b4bf0ca05e7dce37f1688cbea490289ff61a02bf
[libav.git] / 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 postprocess_internal.h
23 * internal api header.
24 */
25
26 #include "avutil.h"
27
28 #define V_DEBLOCK 0x01
29 #define H_DEBLOCK 0x02
30 #define DERING 0x04
31 #define LEVEL_FIX 0x08 ///< Brightness & Contrast
32
33 #define LUM_V_DEBLOCK V_DEBLOCK // 1
34 #define LUM_H_DEBLOCK H_DEBLOCK // 2
35 #define CHROM_V_DEBLOCK (V_DEBLOCK<<4) // 16
36 #define CHROM_H_DEBLOCK (H_DEBLOCK<<4) // 32
37 #define LUM_DERING DERING // 4
38 #define CHROM_DERING (DERING<<4) // 64
39 #define LUM_LEVEL_FIX LEVEL_FIX // 8
40 #define CHROM_LEVEL_FIX (LEVEL_FIX<<4) // 128 (not implemented yet)
41
42 // Experimental vertical filters
43 #define V_X1_FILTER 0x0200 // 512
44 #define V_A_DEBLOCK 0x0400
45
46 // Experimental horizontal filters
47 #define H_X1_FILTER 0x2000 // 8192
48 #define H_A_DEBLOCK 0x4000
49
50 /// select between full y range (255-0) or standart one (234-16)
51 #define FULL_Y_RANGE 0x8000 // 32768
52
53 //Deinterlacing Filters
54 #define LINEAR_IPOL_DEINT_FILTER 0x10000 // 65536
55 #define LINEAR_BLEND_DEINT_FILTER 0x20000 // 131072
56 #define CUBIC_BLEND_DEINT_FILTER 0x8000 // (not implemented yet)
57 #define CUBIC_IPOL_DEINT_FILTER 0x40000 // 262144
58 #define MEDIAN_DEINT_FILTER 0x80000 // 524288
59 #define FFMPEG_DEINT_FILTER 0x400000
60 #define LOWPASS5_DEINT_FILTER 0x800000
61
62 #define TEMP_NOISE_FILTER 0x100000
63 #define FORCE_QUANT 0x200000
64
65 #if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
66 # define PIC
67 #endif
68
69 //use if you want a faster postprocessing code
70 //cannot differentiate between chroma & luma filters (both on or both off)
71 //obviously the -pp option on the command line has no effect except turning the here selected
72 //filters on
73 //#define COMPILE_TIME_MODE 0x77
74
75 #if 1
76 static inline int CLIP(int a){
77 if(a&256) return ((a)>>31)^(-1);
78 else return a;
79 }
80 //#define CLIP(a) (((a)&256) ? ((a)>>31)^(-1) : (a))
81 #elif 0
82 #define CLIP(a) clip_tab[a]
83 #else
84 #define CLIP(a) (a)
85 #endif
86 /**
87 * Postprocessng filter.
88 */
89 struct PPFilter{
90 const char *shortName;
91 const char *longName;
92 int chromDefault; ///< is chrominance filtering on by default if this filter is manually activated
93 int minLumQuality; ///< minimum quality to turn luminance filtering on
94 int minChromQuality; ///< minimum quality to turn chrominance filtering on
95 int mask; ///< Bitmask to turn this filter on
96 };
97
98 /**
99 * Postprocessng mode.
100 */
101 typedef struct PPMode{
102 int lumMode; ///< acivates filters for luminance
103 int chromMode; ///< acivates filters for chrominance
104 int error; ///< non zero on error
105
106 int minAllowedY; ///< for brigtness correction
107 int maxAllowedY; ///< for brihtness correction
108 float maxClippedThreshold; ///< amount of "black" u r willing to loose to get a brightness corrected picture
109
110 int maxTmpNoise[3]; ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
111
112 int baseDcDiff;
113 int flatnessThreshold;
114
115 int forcedQuant; ///< quantizer if FORCE_QUANT is used
116 } PPMode;
117
118 /**
119 * postprocess context.
120 */
121 typedef struct PPContext{
122 /**
123 * info on struct for av_log
124 */
125 AVClass *av_class;
126
127 uint8_t *tempBlocks; ///<used for the horizontal code
128
129 /**
130 * luma histogram.
131 * we need 64bit here otherwise we'll going to have a problem
132 * after watching a black picture for 5 hours
133 */
134 uint64_t *yHistogram;
135
136 DECLARE_ALIGNED(8, uint64_t, packedYOffset);
137 DECLARE_ALIGNED(8, uint64_t, packedYScale);
138
139 /** Temporal noise reducing buffers */
140 uint8_t *tempBlured[3];
141 int32_t *tempBluredPast[3];
142
143 /** Temporary buffers for handling the last row(s) */
144 uint8_t *tempDst;
145 uint8_t *tempSrc;
146
147 uint8_t *deintTemp;
148
149 DECLARE_ALIGNED(8, uint64_t, pQPb);
150 DECLARE_ALIGNED(8, uint64_t, pQPb2);
151
152 DECLARE_ALIGNED(8, uint64_t, mmxDcOffset[64]);
153 DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold[64]);
154
155 QP_STORE_T *stdQPTable; ///< used to fix MPEG2 style qscale
156 QP_STORE_T *nonBQPTable;
157 QP_STORE_T *forcedQPTable;
158
159 int QP;
160 int nonBQP;
161
162 int frameNum;
163
164 int cpuCaps;
165
166 int qpStride; ///<size of qp buffers (needed to realloc them if needed)
167 int stride; ///<size of some buffers (needed to realloc them if needed)
168
169 int hChromaSubSample;
170 int vChromaSubSample;
171
172 PPMode ppMode;
173 } PPContext;
174
175
176 static inline void linecpy(void *dest, void *src, int lines, int stride)
177 {
178 if (stride > 0) {
179 memcpy(dest, src, lines*stride);
180 } else {
181 memcpy(dest+(lines-1)*stride, src+(lines-1)*stride, -lines*stride);
182 }
183 }