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3rdparty/ffmpeg-4.4.4/x264/common/aarch64/deblock-a-common.S 1.69 KB
f244cbd5   Hu Chunming   ffmpeg支持h264编码
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  /*****************************************************************************
   * deblock-a-common.S: aarch64 deblocking
   *****************************************************************************
   * Copyright (C) 2009-2024 x264 project
   *
   * Authors: Mans Rullgard <mans@mansr.com>
   *          Janne Grunau <janne-x264@jannau.net>
   *          David Chen <david.chen@myais.com.cn>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
   *
   * This program is also available under a commercial proprietary license.
   * For more information, contact us at licensing@x264.com.
   *****************************************************************************/
  
  // This file contains the NEON macros that are intended to be used by
  // the SVE/SVE2 functions as well
  
  .macro h264_loop_filter_start
      cmp             w2,  #0
      ldr             w6,  [x4]
      ccmp            w3,  #0, #0, ne
      mov             v24.s[0], w6
      and             w8,  w6,  w6,  lsl #16
      b.eq            1f
      ands            w8,  w8,  w8,  lsl #8
      b.ge            2f
  1:
      ret
  2:
  .endm