/****************************************************************************
* LoadFile
*
* This function will load a game file into the ROM buffer.
* This functions return the actual size of data copied into the buffer
*
****************************************************************************/
int LoadFile(int selection)
{
int size, cd_mode1, filetype;
char filename[MAXPATHLEN];
/* file path */
char *filepath = (deviceType == TYPE_RECENT) ? history.entries[selection].filepath : fileDir;
/* full filename */
sprintf(filename, "%s%s", filepath, filelist[selection].filename);
/* DVD hot swap */
if (!strncmp(filepath, rootdir[TYPE_DVD], strlen(rootdir[TYPE_DVD])))
{
/* Check if file is still accessible */
struct stat filestat;
if(stat(filename, &filestat) != 0)
{
/* If not, try to mount DVD */
if (!MountDVD()) return 0;
}
}
/* open message box */
GUI_MsgBoxOpen("Information", "Loading game...", 1);
/* no cartridge or CD game loaded */
size = cd_mode1 = 0;
/* check if virtual CD tray was open */
if ((system_hw == SYSTEM_MCD) && (cdd.status == CD_OPEN))
{
/* swap CD image file in (without changing region, system,...) */
size = cdd_load(filename, (char *)(cdc.ram));
/* check if a cartridge is currently loaded */
if (scd.cartridge.boot)
{
/* CD Mode 1 */
cd_mode1 = size;
}
else
{
/* update game informations from CD image file header */
getrominfo((char *)(cdc.ram));
}
}
/* no CD image file loaded */
if (!size)
{
/* close CD tray to force system reset */
cdd.status = NO_DISC;
/* load game file */
size = load_rom(filename);
}
if (size > 0)
{
/* do not update game basename if a CD was loaded with a cartridge (Mode 1) */
if (cd_mode1)
{
/* add CD image file to history list */
filetype = 1;
}
else
{
/* auto-save previous game state */
slot_autosave(config.s_default,config.s_device);
/* update game basename (for screenshot, save & cheat files) */
if (romtype & SYSTEM_SMS)
{
/* Master System ROM file */
filetype = 2;
sprintf(rom_filename,"ms/%s",filelist[selection].filename);
}
else if (romtype & SYSTEM_GG)
{
/* Game Gear ROM file */
filetype = 3;
sprintf(rom_filename,"gg/%s",filelist[selection].filename);
}
else if (romtype == SYSTEM_SG)
{
/* SG-1000 ROM file */
filetype = 4;
sprintf(rom_filename,"sg/%s",filelist[selection].filename);
}
else if (romtype == SYSTEM_MCD)
{
/* CD image file */
filetype = 1;
sprintf(rom_filename,"cd/%s",filelist[selection].filename);
}
else
{
/* by default, Genesis ROM file */
filetype = 0;
sprintf(rom_filename,"md/%s",filelist[selection].filename);
}
/* remove file extension */
int i = strlen(rom_filename) - 1;
while ((i > 0) && (rom_filename[i] != '.')) i--;
if (i > 0) rom_filename[i] = 0;
}
/* add/move the file to the top of the history. */
history_add_file(filepath, filelist[selection].filename, filetype);
/* recent file list may have changed */
if (deviceType == TYPE_RECENT) deviceType = -1;
/* close message box */
GUI_MsgBoxClose();
/* valid image has been loaded */
return 1;
}
GUI_WaitPrompt("Error", "Unable to load game");
return 0;
}
/****************************************************************************
* FAT_LoadFile
*
* This function will load a BIN, SMD or ZIP file from DVD into the ROM buffer.
* This functions return the actual size of data copied into the buffer
*
****************************************************************************/
int FAT_LoadFile(u8 *buffer, u32 selection)
{
/* If loading from history then we need to setup a few more things. */
if(useHistory)
{
/* Get the parent folder for the file. */
strncpy(fatdir, history.entries[selection].filepath, MAXJOLIET-1);
fatdir[MAXJOLIET-1] = '\0';
/* Get the length of the file. This has to be done
* before calling LoadFile(). */
char filepath[MAXJOLIET];
struct stat filestat;
snprintf(filepath, MAXJOLIET-1, "%s%s", history.entries[selection].filepath, history.entries[selection].filename);
filepath[MAXJOLIET-1] = '\0';
if(stat(filepath, &filestat) == 0)
{
filelist[selection].length = filestat.st_size;
}
/* update filelist */
haveFATdir = 0;
}
/* file size */
int length = filelist[selection].length;
if (length > 0)
{
/* Add/move the file to the top of the history. */
history_add_file(fatdir, filelist[selection].filename);
/* full filename */
char fname[MAXPATHLEN];
sprintf(fname, "%s%s",fatdir,filelist[selection].filename);
/* open file */
FILE *sdfile = fopen(fname, "rb");
if (sdfile == NULL)
{
GUI_WaitPrompt("Error","Unable to open file !");
haveFATdir = 0;
return 0;
}
/* Read first data chunk */
unsigned char temp[FATCHUNK];
fread(temp, FATCHUNK, 1, sdfile);
fclose(sdfile);
/* determine file type */
if (!IsZipFile ((char *) temp))
{
/* re-open and read file */
sdfile = fopen(fname, "rb");
if (sdfile)
{
char msg[50];
sprintf(msg,"Loading %d bytes ...", length);
GUI_MsgBoxOpen("Information",msg,1);
int i = 0;
while (length > FATCHUNK)
{
fread(buffer+i, FATCHUNK, 1, sdfile);
length -= FATCHUNK;
i += FATCHUNK;
}
fread(buffer+i, length, 1, sdfile);
fclose(sdfile);
return filelist[selection].length;
}
}
else
{
/* unzip file */
return UnZipBuffer (buffer, 0, fname);
}
}
return 0;
}
