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postprocess_internal.h
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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
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 "libavutil/intmath.h"
32 #include "libavutil/log.h"
33 #include "postprocess.h"
34 
35 #define V_DEBLOCK 0x01
36 #define H_DEBLOCK 0x02
37 #define DERING 0x04
38 #define LEVEL_FIX 0x08 ///< Brightness & Contrast
39 
40 #define LUM_V_DEBLOCK V_DEBLOCK // 1
41 #define LUM_H_DEBLOCK H_DEBLOCK // 2
42 #define CHROM_V_DEBLOCK (V_DEBLOCK<<4) // 16
43 #define CHROM_H_DEBLOCK (H_DEBLOCK<<4) // 32
44 #define LUM_DERING DERING // 4
45 #define CHROM_DERING (DERING<<4) // 64
46 #define LUM_LEVEL_FIX LEVEL_FIX // 8
47 #define CHROM_LEVEL_FIX (LEVEL_FIX<<4) // 128 (not implemented yet)
48 
49 // Experimental vertical filters
50 #define V_X1_FILTER 0x0200 // 512
51 #define V_A_DEBLOCK 0x0400
52 
53 // Experimental horizontal filters
54 #define H_X1_FILTER 0x2000 // 8192
55 #define H_A_DEBLOCK 0x4000
56 
57 /// select between full y range (255-0) or standard one (234-16)
58 #define FULL_Y_RANGE 0x8000 // 32768
59 
60 //Deinterlacing Filters
61 #define LINEAR_IPOL_DEINT_FILTER 0x10000 // 65536
62 #define LINEAR_BLEND_DEINT_FILTER 0x20000 // 131072
63 #define CUBIC_BLEND_DEINT_FILTER 0x8000 // (not implemented yet)
64 #define CUBIC_IPOL_DEINT_FILTER 0x40000 // 262144
65 #define MEDIAN_DEINT_FILTER 0x80000 // 524288
66 #define FFMPEG_DEINT_FILTER 0x400000
67 #define LOWPASS5_DEINT_FILTER 0x800000
68 
69 #define TEMP_NOISE_FILTER 0x100000
70 #define FORCE_QUANT 0x200000
71 #define BITEXACT 0x1000000
72 
73 //use if you want a faster postprocessing code
74 //cannot differentiate between chroma & luma filters (both on or both off)
75 //obviously the -pp option on the command line has no effect except turning the here selected
76 //filters on
77 //#define COMPILE_TIME_MODE 0x77
78 
79 /**
80  * Postprocessing filter.
81  */
82 struct PPFilter{
83  const char *shortName;
84  const char *longName;
85  int chromDefault; ///< is chrominance filtering on by default if this filter is manually activated
86  int minLumQuality; ///< minimum quality to turn luminance filtering on
87  int minChromQuality; ///< minimum quality to turn chrominance filtering on
88  int mask; ///< Bitmask to turn this filter on
89 };
90 
91 /**
92  * Postprocessing mode.
93  */
94 typedef struct PPMode{
95  int lumMode; ///< activates filters for luminance
96  int chromMode; ///< activates filters for chrominance
97  int error; ///< non zero on error
98 
99  int minAllowedY; ///< for brightness correction
100  int maxAllowedY; ///< for brightness correction
101  float maxClippedThreshold; ///< amount of "black" you are willing to lose to get a brightness-corrected picture
102 
103  int maxTmpNoise[3]; ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
104 
107 
108  int forcedQuant; ///< quantizer if FORCE_QUANT is used
109 } PPMode;
110 
111 /**
112  * postprocess context.
113  */
114 typedef struct PPContext{
115  /**
116  * info on struct for av_log
117  */
119 
120  uint8_t *tempBlocks; ///<used for the horizontal code
121 
122  /**
123  * luma histogram.
124  * we need 64bit here otherwise we'll going to have a problem
125  * after watching a black picture for 5 hours
126  */
127  uint64_t *yHistogram;
128 
131 
132  /** Temporal noise reducing buffers */
135 
136  /** Temporary buffers for handling the last row(s) */
139 
141 
142  DECLARE_ALIGNED(8, uint64_t, pQPb);
143  DECLARE_ALIGNED(8, uint64_t, pQPb2);
144 
145  DECLARE_ALIGNED(8, uint64_t, mmxDcOffset)[64];
146  DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold)[64];
147 
148  QP_STORE_T *stdQPTable; ///< used to fix MPEG2 style qscale
151 
152  int QP;
153  int nonBQP;
154 
155  int frameNum;
156 
157  int cpuCaps;
158 
159  int qpStride; ///<size of qp buffers (needed to realloc them if needed)
160  int stride; ///<size of some buffers (needed to realloc them if needed)
161 
164 
166 } PPContext;
167 
168 
169 static inline void linecpy(void *dest, const void *src, int lines, int stride) {
170  if (stride > 0) {
171  memcpy(dest, src, lines*stride);
172  } else {
173  memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);
174  }
175 }
176 
177 #endif /* POSTPROC_POSTPROCESS_INTERNAL_H */