mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-12 22:05:06 +01:00
541 lines
14 KiB
C
541 lines
14 KiB
C
/****************************************************************************
|
|
* Genesis Plus 1.2a
|
|
*
|
|
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald
|
|
*
|
|
* 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
|
|
*
|
|
* File Selection
|
|
***************************************************************************/
|
|
#include "shared.h"
|
|
#include "dvd.h"
|
|
#include "iso9660.h"
|
|
#include "font.h"
|
|
#include "unzip.h"
|
|
|
|
#define PAGESIZE 12
|
|
#define PADCAL 70
|
|
|
|
static int maxfiles;
|
|
u8 havedir = 0;
|
|
u8 haveSDdir = 0;
|
|
u8 UseSDCARD = 0;
|
|
sd_file *filehandle;
|
|
char rootSDdir[SDCARD_MAX_PATH_LEN];
|
|
int LoadFile (unsigned char *buffer);
|
|
int offset = 0;
|
|
int selection = 0;
|
|
int old_selection = 0;
|
|
int old_offset = 0;
|
|
|
|
extern void reloadrom ();
|
|
|
|
/***************************************************************************
|
|
* Showfile screen
|
|
***************************************************************************/
|
|
static void ShowFiles (int offset, int selection)
|
|
{
|
|
int i, j;
|
|
char text[MAXJOLIET+2];
|
|
|
|
ClearScreen ();
|
|
j = 0;
|
|
|
|
for (i = offset; i < (offset + PAGESIZE) && (i < maxfiles); i++)
|
|
{
|
|
memset(text,0,MAXJOLIET+2);
|
|
if (filelist[i].flags) sprintf(text, "[%s]", filelist[i].filename + filelist[i].filename_offset);
|
|
else sprintf (text, "%s", filelist[i].filename + filelist[i].filename_offset);
|
|
|
|
if (j == (selection - offset)) WriteCentre_HL ((j * fheight) + 120, text);
|
|
else WriteCentre ((j * fheight) + 120, text);
|
|
j++;
|
|
}
|
|
SetScreen ();
|
|
}
|
|
|
|
/***************************************************************************
|
|
* Update SDCARD curent directory name
|
|
***************************************************************************/
|
|
int updateSDdirname()
|
|
{
|
|
int size=0;
|
|
char *test;
|
|
char temp[1024];
|
|
|
|
/* current directory doesn't change */
|
|
if (strcmp(filelist[selection].filename,".") == 0) return 0;
|
|
|
|
/* go up to parent directory */
|
|
else if (strcmp(filelist[selection].filename,"..") == 0)
|
|
{
|
|
/* determine last subdirectory namelength */
|
|
sprintf(temp,"%s",rootSDdir);
|
|
test= strtok(temp,"\\");
|
|
while (test != NULL)
|
|
{
|
|
size = strlen(test);
|
|
test = strtok(NULL,"\\");
|
|
}
|
|
|
|
/* remove last subdirectory name */
|
|
size = strlen(rootSDdir) - size - 1;
|
|
rootSDdir[size] = 0;
|
|
|
|
/* handles root name */
|
|
if (strcmp(rootSDdir,"dev0:") == 0) sprintf(rootSDdir,"dev0:\\genplus\\..");
|
|
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
/* test new directory namelength */
|
|
if ((strlen(rootSDdir)+1+strlen(filelist[selection].filename)) < SDCARD_MAX_PATH_LEN)
|
|
{
|
|
/* handles root name */
|
|
if (strcmp(rootSDdir,"dev0:\\genplus\\..") == 0) sprintf(rootSDdir,"dev0:");
|
|
|
|
/* update current directory name */
|
|
sprintf(rootSDdir, "%s\\%s",rootSDdir, filelist[selection].filename);
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
WaitPrompt ("Dirname is too long !");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/***************************************************************************
|
|
* Browse SDCARD subdirectories
|
|
***************************************************************************/
|
|
int parseSDdirectory()
|
|
{
|
|
int entries = 0;
|
|
int nbfiles = 0;
|
|
DIR *sddir = NULL;
|
|
|
|
/* Get a list of files from the actual root directory */
|
|
entries = SDCARD_ReadDir (rootSDdir, &sddir);
|
|
|
|
if (entries < 0) entries = 0;
|
|
if (entries > MAXFILES) entries = MAXFILES;
|
|
|
|
/* Move to DVD structure - this is required for the file selector */
|
|
while (entries)
|
|
{
|
|
memset (&filelist[nbfiles], 0, sizeof (FILEENTRIES));
|
|
strncpy(filelist[nbfiles].filename,sddir[nbfiles].fname,MAXJOLIET);
|
|
filelist[nbfiles].filename[MAXJOLIET-1] = 0;
|
|
filelist[nbfiles].length = sddir[nbfiles].fsize;
|
|
filelist[nbfiles].flags = (char)(sddir[nbfiles].fattr & SDCARD_ATTR_DIR);
|
|
nbfiles++;
|
|
entries--;
|
|
}
|
|
|
|
/*** Release memory ***/
|
|
free(sddir);
|
|
|
|
return nbfiles;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* FileSelector
|
|
*
|
|
* Let user select a file from the File listing
|
|
****************************************************************************/
|
|
void FileSelector ()
|
|
{
|
|
short p;
|
|
signed char a,b;
|
|
int haverom = 0;
|
|
int redraw = 1;
|
|
int go_up = 0;
|
|
int i,size;
|
|
|
|
while (haverom == 0)
|
|
{
|
|
if (redraw) ShowFiles (offset, selection);
|
|
redraw = 0;
|
|
p = PAD_ButtonsDown (0);
|
|
a = PAD_StickY (0);
|
|
b = PAD_StickX (0);
|
|
|
|
/*
|
|
* check selection screen changes
|
|
*/
|
|
|
|
/* scroll displayed filename */
|
|
if ((p & PAD_BUTTON_LEFT) || (b < -PADCAL))
|
|
{
|
|
if (filelist[selection].filename_offset > 0)
|
|
{
|
|
filelist[selection].filename_offset --;
|
|
redraw = 1;
|
|
}
|
|
}
|
|
else if ((p & PAD_BUTTON_RIGHT) || (b > PADCAL))
|
|
{
|
|
size = 0;
|
|
for (i=filelist[selection].filename_offset; i<strlen(filelist[selection].filename); i++)
|
|
size += font_size[(int)filelist[selection].filename[i]];
|
|
|
|
if (size > back_framewidth)
|
|
{
|
|
filelist[selection].filename_offset ++;
|
|
redraw = 1;
|
|
}
|
|
}
|
|
|
|
/* highlight next item */
|
|
else if ((p & PAD_BUTTON_DOWN) || (a < -PADCAL))
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
selection++;
|
|
if (selection == maxfiles) selection = offset = 0;
|
|
if ((selection - offset) >= PAGESIZE) offset += PAGESIZE;
|
|
redraw = 1;
|
|
}
|
|
|
|
/* highlight previous item */
|
|
else if ((p & PAD_BUTTON_UP) || (a > PADCAL))
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
selection--;
|
|
if (selection < 0)
|
|
{
|
|
selection = maxfiles - 1;
|
|
offset = selection - PAGESIZE + 1;
|
|
}
|
|
if (selection < offset) offset -= PAGESIZE;
|
|
if (offset < 0) offset = 0;
|
|
redraw = 1;
|
|
}
|
|
|
|
/* go back one page */
|
|
else if (p & PAD_TRIGGER_L)
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
selection -= PAGESIZE;
|
|
if (selection < 0)
|
|
{
|
|
selection = maxfiles - 1;
|
|
offset = selection - PAGESIZE + 1;
|
|
}
|
|
if (selection < offset) offset -= PAGESIZE;
|
|
if (offset < 0) offset = 0;
|
|
redraw = 1;
|
|
}
|
|
|
|
/* go forward one page */
|
|
else if (p & PAD_TRIGGER_R)
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
selection += PAGESIZE;
|
|
if (selection > maxfiles - 1) selection = offset = 0;
|
|
if ((selection - offset) >= PAGESIZE) offset += PAGESIZE;
|
|
redraw = 1;
|
|
}
|
|
|
|
/*
|
|
* Check pressed key
|
|
*/
|
|
|
|
/* go up one directory or quit */
|
|
if (p & PAD_BUTTON_B)
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
if (((!UseSDCARD) && (basedir == rootdir)) ||
|
|
(UseSDCARD && strcmp(rootSDdir,"dev0:\\genplus\\..") == 0)) return;
|
|
go_up = 1;
|
|
}
|
|
|
|
/* quit */
|
|
if (p & PAD_TRIGGER_Z)
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
return;
|
|
}
|
|
|
|
/* open selected file or directory */
|
|
if ((p & PAD_BUTTON_A) || go_up)
|
|
{
|
|
filelist[selection].filename_offset = 0;
|
|
if (go_up)
|
|
{
|
|
go_up = 0;
|
|
selection = 1;
|
|
}
|
|
|
|
/*** This is directory ***/
|
|
if (filelist[selection].flags)
|
|
{
|
|
if (UseSDCARD) /* SDCARD directory handler */
|
|
{
|
|
/* update current directory */
|
|
int status = updateSDdirname();
|
|
|
|
/* move to new directory */
|
|
if (status == 1)
|
|
{
|
|
/* reinit selector (previous value is saved for one level) */
|
|
if (selection == 1)
|
|
{
|
|
selection = old_selection;
|
|
offset = old_offset;
|
|
old_selection = 0;
|
|
old_offset = 0;
|
|
}
|
|
else
|
|
{
|
|
/* save current selector value */
|
|
old_selection = selection;
|
|
old_offset = offset;
|
|
selection = 0;
|
|
offset = 0;
|
|
}
|
|
|
|
|
|
/* set new entry list */
|
|
maxfiles = parseSDdirectory();
|
|
if (!maxfiles)
|
|
{
|
|
/* quit */
|
|
WaitPrompt ("Error reading directory !");
|
|
haverom = 1;
|
|
haveSDdir = 0;
|
|
}
|
|
}
|
|
else if (status == -1)
|
|
{
|
|
/* quit */
|
|
haverom = 1;
|
|
haveSDdir = 0;
|
|
}
|
|
}
|
|
else /* DVD directory handler */
|
|
{
|
|
/* move to a new directory */
|
|
if (selection != 0)
|
|
{
|
|
/* update current directory */
|
|
rootdir = filelist[selection].offset;
|
|
rootdirlength = filelist[selection].length;
|
|
|
|
/* reinit selector (previous value is saved for one level) */
|
|
if (selection == 1)
|
|
{
|
|
selection = old_selection;
|
|
offset = old_offset;
|
|
old_selection = 0;
|
|
old_offset = 0;
|
|
}
|
|
else
|
|
{
|
|
/* save current selector value */
|
|
old_selection = selection;
|
|
old_offset = offset;
|
|
selection = 0;
|
|
offset = 0;
|
|
}
|
|
|
|
/* get new entry list */
|
|
maxfiles = parsedirectory ();
|
|
}
|
|
}
|
|
}
|
|
else /*** This is a file ***/
|
|
{
|
|
rootdir = filelist[selection].offset;
|
|
rootdirlength = filelist[selection].length;
|
|
genromsize = LoadFile (cart_rom);
|
|
reloadrom ();
|
|
haverom = 1;
|
|
}
|
|
redraw = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* OpenDVD
|
|
*
|
|
* Function to load a DVD directory and display to user.
|
|
****************************************************************************/
|
|
void OpenDVD ()
|
|
{
|
|
UseSDCARD = 0;
|
|
if (!getpvd())
|
|
{
|
|
ShowAction("Mounting DVD ... Wait");
|
|
DVD_Mount();
|
|
havedir = 0;
|
|
if (!getpvd())
|
|
{
|
|
WaitPrompt ("Failed to mount DVD");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (havedir == 0)
|
|
{
|
|
/* don't mess with SD entries */
|
|
haveSDdir = 0;
|
|
|
|
/* reinit selector */
|
|
rootdir = basedir;
|
|
old_selection = selection = offset = old_offset = 0;
|
|
|
|
if ((maxfiles = parsedirectory ()))
|
|
{
|
|
FileSelector ();
|
|
havedir = 1;
|
|
}
|
|
}
|
|
else FileSelector ();
|
|
}
|
|
|
|
/****************************************************************************
|
|
* OpenSD updated to use the new libogc. Written by softdev and pasted
|
|
* into this code by Drack.
|
|
* Modified for subdirectory browing & quick filelist recovery
|
|
* Enjoy!
|
|
*****************************************************************************/
|
|
int OpenSD ()
|
|
{
|
|
UseSDCARD = 1;
|
|
|
|
if (haveSDdir == 0)
|
|
{
|
|
/* don't mess with DVD entries */
|
|
havedir = 0;
|
|
|
|
/* reinit selector */
|
|
old_selection = selection = offset = old_offset = 0;
|
|
|
|
/* Reset SDCARD root directory */
|
|
sprintf(rootSDdir,"dev0:\\genplus\\roms");
|
|
|
|
/* Parse initial root directory and get entries list */
|
|
ShowAction("Reading Directory ...");
|
|
if ((maxfiles = parseSDdirectory ()))
|
|
{
|
|
/* Select an entry */
|
|
FileSelector ();
|
|
|
|
/* memorize last entries list, actual root directory and selection for next access */
|
|
haveSDdir = 1;
|
|
}
|
|
else
|
|
{
|
|
/* no entries found */
|
|
WaitPrompt ("Error reading dev0:\\genplus\\roms");
|
|
return 0;
|
|
}
|
|
}
|
|
/* Retrieve previous entries list and made a new selection */
|
|
else FileSelector ();
|
|
|
|
return 1;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* SDCard Get Info
|
|
****************************************************************************/
|
|
void GetSDInfo ()
|
|
{
|
|
char fname[SDCARD_MAX_PATH_LEN];
|
|
rootdirlength = 0;
|
|
|
|
/* Check filename length */
|
|
if ((strlen(rootSDdir)+1+strlen(filelist[selection].filename)) < SDCARD_MAX_PATH_LEN)
|
|
sprintf(fname, "%s\\%s",rootSDdir,filelist[selection].filename);
|
|
|
|
else
|
|
{
|
|
WaitPrompt ("Maximum Filename Length reached !");
|
|
haveSDdir = 0; // reset everything before next access
|
|
}
|
|
|
|
filehandle = SDCARD_OpenFile (fname, "rb");
|
|
if (filehandle == NULL)
|
|
{
|
|
WaitPrompt ("Unable to open file!");
|
|
return;
|
|
}
|
|
rootdirlength = SDCARD_GetFileSize (filehandle);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* LoadFile
|
|
*
|
|
* This function will load a file from DVD or SDCARD, in BIN, SMD or ZIP format.
|
|
* The values for offset and length are inherited from rootdir and
|
|
* rootdirlength.
|
|
*
|
|
* The buffer parameter should re-use the initial ROM buffer.
|
|
****************************************************************************/
|
|
int LoadFile (unsigned char *buffer)
|
|
{
|
|
int offset;
|
|
int blocks;
|
|
int i;
|
|
u64 discoffset;
|
|
char readbuffer[2048];
|
|
|
|
/* SDCard Addition */
|
|
if (UseSDCARD) GetSDInfo ();
|
|
|
|
/* How many 2k blocks to read */
|
|
if (rootdirlength == 0) return 0;
|
|
blocks = rootdirlength / 2048;
|
|
|
|
offset = 0;
|
|
discoffset = rootdir;
|
|
ShowAction ("Loading ... Wait");
|
|
|
|
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, 2048);
|
|
else dvd_read (&readbuffer, 2048, discoffset);
|
|
|
|
if (!IsZipFile ((char *) readbuffer))
|
|
{
|
|
if (UseSDCARD) SDCARD_SeekFile (filehandle, 0, SDCARD_SEEK_SET);
|
|
|
|
for (i = 0; i < blocks; i++)
|
|
{
|
|
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, 2048);
|
|
else dvd_read(readbuffer, 2048, discoffset);
|
|
memcpy (buffer + offset, readbuffer, 2048);
|
|
offset += 2048;
|
|
discoffset += 2048;
|
|
}
|
|
|
|
/* And final cleanup */
|
|
if (rootdirlength % 2048)
|
|
{
|
|
i = rootdirlength % 2048;
|
|
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, i);
|
|
else dvd_read (readbuffer, 2048, discoffset);
|
|
memcpy (buffer + offset, readbuffer, i);
|
|
}
|
|
}
|
|
else return UnZipBuffer (buffer, discoffset, rootdirlength);
|
|
|
|
if (UseSDCARD) SDCARD_CloseFile (filehandle);
|
|
|
|
return rootdirlength;
|
|
}
|