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/*====================================================================*
- 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.
*====================================================================*/
/*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_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 */
int 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];
setLeptDebugOK(1);
/* Avoid division by zero if ncols == 0 and require a positive value. */
if (ncols <= 0)
return ERROR_INT("Expected a positive value for ncols", mainName, 1);
/* Read the specified images from file */
if ((pixa = pixaReadFiles(dirin, substr)) == NULL)
return ERROR_INT("safiles not made", mainName, 1);
lept_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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