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ffmpeg-4.2.2/libavcodec/h264chroma.c 2.15 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 "config.h"
  #include "libavutil/attributes.h"
  #include "h264chroma.h"
  
  #define BIT_DEPTH 8
  #include "h264chroma_template.c"
  #undef BIT_DEPTH
  
  #define BIT_DEPTH 16
  #include "h264chroma_template.c"
  #undef BIT_DEPTH
  
  #define SET_CHROMA(depth)                                                   \
      c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_ ## depth ## _c; \
      c->put_h264_chroma_pixels_tab[1] = put_h264_chroma_mc4_ ## depth ## _c; \
      c->put_h264_chroma_pixels_tab[2] = put_h264_chroma_mc2_ ## depth ## _c; \
      c->put_h264_chroma_pixels_tab[3] = put_h264_chroma_mc1_ ## depth ## _c; \
      c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_ ## depth ## _c; \
      c->avg_h264_chroma_pixels_tab[1] = avg_h264_chroma_mc4_ ## depth ## _c; \
      c->avg_h264_chroma_pixels_tab[2] = avg_h264_chroma_mc2_ ## depth ## _c; \
      c->avg_h264_chroma_pixels_tab[3] = avg_h264_chroma_mc1_ ## depth ## _c; \
  
  av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
  {
      if (bit_depth > 8 && bit_depth <= 16) {
          SET_CHROMA(16);
      } else {
          SET_CHROMA(8);
      }
  
      if (ARCH_AARCH64)
          ff_h264chroma_init_aarch64(c, bit_depth);
      if (ARCH_ARM)
          ff_h264chroma_init_arm(c, bit_depth);
      if (ARCH_PPC)
          ff_h264chroma_init_ppc(c, bit_depth);
      if (ARCH_X86)
          ff_h264chroma_init_x86(c, bit_depth);
      if (ARCH_MIPS)
          ff_h264chroma_init_mips(c, bit_depth);
  }