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ffmpeg-4.2.2/tests/checkasm/bswapdsp.c 3.21 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2015 Henrik Gramner
   *
   * 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/bswapdsp.h"
  #include "libavutil/common.h"
  #include "libavutil/internal.h"
  #include "libavutil/intreadwrite.h"
  
  #define BUF_SIZE 512
  
  #define randomize_buffers()                 \
      do {                                    \
          int i;                              \
          for (i = 0; i < BUF_SIZE; i += 4) { \
              uint32_t r = rnd();             \
              AV_WN32A(src0 + i, r);          \
              AV_WN32A(src1 + i, r);          \
              r = rnd();                      \
              AV_WN32A(dst0 + i, r);          \
              AV_WN32A(dst1 + i, r);          \
          }                                   \
      } while (0)
  
  #define check_bswap(type)                                                                  \
      do {                                                                                   \
          int w;                                                                             \
          declare_func(void, type *dst, const type *src, int w);                             \
                                                                                             \
          for (w = 0; w < BUF_SIZE / sizeof(type); w++) {                                    \
              int offset = (BUF_SIZE / sizeof(type) - w) & 15; /* Test various alignments */ \
              randomize_buffers();                                                           \
              call_ref((type *)dst0 + offset, (type *)src0 + offset, w);                     \
              call_new((type *)dst1 + offset, (type *)src1 + offset, w);                     \
              if (memcmp(src0, src1, BUF_SIZE) || memcmp(dst0, dst1, BUF_SIZE))              \
                  fail();                                                                    \
              bench_new((type *)dst1 + offset, (type *)src1 + offset, w);                    \
          }                                                                                  \
      } while (0)
  
  void checkasm_check_bswapdsp(void)
  {
      LOCAL_ALIGNED_16(uint8_t, src0, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, src1, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, dst0, [BUF_SIZE]);
      LOCAL_ALIGNED_16(uint8_t, dst1, [BUF_SIZE]);
      BswapDSPContext h;
  
      ff_bswapdsp_init(&h);
  
      if (check_func(h.bswap_buf, "bswap_buf"))
          check_bswap(uint32_t);
  
      if (check_func(h.bswap16_buf, "bswap16_buf"))
          check_bswap(uint16_t);
  
      report("bswap");
  }