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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #include "libavutil/attributes.h"
  20. #include "libavutil/cpu.h"
  21. #include "libavutil/x86/cpu.h"
  22. #include "libavcodec/avcodec.h"
  23. #include "libavcodec/fdctdsp.h"
  24. #include "fdct.h"
  25.  
  26. av_cold void ff_fdctdsp_init_x86(FDCTDSPContext *c, AVCodecContext *avctx,
  27.                                  unsigned high_bit_depth)
  28. {
  29.     int cpu_flags = av_get_cpu_flags();
  30.     const int dct_algo = avctx->dct_algo;
  31.  
  32.     if (!high_bit_depth) {
  33.         if ((dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX)) {
  34.             if (INLINE_MMX(cpu_flags))
  35.                 c->fdct = ff_fdct_mmx;
  36.  
  37.             if (INLINE_MMXEXT(cpu_flags))
  38.                 c->fdct = ff_fdct_mmxext;
  39.  
  40.             if (INLINE_SSE2(cpu_flags))
  41.                 c->fdct = ff_fdct_sse2;
  42.         }
  43.     }
  44. }
  45.