74 lines
2.6 KiB
Common Lisp
74 lines
2.6 KiB
Common Lisp
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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const sampler_t linear_sampler = (CLK_NORMALIZED_COORDS_FALSE |
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CLK_FILTER_LINEAR);
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const sampler_t nearest_sampler = (CLK_NORMALIZED_COORDS_FALSE |
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CLK_FILTER_NEAREST);
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__kernel void remap_near(__write_only image2d_t dst,
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__read_only image2d_t src,
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__read_only image2d_t xmapi,
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__read_only image2d_t ymapi,
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float4 fill_color)
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{
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int2 p = (int2)(get_global_id(0), get_global_id(1));
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int2 dimi = get_image_dim(src);
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float2 dimf = (float2)(dimi.x, dimi.y);
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float4 val;
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int2 mi;
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float m;
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float4 xmap = read_imagef(xmapi, nearest_sampler, p);
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float4 ymap = read_imagef(ymapi, nearest_sampler, p);
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float2 pos = (float2)(xmap.x, ymap.x);
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pos.xy = pos.xy * 65535.f;
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mi = ((pos >= (float2)(0.f, 0.f)) * (pos < dimf) * (p <= dimi));
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m = mi.x && mi.y;
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val = mix(fill_color, read_imagef(src, nearest_sampler, pos), m);
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write_imagef(dst, p, val);
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}
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__kernel void remap_linear(__write_only image2d_t dst,
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__read_only image2d_t src,
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__read_only image2d_t xmapi,
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__read_only image2d_t ymapi,
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float4 fill_color)
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{
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int2 p = (int2)(get_global_id(0), get_global_id(1));
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int2 dimi = get_image_dim(src);
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float2 dimf = (float2)(dimi.x, dimi.y);
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float4 val;
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int2 mi;
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float m;
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float4 xmap = read_imagef(xmapi, nearest_sampler, p);
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float4 ymap = read_imagef(ymapi, nearest_sampler, p);
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float2 pos = (float2)(xmap.x, ymap.x);
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pos.xy = pos.xy * 65535.f;
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mi = ((pos >= (float2)(0.f, 0.f)) * (pos < dimf) * (p <= dimi));
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m = mi.x && mi.y;
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val = mix(fill_color, read_imagef(src, linear_sampler, pos), m);
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write_imagef(dst, p, val);
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}
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