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  1. /*
  2.  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
  3.  * Copyright (C) 2005 Nikolaj Poroshin <porosh3@psu.ru>
  4.  * Copyright (c) 2014 Arwa Arif <arwaarif1994@gmail.com>
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or modify
  9.  * it under the terms of the GNU General Public License as published by
  10.  * the Free Software Foundation; either version 2 of the License, or
  11.  * (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16.  * GNU General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU General Public License along
  19.  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  20.  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21.  */
  22.  
  23. #ifndef AVFILTER_FSPP_H
  24. #define AVFILTER_FSPP_H
  25.  
  26. #include "avfilter.h"
  27.  
  28. #define BLOCKSZ 12
  29. #define MAX_LEVEL 5
  30.  
  31. #define DCTSIZE 8
  32. #define DCTSIZE_S "8"
  33.  
  34. #define FIX(x,s)  ((int) ((x) * (1 << s) + 0.5) & 0xffff)
  35. #define C64(x)    ((uint64_t)((x) | (x) << 16)) <<32 | (uint64_t)(x) | (uint64_t)(x) << 16
  36. #define FIX64(x,s)  C64(FIX(x,s))
  37.  
  38. #define MULTIPLY16H(x,k)   (((x) * (k)) >> 16)
  39. #define THRESHOLD(r,x,t)                         \
  40.     if(((unsigned)((x) + t)) > t * 2) r = (x);   \
  41.     else r = 0;
  42. #define DESCALE(x,n)  (((x) + (1 << ((n) - 1))) >> n)
  43.  
  44. typedef int32_t int_simd16_t;
  45. static const int16_t FIX_0_382683433   = FIX(0.382683433, 14);
  46. static const int16_t FIX_0_541196100   = FIX(0.541196100, 14);
  47. static const int16_t FIX_0_707106781   = FIX(0.707106781, 14);
  48. static const int16_t FIX_1_306562965   = FIX(1.306562965, 14);
  49. static const int16_t FIX_1_414213562_A = FIX(1.414213562, 14);
  50. static const int16_t FIX_1_847759065   = FIX(1.847759065, 13);
  51. static const int16_t FIX_2_613125930   = FIX(-2.613125930, 13);
  52. static const int16_t FIX_1_414213562   = FIX(1.414213562, 13);
  53. static const int16_t FIX_1_082392200   = FIX(1.082392200, 13);
  54.  
  55. typedef struct FSPPContext {
  56.     AVClass *class;
  57.     uint64_t threshold_mtx_noq[8 * 2];
  58.     uint64_t threshold_mtx[8 * 2];        //used in both C & MMX (& later SSE2) versions
  59.  
  60.     int log2_count;
  61.     int strength;
  62.     int hsub;
  63.     int vsub;
  64.     int temp_stride;
  65.     int qp;
  66.     int qscale_type;
  67.     int prev_q;
  68.     uint8_t *src;
  69.     int16_t *temp;
  70.     uint8_t *non_b_qp_table;
  71.     int non_b_qp_alloc_size;
  72.     int use_bframe_qp;
  73.  
  74.     void (*store_slice)(uint8_t *dst, int16_t *src,
  75.                         ptrdiff_t dst_stride, ptrdiff_t src_stride,
  76.                         ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale);
  77.  
  78.     void (*store_slice2)(uint8_t *dst, int16_t *src,
  79.                          ptrdiff_t dst_stride, ptrdiff_t src_stride,
  80.                          ptrdiff_t width, ptrdiff_t height, ptrdiff_t log2_scale);
  81.  
  82.     void (*mul_thrmat)(int16_t *thr_adr_noq, int16_t *thr_adr, int q);
  83.  
  84.     void (*column_fidct)(int16_t *thr_adr, int16_t *data,
  85.                          int16_t *output, int cnt);
  86.  
  87.     void (*row_idct)(int16_t *workspace, int16_t *output_adr,
  88.                      ptrdiff_t output_stride, int cnt);
  89.  
  90.     void (*row_fdct)(int16_t *data, const uint8_t *pixels,
  91.                      ptrdiff_t line_size, int cnt);
  92.  
  93. } FSPPContext;
  94.  
  95. void ff_fspp_init_x86(FSPPContext *fspp);
  96.  
  97. #endif /* AVFILTER_FSPP_H */
  98.