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https://github.com/nyanmisaka/ffmpeg-rockchip.git
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6135c958cd
Behaves like the existing avgblur filter, except working on OpenCL hardware frames. Takes exactly the same options. Signed-off-by: Mark Thompson <sw@jkqxz.net>
61 lines
2.1 KiB
Common Lisp
61 lines
2.1 KiB
Common Lisp
/*
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* Copyright (c) 2018 Dylan Fernando
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*
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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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__kernel void avgblur_horiz(__write_only image2d_t dst,
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__read_only image2d_t src,
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int rad)
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{
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const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
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CLK_FILTER_NEAREST);
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int2 loc = (int2)(get_global_id(0), get_global_id(1));
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int2 size = (int2)(get_global_size(0), get_global_size(1));
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int count = 0;
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float4 acc = (float4)(0,0,0,0);
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for (int xx = max(0, loc.x - rad); xx < min(loc.x + rad + 1, size.x); xx++) {
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count++;
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acc += read_imagef(src, sampler, (int2)(xx, loc.y));
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}
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write_imagef(dst, loc, acc / count);
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}
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__kernel void avgblur_vert(__write_only image2d_t dst,
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__read_only image2d_t src,
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int radv)
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{
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const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
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CLK_FILTER_NEAREST);
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int2 loc = (int2)(get_global_id(0), get_global_id(1));
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int2 size = (int2)(get_global_size(0), get_global_size(1));
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int count = 0;
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float4 acc = (float4)(0,0,0,0);
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for (int yy = max(0, loc.y - radv); yy < min(loc.y + radv + 1, size.y); yy++) {
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count++;
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acc += read_imagef(src, sampler, (int2)(loc.x, yy));
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}
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write_imagef(dst, loc, acc / count);
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}
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