mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-10 04:45:08 +01:00
646 lines
16 KiB
C
646 lines
16 KiB
C
/****************************************************************************
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* ROM Selection Interface
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*
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* The following features are implemented:
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* . SDCARD access with LFN support (through softdev's VFAT library)
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* . DVD access
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* . easy subdirectory browsing
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* . ROM browser
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* . alphabetical file sorting (Marty Disibio)
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* . load from history list (Marty Disibio)
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*
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***************************************************************************/
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#include "shared.h"
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#include "dvd.h"
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#include "iso9660.h"
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#include "font.h"
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#include "unzip.h"
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#include "history.h"
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#define PAGESIZE 12
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static int maxfiles;
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static int offset = 0;
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static int selection = 0;
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static int old_selection = 0;
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static int old_offset = 0;
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static char rootSDdir[256];
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static u8 haveDVDdir = 0;
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static u8 haveSDdir = 0;
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static u8 UseSDCARD = 0;
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static u8 UseHistory = 0;
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static int LoadFile (unsigned char *buffer);
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/* globals */
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FILE *sdfile;
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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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* ShowFiles
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*
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* Show filenames list in current directory
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***************************************************************************/
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static void ShowFiles (int offset, int selection)
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{
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int i, j;
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char text[MAXJOLIET+2];
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ClearScreen ();
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j = 0;
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for (i = offset; i < (offset + PAGESIZE) && (i < maxfiles); i++)
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{
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memset(text,0,MAXJOLIET+2);
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if (filelist[i].flags) sprintf(text, "[%s]", filelist[i].filename + filelist[i].filename_offset);
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else sprintf (text, "%s", filelist[i].filename + filelist[i].filename_offset);
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if (j == (selection - offset)) WriteCentre_HL ((j * fheight) + 120, text);
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else WriteCentre ((j * fheight) + 120, text);
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j++;
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}
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SetScreen ();
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}
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/***************************************************************************
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* updateSDdirname
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*
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* Update ROOT directory while browsing SDCARD
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***************************************************************************/
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static 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",rootSDdir);
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test= strtok(temp,"/");
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while (test != NULL)
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{
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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(rootSDdir) - size;
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rootSDdir[size-1] = 0;
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}
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else
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{
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sprintf(rootSDdir, "%s%s/",rootSDdir, filelist[selection].filename);
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}
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return 1;
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}
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/***************************************************************************
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* parseSDdirectory
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*
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* List files into one SDCARD directory
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***************************************************************************/
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static int parseSDdirectory()
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{
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int nbfiles = 0;
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char filename[MAXPATHLEN];
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struct stat filestat;
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/* open directory */
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DIR_ITER *dir = diropen (rootSDdir);
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if (dir == NULL)
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{
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sprintf(filename, "Error opening %s", rootSDdir);
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WaitPrompt (filename);
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return 0;
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}
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while (dirnext(dir, filename, &filestat) == 0)
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{
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if (strcmp(filename,".") != 0)
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{
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memset(&filelist[nbfiles], 0, sizeof (FILEENTRIES));
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sprintf(filelist[nbfiles].filename,"%s",filename);
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filelist[nbfiles].length = filestat.st_size;
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filelist[nbfiles].flags = (filestat.st_mode & S_IFDIR) ? 1 : 0;
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nbfiles++;
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}
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}
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dirclose(dir);
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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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* FileSelected
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*
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* Called when a file is selected by the user inside the FileSelector loop.
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****************************************************************************/
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static void FileSelected()
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{
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/* If loading from history then we need to setup a few more things. */
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if(UseHistory)
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{
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/* Get the parent folder for the file. */
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strncpy(rootSDdir, history.entries[selection].filepath, MAXJOLIET-1);
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rootSDdir[MAXJOLIET-1] = '\0';
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/* Get the length of the file. This has to be done
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* before calling LoadFile(). */
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char filepath[MAXJOLIET];
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struct stat filestat;
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snprintf(filepath, MAXJOLIET-1, "%s%s", history.entries[selection].filepath, history.entries[selection].filename);
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filepath[MAXJOLIET-1] = '\0';
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if(stat(filepath, &filestat) == 0)
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{
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filelist[selection].length = filestat.st_size;
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}
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}
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/* Add/move the file to the top of the history. */
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history_add_file(rootSDdir, filelist[selection].filename);
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rootdir = filelist[selection].offset;
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rootdirlength = filelist[selection].length;
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memfile_autosave();
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genromsize = LoadFile(cart_rom);
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reloadrom();
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memfile_autoload();
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}
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/****************************************************************************
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* FileSelector
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*
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* Let user select a file from the File listing
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****************************************************************************/
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static void FileSelector ()
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{
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short p;
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int haverom = 0;
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int redraw = 1;
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int go_up = 0;
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int i,size;
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while (haverom == 0)
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{
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if (redraw) ShowFiles (offset, selection);
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redraw = 0;
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p = ogc_input__getMenuButtons();
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/* scroll displayed filename */
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if (p & PAD_BUTTON_LEFT)
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{
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if (filelist[selection].filename_offset > 0)
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{
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filelist[selection].filename_offset --;
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redraw = 1;
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}
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}
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else if (p & PAD_BUTTON_RIGHT)
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{
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size = 0;
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for (i=filelist[selection].filename_offset; i<strlen(filelist[selection].filename); i++)
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size += font_size[(int)filelist[selection].filename[i]];
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if (size > back_framewidth)
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{
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filelist[selection].filename_offset ++;
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redraw = 1;
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}
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}
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/* highlight next item */
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else if (p & PAD_BUTTON_DOWN)
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{
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filelist[selection].filename_offset = 0;
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selection++;
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if (selection == maxfiles) selection = offset = 0;
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if ((selection - offset) >= PAGESIZE) offset += PAGESIZE;
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redraw = 1;
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}
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/* highlight previous item */
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else if (p & PAD_BUTTON_UP)
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{
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filelist[selection].filename_offset = 0;
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selection--;
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if (selection < 0)
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{
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selection = maxfiles - 1;
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offset = selection - PAGESIZE + 1;
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}
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if (selection < offset) offset -= PAGESIZE;
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if (offset < 0) offset = 0;
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redraw = 1;
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}
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/* go back one page */
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else if (p & PAD_TRIGGER_L)
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{
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filelist[selection].filename_offset = 0;
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selection -= PAGESIZE;
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if (selection < 0)
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{
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selection = maxfiles - 1;
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offset = selection - PAGESIZE + 1;
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}
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if (selection < offset) offset -= PAGESIZE;
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if (offset < 0) offset = 0;
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redraw = 1;
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}
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/* go forward one page */
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else if (p & PAD_TRIGGER_R)
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{
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filelist[selection].filename_offset = 0;
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selection += PAGESIZE;
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if (selection > maxfiles - 1) selection = offset = 0;
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if ((selection - offset) >= PAGESIZE) offset += PAGESIZE;
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redraw = 1;
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}
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/* go up one directory or quit */
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if (p & PAD_BUTTON_B)
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{
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filelist[selection].filename_offset = 0;
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if (UseSDCARD)
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{
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if (strcmp(filelist[0].filename,"..") != 0) return;
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}
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else
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{
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if (basedir == rootdir) return;
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}
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go_up = 1;
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}
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/* quit */
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if (p & PAD_TRIGGER_Z)
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{
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filelist[selection].filename_offset = 0;
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return;
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}
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/* open selected file or directory */
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if ((p & PAD_BUTTON_A) || go_up)
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{
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filelist[selection].filename_offset = 0;
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if (go_up)
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{
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/* select item #1 */
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go_up = 0;
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selection = UseSDCARD ? 0 : 1;
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}
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/*** This is directory ***/
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if (filelist[selection].flags)
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{
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/* SDCARD directory handler */
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if (UseSDCARD)
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{
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/* update current directory */
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if (updateSDdirname())
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{
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/* reinit selector (previous value is saved for one level) */
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if (selection == 0)
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{
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selection = old_selection;
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offset = old_offset;
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old_selection = 0;
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old_offset = 0;
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}
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else
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{
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/* save current selector value */
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old_selection = selection;
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old_offset = offset;
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selection = 0;
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offset = 0;
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}
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/* set new entry list */
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maxfiles = parseSDdirectory();
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if (!maxfiles)
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{
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/* quit */
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WaitPrompt ("No files found !");
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haverom = 1;
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haveSDdir = 0;
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}
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}
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}
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else /* DVD directory handler */
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{
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/* move to a new directory */
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if (selection != 0)
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{
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/* update current directory */
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rootdir = filelist[selection].offset;
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rootdirlength = filelist[selection].length;
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/* reinit selector (previous value is saved for one level) */
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if (selection == 1)
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{
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selection = old_selection;
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offset = old_offset;
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old_selection = 0;
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old_offset = 0;
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}
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else
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{
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/* save current selector value */
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old_selection = selection;
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old_offset = offset;
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selection = 0;
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offset = 0;
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}
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/* get new entry list */
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maxfiles = parseDVDdirectory ();
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}
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}
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}
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else /*** This is a file ***/
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{
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FileSelected();
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haverom = 1;
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}
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redraw = 1;
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}
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}
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}
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/****************************************************************************
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* OpenDVD
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*
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* Function to load a DVD directory and display to user.
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****************************************************************************/
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void OpenDVD ()
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{
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UseSDCARD = 0;
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UseHistory = 0;
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if (!getpvd())
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{
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ShowAction("Mounting DVD ... Wait");
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#ifndef HW_RVL
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DVD_Mount();
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#endif
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haveDVDdir = 0;
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if (!getpvd())
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{
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WaitPrompt ("Failed to mount DVD");
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return;
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}
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}
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if (haveDVDdir == 0)
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{
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/* don't mess with SD entries */
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haveSDdir = 0;
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/* reinit selector */
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rootdir = basedir;
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old_selection = selection = offset = old_offset = 0;
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if ((maxfiles = parseDVDdirectory ()))
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{
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FileSelector ();
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haveDVDdir = 1;
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}
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}
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else FileSelector ();
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}
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/****************************************************************************
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* OpenSD
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*
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* Function to load a SDCARD directory and display to user.
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****************************************************************************/
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int OpenSD ()
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{
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UseSDCARD = 1;
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UseHistory = 0;
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if (haveSDdir == 0)
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{
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/* don't mess with DVD entries */
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haveDVDdir = 0;
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/* reinit selector */
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old_selection = selection = offset = old_offset = 0;
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/* Reset SDCARD root directory */
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sprintf (rootSDdir, "/genplus/roms/");
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/* if directory doesn't exist, use root */
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DIR_ITER *dir = diropen(rootSDdir);
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if (dir == NULL) sprintf (rootSDdir, "fat:/");
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else dirclose(dir);
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}
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/* Parse root directory and get entries list */
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ShowAction("Reading Directory ...");
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if ((maxfiles = parseSDdirectory ()))
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{
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/* Select an entry */
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FileSelector ();
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/* memorize last entries list, actual root directory and selection for next access */
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haveSDdir = 1;
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}
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else
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{
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/* no entries found */
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WaitPrompt ("no files found !");
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haveSDdir = 0;
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return 0;
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}
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return 1;
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}
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void OpenHistory()
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{
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int i;
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UseSDCARD = 1;
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UseHistory = 1;
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/* don't mess with SD entries */
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haveSDdir = 0;
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/* reinit selector */
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old_selection = selection = offset = old_offset = 0;
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/* Reset SDCARD root directory */
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/* Make this empty because the history */
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/* entry will contain the entire path. */
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/*sprintf (rootSDdir, "");*/
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/* Recreate the file listing from the history
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* as if all of the roms were in the same directory. */
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ShowAction("Reading Files ...");
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maxfiles = 0;
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for(i=0; i < NUM_HISTORY_ENTRIES; i++)
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{
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if(history.entries[i].filepath[0] > 0)
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{
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filelist[i].offset = 0;
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filelist[i].length = 0;
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filelist[i].flags = 0;
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filelist[i].filename_offset = 0;
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strncpy(filelist[i].filename, history.entries[i].filename, MAXJOLIET-1);
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filelist[i].filename[MAXJOLIET-1] = '\0';
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maxfiles++;
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}
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else
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{
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/* Found the end of the list. */
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break;
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}
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}
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if(!maxfiles)
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{
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WaitPrompt ("No recent files");
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return;
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}
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FileSelector();
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}
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/****************************************************************************
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* LoadFile
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*
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* This function will load a file from DVD or SDCARD, in BIN, SMD or ZIP format.
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* The values for offset and length are inherited from rootdir and
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* rootdirlength.
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*
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* The buffer parameter should re-use the initial ROM buffer.
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****************************************************************************/
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static int LoadFile (unsigned char *buffer)
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{
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int readoffset;
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int blocks;
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int i;
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u64 discoffset = 0;
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char readbuffer[2048];
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char fname[MAXPATHLEN];
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/* SDCard access */
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if (UseSDCARD)
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{
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/* open file */
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sprintf(fname, "%s%s",rootSDdir,filelist[selection].filename);
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sdfile = fopen(fname, "rb");
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if (sdfile == NULL)
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{
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WaitPrompt ("Unable to open file!");
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haveSDdir = 0;
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return 0;
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}
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}
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/* How many 2k blocks to read */
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if (rootdirlength == 0) return 0;
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blocks = rootdirlength / 2048;
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readoffset = 0;
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ShowAction ("Loading ... Wait");
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/* Read first data chunk */
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if (UseSDCARD)
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{
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fread(readbuffer, 1, 2048, sdfile);
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}
|
|
else
|
|
{
|
|
discoffset = rootdir;
|
|
dvd_read (&readbuffer, 2048, discoffset);
|
|
}
|
|
|
|
/* determine file type */
|
|
if (!IsZipFile ((char *) readbuffer))
|
|
{
|
|
/* go back to file start */
|
|
if (UseSDCARD)
|
|
{
|
|
fseek(sdfile, 0, SEEK_SET);
|
|
}
|
|
|
|
/* read data chunks */
|
|
for (i = 0; i < blocks; i++)
|
|
{
|
|
if (UseSDCARD)
|
|
{
|
|
fread(readbuffer, 1, 2048, sdfile);
|
|
}
|
|
else
|
|
{
|
|
dvd_read(readbuffer, 2048, discoffset);
|
|
discoffset += 2048;
|
|
}
|
|
|
|
memcpy (buffer + readoffset, readbuffer, 2048);
|
|
readoffset += 2048;
|
|
}
|
|
|
|
/* final read */
|
|
i = rootdirlength % 2048;
|
|
if (i)
|
|
{
|
|
if (UseSDCARD) fread(readbuffer, 1, i, sdfile);
|
|
else dvd_read (readbuffer, 2048, discoffset);
|
|
memcpy (buffer + readoffset, readbuffer, i);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* unzip file */
|
|
return UnZipBuffer (buffer, discoffset, rootdirlength, UseSDCARD);
|
|
}
|
|
|
|
/* close SD file */
|
|
if (UseSDCARD) fclose(sdfile);
|
|
|
|
return rootdirlength;
|
|
}
|