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169 lines
3.9 KiB
Plaintext
169 lines
3.9 KiB
Plaintext
/* OCR Aug00 JS
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// PGM gray ASCII=P2 RAW=P5
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// PPM RGB ASCII=P3 RAW=P6
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// PBM B/W ASCII=P1 RAW=P4
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// ToDo:
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// - pbm-raw to pgm also for x!=0 (mod 8)
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// v0.01 bug eliminated
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// v0.02 convert renamed into jconv because ImageMagick uses same name
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// v0.03 code review bbg
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// program is not used anymore, use "convert -verbose -crop 0x0+1+1" instead
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*/
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// #include <iostream.h>
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <string.h>
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#include "pnm.h"
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#ifdef HAVE_PAM_H
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# include <pam.h>
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#endif
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#include "pcx.h"
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#include "tga.h"
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void help( void ) {
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printf("jconv version Aug2000 JS (pnm-raw,pcx8,tga24)\n"
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"use: jconv [options] ?infile.pnm? ?outfile.pgm? ?ox? ?oy? ?dx? ?dy?\n"
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"options: -shrink -pbm -? -help\n"
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"example: jconv -shrink -pbm font.pbm font.pbm 0 0 0 0\n");
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exit(1);
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}
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int main(int argn, char *argv[])
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{
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char *inam, *onam;
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pix bild;
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int ox, oy, dx, dy, x, y, i, vvv = 0;
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#ifdef HAVE_PAM_H
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pnm_init(&argn, argv);
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#endif
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// skip options
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for (i = 1; i < argn; i++) {
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if (argv[i][0] != '-')
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break;
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if (!strcmp(argv[i], "-?"))
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help();
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else if (!strcmp(argv[i], "-help"))
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help();
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else if (!strcmp(argv[i], "-shrink"))
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vvv |= 2;
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else if (!strcmp(argv[i], "-pbm"))
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vvv |= 4;
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else
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printf("unknown option: %s\n", argv[i]);
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}
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if (argn - i != 6)
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help();
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inam = argv[i++];
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onam = argv[i++];
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ox = atoi(argv[i++]);
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oy = atoi(argv[i++]);
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dx = atoi(argv[i++]);
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dy = atoi(argv[i++]);
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printf("# in=%s out=%s offs=%d,%d len=%d,%d vvv=%d\n",
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inam, onam, ox, oy, dx, dy, vvv);
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// ----- read picture
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if (strstr(inam, ".pbm") ||
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strstr(inam, ".pgm") ||
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strstr(inam, ".ppm") ||
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strstr(inam, ".pnm") ||
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strstr(inam, ".pam"))
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readpgm(inam, &bild, 1);
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else if (strstr(inam, ".pcx"))
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readpcx(inam, &bild, 1);
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else if (strstr(inam, ".tga"))
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readtga(inam, &bild, ((vvv > 1) ? 0 : 1));
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else {
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printf("Error: unknown suffix\n");
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exit(1);
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}
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if (ox < 0 || ox >= bild.x)
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ox = 0;
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if (oy < 0 || ox >= bild.y)
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oy = 0;
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if (dx <= 0 || ox + dx > bild.x)
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dx = bild.x - ox;
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if (dy <= 0 || oy + dy > bild.y)
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dy = bild.y - oy;
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if ((vvv & 2) == 2 && bild.bpp == 1) { // -shrink
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int x, y;
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printf("# shrinking PGM: offs=%d,%d len=%d,%d\n", ox, oy, dx, dy);
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for (y = 0; y < dy; y++) { // shrink upper border
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for (x = 0; x < dx; x++)
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if (bild.p[x + ox + (y + oy) * bild.x] < 127)
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break;
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if (x < dx) {
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if (y > 0)
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y--;
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oy += y;
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dy -= y;
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break;
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}
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}
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for (y = 0; y < dy; y++) { // shrink lower border
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for (x = 0; x < dx; x++)
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if (bild.p[ox + x + (oy + dy - y - 1) * bild.x] < 127)
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break;
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if (x < dx) {
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if (y > 0)
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y--;
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dy -= y;
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break;
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}
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}
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for (x = 0; x < dx; x++) { // shrink left border
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for (y = 0; y < dy; y++)
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if (bild.p[x + ox + (y + oy) * bild.x] < 127)
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break;
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if (y < dy) {
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if (x > 0)
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x--;
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ox += x;
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dx -= x;
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break;
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}
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}
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for (x = 0; x < dx; x++) { // shrink right border
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for (y = 0; y < dy; y++)
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if (bild.p[ox + dx - x - 1 + (oy + y) * bild.x] < 127)
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break;
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if (y < dy) {
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if (x > 0)
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x--;
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dx -= x;
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break;
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}
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}
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}
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printf("# final dimension: offs=%d,%d len=%d,%d bpp=%d\n",
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ox, oy, dx, dy, bild.bpp);
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/* bbg: could be changed to memmoves */
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// ---- new size
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for (y = 0; y < dy; y++)
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for (x = 0; x < dx; x++)
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for (i = 0; i < 3; i++)
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bild.p[i + bild.bpp * (x + dx * y)] =
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bild.p[i + bild.bpp * (x + ox + (y + oy) * bild.x)];
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bild.x = dx;
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bild.y = dy;
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// ---- write internal picture of textsite
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printf("# write %s\n", onam);
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if (strstr(onam, ".pbm"))
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writepbm(onam, &bild);
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else if (strstr(onam, ".pgm"))
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writepgm(onam, &bild);
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else if (strstr(onam, ".ppm"))
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writeppm(onam, &bild);
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else if (strstr(onam, ".pnm"))
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writepgm(onam, &bild);
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else
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printf("Error: unknown suffix");
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free( bild.p );
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}
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