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  1. /*
  2.  * This file is part of MPlayer.
  3.  *
  4.  * MPlayer is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * MPlayer is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with MPlayer; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #ifndef MPLAYER_FASTMEMCPY_H
  20. #define MPLAYER_FASTMEMCPY_H
  21.  
  22. #include <inttypes.h>
  23. #include <string.h>
  24. #include <stddef.h>
  25.  
  26. void * fast_memcpy(void * to, const void * from, size_t len);
  27. void * mem2agpcpy(void * to, const void * from, size_t len);
  28.  
  29. #if ! defined(CONFIG_FASTMEMCPY) || ! (HAVE_MMX || HAVE_MMX2 || HAVE_AMD3DNOW /* || HAVE_SSE || HAVE_SSE2 */)
  30. #define mem2agpcpy(a,b,c) memcpy(a,b,c)
  31. #define fast_memcpy(a,b,c) memcpy(a,b,c)
  32. #endif
  33.  
  34. static inline void * mem2agpcpy_pic(void * dst, const void * src, int bytesPerLine, int height, int dstStride, int srcStride)
  35. {
  36.     int i;
  37.     void *retval=dst;
  38.  
  39.     if(dstStride == srcStride)
  40.     {
  41.         if (srcStride < 0) {
  42.                 src = (const uint8_t*)src + (height-1)*srcStride;
  43.                 dst = (uint8_t*)dst + (height-1)*dstStride;
  44.                 srcStride = -srcStride;
  45.         }
  46.  
  47.         mem2agpcpy(dst, src, srcStride*height);
  48.     }
  49.     else
  50.     {
  51.         for(i=0; i<height; i++)
  52.         {
  53.             mem2agpcpy(dst, src, bytesPerLine);
  54.             src = (const uint8_t*)src + srcStride;
  55.             dst = (uint8_t*)dst + dstStride;
  56.         }
  57.     }
  58.  
  59.     return retval;
  60. }
  61.  
  62. #define memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 0)
  63. #define my_memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 1)
  64.  
  65. /**
  66.  * \param limit2width always skip data between end of line and start of next
  67.  *                    instead of copying the full block when strides are the same
  68.  */
  69. static inline void * memcpy_pic2(void * dst, const void * src,
  70.                                  int bytesPerLine, int height,
  71.                                  int dstStride, int srcStride, int limit2width)
  72. {
  73.     int i;
  74.     void *retval=dst;
  75.  
  76.     if(!limit2width && dstStride == srcStride)
  77.     {
  78.         if (srcStride < 0) {
  79.                 src = (const uint8_t*)src + (height-1)*srcStride;
  80.                 dst = (uint8_t*)dst + (height-1)*dstStride;
  81.                 srcStride = -srcStride;
  82.         }
  83.  
  84.         fast_memcpy(dst, src, srcStride*height);
  85.     }
  86.     else
  87.     {
  88.         for(i=0; i<height; i++)
  89.         {
  90.             fast_memcpy(dst, src, bytesPerLine);
  91.             src = (const uint8_t*)src + srcStride;
  92.             dst = (uint8_t*)dst + dstStride;
  93.         }
  94.     }
  95.  
  96.     return retval;
  97. }
  98.  
  99. #endif /* MPLAYER_FASTMEMCPY_H */
  100.