l_int32 main(int argc,
char **argv)
{
PIX *pixs, *pixd;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
fprintf(stderr, "Test binary image:\n");
pixs = pixRead(BINARY_IMAGE);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
fprintf(stderr, "Test 2 bpp cmapped image with filled cmap:\n");
pixs = pixRead(TWO_BPP_IMAGE);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
fprintf(stderr, "Test 4 bpp cmapped image with unfilled cmap:\n");
pixs = pixRead(FOUR_BPP_IMAGE1);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
fprintf(stderr, "Test 4 bpp cmapped image with filled cmap:\n");
pixs = pixRead(FOUR_BPP_IMAGE2);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
fprintf(stderr, "Test 8 bpp grayscale image:\n");
pixs = pixRead(EIGHT_BPP_IMAGE);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
fprintf(stderr, "Test 8 bpp grayscale cmap image:\n");
pixs = pixRead(EIGHT_BPP_CMAP_IMAGE1);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
fprintf(stderr, "Test 8 bpp color cmap image:\n");
pixs = pixRead(EIGHT_BPP_CMAP_IMAGE2);
pixd = pixOctreeColorQuant(pixs, 200, 0);
RotateTest(pixs, 0.25, rp);
pixDestroy(&pixs);
pixDestroy(&pixd);
fprintf(stderr, "Test rgb image:\n");
pixs = pixRead(RGB_IMAGE);
RotateTest(pixs, 1.0, rp);
pixDestroy(&pixs);
return regTestCleanup(rp);
}
int main(int argc,
char **argv)
{
l_uint8 *data;
l_int32 w, h, n1, n2, n, i, minval, maxval;
l_int32 ncolors, rval, gval, bval, equal;
l_int32 *rmap, *gmap, *bmap;
l_uint32 color;
l_float32 gamma;
BOX *box;
FILE *fp;
PIX *pix1, *pix2, *pix3, *pix4, *pix5, *pix6;
PIX *pixs, *pixb, *pixg, *pixc, *pixd;
PIX *pixg2, *pixcs1, *pixcs2, *pixd1, *pixd2;
PIXA *pixa, *pixa2, *pixa3;
PIXCMAP *cmap, *cmap2;
RGBA_QUAD *cta;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
/* ------------------------ (1) ----------------------------*/
/* Blend with a white background */
pix1 = pixRead("books_logo.png");
pixDisplayWithTitle(pix1, 100, 0, NULL, rp->display);
pix2 = pixAlphaBlendUniform(pix1, 0xffffff00);
pixDisplayWithTitle(pix2, 100, 150, NULL, rp->display);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 0 */
regTestWritePixAndCheck(rp, pix2, IFF_PNG); /* 1 */
/* Generate an alpha layer based on the white background */
pix3 = pixSetAlphaOverWhite(pix2);
pixSetSpp(pix3, 3);
pixWrite("/tmp/alphaops.2.png", pix3, IFF_PNG); /* without alpha */
regTestCheckFile(rp, "/tmp/alphaops.2.png"); /* 2 */
pixSetSpp(pix3, 4);
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 3, with alpha */
pixDisplayWithTitle(pix3, 100, 300, NULL, rp->display);
/* Render on a light yellow background */
pix4 = pixAlphaBlendUniform(pix3, 0xffffe000);
regTestWritePixAndCheck(rp, pix4, IFF_PNG); /* 4 */
pixDisplayWithTitle(pix4, 100, 450, NULL, rp->display);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
/* ------------------------ (2) ----------------------------*/
lept_rmdir("alpha");
lept_mkdir("alpha");
/* Make the transparency (alpha) layer.
* pixs is the mask. We turn it into a transparency (alpha)
* layer by converting to 8 bpp. A small convolution fuzzes
* the mask edges so that you don't see the pixels. */
pixs = pixRead("feyn-fract.tif");
pixGetDimensions(pixs, &w, &h, NULL);
pixg = pixConvert1To8(NULL, pixs, 0, 255);
pixg2 = pixBlockconvGray(pixg, NULL, 1, 1);
regTestWritePixAndCheck(rp, pixg2, IFF_JFIF_JPEG); /* 5 */
pixDisplayWithTitle(pixg2, 0, 0, "alpha", rp->display);
/* Make the viewable image.
* pixc is the image that we see where the alpha layer is
* opaque -- i.e., greater than 0. Scale it to the same
* size as the mask. To visualize what this will look like
* when displayed over a black background, create the black
* background image, pixb, and do the blending with pixcs1
* explicitly using the alpha layer pixg2. */
pixc = pixRead("tetons.jpg");
pixcs1 = pixScaleToSize(pixc, w, h);
regTestWritePixAndCheck(rp, pixcs1, IFF_JFIF_JPEG); /* 6 */
pixDisplayWithTitle(pixcs1, 300, 0, "viewable", rp->display);
pixb = pixCreateTemplate(pixcs1); /* black */
pixd1 = pixBlendWithGrayMask(pixb, pixcs1, pixg2, 0, 0);
regTestWritePixAndCheck(rp, pixd1, IFF_JFIF_JPEG); /* 7 */
pixDisplayWithTitle(pixd1, 600, 0, "alpha-blended 1", rp->display);
/* Embed the alpha layer pixg2 into the color image pixc.
* Write it out as is. Then clean pixcs1 (to 0) under the fully
* transparent part of the alpha layer, and write that result
* out as well. */
pixSetRGBComponent(pixcs1, pixg2, L_ALPHA_CHANNEL);
pixWrite("/tmp/alpha/pixcs1.png", pixcs1, IFF_PNG);
pixcs2 = pixSetUnderTransparency(pixcs1, 0, 0);
pixWrite("/tmp/alpha/pixcs2.png", pixcs2, IFF_PNG);
/* What will this look like over a black background?
* Do the blending explicitly and display. It should
* look identical to the blended result pixd1 before cleaning. */
pixd2 = pixBlendWithGrayMask(pixb, pixcs2, pixg2, 0, 0);
regTestWritePixAndCheck(rp, pixd2, IFF_JFIF_JPEG); /* 8 */
pixDisplayWithTitle(pixd2, 0, 400, "alpha blended 2", rp->display);
/* Read the two images back, ignoring the transparency layer.
* The uncleaned image will come back identical to pixcs1.
* However, the cleaned image will be black wherever
* the alpha layer was fully transparent. It will
* look the same when viewed through the alpha layer,
* but have much better compression. */
pix1 = pixRead("/tmp/alpha/pixcs1.png"); /* just pixcs1 */
pix2 = pixRead("/tmp/alpha/pixcs2.png"); /* cleaned under transparent */
n1 = nbytesInFile("/tmp/alpha/pixcs1.png");
n2 = nbytesInFile("/tmp/alpha/pixcs2.png");
fprintf(stderr, " Original: %d bytes\n Cleaned: %d bytes\n", n1, n2);
regTestWritePixAndCheck(rp, pix1, IFF_JFIF_JPEG); /* 9 */
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 10 */
pixDisplayWithTitle(pix1, 300, 400, "without alpha", rp->display);
pixDisplayWithTitle(pix2, 600, 400, "cleaned under transparent",
rp->display);
pixa = pixaCreate(0);
pixSaveTiled(pixg2, pixa, 1.0, 1, 20, 32);
pixSaveTiled(pixcs1, pixa, 1.0, 1, 20, 0);
pixSaveTiled(pix1, pixa, 1.0, 0, 20, 0);
pixSaveTiled(pixd1, pixa, 1.0, 1, 20, 0);
pixSaveTiled(pixd2, pixa, 1.0, 0, 20, 0);
pixSaveTiled(pix2, pixa, 1.0, 1, 20, 0);
pixd = pixaDisplay(pixa, 0, 0);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 11 */
pixDisplayWithTitle(pixd, 200, 200, "composite", rp->display);
pixWrite("/tmp/alpha/alpha.png", pixd, IFF_JFIF_JPEG);
pixDestroy(&pixd);
pixaDestroy(&pixa);
pixDestroy(&pixs);
pixDestroy(&pixb);
pixDestroy(&pixg);
pixDestroy(&pixg2);
pixDestroy(&pixc);
pixDestroy(&pixcs1);
pixDestroy(&pixcs2);
pixDestroy(&pixd);
pixDestroy(&pixd1);
pixDestroy(&pixd2);
pixDestroy(&pix1);
pixDestroy(&pix2);
/* ------------------------ (3) ----------------------------*/
color = 0xffffa000;
gamma = 1.0;
minval = 0;
maxval = 200;
box = boxCreate(0, 85, 600, 100);
pixa = pixaCreate(6);
pix1 = pixRead("blend-green1.jpg");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-green2.png");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-green3.png");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-orange.jpg");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-yellow.jpg");
pixaAddPix(pixa, pix1, L_INSERT);
pix1 = pixRead("blend-red.png");
pixaAddPix(pixa, pix1, L_INSERT);
n = pixaGetCount(pixa);
pixa2 = pixaCreate(n);
pixa3 = pixaCreate(n);
for (i = 0; i < n; i++) {
pix1 = pixaGetPix(pixa, i, L_CLONE);
pix2 = DoBlendTest(pix1, box, color, gamma, minval, maxval, 1);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 12, 14, ... 22 */
pixDisplayWithTitle(pix2, 150 * i, 0, NULL, rp->display);
pixaAddPix(pixa2, pix2, L_INSERT);
pix2 = DoBlendTest(pix1, box, color, gamma, minval, maxval, 2);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 13, 15, ... 23 */
pixDisplayWithTitle(pix2, 150 * i, 200, NULL, rp->display);
pixaAddPix(pixa3, pix2, L_INSERT);
pixDestroy(&pix1);
}
if (rp->display) {
pixaConvertToPdf(pixa2, 0, 0.75, L_FLATE_ENCODE, 0, "blend 1 test",
"/tmp/alpha/blending1.pdf");
pixaConvertToPdf(pixa3, 0, 0.75, L_FLATE_ENCODE, 0, "blend 2 test",
"/tmp/alpha/blending2.pdf");
}
pixaDestroy(&pixa);
pixaDestroy(&pixa2);
pixaDestroy(&pixa3);
boxDestroy(&box);
/* ------------------------ (4) ----------------------------*/
/* Use one image as the alpha component for a second image */
pix1 = pixRead("test24.jpg");
pix2 = pixRead("marge.jpg");
pix3 = pixScale(pix2, 1.9, 2.2);
pix4 = pixConvertTo8(pix3, 0);
pixSetRGBComponent(pix1, pix4, L_ALPHA_CHANNEL);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 24 */
pixDisplayWithTitle(pix1, 600, 0, NULL, rp->display);
/* Set the alpha value in a colormap to bval */
pix5 = pixOctreeColorQuant(pix1, 128, 0);
cmap = pixGetColormap(pix5);
pixcmapToArrays(cmap, &rmap, &gmap, &bmap, NULL);
n = pixcmapGetCount(cmap);
for (i = 0; i < n; i++) {
pixcmapGetColor(cmap, i, &rval, &gval, &bval);
cta = (RGBA_QUAD *)cmap->array;
cta[i].alpha = bval;
}
/* Test binary serialization/deserialization of colormap with alpha */
pixcmapSerializeToMemory(cmap, 4, &ncolors, &data);
cmap2 = pixcmapDeserializeFromMemory(data, 4, ncolors);
CmapEqual(cmap, cmap2, &equal);
regTestCompareValues(rp, TRUE, equal, 0.0); /* 25 */
pixcmapDestroy(&cmap2);
lept_free(data);
/* Test ascii serialization/deserialization of colormap with alpha */
fp = fopenWriteStream("/tmp/alpha/cmap.4", "w");
pixcmapWriteStream(fp, cmap);
fclose(fp);
fp = fopenReadStream("/tmp/alpha/cmap.4");
cmap2 = pixcmapReadStream(fp);
fclose(fp);
CmapEqual(cmap, cmap2, &equal);
regTestCompareValues(rp, TRUE, equal, 0.0); /* 26 */
pixcmapDestroy(&cmap2);
/* Test r/w for cmapped pix with non-opaque alpha */
pixDisplayWithTitle(pix5, 900, 0, NULL, rp->display);
regTestWritePixAndCheck(rp, pix5, IFF_PNG); /* 27 */
pixWrite("/tmp/alpha/fourcomp.png", pix5, IFF_PNG);
pix6 = pixRead("/tmp/alpha/fourcomp.png");
regTestComparePix(rp, pix5, pix6); /* 28 */
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
pixDestroy(&pix5);
pixDestroy(&pix6);
lept_free(rmap);
lept_free(gmap);
lept_free(bmap);
return regTestCleanup(rp);
}
static l_int32
TestImage(const char *filename,
l_int32 i,
L_REGPARAMS *rp)
{
char buf[256];
l_int32 w, h;
l_float32 factor;
PIX *pix, *pixs, *pixc, *pix32, *pixt, *pixd;
PIXA *pixa;
PROCNAME("TestImage");
if ((pix = pixRead(filename)) == NULL) {
rp->success = FALSE;
return ERROR_INT("pix not made", procName, 1);
}
pixGetDimensions(pix, &w, &h, NULL);
if (w > MAX_WIDTH) {
factor = (l_float32)MAX_WIDTH / (l_float32)w;
pixs = pixScale(pix, factor, factor);
}
else
pixs = pixClone(pix);
pixDestroy(&pix);
pixa = pixaCreate(0);
/* Median cut quantizer (no dither; 5 sigbits) */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 32);
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 16, 5, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 128, 5, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 256, 5, 1, 1);
PixSave32(pixa, pixc, rp);
/* Median cut quantizer (with dither; 5 sigbits) */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixMedianCutQuantGeneral(pixs, 1, 0, 16, 5, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 1, 0, 128, 5, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 1, 0, 256, 5, 1, 1);
PixSave32(pixa, pixc, rp);
/* Median cut quantizer (no dither; 6 sigbits) */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 32);
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 16, 6, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 128, 6, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 256, 6, 1, 1);
PixSave32(pixa, pixc, rp);
/* Median cut quantizer (with dither; 6 sigbits) */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixMedianCutQuantGeneral(pixs, 1, 0, 16, 6, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 1, 0, 128, 6, 1, 1);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantGeneral(pixs, 1, 0, 256, 6, 10, 1);
PixSave32(pixa, pixc, rp);
/* Median cut quantizer (mixed color/gray) */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixMedianCutQuantMixed(pixs, 20, 10, 0, 0, 0);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantMixed(pixs, 60, 20, 0, 0, 0);
PixSave32(pixa, pixc, rp);
pixc = pixMedianCutQuantMixed(pixs, 180, 40, 0, 0, 0);
PixSave32(pixa, pixc, rp);
/* Simple 256 cube octcube quantizer */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixFixedOctcubeQuant256(pixs, 0); /* no dither */
PixSave32(pixa, pixc, rp);
pixc = pixFixedOctcubeQuant256(pixs, 1); /* dither */
PixSave32(pixa, pixc, rp);
/* 2-pass octree quantizer */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixOctreeColorQuant(pixs, 128, 0); /* no dither */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeColorQuant(pixs, 240, 0); /* no dither */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeColorQuant(pixs, 128, 1); /* dither */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeColorQuant(pixs, 240, 1); /* dither */
PixSave32(pixa, pixc, rp);
/* Simple adaptive quantization to 4 or 8 bpp, specifying ncolors */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixOctreeQuantNumColors(pixs, 8, 0); /* fixed: 8 colors */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeQuantNumColors(pixs, 16, 0); /* fixed: 16 colors */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeQuantNumColors(pixs, 64, 0); /* fixed: 64 colors */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeQuantNumColors(pixs, 256, 0); /* fixed: 256 colors */
PixSave32(pixa, pixc, rp);
/* Quantize to fully populated octree (RGB) at given level */
pixSaveTiled(pixs, pixa, 1.0, 1, SPACE, 0);
pixc = pixFixedOctcubeQuantGenRGB(pixs, 2); /* level 2 */
PixSave32(pixa, pixc, rp);
pixc = pixFixedOctcubeQuantGenRGB(pixs, 3); /* level 3 */
PixSave32(pixa, pixc, rp);
pixc = pixFixedOctcubeQuantGenRGB(pixs, 4); /* level 4 */
PixSave32(pixa, pixc, rp);
pixc = pixFixedOctcubeQuantGenRGB(pixs, 5); /* level 5 */
PixSave32(pixa, pixc, rp);
/* Generate 32 bpp RGB image with num colors <= 256 */
pixt = pixOctreeQuantNumColors(pixs, 256, 0); /* cmapped version */
pix32 = pixRemoveColormap(pixt, REMOVE_CMAP_BASED_ON_SRC);
/* Quantize image with few colors at fixed octree leaf level */
pixSaveTiled(pixt, pixa, 1.0, 1, SPACE, 0);
pixc = pixFewColorsOctcubeQuant1(pix32, 2); /* level 2 */
PixSave32(pixa, pixc, rp);
pixc = pixFewColorsOctcubeQuant1(pix32, 3); /* level 3 */
PixSave32(pixa, pixc, rp);
pixc = pixFewColorsOctcubeQuant1(pix32, 4); /* level 4 */
PixSave32(pixa, pixc, rp);
pixc = pixFewColorsOctcubeQuant1(pix32, 5); /* level 5 */
PixSave32(pixa, pixc, rp);
/* Quantize image by population */
pixSaveTiled(pixt, pixa, 1.0, 1, SPACE, 0);
pixc = pixOctreeQuantByPopulation(pixs, 3, 0); /* level 3, no dither */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeQuantByPopulation(pixs, 3, 1); /* level 3, dither */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeQuantByPopulation(pixs, 4, 0); /* level 4, no dither */
PixSave32(pixa, pixc, rp);
pixc = pixOctreeQuantByPopulation(pixs, 4, 1); /* level 4, dither */
PixSave32(pixa, pixc, rp);
/* Mixed color/gray octree quantizer */
pixSaveTiled(pixt, pixa, 1.0, 1, SPACE, 0);
pixc = pixOctcubeQuantMixedWithGray(pix32, 8, 64, 10); /* max delta = 10 */
PixSave32(pixa, pixc, rp);
pixc = pixOctcubeQuantMixedWithGray(pix32, 8, 64, 30); /* max delta = 30 */
PixSave32(pixa, pixc, rp);
pixc = pixOctcubeQuantMixedWithGray(pix32, 8, 64, 50); /* max delta = 50 */
PixSave32(pixa, pixc, rp);
/* Run the high-level converter */
pixSaveTiled(pixt, pixa, 1.0, 1, SPACE, 0);
pixc = pixConvertRGBToColormap(pix32, 1);
PixSave32(pixa, pixc, rp);
pixDestroy(&pix32);
pixDestroy(&pixt);
pixd = pixaDisplay(pixa, 0, 0);
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
sprintf(buf, "/tmp/regout/disp.%d.jpg", i);
pixWrite(buf, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixs);
pixDestroy(&pixd);
pixaDestroy(&pixa);
return 0;
}
l_int32 main(int argc,
char **argv)
{
l_int32 index;
PIX *pixs, *pixc, *pixd;
PIXCMAP *cmap;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
fprintf(stderr, "Test binary image:\n");
pixs = pixRead(BINARY_IMAGE);
pixd = shearTest(pixs, 1);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 0 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
/* We change the black to dark red so that we can see
* that the IP shear does brings in that color. It
* can't bring in black because the cmap is filled. */
fprintf(stderr, "Test 2 bpp cmapped image with filled cmap:\n");
pixs = pixRead(TWO_BPP_IMAGE);
cmap = pixGetColormap(pixs);
pixcmapGetIndex(cmap, 40, 44, 40, &index);
pixcmapResetColor(cmap, index, 100, 0, 0);
pixd = shearTest(pixs, 1);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 1 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
fprintf(stderr, "Test 4 bpp cmapped image with unfilled cmap:\n");
pixs = pixRead(FOUR_BPP_IMAGE1);
pixd = shearTest(pixs, 1);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 2 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
fprintf(stderr, "Test 4 bpp cmapped image with filled cmap:\n");
pixs = pixRead(FOUR_BPP_IMAGE2);
pixd = shearTest(pixs, 1);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 3 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
fprintf(stderr, "Test 8 bpp grayscale image:\n");
pixs = pixRead(EIGHT_BPP_IMAGE);
pixd = shearTest(pixs, 2);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 4 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
fprintf(stderr, "Test 8 bpp grayscale cmap image:\n");
pixs = pixRead(EIGHT_BPP_CMAP_IMAGE1);
pixd = shearTest(pixs, 1);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 5 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
fprintf(stderr, "Test 8 bpp color cmap image:\n");
pixs = pixRead(EIGHT_BPP_CMAP_IMAGE2);
pixd = pixOctreeColorQuant(pixs, 200, 0);
pixc = shearTest(pixd, 3);
regTestWritePixAndCheck(rp, pixc, IFF_JFIF_JPEG); /* 6 */
pixDisplayWithTitle(pixc, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
pixDestroy(&pixc);
fprintf(stderr, "Test rgb image:\n");
pixs = pixRead(RGB_IMAGE);
pixd = shearTest(pixs, 2);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 7 */
pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display);
pixDestroy(&pixs);
pixDestroy(&pixd);
return regTestCleanup(rp);
}
int main(int argc, char** argv) {
char* filename;
int scaleFullScreen = 0;
Console co;
Console* t = &co;
int cx; int cy;
int w, h;
int iterX, iterY;
struct Pix* pngfile;
struct Pix* ping;
struct Pix* palette;
struct Pix* pix32;
int i, ix, iy;
int c;
for (i = 1; i<argc; i++) {
if (strlen(argv[i]) > 1 && !memcmp(argv[i], "-f", 2))
scaleFullScreen=1;
else filename = argv[i];
}
if (access(filename, R_OK)) {
puts("file not found!");
puts("c0npix by rofl0r");
puts("================");
printf("arguments: %s [-f] somefile.[jpg|png|bmp|tiff]\n", argv[0]);
puts("where -f means scale to fullscreen");
puts("export TERM=xterm-256color before usage is recommended.");
exit(1);
}
console_init(t);
point reso = {800, 600};
console_init_graphics(&co, reso, FONT);
console_getbounds(t, &cx, &cy);
pngfile = pixRead(filename);
pixGetDimensions(pngfile, &w, &h, NULL);
ping = pixScale(pngfile, 2.0, 1.0 );
pixDestroy(&pngfile);
palette = pixOctreeColorQuant(ping, 240, 1);
if (palette == NULL) { puts("palette is nul"); goto finish_him; }
pix32 = pixConvertTo32(palette);
iterX = pix32->w;
iterY = pix32->h;
int* bufptr = (int*) pix32->data;
if (bufptr == NULL) {
puts("bufptr is null");
goto finish_him;
}
int startx = 0;
int starty = 0;
paint:
for(iy = starty; iy < starty + cy; iy++) {
bufptr = (int*) pix32->data + (iy * pix32->w) + startx;
for(ix = startx; ix < startx + cx; ix++) {
console_setcolor(t, 0, *((rgb_t*) bufptr));
console_goto(t, ix - startx, iy - starty);
console_addchar(t, ' ', 0);
bufptr++;
}
}
console_draw(t);
//console_printfxy(t, 0, 0, "%d", (int) c);
while ((c = console_getkey(t)) != 'q') {
console_setcolor(t, 0, RGB(0,0,0));
switch(c) {
case CK_CURSOR_UP:
if(starty > 0) starty--;
break;
case CK_CURSOR_DOWN:
if(starty < (int) pix32->h - cy)
starty++;
break;
case CK_CURSOR_LEFT:
if(startx > 0)
startx--;
break;
case CK_CURSOR_RIGHT:
if(startx < (int) pix32->w - cx)
startx++;
break;
default:
goto loopend; // ignore mouse movement and similar stuff
break;
}
goto paint;
loopend: ;
}
pixDestroy(&palette);
pixDestroy(&pix32);
console_refresh(t);
finish_him:
//console_getkey(t);
console_cleanup(t);
return 0;
}
int main(int argc,
char **argv)
{
char textstr[256];
l_int32 w, h, d, i;
l_uint32 srcval, dstval;
l_float32 scalefact, sat, fract;
L_BMF *bmf8;
L_KERNEL *kel;
NUMA *na;
PIX *pix, *pixs, *pixs1, *pixs2, *pixd;
PIX *pixt0, *pixt1, *pixt2, *pixt3, *pixt4;
PIXA *pixa, *pixaf;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
pix = pixRead(filein);
pixGetDimensions(pix, &w, &h, &d);
if (d != 32)
return ERROR_INT("file not 32 bpp", argv[0], 1);
scalefact = (l_float32)WIDTH / (l_float32)w;
pixs = pixScale(pix, scalefact, scalefact);
w = pixGetWidth(pixs);
pixaf = pixaCreate(5);
/* TRC: vary gamma */
pixa = pixaCreate(20);
for (i = 0; i < 20; i++) {
pixt0 = pixGammaTRC(NULL, pixs, 0.3 + 0.15 * i, 0, 255);
pixaAddPix(pixa, pixt0, L_INSERT);
}
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, w, 5, 0, 10, 2);
pixSaveTiled(pixt1, pixaf, 1.0, 1, 20, 32);
regTestWritePixAndCheck(rp, pixt1, IFF_PNG); /* 0 */
pixDisplayWithTitle(pixt1, 0, 100, "TRC Gamma", rp->display);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
/* TRC: vary black point */
pixa = pixaCreate(20);
for (i = 0; i < 20; i++) {
pixt0 = pixGammaTRC(NULL, pixs, 1.0, 5 * i, 255);
pixaAddPix(pixa, pixt0, L_INSERT);
}
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, w, 5, 0, 10, 2);
pixSaveTiled(pixt1, pixaf, 1.0, 1, 20, 0);
regTestWritePixAndCheck(rp, pixt1, IFF_PNG); /* 1 */
pixDisplayWithTitle(pixt1, 300, 100, "TRC", rp->display);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
/* Vary hue */
pixa = pixaCreate(20);
for (i = 0; i < 20; i++) {
pixt0 = pixModifyHue(NULL, pixs, 0.01 + 0.05 * i);
pixaAddPix(pixa, pixt0, L_INSERT);
}
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, w, 5, 0, 10, 2);
pixSaveTiled(pixt1, pixaf, 1.0, 1, 20, 0);
regTestWritePixAndCheck(rp, pixt1, IFF_PNG); /* 2 */
pixDisplayWithTitle(pixt1, 600, 100, "Hue", rp->display);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
/* Vary saturation */
pixa = pixaCreate(20);
na = numaCreate(20);
for (i = 0; i < 20; i++) {
pixt0 = pixModifySaturation(NULL, pixs, -0.9 + 0.1 * i);
pixMeasureSaturation(pixt0, 1, &sat);
pixaAddPix(pixa, pixt0, L_INSERT);
numaAddNumber(na, sat);
}
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, w, 5, 0, 10, 2);
pixSaveTiled(pixt1, pixaf, 1.0, 1, 20, 0);
gplotSimple1(na, GPLOT_PNG, "/tmp/regout/enhance.7", "Average Saturation");
regTestWritePixAndCheck(rp, pixt1, IFF_PNG); /* 3 */
pixDisplayWithTitle(pixt1, 900, 100, "Saturation", rp->display);
numaDestroy(&na);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
/* Vary contrast */
pixa = pixaCreate(20);
for (i = 0; i < 20; i++) {
pixt0 = pixContrastTRC(NULL, pixs, 0.1 * i);
pixaAddPix(pixa, pixt0, L_INSERT);
}
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, w, 5, 0, 10, 2);
pixSaveTiled(pixt1, pixaf, 1.0, 1, 20, 0);
regTestWritePixAndCheck(rp, pixt1, IFF_PNG); /* 4 */
pixDisplayWithTitle(pixt1, 0, 400, "Contrast", rp->display);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
/* Vary sharpening */
pixa = pixaCreate(20);
for (i = 0; i < 20; i++) {
pixt0 = pixUnsharpMasking(pixs, 3, 0.01 + 0.15 * i);
pixaAddPix(pixa, pixt0, L_INSERT);
}
pixt1 = pixaDisplayTiledAndScaled(pixa, 32, w, 5, 0, 10, 2);
pixSaveTiled(pixt1, pixaf, 1.0, 1, 20, 0);
regTestWritePixAndCheck(rp, pixt1, IFF_PNG); /* 5 */
pixDisplayWithTitle(pixt1, 300, 400, "Sharp", rp->display);
pixDestroy(&pixt1);
pixaDestroy(&pixa);
/* Hue constant mapping to lighter background */
pixa = pixaCreate(11);
bmf8 = bmfCreate("fonts", 8);
pixt0 = pixRead("candelabrum-11.jpg");
composeRGBPixel(230, 185, 144, &srcval); /* select typical bg pixel */
for (i = 0; i <= 10; i++) {
fract = 0.10 * i;
pixelFractionalShift(230, 185, 144, fract, &dstval);
pixt1 = pixLinearMapToTargetColor(NULL, pixt0, srcval, dstval);
snprintf(textstr, 50, "Fract = %5.1f", fract);
pixt2 = pixAddSingleTextblock(pixt1, bmf8, textstr, 0xff000000,
L_ADD_BELOW, NULL);
pixSaveTiledOutline(pixt2, pixa, 1.0, (i % 4 == 0) ? 1 : 0, 30, 2, 32);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
}
pixDestroy(&pixt0);
pixd = pixaDisplay(pixa, 0, 0);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 6 */
pixDisplayWithTitle(pixd, 600, 400, "Constant hue", rp->display);
bmfDestroy(&bmf8);
pixaDestroy(&pixa);
pixDestroy(&pixd);
/* Delayed testing of saturation plot */
regTestCheckFile(rp, "/tmp/regout/enhance.7.png"); /* 7 */
/* Display results */
pixd = pixaDisplay(pixaf, 0, 0);
regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 8 */
pixDisplayWithTitle(pixd, 100, 100, "All", rp->display);
pixDestroy(&pixd);
pixaDestroy(&pixaf);
pixDestroy(&pix);
pixDestroy(&pixs);
/* -----------------------------------------------*
* Test global color transforms *
* -----------------------------------------------*/
/* Make identical cmap and rgb images */
pix = pixRead("wet-day.jpg");
pixs1 = pixOctreeColorQuant(pix, 200, 0);
pixs2 = pixRemoveColormap(pixs1, REMOVE_CMAP_TO_FULL_COLOR);
regTestComparePix(rp, pixs1, pixs2); /* 9 */
/* Make a diagonal color transform matrix */
kel = kernelCreate(3, 3);
kernelSetElement(kel, 0, 0, 0.7);
kernelSetElement(kel, 1, 1, 0.4);
kernelSetElement(kel, 2, 2, 1.3);
/* Apply to both cmap and rgb images. */
pixt1 = pixMultMatrixColor(pixs1, kel);
pixt2 = pixMultMatrixColor(pixs2, kel);
regTestComparePix(rp, pixt1, pixt2); /* 10 */
kernelDestroy(&kel);
/* Apply the same transform in the simpler interface */
pixt3 = pixMultConstantColor(pixs1, 0.7, 0.4, 1.3);
pixt4 = pixMultConstantColor(pixs2, 0.7, 0.4, 1.3);
regTestComparePix(rp, pixt3, pixt4); /* 11 */
regTestComparePix(rp, pixt1, pixt3); /* 12 */
regTestWritePixAndCheck(rp, pixt1, IFF_JFIF_JPEG); /* 13 */
pixDestroy(&pix);
pixDestroy(&pixs1);
pixDestroy(&pixs2);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
pixDestroy(&pixt3);
pixDestroy(&pixt4);
return regTestCleanup(rp);
}
