h264chroma_init.c

   1 /*
   2  * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
   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 "config.h"
  22 #include "libavutil/attributes.h"
  23 #include "libavutil/cpu.h"
  24 #include "libavutil/intreadwrite.h"
  25 #include "libavutil/ppc/cpu.h"
  26 #include "libavutil/ppc/types_altivec.h"
  27 #include "libavutil/ppc/util_altivec.h"
  28 #include "libavcodec/h264chroma.h"
  29
  30 #if HAVE_ALTIVEC
  31 #define PUT_OP_U8_ALTIVEC(d, s, dst) d = s
  32 #define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s)
  33
  34 #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC
  35 #define PREFIX_h264_chroma_mc8_altivec         put_h264_chroma_mc8_altivec
  36 #define PREFIX_h264_chroma_mc8_num             altivec_put_h264_chroma_mc8_num
  37 #include "h264chroma_template.c"
  38 #undef OP_U8_ALTIVEC
  39 #undef PREFIX_h264_chroma_mc8_altivec
  40 #undef PREFIX_h264_chroma_mc8_num
  41
  42 #define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC
  43 #define PREFIX_h264_chroma_mc8_altivec         avg_h264_chroma_mc8_altivec
  44 #define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num
  45 #include "h264chroma_template.c"
  46 #undef OP_U8_ALTIVEC
  47 #undef PREFIX_h264_chroma_mc8_altivec
  48 #undef PREFIX_h264_chroma_mc8_num
  49 #endif /* HAVE_ALTIVEC */
  50
  51 av_cold void ff_h264chroma_init_ppc(H264ChromaContext *c, int bit_depth)
  52 {
  53 #if HAVE_ALTIVEC
  54     const int high_bit_depth = bit_depth > 8;
  55
  56     if (!PPC_ALTIVEC(av_get_cpu_flags()))
  57         return;
  58
  59     if (!high_bit_depth) {
  60         c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
  61         c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
  62     }
  63 #endif /* HAVE_ALTIVEC */
  64 }