libavcodec/copy_block.h
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 /*
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  * This file is part of FFmpeg.
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  *
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  * FFmpeg is free software; you can redistribute it and/or
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  * 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.
  *
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  * FFmpeg is distributed in the hope that it will be useful,
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  * 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
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  * License along with FFmpeg; if not, write to the Free Software
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  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVCODEC_COPY_BLOCK_H
 #define AVCODEC_COPY_BLOCK_H
 
 #include <stdint.h>
 
 #include "libavutil/intreadwrite.h"
 
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 static inline void copy_block2(uint8_t *dst, const uint8_t *src, int dstStride, int 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, int dstStride, int srcStride, int h)
 {
     int i;
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     for (i = 0; i < h; i++) {
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         AV_COPY32U(dst, src);
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         dst += dstStride;
         src += srcStride;
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     }
 }
 
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 static inline void copy_block8(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
 {
     int i;
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     for (i = 0; i < h; i++) {
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         AV_COPY64U(dst, src);
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         dst += dstStride;
         src += srcStride;
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     }
 }
 
 static inline void copy_block9(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
 {
     int i;
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     for (i = 0; i < h; i++) {
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         AV_COPY64U(dst, src);
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         dst[8] = src[8];
         dst   += dstStride;
         src   += srcStride;
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     }
 }
 
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 static inline void copy_block16(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
 {
     int i;
     for (i = 0; i < h; i++) {
         AV_COPY128U(dst, src);
         dst += dstStride;
         src += srcStride;
     }
 }
 
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 static inline void copy_block17(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, int h)
 {
     int i;
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     for (i = 0; i < h; i++) {
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         AV_COPY128U(dst, src);
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         dst[16] = src[16];
         dst    += dstStride;
         src    += srcStride;
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     }
 }
 
 #endif /* AVCODEC_COPY_BLOCK_H */