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 libpostproc/postprocess_internal.h
  23  * internal api header.
  24  */
  25
  26 #ifndef POSTPROC_POSTPROCESS_INTERNAL_H
  27 #define POSTPROC_POSTPROCESS_INTERNAL_H
  28
  29 #include <string.h>
  30 #include "libavutil/avutil.h"
  31 #include "postprocess.h"
  32
  33 #define V_DEBLOCK       0x01
  34 #define H_DEBLOCK       0x02
  35 #define DERING          0x04
  36 #define LEVEL_FIX       0x08 ///< Brightness & Contrast
  37
  38 #define LUM_V_DEBLOCK   V_DEBLOCK               //   1
  39 #define LUM_H_DEBLOCK   H_DEBLOCK               //   2
  40 #define CHROM_V_DEBLOCK (V_DEBLOCK<<4)          //  16
  41 #define CHROM_H_DEBLOCK (H_DEBLOCK<<4)          //  32
  42 #define LUM_DERING      DERING                  //   4
  43 #define CHROM_DERING    (DERING<<4)             //  64
  44 #define LUM_LEVEL_FIX   LEVEL_FIX               //   8
  45 #define CHROM_LEVEL_FIX (LEVEL_FIX<<4)          // 128 (not implemented yet)
  46
  47 // Experimental vertical filters
  48 #define V_X1_FILTER     0x0200                  // 512
  49 #define V_A_DEBLOCK     0x0400
  50
  51 // Experimental horizontal filters
  52 #define H_X1_FILTER     0x2000                  // 8192
  53 #define H_A_DEBLOCK     0x4000
  54
  55 /// select between full y range (255-0) or standart one (234-16)
  56 #define FULL_Y_RANGE    0x8000                  // 32768
  57
  58 //Deinterlacing Filters
  59 #define LINEAR_IPOL_DEINT_FILTER        0x10000 // 65536
  60 #define LINEAR_BLEND_DEINT_FILTER       0x20000 // 131072
  61 #define CUBIC_BLEND_DEINT_FILTER        0x8000  // (not implemented yet)
  62 #define CUBIC_IPOL_DEINT_FILTER         0x40000 // 262144
  63 #define MEDIAN_DEINT_FILTER             0x80000 // 524288
  64 #define FFMPEG_DEINT_FILTER             0x400000
  65 #define LOWPASS5_DEINT_FILTER           0x800000
  66
  67 #define TEMP_NOISE_FILTER               0x100000
  68 #define FORCE_QUANT                     0x200000
  69
  70 //use if you want a faster postprocessing code
  71 //cannot differentiate between chroma & luma filters (both on or both off)
  72 //obviously the -pp option on the command line has no effect except turning the here selected
  73 //filters on
  74 //#define COMPILE_TIME_MODE 0x77
  75
  76 static inline int CLIP(int a){
  77     if(a&256) return ((a)>>31)^(-1);
  78     else      return a;
  79 }
  80 /**
  81  * Postprocessng filter.
  82  */
  83 struct PPFilter{
  84     const char *shortName;
  85     const char *longName;
  86     int chromDefault;       ///< is chrominance filtering on by default if this filter is manually activated
  87     int minLumQuality;      ///< minimum quality to turn luminance filtering on
  88     int minChromQuality;    ///< minimum quality to turn chrominance filtering on
  89     int mask;               ///< Bitmask to turn this filter on
  90 };
  91
  92 /**
  93  * Postprocessng mode.
  94  */
  95 typedef struct PPMode{
  96     int lumMode;                    ///< acivates filters for luminance
  97     int chromMode;                  ///< acivates filters for chrominance
  98     int error;                      ///< non zero on error
  99
 100     int minAllowedY;                ///< for brigtness correction
 101     int maxAllowedY;                ///< for brihtness correction
 102     float maxClippedThreshold;      ///< amount of "black" u r willing to loose to get a brightness corrected picture
 103
 104     int maxTmpNoise[3];             ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
 105
 106     int baseDcDiff;
 107     int flatnessThreshold;
 108
 109     int forcedQuant;                ///< quantizer if FORCE_QUANT is used
 110 } PPMode;
 111
 112 /**
 113  * postprocess context.
 114  */
 115 typedef struct PPContext{
 116     /**
 117      * info on struct for av_log
 118      */
 119     const AVClass *av_class;
 120
 121     uint8_t *tempBlocks; ///<used for the horizontal code
 122
 123     /**
 124      * luma histogram.
 125      * we need 64bit here otherwise we'll going to have a problem
 126      * after watching a black picture for 5 hours
 127      */
 128     uint64_t *yHistogram;
 129
 130     DECLARE_ALIGNED(8, uint64_t, packedYOffset);
 131     DECLARE_ALIGNED(8, uint64_t, packedYScale);
 132
 133     /** Temporal noise reducing buffers */
 134     uint8_t *tempBlurred[3];
 135     int32_t *tempBlurredPast[3];
 136
 137     /** Temporary buffers for handling the last row(s) */
 138     uint8_t *tempDst;
 139     uint8_t *tempSrc;
 140
 141     uint8_t *deintTemp;
 142
 143     DECLARE_ALIGNED(8, uint64_t, pQPb);
 144     DECLARE_ALIGNED(8, uint64_t, pQPb2);
 145
 146     DECLARE_ALIGNED(8, uint64_t, mmxDcOffset[64]);
 147     DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold[64]);
 148
 149     QP_STORE_T *stdQPTable;       ///< used to fix MPEG2 style qscale
 150     QP_STORE_T *nonBQPTable;
 151     QP_STORE_T *forcedQPTable;
 152
 153     int QP;
 154     int nonBQP;
 155
 156     int frameNum;
 157
 158     int cpuCaps;
 159
 160     int qpStride; ///<size of qp buffers (needed to realloc them if needed)
 161     int stride;   ///<size of some buffers (needed to realloc them if needed)
 162
 163     int hChromaSubSample;
 164     int vChromaSubSample;
 165
 166     PPMode ppMode;
 167 } PPContext;
 168
 169
 170 static inline void linecpy(void *dest, const void *src, int lines, int stride) {
 171     if (stride > 0) {
 172         memcpy(dest, src, lines*stride);
 173     } else {
 174         memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);
 175     }
 176 }
 177
 178 #endif /* POSTPROC_POSTPROCESS_INTERNAL_H */