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  1. /*
  2.  * RV30/40 MMX/SSE2 optimizations
  3.  * Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  7.  * FFmpeg is free software; you can redistribute it and/or
  8.  * modify it under the terms of the GNU Lesser General Public
  9.  * License as published by the Free Software Foundation; either
  10.  * version 2.1 of the License, or (at your option) any later version.
  11.  *
  12.  * FFmpeg is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * Lesser General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU Lesser General Public
  18.  * License along with FFmpeg; if not, write to the Free Software
  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20.  */
  21.  
  22. #include "libavutil/cpu.h"
  23. #include "libavutil/x86/asm.h"
  24. #include "libavutil/x86/cpu.h"
  25. #include "libavcodec/rv34dsp.h"
  26.  
  27. void ff_rv34_idct_dc_mmxext(int16_t *block);
  28. void ff_rv34_idct_dc_noround_mmxext(int16_t *block);
  29. void ff_rv34_idct_dc_add_mmx(uint8_t *dst, ptrdiff_t stride, int dc);
  30. void ff_rv34_idct_dc_add_sse4(uint8_t *dst, ptrdiff_t stride, int dc);
  31. void ff_rv34_idct_add_mmxext(uint8_t *dst, ptrdiff_t stride, int16_t *block);
  32.  
  33. av_cold void ff_rv34dsp_init_x86(RV34DSPContext* c)
  34. {
  35.     int cpu_flags = av_get_cpu_flags();
  36.  
  37.     if (EXTERNAL_MMX(cpu_flags))
  38.         c->rv34_idct_dc_add = ff_rv34_idct_dc_add_mmx;
  39.     if (EXTERNAL_MMXEXT(cpu_flags)) {
  40.         c->rv34_inv_transform_dc = ff_rv34_idct_dc_noround_mmxext;
  41.         c->rv34_idct_add         = ff_rv34_idct_add_mmxext;
  42.     }
  43.     if (EXTERNAL_SSE4(cpu_flags))
  44.         c->rv34_idct_dc_add = ff_rv34_idct_dc_add_sse4;
  45. }
  46.