FFmpeg  4.2.2
unsharp.c
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1 // Generated from libavfilter/opencl/unsharp.cl
3 "#line 1 \"libavfilter/opencl/unsharp.cl\"\n"
4 "/*\n"
5 " * This file is part of FFmpeg.\n"
6 " *\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"
11 " *\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"
16 " *\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"
20 " */\n"
21 "\n"
22 "__kernel void unsharp_global(__write_only image2d_t dst,\n"
23 " __read_only image2d_t src,\n"
24 " int size_x,\n"
25 " int size_y,\n"
26 " float amount,\n"
27 " __constant float *coef_matrix)\n"
28 "{\n"
29 " const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |\n"
30 " CLK_FILTER_NEAREST);\n"
31 " int2 loc = (int2)(get_global_id(0), get_global_id(1));\n"
32 " int2 centre = (int2)(size_x / 2, size_y / 2);\n"
33 "\n"
34 " float4 val = read_imagef(src, sampler, loc);\n"
35 " float4 sum = 0.0f;\n"
36 " int x, y;\n"
37 "\n"
38 " for (y = 0; y < size_y; y++) {\n"
39 " for (x = 0; x < size_x; x++) {\n"
40 " int2 pos = loc + (int2)(x, y) - centre;\n"
41 " sum += coef_matrix[y * size_x + x] *\n"
42 " read_imagef(src, sampler, pos);\n"
43 " }\n"
44 " }\n"
45 "\n"
46 " write_imagef(dst, loc, val + (val - sum) * amount);\n"
47 "}\n"
48 "\n"
49 "__kernel void unsharp_local(__write_only image2d_t dst,\n"
50 " __read_only image2d_t src,\n"
51 " int size_x,\n"
52 " int size_y,\n"
53 " float amount,\n"
54 " __constant float *coef_x,\n"
55 " __constant float *coef_y)\n"
56 "{\n"
57 " const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |\n"
58 " CLK_ADDRESS_CLAMP_TO_EDGE |\n"
59 " CLK_FILTER_NEAREST);\n"
60 " int2 block = (int2)(get_group_id(0), get_group_id(1)) * 16;\n"
61 " int2 pos = (int2)(get_local_id(0), get_local_id(1));\n"
62 "\n"
63 " __local float4 tmp[32][32];\n"
64 "\n"
65 " int rad_x = size_x / 2;\n"
66 " int rad_y = size_y / 2;\n"
67 " int x, y;\n"
68 "\n"
69 " for (y = 0; y <= 1; y++) {\n"
70 " for (x = 0; x <= 1; x++) {\n"
71 " tmp[pos.y + 16 * y][pos.x + 16 * x] =\n"
72 " read_imagef(src, sampler, block + pos + (int2)(16 * x - 8, 16 * y - 8));\n"
73 " }\n"
74 " }\n"
75 "\n"
76 " barrier(CLK_LOCAL_MEM_FENCE);\n"
77 "\n"
78 " float4 val = tmp[pos.y + 8][pos.x + 8];\n"
79 "\n"
80 " float4 horiz[2];\n"
81 " for (y = 0; y <= 1; y++) {\n"
82 " horiz[y] = 0.0f;\n"
83 " for (x = 0; x < size_x; x++)\n"
84 " horiz[y] += coef_x[x] * tmp[pos.y + y * 16][pos.x + 8 + x - rad_x];\n"
85 " }\n"
86 "\n"
87 " barrier(CLK_LOCAL_MEM_FENCE);\n"
88 "\n"
89 " for (y = 0; y <= 1; y++) {\n"
90 " tmp[pos.y + y * 16][pos.x + 8] = horiz[y];\n"
91 " }\n"
92 "\n"
93 " barrier(CLK_LOCAL_MEM_FENCE);\n"
94 "\n"
95 " float4 sum = 0.0f;\n"
96 " for (y = 0; y < size_y; y++)\n"
97 " sum += coef_y[y] * tmp[pos.y + 8 + y - rad_y][pos.x + 8];\n"
98 "\n"
99 " if (block.x + pos.x < get_image_width(dst) &&\n"
100 " block.y + pos.y < get_image_height(dst))\n"
101 " write_imagef(dst, block + pos, val + (val - sum) * amount);\n"
102 "}\n"
103 ;
const char * ff_opencl_source_unsharp
Definition: unsharp.c:2