libavcodec/x86/pngdsp_init.c

   1 /*
   2  * x86 PNG optimizations.
   3  * Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav 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  * Libav 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 Libav; 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/attributes.h"
  23 #include "libavutil/common.h"
  24 #include "libavutil/x86/cpu.h"
  25 #include "libavcodec/pngdsp.h"
  26
  27 void ff_add_png_paeth_prediction_mmxext(uint8_t *dst, uint8_t *src,
  28                                         uint8_t *top, int w, int bpp);
  29 void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src,
  30                                        uint8_t *top, int w, int bpp);
  31 void ff_add_bytes_l2_mmx (uint8_t *dst, uint8_t *src1,
  32                           uint8_t *src2, int w);
  33 void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1,
  34                           uint8_t *src2, int w);
  35
  36 av_cold void ff_pngdsp_init_x86(PNGDSPContext *dsp)
  37 {
  38     int flags = av_get_cpu_flags();
  39
  40 #if ARCH_X86_32
  41     if (EXTERNAL_MMX(flags))
  42         dsp->add_bytes_l2         = ff_add_bytes_l2_mmx;
  43 #endif
  44     if (EXTERNAL_MMXEXT(flags))
  45         dsp->add_paeth_prediction = ff_add_png_paeth_prediction_mmxext;
  46     if (EXTERNAL_SSE2(flags))
  47         dsp->add_bytes_l2         = ff_add_bytes_l2_sse2;
  48     if (EXTERNAL_SSSE3(flags))
  49         dsp->add_paeth_prediction = ff_add_png_paeth_prediction_ssse3;
  50 }