libvo/fastmemcpy.h

   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 "config.h"
  23 #include <inttypes.h>
  24 #include <string.h>
  25
  26 #if defined(CONFIG_FASTMEMCPY) && (HAVE_MMX || HAVE_MMX2 || HAVE_AMD3DNOW /* || HAVE_SSE || HAVE_SSE2 */)
  27 #include <stddef.h>
  28
  29 void * fast_memcpy(void * to, const void * from, size_t len);
  30 void * mem2agpcpy(void * to, const void * from, size_t len);
  31
  32 #else
  33 #define mem2agpcpy(a,b,c) memcpy(a,b,c)
  34 #define fast_memcpy(a,b,c) memcpy(a,b,c)
  35 #endif
  36
  37 static inline void * mem2agpcpy_pic(void * dst, const void * src, int bytesPerLine, int height, int dstStride, int srcStride)
  38 {
  39         int i;
  40         void *retval=dst;
  41
  42         if(dstStride == srcStride)
  43         {
  44                 if (srcStride < 0) {
  45                         src = (uint8_t*)src + (height-1)*srcStride;
  46                         dst = (uint8_t*)dst + (height-1)*dstStride;
  47                         srcStride = -srcStride;
  48                 }
  49
  50                 mem2agpcpy(dst, src, srcStride*height);
  51         }
  52         else
  53         {
  54                 for(i=0; i<height; i++)
  55                 {
  56                         mem2agpcpy(dst, src, bytesPerLine);
  57                         src = (uint8_t*)src + srcStride;
  58                         dst = (uint8_t*)dst + dstStride;
  59                 }
  60         }
  61
  62         return retval;
  63 }
  64
  65 #define memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 0)
  66 #define my_memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 1)
  67
  68 /**
  69  * \param limit2width always skip data between end of line and start of next
  70  *                    instead of copying the full block when strides are the same
  71  */
  72 static inline void * memcpy_pic2(void * dst, const void * src,
  73                                  int bytesPerLine, int height,
  74                                  int dstStride, int srcStride, int limit2width)
  75 {
  76         int i;
  77         void *retval=dst;
  78
  79         if(!limit2width && dstStride == srcStride)
  80         {
  81                 if (srcStride < 0) {
  82                         src = (uint8_t*)src + (height-1)*srcStride;
  83                         dst = (uint8_t*)dst + (height-1)*dstStride;
  84                         srcStride = -srcStride;
  85                 }
  86
  87                 fast_memcpy(dst, src, srcStride*height);
  88         }
  89         else
  90         {
  91                 for(i=0; i<height; i++)
  92                 {
  93                         fast_memcpy(dst, src, bytesPerLine);
  94                         src = (uint8_t*)src + srcStride;
  95                         dst = (uint8_t*)dst + dstStride;
  96                 }
  97         }
  98
  99         return retval;
 100 }
 101
 102 #endif /* MPLAYER_FASTMEMCPY_H */