3 "#line 1 \"libavfilter/opencl/colorkey.cl\"\n"
5 " * This file is part of FFmpeg.\n"
7 " * FFmpeg is free software; you can redistribute it and/or\n"
8 " * modify it under the terms of the GNU Lesser General Public\n"
9 " * License as published by the Free Software Foundation; either\n"
10 " * version 2.1 of the License, or (at your option) any later version.\n"
12 " * FFmpeg is distributed in the hope that it will be useful,\n"
13 " * but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
14 " * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
15 " * Lesser General Public License for more details.\n"
17 " * You should have received a copy of the GNU Lesser General Public\n"
18 " * License along with FFmpeg; if not, write to the Free Software\n"
19 " * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
22 "const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE |\n"
23 " CLK_FILTER_NEAREST;\n"
25 "__kernel void colorkey_blend(\n"
26 " __read_only image2d_t src,\n"
27 " __write_only image2d_t dst,\n"
28 " float4 colorkey_rgba,\n"
29 " float similarity,\n"
32 " int2 loc = (int2)(get_global_id(0), get_global_id(1));\n"
33 " float4 pixel = read_imagef(src, sampler, loc);\n"
34 " float diff = distance(pixel.xyz, colorkey_rgba.xyz);\n"
36 " pixel.s3 = clamp((diff - similarity) / blend, 0.0f, 1.0f);\n"
37 " write_imagef(dst, loc, pixel);\n"
40 "__kernel void colorkey(\n"
41 " __read_only image2d_t src,\n"
42 " __write_only image2d_t dst,\n"
43 " float4 colorkey_rgba,\n"
46 " int2 loc = (int2)(get_global_id(0), get_global_id(1));\n"
47 " float4 pixel = read_imagef(src, sampler, loc);\n"
48 " float diff = distance(pixel.xyz, colorkey_rgba.xyz);\n"
50 " pixel.s3 = (diff > similarity) ? 1.0f : 0.0f;\n"
51 " write_imagef(dst, loc, pixel);\n"
const char * ff_opencl_source_colorkey