mirror of
https://github.com/dborth/snes9xgx.git
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393 lines
9.0 KiB
C++
393 lines
9.0 KiB
C++
/****************************************************************************
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* Snes9x 1.51 Nintendo Wii/Gamecube Port
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*
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* softdev July 2006
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* crunchy2 May-June 2007
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* Tantric 2008-2009
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*
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* memcardop.cpp
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*
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* Memory Card routines
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***************************************************************************/
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#include <gccore.h>
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#include <ogcsys.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "snes9xGX.h"
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#include "video.h"
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#include "menu.h"
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#include "preferences.h"
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#include "filebrowser.h"
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#include "fileop.h"
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#include "dvd.h"
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#include "images/saveicon.h"
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static u8 * SysArea = NULL;
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static char savecomments[2][32];
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/****************************************************************************
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* MountMC
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*
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* Mounts the memory card in the given slot.
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* Returns the result of the last attempted CARD_Mount command.
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***************************************************************************/
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static int MountMC(int slot, bool silent)
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{
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int ret = -1;
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int tries = 0;
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// Initialize Card System
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SysArea = (u8 *)memalign(32, CARD_WORKAREA);
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memset (SysArea, 0, CARD_WORKAREA);
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CARD_Init ("SNES", "00");
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// Mount the card
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while(tries < 10 && ret != 0)
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{
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EXI_ProbeReset();
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ret = CARD_Mount (slot, SysArea, NULL);
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VIDEO_WaitVSync();
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tries++;
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}
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if(ret != 0 && !silent)
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{
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if (slot == CARD_SLOTA)
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ErrorPrompt("Unable to mount Slot A Memory Card!");
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else
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ErrorPrompt("Unable to mount Slot B Memory Card!");
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}
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return ret;
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}
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/****************************************************************************
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* TestMC
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*
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* Checks to see if a card is in the card slot specified
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***************************************************************************/
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bool TestMC(int slot, bool silent)
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{
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// Memory Cards do not work in Wii mode - disable
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#ifdef HW_RVL
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return false;
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#endif
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bool ret = false;
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// Try to mount the card
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if (MountMC(slot, silent) == 0)
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{
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// Mount successful!
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CARD_Unmount (slot);
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ret = true;
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}
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free(SysArea);
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return ret;
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}
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/****************************************************************************
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* ParseMCDirectory
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*
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* Parses a list of all files on the specified memory card
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***************************************************************************/
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int
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ParseMCDirectory (int slot)
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{
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card_dir CardDir;
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int CardError;
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int entryNum = 0;
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char tmpname[MAXPATHLEN];
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// Try to mount the card
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CardError = MountMC(slot, NOTSILENT);
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if (CardError == 0)
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{
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CardError = CARD_FindFirst (slot, &CardDir, TRUE);
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while (CardError != CARD_ERROR_NOFILE)
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{
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BROWSERENTRY * newBrowserList = (BROWSERENTRY *)realloc(browserList, (entryNum+1) * sizeof(BROWSERENTRY));
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if(!newBrowserList) // failed to allocate required memory
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{
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ResetBrowser();
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ErrorPrompt("Out of memory: too many files!");
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entryNum = -1;
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break;
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}
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else
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{
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browserList = newBrowserList;
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}
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memset(&(browserList[entryNum]), 0, sizeof(BROWSERENTRY)); // clear the new entry
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strncpy(browserList[entryNum].filename, (char *)CardDir.filename, MAXJOLIET);
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StripExt(tmpname, (char *)CardDir.filename); // hide file extension
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strncpy(browserList[entryNum].displayname, tmpname, MAXDISPLAY); // crop name for display
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browserList[entryNum].length = CardDir.filelen;
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entryNum++;
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CardError = CARD_FindNext (&CardDir);
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}
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CARD_Unmount(slot);
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}
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// Sort the file list
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qsort(browserList, entryNum, sizeof(BROWSERENTRY), FileSortCallback);
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CancelAction();
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browser.numEntries = entryNum;
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return entryNum;
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}
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/****************************************************************************
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* Verify Memory Card file against buffer
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***************************************************************************/
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static int
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VerifyMCFile (char *buf, int slot, char *filename, int datasize)
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{
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card_file CardFile;
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unsigned char verifybuffer[65536] ATTRIBUTE_ALIGN (32);
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int CardError;
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unsigned int blocks;
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unsigned int SectorSize;
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int bytesleft = 0;
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int bytesread = 0;
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memset (verifybuffer, 0, 65536);
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// Get Sector Size
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CARD_GetSectorSize (slot, &SectorSize);
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memset (&CardFile, 0, sizeof (CardFile));
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CardError = CARD_Open (slot, filename, &CardFile);
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if(CardError)
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{
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ErrorPrompt("Unable to open file!");
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}
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else
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{
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blocks = CardFile.len;
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if (blocks < SectorSize)
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blocks = SectorSize;
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if (blocks % SectorSize)
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blocks += SectorSize;
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if (blocks > (unsigned int)datasize)
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blocks = datasize;
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bytesleft = blocks;
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bytesread = 0;
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while (bytesleft > 0)
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{
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CardError = CARD_Read (&CardFile, verifybuffer, SectorSize, bytesread);
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if (CardError || memcmp (buf + bytesread, verifybuffer, (unsigned int)bytesleft < SectorSize ? bytesleft : SectorSize) )
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{
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bytesread = 0;
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ErrorPrompt("File integrity could not be verified!");
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break;
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}
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bytesleft -= SectorSize;
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bytesread += SectorSize;
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ShowProgress ("Verifying...", bytesread, blocks);
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}
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CARD_Close (&CardFile);
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CancelAction();
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}
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return bytesread;
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}
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/****************************************************************************
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* LoadMCFile
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* Load savebuffer from Memory Card file
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***************************************************************************/
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int
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LoadMCFile (char *buf, int slot, char *filename, bool silent)
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{
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card_file CardFile;
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int CardError;
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unsigned int blocks;
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unsigned int SectorSize;
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int bytesleft = 0;
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int bytesread = 0;
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// Try to mount the card
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CardError = MountMC(slot, NOTSILENT);
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if (CardError == 0)
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{
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// Get Sector Size
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CARD_GetSectorSize (slot, &SectorSize);
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memset (&CardFile, 0, sizeof (CardFile));
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CardError = CARD_Open (slot, filename, &CardFile);
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if(CardError)
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{
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if(!silent)
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ErrorPrompt("Unable to open file!");
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}
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else
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{
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blocks = CardFile.len;
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if (blocks < SectorSize)
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blocks = SectorSize;
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if (blocks % SectorSize)
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blocks += SectorSize;
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bytesleft = blocks;
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bytesread = 0;
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while (bytesleft > 0)
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{
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CardError = CARD_Read (&CardFile, buf + bytesread, SectorSize, bytesread);
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if(CardError)
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{
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ErrorPrompt("Error loading file!");
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bytesread = 0;
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break;
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}
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bytesleft -= SectorSize;
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bytesread += SectorSize;
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ShowProgress ("Loading...", bytesread, blocks);
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}
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CARD_Close (&CardFile);
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CancelAction();
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}
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CARD_Unmount(slot);
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}
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// discard save icon and comments
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memmove(buf, buf+sizeof(saveicon)+64, bytesread);
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bytesread -= (sizeof(saveicon)+64);
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free(SysArea);
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return bytesread;
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}
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/****************************************************************************
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* SaveMCFile
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* Write savebuffer to Memory Card file
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***************************************************************************/
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int
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SaveMCFile (char *buf, int slot, char *filename, int datasize, bool silent)
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{
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card_file CardFile;
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card_stat CardStatus;
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int CardError;
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unsigned int blocks;
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unsigned int SectorSize;
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int byteswritten = 0;
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int bytesleft = 0;
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if(datasize <= 0)
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return 0;
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// add save icon and comments
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memmove(buf+sizeof(saveicon)+64, buf, datasize);
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memcpy(buf, saveicon, sizeof(saveicon));
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memcpy(buf+sizeof(saveicon), savecomments, 64);
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datasize += (sizeof(saveicon)+64);
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// Try to mount the card
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CardError = MountMC(slot, NOTSILENT);
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if (CardError == 0)
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{
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// Get Sector Size
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CARD_GetSectorSize (slot, &SectorSize);
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// Calculate number of blocks required
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blocks = (datasize / SectorSize) * SectorSize;
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if (datasize % SectorSize)
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blocks += SectorSize;
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// Delete existing file (if present)
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memset(&CardStatus, 0, sizeof(card_stat));
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CardError = CARD_Open (slot, filename, &CardFile);
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if(CardError == 0)
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{
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CARD_Close (&CardFile);
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CardError = CARD_Delete(slot, filename);
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if (CardError)
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{
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ErrorPrompt("Unable to delete existing file!");
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goto done;
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}
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}
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// Create new file
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memset(&CardStatus, 0, sizeof(card_stat));
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CardError = CARD_Create (slot, filename, blocks, &CardFile);
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if (CardError)
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{
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if (CardError == CARD_ERROR_INSSPACE)
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ErrorPrompt("Insufficient space to create file!");
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else
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ErrorPrompt("Unable to create card file!");
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goto done;
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}
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// Now, have an open file handle, ready to send out the data
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CARD_GetStatus (slot, CardFile.filenum, &CardStatus);
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CardStatus.icon_addr = 0x0;
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CardStatus.icon_fmt = 2;
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CardStatus.icon_speed = 1;
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CardStatus.comment_addr = 2048;
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CARD_SetStatus (slot, CardFile.filenum, &CardStatus);
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bytesleft = blocks;
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while (bytesleft > 0)
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{
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CardError =
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CARD_Write (&CardFile, buf + byteswritten, SectorSize, byteswritten);
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if(CardError)
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{
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ErrorPrompt("Error writing file!");
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byteswritten = 0;
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break;
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}
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bytesleft -= SectorSize;
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byteswritten += SectorSize;
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ShowProgress ("Saving...", byteswritten, blocks);
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}
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CARD_Close (&CardFile);
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CancelAction();
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if (byteswritten > 0 && GCSettings.VerifySaves)
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{
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// Verify the written file
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if (!VerifyMCFile (buf, slot, filename, byteswritten) )
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byteswritten = 0;
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}
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done:
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CARD_Unmount (slot);
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}
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free(SysArea);
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return byteswritten;
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}
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void SetMCSaveComments(char comments[2][32])
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{
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memcpy(savecomments, comments, 64);
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}
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