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unpaper.c
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unpaper.c
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// Copyright © 2005-2007 Jens Gulden
// Copyright © 2011-2011 Diego Elio Pettenò
// SPDX-FileCopyrightText: 2005 The unpaper authors
//
// SPDX-License-Identifier: GPL-2.0-only
/* --- The main program -------------------------------------------------- */
#include <getopt.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <libavutil/avutil.h>
#include "imageprocess.h"
#include "parse.h"
#include "tools.h"
#include "unpaper.h"
#include "version.h"
#define WELCOME \
"unpaper " VERSION_STR \
"\n" \
"License GPLv2: GNU GPL version 2.\n" \
"This is free software: you are free to change and redistribute it.\n" \
"There is NO WARRANTY, to the extent permitted by law.\n"
#define USAGE \
WELCOME "\n" \
"Usage: unpaper [options] <input-file(s)> <output-file(s)>\n" \
"\n" \
"Filenames may contain a formatting placeholder starting with '%%' " \
"to insert a\n" \
"page counter for multi-page processing. E.g.: 'scan%%03d.pbm' to " \
"process files\n" \
"scan001.pbm, scan002.pbm, scan003.pbm etc.\n" \
"\n" \
"See 'man unpaper' for options details\n" \
"Report bugs at https://github.com/unpaper/unpaper/issues\n"
/* --- global variable ---------------------------------------------------- */
VERBOSE_LEVEL verbose = VERBOSE_NONE;
INTERP_FUNCTIONS interpolateType = INTERP_CUBIC;
unsigned int absBlackThreshold;
unsigned int absWhiteThreshold;
unsigned int absBlackfilterScanThreshold;
unsigned int absGrayfilterThreshold;
float deskewScanRangeRad;
float deskewScanStepRad;
float deskewScanDeviationRad;
int layout = LAYOUT_SINGLE;
int startSheet = 1;
int endSheet = -1;
int startInput = -1;
int startOutput = -1;
int inputCount = 1;
int outputCount = 1;
int sheetSize[DIMENSIONS_COUNT] = {-1, -1};
int sheetBackground = WHITE24;
int preRotate = 0;
int postRotate = 0;
int preMirror = 0;
int postMirror = 0;
int preShift[DIRECTIONS_COUNT] = {0, 0};
int postShift[DIRECTIONS_COUNT] = {0, 0};
int size[DIRECTIONS_COUNT] = {-1, -1};
int postSize[DIRECTIONS_COUNT] = {-1, -1};
int stretchSize[DIRECTIONS_COUNT] = {-1, -1};
int postStretchSize[DIRECTIONS_COUNT] = {-1, -1};
float zoomFactor = 1.0;
float postZoomFactor = 1.0;
int pointCount = 0;
int point[MAX_POINTS][COORDINATES_COUNT];
int maskCount = 0;
int mask[MAX_MASKS][EDGES_COUNT];
int wipeCount = 0;
int wipe[MAX_MASKS][EDGES_COUNT];
int middleWipe[2] = {0, 0};
int preWipeCount = 0;
int preWipe[MAX_MASKS][EDGES_COUNT];
int postWipeCount = 0;
int postWipe[MAX_MASKS][EDGES_COUNT];
int preBorder[EDGES_COUNT] = {0, 0, 0, 0};
int postBorder[EDGES_COUNT] = {0, 0, 0, 0};
int border[EDGES_COUNT] = {0, 0, 0, 0};
bool maskValid[MAX_MASKS];
int preMaskCount = 0;
int preMask[MAX_MASKS][EDGES_COUNT];
int blackfilterScanDirections = (1 << HORIZONTAL) | (1 << VERTICAL);
int blackfilterScanSize[DIRECTIONS_COUNT] = {20, 20};
int blackfilterScanDepth[DIRECTIONS_COUNT] = {500, 500};
int blackfilterScanStep[DIRECTIONS_COUNT] = {5, 5};
float blackfilterScanThreshold = 0.95;
int blackfilterExcludeCount = 0;
int blackfilterExclude[MAX_MASKS][EDGES_COUNT];
int blackfilterIntensity = 20;
int noisefilterIntensity = 4;
int blurfilterScanSize[DIRECTIONS_COUNT] = {100, 100};
int blurfilterScanStep[DIRECTIONS_COUNT] = {50, 50};
float blurfilterIntensity = 0.01;
int grayfilterScanSize[DIRECTIONS_COUNT] = {50, 50};
int grayfilterScanStep[DIRECTIONS_COUNT] = {20, 20};
float grayfilterThreshold = 0.5;
int maskScanDirections = (1 << HORIZONTAL);
int maskScanSize[DIRECTIONS_COUNT] = {50, 50};
int maskScanDepth[DIRECTIONS_COUNT] = {-1, -1};
int maskScanStep[DIRECTIONS_COUNT] = {5, 5};
float maskScanThreshold[DIRECTIONS_COUNT] = {0.1, 0.1};
int maskScanMinimum[DIMENSIONS_COUNT] = {100, 100};
int maskScanMaximum[DIMENSIONS_COUNT] = {-1, -1}; // set default later
int maskColor = WHITE24;
int deskewScanEdges = (1 << LEFT) | (1 << RIGHT);
int deskewScanSize = 1500;
float deskewScanDepth = 0.5;
float deskewScanRange = 5.0;
float deskewScanStep = 0.1;
float deskewScanDeviation = 1.0;
int borderScanDirections = (1 << VERTICAL);
int borderScanSize[DIRECTIONS_COUNT] = {5, 5};
int borderScanStep[DIRECTIONS_COUNT] = {5, 5};
int borderScanThreshold[DIRECTIONS_COUNT] = {5, 5};
int borderAlign = 0; // center
int borderAlignMargin[DIRECTIONS_COUNT] = {0, 0}; // center
int outsideBorderscanMask[MAX_PAGES][EDGES_COUNT]; // set by --layout
int outsideBorderscanMaskCount = 0;
float whiteThreshold = 0.9;
float blackThreshold = 0.33;
bool writeoutput = true;
bool multisheets = true;
// 0: allow all, -1: disable all, n: individual entries
struct MultiIndex noBlackfilterMultiIndex = {0, NULL};
struct MultiIndex noNoisefilterMultiIndex = {0, NULL};
struct MultiIndex noBlurfilterMultiIndex = {0, NULL};
struct MultiIndex noGrayfilterMultiIndex = {0, NULL};
struct MultiIndex noMaskScanMultiIndex = {0, NULL};
struct MultiIndex noMaskCenterMultiIndex = {0, NULL};
struct MultiIndex noDeskewMultiIndex = {0, NULL};
struct MultiIndex noWipeMultiIndex = {0, NULL};
struct MultiIndex noBorderMultiIndex = {0, NULL};
struct MultiIndex noBorderScanMultiIndex = {0, NULL};
struct MultiIndex noBorderAlignMultiIndex = {0, NULL};
// default: process all between start-sheet and end-sheet
struct MultiIndex sheetMultiIndex = {-1, NULL};
struct MultiIndex excludeMultiIndex = {0, NULL};
struct MultiIndex ignoreMultiIndex = {0, NULL};
struct MultiIndex insertBlank = {0, NULL};
struct MultiIndex replaceBlank = {0, NULL};
bool overwrite = false;
int dpi = 300;
/**
* Print an error and exit process
*/
void errOutput(const char *fmt, ...) {
va_list vl;
fprintf(stderr, "unpaper: error: ");
va_start(vl, fmt);
vfprintf(stderr, fmt, vl);
va_end(vl);
fprintf(stderr, "\nTry 'man unpaper' for more information.\n");
exit(1);
}
/****************************************************************************
* MAIN() *
****************************************************************************/
/**
* The main program.
*/
int main(int argc, char *argv[]) {
// --- local variables ---
int w = -1;
int h = -1;
int left;
int top;
int right;
int bottom;
int previousWidth = -1;
int previousHeight = -1;
AVFrame *sheet = NULL;
AVFrame *page = NULL;
int inputNr;
int outputNr;
int option_index = 0;
int outputPixFmt = -1;
// -------------------------------------------------------------------
// --- parse parameters ---
// -------------------------------------------------------------------
while (true) {
int c;
static const struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"?", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
{"layout", required_argument, NULL, 'l'},
{"#", required_argument, NULL, '#'},
{"sheet", required_argument, NULL, '#'},
{"start", required_argument, NULL, 0x7e},
{"start-sheet", required_argument, NULL, 0x7e},
{"end", required_argument, NULL, 0x7f},
{"end-sheet", required_argument, NULL, 0x7f},
{"start-input", required_argument, NULL, 0x80},
{"si", required_argument, NULL, 0x80},
{"start-output", required_argument, NULL, 0x81},
{"so", required_argument, NULL, 0x81},
{"sheet-size", required_argument, NULL, 'S'},
{"sheet-background", required_argument, NULL, 0x82},
{"exclude", optional_argument, NULL, 'x'},
{"no-processing", required_argument, NULL, 'n'},
{"pre-rotate", required_argument, NULL, 0x83},
{"post-rotate", required_argument, NULL, 0x84},
{"pre-mirror", required_argument, NULL, 'M'},
{"post-mirror", required_argument, NULL, 0x85},
{"pre-shift", required_argument, NULL, 0x86},
{"post-shift", required_argument, NULL, 0x87},
{"pre-mask", required_argument, NULL, 0x88},
{"size", required_argument, NULL, 's'},
{"post-size", required_argument, NULL, 0x89},
{"stretch", required_argument, NULL, 0x8a},
{"post-stretch", required_argument, NULL, 0x8b},
{"zoom", required_argument, NULL, 'z'},
{"post-zoom", required_argument, NULL, 0x8c},
{"mask-scan-point", required_argument, NULL, 'p'},
{"mask", required_argument, NULL, 'm'},
{"wipe", required_argument, NULL, 'W'},
{"pre-wipe", required_argument, NULL, 0x8d},
{"post-wipe", required_argument, NULL, 0x8e},
{"middle-wipe", required_argument, NULL, 0x8f},
{"mw", required_argument, NULL, 0x8f},
{"border", required_argument, NULL, 'B'},
{"pre-border", required_argument, NULL, 0x90},
{"post-border", required_argument, NULL, 0x91},
{"no-blackfilter", optional_argument, NULL, 0x92},
{"blackfilter-scan-direction", required_argument, NULL, 0x93},
{"bn", required_argument, NULL, 0x93},
{"blackfilter-scan-size", required_argument, NULL, 0x94},
{"bs", required_argument, NULL, 0x94},
{"blackfilter-scan-depth", required_argument, NULL, 0x95},
{"bd", required_argument, NULL, 0x95},
{"blackfilter-scan-step", required_argument, NULL, 0x96},
{"bp", required_argument, NULL, 0x96},
{"blackfilter-scan-threshold", required_argument, NULL, 0x97},
{"bt", required_argument, NULL, 0x97},
{"blackfilter-scan-exclude", required_argument, NULL, 0x98},
{"bx", required_argument, NULL, 0x98},
{"blackfilter-intensity", required_argument, NULL, 0x99},
{"bi", required_argument, NULL, 0x99},
{"no-noisefilter", optional_argument, NULL, 0x9a},
{"noisefilter-intensity", required_argument, NULL, 0x9b},
{"ni", required_argument, NULL, 0x9b},
{"no-blurfilter", optional_argument, NULL, 0x9c},
{"blurfilter-size", required_argument, NULL, 0x9d},
{"ls", required_argument, NULL, 0x9d},
{"blurfilter-step", required_argument, NULL, 0x9e},
{"lp", required_argument, NULL, 0x9e},
{"blurfilter-intensity", required_argument, NULL, 0x9f},
{"li", required_argument, NULL, 0x9f},
{"no-grayfilter", optional_argument, NULL, 0xa0},
{"grayfilter-size", required_argument, NULL, 0xa1},
{"gs", required_argument, NULL, 0xa1},
{"grayfilter-step", required_argument, NULL, 0xa2},
{"gp", required_argument, NULL, 0xa2},
{"grayfilter-threshold", required_argument, NULL, 0xa3},
{"gt", required_argument, NULL, 0xa3},
{"no-mask-scan", optional_argument, NULL, 0xa4},
{"mask-scan-direction", required_argument, NULL, 0xa5},
{"mn", required_argument, NULL, 0xa5},
{"mask-scan-size", required_argument, NULL, 0xa6},
{"ms", required_argument, NULL, 0xa6},
{"mask-scan-depth", required_argument, NULL, 0xa7},
{"md", required_argument, NULL, 0xa7},
{"mask-scan-step", required_argument, NULL, 0xa8},
{"mp", required_argument, NULL, 0xa8},
{"mask-scan-threshold", required_argument, NULL, 0xa9},
{"mt", required_argument, NULL, 0xa9},
{"mask-scan-minimum", required_argument, NULL, 0xaa},
{"mm", required_argument, NULL, 0xaa},
{"mask-scan-maximum", required_argument, NULL, 0xab},
{"mM", required_argument, NULL, 0xab},
{"mask-color", required_argument, NULL, 0xac},
{"mc", required_argument, NULL, 0xac},
{"no-mask-center", optional_argument, NULL, 0xad},
{"no-deskew", optional_argument, NULL, 0xae},
{"deskew-scan-direction", required_argument, NULL, 0xaf},
{"dn", required_argument, NULL, 0xaf},
{"deskew-scan-size", required_argument, NULL, 0xb0},
{"ds", required_argument, NULL, 0xb0},
{"deskew-scan-depth", required_argument, NULL, 0xb1},
{"dd", required_argument, NULL, 0xb1},
{"deskew-scan-range", required_argument, NULL, 0xb2},
{"dr", required_argument, NULL, 0xb2},
{"deskew-scan-step", required_argument, NULL, 0xb3},
{"dp", required_argument, NULL, 0xb3},
{"deskew-scan-deviation", required_argument, NULL, 0xb4},
{"dv", required_argument, NULL, 0xb4},
{"no-border-scan", optional_argument, NULL, 0xb5},
{"border-scan-direction", required_argument, NULL, 0xb6},
{"Bn", required_argument, NULL, 0xb6},
{"border-scan-size", required_argument, NULL, 0xb7},
{"Bs", required_argument, NULL, 0xb7},
{"border-scan-step", required_argument, NULL, 0xb8},
{"Bp", required_argument, NULL, 0xb8},
{"border-scan-threshold", required_argument, NULL, 0xb9},
{"Bt", required_argument, NULL, 0xb9},
{"border-align", required_argument, NULL, 0xba},
{"Ba", required_argument, NULL, 0xba},
{"border-margin", required_argument, NULL, 0xbb},
{"Bm", required_argument, NULL, 0xbb},
{"no-border-align", optional_argument, NULL, 0xbc},
{"no-wipe", optional_argument, NULL, 0xbd},
{"no-border", optional_argument, NULL, 0xbe},
{"white-threshold", required_argument, NULL, 'w'},
{"black-threshold", required_argument, NULL, 'b'},
{"input-pages", required_argument, NULL, 0xbf},
{"ip", required_argument, NULL, 0xbf},
{"output-pages", required_argument, NULL, 0xc0},
{"op", required_argument, NULL, 0xc0},
{"input-file-sequence", required_argument, NULL, 0xc1},
{"if", required_argument, NULL, 0xc1},
{"output-file-sequence", required_argument, NULL, 0xc2},
{"of", required_argument, NULL, 0xc2},
{"insert-blank", required_argument, NULL, 0xc3},
{"replace-blank", required_argument, NULL, 0xc4},
{"test-only", no_argument, NULL, 'T'},
{"no-multi-pages", no_argument, NULL, 0xc6},
{"dpi", required_argument, NULL, 0xc7},
{"type", required_argument, NULL, 't'},
{"quiet", no_argument, NULL, 'q'},
{"overwrite", no_argument, NULL, 0xc8},
{"verbose", no_argument, NULL, 'v'},
{"vv", no_argument, NULL, 0xca},
{"debug", no_argument, NULL, 0xcb},
{"vvv", no_argument, NULL, 0xcb},
{"debug-save", no_argument, NULL, 0xcc},
{"vvvv", no_argument, NULL, 0xcc},
{"interpolate", required_argument, NULL, 0xcd},
{NULL, no_argument, NULL, 0}};
c = getopt_long_only(argc, argv, "hVl:S:x::n::M:s:z:p:m:W:B:w:b:Tt:qv",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'h':
case '?':
puts(USAGE);
return c == '?' ? 1 : 0;
case 'V':
puts(VERSION_STR);
return 0;
case 'l':
if (strcmp(optarg, "single") == 0) {
layout = LAYOUT_SINGLE;
} else if (strcmp(optarg, "double") == 0) {
layout = LAYOUT_DOUBLE;
} else if (strcmp(optarg, "none") == 0) {
layout = LAYOUT_NONE;
} else {
errOutput("unknown layout mode '%s'.", optarg);
}
break;
case '#':
parseMultiIndex(optarg, &sheetMultiIndex);
// allow 0 as start sheet, might be overwritten by --start-sheet again
if (sheetMultiIndex.count > 0 && startSheet > sheetMultiIndex.indexes[0])
startSheet = sheetMultiIndex.indexes[0];
break;
case 0x7e:
sscanf(optarg, "%d", &startSheet);
break;
case 0x7f:
sscanf(optarg, "%d", &endSheet);
break;
case 0x80:
sscanf(optarg, "%d", &startInput);
break;
case 0x81:
sscanf(optarg, "%d", &startOutput);
break;
case 'S':
parseSize(optarg, sheetSize, dpi);
break;
case 0x82:
sheetBackground = parseColor(optarg);
break;
case 'x':
parseMultiIndex(optarg, &excludeMultiIndex);
if (excludeMultiIndex.count == -1)
excludeMultiIndex.count = 0; // 'exclude all' makes no sense
break;
case 'n':
parseMultiIndex(optarg, &ignoreMultiIndex);
break;
case 0x83:
sscanf(optarg, "%d", &preRotate);
if ((preRotate != 0) && (abs(preRotate) != 90)) {
fprintf(
stderr,
"cannot set --pre-rotate value other than -90 or 90, ignoring.\n");
preRotate = 0;
}
break;
case 0x84:
sscanf(optarg, "%d", &postRotate);
if ((postRotate != 0) && (abs(postRotate) != 90)) {
fprintf(
stderr,
"cannot set --post-rotate value other than -90 or 90, ignoring.\n");
postRotate = 0;
}
break;
case 'M':
preMirror =
parseDirections(optarg); // s = "v", "v,h", "vertical,horizontal", ...
break;
case 0x85:
postMirror = parseDirections(optarg);
break;
case 0x86:
parseSize(optarg, preShift, dpi);
break;
case 0x87:
parseSize(optarg, postShift, dpi);
break;
case 0x88:
if (preMaskCount < MAX_MASKS) {
left = -1;
top = -1;
right = -1;
bottom = -1;
sscanf(optarg, "%d,%d,%d,%d", &left, &top, &right,
&bottom); // x1, y1, x2, y2
preMask[preMaskCount][LEFT] = left;
preMask[preMaskCount][TOP] = top;
preMask[preMaskCount][RIGHT] = right;
preMask[preMaskCount][BOTTOM] = bottom;
preMaskCount++;
} else {
fprintf(stderr,
"maximum number of masks (%d) exceeded, ignoring mask %s\n",
MAX_MASKS, optarg);
}
break;
case 's':
parseSize(optarg, size, dpi);
break;
case 0x89:
parseSize(optarg, postSize, dpi);
break;
case 0x8a:
parseSize(optarg, stretchSize, dpi);
break;
case 0x8b:
parseSize(optarg, postStretchSize, dpi);
break;
case 'z':
sscanf(optarg, "%f", &zoomFactor);
break;
case 0x8c:
sscanf(optarg, "%f", &postZoomFactor);
break;
case 'p':
if (pointCount < MAX_POINTS) {
int x = -1;
int y = -1;
sscanf(optarg, "%d,%d", &x, &y);
point[pointCount][X] = x;
point[pointCount][Y] = y;
pointCount++;
} else {
fprintf(stderr,
"maximum number of scan points (%d) exceeded, ignoring scan "
"point %s\n",
MAX_POINTS, optarg);
}
break;
case 'm':
if (maskCount < MAX_MASKS) {
left = -1;
top = -1;
right = -1;
bottom = -1;
sscanf(optarg, "%d,%d,%d,%d", &left, &top, &right,
&bottom); // x1, y1, x2, y2
mask[maskCount][LEFT] = left;
mask[maskCount][TOP] = top;
mask[maskCount][RIGHT] = right;
mask[maskCount][BOTTOM] = bottom;
maskValid[maskCount] = true;
maskCount++;
} else {
fprintf(stderr,
"maximum number of masks (%d) exceeded, ignoring mask %s\n",
MAX_MASKS, optarg);
}
break;
case 'W':
if (wipeCount < MAX_MASKS) {
left = -1;
top = -1;
right = -1;
bottom = -1;
sscanf(optarg, "%d,%d,%d,%d", &left, &top, &right,
&bottom); // x1, y1, x2, y2
wipe[wipeCount][LEFT] = left;
wipe[wipeCount][TOP] = top;
wipe[wipeCount][RIGHT] = right;
wipe[wipeCount][BOTTOM] = bottom;
wipeCount++;
} else {
fprintf(stderr,
"maximum number of wipes (%d) exceeded, ignoring mask %s\n",
MAX_MASKS, optarg);
}
break;
case 0x8d:
if (preWipeCount < MAX_MASKS) {
left = -1;
top = -1;
right = -1;
bottom = -1;
sscanf(optarg, "%d,%d,%d,%d", &left, &top, &right,
&bottom); // x1, y1, x2, y2
preWipe[preWipeCount][LEFT] = left;
preWipe[preWipeCount][TOP] = top;
preWipe[preWipeCount][RIGHT] = right;
preWipe[preWipeCount][BOTTOM] = bottom;
preWipeCount++;
} else {
fprintf(stderr,
"maximum number of pre-wipes (%d) exceeded, ignoring mask %s\n",
MAX_MASKS, optarg);
}
break;
case 0x8e:
if (postWipeCount < MAX_MASKS) {
left = -1;
top = -1;
right = -1;
bottom = -1;
sscanf(optarg, "%d,%d,%d,%d", &left, &top, &right,
&bottom); // x1, y1, x2, y2
postWipe[postWipeCount][LEFT] = left;
postWipe[postWipeCount][TOP] = top;
postWipe[postWipeCount][RIGHT] = right;
postWipe[postWipeCount][BOTTOM] = bottom;
postWipeCount++;
} else {
fprintf(
stderr,
"maximum number of post-wipes (%d) exceeded, ignoring mask %s\n",
MAX_MASKS, optarg);
}
break;
case 0x8f:
parseInts(optarg, middleWipe);
break;
case 'B':
sscanf(optarg, "%d,%d,%d,%d", &border[LEFT], &border[TOP], &border[RIGHT],
&border[BOTTOM]);
break;
case 0x90:
sscanf(optarg, "%d,%d,%d,%d", &preBorder[LEFT], &preBorder[TOP],
&preBorder[RIGHT], &preBorder[BOTTOM]);
break;
case 0x91:
sscanf(optarg, "%d,%d,%d,%d", &postBorder[LEFT], &postBorder[TOP],
&postBorder[RIGHT], &postBorder[BOTTOM]);
break;
case 0x92:
parseMultiIndex(optarg, &noBlackfilterMultiIndex);
break;
case 0x93:
blackfilterScanDirections = parseDirections(optarg);
break;
case 0x94:
parseInts(optarg, blackfilterScanSize);
break;
case 0x95:
parseInts(optarg, blackfilterScanDepth);
break;
case 0x96:
parseInts(optarg, blackfilterScanStep);
break;
case 0x97:
sscanf(optarg, "%f", &blackfilterScanThreshold);
break;
case 0x98:
if (blackfilterExcludeCount < MAX_MASKS) {
left = -1;
top = -1;
right = -1;
bottom = -1;
sscanf(optarg, "%d,%d,%d,%d", &left, &top, &right,
&bottom); // x1, y1, x2, y2
blackfilterExclude[blackfilterExcludeCount][LEFT] = left;
blackfilterExclude[blackfilterExcludeCount][TOP] = top;
blackfilterExclude[blackfilterExcludeCount][RIGHT] = right;
blackfilterExclude[blackfilterExcludeCount][BOTTOM] = bottom;
blackfilterExcludeCount++;
} else {
fprintf(stderr,
"maximum number of blackfilter exclusion (%d) exceeded, "
"ignoring mask %s\n",
MAX_MASKS, optarg);
}
break;
case 0x99:
sscanf(optarg, "%d", &blackfilterIntensity);
break;
case 0x9a:
parseMultiIndex(optarg, &noNoisefilterMultiIndex);
break;
case 0x9b:
sscanf(optarg, "%d", &noisefilterIntensity);
break;
case 0x9c:
parseMultiIndex(optarg, &noBlurfilterMultiIndex);
break;
case 0x9d:
parseInts(optarg, blurfilterScanSize);
break;
case 0x9e:
parseInts(optarg, blurfilterScanStep);
break;
case 0x9f:
sscanf(optarg, "%f", &blurfilterIntensity);
break;
case 0xa0:
parseMultiIndex(optarg, &noGrayfilterMultiIndex);
break;
case 0xa1:
parseInts(optarg, grayfilterScanSize);
break;
case 0xa2:
parseInts(optarg, grayfilterScanStep);
break;
case 0xa3:
sscanf(optarg, "%f", &grayfilterThreshold);
break;
case 0xa4:
parseMultiIndex(optarg, &noMaskScanMultiIndex);
break;
case 0xa5:
maskScanDirections = parseDirections(optarg);
break;
case 0xa6:
parseInts(optarg, maskScanSize);
break;
case 0xa7:
parseInts(optarg, maskScanDepth);
break;
case 0xa8:
parseInts(optarg, maskScanStep);
break;
case 0xa9:
parseFloats(optarg, maskScanThreshold);
break;
case 0xaa:
sscanf(optarg, "%d,%d", &maskScanMinimum[WIDTH],
&maskScanMinimum[HEIGHT]);
break;
case 0xab:
sscanf(optarg, "%d,%d", &maskScanMaximum[WIDTH],
&maskScanMaximum[HEIGHT]);
break;
case 0xac:
sscanf(optarg, "%d", &maskColor);
break;
case 0xad:
parseMultiIndex(optarg, &noMaskCenterMultiIndex);
break;
case 0xae:
parseMultiIndex(optarg, &noDeskewMultiIndex);
break;
case 0xaf:
deskewScanEdges = parseEdges(optarg);
break;
case 0xb0:
sscanf(optarg, "%d", &deskewScanSize);
break;
case 0xb1:
sscanf(optarg, "%f", &deskewScanDepth);
break;
case 0xb2:
sscanf(optarg, "%f", &deskewScanRange);
break;
case 0xb3:
sscanf(optarg, "%f", &deskewScanStep);
break;
case 0xb4:
sscanf(optarg, "%f", &deskewScanDeviation);
break;
case 0xb5:
parseMultiIndex(optarg, &noBorderScanMultiIndex);
break;
case 0xb6:
borderScanDirections = parseDirections(optarg);
break;
case 0xb7:
parseInts(optarg, borderScanSize);
break;
case 0xb8:
parseInts(optarg, borderScanStep);
break;
case 0xb9:
parseInts(optarg, borderScanThreshold);
break;
case 0xba:
borderAlign = parseEdges(optarg);
break;
case 0xbb:
parseSize(optarg, borderAlignMargin, dpi);
break;
case 0xbc:
parseMultiIndex(optarg, &noBorderAlignMultiIndex);
break;
case 0xbd:
parseMultiIndex(optarg, &noWipeMultiIndex);
break;
case 0xbe:
parseMultiIndex(optarg, &noBorderMultiIndex);
break;
case 'w':
sscanf(optarg, "%f", &whiteThreshold);
break;
case 'b':
sscanf(optarg, "%f", &blackThreshold);
break;
case 0xbf:
sscanf(optarg, "%d", &inputCount);
if (!(inputCount >= 1 && inputCount <= 2)) {
fprintf(
stderr,
"cannot set --input-pages value other than 1 or 2, ignoring.\n");
inputCount = 1;
}
break;
case 0xc0:
sscanf(optarg, "%d", &outputCount);
if (!(outputCount >= 1 && outputCount <= 2)) {
fprintf(
stderr,
"cannot set --output-pages value other than 1 or 2, ignoring.\n");
outputCount = 1;
}
break;
case 0xc1:
case 0xc2:
errOutput(
"--input-file-sequence and --output-file sequence are deprecated and "
"unimplemented.\n"
"Please pass input output pairs as arguments to unpaper instead.");
break;
case 0xc3:
parseMultiIndex(optarg, &insertBlank);
break;
case 0xc4:
parseMultiIndex(optarg, &replaceBlank);
break;
case 'T':
writeoutput = false;
break;
case 0xc5:
// Deprecated function, ignore.
break;
case 0xc6:
multisheets = false;
break;
case 0xc7:
sscanf(optarg, "%d", &dpi);
break;
case 't':
if (strcmp(optarg, "pbm") == 0) {
outputPixFmt = AV_PIX_FMT_MONOWHITE;
} else if (strcmp(optarg, "pgm") == 0) {
outputPixFmt = AV_PIX_FMT_GRAY8;
} else if (strcmp(optarg, "ppm") == 0) {
outputPixFmt = AV_PIX_FMT_RGB24;
}
break;
case 'q':
verbose = VERBOSE_QUIET;
break;
case 0xc8:
overwrite = true;
break;
case 'v':
verbose = VERBOSE_NORMAL;
break;
case 0xca:
verbose = VERBOSE_MORE;
break;
case 0xcb:
verbose = VERBOSE_DEBUG;
break;
case 0xcc:
verbose = VERBOSE_DEBUG_SAVE;
break;
case 0xcd:
if (strcmp(optarg, "nearest") == 0) {
interpolateType = INTERP_NN;
} else if (strcmp(optarg, "linear") == 0) {
interpolateType = INTERP_LINEAR;
} else if (strcmp(optarg, "cubic") == 0) {
interpolateType = INTERP_CUBIC;
} else {
fprintf(stderr,
"Could not parse --interpolate, using cubic as default.\n");
interpolateType = INTERP_CUBIC;
}
break;
}
}
/* make sure we have at least two arguments after the options, as
that's the minimum amount of parameters we need (one input and
one output, or a wildcard of inputs and a wildcard of
outputs.
*/
if (optind + 2 > argc)
errOutput("no input or output files given.\n");
if (verbose >= VERBOSE_NORMAL)
printf(WELCOME); // welcome message
if (startInput == -1)
startInput = (startSheet - 1) * inputCount + 1;
if (startOutput == -1)
startOutput = (startSheet - 1) * outputCount + 1;
inputNr = startInput;
outputNr = startOutput;
if (!multisheets && endSheet == -1)
endSheet = startSheet;
// Calculate the constant absolute values based on the relative parameters.
absBlackThreshold = WHITE * (1.0 - blackThreshold);
absWhiteThreshold = WHITE * (whiteThreshold);
absBlackfilterScanThreshold = WHITE * (blackfilterScanThreshold);
absGrayfilterThreshold = WHITE * (grayfilterThreshold);
deskewScanRangeRad = degreesToRadians(deskewScanRange);
deskewScanStepRad = degreesToRadians(deskewScanStep);
deskewScanDeviationRad = degreesToRadians(deskewScanDeviation);
for (int nr = startSheet; (endSheet == -1) || (nr <= endSheet); nr++) {
char inputFilesBuffer[2][255];
char outputFilesBuffer[2][255];
char *inputFileNames[2];
char *outputFileNames[2];
// -------------------------------------------------------------------
// --- begin processing ---
// -------------------------------------------------------------------
bool inputWildcard = multisheets && (strchr(argv[optind], '%') != NULL);
for (int i = 0; i < inputCount; i++) {
bool ins = isInMultiIndex(inputNr, insertBlank);
bool repl = isInMultiIndex(inputNr, replaceBlank);
if (repl) {
inputFileNames[i] = NULL;
inputNr++; /* replace */
} else if (ins) {
inputFileNames[i] = NULL; /* insert */
} else if (inputWildcard) {
sprintf(inputFilesBuffer[i], argv[optind], inputNr++);
inputFileNames[i] = inputFilesBuffer[i];
} else if (optind >= argc) {
if (endSheet == -1) {
endSheet = nr - 1;
goto sheet_end;
} else {
errOutput("not enough input files given.");
}
} else {
inputFileNames[i] = argv[optind++];
}