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ffmpeg-4.2.2/libavcodec/hpel_template.c 6.29 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2000, 2001 Fabrice Bellard
   * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
   *
   * 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 "libavutil/intreadwrite.h"
  
  #include "pixels.h"
  
  #include "bit_depth_template.c"
  
  #define DEF_HPEL(OPNAME, OP)                                            \
  static inline void FUNC(OPNAME ## _pixels8_l2)(uint8_t *dst,            \
                                                 const uint8_t *src1,     \
                                                 const uint8_t *src2,     \
                                                 int dst_stride,          \
                                                 int src_stride1,         \
                                                 int src_stride2,         \
                                                 int h)                   \
  {                                                                       \
      int i;                                                              \
      for (i = 0; i < h; i++) {                                           \
          pixel4 a, b;                                                    \
          a = AV_RN4P(&src1[i * src_stride1]);                            \
          b = AV_RN4P(&src2[i * src_stride2]);                            \
          OP(*((pixel4 *) &dst[i * dst_stride]), rnd_avg_pixel4(a, b));   \
          a = AV_RN4P(&src1[i * src_stride1 + 4 * sizeof(pixel)]);        \
          b = AV_RN4P(&src2[i * src_stride2 + 4 * sizeof(pixel)]);        \
          OP(*((pixel4 *) &dst[i * dst_stride + 4 * sizeof(pixel)]),      \
             rnd_avg_pixel4(a, b));                                       \
      }                                                                   \
  }                                                                       \
                                                                          \
  static inline void FUNC(OPNAME ## _pixels4_l2)(uint8_t *dst,            \
                                                 const uint8_t *src1,     \
                                                 const uint8_t *src2,     \
                                                 int dst_stride,          \
                                                 int src_stride1,         \
                                                 int src_stride2,         \
                                                 int h)                   \
  {                                                                       \
      int i;                                                              \
      for (i = 0; i < h; i++) {                                           \
          pixel4 a, b;                                                    \
          a = AV_RN4P(&src1[i * src_stride1]);                            \
          b = AV_RN4P(&src2[i * src_stride2]);                            \
          OP(*((pixel4 *) &dst[i * dst_stride]), rnd_avg_pixel4(a, b));   \
      }                                                                   \
  }                                                                       \
                                                                          \
  static inline void FUNC(OPNAME ## _pixels2_l2)(uint8_t *dst,            \
                                                 const uint8_t *src1,     \
                                                 const uint8_t *src2,     \
                                                 int dst_stride,          \
                                                 int src_stride1,         \
                                                 int src_stride2,         \
                                                 int h)                   \
  {                                                                       \
      int i;                                                              \
      for (i = 0; i < h; i++) {                                           \
          pixel4 a, b;                                                    \
          a = AV_RN2P(&src1[i * src_stride1]);                            \
          b = AV_RN2P(&src2[i * src_stride2]);                            \
          OP(*((pixel2 *) &dst[i * dst_stride]), rnd_avg_pixel4(a, b));   \
      }                                                                   \
  }                                                                       \
                                                                          \
  static inline void FUNC(OPNAME ## _pixels16_l2)(uint8_t *dst,           \
                                                  const uint8_t *src1,    \
                                                  const uint8_t *src2,    \
                                                  int dst_stride,         \
                                                  int src_stride1,        \
                                                  int src_stride2,        \
                                                  int h)                  \
  {                                                                       \
      FUNC(OPNAME ## _pixels8_l2)(dst, src1, src2, dst_stride,            \
                                  src_stride1, src_stride2, h);           \
      FUNC(OPNAME ## _pixels8_l2)(dst  + 8 * sizeof(pixel),               \
                                  src1 + 8 * sizeof(pixel),               \
                                  src2 + 8 * sizeof(pixel),               \
                                  dst_stride, src_stride1,                \
                                  src_stride2, h);                        \
  }                                                                       \
  
  #define op_avg(a, b) a = rnd_avg_pixel4(a, b)
  #define op_put(a, b) a = b
  DEF_HPEL(avg, op_avg)
  DEF_HPEL(put, op_put)
  #undef op_avg
  #undef op_put