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/*
* 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
*/
#include "libavutil/mem.h"
#include "libavfilter/vf_nlmeans.c"
static void display_integral(const uint32_t *ii, int w, int h, int lz_32)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++)
printf(" %7x", ii[y*lz_32 + x]);
printf("\n");
}
printf("---------------\n");
}
int main(void)
{
int ret = 0, xoff, yoff;
uint32_t *ii_start;
uint32_t *ii_start2;
NLMeansDSPContext dsp = {0};
// arbitrary test source of size 6x5 and linesize=8
const int w = 6, h = 5, lz = 8;
static const uint8_t src[] = {
0xb0, 0x71, 0xfb, 0xd8, 0x01, 0xd9, /***/ 0x01, 0x02,
0x51, 0x8e, 0x41, 0x0f, 0x84, 0x58, /***/ 0x03, 0x04,
0xc7, 0x8d, 0x07, 0x70, 0x5c, 0x47, /***/ 0x05, 0x06,
0x09, 0x4e, 0xfc, 0x74, 0x8f, 0x9a, /***/ 0x07, 0x08,
0x60, 0x8e, 0x20, 0xaa, 0x95, 0x7d, /***/ 0x09, 0x0a,
};
const int e = 3;
const int ii_w = w+e*2, ii_h = h+e*2;
// align to 4 the linesize, "+1" is for the space of the left 0-column
const int ii_lz_32 = ((ii_w + 1) + 3) & ~3;
// "+1" is for the space of the top 0-line
uint32_t *ii = av_calloc(ii_h + 1, ii_lz_32 * sizeof(*ii));
uint32_t *ii2 = av_calloc(ii_h + 1, ii_lz_32 * sizeof(*ii2));
if (!ii || !ii2)
return -1;
ii_start = ii + ii_lz_32 + 1; // skip top 0-line and left 0-column
ii_start2 = ii2 + ii_lz_32 + 1; // skip top 0-line and left 0-column
ff_nlmeans_init(&dsp);
for (yoff = -e; yoff <= e; yoff++) {
for (xoff = -e; xoff <= e; xoff++) {
printf("xoff=%d yoff=%d\n", xoff, yoff);
compute_ssd_integral_image(&dsp, ii_start, ii_lz_32,
src, lz, xoff, yoff, e, w, h);
display_integral(ii_start, ii_w, ii_h, ii_lz_32);
compute_unsafe_ssd_integral_image(ii_start2, ii_lz_32,
0, 0,
src, lz,
xoff, yoff, e, w, h,
ii_w, ii_h);
display_integral(ii_start2, ii_w, ii_h, ii_lz_32);
if (memcmp(ii, ii2, (ii_h+1) * ii_lz_32 * sizeof(*ii))) {
printf("Integral mismatch\n");
ret = 1;
goto end;
}
}
}
end:
av_freep(&ii);
av_freep(&ii2);
return ret;
}
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