mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-12-05 00:44:19 +01:00
65984b9102
- added: option to disable AA filtering
(snes graphics 'crisper', AA now default OFF)
- added: mapped zooming and turbo mode to classic controller
- added: preliminary usb support (loading)
- changed: sram and freezes now saved by filename, not internal romname.
If you have multiple versions of the same game, you can now have
srams and freezes for each version. A prompt to convert to the
new naming is provided for sram only.
- changed: by default, autoload/save sram and freeze enabled
446 lines
12 KiB
C++
446 lines
12 KiB
C++
/****************************************************************************
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* Snes9x 1.50
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*
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* Nintendo Gamecube Port
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* softdev July 2006
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* crunchy2 May 2007
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*
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* sdload.cpp
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*
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* Load ROMS from SD Card
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****************************************************************************/
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#include <gccore.h>
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#include <stdio.h>
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#include <string.h>
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#include <ogcsys.h>
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#include "sdload.h"
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#include "unzip.h"
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#include "memmap.h"
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#include "video.h"
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#include "ftfont.h"
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#include "dvd.h"
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#include "filesel.h"
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#include "sram.h"
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#include "preferences.h"
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#include <zlib.h>
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extern unsigned char savebuffer[];
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extern char output[16384];
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FILE * filehandle;
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char currSDdir[MAXPATHLEN];
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extern int offset;
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extern int selection;
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extern int loadtype;
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extern FILEENTRIES filelist[MAXFILES];
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/***************************************************************************
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* FileSortCallback
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*
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* Quick sort callback to sort file entries with the following order:
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* .
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* ..
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* <dirs>
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* <files>
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***************************************************************************/
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static int FileSortCallback(const void *f1, const void *f2)
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{
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/* Special case for implicit directories */
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if(((FILEENTRIES *)f1)->filename[0] == '.' || ((FILEENTRIES *)f2)->filename[0] == '.')
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{
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if(strcmp(((FILEENTRIES *)f1)->filename, ".") == 0) { return -1; }
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if(strcmp(((FILEENTRIES *)f2)->filename, ".") == 0) { return 1; }
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if(strcmp(((FILEENTRIES *)f1)->filename, "..") == 0) { return -1; }
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if(strcmp(((FILEENTRIES *)f2)->filename, "..") == 0) { return 1; }
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}
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/* If one is a file and one is a directory the directory is first. */
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if(((FILEENTRIES *)f1)->flags == 1 && ((FILEENTRIES *)f2)->flags == 0) return -1;
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if(((FILEENTRIES *)f1)->flags == 0 && ((FILEENTRIES *)f2)->flags == 1) return 1;
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return stricmp(((FILEENTRIES *)f1)->filename, ((FILEENTRIES *)f2)->filename);
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}
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/***************************************************************************
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* Update FAT (sdcard, usb) curent directory name
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***************************************************************************/
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int updateFATdirname()
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{
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int size=0;
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char *test;
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char temp[1024];
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/* current directory doesn't change */
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if (strcmp(filelist[selection].filename,".") == 0) return 0;
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/* go up to parent directory */
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else if (strcmp(filelist[selection].filename,"..") == 0)
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{
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/* determine last subdirectory namelength */
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sprintf(temp,"%s",currSDdir);
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test = strtok(temp,"/");
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while (test != NULL) {
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size = strlen(test);
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test = strtok(NULL,"/");
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}
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/* remove last subdirectory name */
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size = strlen(currSDdir) - size - 1;
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currSDdir[size] = 0;
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/* handles root name */
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if (strcmp(currSDdir, "/") == 0)
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return 1;
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}
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else /* Open a directory */
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{
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/* test new directory namelength */
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if ((strlen(currSDdir)+1+strlen(filelist[selection].filename)) < MAXPATHLEN)
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{
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/* handles root name */
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sprintf(temp, "/%s/..", SNESROMDIR);
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if (strcmp(currSDdir, temp) == 0)
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sprintf(currSDdir,"%s",ROOTSDDIR);
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/* update current directory name */
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sprintf(currSDdir, "%s/%s",currSDdir, filelist[selection].filename);
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return 1;
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} else {
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WaitPrompt((char*)"Dirname is too long !");
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return -1;
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}
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}
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}
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/***************************************************************************
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* Browse FAT (sdcard, usb) subdirectories
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***************************************************************************/
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int parseFATdirectory() {
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int nbfiles = 0;
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DIR_ITER *sddir;
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char filename[MAXPATHLEN];
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struct stat filestat;
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char msg[128];
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/* initialize selection */
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selection = offset = 0;
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/* open the directory */
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sddir = diropen(currSDdir);
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if (sddir == NULL) {
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/*** if we can't open the previous dir, open root dir ***/
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if (loadtype == LOAD_USB)
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sprintf(currSDdir,"fat4:/");
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else // LOAD_SDC
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//sprintf(currSDdir,"%s",ROOTSDDIR);
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sprintf(currSDdir,"fat3:/");
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sddir = diropen(currSDdir);
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WaitPrompt(msg);
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if (sddir == NULL) {
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sprintf(msg, "Error opening %s", currSDdir);
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WaitPrompt(msg);
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return 0;
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}
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}
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/* Move to DVD structure - this is required for the file selector */
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while(dirnext(sddir,filename,&filestat) == 0) {
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if(strcmp(filename,".") != 0) {
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memset(&filelist[nbfiles], 0, sizeof(FILEENTRIES));
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strncpy(filelist[nbfiles].filename, filename, MAXPATHLEN);
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strncpy(filelist[nbfiles].displayname, filename, MAXDISPLAY+1); // crop name for display
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filelist[nbfiles].length = filestat.st_size;
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filelist[nbfiles].flags = (filestat.st_mode & _IFDIR) == 0 ? 0 : 1;
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nbfiles++;
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}
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}
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/*** close directory ***/
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dirclose(sddir);
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/* Sort the file list */
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qsort(filelist, nbfiles, sizeof(FILEENTRIES), FileSortCallback);
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return nbfiles;
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}
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/****************************************************************************
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* LoadSDFile
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****************************************************************************/
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extern bool haveSDdir;
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extern bool haveUSBdir;
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int
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LoadSDFile (char *filename, int length)
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{
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char zipbuffer[2048];
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char filepath[MAXPATHLEN];
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FILE *handle;
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unsigned char *rbuffer;
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u32 size;
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rbuffer = (unsigned char *) Memory.ROM;
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/* Check filename length */
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if ((strlen(currSDdir)+1+strlen(filelist[selection].filename)) < MAXPATHLEN)
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sprintf(filepath, "%s/%s",currSDdir,filelist[selection].filename);
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else
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{
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WaitPrompt((char*) "Maximum Filename Length reached !");
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haveSDdir = 0; // reset everything before next access
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haveUSBdir = 0;
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return -1;
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}
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handle = fopen (filepath, "rb");
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if (handle > 0)
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{
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fread (zipbuffer, 1, 2048, handle);
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if (IsZipFile (zipbuffer))
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{
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/*** Unzip the ROM ***/
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size = UnZipBuffer (rbuffer, 0, 0, handle); // unzip from SD
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fclose (handle);
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return size;
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}
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else
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{
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/*** Just load the file up ***/
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fseek(handle, 0, SEEK_END);
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length = ftell(handle); // get filesize
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fseek(handle, 2048, SEEK_SET); // seek back to point where we left off
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sprintf (filepath, "Loading %d bytes", length);
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ShowAction (filepath);
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memcpy (rbuffer, zipbuffer, 2048); // copy what we already read
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fread (rbuffer + 2048, 1, length - 2048, handle);
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fclose (handle);
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return length;
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}
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}
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else
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{
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WaitPrompt((char*) "Error opening file");
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return 0;
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}
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return 0;
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}
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/****************************************************************************
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* Load savebuffer from SD card file
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****************************************************************************/
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int
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LoadBufferFromSD (char *filepath, bool silent)
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{
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FILE *handle;
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int offset = 0;
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int read = 0;
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handle = fopen (filepath, "rb");
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if (handle <= 0)
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{
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if ( !silent )
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{
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char msg[100];
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sprintf(msg, "Couldn't open %s", filepath);
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WaitPrompt (msg);
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}
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return 0;
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}
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memset (savebuffer, 0, 0x22000);
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/*** This is really nice, just load the file and decode it ***/
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while ((read = fread (savebuffer + offset, 1, 1024, handle)) > 0)
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{
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offset += read;
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}
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fclose (handle);
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return offset;
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}
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/****************************************************************************
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* Write savebuffer to SD card file
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****************************************************************************/
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int
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SaveBufferToSD (char *filepath, int datasize, bool silent)
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{
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FILE *handle;
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if (datasize)
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{
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handle = fopen (filepath, "wb");
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if (handle <= 0)
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{
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char msg[100];
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sprintf(msg, "Couldn't save %s", filepath);
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WaitPrompt (msg);
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return 0;
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}
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fwrite (savebuffer, 1, datasize, handle);
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fclose (handle);
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}
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return datasize;
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}
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/****************************************************************************
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* Save SRAM to SD Card
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****************************************************************************/
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void SaveSRAMToSD (bool silent)
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{
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char filepath[1024];
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int datasize;
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int offset;
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if (!silent)
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ShowAction ((char*) "Saving SRAM to SD...");
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#ifdef SDUSE_LFN
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sprintf (filepath, "%s/%s/%s.srm", ROOTSDDIR, SNESSAVEDIR, Memory.ROMFilename);
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#else
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sprintf (filepath, "%s/%s/%08x.srm", ROOTSDDIR, SNESSAVEDIR, Memory.ROMCRC32);
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#endif
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datasize = prepareEXPORTsavedata ();
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if ( datasize )
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{
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offset = SaveBufferToSD (filepath, datasize, silent);
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if ( (offset > 0) && (!silent) )
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{
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sprintf (filepath, "Wrote %d bytes", offset);
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WaitPrompt (filepath);
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}
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}
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}
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/****************************************************************************
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* Load SRAM From SD Card
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****************************************************************************/
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void
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LoadSRAMFromSD (bool silent)
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{
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char filepath[MAXPATHLEN];
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int offset = 0;
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ShowAction ((char*) "Loading SRAM from SD...");
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// check for 'old' version of sram
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sprintf (filepath, "%s/%s/%s.srm", ROOTSDDIR, SNESSAVEDIR, Memory.ROMName); // Build old SRAM filename
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offset = LoadBufferFromSD (filepath, silent); // load file
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if (offset > 0) // old sram found
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{
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if (WaitPromptChoice ((char*)"Old SRAM found. Convert and delete?", (char*)"Cancel", (char*)"Do it"))
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{
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decodesavedata (offset);
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remove (filepath); // delete old sram
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SaveSRAMToSD (silent);
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}
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}
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//
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#ifdef SDUSE_LFN
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sprintf (filepath, "%s/%s/%s.srm", ROOTSDDIR, SNESSAVEDIR, Memory.ROMFilename);
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#else
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sprintf (filepath, "%s/%s/%08x.srm", ROOTSDDIR, SNESSAVEDIR, Memory.ROMCRC32);
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#endif
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offset = LoadBufferFromSD (filepath, silent);
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if (offset > 0)
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{
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decodesavedata (offset);
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if ( !silent )
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{
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sprintf (filepath, "Loaded %d bytes", offset);
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WaitPrompt(filepath);
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}
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S9xSoftReset();
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}
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}
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/****************************************************************************
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* Save Preferences to SD Card
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****************************************************************************/
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void
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SavePrefsToSD (bool silent)
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{
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char filepath[1024];
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int datasize;
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int offset;
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if (!silent)
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ShowAction ((char*) "Saving prefs to SD...");
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#ifdef SDUSE_LFN
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sprintf (filepath, "%s/%s/%s", ROOTSDDIR, SNESSAVEDIR, PREFS_FILE_NAME);
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#else
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sprintf (filepath, "%s/%s/%s", ROOTSDDIR, SNESSAVEDIR, PREFS_FILE_NAME);
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#endif
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datasize = preparePrefsData ();
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offset = SaveBufferToSD (filepath, datasize, silent);
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if ( (offset > 0) && (!silent) )
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{
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sprintf (filepath, "Wrote %d bytes", offset);
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WaitPrompt (filepath);
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}
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}
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/****************************************************************************
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* Load Preferences from SD Card
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****************************************************************************/
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void
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LoadPrefsFromSD (bool silent)
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{
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char filepath[1024];
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int offset = 0;
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ShowAction ((char*) "Loading prefs from SD...");
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#ifdef SDUSE_LFN
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sprintf (filepath, "%s/%s/%s", ROOTSDDIR, SNESSAVEDIR, PREFS_FILE_NAME);
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#else
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sprintf (filepath, "%s/%s/%s", ROOTSDDIR, SNESSAVEDIR, PREFS_FILE_NAME);
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#endif
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offset = LoadBufferFromSD (filepath, silent);
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if (offset > 0)
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{
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decodePrefsData ();
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if ( !silent )
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{
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sprintf (filepath, "Loaded %d bytes", offset);
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WaitPrompt(filepath);
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}
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}
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}
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