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ffmpeg-4.2.2/libavcodec/arm/pixblockdsp_init_arm.c 1.53 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #include <stdint.h>
  
  #include "libavutil/attributes.h"
  #include "libavutil/cpu.h"
  #include "libavutil/arm/cpu.h"
  #include "libavcodec/avcodec.h"
  #include "libavcodec/pixblockdsp.h"
  
  void ff_get_pixels_armv6(int16_t *block, const uint8_t *pixels,
                           ptrdiff_t stride);
  void ff_diff_pixels_armv6(int16_t *block, const uint8_t *s1,
                            const uint8_t *s2, ptrdiff_t stride);
  
  av_cold void ff_pixblockdsp_init_arm(PixblockDSPContext *c,
                                       AVCodecContext *avctx,
                                       unsigned high_bit_depth)
  {
      int cpu_flags = av_get_cpu_flags();
  
      if (have_armv6(cpu_flags)) {
          if (!high_bit_depth)
              c->get_pixels = ff_get_pixels_armv6;
          c->diff_pixels = ff_diff_pixels_armv6;
      }
  }