mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
128 lines
5.4 KiB
Common Lisp
128 lines
5.4 KiB
Common Lisp
/*
|
|
* Copyright (c) 2018 Danil Iashchenko
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
__kernel void convolution_global(__write_only image2d_t dst,
|
|
__read_only image2d_t src,
|
|
int coef_matrix_dim,
|
|
__constant float *coef_matrix,
|
|
float div,
|
|
float bias)
|
|
{
|
|
const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
|
|
CLK_ADDRESS_CLAMP_TO_EDGE |
|
|
CLK_FILTER_NEAREST);
|
|
|
|
const int half_matrix_dim = (coef_matrix_dim / 2);
|
|
int2 loc = (int2)(get_global_id(0), get_global_id(1));
|
|
float4 convPix = (float4)(0.0f, 0.0f, 0.0f, 0.0f);
|
|
|
|
for (int conv_i = -half_matrix_dim; conv_i <= half_matrix_dim; conv_i++) {
|
|
for (int conv_j = -half_matrix_dim; conv_j <= half_matrix_dim; conv_j++) {
|
|
float4 px = read_imagef(src, sampler, loc + (int2)(conv_j, conv_i));
|
|
convPix += px * coef_matrix[(conv_i + half_matrix_dim) * coef_matrix_dim +
|
|
(conv_j + half_matrix_dim)];
|
|
}
|
|
}
|
|
float4 dstPix = convPix * div + bias;
|
|
write_imagef(dst, loc, dstPix);
|
|
}
|
|
|
|
|
|
__kernel void sobel_global(__write_only image2d_t dst,
|
|
__read_only image2d_t src,
|
|
float div,
|
|
float bias)
|
|
{
|
|
const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
|
|
CLK_ADDRESS_CLAMP_TO_EDGE |
|
|
CLK_FILTER_NEAREST);
|
|
|
|
int2 loc = (int2)(get_global_id(0), get_global_id(1));
|
|
|
|
float4 sum1 = read_imagef(src, sampler, loc + (int2)(-1,-1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 0,-1)) * -2 +
|
|
read_imagef(src, sampler, loc + (int2)( 1,-1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)(-1, 1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)( 0, 1)) * 2 +
|
|
read_imagef(src, sampler, loc + (int2)( 1, 1)) * 1;
|
|
|
|
float4 sum2 = read_imagef(src, sampler, loc + (int2)(-1,-1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)(-1, 0)) * -2 +
|
|
read_imagef(src, sampler, loc + (int2)(-1, 1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1,-1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1, 0)) * 2 +
|
|
read_imagef(src, sampler, loc + (int2)( 1, 1)) * 1;
|
|
|
|
float4 dstPix = hypot(sum1, sum2) * div + bias;
|
|
write_imagef(dst, loc, dstPix);
|
|
}
|
|
|
|
__kernel void prewitt_global(__write_only image2d_t dst,
|
|
__read_only image2d_t src,
|
|
float div,
|
|
float bias)
|
|
{
|
|
const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
|
|
CLK_ADDRESS_CLAMP_TO_EDGE |
|
|
CLK_FILTER_NEAREST);
|
|
|
|
int2 loc = (int2)(get_global_id(0), get_global_id(1));
|
|
|
|
float4 sum1 = read_imagef(src, sampler, loc + (int2)(-1,-1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)( 0,-1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1,-1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)(-1, 1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 0, 1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1, 1)) * -1;
|
|
|
|
float4 sum2 = read_imagef(src, sampler, loc + (int2)(-1,-1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)(-1, 0)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)(-1, 1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1,-1)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1, 0)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 1, 1)) * -1;
|
|
|
|
float4 dstPix = hypot(sum1, sum2) * div + bias;
|
|
write_imagef(dst, loc, dstPix);
|
|
}
|
|
|
|
__kernel void roberts_global(__write_only image2d_t dst,
|
|
__read_only image2d_t src,
|
|
float div,
|
|
float bias)
|
|
{
|
|
const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
|
|
CLK_ADDRESS_CLAMP_TO_EDGE |
|
|
CLK_FILTER_NEAREST);
|
|
|
|
int2 loc = (int2)(get_global_id(0), get_global_id(1));
|
|
|
|
float4 sum1 = read_imagef(src, sampler, loc + (int2)(-1,-1)) * 1 +
|
|
read_imagef(src, sampler, loc + (int2)( 0,-1)) * -1;
|
|
|
|
|
|
float4 sum2 = read_imagef(src, sampler, loc + (int2)(-1, 0)) * -1 +
|
|
read_imagef(src, sampler, loc + (int2)( 0, 0)) * 1;
|
|
|
|
|
|
float4 dstPix = hypot(sum1, sum2) * div + bias;
|
|
write_imagef(dst, loc, dstPix);
|
|
}
|