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/* ScummVM Tools
*
* ScummVM Tools is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common/scummsys.h"
#include "common/util.h"
#define RAW_SECTOR_SIZE 2352
#define MIN(x, y) ((x) < (y) ? (x) : (y));
typedef unsigned char Uint8;
typedef unsigned short Uint16;
typedef unsigned int Uint32;
#include "common/pack-start.h"
typedef struct {
Uint16 file;
Uint16 channel;
Uint16 submode;
Uint16 datatype;
} sub_header;
typedef struct {
Uint8 sync[12]; // synch string at beginning of sector "0x00 FF FF FF FF FF FF FF FF FF FF 00"
Uint8 header[4]; // header with info on current mode... we'll be always at mode 2 with this file
sub_header subheader; // sub header with info on current submode (for mixed sectors)
Uint8 data[2048];
Uint8 edc[4];
Uint8 ecc[276];
} sect_xa_f1;
typedef struct {
Uint8 sync[12]; // synch string at beginning of sector "0x00 FF FF FF FF FF FF FF FF FF FF 00"
Uint8 header[4]; // header with info on current mode... we'll be always at mode 2 with this file
sub_header subheader; // sub header with info on current submode (for mixed sectors)
Uint8 data[2324];
Uint8 edc[4];
} sect_xa_f2;
typedef struct {
char filename[16];
Uint32 offset; // In RAW (2352b) sectors
Uint32 size; // In bytes.
Uint8 unk[8]; // always 0?
} rtf_entry;
#include "common/pack-end.h"
void fix_entry_endianess(rtf_entry *entry) {
#ifdef SCUMM_LITTLE_ENDIAN
Uint32 data;
data = entry->offset;
data = ((data >> 24) & 0x000000FF) |
((data >> 8) & 0x0000FF00) |
((data << 8) & 0x00FF0000) |
((data << 24) & 0xFF000000);
entry->offset = data;
data = entry->size;
data = ((data >> 24) & 0x000000FF) |
((data >> 8) & 0x0000FF00) |
((data << 8) & 0x00FF0000) |
((data << 24) & 0xFF000000);
entry->size = data;
#else
; // Do nothing...
#endif
}
int isSectorMode2(sect_xa_f1 *sect) {
#ifdef SCUMM_LITTLE_ENDIAN
return (sect->subheader.datatype) & 0x0060 ? 1 : 0;
#else
return (sect->subheader.datatype) & 0x6000 ? 1 : 0;
#endif
}
int main(int argc, char** argv) {
FILE *src_raw;
FILE *dst_file;
char *fname;
bool listOnly = false;
byte index[4096];
sect_xa_f1 sector;
sect_xa_f2 *sector_f2;
if (argc < 2) {
fprintf(stdout, "Usage: %s [-list] <real-time-file>\n", argv[0]);
return -1;
}
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-list")) {
listOnly = true;
} else {
fname = argv[i];
}
}
src_raw = fopen(fname, "rb");
if (src_raw == NULL) {
perror(argv[1]);
return -1;
}
// Read the index!
fread(§or, sizeof(sect_xa_f1), 1, src_raw);
memcpy((index + 0), &(sector.data), 2048);
hexdump(index, 2048);
fread(§or, sizeof(sect_xa_f1), 1, src_raw);
memcpy((index + 2048), &(sector.data), 2048);
// Read entries
int entryNum = 0;
while (1) {
rtf_entry* idx_entry = (rtf_entry*)(index + (entryNum * sizeof(rtf_entry)));
entryNum++;
if (idx_entry->filename[0] == 0) break;
fix_entry_endianess(idx_entry);
if (strcmp(idx_entry->filename, "DIRINFO") == 0) continue; // We are not interested in this
fprintf(stdout, "Entry: %s\n", idx_entry->filename);
fprintf(stdout, "Begins at: %u RAW blocks (0x%x).\n", idx_entry->offset, idx_entry->offset * RAW_SECTOR_SIZE);
fprintf(stdout, "Size: ~%uKb (%u bytes)\n\n", (idx_entry->size / 1024) + (idx_entry->size % 1024 ? 1 : 0), idx_entry->size);
if (listOnly)
continue;
Uint32 remaining_size = idx_entry->size;
dst_file = fopen(idx_entry->filename, "wb");
if (dst_file == NULL) {
perror(idx_entry->filename);
return -1;
}
// Get to the interesting sector.
fseek(src_raw, idx_entry->offset * RAW_SECTOR_SIZE, SEEK_SET);
while (remaining_size) {
fread(§or, sizeof(sect_xa_f1), 1, src_raw);
if (isSectorMode2(§or)) { // Mode 2 (2324b)
Uint32 toRead = MIN(2324, remaining_size);
sector_f2 = (sect_xa_f2*)§or;
fwrite(&(sector_f2->data), toRead, 1, dst_file);
remaining_size -= toRead;
} else { // Mode 1 (2048b)
Uint32 toRead = MIN(2048, remaining_size);
fwrite(&(sector.data), toRead, 1, dst_file);
remaining_size -= toRead;
}
}
fclose(dst_file);
}
fclose(src_raw);
return 0;
}
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