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1 | /***************************************************************************** |
2 | * Copyright (C) 2013 x265 project | |
3 | * | |
4 | * Authors: Steve Borho <steve@borho.org> | |
5 | * | |
6 | * This program 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 | * This program 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 this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. | |
19 | * | |
20 | * This program is also available under a commercial proprietary license. | |
21 | * For more information, contact us at license @ x265.com. | |
22 | *****************************************************************************/ | |
23 | ||
24 | #ifndef X265_SLICETYPE_H | |
25 | #define X265_SLICETYPE_H | |
26 | ||
27 | #include "common.h" | |
28 | #include "slice.h" | |
29 | #include "motion.h" | |
30 | #include "piclist.h" | |
31 | #include "wavefront.h" | |
32 | ||
33 | namespace x265 { | |
34 | // private namespace | |
35 | ||
36 | struct Lowres; | |
37 | class Frame; | |
38 | ||
39 | #define LOWRES_COST_MASK ((1 << 14) - 1) | |
40 | #define LOWRES_COST_SHIFT 14 | |
41 | ||
42 | #define SET_WEIGHT(w, b, s, d, o) \ | |
43 | { \ | |
44 | (w).inputWeight = (s); \ | |
45 | (w).log2WeightDenom = (d); \ | |
46 | (w).inputOffset = (o); \ | |
47 | (w).bPresentFlag = b; \ | |
48 | } | |
49 | ||
50 | class EstimateRow | |
51 | { | |
52 | public: | |
53 | x265_param* m_param; | |
54 | MotionEstimate m_me; | |
55 | Lock m_lock; | |
56 | pixel* m_predictions; // buffer for 35 intra predictions | |
57 | ||
58 | volatile uint32_t m_completed; // Number of CUs in this row for which cost estimation is completed | |
59 | volatile bool m_active; | |
60 | ||
61 | uint64_t m_costEst; // Estimated cost for all CUs in a row | |
62 | uint64_t m_costEstAq; // Estimated weight Aq cost for all CUs in a row | |
63 | uint64_t m_costIntraAq; // Estimated weighted Aq Intra cost for all CUs in a row | |
64 | int m_intraMbs; // Number of Intra CUs | |
65 | int m_costIntra; // Estimated Intra cost for all CUs in a row | |
66 | ||
67 | int m_merange; | |
68 | int m_lookAheadLambda; | |
69 | ||
70 | int m_widthInCU; | |
71 | int m_heightInCU; | |
72 | ||
73 | EstimateRow() | |
74 | { | |
75 | m_me.setQP(X265_LOOKAHEAD_QP); | |
76 | m_me.setSearchMethod(X265_HEX_SEARCH); | |
77 | m_me.setSubpelRefine(1); | |
78 | m_predictions = X265_MALLOC(pixel, 35 * 8 * 8); | |
79 | m_merange = 16; | |
80 | m_lookAheadLambda = (int)x265_lambda_tab[X265_LOOKAHEAD_QP]; | |
81 | } | |
82 | ||
83 | ~EstimateRow() | |
84 | { | |
85 | X265_FREE(m_predictions); | |
86 | } | |
87 | ||
88 | void init(); | |
89 | ||
90 | void estimateCUCost(Lowres * *frames, ReferencePlanes * wfref0, int cux, int cuy, int p0, int p1, int b, bool bDoSearch[2]); | |
91 | }; | |
92 | ||
93 | /* CostEstimate manages the cost estimation of a single frame, ie: | |
94 | * estimateFrameCost() and everything below it in the call graph */ | |
95 | class CostEstimate : public WaveFront | |
96 | { | |
97 | public: | |
98 | CostEstimate(ThreadPool *p); | |
99 | ~CostEstimate(); | |
100 | void init(x265_param *, Frame *); | |
101 | ||
102 | x265_param *m_param; | |
103 | EstimateRow *m_rows; | |
104 | pixel *m_wbuffer[4]; | |
105 | Lowres **m_curframes; | |
106 | ||
107 | ReferencePlanes m_weightedRef; | |
108 | WeightParam m_w; | |
109 | ||
110 | int m_paddedLines; // number of lines in padded frame | |
111 | int m_widthInCU; // width of lowres frame in downscale CUs | |
112 | int m_heightInCU; // height of lowres frame in downscale CUs | |
113 | ||
114 | bool m_bDoSearch[2]; | |
115 | volatile bool m_bFrameCompleted; | |
116 | int m_curb, m_curp0, m_curp1; | |
117 | ||
118 | void processRow(int row, int threadId); | |
119 | int64_t estimateFrameCost(Lowres **frames, int p0, int p1, int b, bool bIntraPenalty); | |
120 | ||
121 | protected: | |
122 | ||
123 | void weightsAnalyse(Lowres **frames, int b, int p0); | |
124 | uint32_t weightCostLuma(Lowres **frames, int b, int p0, WeightParam *w); | |
125 | }; | |
126 | ||
127 | class Lookahead : public JobProvider | |
128 | { | |
129 | public: | |
130 | ||
131 | Lookahead(x265_param *param, ThreadPool *pool); | |
132 | ~Lookahead(); | |
133 | void init(); | |
134 | void destroy(); | |
135 | ||
136 | CostEstimate m_est; // Frame cost estimator | |
137 | PicList m_inputQueue; // input pictures in order received | |
138 | PicList m_outputQueue; // pictures to be encoded, in encode order | |
139 | ||
140 | x265_param *m_param; | |
141 | Lowres *m_lastNonB; | |
142 | int *m_scratch; // temp buffer | |
143 | ||
144 | int m_widthInCU; // width of lowres frame in downscale CUs | |
145 | int m_heightInCU; // height of lowres frame in downscale CUs | |
146 | int m_lastKeyframe; | |
147 | int m_histogram[X265_BFRAME_MAX + 1]; | |
148 | ||
149 | void addPicture(Frame*, int sliceType); | |
150 | void flush(); | |
151 | Frame* getDecidedPicture(); | |
152 | ||
153 | void getEstimatedPictureCost(Frame *pic); | |
154 | ||
155 | protected: | |
156 | ||
157 | Lock m_inputQueueLock; | |
158 | Lock m_outputQueueLock; | |
159 | Lock m_decideLock; | |
160 | Event m_outputAvailable; | |
161 | volatile int m_bReady; | |
162 | volatile bool m_bFilling; | |
163 | volatile bool m_bFlushed; | |
164 | bool findJob(int); | |
165 | ||
166 | /* called by addPicture() or flush() to trigger slice decisions */ | |
167 | void slicetypeDecide(); | |
168 | void slicetypeAnalyse(Lowres **frames, bool bKeyframe); | |
169 | ||
170 | /* called by slicetypeAnalyse() to make slice decisions */ | |
171 | bool scenecut(Lowres **frames, int p0, int p1, bool bRealScenecut, int numFrames, int maxSearch); | |
172 | bool scenecutInternal(Lowres **frames, int p0, int p1, bool bRealScenecut); | |
173 | void slicetypePath(Lowres **frames, int length, char(*best_paths)[X265_LOOKAHEAD_MAX + 1]); | |
174 | int64_t slicetypePathCost(Lowres **frames, char *path, int64_t threshold); | |
175 | int64_t vbvFrameCost(Lowres **frames, int p0, int p1, int b); | |
176 | void vbvLookahead(Lowres **frames, int numFrames, int keyframes); | |
177 | ||
178 | /* called by slicetypeAnalyse() to effect cuTree adjustments to adaptive | |
179 | * quant offsets */ | |
180 | void cuTree(Lowres **frames, int numframes, bool bintra); | |
181 | void estimateCUPropagate(Lowres **frames, double average_duration, int p0, int p1, int b, int referenced); | |
182 | void cuTreeFinish(Lowres *frame, double averageDuration, int ref0Distance); | |
183 | ||
184 | /* called by getEstimatedPictureCost() to finalize cuTree costs */ | |
185 | int64_t frameCostRecalculate(Lowres **frames, int p0, int p1, int b); | |
186 | }; | |
187 | } | |
188 | ||
189 | #endif // ifndef X265_SLICETYPE_H |