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516 lines
14 KiB
516 lines
14 KiB
/*
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*
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* $Id: k3bdatatrackreader.cpp 690529 2007-07-21 10:51:47Z trueg $
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* Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
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*
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* This file is part of the K3b project.
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* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* See the file "COPYING" for the exact licensing terms.
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*/
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#include "k3bdatatrackreader.h"
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#include <k3blibdvdcss.h>
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#include <k3bdevice.h>
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#include <k3bdeviceglobals.h>
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#include <k3btrack.h>
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#include <k3bthread.h>
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#include <k3bcore.h>
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#include <klocale.h>
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#include <kdebug.h>
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#include <tqfile.h>
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#include <unistd.h>
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// FIXME: determine max DMA buffer size
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static int s_bufferSizeSectors = 10;
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class K3bDataTrackReader::WorkThread : public K3bThread
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{
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public:
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WorkThread();
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~WorkThread();
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void init();
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void run();
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int read( unsigned char* buffer, unsigned long sector, unsigned int len );
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bool retryRead( unsigned char* buffer, unsigned long startSector, unsigned int len );
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bool setErrorRecovery( K3bDevice::Device* dev, int code );
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void cancel();
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bool m_canceled;
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bool m_ignoreReadErrors;
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bool m_noCorrection;
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int m_retries;
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K3bDevice::Device* m_device;
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K3b::Msf m_firstSector;
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K3b::Msf m_lastSector;
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K3b::Msf m_nextReadSector;
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int m_fd;
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TQString m_imagePath;
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int m_sectorSize;
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bool m_useLibdvdcss;
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K3bLibDvdCss* m_libcss;
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int m_oldErrorRecoveryMode;
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int m_errorSectorCount;
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private:
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int m_usedSectorSize;
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};
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K3bDataTrackReader::K3bDataTrackReader( K3bJobHandler* jh, TQObject* parent, const char* name )
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: K3bThreadJob( jh, parent, name )
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{
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m_thread = new WorkThread();
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setThread( m_thread );
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}
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K3bDataTrackReader::WorkThread::WorkThread()
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: K3bThread(),
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m_canceled(false),
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m_ignoreReadErrors(false),
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m_noCorrection(false),
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m_retries(10),
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m_device(0),
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m_fd(-1),
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m_libcss(0)
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{
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}
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K3bDataTrackReader::WorkThread::~WorkThread()
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{
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delete m_libcss;
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}
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void K3bDataTrackReader::WorkThread::init()
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{
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m_canceled = false;
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}
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void K3bDataTrackReader::WorkThread::run()
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{
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emitStarted();
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if( !m_device->open() ) {
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emitInfoMessage( i18n("Could not open device %1").tqarg(m_device->blockDeviceName()), K3bJob::ERROR );
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emitFinished(false);
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return;
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}
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// 1. determine sector size by checking the first sectors mode
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// if impossible or MODE2 (mode2 formless) finish(false)
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m_useLibdvdcss = false;
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m_usedSectorSize = m_sectorSize;
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if( m_device->isDVD() ) {
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m_usedSectorSize = MODE1;
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//
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// In case of an encrypted VideoDVD we read with libdvdcss which takes care of decrypting the vobs
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//
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if( m_device->copyrightProtectionSystemType() == 1 ) {
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// close the device for libdvdcss
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m_device->close();
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kdDebug() << "(K3bDataTrackReader::WorkThread) found encrypted dvd. using libdvdcss." << endl;
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// open the libdvdcss stuff
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if( !m_libcss )
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m_libcss = K3bLibDvdCss::create();
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if( !m_libcss ) {
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emitInfoMessage( i18n("Unable to open libdvdcss."), K3bJob::ERROR );
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emitFinished(false);
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return;
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}
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if( !m_libcss->open(m_device) ) {
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emitInfoMessage( i18n("Could not open device %1").tqarg(m_device->blockDeviceName()), K3bJob::ERROR );
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emitFinished(false);
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return;
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}
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emitInfoMessage( i18n("Retrieving all CSS keys. This might take a while."), K3bJob::INFO );
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if( !m_libcss->crackAllKeys() ) {
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m_libcss->close();
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emitInfoMessage( i18n("Failed to retrieve all CSS keys."), K3bJob::ERROR );
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emitInfoMessage( i18n("Video DVD decryption failed."), K3bJob::ERROR );
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emitFinished(false);
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return;
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}
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m_useLibdvdcss = true;
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}
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}
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else {
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if( m_usedSectorSize == AUTO ) {
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switch( m_device->getDataMode( m_firstSector ) ) {
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case K3bDevice::Track::MODE1:
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case K3bDevice::Track::DVD:
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m_usedSectorSize = MODE1;
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break;
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case K3bDevice::Track::XA_FORM1:
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m_usedSectorSize = MODE2FORM1;
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break;
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case K3bDevice::Track::XA_FORM2:
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m_usedSectorSize = MODE2FORM2;
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break;
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case K3bDevice::Track::MODE2:
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emitInfoMessage( i18n("No support for reading formless Mode2 sectors."), K3bJob::ERROR );
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default:
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emitInfoMessage( i18n("Unsupported sector type."), K3bJob::ERROR );
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m_device->close();
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emitFinished(false);
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return;
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}
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}
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}
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emitInfoMessage( i18n("Reading with sector size %1.").tqarg(m_usedSectorSize), K3bJob::INFO );
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emitDebuggingOutput( "K3bDataTrackReader",
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TQString("reading sectors %1 to %2 with sector size %3. Length: %4 sectors, %5 bytes.")
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.tqarg( m_firstSector.lba() )
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.tqarg( m_lastSector.lba() )
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.tqarg( m_usedSectorSize )
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.tqarg( m_lastSector.lba() - m_firstSector.lba() + 1 )
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.tqarg( TQ_UINT64(m_usedSectorSize) * (TQ_UINT64)(m_lastSector.lba() - m_firstSector.lba() + 1) ) );
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TQFile file;
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if( m_fd == -1 ) {
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file.setName( m_imagePath );
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if( !file.open( IO_WriteOnly ) ) {
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m_device->close();
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if( m_useLibdvdcss )
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m_libcss->close();
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emitInfoMessage( i18n("Unable to open '%1' for writing.").tqarg(m_imagePath), K3bJob::ERROR );
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emitFinished( false );
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return;
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}
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}
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k3bcore->blockDevice( m_device );
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m_device->block( true );
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//
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// set the error recovery mode to 0x21 or 0x20 depending on m_ignoreReadErrors
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// TODO: should we also set RC=1 in m_ignoreReadErrors mode (0x11 because TB is ignored)
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//
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setErrorRecovery( m_device, m_noCorrection ? 0x21 : 0x20 );
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//
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// Let the drive determine the optimal reading speed
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//
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m_device->setSpeed( 0xffff, 0xffff );
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s_bufferSizeSectors = 128;
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unsigned char* buffer = new unsigned char[m_usedSectorSize*s_bufferSizeSectors];
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while( s_bufferSizeSectors > 0 && read( buffer, m_firstSector.lba(), s_bufferSizeSectors ) < 0 ) {
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kdDebug() << "(K3bDataTrackReader) determine max read sectors: "
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<< s_bufferSizeSectors << " too high." << endl;
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s_bufferSizeSectors--;
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}
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kdDebug() << "(K3bDataTrackReader) determine max read sectors: "
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<< s_bufferSizeSectors << " is max." << endl;
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// s_bufferSizeSectors = K3bDevice::determineMaxReadingBufferSize( m_device, m_firstSector );
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if( s_bufferSizeSectors <= 0 ) {
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emitInfoMessage( i18n("Error while reading sector %1.").tqarg(m_firstSector.lba()), K3bJob::ERROR );
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emitFinished(false);
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m_device->block( false );
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k3bcore->unblockDevice( m_device );
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return;
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}
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kdDebug() << "(K3bDataTrackReader) using buffer size of " << s_bufferSizeSectors << " blocks." << endl;
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emitDebuggingOutput( "K3bDataTrackReader", TQString("using buffer size of %1 blocks.").tqarg( s_bufferSizeSectors ) );
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// 2. get it on
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K3b::Msf currentSector = m_firstSector;
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K3b::Msf totalReadSectors;
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m_nextReadSector = 0;
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m_errorSectorCount = 0;
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bool writeError = false;
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bool readError = false;
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int lastPercent = 0;
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unsigned long lastReadMb = 0;
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int bufferLen = s_bufferSizeSectors*m_usedSectorSize;
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while( !m_canceled && currentSector <= m_lastSector ) {
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int maxReadSectors = TQMIN( bufferLen/m_usedSectorSize, m_lastSector.lba()-currentSector.lba()+1 );
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int readSectors = read( buffer,
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currentSector.lba(),
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maxReadSectors );
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if( readSectors < 0 ) {
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if( !retryRead( buffer,
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currentSector.lba(),
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maxReadSectors ) ) {
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readError = true;
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break;
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}
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else
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readSectors = maxReadSectors;
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}
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totalReadSectors += readSectors;
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int readBytes = readSectors * m_usedSectorSize;
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if( m_fd != -1 ) {
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if( ::write( m_fd, reinterpret_cast<void*>(buffer), readBytes ) != readBytes ) {
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kdDebug() << "(K3bDataTrackReader::WorkThread) error while writing to fd " << m_fd
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<< " current sector: " << (currentSector.lba()-m_firstSector.lba()) << endl;
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emitDebuggingOutput( "K3bDataTrackReader",
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TQString("Error while writing to fd %1. Current sector is %2.")
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.tqarg(m_fd).tqarg(currentSector.lba()-m_firstSector.lba()) );
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writeError = true;
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break;
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}
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}
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else {
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if( file.writeBlock( reinterpret_cast<char*>(buffer), readBytes ) != readBytes ) {
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kdDebug() << "(K3bDataTrackReader::WorkThread) error while writing to file " << m_imagePath
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<< " current sector: " << (currentSector.lba()-m_firstSector.lba()) << endl;
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emitDebuggingOutput( "K3bDataTrackReader",
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TQString("Error while writing to file %1. Current sector is %2.")
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.tqarg(m_imagePath).tqarg(currentSector.lba()-m_firstSector.lba()) );
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writeError = true;
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break;
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}
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}
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currentSector += readSectors;
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int percent = 100 * (currentSector.lba() - m_firstSector.lba() + 1 ) /
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(m_lastSector.lba() - m_firstSector.lba() + 1 );
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if( percent > lastPercent ) {
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lastPercent = percent;
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emitPercent( percent );
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}
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unsigned long readMb = (currentSector.lba() - m_firstSector.lba() + 1) / 512;
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if( readMb > lastReadMb ) {
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lastReadMb = readMb;
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emitProcessedSize( readMb, ( m_lastSector.lba() - m_firstSector.lba() + 1 ) / 512 );
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}
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}
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if( m_errorSectorCount > 0 )
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emitInfoMessage( i18n("Ignored %n erroneous sector.", "Ignored a total of %n erroneous sectors.", m_errorSectorCount ),
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K3bJob::ERROR );
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// reset the error recovery mode
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setErrorRecovery( m_device, m_oldErrorRecoveryMode );
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m_device->block( false );
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k3bcore->unblockDevice( m_device );
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// cleanup
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if( m_useLibdvdcss )
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m_libcss->close();
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m_device->close();
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delete [] buffer;
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emitDebuggingOutput( "K3bDataTrackReader",
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TQString("Read a total of %1 sectors (%2 bytes)")
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.tqarg(totalReadSectors.lba())
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.tqarg((TQ_UINT64)totalReadSectors.lba()*(TQ_UINT64)m_usedSectorSize) );
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if( m_canceled )
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emitCanceled();
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emitFinished( !m_canceled && !writeError && !readError );
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}
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int K3bDataTrackReader::WorkThread::read( unsigned char* buffer, unsigned long sector, unsigned int len )
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{
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//
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// Encrypted DVD reading with libdvdcss
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//
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if( m_useLibdvdcss ) {
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return m_libcss->readWrapped( reinterpret_cast<void*>(buffer), sector, len );
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}
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//
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// Standard reading
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//
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else {
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bool success = false;
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// setErrorRecovery( m_device, m_ignoreReadErrors ? 0x21 : 0x20 );
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if( m_usedSectorSize == 2048 )
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success = m_device->read10( buffer, len*2048, sector, len );
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else
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success = m_device->readCd( buffer,
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len*m_usedSectorSize,
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0, // all sector types
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false, // no dap
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sector,
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len,
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false, // no sync
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false, // no header
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m_usedSectorSize != MODE1, // subheader
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true, // user data
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false, // no edc/ecc
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0, // no c2 error info... FIXME: should we check this??
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0 // no subchannel data
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);
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if( success )
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return len;
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else
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return -1;
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}
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}
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// here we read every single sector for itself to find the troubleing ones
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bool K3bDataTrackReader::WorkThread::retryRead( unsigned char* buffer, unsigned long startSector, unsigned int len )
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{
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emitDebuggingOutput( "K3bDataTrackReader", TQString( "Problem while reading. Retrying from sector %1.").tqarg(startSector) );
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emitInfoMessage( i18n("Problem while reading. Retrying from sector %1.").tqarg(startSector), K3bJob::WARNING );
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int sectorsRead = -1;
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bool success = true;
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for( unsigned long sector = startSector; sector < startSector+len; ++sector ) {
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int retry = m_retries;
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while( !m_canceled && retry && (sectorsRead = read( &buffer[( sector - startSector ) * m_usedSectorSize], sector, 1 )) < 0 )
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--retry;
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success = ( sectorsRead > 0 );
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if( m_canceled )
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return false;
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if( !success ) {
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if( m_ignoreReadErrors ) {
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emitInfoMessage( i18n("Ignoring read error in sector %1.").tqarg(sector), K3bJob::ERROR );
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emitDebuggingOutput( "K3bDataTrackReader", TQString( "Ignoring read error in sector %1.").tqarg(sector) );
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++m_errorSectorCount;
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// ::memset( &buffer[i], 0, 1 );
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success = true;
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}
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else {
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emitInfoMessage( i18n("Error while reading sector %1.").tqarg(sector), K3bJob::ERROR );
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emitDebuggingOutput( "K3bDataTrackReader", TQString( "Read error in sector %1.").tqarg(sector) );
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break;
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}
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}
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}
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return success;
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}
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bool K3bDataTrackReader::WorkThread::setErrorRecovery( K3bDevice::Device* dev, int code )
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{
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unsigned char* data = 0;
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unsigned int dataLen = 0;
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if( !dev->modeSense( &data, dataLen, 0x01 ) )
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return false;
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// in MMC1 the page has 8 bytes (12 in MMC4 but we only need the first 3 anyway)
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if( dataLen < 8+8 ) {
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kdDebug() << "(K3bDataTrackReader) modepage 0x01 data too small: " << dataLen << endl;
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delete [] data;
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return false;
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}
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m_oldErrorRecoveryMode = data[8+2];
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data[8+2] = code;
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if( m_oldErrorRecoveryMode != code )
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kdDebug() << "(K3bDataTrackReader) changing data recovery mode from " << m_oldErrorRecoveryMode << " to " << code << endl;
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bool success = dev->modeSelect( data, dataLen, true, false );
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delete [] data;
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return success;
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}
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void K3bDataTrackReader::WorkThread::cancel()
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{
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m_canceled = true;
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}
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K3bDataTrackReader::~K3bDataTrackReader()
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{
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delete m_thread;
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}
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void K3bDataTrackReader::setDevice( K3bDevice::Device* dev )
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{
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m_thread->m_device = dev;
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}
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void K3bDataTrackReader::setSectorRange( const K3b::Msf& start, const K3b::Msf& end )
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{
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m_thread->m_firstSector = start;
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m_thread->m_lastSector = end;
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}
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void K3bDataTrackReader::setRetries( int r )
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{
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m_thread->m_retries = r;
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}
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void K3bDataTrackReader::setIgnoreErrors( bool b )
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{
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m_thread->m_ignoreReadErrors = b;
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}
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void K3bDataTrackReader::setNoCorrection( bool b )
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{
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m_thread->m_noCorrection = b;
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}
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void K3bDataTrackReader::writeToFd( int fd )
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{
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m_thread->m_fd = fd;
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}
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void K3bDataTrackReader::setImagePath( const TQString& p )
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{
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m_thread->m_imagePath = p;
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m_thread->m_fd = -1;
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}
|
|
|
|
|
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void K3bDataTrackReader::setSectorSize( SectorSize size )
|
|
{
|
|
m_thread->m_sectorSize = size;
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|
}
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