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/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* scaleandtile.c
*
* Generates a single image tiling of all images in a directory
* whose filename contains a given substring. The filenames
* are filtered and sorted, and read into a pixa, which is
* then tiled into a pix at a specified depth, and finally
* written out to file.
*
* Input: dirin: directory that has image files
* depth (output depth: 1, 8 or 32; use 32 for RGB)
* width (of each tile; all pix are scaled to the same width)
* ncols (number of tiles in each row)
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "allheaders.h"
/* Change these and recompile if necessary */
static const l_int32 BACKGROUND_COLOR = 0;
static const l_int32 SPACING = 25; /* between images and on outside */
static const l_int32 BLACK_BORDER = 2; /* surrounding each image */
main(int argc,
char **argv)
{
char *dirin, *substr, *fileout;
l_int32 depth, width, ncols;
PIX *pixd;
PIXA *pixa;
static char mainName[] = "scaleandtile";
if (argc != 7)
return ERROR_INT(
"Syntax: scaleandtile dirin substr depth width ncols fileout",
mainName, 1);
dirin = argv[1];
substr = argv[2];
depth = atoi(argv[3]);
width = atoi(argv[4]);
ncols = atoi(argv[5]);
fileout = argv[6];
/* Read the specified images from file */
if ((pixa = pixaReadFiles(dirin, substr)) == NULL)
return ERROR_INT("safiles not made", mainName, 1);
fprintf(stderr, "Number of pix: %d\n", pixaGetCount(pixa));
/* Tile them */
pixd = pixaDisplayTiledAndScaled(pixa, depth, width, ncols,
BACKGROUND_COLOR, SPACING, BLACK_BORDER);
if (depth < 8)
pixWrite(fileout, pixd, IFF_PNG);
else
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixaDestroy(&pixa);
pixDestroy(&pixd);
return 0;
}
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