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ffmpeg-4.2.2/libavcodec/copy_block.h 2.43 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * 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
   */
  
  #ifndef AVCODEC_COPY_BLOCK_H
  #define AVCODEC_COPY_BLOCK_H
  
  #include <stddef.h>
  #include <stdint.h>
  
  #include "libavutil/intreadwrite.h"
  
  static inline void copy_block2(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
  {
      int i;
      for (i = 0; i < h; i++) {
          AV_COPY16U(dst, src);
          dst += dstStride;
          src += srcStride;
      }
  }
  
  static inline void copy_block4(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
  {
      int i;
      for (i = 0; i < h; i++) {
          AV_COPY32U(dst, src);
          dst += dstStride;
          src += srcStride;
      }
  }
  
  static inline void copy_block8(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
  {
      int i;
      for (i = 0; i < h; i++) {
          AV_COPY64U(dst, src);
          dst += dstStride;
          src += srcStride;
      }
  }
  
  static inline void copy_block9(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
  {
      int i;
      for (i = 0; i < h; i++) {
          AV_COPY64U(dst, src);
          dst[8] = src[8];
          dst   += dstStride;
          src   += srcStride;
      }
  }
  
  static inline void copy_block16(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
  {
      int i;
      for (i = 0; i < h; i++) {
          AV_COPY128U(dst, src);
          dst += dstStride;
          src += srcStride;
      }
  }
  
  static inline void copy_block17(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
  {
      int i;
      for (i = 0; i < h; i++) {
          AV_COPY128U(dst, src);
          dst[16] = src[16];
          dst    += dstStride;
          src    += srcStride;
      }
  }
  
  #endif /* AVCODEC_COPY_BLOCK_H */