diff options
author | Juha Vehviläinen <jusu@users.sourceforge.net> | 2002-07-09 12:19:44 +0000 |
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committer | Juha Vehviläinen <jusu@users.sourceforge.net> | 2002-07-09 12:19:44 +0000 |
commit | 311e440f30c218015d17fb390f50829f430d5128 (patch) | |
tree | f2e4c13916e4b0fecae92e71d3ae21bdc4fe30f4 /Plugins/screen.c | |
parent | 85d5e43cd4856dd3d14fefd450a0606666b6dc80 (diff) |
PixelPack002 by Olaf Matthes
svn path=/trunk/Framestein/; revision=30
Diffstat (limited to 'Plugins/screen.c')
-rw-r--r-- | Plugins/screen.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/Plugins/screen.c b/Plugins/screen.c new file mode 100644 index 0000000..76fd6bd --- /dev/null +++ b/Plugins/screen.c @@ -0,0 +1,90 @@ +// +// screen - screen 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: screen +// + +#include <stdlib.h> +#include "plugin.h" + +void perform_effect(struct frame f, struct args a) +{ + printf("Using screen 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; + + w = f1.width<f2.width ? f1.width : f2.width; + h = f1.height<f2.height ? f1.height : f2.height; + + printf("difference\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(255 - ( (255-r16(pix1_16[x])) * (255-r16(pix2_16[x]) ) / 255 )); + g = klamp255(255 - ( (255-g16(pix1_16[x])) * (255-g16(pix2_16[x]) ) / 255 )); + b = klamp255(255 - ( (255-b16(pix1_16[x])) * (255-b16(pix2_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(255 - ( (255-r24(pix1_24[x])) * (255-r24(pix2_24[x]) ) / 255 )); + g = klamp255(255 - ( (255-g24(pix1_24[x])) * (255-g24(pix2_24[x]) ) / 255 )); + b = klamp255(255 - ( (255-b24(pix1_24[x])) * (255-b24(pix2_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(255 - ( (255-r32(pix1_32[x])) * (255-r32(pix2_32[x]) ) / 255 )); + g = klamp255(255 - ( (255-g32(pix1_32[x])) * (255-g32(pix2_32[x]) ) / 255 )); + b = klamp255(255 - ( (255-b32(pix1_32[x])) * (255-b32(pix2_32[x]) ) / 255 )); + pix2_32[x] = rgbtocolor32(r, g, b); + } + } + break; + } +} |