diff options
Diffstat (limited to 'Plugins/softlight.c')
| -rw-r--r-- | Plugins/softlight.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/Plugins/softlight.c b/Plugins/softlight.c new file mode 100644 index 0000000..90dc4b0 --- /dev/null +++ b/Plugins/softlight.c @@ -0,0 +1,92 @@ +// +// softlight - softlight overlay of two images +// +// written by Olaf Matthes <olaf.matthes@gmx.de> +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +// +// usage: softlight +// + +#include <stdlib.h> +#include "plugin.h" +#include "tools.h" + +void perform_effect(struct frame f, struct args a) +{ + printf("Using softlight as effect does nothing!\n"); +} + +void perform_copy(struct frame f1, struct frame f2, struct args a) +{ + short x, y, w, h; + pixel16 *pix1_16, *pix2_16; + pixel24 *pix1_24, *pix2_24; + pixel32 *pix1_32, *pix2_32; + byte r, g, b; + char *t; + + w = f1.width<f2.width ? f1.width : f2.width; + h = f1.height<f2.height ? f1.height : f2.height; + + printf("soft light\n"); + + switch(f1.pixelformat) + { + case 16: + // compare images pixel by pixel + for(y = 0; y < h; y++) + { + pix1_16 = scanline16(f1, y); + pix2_16 = scanline16(f2, y); + for(x = 0; x < w; x++) + { + r = klamp255(r16(pix1_16[x]) < 128 ? 2*scl(r16(pix2_16[x]),0,255,64,192)*r16(pix1_16[x])/255 : 255-(2*(255-scl(r16(pix2_16[x]),0,255,64,192))*(255-r16(pix1_16[x]))/255)); + g = klamp255(g16(pix1_16[x]) < 128 ? 2*scl(g16(pix2_16[x]),0,255,64,192)*g16(pix1_16[x])/255 : 255-(2*(255-scl(g16(pix2_16[x]),0,255,64,192))*(255-g16(pix1_16[x]))/255)); + b = klamp255(b16(pix1_16[x]) < 128 ? 2*scl(b16(pix2_16[x]),0,255,64,192)*b16(pix1_16[x])/255 : 255-(2*(255-scl(b16(pix2_16[x]),0,255,64,192))*(255-b16(pix1_16[x]))/255)); + pix2_16[x] = rgbtocolor16(r, g, b); + } + } + break; + case 24: + for(y = 0; y < h; y++) + { + pix1_24 = scanline24(f1, y); + pix2_24 = scanline24(f2, y); + for(x = 0; x < w; x++) + { + r = klamp255(r24(pix1_24[x]) < 128 ? 2*scl(r24(pix2_24[x]),0,255,64,192)*r24(pix1_24[x])/255 : 255-(2*(255-scl(r24(pix2_24[x]),0,255,64,192))*(255-r24(pix1_24[x]))/255)); + g = klamp255(g24(pix1_24[x]) < 128 ? 2*scl(g24(pix2_24[x]),0,255,64,192)*g24(pix1_24[x])/255 : 255-(2*(255-scl(g24(pix2_24[x]),0,255,64,192))*(255-g24(pix1_24[x]))/255)); + b = klamp255(b24(pix1_24[x]) < 128 ? 2*scl(b24(pix2_24[x]),0,255,64,192)*b24(pix1_24[x])/255 : 255-(2*(255-scl(b24(pix2_24[x]),0,255,64,192))*(255-b24(pix1_24[x]))/255)); + pix2_24[x] = rgbtocolor24(r, g, b); + } + } + break; + case 32: + for(y = 0; y < h; y++) + { + pix1_32 = scanline32(f1, y); + pix2_32 = scanline32(f2, y); + for(x = 0; x < w; x++) + { + r = klamp255(r32(pix1_32[x]) < 128 ? 2*scl(r32(pix2_32[x]),0,255,64,192)*r32(pix1_32[x])/255 : 255-(2*(255-scl(r32(pix2_32[x]),0,255,64,192))*(255-r32(pix1_32[x]))/255)); + g = klamp255(g32(pix1_32[x]) < 128 ? 2*scl(g32(pix2_32[x]),0,255,64,192)*g32(pix1_32[x])/255 : 255-(2*(255-scl(g32(pix2_32[x]),0,255,64,192))*(255-g32(pix1_32[x]))/255)); + b = klamp255(b32(pix1_32[x]) < 128 ? 2*scl(b32(pix2_32[x]),0,255,64,192)*b32(pix1_32[x])/255 : 255-(2*(255-scl(b32(pix2_32[x]),0,255,64,192))*(255-b32(pix1_32[x]))/255)); + pix2_32[x] = rgbtocolor32(r, g, b); + } + } + break; + } +} |