disk_control_ext_info.initial_path = path;
return true;
}
static bool disk_get_image_path(unsigned index, char *path, size_t len)
{
if (len < 1)
return false;
if ((index < disk_get_num_images()) &&
(index < disk_control_ext_info.image_paths.size()))
{
if (!string_is_empty(disk_control_ext_info.image_paths[index].c_str()))
{
strlcpy(path, disk_control_ext_info.image_paths[index].c_str(), len);
return true;
}
}
return false;
}
static bool disk_get_image_label(unsigned index, char *label, size_t len)
{
if (len < 1)
return false;
if ((index < disk_get_num_images()) &&
(index < disk_control_ext_info.image_labels.size()))
{
if (!string_is_empty(disk_control_ext_info.image_labels[index].c_str()))
{
strlcpy(label, disk_control_ext_info.image_labels[index].c_str(), len);
return true;
}
}
return false;
}
static struct retro_disk_control_callback disk_interface =
{
disk_set_eject_state,
disk_get_eject_state,
disk_get_image_index,
disk_set_image_index,
disk_get_num_images,
disk_replace_image_index,
disk_add_image_index,
};
static struct retro_disk_control_ext_callback disk_interface_ext =
{
disk_set_eject_state,
disk_get_eject_state,
disk_get_image_index,
disk_set_image_index,
disk_get_num_images,
disk_replace_image_index,
disk_add_image_index,
disk_set_initial_image,
disk_get_image_path,
disk_get_image_label,
};
static void disc_clear(void)
{
disk_control_ext_info.initial_index = 0;
disk_control_ext_info.initial_path.clear();
disk_control_ext_info.image_paths.clear();
disk_control_ext_info.image_labels.clear();
}
static void disc_init(void)
{
unsigned dci_version = 0;
cd_eject_state = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_DISK_CONTROL_INTERFACE_VERSION, &dci_version) && (dci_version >= 1))
environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_EXT_INTERFACE, &disk_interface_ext);
else
environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_interface);
disc_clear();
}
static void check_system_specs(void)
{
unsigned level = 15;
environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
}
void retro_init(void)
{
struct retro_log_callback log;
const char *dir = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
log_cb = log.log;
else
log_cb = NULL;
disc_init(); // Initialize disc control interface
CDUtility_Init();