mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-09-20 21:29:46 +02:00
8af85558d0
.added YM2413 context to Master System savestates .removed support for older savestates format (1.3.x, 1.4.x), use 1.5.0 to convert old savestates to new (1.5.x) format
577 lines
14 KiB
C
577 lines
14 KiB
C
/*
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* file_slot.c
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*
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* FAT and Memory Card SRAM/State slots managment
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*
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* Softdev (2006)
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* Eke-Eke (2007,2008,2009)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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***************************************************************************/
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#include "shared.h"
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#include "file_slot.h"
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#include "file_load.h"
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#include "gui.h"
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#include "filesel.h"
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#include "saveicon.h"
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/**
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* libOGC CARD System Work Area
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*/
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static u8 SysArea[CARD_WORKAREA] ATTRIBUTE_ALIGN (32);
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/****************************************************************************
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* CardMount
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*
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* libOGC provides the CARD_Mount function, and it should be all you need.
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* However, experience with previous emulators has taught me that you are
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* better off doing a little bit more than that!
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*
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*****************************************************************************/
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static int CardMount(int slot)
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{
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int tries = 0;
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#if defined(HW_DOL)
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*(unsigned long *) (0xCC006800) |= 1 << 13; /*** Disable Encryption ***/
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#elif defined(HW_RVL)
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*(unsigned long *) (0xCD006800) |= 1 << 13; /*** Disable Encryption ***/
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#endif
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while (tries < 10)
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{
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VIDEO_WaitVSync ();
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if (CARD_Mount(slot, SysArea, NULL) == CARD_ERROR_READY)
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return 1;
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else
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EXI_ProbeReset ();
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tries++;
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}
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return 0;
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}
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/****************************************************************************
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* Slot Management
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*
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*
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****************************************************************************/
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void slot_autoload(int slot, int device)
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{
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if (!cart.romsize)
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return;
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SILENT = 1;
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slot_load(slot, device);
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SILENT = 0;
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}
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void slot_autosave(int slot, int device)
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{
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if (!cart.romsize)
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return;
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/* only save if SRAM changed */
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if (!slot && (crc32(0, &sram.sram[0], 0x10000) == sram.crc))
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return;
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SILENT = 1;
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slot_save(slot, device);
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SILENT = 0;
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}
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void slot_autodetect(int slot, int device, t_slot *ptr)
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{
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if (!ptr)
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return;
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char filename[MAXPATHLEN];
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memset(ptr,0,sizeof(t_slot));
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if (!device)
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{
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/* FAT support */
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if (slot > 0)
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sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
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else
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sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
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/* Open file */
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FILE *fp = fopen(filename, "rb");
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if (fp)
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{
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/* Retrieve date & close */
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struct stat filestat;
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stat(filename, &filestat);
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struct tm *timeinfo = localtime(&filestat.st_mtime);
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ptr->year = 1900 + timeinfo->tm_year;
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ptr->month = timeinfo->tm_mon;
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ptr->day = timeinfo->tm_mday;
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ptr->hour = timeinfo->tm_hour;
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ptr->min = timeinfo->tm_min;
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fclose(fp);
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ptr->valid = 1;
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}
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}
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else
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{
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/* Memory Card support */
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if (slot > 0)
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sprintf(filename,"MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
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else
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sprintf(filename,"MD-%04X.srm", rominfo.realchecksum);
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/* Initialise the CARD system */
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memset(&SysArea, 0, CARD_WORKAREA);
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CARD_Init("GENP", "00");
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/* CARD slot */
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device--;
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/* Mount CARD */
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if (CardMount(device))
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{
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/* Open file */
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card_file CardFile;
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if (CARD_Open(device, filename, &CardFile) == CARD_ERROR_READY)
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{
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/* Retrieve date & close */
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card_stat CardStatus;
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CARD_GetStatus(device, CardFile.filenum, &CardStatus);
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time_t rawtime = CardStatus.time;
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struct tm *timeinfo = localtime(&rawtime);
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ptr->year = 1900 + timeinfo->tm_year;
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ptr->month = timeinfo->tm_mon;
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ptr->day = timeinfo->tm_mday;
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ptr->hour = timeinfo->tm_hour;
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ptr->min = timeinfo->tm_min;
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CARD_Close(&CardFile);
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ptr->valid = 1;
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}
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CARD_Unmount(device);
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}
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}
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}
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int slot_delete(int slot, int device)
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{
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char filename[MAXPATHLEN];
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int ret = 0;
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if (!device)
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{
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/* FAT support */
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if (slot > 0)
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{
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/* remove screenshot */
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sprintf(filename,"%s/saves/%s__%d.png", DEFAULT_PATH, rom_filename, slot - 1);
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remove(filename);
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sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
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}
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else
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sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
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/* Delete file */
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ret = remove(filename);
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}
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else
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{
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/* Memory Card support */
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if (slot > 0)
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sprintf(filename,"MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
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else
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sprintf(filename,"MD-%04X.srm", rominfo.realchecksum);
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/* Initialise the CARD system */
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memset(&SysArea, 0, CARD_WORKAREA);
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CARD_Init("GENP", "00");
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/* CARD slot */
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device--;
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/* Mount CARD */
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if (CardMount(device))
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{
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/* Delete file */
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ret = CARD_Delete(device,filename);
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CARD_Unmount(device);
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}
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}
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return ret;
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}
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int slot_load(int slot, int device)
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{
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char filename[MAXPATHLEN];
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int filesize, done = 0;
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int offset = 0;
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u8 *savebuffer;
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if (slot > 0)
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{
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GUI_MsgBoxOpen("Information","Loading State ...",1);
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}
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else
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{
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if (!sram.on)
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{
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GUI_WaitPrompt("Error","SRAM is disabled !");
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return 0;
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}
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GUI_MsgBoxOpen("Information","Loading SRAM ...",1);
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}
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if (!device)
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{
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/* FAT support */
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if (slot > 0)
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sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
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else
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sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
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/* Open file */
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FILE *fp = fopen(filename, "rb");
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if (!fp)
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{
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GUI_WaitPrompt("Error","Unable to open file !");
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return 0;
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}
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/* Read size */
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fseek(fp, 0, SEEK_END);
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filesize = ftell(fp);
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fseek(fp, 0, SEEK_SET);
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/* allocate buffer */
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savebuffer = (u8 *)memalign(32,filesize);
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if (!savebuffer)
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{
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GUI_WaitPrompt("Error","Unable to allocate memory !");
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fclose(fp);
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return 0;
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}
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/* Read into buffer (2k blocks) */
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while (filesize > FILECHUNK)
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{
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fread(savebuffer + done, FILECHUNK, 1, fp);
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done += FILECHUNK;
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filesize -= FILECHUNK;
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}
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/* Read remaining bytes */
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fread(savebuffer + done, filesize, 1, fp);
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done += filesize;
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fclose(fp);
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}
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else
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{
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/* Memory Card support */
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if (slot > 0)
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sprintf(filename, "MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
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else
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sprintf(filename, "MD-%04X.srm", rominfo.realchecksum);
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/* Initialise the CARD system */
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char action[64];
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memset(&SysArea, 0, CARD_WORKAREA);
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CARD_Init("GENP", "00");
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/* CARD slot */
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device--;
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/* Attempt to mount the card */
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if (!CardMount(device))
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{
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GUI_WaitPrompt("Error","Unable to mount memory card");
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return 0;
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}
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/* Retrieve the sector size */
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u32 SectorSize = 0;
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int CardError = CARD_GetSectorSize(device, &SectorSize);
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if (!SectorSize)
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{
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sprintf(action, "Invalid sector size (%d)", CardError);
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GUI_WaitPrompt("Error",action);
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CARD_Unmount(device);
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return 0;
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}
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/* Open file */
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card_file CardFile;
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CardError = CARD_Open(device, filename, &CardFile);
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if (CardError)
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{
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sprintf(action, "Unable to open file (%d)", CardError);
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GUI_WaitPrompt("Error",action);
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CARD_Unmount(device);
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return 0;
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}
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/* Retrieve file size */
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filesize = CardFile.len;
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if (filesize % SectorSize)
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filesize = ((filesize / SectorSize) + 1) * SectorSize;
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/* Allocate buffer */
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savebuffer = (u8 *)memalign(32,filesize);
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if (!savebuffer)
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{
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GUI_WaitPrompt("Error","Unable to allocate memory !");
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CARD_Close(&CardFile);
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CARD_Unmount(device);
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return 0;
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}
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/* Read file sectors */
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while (filesize > 0)
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{
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CARD_Read(&CardFile, &savebuffer[done], SectorSize, done);
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done += SectorSize;
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filesize -= SectorSize;
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}
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CARD_Close(&CardFile);
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CARD_Unmount(device);
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offset = 2112;
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}
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if (slot > 0)
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{
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/* Load state */
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if (state_load(&savebuffer[offset]) <= 0)
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{
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free(savebuffer);
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GUI_WaitPrompt("Error","Invalid state file !");
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return 0;
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}
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}
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else
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{
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/* Load SRAM & update CRC */
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memcpy(sram.sram, &savebuffer[offset], 0x10000);
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sram.crc = crc32(0, sram.sram, 0x10000);
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}
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free(savebuffer);
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GUI_MsgBoxClose();
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return 1;
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}
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int slot_save(int slot, int device)
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{
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char filename[MAXPATHLEN];
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int filesize, done = 0;
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int offset = device ? 2112 : 0;
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u8 *savebuffer;
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if (slot > 0)
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{
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/* allocate buffer */
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savebuffer = (u8 *)memalign(32,STATE_SIZE);
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if (!savebuffer)
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{
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GUI_WaitPrompt("Error","Unable to allocate memory !");
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return 0;
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}
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GUI_MsgBoxOpen("Information","Saving State ...",1);
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filesize = state_save(&savebuffer[offset]);
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}
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else
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{
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if (!sram.on)
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{
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GUI_WaitPrompt("Error","SRAM is disabled !");
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return 0;
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}
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/* allocate buffer */
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savebuffer = (u8 *)memalign(32,0x10000+offset);
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if (!savebuffer)
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{
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GUI_WaitPrompt("Error","Unable to allocate memory !");
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return 0;
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}
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GUI_MsgBoxOpen("Information","Saving SRAM ...",1);
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memcpy(&savebuffer[offset], sram.sram, 0x10000);
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sram.crc = crc32(0, sram.sram, 0x10000);
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filesize = 0x10000;
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}
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if (!device)
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{
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/* FAT support */
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if (slot > 0)
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sprintf(filename, "%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
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else
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sprintf(filename, "%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
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/* Open file */
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FILE *fp = fopen(filename, "wb");
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if (!fp)
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{
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GUI_WaitPrompt("Error","Unable to open file !");
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free(savebuffer);
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return 0;
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}
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/* Write from buffer (2k blocks) */
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while (filesize > FILECHUNK)
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{
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fwrite(savebuffer + done, FILECHUNK, 1, fp);
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done += FILECHUNK;
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filesize -= FILECHUNK;
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}
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/* Write remaining bytes */
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fwrite(savebuffer + done, filesize, 1, fp);
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done += filesize;
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fclose(fp);
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}
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else
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{
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/* Memory Card support */
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if (slot > 0)
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sprintf(filename, "MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
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else
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sprintf(filename, "MD-%04X.srm", rominfo.realchecksum);
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/* Initialise the CARD system */
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char action[64];
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memset(&SysArea, 0, CARD_WORKAREA);
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CARD_Init("GENP", "00");
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/* CARD slot */
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device--;
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/* Attempt to mount the card */
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if (!CardMount(device))
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{
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GUI_WaitPrompt("Error","Unable to mount memory card");
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free(savebuffer);
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return 0;
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}
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/* Retrieve the sector size */
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u32 SectorSize = 0;
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int CardError = CARD_GetSectorSize(device, &SectorSize);
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if (!SectorSize)
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{
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sprintf(action, "Invalid sector size (%d)", CardError);
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GUI_WaitPrompt("Error",action);
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CARD_Unmount(device);
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free(savebuffer);
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return 0;
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}
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/* Build the output buffer */
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char comment[2][32] = { {"Genesis Plus GX"}, {"SRAM Save"} };
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strcpy (comment[1], filename);
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memcpy (&savebuffer[0], &icon, 2048);
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memcpy (&savebuffer[2048], &comment[0], 64);
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/* Adjust file size */
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filesize += 2112;
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if (filesize % SectorSize)
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filesize = ((filesize / SectorSize) + 1) * SectorSize;
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/* Check if file already exists */
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card_file CardFile;
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if (CARD_Open(device, filename, &CardFile) == CARD_ERROR_READY)
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{
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int size = filesize - CardFile.len;
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CARD_Close(&CardFile);
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memset(&CardFile,0,sizeof(CardFile));
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/* Check file new size */
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if (size > 0)
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{
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CardError = CARD_Create(device, "TEMP", size, &CardFile);
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if (CardError)
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{
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sprintf(action, "Unable to increase file size (%d)", CardError);
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GUI_WaitPrompt("Error",action);
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CARD_Unmount(device);
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free(savebuffer);
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return 0;
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}
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/* delete temporary file */
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CARD_Close(&CardFile);
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memset(&CardFile,0,sizeof(CardFile));
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CARD_Delete(device, "TEMP");
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}
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/* delete previously existing file */
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CARD_Delete(device, filename);
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}
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/* Create a new file */
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CardError = CARD_Create(device, filename, filesize, &CardFile);
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if (CardError)
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{
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sprintf(action, "Unable to create file (%d)", CardError);
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GUI_WaitPrompt("Error",action);
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CARD_Unmount(device);
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free(savebuffer);
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return 0;
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}
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/* Update file informations */
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time_t rawtime;
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time(&rawtime);
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card_stat CardStatus;
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CARD_GetStatus(device, CardFile.filenum, &CardStatus);
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CardStatus.icon_addr = 0x0;
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CardStatus.icon_fmt = 2;
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CardStatus.icon_speed = 1;
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CardStatus.comment_addr = 2048;
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CardStatus.time = rawtime;
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CARD_SetStatus(device, CardFile.filenum, &CardStatus);
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/* Write file sectors */
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while (filesize > 0)
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{
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CARD_Write(&CardFile, &savebuffer[done], SectorSize, done);
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filesize -= SectorSize;
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done += SectorSize;
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}
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/* Close file */
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CARD_Close(&CardFile);
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CARD_Unmount(device);
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}
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GUI_MsgBoxClose();
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free(savebuffer);
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/* Save screenshot */
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if (slot && !device)
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{
|
|
sprintf(filename,"%s/saves/%s__%d.png", DEFAULT_PATH, rom_filename, slot - 1);
|
|
gxSaveScreenshot(filename);
|
|
}
|
|
|
|
return 1;
|
|
}
|