text: /*
   * Copyright (c) 2015 Tiancheng "Timothy" Gu
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 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 General Public License for more details.
   *
   * You should have received a copy of the GNU 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 <string.h>
  #include "checkasm.h"
  #include "libavcodec/pixblockdsp.h"
  #include "libavutil/common.h"
  #include "libavutil/internal.h"
  #include "libavutil/intreadwrite.h"
  
  #define BUF_UNITS 8
  #define BUF_SIZE (BUF_UNITS * 128 + BUF_UNITS)
  
  #define randomize_buffers()                 \
      do {                                    \
          int i;                              \
          for (i = 0; i < BUF_SIZE; i += 4) { \
              uint32_t r = rnd();             \
              AV_WN32A(src10 + i, r);         \
              AV_WN32A(src11 + i, r);         \
              r = rnd();                      \
              AV_WN32A(src20 + i, r);         \
              AV_WN32A(src21 + i, r);         \
              r = rnd();                      \
              AV_WN32A(dst0_ + i, r);         \
              AV_WN32A(dst1_ + i, r);         \
          }                                   \
      } while (0)
  
  #define check_get_pixels(type)                                                             \
      do {                                                                                   \
          int i;                                                                             \
          declare_func_emms(AV_CPU_FLAG_MMX, void, int16_t *block, const uint8_t *pixels, ptrdiff_t line_size);    \
                                                                                             \
          for (i = 0; i < BUF_UNITS; i++) {                                              \
              int src_offset = i * 64 * sizeof(type) + i; /* Test various alignments */      \
              int dst_offset = i * 64; /* dst must be aligned */                             \
              randomize_buffers();                                                           \
              call_ref(dst0 + dst_offset, src10 + src_offset, 8);                            \
              call_new(dst1 + dst_offset, src11 + src_offset, 8);                            \
              if (memcmp(src10, src11, BUF_SIZE)|| memcmp(dst0, dst1, BUF_SIZE)) \
                  fail();                                                                    \
              bench_new(dst1 + dst_offset, src11 + src_offset, 8);                           \
          }                                                                                  \
      } while (0)
  
  #define check_diff_pixels(type)                                                            \
      do {                                                                                   \
          int i;                                                                             \
          declare_func_emms(AV_CPU_FLAG_MMX, void, int16_t *av_restrict block, const uint8_t *s1, const uint8_t *s2, int stride); \
                                                                                             \
          for (i = 0; i < BUF_UNITS; i++) {                                              \
              int src_offset = i * 64 * sizeof(type) + i; /* Test various alignments */      \
              int dst_offset = i * 64; /* dst must be aligned */                             \
              randomize_buffers();                                                           \
              call_ref(dst0 + dst_offset, src10 + src_offset, src20 + src_offset, 8);        \
              call_new(dst1 + dst_offset, src11 + src_offset, src21 + src_offset, 8);        \
              if (memcmp(src10, src11, BUF_SIZE) || memcmp(src20, src21, BUF_SIZE) || memcmp(dst0, dst1, BUF_SIZE)) \
                  fail();                                                                    \
              bench_new(dst1 + dst_offset, src11 + src_offset, src21 + src_offset, 8);       \
          }                                                                                  \
      } while (0)
  
  void checkasm_check_pixblockdsp(void)
  {
      LOCAL_ALIGNED_16(uint8_t, src10, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, src11, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, src20, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, src21, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, dst0_, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, dst1_, [BUF_SIZE]);
      uint16_t *dst0 = (uint16_t *)dst0_;
      uint16_t *dst1 = (uint16_t *)dst1_;
      PixblockDSPContext h;
      AVCodecContext avctx = {
          .bits_per_raw_sample = 8,
      };
  
      ff_pixblockdsp_init(&h, &avctx);
  
      if (check_func(h.get_pixels, "get_pixels"))
          check_get_pixels(uint8_t);
  
      report("get_pixels");
  
      if (check_func(h.diff_pixels, "diff_pixels"))
          check_diff_pixels(uint8_t);
  
      report("diff_pixels");
  }
  