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 #ifdef CONFIG_FASTMEMCPY
  27 #if HAVE_MMX || HAVE_MMX2 || HAVE_AMD3DNOW \
  28 /*    || HAVE_SSE || HAVE_SSE2 */
  29 #include <stddef.h>
  30
  31 void * fast_memcpy(void * to, const void * from, size_t len);
  32 void * mem2agpcpy(void * to, const void * from, size_t len);
  33
  34 #else /* HAVE_MMX/MMX2/3DNOW/SSE/SSE2 */
  35 #define mem2agpcpy(a,b,c) memcpy(a,b,c)
  36 #define fast_memcpy(a,b,c) memcpy(a,b,c)
  37 #endif
  38
  39 #else /* CONFIG_FASTMEMCPY */
  40 #define mem2agpcpy(a,b,c) memcpy(a,b,c)
  41 #define fast_memcpy(a,b,c) memcpy(a,b,c)
  42 #endif
  43
  44 static inline void * mem2agpcpy_pic(void * dst, const void * src, int bytesPerLine, int height, int dstStride, int srcStride)
  45 {
  46         int i;
  47         void *retval=dst;
  48
  49         if(dstStride == srcStride)
  50         {
  51                 if (srcStride < 0) {
  52                         src = (uint8_t*)src + (height-1)*srcStride;
  53                         dst = (uint8_t*)dst + (height-1)*dstStride;
  54                         srcStride = -srcStride;
  55                 }
  56
  57                 mem2agpcpy(dst, src, srcStride*height);
  58         }
  59         else
  60         {
  61                 for(i=0; i<height; i++)
  62                 {
  63                         mem2agpcpy(dst, src, bytesPerLine);
  64                         src = (uint8_t*)src + srcStride;
  65                         dst = (uint8_t*)dst + dstStride;
  66                 }
  67         }
  68
  69         return retval;
  70 }
  71
  72 #define memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 0)
  73 #define my_memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 1)
  74
  75 /**
  76  * \param limit2width always skip data between end of line and start of next
  77  *                    instead of copying the full block when strides are the same
  78  */
  79 static inline void * memcpy_pic2(void * dst, const void * src,
  80                                  int bytesPerLine, int height,
  81                                  int dstStride, int srcStride, int limit2width)
  82 {
  83         int i;
  84         void *retval=dst;
  85
  86         if(!limit2width && dstStride == srcStride)
  87         {
  88                 if (srcStride < 0) {
  89                         src = (uint8_t*)src + (height-1)*srcStride;
  90                         dst = (uint8_t*)dst + (height-1)*dstStride;
  91                         srcStride = -srcStride;
  92                 }
  93
  94                 fast_memcpy(dst, src, srcStride*height);
  95         }
  96         else
  97         {
  98                 for(i=0; i<height; i++)
  99                 {
 100                         fast_memcpy(dst, src, bytesPerLine);
 101                         src = (uint8_t*)src + srcStride;
 102                         dst = (uint8_t*)dst + dstStride;
 103                 }
 104         }
 105
 106         return retval;
 107 }
 108
 109 #endif /* MPLAYER_FASTMEMCPY_H */