FFmpeg: libpostproc/postprocess_internal.h Source File

FFmpeg
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  #define CLIP av_clip_uint8
80 
81 /**
82  * Postprocessing filter.
83  */
84  struct PPFilter{
85   const char *shortName;
86   const char *longName;
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
91 };
92 
93 /**
94  * Postprocessing mode.
95  */
96  typedef struct PPMode{
97   int lumMode; ///< activates filters for luminance
98   int chromMode; ///< activates filters for chrominance
99   int error; ///< non zero on error
100 
101   int minAllowedY; ///< for brightness correction
102   int maxAllowedY; ///< for brightness correction
103   float maxClippedThreshold; ///< amount of "black" you are willing to lose to get a brightness-corrected picture
104 
105   int maxTmpNoise[3]; ///< for Temporal Noise Reducing filter (Maximal sum of abs differences)
106 
107   int baseDcDiff;
108   int flatnessThreshold;
109 
110   int forcedQuant; ///< quantizer if FORCE_QUANT is used
111 } PPMode;
112 
113 /**
114  * postprocess context.
115  */
116  typedef struct PPContext{
117  /**
118  * info on struct for av_log
119  */
120   const AVClass *av_class;
121 
122   uint8_t *tempBlocks; ///<used for the horizontal code
123 
124  /**
125  * luma histogram.
126  * we need 64bit here otherwise we'll going to have a problem
127  * after watching a black picture for 5 hours
128  */
129   uint64_t *yHistogram;
130 
131   DECLARE_ALIGNED(8, uint64_t, packedYOffset);
132   DECLARE_ALIGNED(8, uint64_t, packedYScale);
133 
134  /** Temporal noise reducing buffers */
135   uint8_t *tempBlurred[3];
136   int32_t *tempBlurredPast[3];
137 
138  /** Temporary buffers for handling the last row(s) */
139   uint8_t *tempDst;
140   uint8_t *tempSrc;
141 
142   uint8_t *deintTemp;
143 
144   DECLARE_ALIGNED(8, uint64_t, pQPb);
145   DECLARE_ALIGNED(8, uint64_t, pQPb2);
146 
147   DECLARE_ALIGNED(8, uint64_t, mmxDcOffset)[64];
148   DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold)[64];
149 
150   QP_STORE_T *stdQPTable; ///< used to fix MPEG2 style qscale
151   QP_STORE_T *nonBQPTable;
152   QP_STORE_T *forcedQPTable;
153 
154   int QP;
155   int nonBQP;
156 
157   int frameNum;
158 
159   int cpuCaps;
160 
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)
163 
164   int hChromaSubSample;
165   int vChromaSubSample;
166 
167   PPMode ppMode;
168 } PPContext;
169 
170 
171  static inline void linecpy(void *dest, const void *src, int lines, int stride) {
172  if (stride > 0) {
173  memcpy(dest, src, lines*stride);
174  } else {
175  memcpy((uint8_t*)dest+(lines-1)*stride, (const uint8_t*)src+(lines-1)*stride, -lines*stride);
176  }
177 }
178 
179 #endif /* POSTPROC_POSTPROCESS_INTERNAL_H */
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