tests/checkasm/fdctdsp.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <string.h>
  20
  21 #include "checkasm.h"
  22
  23 #include "libavcodec/avcodec.h"
  24 #include "libavcodec/fdctdsp.h"
  25
  26 #include "libavutil/common.h"
  27 #include "libavutil/internal.h"
  28 #include "libavutil/mem_internal.h"
  29
  30 static int int16_cmp_off_by_n(const int16_t *ref, const int16_t *test, size_t n, int accuracy)
  31 {
  32     for (size_t i = 0; i < n; i++) {
  33         if (abs(ref[i] - test[i]) > accuracy)
  34             return 1;
  35     }
  36     return 0;
  37 }
  38
  39 static void check_fdct(void)
  40 {
  41     LOCAL_ALIGNED_16(int16_t, block0, [64]);
  42     LOCAL_ALIGNED_16(int16_t, block1, [64]);
  43
  44     AVCodecContext avctx = {
  45         .bits_per_raw_sample = 8,
  46         .dct_algo = FF_DCT_AUTO,
  47     };
  48     FDCTDSPContext h;
  49
  50     ff_fdctdsp_init(&h, &avctx);
  51
  52     if (check_func(h.fdct, "fdct")) {
  53         declare_func(void, int16_t *);
  54         for (int i = 0; i < 64; i++) {
  55             uint8_t r = rnd();
  56             block0[i] = r;
  57             block1[i] = r;
  58         }
  59         call_ref(block0);
  60         call_new(block1);
  61         if (int16_cmp_off_by_n(block0, block1, 64, 2))
  62             fail();
  63         bench_new(block1);
  64     }
  65 }
  66
  67 void checkasm_check_fdctdsp(void)
  68 {
  69     check_fdct();
  70     report("fdctdsp");
  71 }