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4.1. If Q-CRC of QCurrentSector doesn't match: QGenSector = QNextSector - 1 frame (MSF - 1, AMSF - 1, fix Q-CRC).
  4.2. You do a binary compare (96 bits vs 96 bits) between QCurrentSector and QGenSector and count a number of bits that differ. If their count is <= FixLevel: QCurrentSector = QGenSector and go to p.5.

4.3. If QEAN != null, you do a binary compare between QCurrentSector and QEAN and count a number of bits that differ. If their count is <= FixLevel: QCurrentSector = QEAN and go to p.5.
  4.4. If QISRC != null, you do a binary compare between QCurrentSector and QISRC and count a number bits that differ. If their count is <= FixLevel: QCurrentSector = QISRC and go to p.5.

bparker wrote:Hi @sarami, could you push your current code with the linux support to github so I can take a look at some of the issues? Thanks!

user7 wrote:Back to dumping PS4 official kiosk discs, which are on BD-Rs, different hashes and iso sizes are returned every dump.

user7 wrote:I dumped with ISO Buster twice, different checksums and different sizes both times, discs are in flawless condition.

user7 wrote:Official Kiosk discs are BD-Rs

sarami wrote:1. What FixLevel? Default of subdump is 96?

sarami wrote:2. If QNextSector is 1st pregap sector, Is QGenSector really correct?
3. If QCurrentSector is track 1 and QNextSector is track 2, is QGenSector really correct?
4. If QCurrentSector is index 1 and QNextSector is index 2, is QGenSector really correct?
5. If QCurrentSector is ctl 0 and QNextSector is ctl 4, is QGenSector really correct?

6. If adr of QCurrentSector is 1 but actually QCurrentSector is EAN sector, is the adr really fixed?
7. If adr of QCurrentSector is 3 but actually QCurrentSector is EAN sector, is the adr really fixed?
8. If adr of QCurrentSector is 2 but actually QCurrentSector is ISRC sector, is the adr really fixed?
9. If adr of QCurrentSector is 2 but actually QCurrentSector is normal sector, is the adr really fixed?

10. Does this algo support all SecuROM (at least 4 patterns) and Libcrypt?

sarami wrote:Like this?

Code: Select all

if (Q-CRC of QCurrentSector is bad) {
    create QGenSector from QNextSector - 1
    
    compare 96bits of QCurrentSector and QGenSector
    
    if (these sectors have 1-bit error) {
        try to change each bit to opposite (Max 96 times?)
    }
    else if (these sectors have 2 or more bit errors) {
        reread sector (*1)
    }
}

if (Q-CRC of QCurrentSector is bad) {
    create QGenSector from QNextSector - 1
    
    compare 96bits of QCurrentSector and QGenSector
    
    if (these sectors have >[FixLevel]-bit error) {
        QCurrentSector = QGenSector
    }
    else {
        try to change each bit to opposite (Max 96 times)    // for the case when QCurrentSector and QGenSector are different
        if not success {     
           reread sector (*1)
    }
}

if (Q-CRC of QCurrentSector is bad) {
    create QGenSector1 from QNextSector - 1
    
    compare 96bits of QCurrentSector and QGenSector1
    
    if (these sectors have >[FixLevel]-bit error) {
        QCurrentSector = QGenSector1
    }
    else {
       create QGenSector2 from QPrevSector + 1

       compare 96bits of QCurrentSector and QGenSector2

       if (these sectors have >[FixLevel]-bit error) {
        QCurrentSector = QGenSector2
       }
       else {   
          try to change each bit to opposite (Max 96 times)    // for the case when QCurrentSector and QGenSector are different
          if not success {     
             reread sector (*1)
          }
       }
    }

Question
(*1). How many times subdump reread the sector? If it can't get the good Q-CRC, is the sector written to file with being bad?