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ffmpeg / libpostproc / postprocess_internal.h @ 9c5a9e6b

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/*
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 * Copyright (C) 2001-2002 Michael Niedermayer (michaelni@gmx.at)
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file libpostproc/postprocess_internal.h
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 * internal api header.
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 */
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#ifndef POSTPROC_POSTPROCESS_INTERNAL_H
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#define POSTPROC_POSTPROCESS_INTERNAL_H
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#include <string.h>
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#include "libavutil/avutil.h"
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#include "postprocess.h"
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#define V_DEBLOCK       0x01
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#define H_DEBLOCK       0x02
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#define DERING          0x04
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#define LEVEL_FIX       0x08 ///< Brightness & Contrast
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#define LUM_V_DEBLOCK   V_DEBLOCK               //   1
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#define LUM_H_DEBLOCK   H_DEBLOCK               //   2
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#define CHROM_V_DEBLOCK (V_DEBLOCK<<4)          //  16
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#define CHROM_H_DEBLOCK (H_DEBLOCK<<4)          //  32
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#define LUM_DERING      DERING                  //   4
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#define CHROM_DERING    (DERING<<4)             //  64
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#define LUM_LEVEL_FIX   LEVEL_FIX               //   8
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#define CHROM_LEVEL_FIX (LEVEL_FIX<<4)          // 128 (not implemented yet)
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// Experimental vertical filters
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#define V_X1_FILTER     0x0200                  // 512
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#define V_A_DEBLOCK     0x0400
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// Experimental horizontal filters
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#define H_X1_FILTER     0x2000                  // 8192
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#define H_A_DEBLOCK     0x4000
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/// select between full y range (255-0) or standart one (234-16)
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#define FULL_Y_RANGE    0x8000                  // 32768
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//Deinterlacing Filters
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#define LINEAR_IPOL_DEINT_FILTER        0x10000 // 65536
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#define LINEAR_BLEND_DEINT_FILTER       0x20000 // 131072
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#define CUBIC_BLEND_DEINT_FILTER        0x8000  // (not implemented yet)
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#define CUBIC_IPOL_DEINT_FILTER         0x40000 // 262144
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#define MEDIAN_DEINT_FILTER             0x80000 // 524288
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#define FFMPEG_DEINT_FILTER             0x400000
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#define LOWPASS5_DEINT_FILTER           0x800000
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#define TEMP_NOISE_FILTER               0x100000
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#define FORCE_QUANT                     0x200000
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//use if you want a faster postprocessing code
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//cannot differentiate between chroma & luma filters (both on or both off)
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//obviously the -pp option on the command line has no effect except turning the here selected
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//filters on
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//#define COMPILE_TIME_MODE 0x77
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static inline int CLIP(int a){
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    if(a&256) return ((a)>>31)^(-1);
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    else      return a;
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}
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/**
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 * Postprocessng filter.
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 */
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struct PPFilter{
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    const char *shortName;
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    const char *longName;
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    int chromDefault;       ///< is chrominance filtering on by default if this filter is manually activated
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    int minLumQuality;      ///< minimum quality to turn luminance filtering on
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    int minChromQuality;    ///< minimum quality to turn chrominance filtering on
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    int mask;               ///< Bitmask to turn this filter on
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};
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/**
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 * Postprocessng mode.
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 */
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typedef struct PPMode{
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    int lumMode;                    ///< acivates filters for luminance
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    int chromMode;                  ///< acivates filters for chrominance
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    int error;                      ///< non zero on error
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    int minAllowedY;                ///< for brigtness correction
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    int maxAllowedY;                ///< for brihtness correction
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    float maxClippedThreshold;      ///< amount of "black" u r willing to loose to get a brightness corrected picture
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    int maxTmpNoise[3];             ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
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    int baseDcDiff;
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    int flatnessThreshold;
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    int forcedQuant;                ///< quantizer if FORCE_QUANT is used
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} PPMode;
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/**
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 * postprocess context.
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 */
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typedef struct PPContext{
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    /**
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     * info on struct for av_log
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     */
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    const AVClass *av_class;
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    uint8_t *tempBlocks; ///<used for the horizontal code
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    /**
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     * luma histogram.
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     * we need 64bit here otherwise we'll going to have a problem
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     * after watching a black picture for 5 hours
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     */
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    uint64_t *yHistogram;
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    DECLARE_ALIGNED(8, uint64_t, packedYOffset);
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    DECLARE_ALIGNED(8, uint64_t, packedYScale);
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    /** Temporal noise reducing buffers */
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    uint8_t *tempBlurred[3];
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    int32_t *tempBlurredPast[3];
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    /** Temporary buffers for handling the last row(s) */
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    uint8_t *tempDst;
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    uint8_t *tempSrc;
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    uint8_t *deintTemp;
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    DECLARE_ALIGNED(8, uint64_t, pQPb);
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    DECLARE_ALIGNED(8, uint64_t, pQPb2);
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    DECLARE_ALIGNED(8, uint64_t, mmxDcOffset[64]);
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    DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold[64]);
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    QP_STORE_T *stdQPTable;       ///< used to fix MPEG2 style qscale
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    QP_STORE_T *nonBQPTable;
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    QP_STORE_T *forcedQPTable;
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    int QP;
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    int nonBQP;
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    int frameNum;
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    int cpuCaps;
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    int qpStride; ///<size of qp buffers (needed to realloc them if needed)
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    int stride;   ///<size of some buffers (needed to realloc them if needed)
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    int hChromaSubSample;
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    int vChromaSubSample;
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    PPMode ppMode;
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} PPContext;
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static inline void linecpy(void *dest, const void *src, int lines, int stride) {
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    if (stride > 0) {
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        memcpy(dest, src, lines*stride);
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    } else {
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        memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);
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    }
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}
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#endif /* POSTPROC_POSTPROCESS_INTERNAL_H */