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
76static inline int CLIP(int a){
77    if(a&256) return ((a)>>31)^(-1);
78    else      return a;
79}
80/**
81 * Postprocessng filter.
82 */
83struct 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 */
95typedef 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 */
115typedef 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
170static 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 */
179