diff options
Diffstat (limited to 'converter/ppm/ppmtoleaf.c')
| -rw-r--r-- | converter/ppm/ppmtoleaf.c | 70 |
1 files changed, 36 insertions, 34 deletions
diff --git a/converter/ppm/ppmtoleaf.c b/converter/ppm/ppmtoleaf.c index dcff0985..dc73dc48 100644 --- a/converter/ppm/ppmtoleaf.c +++ b/converter/ppm/ppmtoleaf.c @@ -11,7 +11,7 @@ * * Known problems: pgms are not converted to leaf grayscales; they are * converted to 8-bit color images with all gray for colors. - * + * */ #include <stdio.h> @@ -31,7 +31,7 @@ static int colorstobpp(unsigned int const colors) { int bpp; - + if (colors <= 2) bpp = 1; else if (colors <= 256) @@ -49,15 +49,14 @@ GetPixel(int const x, int const y) { int color; - + color = ppm_lookupcolor(cht, &pixels[y][x]); - + return color; } - static void leaf_writeimg(unsigned int const width, unsigned int const height, @@ -70,52 +69,52 @@ leaf_writeimg(unsigned int const width, */ /* NOTE: byte order in ileaf img file fmt is big-endian, always! */ - + /* magic */ fputc(0x89, stdout); fputc(0x4f, stdout); fputc(0x50, stdout); fputc(0x53, stdout); - + /* version 4 */ fputc(0x00, stdout); fputc(0x04, stdout); - + /* h resolution: pixels/inch: say 75=screen resolution */ fputc(0x00, stdout); fputc(75, stdout); - + /* v resolution: pixels/inch: say 75=screen resolution */ fputc(0x00, stdout); fputc(75, stdout); - + /* unique id, could be anything */ fputc(0x01, stdout); fputc(0x02, stdout); fputc(0x03, stdout); fputc(0x04, stdout); - + /* x offset, always zero */ fputc(0x00, stdout); fputc(0x00, stdout); - + /* y offset, always zero */ fputc(0x00, stdout); fputc(0x00, stdout); - + /* dimensions 64k x 64k max */ fputc((unsigned char)((width >> 8) & 0x00ff), stdout); fputc((unsigned char)(width & 0x00ff), stdout); fputc((unsigned char)((height >> 8) & 0x00ff), stdout); fputc((unsigned char)(height & 0x00ff), stdout); - + /* depth */ fputc(0x00, stdout); fputc((unsigned char)depth, stdout); - + /* compressed, 0=uncompressed, 1=compressed */ fputc(0x00, stdout); - + /* format, mono/gray = 0x20000000, RGB=0x29000000 */ if (depth == 1) fputc(0x20, stdout); @@ -125,7 +124,7 @@ leaf_writeimg(unsigned int const width, fputc(0x00, stdout); fputc(0x00, stdout); fputc(0x00, stdout); - + /* colormap size */ if (depth == 8) { unsigned int i; @@ -139,10 +138,10 @@ leaf_writeimg(unsigned int const width, fputc((unsigned char) Green[i]*255/maxval, stdout); for (i = 0; i < 256; ++i) fputc((unsigned char) Blue[i]*255/maxval, stdout); - + for (row=0; row < height; ++row) { unsigned int col; - for (col = 0; col < width; ++col) + for (col = 0; col < width; ++col) fputc(GetPixel(col, row), stdout); if ((width % 2) != 0) fputc(0x00, stdout); /* pad to 2-bytes */ @@ -180,18 +179,18 @@ leaf_writeimg(unsigned int const width, fputc(0x00, stdout); fputc(0x00, stdout); - + for (row = 0; row < height; ++row) { unsigned int col; - for (col = 0; col < width; ++col) + for (col = 0; col < width; ++col) fputc(pixels[row][col].r * 255 / maxval, stdout); if (width % 2 != 0) fputc(0x00, stdout); /* pad to 2-bytes */ - for (col = 0; col < width; ++col) + for (col = 0; col < width; ++col) fputc(pixels[row][col].g * 255 / maxval, stdout); if (width % 2 != 0) fputc(0x00, stdout); /* pad to 2-bytes */ - for (col = 0; col < width; ++col) + for (col = 0; col < width; ++col) fputc(pixels[row][col].b * 255 / maxval, stdout); if (width % 2 != 0) fputc(0x00, stdout); /* pad to 2-bytes */ @@ -212,24 +211,24 @@ main(int argc, const char * argv[]) { pixval maxval; colorhist_vector chv; const char * const usage = "[ppmfile]"; - + pm_proginit(&argc, argv); - + argn = 1; - + if (argn < argc) { ifP = pm_openr(argv[argn]); argn++; } else ifP = stdin; - + if (argn != argc) pm_usage(usage); - + pixels = ppm_readppm(ifP, &cols, &rows, &maxval); - + pm_close(ifP); - + /* Figure out the colormap. */ pm_message("Computing colormap..."); chv = ppm_computecolorhist(pixels, cols, rows, MAXCOLORS, &colors); @@ -237,14 +236,14 @@ main(int argc, const char * argv[]) { unsigned int i; pm_message("... Done. %u colors found.", colors); - + for (i = 0; i < colors; ++i) { Red[i] = (int) PPM_GETR( chv[i].color); Green[i] = (int) PPM_GETG( chv[i].color); Blue[i] = (int) PPM_GETB( chv[i].color); } BitsPerPixel = colorstobpp(colors); - + /* And make a hash table for fast lookup. */ cht = ppm_colorhisttocolorhash(chv, colors); ppm_freecolorhist(chv); @@ -252,8 +251,11 @@ main(int argc, const char * argv[]) { BitsPerPixel = 24; pm_message(" ... Done. 24-bit true color %u color image.", colors); } - + leaf_writeimg(cols, rows, BitsPerPixel, colors, maxval); - + return 0; } + + + |