2 * Copyright (C) 2001-2002 Michael Niedermayer (michaelni@gmx.at)
4 * This file is part of FFmpeg.
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.
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.
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
23 * internal api header.
26 #ifndef POSTPROC_POSTPROCESS_INTERNAL_H
27 #define POSTPROC_POSTPROCESS_INTERNAL_H
30 #include "libavutil/avutil.h"
31 #include "libavutil/log.h"
32 #include "postprocess.h"
34 #define V_DEBLOCK 0x01
35 #define H_DEBLOCK 0x02
37 #define LEVEL_FIX 0x08 ///< Brightness & Contrast
39 #define LUM_V_DEBLOCK V_DEBLOCK // 1
40 #define LUM_H_DEBLOCK H_DEBLOCK // 2
41 #define CHROM_V_DEBLOCK (V_DEBLOCK<<4) // 16
42 #define CHROM_H_DEBLOCK (H_DEBLOCK<<4) // 32
43 #define LUM_DERING DERING // 4
44 #define CHROM_DERING (DERING<<4) // 64
45 #define LUM_LEVEL_FIX LEVEL_FIX // 8
46 #define CHROM_LEVEL_FIX (LEVEL_FIX<<4) // 128 (not implemented yet)
48 // Experimental vertical filters
49 #define V_X1_FILTER 0x0200 // 512
50 #define V_A_DEBLOCK 0x0400
52 // Experimental horizontal filters
53 #define H_X1_FILTER 0x2000 // 8192
54 #define H_A_DEBLOCK 0x4000
56 /// select between full y range (255-0) or standart one (234-16)
57 #define FULL_Y_RANGE 0x8000 // 32768
59 //Deinterlacing Filters
60 #define LINEAR_IPOL_DEINT_FILTER 0x10000 // 65536
61 #define LINEAR_BLEND_DEINT_FILTER 0x20000 // 131072
62 #define CUBIC_BLEND_DEINT_FILTER 0x8000 // (not implemented yet)
63 #define CUBIC_IPOL_DEINT_FILTER 0x40000 // 262144
64 #define MEDIAN_DEINT_FILTER 0x80000 // 524288
65 #define FFMPEG_DEINT_FILTER 0x400000
66 #define LOWPASS5_DEINT_FILTER 0x800000
68 #define TEMP_NOISE_FILTER 0x100000
69 #define FORCE_QUANT 0x200000
71 //use if you want a faster postprocessing code
72 //cannot differentiate between chroma & luma filters (both on or both off)
73 //obviously the -pp option on the command line has no effect except turning the here selected
75 //#define COMPILE_TIME_MODE 0x77
77 static inline int CLIP(int a){
78 if(a&256) return ((a)>>31)^(-1);
82 * Postprocessng filter.
85 const char *shortName;
87 int chromDefault; ///< is chrominance filtering on by default if this filter is manually activated
88 int minLumQuality; ///< minimum quality to turn luminance filtering on
89 int minChromQuality; ///< minimum quality to turn chrominance filtering on
90 int mask; ///< Bitmask to turn this filter on
96 typedef struct PPMode{
97 int lumMode; ///< acivates filters for luminance
98 int chromMode; ///< acivates filters for chrominance
99 int error; ///< non zero on error
101 int minAllowedY; ///< for brigtness correction
102 int maxAllowedY; ///< for brihtness correction
103 float maxClippedThreshold; ///< amount of "black" you are willing to lose to get a brightness-corrected picture
105 int maxTmpNoise[3]; ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
108 int flatnessThreshold;
110 int forcedQuant; ///< quantizer if FORCE_QUANT is used
114 * postprocess context.
116 typedef struct PPContext{
118 * info on struct for av_log
120 const AVClass *av_class;
122 uint8_t *tempBlocks; ///<used for the horizontal code
126 * we need 64bit here otherwise we'll going to have a problem
127 * after watching a black picture for 5 hours
129 uint64_t *yHistogram;
131 DECLARE_ALIGNED(8, uint64_t, packedYOffset);
132 DECLARE_ALIGNED(8, uint64_t, packedYScale);
134 /** Temporal noise reducing buffers */
135 uint8_t *tempBlurred[3];
136 int32_t *tempBlurredPast[3];
138 /** Temporary buffers for handling the last row(s) */
144 DECLARE_ALIGNED(8, uint64_t, pQPb);
145 DECLARE_ALIGNED(8, uint64_t, pQPb2);
147 DECLARE_ALIGNED(8, uint64_t, mmxDcOffset)[64];
148 DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold)[64];
150 QP_STORE_T *stdQPTable; ///< used to fix MPEG2 style qscale
151 QP_STORE_T *nonBQPTable;
152 QP_STORE_T *forcedQPTable;
161 int qpStride; ///<size of qp buffers (needed to realloc them if needed)
162 int stride; ///<size of some buffers (needed to realloc them if needed)
164 int hChromaSubSample;
165 int vChromaSubSample;
171 static inline void linecpy(void *dest, const void *src, int lines, int stride) {
173 memcpy(dest, src, lines*stride);
175 memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);
179 #endif /* POSTPROC_POSTPROCESS_INTERNAL_H */