git.sesse.net Git - ffmpeg/blob - libavcodec/x86/dsputil_init.c

   1 /*
   2  * Copyright (c) 2000, 2001 Fabrice Bellard
   3  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
   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 "config.h"
  23 #include "libavutil/attributes.h"
  24 #include "libavutil/cpu.h"
  25 #include "libavutil/x86/cpu.h"
  26 #include "libavcodec/avcodec.h"
  27 #include "libavcodec/dsputil.h"
  28 #include "libavcodec/simple_idct.h"
  29 #include "dsputil_x86.h"
  30 #include "idct_xvid.h"
  31
  32 static av_cold void dsputil_init_mmx(DSPContext *c, AVCodecContext *avctx,
  33                                      int cpu_flags, unsigned high_bit_depth)
  34 {
  35 #if HAVE_MMX_INLINE
  36     c->put_pixels_clamped        = ff_put_pixels_clamped_mmx;
  37     c->add_pixels_clamped        = ff_add_pixels_clamped_mmx;
  38
  39     if (!high_bit_depth) {
  40         c->draw_edges   = ff_draw_edges_mmx;
  41     }
  42
  43     if (avctx->lowres == 0 && !high_bit_depth) {
  44         switch (avctx->idct_algo) {
  45         case FF_IDCT_AUTO:
  46         case FF_IDCT_SIMPLEAUTO:
  47         case FF_IDCT_SIMPLEMMX:
  48             c->idct_put              = ff_simple_idct_put_mmx;
  49             c->idct_add              = ff_simple_idct_add_mmx;
  50             c->idct                  = ff_simple_idct_mmx;
  51             c->idct_permutation_type = FF_SIMPLE_IDCT_PERM;
  52             break;
  53         case FF_IDCT_XVIDMMX:
  54             c->idct_put              = ff_idct_xvid_mmx_put;
  55             c->idct_add              = ff_idct_xvid_mmx_add;
  56             c->idct                  = ff_idct_xvid_mmx;
  57             break;
  58         }
  59     }
  60
  61 #endif /* HAVE_MMX_INLINE */
  62
  63 #if HAVE_MMX_EXTERNAL
  64     c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmx;
  65 #endif /* HAVE_MMX_EXTERNAL */
  66 }
  67
  68 static av_cold void dsputil_init_mmxext(DSPContext *c, AVCodecContext *avctx,
  69                                         int cpu_flags, unsigned high_bit_depth)
  70 {
  71 #if HAVE_MMXEXT_INLINE
  72     if (!high_bit_depth && avctx->idct_algo == FF_IDCT_XVIDMMX && avctx->lowres == 0) {
  73         c->idct_put = ff_idct_xvid_mmxext_put;
  74         c->idct_add = ff_idct_xvid_mmxext_add;
  75         c->idct     = ff_idct_xvid_mmxext;
  76     }
  77 #endif /* HAVE_MMXEXT_INLINE */
  78 }
  79
  80 static av_cold void dsputil_init_sse2(DSPContext *c, AVCodecContext *avctx,
  81                                       int cpu_flags, unsigned high_bit_depth)
  82 {
  83 #if HAVE_SSE2_INLINE
  84     if (!high_bit_depth && avctx->idct_algo == FF_IDCT_XVIDMMX && avctx->lowres == 0) {
  85         c->idct_put              = ff_idct_xvid_sse2_put;
  86         c->idct_add              = ff_idct_xvid_sse2_add;
  87         c->idct                  = ff_idct_xvid_sse2;
  88         c->idct_permutation_type = FF_SSE2_IDCT_PERM;
  89     }
  90 #endif /* HAVE_SSE2_INLINE */
  91
  92 #if HAVE_SSE2_EXTERNAL
  93     c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2;
  94 #endif /* HAVE_SSE2_EXTERNAL */
  95 }
  96
  97 av_cold void ff_dsputil_init_x86(DSPContext *c, AVCodecContext *avctx,
  98                                  unsigned high_bit_depth)
  99 {
 100     int cpu_flags = av_get_cpu_flags();
 101
 102     if (X86_MMX(cpu_flags))
 103         dsputil_init_mmx(c, avctx, cpu_flags, high_bit_depth);
 104
 105     if (X86_MMXEXT(cpu_flags))
 106         dsputil_init_mmxext(c, avctx, cpu_flags, high_bit_depth);
 107
 108     if (X86_SSE2(cpu_flags))
 109         dsputil_init_sse2(c, avctx, cpu_flags, high_bit_depth);
 110
 111     if (CONFIG_ENCODERS)
 112         ff_dsputilenc_init_mmx(c, avctx, high_bit_depth);
 113 }