| /* |
| * 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 "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; |
| |
| // arbitrary test source of size 6x4 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_mallocz_array(ii_h + 1, ii_lz_32 * sizeof(*ii)); |
| uint32_t *ii2 = av_mallocz_array(ii_h + 1, ii_lz_32 * sizeof(*ii2)); |
| |
| uint32_t *ii_start = ii + ii_lz_32 + 1; // skip top 0-line and left 0-column |
| uint32_t *ii_start2 = ii2 + ii_lz_32 + 1; // skip top 0-line and left 0-column |
| |
| if (!ii || !ii2) |
| return -1; |
| |
| for (yoff = -e; yoff <= e; yoff++) { |
| for (xoff = -e; xoff <= e; xoff++) { |
| printf("xoff=%d yoff=%d\n", xoff, yoff); |
| |
| compute_ssd_integral_image(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; |
| } |