libpostproc/postprocess_internal.h

   1 /*
   2  * Copyright (C) 2001-2002 Michael Niedermayer (michaelni@gmx.at)
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file postprocess_internal.h
  23  * internal api header.
  24  */
  25
  26 #ifndef FFMPEG_POSTPROCESS_INTERNAL_H
  27 #define FFMPEG_POSTPROCESS_INTERNAL_H
  28
  29 #include "libavutil/avutil.h"
  30 #include "postprocess.h"
  31
  32 #define V_DEBLOCK       0x01
  33 #define H_DEBLOCK       0x02
  34 #define DERING          0x04
  35 #define LEVEL_FIX       0x08 ///< Brightness & Contrast
  36
  37 #define LUM_V_DEBLOCK   V_DEBLOCK               //   1
  38 #define LUM_H_DEBLOCK   H_DEBLOCK               //   2
  39 #define CHROM_V_DEBLOCK (V_DEBLOCK<<4)          //  16
  40 #define CHROM_H_DEBLOCK (H_DEBLOCK<<4)          //  32
  41 #define LUM_DERING      DERING                  //   4
  42 #define CHROM_DERING    (DERING<<4)             //  64
  43 #define LUM_LEVEL_FIX   LEVEL_FIX               //   8
  44 #define CHROM_LEVEL_FIX (LEVEL_FIX<<4)          // 128 (not implemented yet)
  45
  46 // Experimental vertical filters
  47 #define V_X1_FILTER     0x0200                  // 512
  48 #define V_A_DEBLOCK     0x0400
  49
  50 // Experimental horizontal filters
  51 #define H_X1_FILTER     0x2000                  // 8192
  52 #define H_A_DEBLOCK     0x4000
  53
  54 /// select between full y range (255-0) or standart one (234-16)
  55 #define FULL_Y_RANGE    0x8000                  // 32768
  56
  57 //Deinterlacing Filters
  58 #define LINEAR_IPOL_DEINT_FILTER        0x10000 // 65536
  59 #define LINEAR_BLEND_DEINT_FILTER       0x20000 // 131072
  60 #define CUBIC_BLEND_DEINT_FILTER        0x8000  // (not implemented yet)
  61 #define CUBIC_IPOL_DEINT_FILTER         0x40000 // 262144
  62 #define MEDIAN_DEINT_FILTER             0x80000 // 524288
  63 #define FFMPEG_DEINT_FILTER             0x400000
  64 #define LOWPASS5_DEINT_FILTER           0x800000
  65
  66 #define TEMP_NOISE_FILTER               0x100000
  67 #define FORCE_QUANT                     0x200000
  68
  69 //use if you want a faster postprocessing code
  70 //cannot differentiate between chroma & luma filters (both on or both off)
  71 //obviously the -pp option on the command line has no effect except turning the here selected
  72 //filters on
  73 //#define COMPILE_TIME_MODE 0x77
  74
  75 static inline int CLIP(int a){
  76     if(a&256) return ((a)>>31)^(-1);
  77     else      return a;
  78 }
  79 /**
  80  * Postprocessng filter.
  81  */
  82 struct PPFilter{
  83     const char *shortName;
  84     const char *longName;
  85     int chromDefault;       ///< is chrominance filtering on by default if this filter is manually activated
  86     int minLumQuality;      ///< minimum quality to turn luminance filtering on
  87     int minChromQuality;    ///< minimum quality to turn chrominance filtering on
  88     int mask;               ///< Bitmask to turn this filter on
  89 };
  90
  91 /**
  92  * Postprocessng mode.
  93  */
  94 typedef struct PPMode{
  95     int lumMode;                    ///< acivates filters for luminance
  96     int chromMode;                  ///< acivates filters for chrominance
  97     int error;                      ///< non zero on error
  98
  99     int minAllowedY;                ///< for brigtness correction
 100     int maxAllowedY;                ///< for brihtness correction
 101     float maxClippedThreshold;      ///< amount of "black" u r willing to loose to get a brightness corrected picture
 102
 103     int maxTmpNoise[3];             ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
 104
 105     int baseDcDiff;
 106     int flatnessThreshold;
 107
 108     int forcedQuant;                ///< quantizer if FORCE_QUANT is used
 109 } PPMode;
 110
 111 /**
 112  * postprocess context.
 113  */
 114 typedef struct PPContext{
 115     /**
 116      * info on struct for av_log
 117      */
 118     const AVClass *av_class;
 119
 120     uint8_t *tempBlocks; ///<used for the horizontal code
 121
 122     /**
 123      * luma histogram.
 124      * we need 64bit here otherwise we'll going to have a problem
 125      * after watching a black picture for 5 hours
 126      */
 127     uint64_t *yHistogram;
 128
 129     DECLARE_ALIGNED(8, uint64_t, packedYOffset);
 130     DECLARE_ALIGNED(8, uint64_t, packedYScale);
 131
 132     /** Temporal noise reducing buffers */
 133     uint8_t *tempBlurred[3];
 134     int32_t *tempBlurredPast[3];
 135
 136     /** Temporary buffers for handling the last row(s) */
 137     uint8_t *tempDst;
 138     uint8_t *tempSrc;
 139
 140     uint8_t *deintTemp;
 141
 142     DECLARE_ALIGNED(8, uint64_t, pQPb);
 143     DECLARE_ALIGNED(8, uint64_t, pQPb2);
 144
 145     DECLARE_ALIGNED(8, uint64_t, mmxDcOffset[64]);
 146     DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold[64]);
 147
 148     QP_STORE_T *stdQPTable;       ///< used to fix MPEG2 style qscale
 149     QP_STORE_T *nonBQPTable;
 150     QP_STORE_T *forcedQPTable;
 151
 152     int QP;
 153     int nonBQP;
 154
 155     int frameNum;
 156
 157     int cpuCaps;
 158
 159     int qpStride; ///<size of qp buffers (needed to realloc them if needed)
 160     int stride;   ///<size of some buffers (needed to realloc them if needed)
 161
 162     int hChromaSubSample;
 163     int vChromaSubSample;
 164
 165     PPMode ppMode;
 166 } PPContext;
 167
 168
 169 static inline void linecpy(void *dest, const void *src, int lines, int stride) {
 170     if (stride > 0) {
 171         memcpy(dest, src, lines*stride);
 172     } else {
 173         memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);
 174     }
 175 }
 176
 177 #endif /* FFMPEG_POSTPROCESS_INTERNAL_H */