mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-24 19:46:58 +01:00
6fb28b823a
- compiles with latest devkitppc (r15) - now uses libfat (can use front sd slot on wii) - updated menu items a bit - wiimote support - fixed: autoload sram/freeze - fixed: rom plays immediately after loading
448 lines
11 KiB
C++
448 lines
11 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 "ngcunzip.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 rootSDdir[MAXPATHLEN] = "fat:/";
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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 FILEENTRIES filelist[MAXFILES];
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/***************************************************************************
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* Update SDCARD curent directory name
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***************************************************************************/
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int updateSDdirname()
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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 SDCARD subdirectories
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***************************************************************************/
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int parseSDdirectory() {
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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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sprintf(currSDdir,"%s",rootSDdir); // if we can't open the previous dir, open root dir
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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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return nbfiles;
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}
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/****************************************************************************
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* LoadSDFile
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****************************************************************************/
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extern int haveSDdir;
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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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char *rbuffer;
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PKZIPHEADER pkzip;
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z_stream zs;
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int res, outbytes = 0;
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int size;
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int have;
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rbuffer = (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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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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memcpy (&pkzip, zipbuffer, sizeof (PKZIPHEADER));
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pkzip.uncompressedSize = FLIP32 (pkzip.uncompressedSize);
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memset (&zs, 0, sizeof (zs));
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zs.zalloc = Z_NULL;
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zs.zfree = Z_NULL;
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zs.opaque = Z_NULL;
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zs.avail_in = 0;
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zs.next_in = Z_NULL;
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res = inflateInit2 (&zs, -MAX_WBITS);
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if (res != Z_OK)
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{
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fclose (handle);
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return 0;
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}
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size = (sizeof (PKZIPHEADER) +
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FLIP16 (pkzip.filenameLength) +
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FLIP16 (pkzip.extraDataLength));
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do
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{
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zs.avail_in = 2048 - size;
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zs.next_in = (Bytef *) zipbuffer + size;
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do
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{
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zs.avail_out = 16384;
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zs.next_out = (Bytef *) output;
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res = inflate (&zs, Z_NO_FLUSH);
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have = 16384 - zs.avail_out;
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if (have)
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{
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memcpy (rbuffer + outbytes, output, have);
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outbytes += have;
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}
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}
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while (zs.avail_out == 0);
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sprintf (filepath, "Read %d bytes of %d", outbytes,
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pkzip.uncompressedSize);
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//ShowAction (filepath);
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ShowProgress (filepath, outbytes, pkzip.uncompressedSize);
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size = 0;
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fread (zipbuffer, 1, 2048, handle);
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}
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while (res != Z_STREAM_END
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&& (u32) outbytes < pkzip.uncompressedSize);
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inflateEnd (&zs);
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fclose (handle);
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return pkzip.uncompressedSize;
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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 (int slot, 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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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.ROMName);
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#else
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sprintf (filepath, "%s/SNESSAVE/%08x.srm", rootSDdir, 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 (int slot, 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 SRAM from SD...");
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#ifdef SDUSE_LFN
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sprintf (filepath, "%s/%s/%s.srm", rootSDdir, SNESSAVEDIR, Memory.ROMName);
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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 (int slot, 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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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 (int slot, 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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