The-Homebrew-Cloud/Genesis-Plus-GX
2
0
Fork 0
mirror of https://github.com/ekeeke/Genesis-Plus-GX.git synced 2024-09-19 20:59:43 +02:00
Code Issues Packages Projects Releases Wiki Activity
81054b0420
Genesis-Plus-GX/source/gx/fileio/file_slot.c
ekeeke31 a6fdb00469 fixed memory card support
2010-05-07 08:19:32 +00:00

540 lines
14 KiB
C
Raw Blame History

/*
* file_slot.c
*
* FAT and Memory Card SRAM/State slots managment
*
* Softdev (2006)
* Eke-Eke (2007,2008,2009)
*
* 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
*
***************************************************************************/
#include "shared.h"
#include "file_slot.h"
#include "file_fat.h"
#include "dvd.h"
#include "gui.h"
#include "filesel.h"
#include "saveicon.h"
/**
* libOGC CARD System Work Area
*/
static u8 SysArea[CARD_WORKAREA] ATTRIBUTE_ALIGN (32);
/**
* DMA Transfer Area.
* Must be 32-byte aligned.
* 64k SRAM + 2k Icon
*/
static u8 savebuffer[STATE_SIZE] ATTRIBUTE_ALIGN (32);
/****************************************************************************
* CardMount
*
* libOGC provides the CARD_Mount function, and it should be all you need.
* However, experience with previous emulators has taught me that you are
* better off doing a little bit more than that!
*
*****************************************************************************/
static int CardMount(int slot)
{
int tries = 0;
#if defined(HW_DOL)
*(unsigned long *) (0xCC006800) |= 1 << 13; /*** Disable Encryption ***/
uselessinquiry ();
#elif defined(HW_RVL)
*(unsigned long *) (0xCD006800) |= 1 << 13; /*** Disable Encryption ***/
#endif
while (tries < 10)
{
VIDEO_WaitVSync ();
if (CARD_Mount(slot, SysArea, NULL) == CARD_ERROR_READY)
return 1;
else
EXI_ProbeReset ();
tries++;
}
return 0;
}
/****************************************************************************
* Slot Management
*
*
****************************************************************************/
void slot_autoload(int slot, int device)
{
if (!cart.romsize)
return;
SILENT = 1;
slot_load(slot, device);
SILENT = 0;
}
void slot_autosave(int slot, int device)
{
if (!cart.romsize)
return;
/* only save if SRAM changed */
if (!slot && (crc32(0, &sram.sram[0], 0x10000) == sram.crc))
return;
SILENT = 1;
slot_save(slot, device);
SILENT = 0;
}
void slot_autodetect(int slot, int device, t_slot *ptr)
{
if (!ptr)
return;
char filename[MAXPATHLEN];
memset(ptr,0,sizeof(t_slot));
if (!device)
{
/* FAT support */
if (slot > 0)
sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
else
sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
/* Open file */
FILE *fp = fopen(filename, "rb");
if (fp)
{
/* Retrieve date & close */
struct stat filestat;
stat(filename, &filestat);
struct tm *timeinfo = localtime(&filestat.st_mtime);
ptr->year = 1900 + timeinfo->tm_year;
ptr->month = timeinfo->tm_mon;
ptr->day = timeinfo->tm_mday;
ptr->hour = timeinfo->tm_hour;
ptr->min = timeinfo->tm_min;
fclose(fp);
ptr->valid = 1;
}
}
else
{
/* Memory Card support */
if (slot > 0)
sprintf(filename,"MD-%04X.gp%d", realchecksum, slot - 1);
else
sprintf(filename,"MD-%04X.srm", realchecksum);
/* Initialise the CARD system */
memset(&SysArea, 0, CARD_WORKAREA);
CARD_Init("GENP", "00");
/* CARD slot */
device--;
/* Mount CARD */
if (CardMount(device))
{
/* Open file */
card_file CardFile;
if (CARD_Open(device, filename, &CardFile) == CARD_ERROR_READY)
{
/* Retrieve date & close */
card_stat CardStatus;
CARD_GetStatus(device, CardFile.filenum, &CardStatus);
time_t rawtime = CardStatus.time;
struct tm *timeinfo = localtime(&rawtime);
ptr->year = 1900 + timeinfo->tm_year;
ptr->month = timeinfo->tm_mon;
ptr->day = timeinfo->tm_mday;
ptr->hour = timeinfo->tm_hour;
ptr->min = timeinfo->tm_min;
CARD_Close(&CardFile);
ptr->valid = 1;
}
CARD_Unmount(device);
}
}
}
int slot_delete(int slot, int device)
{
char filename[MAXPATHLEN];
int ret = 0;
if (!device)
{
/* FAT support */
if (slot > 0)
{
/* remove screenshot */
sprintf(filename,"%s/saves/%s__%d.png", DEFAULT_PATH, rom_filename, slot - 1);
remove(filename);
sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
}
else
sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
/* Delete file */
ret = remove(filename);
}
else
{
/* Memory Card support */
if (slot > 0)
sprintf(filename,"MD-%04X.gp%d", realchecksum, slot - 1);
else
sprintf(filename,"MD-%04X.srm", realchecksum);
/* Initialise the CARD system */
memset(&SysArea, 0, CARD_WORKAREA);
CARD_Init("GENP", "00");
/* CARD slot */
device--;
/* Mount CARD */
if (CardMount(device))
{
/* Delete file */
ret = CARD_Delete(device,filename);
CARD_Unmount(device);
}
}
return ret;
}
int slot_load(int slot, int device)
{
char filename[MAXPATHLEN];
int filesize, done = 0;
int offset = device ? 2112 : 0;
if (slot > 0)
GUI_MsgBoxOpen("Information","Loading State ...",1);
else
GUI_MsgBoxOpen("Information","Loading SRAM ...",1);
/* clean buffer */
memset(savebuffer, 0, STATE_SIZE);
if (!device)
{
/* FAT support */
if (slot > 0)
sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
else
sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
/* Open file */
FILE *fp = fopen(filename, "rb");
if (fp)
{
/* Read size */
fseek(fp , 0 , SEEK_END);
filesize = ftell (fp);
fseek(fp, 0, SEEK_SET);
/* Read into buffer (2k blocks) */
while (filesize > FATCHUNK)
{
fread(savebuffer + done, FATCHUNK, 1, fp);
done += FATCHUNK;
filesize -= FATCHUNK;
}
/* Read remaining bytes */
fread(savebuffer + done, filesize, 1, fp);
done += filesize;
fclose(fp);
}
else
{
GUI_WaitPrompt("Error","Unable to open file !");
return 0;
}
}
else
{
/* Memory Card support */
if (slot > 0)
sprintf(filename, "MD-%04X.gp%d", realchecksum, slot - 1);
else
sprintf(filename, "MD-%04X.srm", realchecksum);
/* Initialise the CARD system */
char action[80];
memset(&SysArea, 0, CARD_WORKAREA);
CARD_Init("GENP", "00");
/* CARD slot */
device--;
/* Attempt to mount the card */
if (CardMount(device))
{
/* Retrieve the sector size */
u32 SectorSize = 0;
int CardError = CARD_GetSectorSize(device, &SectorSize);
if (SectorSize > 0)
{
/* Open file */
card_file CardFile;
CardError = CARD_Open(device, filename, &CardFile);
if (CardError)
{
sprintf(action, "Unable to open file (%d)", CardError);
GUI_WaitPrompt("Error",action);
CARD_Unmount(device);
return 0;
}
/* Get file size */
filesize = CardFile.len;
if (filesize % SectorSize)
filesize = ((filesize / SectorSize) + 1) * SectorSize;
/* Read file sectors */
while (filesize > 0)
{
CARD_Read(&CardFile, &savebuffer[done], SectorSize, done);
done += SectorSize;
filesize -= SectorSize;
}
CARD_Close(&CardFile);
CARD_Unmount(device);
}
else
{
sprintf(action, "Invalid sector size (%d)", CardError);
GUI_WaitPrompt("Error",action);
CARD_Unmount(device);
return 0;
}
}
else
{
GUI_WaitPrompt("Error","Unable to mount memory card");
return 0;
}
}
if (slot > 0)
{
/* Load state */
if (!state_load(&savebuffer[offset]))
{
GUI_WaitPrompt("Error","Version is not compatible !");
return 0;
}
}
else
{
/* Load SRAM & update CRC */
memcpy(sram.sram, &savebuffer[offset], 0x10000);
sram.crc = crc32(0, &sram.sram[0], 0x10000);
}
GUI_MsgBoxClose();
return 1;
}
int slot_save(int slot, int device)
{
char filename[MAXPATHLEN];
int filesize, done = 0;
int offset = device ? 2112 : 0;
/* clean buffer */
memset(savebuffer, 0, STATE_SIZE);
if (slot > 0)
{
GUI_MsgBoxOpen("Information","Saving State ...",1);
filesize = state_save(&savebuffer[offset]);
}
else
{
GUI_MsgBoxOpen("Information","Saving SRAM ...",1);
memcpy(&savebuffer[offset], sram.sram, 0x10000);
sram.crc = crc32(0, &sram.sram[0], 0x10000);
filesize = 0x10000;
}
if (!device)
{
/* FAT support */
if (slot > 0)
sprintf(filename, "%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
else
sprintf(filename, "%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
/* Open file */
FILE *fp = fopen(filename, "wb");
if (fp)
{
/* Read into buffer (2k blocks) */
while (filesize > FATCHUNK)
{
fwrite(savebuffer + done, FATCHUNK, 1, fp);
done += FATCHUNK;
filesize -= FATCHUNK;
}
/* Write remaining bytes */
fwrite(savebuffer + done, filesize, 1, fp);
done += filesize;
fclose(fp);
if (slot)
{
/* save screenshot */
sprintf(filename,"%s/saves/%s__%d.png", DEFAULT_PATH, rom_filename, slot - 1);
gxSaveScreenshot(filename);
}
}
else
{
GUI_WaitPrompt("Error","Unable to open file !");
return 0;
}
}
else
{
/* Memory Card support */
if (slot > 0)
sprintf(filename, "MD-%04X.gp%d", realchecksum, slot - 1);
else
sprintf(filename, "MD-%04X.srm", realchecksum);
/* Initialise the CARD system */
char action[80];
memset(&SysArea, 0, CARD_WORKAREA);
CARD_Init("GENP", "00");
/* CARD slot */
device--;
/* Attempt to mount the card */
if (CardMount(device))
{
/* Retrieve the sector size */
u32 SectorSize = 0;
int CardError = CARD_GetSectorSize(device, &SectorSize);
if (SectorSize)
{
/* Build the output buffer */
char comment[2][32] = { {"Genesis Plus GX"}, {"SRAM Save"} };
strcpy (comment[1], filename);
memcpy (&savebuffer[0], &icon, 2048);
memcpy (&savebuffer[2048], &comment[0], 64);
/* Adjust file size */
filesize += 2112;
if (filesize % SectorSize)
filesize = ((filesize / SectorSize) + 1) * SectorSize;
/* Check if file already exists */
card_file CardFile;
if (CARD_Open(device, filename, &CardFile) == CARD_ERROR_READY)
{
int size = filesize - CardFile.len;
CARD_Close(&CardFile);
memset(&CardFile,0,sizeof(CardFile));
if (size > 0)
{
/* new file is bigger: check if there is enough space left */
CardError = CARD_Create(device, "TEMP", size, &CardFile);
if (CardError)
{
sprintf(action, "Not enough memory space left (%d)", CardError);
GUI_WaitPrompt("Error",action);
CARD_Unmount(device);
return 0;
}
CARD_Close(&CardFile);
memset(&CardFile,0,sizeof(CardFile));
CARD_Delete(device, "TEMP");
}
/* delete previously existing slot */
CARD_Delete(device, filename);
}
/* Create a new slot */
CardError = CARD_Create(device, filename, filesize, &CardFile);
if (CardError)
{
sprintf(action, "Unable to create file (%d)", CardError);
GUI_WaitPrompt("Error",action);
CARD_Unmount(device);
return 0;
}
/* Get current time */
time_t rawtime;
time(&rawtime);
/* Update file informations */
card_stat CardStatus;
CARD_GetStatus(device, CardFile.filenum, &CardStatus);
CardStatus.icon_addr = 0x0;
CardStatus.icon_fmt = 2;
CardStatus.icon_speed = 1;
CardStatus.comment_addr = 2048;
CardStatus.time = rawtime;
CARD_SetStatus(device, CardFile.filenum, &CardStatus);
/* Write file sectors */
while (filesize > 0)
{
CARD_Write(&CardFile, &savebuffer[done], SectorSize, done);
filesize -= SectorSize;
done += SectorSize;
}
/* Close file */
CARD_Close(&CardFile);
CARD_Unmount(device);
}
else
{
sprintf(action, "Invalid sector size (%d)", CardError);
GUI_WaitPrompt("Error",action);
CARD_Unmount(device);
return 0;
}
}
else
{
GUI_WaitPrompt("Error","Unable to mount memory card");
return 0;
}
}
GUI_MsgBoxClose();
return 1;
}
Reference in New Issue View Git Blame Copy Permalink