/*====================================================================* - 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. *====================================================================*/ /* * blend2_reg.c * * Regression test for this function: * pixBlendWithGrayMask() */ #ifdef HAVE_CONFIG_H #include #endif /* HAVE_CONFIG_H */ #include "allheaders.h" /* In case libpng is not enabled */ static const char fname_png[64] = "/tmp/lept/regout/blend2.14.png"; static const char fname_bmp[64] = "/tmp/lept/regout/blend2.14.bmp"; int main(int argc, char **argv) { l_int32 i, j, w1, h1, w2, h2, w, h; BOX *box1, *box2; PIX *pixg, *pixs1, *pixs2, *pix1, *pix2, *pix3, *pix4, *pix5; PIXA *pixa; L_REGPARAMS *rp; if (regTestSetup(argc, argv, &rp)) return 1; /* --- Set up the 8 bpp blending image --- */ pixg = pixCreate(660, 500, 8); for (i = 0; i < 500; i++) for (j = 0; j < 660; j++) pixSetPixel(pixg, j, i, (l_int32)(0.775 * j) % 256); /* --- Set up the initial color images to be blended together --- */ pixs1 = pixRead("wyom.jpg"); pixs2 = pixRead("fish24.jpg"); pixGetDimensions(pixs1, &w, &h, NULL); pixGetDimensions(pixs1, &w1, &h1, NULL); pixGetDimensions(pixs2, &w2, &h2, NULL); h = L_MIN(h1, h2); w = L_MIN(w1, w2); box1 = boxCreate(0, 0, w, h); box2 = boxCreate(0, 300, 660, 500); pix1 = pixClipRectangle(pixs1, box1, NULL); pix2 = pixClipRectangle(pixs2, box2, NULL); pixDestroy(&pixs1); pixDestroy(&pixs2); boxDestroy(&box1); boxDestroy(&box2); /* --- Blend 2 rgb images --- */ pixa = pixaCreate(0); pix3 = pixBlendWithGrayMask(pix1, pix2, pixg, 50, 50); pixaAddPix(pixa, pix1, L_COPY); pixaAddPix(pixa, pix2, L_COPY); pixaAddPix(pixa, pix3, L_INSERT); regTestWritePixAndCheck(rp, pixg, IFF_JFIF_JPEG); /* 0 */ regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 1 */ regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 2 */ regTestWritePixAndCheck(rp, pix3, IFF_JFIF_JPEG); /* 3 */ /* --- Blend 2 grayscale images --- */ pix3 = pixConvertRGBToLuminance(pix1); pix4 = pixConvertRGBToLuminance(pix2); pix5 = pixBlendWithGrayMask(pix3, pix4, pixg, 50, 50); pixaAddPix(pixa, pix3, L_INSERT); pixaAddPix(pixa, pix4, L_INSERT); pixaAddPix(pixa, pix5, L_INSERT); regTestWritePixAndCheck(rp, pix3, IFF_JFIF_JPEG); /* 4 */ regTestWritePixAndCheck(rp, pix4, IFF_JFIF_JPEG); /* 5 */ regTestWritePixAndCheck(rp, pix5, IFF_JFIF_JPEG); /* 6 */ /* --- Blend a colormap image and an rgb image --- */ pix3 = pixFixedOctcubeQuantGenRGB(pix2, 2); pix4 = pixBlendWithGrayMask(pix1, pix3, pixg, 50, 50); pixaAddPix(pixa, pix1, L_COPY); pixaAddPix(pixa, pix3, L_INSERT); pixaAddPix(pixa, pix4, L_INSERT); regTestWritePixAndCheck(rp, pix3, IFF_JFIF_JPEG); /* 7 */ regTestWritePixAndCheck(rp, pix4, IFF_JFIF_JPEG); /* 8 */ /* --- Blend a colormap image and a grayscale image --- */ pix3 = pixConvertRGBToLuminance(pix1); pix4 = pixFixedOctcubeQuantGenRGB(pix2, 2); pix5 = pixBlendWithGrayMask(pix3, pix4, pixg, 50, 50); pixaAddPix(pixa, pix3, L_COPY); pixaAddPix(pixa, pix4, L_COPY); pixaAddPix(pixa, pix5, L_INSERT); regTestWritePixAndCheck(rp, pix3, IFF_JFIF_JPEG); /* 9 */ regTestWritePixAndCheck(rp, pix4, IFF_JFIF_JPEG); /* 10 */ regTestWritePixAndCheck(rp, pix5, IFF_JFIF_JPEG); /* 11 */ pix5 = pixBlendWithGrayMask(pix3, pix4, pixg, -100, -100); pixaAddPix(pixa, pix3, L_INSERT); pixaAddPix(pixa, pix4, L_INSERT); pixaAddPix(pixa, pix5, L_INSERT); regTestWritePixAndCheck(rp, pix5, IFF_JFIF_JPEG); /* 12 */ pixDestroy(&pix1); pixDestroy(&pix2); /* --------- Test png read/write with alpha channel --------- */ /* First make pix2, using pixg as the alpha channel */ pix1 = pixRead("fish24.jpg"); box1 = boxCreate(0, 300, 660, 500); pix2 = pixClipRectangle(pix1, box1, NULL); boxDestroy(&box1); pixaAddPix(pixa, pix2, L_COPY); regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 13 */ pixSetRGBComponent(pix2, pixg, L_ALPHA_CHANNEL); regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 14 */ /* To see the alpha channel, blend with a black image */ pix3 = pixCreate(660, 500, 32); pix4 = pixBlendWithGrayMask(pix3, pix2, NULL, 0, 0); pixaAddPix(pixa, pix4, L_INSERT); regTestWritePixAndCheck(rp, pix4, IFF_JFIF_JPEG); /* 15 */ /* Read the RGBA image #14 back */ #if defined(HAVE_LIBPNG) pix4 = pixRead(fname_png); #else pix4 = pixRead(fname_bmp); #endif /* Make sure that the alpha channel image hasn't changed */ pix5 = pixGetRGBComponent(pix4, L_ALPHA_CHANNEL); regTestComparePix(rp, pixg, pix5); /* 16 */ pixDestroy(&pix5); /* Blend again with a black image */ pix5 = pixBlendWithGrayMask(pix3, pix4, NULL, 0, 0); pixaAddPix(pixa, pix5, L_INSERT); regTestWritePixAndCheck(rp, pix5, IFF_JFIF_JPEG); /* 17 */ /* Blend with a white image */ pixSetAll(pix3); pix5 = pixBlendWithGrayMask(pix3, pix4, NULL, 0, 0); pixaAddPix(pixa, pix5, L_INSERT); regTestWritePixAndCheck(rp, pix5, IFF_JFIF_JPEG); /* 18 */ pixDestroy(&pixg); pixDestroy(&pix1); pixDestroy(&pix2); pixDestroy(&pix3); pixDestroy(&pix4); /* Display results */ pix1 = pixaDisplayTiledInColumns(pixa, 3, 1.0, 40, 2); pixDisplayWithTitle(pix1, 100, 100, NULL, rp->display); regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 19 */ pixDestroy(&pix1); pixaDestroy(&pixa); return regTestCleanup(rp); }