pcsx2/plugins/CDVDiso/src/libiso.cpp

1054 lines
22 KiB
C++

#define __USE_LARGEFILE64
#define __USE_FILE_OFFSET64
#define _FILE_OFFSET_BITS 64
#ifdef __GNUC__
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE
# endif
# ifndef _LARGEFILE64_SOURCE
# define _LARGEFILE64_SOURCE
# endif
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "zlib.h"
#include "bzlib.h"
#include "CDVDiso.h"
#include "libiso.h"
/* some structs from libcdvd by Hiryu & Sjeep (C) 2002 */
#if defined(_WIN32)
#pragma pack(1)
#endif
struct rootDirTocHeader
{
u16 length; //+00
u32 tocLBA; //+02
u32 tocLBA_bigend; //+06
u32 tocSize; //+0A
u32 tocSize_bigend; //+0E
u8 dateStamp[8]; //+12
u8 reserved[6]; //+1A
u8 reserved2; //+20
u8 reserved3; //+21
#if defined(_WIN32)
}; //+22
#else
} __attribute__((packed));
#endif
struct asciiDate
{
char year[4];
char month[2];
char day[2];
char hours[2];
char minutes[2];
char seconds[2];
char hundreths[2];
char terminator[1];
#if defined(_WIN32)
};
#else
} __attribute__((packed));
#endif
struct cdVolDesc
{
u8 filesystemType; // 0x01 = ISO9660, 0x02 = Joliet, 0xFF = NULL
u8 volID[5]; // "CD001"
u8 reserved2;
u8 reserved3;
u8 sysIdName[32];
u8 volName[32]; // The ISO9660 Volume Name
u8 reserved5[8];
u32 volSize; // Volume Size
u32 volSizeBig; // Volume Size Big-Endian
u8 reserved6[32];
u32 unknown1;
u32 unknown1_bigend;
u16 volDescSize; //+80
u16 volDescSize_bigend; //+82
u32 unknown3; //+84
u32 unknown3_bigend; //+88
u32 priDirTableLBA; // LBA of Primary Dir Table //+8C
u32 reserved7; //+90
u32 secDirTableLBA; // LBA of Secondary Dir Table //+94
u32 reserved8; //+98
struct rootDirTocHeader rootToc;
u8 volSetName[128];
u8 publisherName[128];
u8 preparerName[128];
u8 applicationName[128];
u8 copyrightFileName[37];
u8 abstractFileName[37];
u8 bibliographyFileName[37];
struct asciiDate creationDate;
struct asciiDate modificationDate;
struct asciiDate effectiveDate;
struct asciiDate expirationDate;
u8 reserved10;
u8 reserved11[1166];
#if defined(_WIN32)
};
#else
} __attribute__((packed));
#endif
#ifdef _WIN32
void *_openfile(const char *filename, int flags)
{
HANDLE handle;
// printf("_openfile %s, %d\n", filename, flags & O_RDONLY);
if (flags & O_WRONLY)
{
int _flags = CREATE_NEW;
if (flags & O_CREAT) _flags = CREATE_ALWAYS;
handle = CreateFile(filename, GENERIC_WRITE, 0, NULL, _flags, 0, NULL);
}
else
{
handle = CreateFile(filename, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
}
return handle == INVALID_HANDLE_VALUE ? NULL : handle;
}
u64 _tellfile(void *handle)
{
u64 ofs;
PLONG _ofs = (LONG*) & ofs;
_ofs[1] = 0;
_ofs[0] = SetFilePointer(handle, 0, &_ofs[1], FILE_CURRENT);
return ofs;
}
int _seekfile(void *handle, u64 offset, int whence)
{
u64 ofs = (u64)offset;
PLONG _ofs = (LONG*) & ofs;
// printf("_seekfile %p, %d_%d\n", handle, _ofs[1], _ofs[0]);
if (whence == SEEK_SET)
{
SetFilePointer(handle, _ofs[0], &_ofs[1], FILE_BEGIN);
}
else
{
SetFilePointer(handle, _ofs[0], &_ofs[1], FILE_END);
}
return 0;
}
int _readfile(void *handle, void *dst, int size)
{
DWORD ret;
// printf("_readfile %p %d\n", handle, size);
ReadFile(handle, dst, size, &ret, NULL);
// printf("_readfile ret %d; %d\n", ret, GetLastError());
return ret;
}
int _writefile(void *handle, const void *src, int size)
{
DWORD ret;
// printf("_writefile %p, %d\n", handle, size);
// _seekfile(handle, _tellfile(handle));
WriteFile(handle, src, size, &ret, NULL);
// printf("_writefile ret %d\n", ret);
return ret;
}
void _closefile(void *handle)
{
CloseHandle(handle);
}
#else
void *_openfile(const char *filename, int flags)
{
printf("_openfile %s %x\n", filename, flags);
if (flags & O_WRONLY)
return fopen64(filename, "wb");
else
return fopen64(filename, "rb");
}
#include <errno.h>
u64 _tellfile(void *handle)
{
FILE* fp = (FILE*)handle;
s64 cursize = ftell(fp);
if (cursize == -1)
{
// try 64bit
cursize = ftello64(fp);
if (cursize < -1)
{
// zero top 32 bits
cursize &= 0xffffffff;
}
}
return cursize;
}
int _seekfile(void *handle, u64 offset, int whence)
{
int seekerr = fseeko64((FILE*)handle, offset, whence);
if (seekerr == -1) printf("failed to seek\n");
return seekerr;
}
int _readfile(void *handle, void *dst, int size)
{
return fread(dst, 1, size, (FILE*)handle);
}
int _writefile(void *handle, const void *src, int size)
{
return fwrite(src, 1, size, (FILE*)handle);
}
void _closefile(void *handle)
{
fclose((FILE*)handle);
}
#endif
int detect(isoFile *iso)
{
u8 buf[2448];
struct cdVolDesc *volDesc;
if (isoReadBlock(iso, buf, 16) == -1) return -1;
volDesc = (struct cdVolDesc *)(buf + 24);
if (strncmp((char*)volDesc->volID, "CD001", 5)) return 0;
if (volDesc->rootToc.tocSize == 2048)
iso->type = ISOTYPE_CD;
else
iso->type = ISOTYPE_DVD;
return 1;
}
int _isoReadZtable(isoFile *iso)
{
void *handle;
char table[256];
int size;
sprintf(table, "%s.table", iso->filename);
handle = _openfile(table, O_RDONLY);
if (handle == NULL)
{
printf("Error loading %s\n", table);
return -1;
}
_seekfile(handle, 0, SEEK_END);
size = _tellfile(handle);
iso->Ztable = (char*)malloc(size);
if (iso->Ztable == NULL)
{
return -1;
}
_seekfile(handle, 0, SEEK_SET);
_readfile(handle, iso->Ztable, size);
_closefile(handle);
iso->blocks = size / 6;
return 0;
}
int _isoReadZ2table(isoFile *iso)
{
void *handle;
char table[256];
u32 *Ztable;
int ofs, size, i;
sprintf(table, "%s.table", iso->filename);
handle = _openfile(table, O_RDONLY);
if (handle == NULL)
{
printf("Error loading %s\n", table);
return -1;
}
_seekfile(handle, 0, SEEK_END);
size = _tellfile(handle);
Ztable = (u32*)malloc(size);
if (Ztable == NULL)
{
return -1;
}
_seekfile(handle, 0, SEEK_SET);
_readfile(handle, Ztable, size);
_closefile(handle);
iso->Ztable = (char*)malloc(iso->blocks * 8);
if (iso->Ztable == NULL)
{
return -1;
}
ofs = 16;
for (i = 0; i < iso->blocks; i++)
{
*(u32*)&iso->Ztable[i*8+0] = ofs;
*(u32*)&iso->Ztable[i*8+4] = Ztable[i];
ofs += Ztable[i];
}
free(Ztable);
return 0;
}
int _isoReadBZ2table(isoFile *iso)
{
void *handle;
char table[256];
u32 *Ztable;
int ofs;
int size;
int i;
sprintf(table, "%s.table", iso->filename);
handle = _openfile(table, O_RDONLY);
if (handle == NULL)
{
printf("Error loading %s\n", table);
return -1;
}
_seekfile(handle, 0, SEEK_END);
size = _tellfile(handle);
Ztable = (u32*)malloc(size);
if (Ztable == NULL) return -1;
_seekfile(handle, 0, SEEK_SET);
_readfile(handle, Ztable, size);
_closefile(handle);
iso->Ztable = (char*)malloc(iso->blocks * 8);
if (iso->Ztable == NULL) return -1;
ofs = 16;
for (i = 0; i < iso->blocks / 16; i++)
{
*(u32*)&iso->Ztable[i*8+0] = ofs;
*(u32*)&iso->Ztable[i*8+4] = Ztable[i];
ofs += Ztable[i];
}
if (iso->blocks & 0xf)
{
*(u32*)&iso->Ztable[i*8+0] = ofs;
*(u32*)&iso->Ztable[i*8+4] = Ztable[i];
ofs += Ztable[i];
}
free(Ztable);
return 0;
}
int _isoReadDtable(isoFile *iso)
{
int ret;
int i;
_seekfile(iso->handle, 0, SEEK_END);
iso->dtablesize = (_tellfile(iso->handle) - 16) / (iso->blocksize + 4);
iso->dtable = (u32*)malloc(iso->dtablesize * 4);
for (i = 0; i < iso->dtablesize; i++)
{
_seekfile(iso->handle, 16 + (iso->blocksize + 4)*i, SEEK_SET);
ret = _readfile(iso->handle, &iso->dtable[i], 4);
if (ret < 4) return -1;
}
return 0;
}
int isoDetect(isoFile *iso) // based on florin's CDVDbin detection code :)
{
char buf[32];
int len;
iso->type = ISOTYPE_ILLEGAL;
len = strlen(iso->filename);
if (len >= 2)
{
if (!strncmp(iso->filename + (len - 2), ".Z", 2))
{
iso->flags = ISOFLAGS_Z;
iso->blocksize = 2352;
_isoReadZtable(iso);
return detect(iso) == 1 ? 0 : -1;
}
}
_seekfile(iso->handle, 0, SEEK_SET);
_readfile(iso->handle, buf, 4);
if (strncmp(buf, "BDV2", 4) == 0)
{
iso->flags = ISOFLAGS_BLOCKDUMP;
_readfile(iso->handle, &iso->blocksize, 4);
_readfile(iso->handle, &iso->blocks, 4);
_readfile(iso->handle, &iso->blockofs, 4);
_isoReadDtable(iso);
return detect(iso) == 1 ? 0 : -1;
}
else if (strncmp(buf, "Z V2", 4) == 0)
{
iso->flags = ISOFLAGS_Z2;
_readfile(iso->handle, &iso->blocksize, 4);
_readfile(iso->handle, &iso->blocks, 4);
_readfile(iso->handle, &iso->blockofs, 4);
_isoReadZ2table(iso);
return detect(iso) == 1 ? 0 : -1;
}
else if (strncmp(buf, "BZV2", 4) == 0)
{
iso->flags = ISOFLAGS_BZ2;
_readfile(iso->handle, &iso->blocksize, 4);
_readfile(iso->handle, &iso->blocks, 4);
_readfile(iso->handle, &iso->blockofs, 4);
iso->buflsn = -1;
iso->buffer = (u8*)malloc(iso->blocksize * 16);
if (iso->buffer == NULL) return -1;
_isoReadBZ2table(iso);
return detect(iso) == 1 ? 0 : -1;
}
else
{
iso->blocks = 16;
}
// ISO 2048
iso->blocksize = 2048;
iso->offset = 0;
iso->blockofs = 24;
if (detect(iso) == 1) return 0;
// RAW 2336
iso->blocksize = 2336;
iso->offset = 0;
iso->blockofs = 16;
if (detect(iso) == 1) return 0;
// RAW 2352
iso->blocksize = 2352;
iso->offset = 0;
iso->blockofs = 0;
if (detect(iso) == 1) return 0;
// RAWQ 2448
iso->blocksize = 2448;
iso->offset = 0;
iso->blockofs = 0;
if (detect(iso) == 1) return 0;
// NERO ISO 2048
iso->blocksize = 2048;
iso->offset = 150 * 2048;
iso->blockofs = 24;
if (detect(iso) == 1) return 0;
// NERO RAW 2352
iso->blocksize = 2352;
iso->offset = 150 * 2048;
iso->blockofs = 0;
if (detect(iso) == 1) return 0;
// NERO RAWQ 2448
iso->blocksize = 2448;
iso->offset = 150 * 2048;
iso->blockofs = 0;
if (detect(iso) == 1) return 0;
// ISO 2048
iso->blocksize = 2048;
iso->offset = -8;
iso->blockofs = 24;
if (detect(iso) == 1) return 0;
// RAW 2352
iso->blocksize = 2352;
iso->offset = -8;
iso->blockofs = 0;
if (detect(iso) == 1) return 0;
// RAWQ 2448
iso->blocksize = 2448;
iso->offset = -8;
iso->blockofs = 0;
if (detect(iso) == 1) return 0;
iso->offset = 0;
iso->blocksize = 2352;
iso->type = ISOTYPE_AUDIO;
return 0;
return -1;
}
isoFile *isoOpen(const char *filename)
{
isoFile *iso;
int i;
iso = (isoFile*)malloc(sizeof(isoFile));
if (iso == NULL) return NULL;
memset(iso, 0, sizeof(isoFile));
strcpy(iso->filename, filename);
iso->handle = _openfile(iso->filename, O_RDONLY);
if (iso->handle == NULL)
{
printf("Error loading %s\n", iso->filename);
return NULL;
}
if (isoDetect(iso) == -1) return NULL;
printf("detected blocksize = %d\n", iso->blocksize);
if (strlen(iso->filename) > 3 && strncmp(iso->filename + (strlen(iso->filename) - 3), "I00", 3) == 0)
{
_closefile(iso->handle);
iso->flags |= ISOFLAGS_MULTI;
iso->blocks = 0;
for (i = 0; i < 8; i++)
{
iso->filename[strlen(iso->filename) - 1] = '0' + i;
iso->multih[i].handle = _openfile(iso->filename, O_RDONLY);
if (iso->multih[i].handle == NULL)
{
break;
}
iso->multih[i].slsn = iso->blocks;
_seekfile(iso->multih[i].handle, 0, SEEK_END);
iso->blocks += (u32)((_tellfile(iso->multih[i].handle) - iso->offset) /
(iso->blocksize));
iso->multih[i].elsn = iso->blocks - 1;
}
if (i == 0)
{
return NULL;
}
}
if (iso->flags == 0)
{
_seekfile(iso->handle, 0, SEEK_END);
iso->blocks = (u32)((_tellfile(iso->handle) - iso->offset) /
(iso->blocksize));
}
printf("isoOpen: %s ok\n", iso->filename);
printf("offset = %d\n", iso->offset);
printf("blockofs = %d\n", iso->blockofs);
printf("blocksize = %d\n", iso->blocksize);
printf("blocks = %d\n", iso->blocks);
printf("type = %d\n", iso->type);
return iso;
}
isoFile *isoCreate(const char *filename, int flags)
{
isoFile *iso;
char Zfile[256];
iso = (isoFile*)malloc(sizeof(isoFile));
if (iso == NULL) return NULL;
memset(iso, 0, sizeof(isoFile));
strcpy(iso->filename, filename);
iso->flags = flags;
iso->offset = 0;
iso->blockofs = 24;
iso->blocksize = CD_FRAMESIZE_RAW;
iso->blocksize = 2048;
if (iso->flags & (ISOFLAGS_Z | ISOFLAGS_Z2 | ISOFLAGS_BZ2))
{
sprintf(Zfile, "%s.table", iso->filename);
iso->htable = _openfile(Zfile, O_WRONLY);
if (iso->htable == NULL)
{
return NULL;
}
}
iso->handle = _openfile(iso->filename, O_WRONLY | O_CREAT);
if (iso->handle == NULL)
{
printf("Error loading %s\n", iso->filename);
return NULL;
}
printf("isoCreate: %s ok\n", iso->filename);
printf("offset = %d\n", iso->offset);
return iso;
}
int isoSetFormat(isoFile *iso, int blockofs, int blocksize, int blocks)
{
iso->blocksize = blocksize;
iso->blocks = blocks;
iso->blockofs = blockofs;
printf("blockofs = %d\n", iso->blockofs);
printf("blocksize = %d\n", iso->blocksize);
printf("blocks = %d\n", iso->blocks);
if (iso->flags & ISOFLAGS_Z2)
{
if (_writefile(iso->handle, "Z V2", 4) < 4) return -1;
if (_writefile(iso->handle, &blocksize, 4) < 4) return -1;
if (_writefile(iso->handle, &blocks, 4) < 4) return -1;
if (_writefile(iso->handle, &blockofs, 4) < 4) return -1;
}
if (iso->flags & ISOFLAGS_BZ2)
{
if (_writefile(iso->handle, "BZV2", 4) < 4) return -1;
if (_writefile(iso->handle, &blocksize, 4) < 4) return -1;
if (_writefile(iso->handle, &blocks, 4) < 4) return -1;
if (_writefile(iso->handle, &blockofs, 4) < 4) return -1;
iso->buflsn = -1;
iso->buffer = (u8*)malloc(iso->blocksize * 16);
if (iso->buffer == NULL) return -1;
}
if (iso->flags & ISOFLAGS_BLOCKDUMP)
{
if (_writefile(iso->handle, "BDV2", 4) < 4) return -1;
if (_writefile(iso->handle, &blocksize, 4) < 4) return -1;
if (_writefile(iso->handle, &blocks, 4) < 4) return -1;
if (_writefile(iso->handle, &blockofs, 4) < 4) return -1;
}
return 0;
}
s32 MSFtoLSN(u8 *Time)
{
u32 lsn;
lsn = Time[2];
lsn += (Time[1] - 2) * 75;
lsn += Time[0] * 75 * 60;
return lsn;
}
void LSNtoMSF(u8 *Time, s32 lsn)
{
u8 m, s, f;
lsn += 150;
m = lsn / 4500; // minuten
lsn = lsn - m * 4500; // minuten rest
s = lsn / 75; // sekunden
f = lsn - (s * 75); // sekunden rest
Time[0] = itob(m);
Time[1] = itob(s);
Time[2] = itob(f);
}
int _isoReadBlock(isoFile *iso, u8 *dst, int lsn)
{
u64 ofs = (u64)lsn * iso->blocksize + iso->offset;
int ret;
// printf("_isoReadBlock %d, blocksize=%d, blockofs=%d\n", lsn, iso->blocksize, iso->blockofs);
memset(dst, 0, iso->blockofs);
_seekfile(iso->handle, ofs, SEEK_SET);
ret = _readfile(iso->handle, dst + iso->blockofs, iso->blocksize);
if (ret < iso->blocksize)
{
printf("read error %d\n", ret);
return -1;
}
return 0;
}
int _isoReadBlockZ(isoFile *iso, u8 *dst, int lsn)
{
u32 pos, p;
uLongf size;
u8 Zbuf[CD_FRAMESIZE_RAW*2];
int ret;
// printf("_isoReadBlockZ %d, %d\n", lsn, iso->blocksize);
pos = *(unsigned long*) & iso->Ztable[lsn * 6];
p = *(unsigned short*) & iso->Ztable[lsn * 6 + 4];
// printf("%d, %d\n", pos, p);
_seekfile(iso->handle, pos, SEEK_SET);
ret = _readfile(iso->handle, Zbuf, p);
if (ret < p)
{
printf("error reading block!!\n");
return -1;
}
size = CD_FRAMESIZE_RAW;
uncompress(dst, &size, Zbuf, p);
return 0;
}
int _isoReadBlockZ2(isoFile *iso, u8 *dst, int lsn)
{
u32 pos, p;
uLongf size;
u8 Zbuf[16*1024];
int ret;
// printf("_isoReadBlockZ2 %d, %d\n", lsn, iso->blocksize);
pos = *(u32*) & iso->Ztable[lsn*8];
p = *(u32*) & iso->Ztable[lsn*8+4];
// printf("%d, %d\n", pos, p);
_seekfile(iso->handle, pos, SEEK_SET);
ret = _readfile(iso->handle, Zbuf, p);
if (ret < p)
{
printf("error reading block!!\n");
return -1;
}
size = iso->blocksize;
uncompress(dst + iso->blockofs, &size, Zbuf, p);
return 0;
}
int _isoReadBlockBZ2(isoFile *iso, u8 *dst, int lsn)
{
u32 pos, p;
u32 size;
u8 Zbuf[64*1024];
int ret;
if ((lsn / 16) == iso->buflsn)
{
memset(dst, 0, iso->blockofs);
memcpy(dst + iso->blockofs, iso->buffer + (iso->blocksize*(lsn&0xf)), iso->blocksize);
return 0;
}
iso->buflsn = lsn / 16;
// printf("_isoReadBlockBZ2 %d, %d\n", lsn, iso->blocksize);
pos = *(u32*) & iso->Ztable[(lsn/16)*8];
p = *(u32*) & iso->Ztable[(lsn/16)*8+4];
// printf("%d, %d\n", pos, p);
_seekfile(iso->handle, pos, SEEK_SET);
ret = _readfile(iso->handle, Zbuf, p);
if (ret < p)
{
printf("error reading block!!\n");
return -1;
}
size = iso->blocksize * 64;
ret = BZ2_bzBuffToBuffDecompress((s8*)iso->buffer, &size, (s8*)Zbuf, p, 0, 0);
if (ret != BZ_OK)
{
printf("_isoReadBlockBZ2 %d, %d\n", lsn, iso->blocksize);
printf("%d, %d\n", pos, p);
printf("error on BZ2: %d\n", ret);
}
memset(dst, 0, iso->blockofs);
memcpy(dst + iso->blockofs, iso->buffer + (iso->blocksize*(lsn&0xf)), iso->blocksize);
return 0;
}
int _isoReadBlockD(isoFile *iso, u8 *dst, int lsn)
{
int ret;
int i;
// printf("_isoReadBlockD %d, blocksize=%d, blockofs=%d\n", lsn, iso->blocksize, iso->blockofs);
memset(dst, 0, iso->blockofs);
for (i = 0; i < iso->dtablesize;i++)
{
if (iso->dtable[i] != lsn) continue;
_seekfile(iso->handle, 16 + i*(iso->blocksize + 4) + 4, SEEK_SET);
ret = _readfile(iso->handle, dst + iso->blockofs, iso->blocksize);
if (ret < iso->blocksize) return -1;
return 0;
}
printf("block %d not found in dump\n", lsn);
return -1;
}
int _isoReadBlockM(isoFile *iso, u8 *dst, int lsn)
{
u64 ofs;
int ret;
int i;
for (i = 0; i < 8; i++)
{
if (lsn >= iso->multih[i].slsn &&
lsn <= iso->multih[i].elsn)
{
break;
}
}
if (i == 8) return -1;
ofs = (u64)(lsn - iso->multih[i].slsn) * iso->blocksize + iso->offset;
// printf("_isoReadBlock %d, blocksize=%d, blockofs=%d\n", lsn, iso->blocksize, iso->blockofs);
memset(dst, 0, iso->blockofs);
_seekfile(iso->multih[i].handle, ofs, SEEK_SET);
ret = _readfile(iso->multih[i].handle, dst + iso->blockofs, iso->blocksize);
if (ret < iso->blocksize)
{
printf("read error %d\n", ret);
return -1;
}
return 0;
}
int isoReadBlock(isoFile *iso, u8 *dst, int lsn)
{
int ret;
if (lsn > iso->blocks)
{
printf("isoReadBlock: %d > %d\n", lsn, iso->blocks);
return -1;
}
if (iso->flags & ISOFLAGS_Z)
ret = _isoReadBlockZ(iso, dst, lsn);
else if (iso->flags & ISOFLAGS_Z2)
ret = _isoReadBlockZ2(iso, dst, lsn);
else if (iso->flags & ISOFLAGS_BLOCKDUMP)
ret = _isoReadBlockD(iso, dst, lsn);
else if (iso->flags & ISOFLAGS_MULTI)
ret = _isoReadBlockM(iso, dst, lsn);
else if (iso->flags & ISOFLAGS_BZ2)
ret = _isoReadBlockBZ2(iso, dst, lsn);
else
ret = _isoReadBlock(iso, dst, lsn);
if (ret == -1) return ret;
if (iso->type == ISOTYPE_CD)
{
LSNtoMSF(dst + 12, lsn);
dst[15] = 2;
}
return 0;
}
int _isoWriteBlock(isoFile *iso, u8 *src, int lsn)
{
u64 ofs = (u64)lsn * iso->blocksize + iso->offset;
int ret;
// printf("_isoWriteBlock %d (ofs=%d)\n", iso->blocksize, ofs);
_seekfile(iso->handle, ofs, SEEK_SET);
ret = _writefile(iso->handle, src + iso->blockofs, iso->blocksize);
// printf("_isoWriteBlock %d\n", ret);
if (ret < iso->blocksize) return -1;
return 0;
}
int _isoWriteBlockZ(isoFile *iso, u8 *src, int lsn)
{
u32 pos;
uLongf size;
u8 Zbuf[CD_FRAMESIZE_RAW];
int ret;
// printf("_isoWriteBlockZ %d\n", iso->blocksize);
size = 2352;
compress(Zbuf, &size, src, 2352);
// printf("_isoWriteBlockZ %d\n", size);
pos = (u32)_tellfile(iso->handle);
ret = _writefile(iso->htable, &pos, 4);
if (ret < 4) return -1;
ret = _writefile(iso->htable, &size, 2);
if (ret < 2) return -1;
ret = _writefile(iso->handle, Zbuf, size);
// printf("_isoWriteBlockZ %d\n", ret);
if (ret < size)
{
printf("error writing block!!\n");
return -1;
}
return 0;
}
int _isoWriteBlockZ2(isoFile *iso, u8 *src, int lsn)
{
uLongf size;
u8 Zbuf[1024*16];
int ret;
// printf("_isoWriteBlockZ %d\n", iso->blocksize);
size = 1024 * 16;
compress(Zbuf, &size, src + iso->blockofs, iso->blocksize);
// printf("_isoWriteBlockZ %d\n", size);
ret = _writefile(iso->htable, (u8*) & size, 4);
if (ret < 4) return -1;
ret = _writefile(iso->handle, Zbuf, size);
// printf("_isoWriteBlockZ %d\n", ret);
if (ret < size)
{
printf("error writing block!!\n");
return -1;
}
return 0;
}
int _isoWriteBlockD(isoFile *iso, u8 *src, int lsn)
{
int ret;
// printf("_isoWriteBlock %d (ofs=%d)\n", iso->blocksize, ofs);
ret = _writefile(iso->handle, &lsn, 4);
if (ret < 4) return -1;
ret = _writefile(iso->handle, src + iso->blockofs, iso->blocksize);
// printf("_isoWriteBlock %d\n", ret);
if (ret < iso->blocksize) return -1;
return 0;
}
int _isoWriteBlockBZ2(isoFile *iso, u8 *src, int lsn)
{
u32 size;
u8 Zbuf[64*1024];
int blocks;
int ret;
memcpy(iso->buffer + (iso->blocksize*(lsn&0xf)), src + iso->blockofs, iso->blocksize);
if (lsn == (iso->blocks - 1))
{
blocks = (lsn & 0xf) + 1;
}
else
{
blocks = 16;
if ((lsn & 0xf) != 0xf) return 0;
}
// printf("_isoWriteBlockBZ2 %d\n", iso->blocksize);
size = 64 * 1024;
ret = BZ2_bzBuffToBuffCompress((s8*)Zbuf, (u32*) & size, (s8*)iso->buffer, iso->blocksize * blocks, 9, 0, 30);
if (ret != BZ_OK)
{
printf("error on BZ2: %d\n", ret);
}
// printf("_isoWriteBlockBZ2 %d\n", size);
ret = _writefile(iso->htable, (u8*) & size, 4);
if (ret < 4) return -1;
ret = _writefile(iso->handle, Zbuf, size);
// printf("_isoWriteBlockZ %d\n", ret);
if (ret < size)
{
printf("error writing block!!\n");
return -1;
}
return 0;
}
int isoWriteBlock(isoFile *iso, u8 *src, int lsn)
{
int ret;
if (iso->flags & ISOFLAGS_Z)
ret = _isoWriteBlockZ(iso, src, lsn);
else if (iso->flags & ISOFLAGS_Z2)
ret = _isoWriteBlockZ2(iso, src, lsn);
else if (iso->flags & ISOFLAGS_BLOCKDUMP)
ret = _isoWriteBlockD(iso, src, lsn);
else if (iso->flags & ISOFLAGS_BZ2)
ret = _isoWriteBlockBZ2(iso, src, lsn);
else
ret = _isoWriteBlock(iso, src, lsn);
if (ret == -1) return ret;
return 0;
}
void isoClose(isoFile *iso)
{
if (iso->handle) _closefile(iso->handle);
if (iso->htable) _closefile(iso->htable);
if (iso->buffer) free(iso->buffer);
free(iso);
}