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  1. /*
  2.  * MMX-optimized avg/put pixel routines
  3.  *
  4.  * Copyright (c) 2001 Fabrice Bellard
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #include <stddef.h>
  24. #include <stdint.h>
  25.  
  26. #include "config.h"
  27. #include "dsputil_x86.h"
  28.  
  29. #if HAVE_MMX_INLINE
  30.  
  31. void ff_avg_pixels8_x2_mmx(uint8_t *block, const uint8_t *pixels,
  32.                            ptrdiff_t line_size, int h)
  33. {
  34.     MOVQ_BFE(mm6);
  35.     JUMPALIGN();
  36.     do {
  37.         __asm__ volatile(
  38.             "movq  %1, %%mm0            \n\t"
  39.             "movq  1%1, %%mm1           \n\t"
  40.             "movq  %0, %%mm3            \n\t"
  41.             PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
  42.             PAVGB_MMX(%%mm3, %%mm2, %%mm0, %%mm6)
  43.             "movq  %%mm0, %0            \n\t"
  44.             :"+m"(*block)
  45.             :"m"(*pixels)
  46.             :"memory");
  47.         pixels += line_size;
  48.         block += line_size;
  49.     } while (--h);
  50. }
  51.  
  52. #endif /* HAVE_MMX_INLINE */
  53.