diff options
Diffstat (limited to 'libk3b/tools/k3biso9660backend.cpp')
| -rw-r--r-- | libk3b/tools/k3biso9660backend.cpp | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/libk3b/tools/k3biso9660backend.cpp b/libk3b/tools/k3biso9660backend.cpp new file mode 100644 index 0000000..aacc079 --- /dev/null +++ b/libk3b/tools/k3biso9660backend.cpp @@ -0,0 +1,239 @@ +/* + * + * $Id: sourceheader 380067 2005-01-19 13:03:46Z trueg $ + * Copyright (C) 2005 Sebastian Trueg <trueg@k3b.org> + * + * This file is part of the K3b project. + * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * See the file "COPYING" for the exact licensing terms. + */ + +#include "k3biso9660backend.h" +#include "k3blibdvdcss.h" + +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#include <qfile.h> + +#include <k3bdevice.h> + + +// +// K3bIso9660DeviceBackend ----------------------------------- +// + +K3bIso9660DeviceBackend::K3bIso9660DeviceBackend( K3bDevice::Device* dev ) + : m_device( dev ), + m_isOpen(false) +{ +} + + +K3bIso9660DeviceBackend::~K3bIso9660DeviceBackend() +{ + close(); +} + + +bool K3bIso9660DeviceBackend::open() +{ + if( m_isOpen ) + return true; + else if( m_device->open() ) { + // set optimal reading speed + m_device->setSpeed( 0xffff, 0xffff ); + m_isOpen = true; + return true; + } + else + return false; +} + + +void K3bIso9660DeviceBackend::close() +{ + if( m_isOpen ) { + m_isOpen = false; + m_device->close(); + } +} + + +int K3bIso9660DeviceBackend::read( unsigned int sector, char* data, int len ) +{ + if( isOpen() ) { + // + // split the number of sectors to be read + // FIXME: use a "real" value, not some arbitrary one + // + static const int maxReadSectors = 20; + int sectorsRead = 0; + int retries = 10; // TODO: no fixed value + while( retries ) { + int read = QMIN(len-sectorsRead, maxReadSectors); + if( !m_device->read10( (unsigned char*)(data+sectorsRead*2048), + read*2048, + sector+sectorsRead, + read ) ) { + retries--; + } + else { + sectorsRead += read; + retries = 10; // new retires for every read part + if( sectorsRead == len ) + return len; + } + } + } + + return -1; +} + + +// +// K3bIso9660FileBackend ----------------------------------- +// + +K3bIso9660FileBackend::K3bIso9660FileBackend( const QString& filename ) + : m_filename( filename ), + m_fd( -1 ), + m_closeFd( true ) +{ +} + + +K3bIso9660FileBackend::K3bIso9660FileBackend( int fd ) + : m_fd( fd ), + m_closeFd( false ) +{ +} + + +K3bIso9660FileBackend::~K3bIso9660FileBackend() +{ + close(); +} + + +#ifndef O_LARGEFILE +#define O_LARGEFILE 0 +#endif + +bool K3bIso9660FileBackend::open() +{ + if( m_fd > 0 ) + return true; + else { + m_fd = ::open( QFile::encodeName( m_filename ), O_RDONLY|O_LARGEFILE ); + return ( m_fd > 0 ); + } +} + + +void K3bIso9660FileBackend::close() +{ + if( m_closeFd && m_fd > 0 ) { + ::close( m_fd ); + m_fd = -1; + } +} + + + +bool K3bIso9660FileBackend::isOpen() const +{ + return ( m_fd > 0 ); +} + + +int K3bIso9660FileBackend::read( unsigned int sector, char* data, int len ) +{ + int read = 0; + if( ::lseek( m_fd, static_cast<unsigned long long>(sector)*2048, SEEK_SET ) != -1 ) + if( (read = ::read( m_fd, data, len*2048 )) != -1 ) + return read / 2048; + + return -1; +} + + + +// +// K3bIso9660LibDvdCssBackend ----------------------------------- +// + +K3bIso9660LibDvdCssBackend::K3bIso9660LibDvdCssBackend( K3bDevice::Device* dev ) + : m_device( dev ), + m_libDvdCss( 0 ) +{ +} + + +K3bIso9660LibDvdCssBackend::~K3bIso9660LibDvdCssBackend() +{ + close(); +} + + +bool K3bIso9660LibDvdCssBackend::open() +{ + if( !m_libDvdCss ) { + // open the libdvdcss stuff + m_libDvdCss = K3bLibDvdCss::create(); + + if( m_libDvdCss ) { + + if( !m_libDvdCss->open( m_device ) || + !m_libDvdCss->crackAllKeys() ) { + kdDebug() << "(K3bIso9660LibDvdCssBackend) Failed to retrieve all CSS keys." << endl; + close(); + } + } + else + kdDebug() << "(K3bIso9660LibDvdCssBackend) failed to open libdvdcss." << endl; + } + + return ( m_libDvdCss != 0 ); +} + + +void K3bIso9660LibDvdCssBackend::close() +{ + delete m_libDvdCss; + m_libDvdCss = 0; +} + + + +bool K3bIso9660LibDvdCssBackend::isOpen() const +{ + return ( m_libDvdCss != 0 ); +} + + +int K3bIso9660LibDvdCssBackend::read( unsigned int sector, char* data, int len ) +{ + int read = -1; + + if( isOpen() ) { + int retries = 10; // TODO: no fixed value + while( retries && !m_libDvdCss->readWrapped( reinterpret_cast<void*>(data), + sector, + len ) ) + retries--; + + if( retries > 0 ) + read = len; + } + + return read; +} + |