static int UDFFileEntry( uint8_t *data, uint8_t *FileType,
struct Partition *partition, struct AD *ad )
{
uint16_t flags;
uint32_t L_EA, L_AD;
unsigned int p;
UDFICB( &data[ 16 ], FileType, &flags );
/* Init ad for an empty file (i.e. there isn't a AD, L_AD == 0 ) */
ad->Length = GETN4( 60 ); /* Really 8 bytes a 56 */
ad->Flags = 0;
ad->Location = 0; /* what should we put here? */
ad->Partition = partition->Number; /* use number of current partition */
L_EA = GETN4( 168 );
L_AD = GETN4( 172 );
if (176 + L_EA + L_AD > DVD_VIDEO_LB_LEN)
return 0;
p = 176 + L_EA;
while( p < 176 + L_EA + L_AD ) {
switch( flags & 0x0007 ) {
case 0:
UDFShortAD( &data[ p ], ad, partition );
p += 8;
break;
case 1:
UDFLongAD( &data[ p ], ad );
p += 16;
break;
case 2:
UDFExtAD( &data[ p ], ad );
p += 20;
break;
case 3:
switch( L_AD ) {
case 8:
UDFShortAD( &data[ p ], ad, partition );
break;
case 16:
UDFLongAD( &data[ p ], ad );
break;
case 20:
UDFExtAD( &data[ p ], ad );
break;
}
p += L_AD;
break;
default:
p += L_AD;
break;
}
}
return 0;
}
static int UDFAD( quint8 *ptr, quint32 len, struct FileAD *fad)
{
struct AD *ad;
if (fad->num_AD >= UDF_MAX_AD_CHAINS)
return len;
ad = &fad->AD_chain[fad->num_AD];
ad->Partition = fad->Partition;
ad->Flags = 0;
fad->num_AD++;
switch( fad->Flags & 0x0007 ) {
case 0:
UDFShortAD( ptr, ad );
return 8;
case 1:
UDFLongAD( ptr, ad );
return 16;
case 2:
UDFExtAD( ptr, ad );
return 20;
case 3:
switch( len ) {
case 8:
UDFShortAD( ptr, ad );
break;
case 16:
UDFLongAD( ptr, ad );
break;
case 20:
UDFExtAD( ptr, ad );
break;
}
break;
default:
break;
}
return len;
}
static int UDFExtFileEntry(uint8_t *data, struct Partition *partition, struct AD *ad)
{
int nRet = -1;
uint8_t FileType;
uint16_t TagID;
uint16_t flags;
uint32_t L_EA, L_AD;
unsigned int p;
UDFDescriptor( data, &TagID );
if (TagID != 266)
{
//printf("Not ExtFileEntry!!!\n");
return nRet;
}
UDFICB( &data[ 16 ], &FileType, &flags );
ad->Length = GETN4( 60 ); /* Really 8 bytes a 56 */
ad->Flags = 0;
ad->Location = 0; /* what should we put here? */
ad->Partition = partition->Number; /* use number of current partition */
L_EA = GETN4( 208 );
L_AD = GETN4( 212 );
if (216 + L_EA + L_AD > DVD_VIDEO_LB_LEN)
return nRet;
p = 216 + L_EA;
while( p < 216 + L_EA + L_AD ) {
switch( flags & 0x0007 ) {
case 0:
UDFShortAD( &data[ p ], ad, partition );
p += 8;
break;
case 1:
UDFLongAD( &data[ p ], ad );
p += 16;
break;
default:
p += L_AD;
break;
}
}
return nRet;
}
static int UDFExtFileEntry( uint8_t *data, uint8_t *FileType,
struct Partition *partition, struct AD *ad )
{
uint16_t flags;
uint32_t L_EA, L_AD;
unsigned int p;
struct AD temp_ad;
int is_init = 0;
memset((void *)&temp_ad, 0, sizeof(struct AD));
UDFICB( &data[ 16 ], FileType, &flags );
/* Init ad for an empty file (i.e. there isn't a AD, L_AD == 0 ) */
//ad->Length = GETN4( 60 ); /* Really 8 bytes a 56 */
ad->Length = 0;
ad->Flags = 0;
ad->Location = 0; /* what should we put here? */
ad->Partition = partition->Number; /* use number of current partition */
L_EA = GETN4( 208 );
L_AD = GETN4( 212 );
if (216 + L_EA + L_AD > DVD_VIDEO_LB_LEN)
return 0;
p = 216 + L_EA;
while( p < 216 + L_EA + L_AD ) {
switch( flags & 0x0007 ) {
case 0:
UDFShortAD( &data[ p ], &temp_ad, partition );
p += 8;
break;
case 1:
UDFLongAD( &data[ p ], &temp_ad );
p += 16;
break;
case 2:
UDFExtAD( &data[ p ], &temp_ad );
p += 20;
break;
case 3:
switch( L_AD ) {
case 8:
UDFShortAD( &data[ p ], &temp_ad, partition );
break;
case 16:
UDFLongAD( &data[ p ], &temp_ad );
break;
case 20:
UDFExtAD( &data[ p ], &temp_ad );
break;
}
p += L_AD;
break;
default:
p += L_AD;
break;
}
if (is_init == 0)
{
memcpy((void *)ad, (void *)&temp_ad, sizeof(struct AD));
is_init = 1;
} else {
// only update file size
ad->Length += temp_ad.Length;
}
}
return 0;
}
