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/*
*
* $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;
}
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