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  1. /*
  2.  * SIMD-optimized pixel operations
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #include "libavutil/attributes.h"
  22. #include "libavutil/cpu.h"
  23. #include "libavutil/x86/cpu.h"
  24. #include "libavcodec/pixblockdsp.h"
  25.  
  26. void ff_get_pixels_mmx(int16_t *block, const uint8_t *pixels, ptrdiff_t line_size);
  27. void ff_get_pixels_sse2(int16_t *block, const uint8_t *pixels, ptrdiff_t line_size);
  28. void ff_diff_pixels_mmx(int16_t *block, const uint8_t *s1, const uint8_t *s2,
  29.                         int stride);
  30. void ff_diff_pixels_sse2(int16_t *block, const uint8_t *s1, const uint8_t *s2,
  31.                          int stride);
  32.  
  33. av_cold void ff_pixblockdsp_init_x86(PixblockDSPContext *c,
  34.                                      AVCodecContext *avctx,
  35.                                      unsigned high_bit_depth)
  36. {
  37.     int cpu_flags = av_get_cpu_flags();
  38.  
  39.     if (EXTERNAL_MMX(cpu_flags)) {
  40.         if (!high_bit_depth)
  41.             c->get_pixels = ff_get_pixels_mmx;
  42.         c->diff_pixels = ff_diff_pixels_mmx;
  43.     }
  44.  
  45.     if (EXTERNAL_SSE2(cpu_flags)) {
  46.         if (!high_bit_depth)
  47.             c->get_pixels = ff_get_pixels_sse2;
  48.         c->diff_pixels = ff_diff_pixels_sse2;
  49.     }
  50. }
  51.