third-party/leptonica/prog/scaletest1.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.
*====================================================================*/
/*
* scaletest1.c
*
* scaletest1 filein scalex scaley fileout
* where
* scalex, scaley are floating point input
*/
#include "allheaders.h"
int main(int argc,
char **argv)
{
char *filein, *fileout;
l_int32 d;
l_float32 scalex, scaley;
PIX *pixs, *pixd;
static char mainName[] = "scaletest1";
if (argc != 5)
return ERROR_INT(" Syntax: scaletest1 filein scalex scaley fileout",
mainName, 1);
filein = argv[1];
scalex = atof(argv[2]);
scaley = atof(argv[3]);
fileout = argv[4];
if ((pixs = pixRead(filein)) == NULL)
return ERROR_INT("pixs not made", mainName, 1);
/* choose type of scaling operation */
#if 1
pixd = pixScale(pixs, scalex, scaley);
#elif 0
pixd = pixScaleLI(pixs, scalex, scaley);
#elif 0
pixd = pixScaleSmooth(pixs, scalex, scaley);
#elif 0
pixd = pixScaleAreaMap(pixs, scalex, scaley);
#elif 0
pixd = pixScaleBySampling(pixs, scalex, scaley);
#else
pixd = pixScaleToGray(pixs, scalex);
#endif
d = pixGetDepth(pixd);
#if 1
if (d <= 8)
pixWrite(fileout, pixd, IFF_PNG);
else
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
#else
pixWrite(fileout, pixd, IFF_PNG);
#endif
pixDestroy(&pixs);
pixDestroy(&pixd);
return 0;
}