(C) Relatively high density file backups on paper. Cross-platform CLI port of Ollydbg's Paperback from Windows and Borland C.
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* =====================================================================================
* Filename: Decoder.h
* Description: Decode paperbak data obtained from bitmap file
* Version: 1.2
* Created: 07/26/2017 05:43:57 AM
* Revision: none
* Compiler: gcc
* Author: Oleh Yuschuk
* Modified By: suhrke@teknik.io
* =====================================================================================
#ifndef DECODER_H
#define DECODER_H
#include <string>
#include "Global.h"
#define M_BEST 0x00000001 // Search for best possible quality
typedef struct t_procdata { // Descriptor of processed data
int step; // Next data processing step (0 - idle)
int mode; // Set of M_xxx
uchar *data; // Pointer to bitmap
int sizex; // X bitmap size, pixels
int sizey; // Y bitmap size, pixels
int gridxmin,gridxmax; // Rought X grid limits, pixels
int gridymin,gridymax; // Rought Y grid limits, pixels
int searchx0,searchx1; // X grid search limits, pixels
int searchy0,searchy1; // Y grid search limits, pixels
int cmean; // Mean grid intensity (0..255)
int cmin,cmax; // Minimal and maximal grid intensity
float sharpfactor; // Estimated sharpness correction factor
float xpeak; // Base X grid line, pixels
float xstep; // X grid step, pixels
float xangle; // X tilt, radians
float ypeak; // Base Y grid line, pixels
float ystep; // Y grid step, pixels
float yangle; // Y tilt, radians
float blockborder; // Relative width of border around block
int bufdx,bufdy; // Dimensions of block buffers, pixels
uchar *buf1,*buf2; // Rotated and sharpened block
int *bufx,*bufy; // Block grid data finders
uchar *unsharp; // Either buf1 or buf2
uchar *sharp; // Either buf1 or buf2
float blockxpeak,blockypeak;// Exact block position in unsharp
float blockxstep,blockystep;// Exact block dimensions in unsharp
int nposx; // Number of blocks to scan in X
int nposy; // Number of blocks to scan in X
int posx,posy; // Next block to scan
t_data uncorrected; // Data before ECC for block display
t_block *blocklist; // List of blocks recognized on page
t_superblock superblock; // Page header
int maxdotsize; // Maximal size of the data dot, pixels
int orientation; // Data orientation (-1: unknown)
int ngood; // Page statistics: good blocks
int nbad; // Page statistics: bad blocks
int nsuper; // Page statistics: good superblocks
int nrestored; // Page statistics: restored bytes
} t_procdata;
extern int orientation; // Orientation of bitmap (-1: unknown)
extern t_procdata procdata; // Descriptor of processed data
void Nextdataprocessingstep(t_procdata *pdata);
void Freeprocdata(t_procdata *pdata);
void Startbitmapdecoding(t_procdata *pdata,uchar *data,int sizex,int sizey);
void Stopbitmapdecoding(t_procdata *pdata);
int Decodeblock(t_procdata *pdata,int posx,int posy,t_data *result);
int Decodebitmap(char *path);
int ProcessDIB(void *hdata,int offset);
#endif //DECODER_H