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ffmpeg-4.2.2/libavfilter/vf_fspp.h 3.2 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
   * Copyright (C) 2005 Nikolaj Poroshin <porosh3@psu.ru>
   * Copyright (c) 2014 Arwa Arif <arwaarif1994@gmail.com>
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg 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.
   *
   * 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 General Public License for more details.
   *
   * You should have received a copy of the GNU 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.
   */
  
  #ifndef AVFILTER_FSPP_H
  #define AVFILTER_FSPP_H
  
  #include "avfilter.h"
  
  #define BLOCKSZ 12
  #define MAX_LEVEL 5
  
  #define DCTSIZE 8
  #define DCTSIZE_S "8"
  
  #define FIX(x,s)  ((x) * (1 << s) + 0.5)
  
  #define MULTIPLY16H(x,k)   (((x) * (k)) >> 16)
  #define THRESHOLD(r,x,t)                         \
      if(((unsigned)((x) + t)) > t * 2) r = (x);   \
      else r = 0;
  #define DESCALE(x,n)  (((x) + (1 << ((n) - 1))) >> n)
  
  typedef int32_t int_simd16_t;
  static const int16_t FIX_0_382683433   = FIX(0.382683433, 14);
  static const int16_t FIX_0_541196100   = FIX(0.541196100, 14);
  static const int16_t FIX_0_707106781   = FIX(M_SQRT1_2  , 14);
  static const int16_t FIX_1_306562965   = FIX(1.306562965, 14);
  static const int16_t FIX_1_414213562_A = FIX(M_SQRT2    , 14);
  static const int16_t FIX_1_847759065   = FIX(1.847759065, 13);
  static const int16_t FIX_2_613125930   = FIX(-2.613125930, 13);
  static const int16_t FIX_1_414213562   = FIX(M_SQRT2    , 13);
  static const int16_t FIX_1_082392200   = FIX(1.082392200, 13);
  
  typedef struct FSPPContext {
      AVClass *class;
      uint64_t threshold_mtx_noq[8 * 2];
      uint64_t threshold_mtx[8 * 2];        //used in both C & MMX (& later SSE2) versions
  
      int log2_count;
      int strength;
      int hsub;
      int vsub;
      int temp_stride;
      int qp;
      int qscale_type;
      int prev_q;
      uint8_t *src;
      int16_t *temp;
      uint8_t *non_b_qp_table;
      int non_b_qp_alloc_size;
      int use_bframe_qp;
  
      void (*store_slice)(uint8_t *dst, int16_t *src,
                          ptrdiff_t dst_stride, ptrdiff_t src_stride,
                          ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale);
  
      void (*store_slice2)(uint8_t *dst, int16_t *src,
                           ptrdiff_t dst_stride, ptrdiff_t src_stride,
                           ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale);
  
      void (*mul_thrmat)(int16_t *thr_adr_noq, int16_t *thr_adr, int q);
  
      void (*column_fidct)(int16_t *thr_adr, int16_t *data,
                           int16_t *output, int cnt);
  
      void (*row_idct)(int16_t *workspace, int16_t *output_adr,
                       ptrdiff_t output_stride, int cnt);
  
      void (*row_fdct)(int16_t *data, const uint8_t *pixels,
                       ptrdiff_t line_size, int cnt);
  
  } FSPPContext;
  
  void ff_fspp_init_x86(FSPPContext *fspp);
  
  #endif /* AVFILTER_FSPP_H */