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ffmpeg-4.2.2/libavcodec/cavsdata.c 2.63 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
   * Copyright (c) 2006  Stefan Gehrer <stefan.gehrer@gmx.de>
   *
   * 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 "cavs.h"
  
  const uint8_t ff_cavs_partition_flags[30] = {
    0,                                 //I_8X8
    0,                                 //P_SKIP
    0,                                 //P_16X16
                        SPLITH,        //P_16X8
                               SPLITV, //P_8X16
                        SPLITH|SPLITV, //P_8X8
                        SPLITH|SPLITV, //B_SKIP
                        SPLITH|SPLITV, //B_DIRECT
    0,                                 //B_FWD_16X16
    0,                                 //B_BWD_16X16
    0,                                 //B_SYM_16X16
    FWD0|FWD1          |SPLITH,
    FWD0|FWD1                 |SPLITV,
    BWD0|BWD1          |SPLITH,
    BWD0|BWD1                 |SPLITV,
    FWD0|BWD1          |SPLITH,
    FWD0|BWD1                 |SPLITV,
    BWD0|FWD1          |SPLITH,
    BWD0|FWD1                 |SPLITV,
    FWD0|FWD1     |SYM1|SPLITH,
    FWD0|FWD1     |SYM1       |SPLITV,
    BWD0|FWD1     |SYM1|SPLITH,
    BWD0|FWD1     |SYM1       |SPLITV,
    FWD0|FWD1|SYM0     |SPLITH,
    FWD0|FWD1|SYM0            |SPLITV,
    FWD0|BWD1|SYM0     |SPLITH,
    FWD0|BWD1|SYM0            |SPLITV,
    FWD0|FWD1|SYM0|SYM1|SPLITH,
    FWD0|FWD1|SYM0|SYM1       |SPLITV,
                        SPLITH|SPLITV, //B_8X8 = 29
  };
  
  const uint8_t ff_cavs_chroma_qp[64] = {
     0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
    16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
    32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 42, 43, 43, 44, 44,
    45, 45, 46, 46, 47, 47, 48, 48, 48, 49, 49, 49, 50, 50, 50, 51
  };
  
  /** mark block as "no prediction from this direction"
      e.g. forward motion vector in BWD partition */
  const cavs_vector ff_cavs_dir_mv   = {0,0,1,REF_DIR};
  
  /** mark block as using intra prediction */
  const cavs_vector ff_cavs_intra_mv = {0,0,1,REF_INTRA};