third-party/leptonica/prog/maketile.c
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
/*
* maketile.c
*
* Generates a single image tiling of all images of a specific depth
* in a directory. The tiled images are scaled by a specified
* isotropic scale factor. One can also specify the approximate width
* of the output image file, and the background color that is between
* the tiled images.
*
* Input: dirin: directory that has image files
* depth (use 32 for RGB)
* scale factor
* width (approx. width of output tiled image)
* background (0 for white, 1 for black)
* fileout: output tiled image file
*
* Note: this program is Unix only; it will not compile under cygwin.
*/
#include <string.h>
#include "allheaders.h"
int main(int argc,
char **argv)
{
char *dirin, *fileout, *fname, *fullname;
l_int32 depth, width, background, i, nfiles;
l_float32 scale;
SARRAY *safiles;
PIX *pix, *pixt, *pixd;
PIXA *pixa;
static char mainName[] = "maketile";
if (argc != 7)
return ERROR_INT(
"Syntax: maketile dirin depth scale width background fileout",
mainName, 1);
dirin = argv[1];
depth = atoi(argv[2]);
scale = atof(argv[3]);
width = atoi(argv[4]);
background = atoi(argv[5]);
fileout = argv[6];
/* capture the filenames in the input directory; ignore directories */
if ((safiles = getFilenamesInDirectory(dirin)) == NULL)
return ERROR_INT("safiles not made", mainName, 1);
/* capture images with the requisite depth */
nfiles = sarrayGetCount(safiles);
pixa = pixaCreate(nfiles);
for (i = 0; i < nfiles; i++) {
fname = sarrayGetString(safiles, i, 0);
fullname = genPathname(dirin, fname);
pix = pixRead(fullname);
lept_free(fullname);
if (!pix)
continue;
if (pixGetDepth(pix) != depth) {
pixDestroy(&pix);
continue;
}
if (pixGetHeight(pix) > 5000) {
fprintf(stderr, "%s too tall\n", fname);
continue;
}
pixt = pixScale(pix, scale, scale);
pixaAddPix(pixa, pixt, L_INSERT);
pixDestroy(&pix);
/* fprintf(stderr, "%d..", i); */
}
fprintf(stderr, "\n");
/* tile them */
pixd = pixaDisplayTiled(pixa, width, background, 15);
if (depth < 8)
pixWrite(fileout, pixd, IFF_PNG);
else
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixaDestroy(&pixa);
pixDestroy(&pixd);
sarrayDestroy(&safiles);
return 0;
}