/**
* Maps ICB to FileAD
* ICB: Location of ICB of directory to scan
* FileType: Type of the file
* File: Location of file the ICB is pointing to
* return 1 on success, 0 on error;
*/
static int UDFMapICB( dvd_reader_t *device, struct AD ICB, uint8_t *FileType,
struct Partition *partition, struct AD *File )
{
uint8_t LogBlock_base[DVD_VIDEO_LB_LEN + 2048];
uint8_t *LogBlock = (uint8_t *)(((uintptr_t)LogBlock_base & ~((uintptr_t)2047)) + 2048);
uint32_t lbnum;
uint16_t TagID;
struct icbmap tmpmap;
lbnum = partition->Start + ICB.Location;
tmpmap.lbn = lbnum;
if(GetUDFCache(device, MapCache, lbnum, &tmpmap)) {
*FileType = tmpmap.filetype;
memcpy(File, &tmpmap.file, sizeof(tmpmap.file));
return 1;
}
do {
if( DVDReadLBUDF( device, lbnum++, 1, LogBlock, 0 ) <= 0 )
TagID = 0;
else
UDFDescriptor( LogBlock, &TagID );
if( TagID == 261 ) {
UDFFileEntry( LogBlock, FileType, partition, File );
memcpy(&tmpmap.file, File, sizeof(tmpmap.file));
tmpmap.filetype = *FileType;
SetUDFCache(device, MapCache, tmpmap.lbn, &tmpmap);
return 1;
};
} while( ( lbnum <= partition->Start + ICB.Location + ( ICB.Length - 1 )
/ DVD_VIDEO_LB_LEN ) && ( TagID != 261 ) );
return 0;
}
/**
* Maps ICB to FileAD
* ICB: Location of ICB of directory to scan
* FileType: Type of the file
* File: Location of file the ICB is pointing to
* return 1 on success, 0 on error;
*/
static int UDFMapICB( UDF_DATA *device, struct AD ICB, uint8_t *FileType,
struct Partition *partition, struct AD *File )
{
uint8_t LogBlock_base[DVD_VIDEO_LB_LEN + 2048];
uint8_t *LogBlock = (uint8_t *)(((uintptr_t)LogBlock_base & ~((uintptr_t)2047)) + 2048);
uint32_t lbnum;
uint16_t TagID;
struct icbmap tmpmap;
//lbnum = partition->Start + ICB.Location;
lbnum = UDFGetBlock(partition, ICB.Partition, ICB.Location);
//printf("lbnum: %d\n", lbnum);
tmpmap.lbn = lbnum;
if(GetBDUDFCache(device, MapCache, lbnum, &tmpmap)) {
*FileType = tmpmap.filetype;
memcpy(File, &tmpmap.file, sizeof(tmpmap.file));
return 1;
}
do {
if( DVDReadLBUDF( device, lbnum++, 1, LogBlock, 0 ) <= 0 ) {
return 0;
TagID = 0;
} else
UDFDescriptor( LogBlock, &TagID );
//printf("icb tagid: %d\n", TagID);
if( TagID == 261 ) {
UDFFileEntry( LogBlock, FileType, partition, File );
memcpy(&tmpmap.file, File, sizeof(tmpmap.file));
tmpmap.filetype = *FileType;
SetUDFCache(device, MapCache, tmpmap.lbn, &tmpmap);
return 1;
}
else if ( TagID == 266 )
{
UDFExtFileEntry( LogBlock, FileType, partition, File );
//printf("in file: part: %u, block: %u\n", File->Partition, File->Location);
memcpy(&tmpmap.file, File, sizeof(tmpmap.file));
tmpmap.filetype = *FileType;
SetUDFCache(device, MapCache, tmpmap.lbn, &tmpmap);
return 1;
}
} while( ( lbnum <= lbnum + ( ICB.Length - 1 )
/ DVD_VIDEO_LB_LEN ) && ( TagID != 261 ) );
return 0;
}
/**
* Maps ICB to FileAD
* ICB: Location of ICB of directory to scan
* FileType: Type of the file
* File: Location of file the ICB is pointing to
* return 1 on success, 0 on error;
*/
static int UDFMapICB( dvd_reader_t *device, struct AD ICB, uint8_t *FileType,
struct Partition *partition, struct AD *File )
{
uint8_t *LogBlock;
uint32_t lbnum;
uint16_t TagID;
struct icbmap tmpmap;
lbnum = partition->Start + ICB.Location;
tmpmap.lbn = lbnum;
if(GetUDFCache(device, MapCache, lbnum, &tmpmap)) {
*FileType = tmpmap.filetype;
*File = tmpmap.file;
return 1;
}
LogBlock = dvdalign_lbmalloc(device, 1);
if(!LogBlock) {
return 0;
}
do {
if( DVDReadLBUDF( device, lbnum++, 1, LogBlock, 0 ) <= 0 ) {
TagID = 0;
} else {
UDFDescriptor( LogBlock, &TagID );
}
if( TagID == 261 ) {
UDFFileEntry( LogBlock, FileType, partition, File );
tmpmap.file = *File;
tmpmap.filetype = *FileType;
SetUDFCache(device, MapCache, tmpmap.lbn, &tmpmap);
dvdalign_lbfree(device, LogBlock);
return 1;
};
} while( ( lbnum <= partition->Start + ICB.Location + ( ICB.Length - 1 )
/ DVD_VIDEO_LB_LEN ) && ( TagID != 261 ) );
dvdalign_lbfree(device, LogBlock);
return 0;
}
