mirror of https://github.com/PCSX2/pcsx2.git
915 lines
15 KiB
C
915 lines
15 KiB
C
/* isocompress.c
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* Copyright (C) 2002-2005 PCSX2 Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* PCSX2 members can be contacted through their website at www.pcsx2.net.
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*/
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#include <stddef.h> // NULL
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// #ifndef __LINUX__
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// #ifdef __linux__
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// #define __LINUX__
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// #endif /* __linux__ */
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// #endif /* No __LINUX__ */
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// #define CDVDdefs
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// #include "PS2Edefs.h"
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#include "logfile.h"
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#include "isofile.h"
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#include "actualfile.h"
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#include "gzipv1.h"
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#include "blockv2.h"
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#include "gzipv2.h"
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#include "bzip2v2.h"
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#include "bzip2v3.h"
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#include "isocompress.h"
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const char *compressnames[] = {
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"No Compression",
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".Z (zlib) for speed",
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".BZ2 (bzip2) for speed",
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".bz2 (bzip2) for size",
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NULL }; // Compress types 0, 3, 4, and 5
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const char *compressdesc[] = {
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"",
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" zlib orig",
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" block.dump",
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" zlib speed",
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" bzip2 speed",
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" bzip2 size",
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NULL };
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const char *compressid[] = {
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"BVD2",
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"Z V2",
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"BZV2",
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"BZV3",
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NULL }; // Starts at compress type 2
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struct CompressExt compressext[] = {
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{ ".z", 1 },
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{ ".Z", 1 },
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{ ".bz2", 5 },
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{ ".BZ2", 3 },
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{ ".bZ2", 3 },
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{ ".Bz2", 3 },
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{ ".bz", 3 },
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{ ".BZ", 3 },
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{ ".bZ", 3 },
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{ ".Bz", 3 },
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{ ".dump", 2 },
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{ NULL, 0 }
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};
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int IsoNameStripCompress(struct IsoFile *isofile) {
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int tempext;
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int tempnamepos;
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int tempextpos;
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int retmethod;
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retmethod = 0;
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tempext = 0;
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while(compressext[tempext].name != NULL) {
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tempextpos = 0;
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while(*(compressext[tempext].name + tempextpos) != 0) tempextpos++;
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tempnamepos = isofile->namepos;
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while((tempnamepos > 0) && (tempextpos > 0) &&
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(isofile->name[tempnamepos - 1] == *(compressext[tempext].name + tempextpos - 1))) {
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tempnamepos--;
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tempextpos--;
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} // ENDWHILE- Comparing one extension to the end of the file name
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if(tempextpos == 0) {
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isofile->namepos = tempnamepos; // Move name pointer in front of ext.
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return(compressext[tempext].method); // Found a match... say which one.
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} else {
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tempext++; // Next ext in the list to test...
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} // ENDIF- Did we find a match?
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} // ENDWHILE- looking through extension list
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return(0); // No compress extension found.
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} // END IsoNameStripCompress()
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int CompressOpenForRead(struct IsoFile *isofile) {
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int retval;
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#ifdef VERBOSE_FUNCTION_ISOCOMPRESS
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PrintLog("CDVDiso compress: OpenForRead()");
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#endif /* VERBOSE_FUNCTION_ISOCOMPRESS */
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switch(isofile->compress) {
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case 1:
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retval = GZipV1OpenForRead(isofile);
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if(retval >= 0) retval = GZipV1OpenTableForRead(isofile);
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break;
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case 2:
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retval = BlockV2OpenForRead(isofile);
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if(retval >= 0) retval = BlockV2OpenTableForRead(isofile);
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break;
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case 3:
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retval = GZipV2OpenForRead(isofile);
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if(retval >= 0) retval = GZipV2OpenTableForRead(isofile);
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break;
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case 4:
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retval = BZip2V2OpenForRead(isofile);
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if(retval >= 0) retval = BZip2V2OpenTableForRead(isofile);
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break;
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case 5:
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retval = BZip2V3OpenForRead(isofile);
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if(retval >= 0) retval = BZip2V3OpenTableForRead(isofile);
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break;
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default:
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retval = -1;
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break;
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} // ENDSWITCH compress- which method do we try to get header info from?
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return(retval);
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} // END CompressOpenForRead()
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int CompressSeek(struct IsoFile *isofile, off64_t sector) {
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int retval;
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#ifdef VERBOSE_FUNCTION_ISOCOMPRESS
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PrintLog("CDVDiso compress: Seek(%lli)", sector);
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#endif /* VERBOSE_FUNCTION_ISOCOMPRESS */
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switch(isofile->compress) {
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case 1:
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retval = GZipV1SeekTable(isofile, sector);
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break;
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case 2:
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retval = BlockV2SeekTable(isofile, sector);
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break;
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case 3:
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retval = GZipV2SeekTable(isofile, sector);
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break;
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case 4:
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retval = BZip2V2SeekTable(isofile, sector);
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break;
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case 5:
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retval = BZip2V3SeekTable(isofile, sector);
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break;
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default:
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retval = -1;
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break;
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} // ENDSWITCH compress- which method do we try to get header info from?
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return(retval);
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} // END CompressSeek()
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int CompressRead(struct IsoFile *isofile, char *buffer) {
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struct TableData table;
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int retval;
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int compptr;
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int i;
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#ifdef VERBOSE_FUNCTION_ISOCOMPRESS
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PrintLog("CDVDiso compress: Read()");
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#endif /* VERBOSE_FUNCTION_ISOCOMPRESS */
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switch(isofile->compress) {
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case 1:
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retval = GZipV1ReadTable(isofile, &table);
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if(retval >= 0) {
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if(table.offset != isofile->filebytepos) {
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retval = GZipV1Seek(isofile, table.offset);
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} // ENDIF- The data file not in position?
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} // ENDIF- Did we get a table entry?
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if(retval >= 0) {
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retval = GZipV1Read(isofile, table.size, buffer);
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} // ENDIF- Are we still on track?
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break;
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case 2:
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retval = BlockV2ReadTable(isofile, &table);
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if(retval >= 0) {
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if(table.offset != isofile->filebytepos) {
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retval = BlockV2Seek(isofile, table.offset);
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} // ENDIF- The data file not in position?
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} // ENDIF- Did we get a table entry?
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if(retval >= 0) {
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retval = BlockV2Read(isofile, table.size, buffer);
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} // ENDIF- Are we still on track?
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break;
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case 3:
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retval = GZipV2ReadTable(isofile, &table);
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if(retval >= 0) {
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if(table.offset != isofile->filebytepos) {
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retval = GZipV2Seek(isofile, table.offset);
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} // ENDIF- The data file not in position?
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} // ENDIF- Did we get a table entry?
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if(retval >= 0) {
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retval = GZipV2Read(isofile, table.size, buffer);
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} // ENDIF- Are we still on track?
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break;
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case 4:
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retval = 0;
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if((isofile->filesectorpos < isofile->compsector) ||
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(isofile->filesectorpos > isofile->compsector + isofile->numsectors - 1)) {
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retval = BZip2V2ReadTable(isofile, &table);
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if(retval >= 0) {
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if(table.offset != isofile->filebytepos) {
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retval = BZip2V2Seek(isofile, table.offset);
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} // ENDIF- The data file not in position?
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} // ENDIF- Did we get a table entry?
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if(retval >= 0) {
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retval = BZip2V2Read(isofile, table.size, isofile->compblock);
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isofile->compsector = isofile->filesectorpos / isofile->numsectors;
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isofile->compsector *= isofile->numsectors;
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} // ENDIF- Are we still on track?
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} // ENDIF- Did we have to read in another block?
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if(retval >= 0) {
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compptr = isofile->filesectorpos - isofile->compsector;
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compptr *= isofile->blocksize;
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if((compptr < 0) || (compptr > (65535 - isofile->blocksize))) {
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retval = -1;
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} else {
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for(i = 0; i < isofile->blocksize; i++)
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*(buffer + i) = isofile->compblock[compptr + i];
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isofile->filesectorpos++;
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} // ENDIF- Not a good buffer pointer? Say so.
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} // ENDIF- Do we have a valid buffer to draw from?
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break;
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case 5:
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retval = 0;
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if((isofile->filesectorpos < isofile->compsector) ||
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(isofile->filesectorpos > isofile->compsector + isofile->numsectors - 1)) {
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if(isofile->filesectorpos != isofile->compsector + isofile->numsectors) {
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retval = BZip2V3ReadTable(isofile, &table);
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if(retval >= 0) {
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if(table.offset != isofile->filebytepos) {
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retval = BZip2V3Seek(isofile, table.offset);
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} // ENDIF- The data file not in position?
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} // ENDIF- Did we get a table entry?
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} // ENDIF- Not the next block in the batch? Seek then.
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if(retval >= 0) {
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retval = BZip2V3Read(isofile, 0, isofile->compblock);
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isofile->compsector = isofile->filesectorpos / isofile->numsectors;
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isofile->compsector *= isofile->numsectors;
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} // ENDIF- Are we still on track?
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} // ENDIF- Did we have to read in another block?
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if(retval >= 0) {
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compptr = isofile->filesectorpos - isofile->compsector;
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compptr *= isofile->blocksize;
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if((compptr < 0) || (compptr > (65535 - isofile->blocksize))) {
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retval = -1;
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} else {
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for(i = 0; i < isofile->blocksize; i++)
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*(buffer + i) = isofile->compblock[compptr + i];
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isofile->filesectorpos++;
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} // ENDIF- Not a good buffer pointer? Say so.
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} // ENDIF- Do we have a valid buffer to draw from?
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break;
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default:
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retval = -1;
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break;
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} // ENDSWITCH compress- which method do we try to get header info from?
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if(retval >= 0) retval = isofile->blocksize;
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return(retval);
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} // END CompressRead()
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void CompressClose(struct IsoFile *isofile) {
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int retval;
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#ifdef VERBOSE_FUNCTION_ISOCOMPRESS
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PrintLog("CDVDiso compress: Close()");
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#endif /* VERBOSE_FUNCTION_ISOCOMPRESS */
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switch(isofile->compress) {
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case 1:
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GZipV1Close(isofile);
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break;
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case 2:
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BlockV2Close(isofile);
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break;
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case 3:
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GZipV2Close(isofile);
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break;
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case 4:
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BZip2V2Close(isofile);
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break;
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case 5:
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BZip2V3Close(isofile);
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break;
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default:
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retval = -1;
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break;
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} // ENDSWITCH compress- which method do we try to get header info from?
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return;
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} // END CompressClose()
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int CompressOpenForWrite(struct IsoFile *isofile) {
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int retval;
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#ifdef VERBOSE_FUNCTION_ISOCOMPRESS
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PrintLog("CDVDiso compress: OpenForWrite()");
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#endif /* VERBOSE_FUNCTION_ISOCOMPRESS */
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switch(isofile->compress) {
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case 1:
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retval = GZipV1OpenForWrite(isofile);
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if(retval >= 0) retval = GZipV1OpenTableForWrite(isofile);
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break;
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case 2:
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retval = -1;
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break;
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case 3:
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retval = GZipV2OpenForWrite(isofile);
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if(retval >= 0) retval = GZipV2OpenTableForWrite(isofile);
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break;
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case 4:
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retval = BZip2V2OpenForWrite(isofile);
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if(retval >= 0) retval = BZip2V2OpenTableForWrite(isofile);
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break;
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case 5:
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retval = BZip2V3OpenForWrite(isofile);
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if(retval >= 0) retval = BZip2V3OpenTableForWrite(isofile);
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break;
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default:
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retval = -1;
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break;
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|
} // ENDSWITCH compress- which method do we try to get header info from?
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|
|
|
|
|
|
|
return(retval);
|
|
|
|
} // END CompressOpenForWrite()
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|
|
|
|
|
|
|
int CompressWrite(struct IsoFile *isofile, char *buffer) {
|
|
|
|
struct TableData table;
|
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|
|
int compptr;
|
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|
|
int retval;
|
|
|
|
int i;
|
|
|
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|
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|
|
#ifdef VERBOSE_FUNCTION_ISOCOMPRESS
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|
PrintLog("CDVDiso compress: Write()");
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|
|
#endif /* VERBOSE_FUNCTION_ISOCOMPRESS */
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|
|
|
|
|
|
|
switch(isofile->compress) {
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|
|
|
case 1:
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|
|
|
retval = GZipV1Write(isofile, buffer);
|
|
|
|
if(retval > 0) {
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|
|
|
table.offset = isofile->filebytepos - retval;
|
|
|
|
table.size = retval;
|
|
|
|
retval = GZipV1WriteTable(isofile, table);
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|
|
} // ENDIF- Wrote the data out? Update the table as well.
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2:
|
|
|
|
retval = -1;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 3:
|
|
|
|
retval = GZipV2Write(isofile, buffer);
|
|
|
|
if(retval > 0) {
|
|
|
|
table.offset = isofile->filebytepos - retval;
|
|
|
|
table.size = retval;
|
|
|
|
retval = GZipV2WriteTable(isofile, table);
|
|
|
|
} // ENDIF- Wrote the data out? Update the table as well.
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 4:
|
|
|
|
retval = 0;
|
|
|
|
if((isofile->filesectorpos < isofile->compsector) ||
|
|
|
|
(isofile->filesectorpos > isofile->compsector + isofile->numsectors - 1)) {
|
|
|
|
retval = BZip2V2Write(isofile, isofile->compblock);
|
|
|
|
isofile->compsector += isofile->numsectors;
|
|
|
|
if(retval > 0) {
|
|
|
|
table.offset = isofile->filebytepos - retval;
|
|
|
|
table.size = retval;
|
|
|
|
retval = BZip2V2WriteTable(isofile, table);
|
|
|
|
} // ENDIF- Wrote the data out? Update the table as well.
|
|
|
|
} // ENDIF- Do we have a full buffer to write out?
|
|
|
|
|
|
|
|
if(retval >= 0) {
|
|
|
|
compptr = isofile->filesectorpos - isofile->compsector;
|
|
|
|
compptr *= isofile->blocksize;
|
|
|
|
for(i = 0; i < isofile->blocksize; i++)
|
|
|
|
isofile->compblock[compptr + i] = *(buffer + i);
|
|
|
|
} // ENDIF- Do we have a valid buffer to draw from?
|
|
|
|
isofile->filesectorpos++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 5:
|
|
|
|
retval = 0;
|
|
|
|
if((isofile->filesectorpos < isofile->compsector) ||
|
|
|
|
(isofile->filesectorpos > isofile->compsector + isofile->numsectors - 1)) {
|
|
|
|
retval = BZip2V3Write(isofile, isofile->compblock);
|
|
|
|
isofile->compsector += isofile->numsectors;
|
|
|
|
if(retval > 0) {
|
|
|
|
table.offset = isofile->filebytepos - retval;
|
|
|
|
table.size = retval;
|
|
|
|
retval = BZip2V3WriteTable(isofile, table);
|
|
|
|
} // ENDIF- Wrote the data out? Update the table as well.
|
|
|
|
} // ENDIF- Do we have a full buffer to write out?
|
|
|
|
|
|
|
|
if(retval >= 0) {
|
|
|
|
compptr = isofile->filesectorpos - isofile->compsector;
|
|
|
|
compptr *= isofile->blocksize;
|
|
|
|
for(i = 0; i < isofile->blocksize; i++)
|
|
|
|
isofile->compblock[compptr + i] = *(buffer + i);
|
|
|
|
} // ENDIF- Do we have a valid buffer to draw from?
|
|
|
|
isofile->filesectorpos++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
retval = -1;
|
|
|
|
break;
|
|
|
|
} // ENDSWITCH compress- which method do we try to get header info from?
|
|
|
|
|
|
|
|
if(retval >= 0) retval = isofile->blocksize;
|
|
|
|
return(retval);
|
|
|
|
} // END CompressWrite()
|
|
|