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https://github.com/FFmpeg/FFmpeg.git
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1ea3650823
They do the same. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/*
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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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#include "libavfilter/vf_nlmeans.c"
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static void display_integral(const uint32_t *ii, int w, int h, int lz_32)
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{
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++)
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printf(" %7x", ii[y*lz_32 + x]);
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printf("\n");
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}
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printf("---------------\n");
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}
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int main(void)
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{
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int ret = 0, xoff, yoff;
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uint32_t *ii_start;
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uint32_t *ii_start2;
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NLMeansDSPContext dsp = {0};
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// arbitrary test source of size 6x5 and linesize=8
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const int w = 6, h = 5, lz = 8;
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static const uint8_t src[] = {
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0xb0, 0x71, 0xfb, 0xd8, 0x01, 0xd9, /***/ 0x01, 0x02,
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0x51, 0x8e, 0x41, 0x0f, 0x84, 0x58, /***/ 0x03, 0x04,
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0xc7, 0x8d, 0x07, 0x70, 0x5c, 0x47, /***/ 0x05, 0x06,
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0x09, 0x4e, 0xfc, 0x74, 0x8f, 0x9a, /***/ 0x07, 0x08,
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0x60, 0x8e, 0x20, 0xaa, 0x95, 0x7d, /***/ 0x09, 0x0a,
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};
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const int e = 3;
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const int ii_w = w+e*2, ii_h = h+e*2;
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// align to 4 the linesize, "+1" is for the space of the left 0-column
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const int ii_lz_32 = ((ii_w + 1) + 3) & ~3;
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// "+1" is for the space of the top 0-line
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uint32_t *ii = av_calloc(ii_h + 1, ii_lz_32 * sizeof(*ii));
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uint32_t *ii2 = av_calloc(ii_h + 1, ii_lz_32 * sizeof(*ii2));
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if (!ii || !ii2)
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return -1;
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ii_start = ii + ii_lz_32 + 1; // skip top 0-line and left 0-column
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ii_start2 = ii2 + ii_lz_32 + 1; // skip top 0-line and left 0-column
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ff_nlmeans_init(&dsp);
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for (yoff = -e; yoff <= e; yoff++) {
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for (xoff = -e; xoff <= e; xoff++) {
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printf("xoff=%d yoff=%d\n", xoff, yoff);
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compute_ssd_integral_image(&dsp, ii_start, ii_lz_32,
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src, lz, xoff, yoff, e, w, h);
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display_integral(ii_start, ii_w, ii_h, ii_lz_32);
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compute_unsafe_ssd_integral_image(ii_start2, ii_lz_32,
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0, 0,
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src, lz,
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xoff, yoff, e, w, h,
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ii_w, ii_h);
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display_integral(ii_start2, ii_w, ii_h, ii_lz_32);
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if (memcmp(ii, ii2, (ii_h+1) * ii_lz_32 * sizeof(*ii))) {
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printf("Integral mismatch\n");
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ret = 1;
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goto end;
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}
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}
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}
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end:
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av_freep(&ii);
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av_freep(&ii2);
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return ret;
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}
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