libavcodec/x86/pixblockdsp_init.c

   1 /*
   2  * SIMD-optimized pixel operations
   3  *
   4  * This file is part of Libav.
   5  *
   6  * Libav 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  * Libav 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 Libav; 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 stride);
  27 void ff_get_pixels_sse2(int16_t *block, const uint8_t *pixels, ptrdiff_t stride);
  28 void ff_diff_pixels_mmx(int16_t *block, const uint8_t *s1, const uint8_t *s2,
  29                         ptrdiff_t stride);
  30
  31 av_cold void ff_pixblockdsp_init_x86(PixblockDSPContext *c,
  32                                      AVCodecContext *avctx,
  33                                      unsigned high_bit_depth)
  34 {
  35     int cpu_flags = av_get_cpu_flags();
  36
  37     if (EXTERNAL_MMX(cpu_flags)) {
  38         if (!high_bit_depth)
  39             c->get_pixels = ff_get_pixels_mmx;
  40         c->diff_pixels = ff_diff_pixels_mmx;
  41     }
  42
  43     if (EXTERNAL_SSE2(cpu_flags)) {
  44         if (!high_bit_depth)
  45             c->get_pixels = ff_get_pixels_sse2;
  46     }
  47 }