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/*

 * Copyright (C) 2001-2002 Michael Niedermayer (michaelni@gmx.at)

 *

 * 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

 */

/**

 * @file

 * internal API header.

 */

#ifndef POSTPROC_POSTPROCESS_INTERNAL_H

#define POSTPROC_POSTPROCESS_INTERNAL_H

#include 

#include "libavutil/avutil.h"

#include "libavutil/intmath.h"

#include "libavutil/log.h"

#include "postprocess.h"

#define V_DEBLOCK       0x01

#define H_DEBLOCK       0x02

#define DERING          0x04

#define LEVEL_FIX       0x08 ///< Brightness & Contrast

#define LUM_V_DEBLOCK   V_DEBLOCK               //   1

#define LUM_H_DEBLOCK   H_DEBLOCK               //   2

#define CHROM_V_DEBLOCK (V_DEBLOCK<<4)          //  16

#define CHROM_H_DEBLOCK (H_DEBLOCK<<4)          //  32

#define LUM_DERING      DERING                  //   4

#define CHROM_DERING    (DERING<<4)             //  64

#define LUM_LEVEL_FIX   LEVEL_FIX               //   8

#define CHROM_LEVEL_FIX (LEVEL_FIX<<4)          // 128 (not implemented yet)

// Experimental vertical filters

#define V_X1_FILTER     0x0200                  // 512

#define V_A_DEBLOCK     0x0400

// Experimental horizontal filters

#define H_X1_FILTER     0x2000                  // 8192

#define H_A_DEBLOCK     0x4000

/// select between full y range (255-0) or standard one (234-16)

#define FULL_Y_RANGE    0x8000                  // 32768

//Deinterlacing Filters

#define LINEAR_IPOL_DEINT_FILTER        0x10000 // 65536

#define LINEAR_BLEND_DEINT_FILTER       0x20000 // 131072

#define CUBIC_BLEND_DEINT_FILTER        0x8000  // (not implemented yet)

#define CUBIC_IPOL_DEINT_FILTER         0x40000 // 262144

#define MEDIAN_DEINT_FILTER             0x80000 // 524288

#define FFMPEG_DEINT_FILTER             0x400000

#define LOWPASS5_DEINT_FILTER           0x800000

#define TEMP_NOISE_FILTER               0x100000

#define FORCE_QUANT                     0x200000

#define BITEXACT                        0x1000000

//use if you want a faster postprocessing code

//cannot differentiate between chroma & luma filters (both on or both off)

//obviously the -pp option on the command line has no effect except turning the here selected

//filters on

//#define COMPILE_TIME_MODE 0x77

#define CLIP av_clip_uint8

/**

 * Postprocessing filter.

 */

struct PPFilter{

    const char *shortName;

    const char *longName;

    int chromDefault;       ///< is chrominance filtering on by default if this filter is manually activated

    int minLumQuality;      ///< minimum quality to turn luminance filtering on

    int minChromQuality;    ///< minimum quality to turn chrominance filtering on

    int mask;               ///< Bitmask to turn this filter on

};

/**

 * Postprocessing mode.

 */

typedef struct PPMode{

    int lumMode;                    ///< activates filters for luminance

    int chromMode;                  ///< activates filters for chrominance

    int error;                      ///< non zero on error

    int minAllowedY;                ///< for brightness correction

    int maxAllowedY;                ///< for brightness correction

    float maxClippedThreshold;      ///< amount of "black" you are willing to lose to get a brightness-corrected picture

    int maxTmpNoise[3];             ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)

    int baseDcDiff;

    int flatnessThreshold;

    int forcedQuant;                ///< quantizer if FORCE_QUANT is used

} PPMode;

/**

 * postprocess context.

 */

typedef struct PPContext{

    /**

     * info on struct for av_log

     */

    const AVClass *av_class;

    uint8_t *tempBlocks; ///

    /**

     * luma histogram.

     * we need 64bit here otherwise we'll going to have a problem

     * after watching a black picture for 5 hours

     */

    uint64_t *yHistogram;

    DECLARE_ALIGNED(8, uint64_t, packedYOffset);

    DECLARE_ALIGNED(8, uint64_t, packedYScale);

    /** Temporal noise reducing buffers */

    uint8_t *tempBlurred[3];

    int32_t *tempBlurredPast[3];

    /** Temporary buffers for handling the last row(s) */

    uint8_t *tempDst;

    uint8_t *tempSrc;

    uint8_t *deintTemp;

    DECLARE_ALIGNED(8, uint64_t, pQPb);

    DECLARE_ALIGNED(8, uint64_t, pQPb2);

    DECLARE_ALIGNED(8, uint64_t, mmxDcOffset)[64];

    DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold)[64];

    QP_STORE_T *stdQPTable;       ///< used to fix MPEG2 style qscale

    QP_STORE_T *nonBQPTable;

    QP_STORE_T *forcedQPTable;

    int QP;

    int nonBQP;

    int frameNum;

    int cpuCaps;

    int qpStride; ///

    int stride;   ///

    int hChromaSubSample;

    int vChromaSubSample;

    PPMode ppMode;

} PPContext;

static inline void linecpy(void *dest, const void *src, int lines, int stride) {

    if (stride > 0) {

        memcpy(dest, src, lines*stride);

    } else {

        memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);

    }

}

#endif /* POSTPROC_POSTPROCESS_INTERNAL_H */