98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
/* dvdisaster: Additional error correction for optical media.
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* Copyright (C) 2004-2017 Carsten Gnoerlich.
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*
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* Email: carsten@dvdisaster.org -or- cgnoerlich@fsfe.org
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* Project homepage: http://www.dvdisaster.org
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*
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* This file is part of dvdisaster.
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*
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* dvdisaster 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 3 of the License, or
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* (at your option) any later version.
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*
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* dvdisaster is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with dvdisaster. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef READ_LINEAR_H
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#define READ_LINEAR_H
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/*
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* Local data package used during reading
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*/
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#define READ_BUFFERS 128 /* equals 4MB of buffer space */
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typedef struct
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{ LargeFile *readerImage; /* we need two file handles to prevent LargeSeek() */
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LargeFile *writerImage; /* race conditions between the reader and writer */
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Image *image;
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Method *eccMethod; /* Ecc method selected for this image */
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EccHeader *eccHeader; /* accompanying Ecc header */
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GThread *worker;
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struct MD5Context md5ctxt; /* Complete image checksum (RS01) */
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struct MD5Context dataCtxt; /* Image section checksums (RS02) */
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struct MD5Context crcCtxt; /* Image section checksums (RS02) */
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struct MD5Context eccCtxt; /* Ecc layer checksum (RS02) */
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struct MD5Context metaCtxt; /* Ecc meta checksum (RS02) */
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int doChecksumsFromImage; /* calculate sector CRC and MD5 from image */
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int doChecksumsFromCodec; /* let codec compute its own/additional checksums */
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int savedSectorSkip;
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char *volumeLabel;
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/* Data exchange between reader and worker */
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struct _AlignedBuffer *alignedBuf[READ_BUFFERS];
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gint64 bufferedSector[READ_BUFFERS];
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int nSectors[READ_BUFFERS];
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int bufState[READ_BUFFERS];
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GMutex *mutex;
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GCond *canRead, *canWrite;
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int readPtr,writePtr;
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char *workerError;
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/* for usage within the reader */
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gint64 firstSector, lastSector; /* reading range */
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gint64 readPos; /* current sector reading position */
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Bitmap *readMap; /* map of already read sectors */
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gint64 readMarker;
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int rereading; /* TRUE if working on existing image */
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char *msg;
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GTimer *speedTimer,*readTimer;
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int unreportedError;
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int earlyTermination;
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int scanMode;
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int lastPercent;
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int firstSpeedValue;
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double speed,lastSpeed;
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gint64 readOK, lastReadOK;
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int previousReadErrors;
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int previousCRCErrors;
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gint64 deadWritten;
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gint64 lastErrorsPrinted;
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int pass;
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int maxC2; /* max C2 error since last output */
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int crcIncomplete; /* CRC information was found incomplete (RS03 only) */
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/* for drawing the curve and spiral */
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gint lastCopied;
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gint lastSegment;
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gint lastPlotted;
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gint lastPlottedY;
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gint activeRenderers;
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GMutex *rendererMutex;
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} read_closure;
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#endif /* READ_LINEAR_H */
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