[K3b] [PATCH] defect dvd copy problems V0.1

[Thomas Schorpp]

heres the first patch to k3b to solve read and copy problems with defect 
dvds.

use only at low speeds.

--- usr/local/src/k3b-0.11.14/src/device/k3bdevice.cpp 2004-08-10 
09:45:21.000000000 +0200
+++ home/schorpp/k3b-0.11.14/src/device/k3bdevice.cpp 2004-09-02 
01:14:08.000000000 +0200
@@ -2934,7 +2934,32 @@
          bool fua ) const
  {
    ::memset( data, 0, dataLen );
-
+
+  ScsiCommand cmd1( this );
+  cmd1[0] = MMC::MODE_SELECT;
+  cmd1[1] = 0x00; //Mode Parameter Header -Mode Data Length MSB
+  cmd1[2] = 0x00; //Mode Data Length lSB - both reserved due cmd 
mode-select
+  cmd1[3] = 0x00;
+  cmd1[4] = 0x00;
+  cmd1[5] = 0x00;
+  cmd1[6] = 0x00;
+  cmd1[7] = 0x00;
+  cmd1[8] = 0x00;
+  cmd1[9] = 0x01; //Read/Write Error Recovery Parameters Page
+  cmd1[10] = 0x0A;
+  cmd1[11] = 0x10; //FIXME Error Recovery modes (RC set), (speed)
+  cmd1[12] = 0x00;
+  cmd1[13] = 0x00;
+  cmd1[14] = 0x00;
+  cmd1[15] = 0x00;
+  cmd1[16] = 0x00;
+  cmd1[17] = 0x00;
+  cmd1[18] = 0x00;
+  cmd1[19] = 0x00;
+  cmd1[20] = 0x00; //End
+  cmd1.transport();
+
+
    ScsiCommand cmd( this );
    cmd[0] = MMC::READ_10;
    cmd[1] = ( fua ? 0x8 : 0x0 );
@@ -2948,6 +2973,8 @@
    if( cmd.transport( TR_DIR_READ, data, dataLen ) ) {
      kdDebug() << "(K3bCdDevice::CdDevice) " << blockDeviceName() << ": 
READ 10 failed!" << endl;
      return false;
+
+
    }
    else
      return true;


Thomas Schorpp wrote:
> Thomas Schorpp wrote:
> 
>> hi yours,
>>
>> i got one problem with my dvd reader under k3b:
>>
>> in spite set ignore read errors and retries to 1 (0 isnt possible) the
>> drive slows down and tries to recalibrate on reading in dvd images, so
>> the process is to be aborted cos only 1sector/2sec speed left.
>>
>> i can do c,c++ but i have no knowlegde about those drive cmds.
>>
>> which and which sequence do you suggest to keep the drive at full speed?
>>
>> same problem using dd with noerr option.
>>
>> thx,
>> tom
>>
> 
> ive implemented read retries =0 yesterday, no success, drive spun down.
> 
> i like to try mmc mode-select RC=1 to turn off hw error correction and 
> implement a sw scratches error correction in k3b.
> is there oss code for sw sector correction anywhere?
> 
> got the mmc-2/-3 specs, bunch of paper...
> 
> a quick reference or the correct cmd sequence for RC mode-select would 
> be helpful here.
> 
> 
> 
> 
> _______________________________________________
> kde-multimedia mailing list
> kde-multimedia at kde.org
> https://mail.kde.org/mailman/listinfo/kde-multimedia
> 
> 

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