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comparison x265/source/encoder/frameencoder.h @ 0:772086c29cc7

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Initial import.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 16 Nov 2016 11:16:33 +0200
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-1:000000000000 0:772086c29cc7
1 /*****************************************************************************
2 * Copyright (C) 2013 x265 project
3 *
4 * Authors: Shin Yee <shinyee@multicorewareinc.com>
5 * Min Chen <chenm003@163.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
20 *
21 * This program is also available under a commercial proprietary license.
22 * For more information, contact us at license @ x265.com.
23 *****************************************************************************/
24
25 #ifndef X265_FRAMEENCODER_H
26 #define X265_FRAMEENCODER_H
27
28 #include "common.h"
29 #include "wavefront.h"
30 #include "bitstream.h"
31 #include "frame.h"
32 #include "picyuv.h"
33 #include "md5.h"
34
35 #include "analysis.h"
36 #include "sao.h"
37
38 #include "entropy.h"
39 #include "framefilter.h"
40 #include "ratecontrol.h"
41 #include "reference.h"
42 #include "nal.h"
43
44 namespace X265_NS {
45 // private x265 namespace
46
47 class ThreadPool;
48 class Encoder;
49
50 #define ANGULAR_MODE_ID 2
51 #define AMP_ID 3
52
53 struct StatisticLog
54 {
55 uint64_t cntInter[4];
56 uint64_t cntIntra[4];
57 uint64_t cuInterDistribution[4][INTER_MODES];
58 uint64_t cuIntraDistribution[4][INTRA_MODES];
59 uint64_t cntIntraNxN;
60 uint64_t cntSkipCu[4];
61 uint64_t cntTotalCu[4];
62 uint64_t totalCu;
63
64 StatisticLog()
65 {
66 memset(this, 0, sizeof(StatisticLog));
67 }
68 };
69
70 /* manages the state of encoding one row of CTU blocks. When
71 * WPP is active, several rows will be simultaneously encoded. */
72 struct CTURow
73 {
74 Entropy bufferedEntropy; /* store CTU2 context for next row CTU0 */
75 Entropy rowGoOnCoder; /* store context between CTUs, code bitstream if !SAO */
76
77 FrameStats rowStats;
78
79 /* Threading variables */
80
81 /* This lock must be acquired when reading or writing m_active or m_busy */
82 Lock lock;
83
84 /* row is ready to run, has no neighbor dependencies. The row may have
85 * external dependencies (reference frame pixels) that prevent it from being
86 * processed, so it may stay with m_active=true for some time before it is
87 * encoded by a worker thread. */
88 volatile bool active;
89
90 /* row is being processed by a worker thread. This flag is only true when a
91 * worker thread is within the context of FrameEncoder::processRow(). This
92 * flag is used to detect multiple possible wavefront problems. */
93 volatile bool busy;
94
95 /* count of completed CUs in this row */
96 volatile uint32_t completed;
97
98 /* called at the start of each frame to initialize state */
99 void init(Entropy& initContext)
100 {
101 active = false;
102 busy = false;
103 completed = 0;
104 memset(&rowStats, 0, sizeof(rowStats));
105 rowGoOnCoder.load(initContext);
106 }
107 };
108
109 // Manages the wave-front processing of a single encoding frame
110 class FrameEncoder : public WaveFront, public Thread
111 {
112 public:
113
114 FrameEncoder();
115
116 virtual ~FrameEncoder() {}
117
118 virtual bool init(Encoder *top, int numRows, int numCols);
119
120 void destroy();
121
122 /* triggers encode of a new frame by the worker thread */
123 bool startCompressFrame(Frame* curFrame);
124
125 /* blocks until worker thread is done, returns access unit */
126 Frame *getEncodedPicture(NALList& list);
127
128 Event m_enable;
129 Event m_done;
130 Event m_completionEvent;
131 int m_localTldIdx;
132
133 volatile bool m_threadActive;
134 volatile bool m_bAllRowsStop;
135 volatile int m_completionCount;
136 volatile int m_vbvResetTriggerRow;
137
138 uint32_t m_numRows;
139 uint32_t m_numCols;
140 uint32_t m_filterRowDelay;
141 uint32_t m_filterRowDelayCus;
142 uint32_t m_refLagRows;
143
144 CTURow* m_rows;
145 RateControlEntry m_rce;
146 SEIDecodedPictureHash m_seiReconPictureDigest;
147
148 uint64_t m_SSDY;
149 uint64_t m_SSDU;
150 uint64_t m_SSDV;
151 double m_ssim;
152 uint64_t m_accessUnitBits;
153 uint32_t m_ssimCnt;
154 MD5Context m_state[3];
155 uint32_t m_crc[3];
156 uint32_t m_checksum[3];
157
158 volatile int m_activeWorkerCount; // count of workers currently encoding or filtering CTUs
159 volatile int m_totalActiveWorkerCount; // sum of m_activeWorkerCount sampled at end of each CTU
160 volatile int m_activeWorkerCountSamples; // count of times m_activeWorkerCount was sampled (think vbv restarts)
161 volatile int m_countRowBlocks; // count of workers forced to abandon a row because of top dependency
162 int64_t m_startCompressTime; // timestamp when frame encoder is given a frame
163 int64_t m_row0WaitTime; // timestamp when row 0 is allowed to start
164 int64_t m_allRowsAvailableTime; // timestamp when all reference dependencies are resolved
165 int64_t m_endCompressTime; // timestamp after all CTUs are compressed
166 int64_t m_endFrameTime; // timestamp after RCEnd, NR updates, etc
167 int64_t m_stallStartTime; // timestamp when worker count becomes 0
168 int64_t m_prevOutputTime; // timestamp when prev frame was retrieved by API thread
169 int64_t m_slicetypeWaitTime; // total elapsed time waiting for decided frame
170 int64_t m_totalWorkerElapsedTime; // total elapsed time spent by worker threads processing CTUs
171 int64_t m_totalNoWorkerTime; // total elapsed time without any active worker threads
172 #if DETAILED_CU_STATS
173 CUStats m_cuStats;
174 #endif
175
176 Encoder* m_top;
177 x265_param* m_param;
178 Frame* m_frame;
179 NoiseReduction* m_nr;
180 ThreadLocalData* m_tld; /* for --no-wpp */
181 Bitstream* m_outStreams;
182 uint32_t* m_substreamSizes;
183
184 CUGeom* m_cuGeoms;
185 uint32_t* m_ctuGeomMap;
186
187 Bitstream m_bs;
188 MotionReference m_mref[2][MAX_NUM_REF + 1];
189 Entropy m_entropyCoder;
190 Entropy m_initSliceContext;
191 FrameFilter m_frameFilter;
192 NALList m_nalList;
193
194 class WeightAnalysis : public BondedTaskGroup
195 {
196 public:
197
198 FrameEncoder& master;
199
200 WeightAnalysis(FrameEncoder& fe) : master(fe) {}
201
202 void processTasks(int workerThreadId);
203
204 protected:
205
206 WeightAnalysis operator=(const WeightAnalysis&);
207 };
208
209 protected:
210
211 bool initializeGeoms();
212
213 /* analyze / compress frame, can be run in parallel within reference constraints */
214 void compressFrame();
215
216 /* called by compressFrame to generate final per-row bitstreams */
217 void encodeSlice();
218
219 void threadMain();
220 int collectCTUStatistics(const CUData& ctu, FrameStats* frameLog);
221 void noiseReductionUpdate();
222
223 /* Called by WaveFront::findJob() */
224 virtual void processRow(int row, int threadId);
225 virtual void processRowEncoder(int row, ThreadLocalData& tld);
226
227 void enqueueRowEncoder(int row) { WaveFront::enqueueRow(row * 2 + 0); }
228 void enqueueRowFilter(int row) { WaveFront::enqueueRow(row * 2 + 1); }
229 void enableRowEncoder(int row) { WaveFront::enableRow(row * 2 + 0); }
230 void enableRowFilter(int row) { WaveFront::enableRow(row * 2 + 1); }
231 };
232 }
233
234 #endif // ifndef X265_FRAMEENCODER_H