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/* dvdisaster: Additional error correction for optical media.
* Copyright (C) 2004-2012 Carsten Gnoerlich.
* Project home page: http://www.dvdisaster.com
* Email: carsten@dvdisaster.com -or- cgnoerlich@fsfe.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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA,
* or direct your browser at http://www.gnu.org.
*/
#ifndef READ_LINEAR_H
#define READ_LINEAR_H
#include "rs02-includes.h"
/*
* Local data package used during reading
*/
#define READ_BUFFERS 128 /* equals 4MB of buffer space */
typedef struct
{ LargeFile *readerImage; /* we need two file handles to prevent LargeSeek() */
LargeFile *writerImage; /* race conditions between the reader and writer */
struct _DeviceHandle *dh;
EccInfo *ei;
GThread *worker;
struct MD5Context md5ctxt; /* Complete image checksum (RS01) */
struct MD5Context dataCtxt; /* Image section checksums (RS02) */
struct MD5Context crcCtxt; /* Image section checksums (RS02) */
struct MD5Context eccCtxt; /* Ecc layer checksum (RS02) */
struct MD5Context metaCtxt; /* Ecc meta checksum (RS02) */
int doMD5sums; /* whether we should calculate the above */
int savedSectorSkip;
CrcBuf *crcBuf; /* CRC sums retrieved from above */
RS02Layout *lay; /* needed for processing RS02 images */
unsigned char *fingerprint; /* needed for missing sector generation */
char *volumeLabel;
/* Data exchange between reader and worker */
struct _AlignedBuffer *alignedBuf[READ_BUFFERS];
gint64 bufferedSector[READ_BUFFERS];
int nSectors[READ_BUFFERS];
int bufState[READ_BUFFERS];
GMutex *mutex;
GCond *canRead, *canWrite;
int readPtr,writePtr;
char *workerError;
/* for usage within the reader */
gint64 sectors; /* medium capacity (total number of sectors) */
gint64 dataSectors; /* crc protected data sectors (RS02) */
gint64 firstSector, lastSector; /* reading range */
gint64 readPos; /* current sector reading position */
Bitmap *readMap; /* map of already read sectors */
gint64 readMarker;
int rereading; /* TRUE if working on existing image */
char *msg;
GTimer *speedTimer,*readTimer;
int unreportedError;
int earlyTermination;
int scanMode;
int lastPercent;
int firstSpeedValue;
double speed,lastSpeed;
gint64 readOK, lastReadOK;
int previousReadErrors;
int previousCRCErrors;
gint64 deadWritten;
gint64 lastErrorsPrinted;
int pass;
int maxC2; /* max C2 error since last output */
/* for drawing the curve and spiral */
gint lastCopied;
gint lastSegment;
gint lastPlotted;
gint lastPlottedY;
gint activeRenderers;
} read_closure;
#endif /* READ_LINEAR_H */
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