/* dvdisaster: Additional error correction for optical media. * Copyright (C) 2004-2009 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 */