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  1. /*
  2.  * ARM NEON optimised H.264 chroma functions
  3.  * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
  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 <stdint.h>
  23.  
  24. #include "libavutil/attributes.h"
  25. #include "libavutil/cpu.h"
  26. #include "libavutil/aarch64/cpu.h"
  27. #include "libavcodec/h264chroma.h"
  28.  
  29. #include "config.h"
  30.  
  31. void ff_put_h264_chroma_mc8_neon(uint8_t *dst, uint8_t *src, int stride,
  32.                                  int h, int x, int y);
  33. void ff_put_h264_chroma_mc4_neon(uint8_t *dst, uint8_t *src, int stride,
  34.                                  int h, int x, int y);
  35. void ff_put_h264_chroma_mc2_neon(uint8_t *dst, uint8_t *src, int stride,
  36.                                  int h, int x, int y);
  37.  
  38. void ff_avg_h264_chroma_mc8_neon(uint8_t *dst, uint8_t *src, int stride,
  39.                                  int h, int x, int y);
  40. void ff_avg_h264_chroma_mc4_neon(uint8_t *dst, uint8_t *src, int stride,
  41.                                  int h, int x, int y);
  42. void ff_avg_h264_chroma_mc2_neon(uint8_t *dst, uint8_t *src, int stride,
  43.                                  int h, int x, int y);
  44.  
  45. av_cold void ff_h264chroma_init_aarch64(H264ChromaContext *c, int bit_depth)
  46. {
  47.     const int high_bit_depth = bit_depth > 8;
  48.     int cpu_flags = av_get_cpu_flags();
  49.  
  50.     if (have_neon(cpu_flags) && !high_bit_depth) {
  51.         c->put_h264_chroma_pixels_tab[0] = ff_put_h264_chroma_mc8_neon;
  52.         c->put_h264_chroma_pixels_tab[1] = ff_put_h264_chroma_mc4_neon;
  53.         c->put_h264_chroma_pixels_tab[2] = ff_put_h264_chroma_mc2_neon;
  54.  
  55.         c->avg_h264_chroma_pixels_tab[0] = ff_avg_h264_chroma_mc8_neon;
  56.         c->avg_h264_chroma_pixels_tab[1] = ff_avg_h264_chroma_mc4_neon;
  57.         c->avg_h264_chroma_pixels_tab[2] = ff_avg_h264_chroma_mc2_neon;
  58.     }
  59. }
  60.