The-Homebrew-Cloud/Genesis-Plus-GX
2
0
Fork 0
mirror of https://github.com/ekeeke/Genesis-Plus-GX.git synced 2024-12-25 02:31:49 +01:00
Code Issues Packages Projects Releases Wiki Activity

Browse Source
This commit is contained in:
ekeeke31 2007-08-20 19:24:03 +00:00
parent fb745c3b0a
commit 844cdbe77d
6 changed files with 836 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
source/ngc/gui/filesel.c
View File

@ -24,9 +24,6 @@
#include "iso9660.h"
#include "font.h"
#include "unzip.h"
#include "diskio.h"
#include "vfat.h"
#define PAGESIZE 12
#define PADCAL 70
@ -35,15 +32,13 @@ 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;
VFATFS fs;
FSDIRENTRY f;
extern void reloadrom ();
@ -53,16 +48,16 @@ extern void reloadrom ();
static void ShowFiles (int offset, int selection)
{
int i, j;
char text[MAX_LONG_NAME+2];
char text[MAXJOLIET+2];
ClearScreen ();
j = 0;
for (i = offset; i < (offset + PAGESIZE) && (i < maxfiles); i++)
{
memset(text,0,MAX_LONG_NAME+2);
if (filelist[i].flags) sprintf(text, "[%s]", filelist[i].displayname + filelist[i].filename_offset);
else sprintf (text, "%s", filelist[i].displayname + filelist[i].filename_offset);
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);
@ -80,31 +75,48 @@ int updateSDdirname()
char *test;
char temp[1024];
/* current directory doesn't change */
if (strcmp(filelist[selection].filename,".") == 0) return 0;
/* go up to parent directory */
if (strcmp(filelist[selection].filename,"..") == 0)
else if (strcmp(filelist[selection].filename,"..") == 0)
{
/* determine last subdirectory namelength */
sprintf(temp,"%s",rootSDdir);
test= strtok(temp,"/");
test= strtok(temp,"\\");
while (test != NULL)
{
size = strlen(test);
test = strtok(NULL,"/");
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);
sprintf(rootSDdir, "%s\\%s",rootSDdir, filelist[selection].filename);
return 1;
}
else
{
WaitPrompt ("Dirname is too long !");
return -1;
}
}
}
/***************************************************************************
@ -112,26 +124,30 @@ int updateSDdirname()
***************************************************************************/
int parseSDdirectory()
{
int entries = 0;
int nbfiles = 0;
FSDIRENTRY fsdir;
DIR *sddir = NULL;
/* Get a list of files from the actual root directory */
int res = VFAT_opendir(0, &fsdir, rootSDdir);
entries = SDCARD_ReadDir (rootSDdir, &sddir);
if (res == FS_SUCCESS)
{
while ( VFAT_readdir(&fsdir) == FS_SUCCESS )
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));
strcpy(filelist[nbfiles].displayname, fsdir.longname);
strcpy(filelist[nbfiles].filename, fsdir.shortname);
filelist[nbfiles].length = fsdir.fsize;
filelist[nbfiles].flags = fsdir.dirent.attribute & ATTR_DIRECTORY;
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--;
}
VFAT_closedir(&fsdir);
}
/*** Release memory ***/
free(sddir);
return nbfiles;
}
@ -243,7 +259,7 @@ void FileSelector ()
{
filelist[selection].filename_offset = 0;
if (((!UseSDCARD) && (basedir == rootdir)) ||
(UseSDCARD && strcmp(rootSDdir,"/") == 0)) return;
(UseSDCARD && strcmp(rootSDdir,"dev0:\\genplus\\..") == 0)) return;
go_up = 1;
}
@ -261,14 +277,13 @@ void FileSelector ()
if (go_up)
{
go_up = 0;
selection = UseSDCARD ? 0 : 1;
selection = 1;
}
/*** This is directory ***/
if (filelist[selection].flags)
{
/* SDCARD directory handler */
if (UseSDCARD)
if (UseSDCARD) /* SDCARD directory handler */
{
/* update current directory */
int status = updateSDdirname();
@ -293,6 +308,7 @@ void FileSelector ()
offset = 0;
}
/* set new entry list */
maxfiles = parseSDdirectory();
if (!maxfiles)
@ -310,8 +326,7 @@ void FileSelector ()
haveSDdir = 0;
}
}
/* DVD directory handler */
else
else /* DVD directory handler */
{
/* move to a new directory */
if (selection != 0)
@ -402,7 +417,6 @@ void OpenDVD ()
int OpenSD ()
{
UseSDCARD = 1;
char msg[20];
if (haveSDdir == 0)
{
@ -413,18 +427,10 @@ int OpenSD ()
old_selection = selection = offset = old_offset = 0;
/* Reset SDCARD root directory */
sprintf(rootSDdir,"/genplus/roms");
sprintf(rootSDdir,"dev0:\\genplus\\roms");
/* Parse initial root directory and get entries list */
ShowAction("Reading Directory ...");
int res = VFAT_mount(FS_SLOTA, &fs);
if ( res != FS_TYPE_FAT16 )
{
sprintf(msg,"Error mounting SDCARD: %d", res);
WaitPrompt (msg);
return 0;
}
if ((maxfiles = parseSDdirectory ()))
{
/* Select an entry */
@ -436,7 +442,7 @@ int OpenSD ()
else
{
/* no entries found */
WaitPrompt ("Error reading /genplus/roms");
WaitPrompt ("Error reading dev0:\\genplus\\roms");
return 0;
}
}
@ -455,14 +461,22 @@ void GetSDInfo ()
rootdirlength = 0;
/* Check filename length */
sprintf(fname, "%s/%s",rootSDdir,filelist[selection].filename);
if ((strlen(rootSDdir)+1+strlen(filelist[selection].filename)) < SDCARD_MAX_PATH_LEN)
sprintf(fname, "%s\\%s",rootSDdir,filelist[selection].filename);
int res = VFAT_fopen(0, &f, fname, FS_READ);
if (res != FS_SUCCESS )
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);
}
/****************************************************************************
@ -493,16 +507,16 @@ int LoadFile (unsigned char *buffer)
discoffset = rootdir;
ShowAction ("Loading ... Wait");
if (UseSDCARD) VFAT_fread(&f, readbuffer, 2048);
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, 2048);
else dvd_read (&readbuffer, 2048, discoffset);
if (!IsZipFile ((char *) readbuffer))
{
if (UseSDCARD) VFAT_fseek(&f, 0, SEEK_SET);
if (UseSDCARD) SDCARD_SeekFile (filehandle, 0, SDCARD_SEEK_SET);
for (i = 0; i < blocks; i++)
{
if (UseSDCARD) VFAT_fread (&f, readbuffer, 2048);
if (UseSDCARD) SDCARD_ReadFile (filehandle, &readbuffer, 2048);
else dvd_read(readbuffer, 2048, discoffset);
memcpy (buffer + offset, readbuffer, 2048);
offset += 2048;
@ -513,14 +527,14 @@ int LoadFile (unsigned char *buffer)
if (rootdirlength % 2048)
{
i = rootdirlength % 2048;
if (UseSDCARD) VFAT_fread (&f, readbuffer, i);
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) VFAT_fclose(&f);
if (UseSDCARD) SDCARD_CloseFile (filehandle);
return rootdirlength;
}

526
source/ngc/gui/filesel.c.new Normal file
View File

@ -0,0 +1,526 @@
/****************************************************************************
* 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"
#include "diskio.h"
#include "vfat.h"
#define PAGESIZE 12
#define PADCAL 70
static int maxfiles;
u8 havedir = 0;
u8 haveSDdir = 0;
u8 UseSDCARD = 0;
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;
VFATFS fs;
FSDIRENTRY f;
extern void reloadrom ();
/***************************************************************************
* Showfile screen
***************************************************************************/
static void ShowFiles (int offset, int selection)
{
int i, j;
char text[MAX_LONG_NAME+2];
ClearScreen ();
j = 0;
for (i = offset; i < (offset + PAGESIZE) && (i < maxfiles); i++)
{
memset(text,0,MAX_LONG_NAME+2);
if (filelist[i].flags) sprintf(text, "[%s]", filelist[i].displayname + filelist[i].filename_offset);
else sprintf (text, "%s", filelist[i].displayname + 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];
/* go up to parent directory */
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;
return 1;
}
else
{
/* update current directory name */
sprintf(rootSDdir, "%s/%s",rootSDdir, filelist[selection].filename);
return 1;
}
}
/***************************************************************************
* Browse SDCARD subdirectories
***************************************************************************/
int parseSDdirectory()
{
int nbfiles = 0;
FSDIRENTRY fsdir;
/* Get a list of files from the actual root directory */
int res = VFAT_opendir(0, &fsdir, rootSDdir);
if (res == FS_SUCCESS)
{
while ( VFAT_readdir(&fsdir) == FS_SUCCESS )
{
memset (&filelist[nbfiles], 0, sizeof (FILEENTRIES));
strcpy(filelist[nbfiles].displayname, fsdir.longname);
strcpy(filelist[nbfiles].filename, fsdir.shortname);
filelist[nbfiles].length = fsdir.fsize;
filelist[nbfiles].flags = fsdir.dirent.attribute & ATTR_DIRECTORY;
nbfiles++;
}
VFAT_closedir(&fsdir);
}
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,"/") == 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 = UseSDCARD ? 0 : 1;
}
/*** This is directory ***/
if (filelist[selection].flags)
{
/* SDCARD directory handler */
if (UseSDCARD)
{
/* 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;
}
}
/* DVD directory handler */
else
{
/* 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;
char msg[20];
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,"/genplus/roms");
/* Parse initial root directory and get entries list */
ShowAction("Reading Directory ...");
int res = VFAT_mount(FS_SLOTA, &fs);
if ( res != FS_TYPE_FAT16 )
{
sprintf(msg,"Error mounting SDCARD: %d", res);
WaitPrompt (msg);
return 0;
}
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 /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 */
sprintf(fname, "%s/%s",rootSDdir,filelist[selection].filename);
int res = VFAT_fopen(0, &f, fname, FS_READ);
if (res != FS_SUCCESS )
{
WaitPrompt ("Unable to open file!");
return;
}
}
/****************************************************************************
* 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) VFAT_fread(&f, readbuffer, 2048);
else dvd_read (&readbuffer, 2048, discoffset);
if (!IsZipFile ((char *) readbuffer))
{
if (UseSDCARD) VFAT_fseek(&f, 0, SEEK_SET);
for (i = 0; i < blocks; i++)
{
if (UseSDCARD) VFAT_fread (&f, 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) VFAT_fread (&f, readbuffer, i);
else dvd_read (readbuffer, 2048, discoffset);
memcpy (buffer + offset, readbuffer, i);
}
}
else return UnZipBuffer (buffer, discoffset, rootdirlength);
if (UseSDCARD) VFAT_fclose(&f);
return rootdirlength;
}

7
source/ngc/gui/iso9660.h
View File

@ -22,17 +22,16 @@
* This is not intended as a complete guide to ISO9660.
* Here I use the bare minimum!
***************************************************************************/
#include "vfat.h"
#define MAXFILES 1000 /** Restrict to 1000 files per dir **/
#define MAXJOLIET 256
#define MAXFILES 1000 /** Restrict to 1000 files per dir **/
typedef struct
{
u64 offset;
unsigned int length;
char flags;
char filename[13];
char displayname[MAX_LONG_NAME];
char filename[MAXJOLIET];
u16 filename_offset;
} FILEENTRIES;

45
source/ngc/gui/iso9660.h.new Normal file
View File

@ -0,0 +1,45 @@
/****************************************************************************
* 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
*
* DVD ISO9660/Joliet Parsing
*
* This is not intended as a complete guide to ISO9660.
* Here I use the bare minimum!
***************************************************************************/
#include "vfat.h"
#define MAXFILES 1000 /** Restrict to 1000 files per dir **/
#define MAXJOLIET 256
typedef struct
{
u64 offset;
unsigned int length;
char flags;
char filename[13];
char displayname[MAX_LONG_NAME];
u16 filename_offset;
} FILEENTRIES;
extern u64 basedir;
extern u64 rootdir;
extern int rootdirlength;
extern int getpvd ();
extern int parsedirectory ();
extern FILEENTRIES filelist[MAXFILES];

13
source/ngc/unzip.c
View File

@ -26,11 +26,8 @@
#include "shared.h"
#include "dvd.h"
#include "font.h"
#include "diskio.h"
#include "vfat.h"
extern VFATFS fs;
extern FSDIRENTRY f;
extern sd_file *filehandle;
extern u8 UseSDCARD;
/*
@ -114,8 +111,8 @@ int UnZipBuffer (unsigned char *outbuffer, u64 discoffset, int length)
/*** Read Zip Header ***/
if ( UseSDCARD )
{
VFAT_fseek(&f, 0, SEEK_SET);
VFAT_fread(&f, readbuffer, 2048);
SDCARD_SeekFile(filehandle, 0, SDCARD_SEEK_SET);
SDCARD_ReadFile(filehandle, &readbuffer, 2048);
}
else dvd_read (&readbuffer, 2048, discoffset);
@ -174,14 +171,14 @@ int UnZipBuffer (unsigned char *outbuffer, u64 discoffset, int length)
zipchunk = ZIPCHUNK;
discoffset += 2048;
if (UseSDCARD) VFAT_fread(&f, readbuffer, 2048);
if (UseSDCARD) SDCARD_ReadFile(filehandle, &readbuffer, 2048);
else dvd_read (&readbuffer, 2048, discoffset);
}
while (res != Z_STREAM_END);
inflateEnd (&zs);
if ( UseSDCARD ) VFAT_fclose(&f);
if ( UseSDCARD ) SDCARD_CloseFile(filehandle);
if (res == Z_STREAM_END)
{

193
source/ngc/unzip.c.new Normal file
View File

@ -0,0 +1,193 @@
/****************************************************************************
* 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
*
* Nintendo Gamecube Zip Support
*
* Only partial support is included, in that only the first file within the archive
* is considered to be a Genesis ROM image.
***************************************************************************/
#include <zlib.h>
#include <sdcard.h>
#include "shared.h"
#include "dvd.h"
#include "font.h"
#include "diskio.h"
#include "vfat.h"
extern VFATFS fs;
extern FSDIRENTRY f;
extern u8 UseSDCARD;
/*
* PKWare Zip Header - adopted into zip standard
*/
#define PKZIPID 0x504b0304
#define MAXROM 0x500000
#define ZIPCHUNK 2048
/*
* Zip file header definition
*/
typedef struct
{
unsigned int zipid __attribute__ ((__packed__)); // 0x04034b50
unsigned short zipversion __attribute__ ((__packed__));
unsigned short zipflags __attribute__ ((__packed__));
unsigned short compressionMethod __attribute__ ((__packed__));
unsigned short lastmodtime __attribute__ ((__packed__));
unsigned short lastmoddate __attribute__ ((__packed__));
unsigned int crc32 __attribute__ ((__packed__));
unsigned int compressedSize __attribute__ ((__packed__));
unsigned int uncompressedSize __attribute__ ((__packed__));
unsigned short filenameLength __attribute__ ((__packed__));
unsigned short extraDataLength __attribute__ ((__packed__));
} PKZIPHEADER;
/*
* Zip files are stored little endian
* Support functions for short and int types
*/
static inline u32 FLIP32 (u32 b)
{
unsigned int c;
c = (b & 0xff000000) >> 24;
c |= (b & 0xff0000) >> 8;
c |= (b & 0xff00) << 8;
c |= (b & 0xff) << 24;
return c;
}
static inline u16 FLIP16 (u16 b)
{
u16 c;
c = (b & 0xff00) >> 8;
c |= (b & 0xff) << 8;
return c;
}
/****************************************************************************
* IsZipFile
*
* Returns TRUE when PKZIPID is first four characters of buffer
****************************************************************************/
int IsZipFile (char *buffer)
{
unsigned int *check;
check = (unsigned int *) buffer;
if (check[0] == PKZIPID) return 1;
return 0;
}
/*****************************************************************************
* UnZipBuffer
*
* It should be noted that there is a limit of 5MB total size for any ROM
******************************************************************************/
int UnZipBuffer (unsigned char *outbuffer, u64 discoffset, int length)
{
PKZIPHEADER pkzip;
int zipoffset = 0;
int zipchunk = 0;
char out[ZIPCHUNK];
z_stream zs;
int res;
int bufferoffset = 0;
int have = 0;
char readbuffer[2048];
char msg[128];
/*** Read Zip Header ***/
if ( UseSDCARD )
{
VFAT_fseek(&f, 0, SEEK_SET);
VFAT_fread(&f, readbuffer, 2048);
}
else dvd_read (&readbuffer, 2048, discoffset);
/*** Copy PKZip header to local, used as info ***/
memcpy (&pkzip, &readbuffer, sizeof (PKZIPHEADER));
sprintf (msg, "Unzipping %d bytes ... Wait", FLIP32 (pkzip.uncompressedSize));
ShowAction (msg);
/*** Prepare the zip stream ***/
memset (&zs, 0, sizeof (z_stream));
zs.zalloc = Z_NULL;
zs.zfree = Z_NULL;
zs.opaque = Z_NULL;
zs.avail_in = 0;
zs.next_in = Z_NULL;
res = inflateInit2 (&zs, -MAX_WBITS);
if (res != Z_OK) return 0;
/*** Set ZipChunk for first pass ***/
zipoffset = (sizeof (PKZIPHEADER) + FLIP16 (pkzip.filenameLength) + FLIP16 (pkzip.extraDataLength));
zipchunk = ZIPCHUNK - zipoffset;
/*** Now do it! ***/
do
{
zs.avail_in = zipchunk;
zs.next_in = (Bytef *) & readbuffer[zipoffset];
/*** Now inflate until input buffer is exhausted ***/
do
{
zs.avail_out = ZIPCHUNK;
zs.next_out = (Bytef *) & out;
res = inflate (&zs, Z_NO_FLUSH);
if (res == Z_MEM_ERROR)
{
inflateEnd (&zs);
return 0;
}
have = ZIPCHUNK - zs.avail_out;
if (have)
{
/*** Copy to normal block buffer ***/
memcpy (&outbuffer[bufferoffset], &out, have);
bufferoffset += have;
}
}
while (zs.avail_out == 0);
/*** Readup the next 2k block ***/
zipoffset = 0;
zipchunk = ZIPCHUNK;
discoffset += 2048;
if (UseSDCARD) VFAT_fread(&f, readbuffer, 2048);
else dvd_read (&readbuffer, 2048, discoffset);
}
while (res != Z_STREAM_END);
inflateEnd (&zs);
if ( UseSDCARD ) VFAT_fclose(&f);
if (res == Z_STREAM_END)
{
if (FLIP32 (pkzip.uncompressedSize) == (u32) bufferoffset) return bufferoffset;
else return FLIP32 (pkzip.uncompressedSize);
}
return 0;
}