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1 /* | |
2 * libjingle | |
3 * Copyright 2012 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 */ | |
27 | |
28 // This file contains structures used for retrieving statistics from an ongoing | |
29 // libjingle session. | |
30 | |
31 #ifndef TALK_APP_WEBRTC_STATSTYPES_H_ | |
32 #define TALK_APP_WEBRTC_STATSTYPES_H_ | |
33 | |
34 #include <algorithm> | |
35 #include <list> | |
36 #include <map> | |
37 #include <string> | |
38 | |
39 #include "webrtc/base/basictypes.h" | |
40 #include "webrtc/base/common.h" | |
41 #include "webrtc/base/linked_ptr.h" | |
42 #include "webrtc/base/refcount.h" | |
43 #include "webrtc/base/scoped_ptr.h" | |
44 #include "webrtc/base/scoped_ref_ptr.h" | |
45 #include "webrtc/base/stringencode.h" | |
46 #include "webrtc/base/thread_checker.h" | |
47 | |
48 namespace webrtc { | |
49 | |
50 class StatsReport { | |
51 public: | |
52 // Indicates whether a track is for sending or receiving. | |
53 // Used in reports for audio/video tracks. | |
54 enum Direction { | |
55 kSend = 0, | |
56 kReceive, | |
57 }; | |
58 | |
59 enum StatsType { | |
60 // StatsReport types. | |
61 // A StatsReport of |type| = "googSession" contains overall information | |
62 // about the thing libjingle calls a session (which may contain one | |
63 // or more RTP sessions. | |
64 kStatsReportTypeSession, | |
65 | |
66 // A StatsReport of |type| = "googTransport" contains information | |
67 // about a libjingle "transport". | |
68 kStatsReportTypeTransport, | |
69 | |
70 // A StatsReport of |type| = "googComponent" contains information | |
71 // about a libjingle "channel" (typically, RTP or RTCP for a transport). | |
72 // This is intended to be the same thing as an ICE "Component". | |
73 kStatsReportTypeComponent, | |
74 | |
75 // A StatsReport of |type| = "googCandidatePair" contains information | |
76 // about a libjingle "connection" - a single source/destination port pair. | |
77 // This is intended to be the same thing as an ICE "candidate pair". | |
78 kStatsReportTypeCandidatePair, | |
79 | |
80 // A StatsReport of |type| = "VideoBWE" is statistics for video Bandwidth | |
81 // Estimation, which is global per-session. The |id| field is "bweforvideo" | |
82 // (will probably change in the future). | |
83 kStatsReportTypeBwe, | |
84 | |
85 // A StatsReport of |type| = "ssrc" is statistics for a specific rtp stream. | |
86 // The |id| field is the SSRC in decimal form of the rtp stream. | |
87 kStatsReportTypeSsrc, | |
88 | |
89 // A StatsReport of |type| = "remoteSsrc" is statistics for a specific | |
90 // rtp stream, generated by the remote end of the connection. | |
91 kStatsReportTypeRemoteSsrc, | |
92 | |
93 // A StatsReport of |type| = "googTrack" is statistics for a specific media | |
94 // track. The |id| field is the track id. | |
95 kStatsReportTypeTrack, | |
96 | |
97 // A StatsReport of |type| = "localcandidate" or "remotecandidate" is | |
98 // attributes on a specific ICE Candidate. It links to its connection pair | |
99 // by candidate id. The string value is taken from | |
100 // http://w3c.github.io/webrtc-stats/#rtcstatstype-enum*. | |
101 kStatsReportTypeIceLocalCandidate, | |
102 kStatsReportTypeIceRemoteCandidate, | |
103 | |
104 // A StatsReport of |type| = "googCertificate" contains an SSL certificate | |
105 // transmitted by one of the endpoints of this connection. The |id| is | |
106 // controlled by the fingerprint, and is used to identify the certificate in | |
107 // the Channel stats (as "googLocalCertificateId" or | |
108 // "googRemoteCertificateId") and in any child certificates (as | |
109 // "googIssuerId"). | |
110 kStatsReportTypeCertificate, | |
111 | |
112 // A StatsReport of |type| = "datachannel" with statistics for a | |
113 // particular DataChannel. | |
114 kStatsReportTypeDataChannel, | |
115 }; | |
116 | |
117 enum StatsValueName { | |
118 kStatsValueNameActiveConnection, | |
119 kStatsValueNameAudioInputLevel, | |
120 kStatsValueNameAudioOutputLevel, | |
121 kStatsValueNameBytesReceived, | |
122 kStatsValueNameBytesSent, | |
123 kStatsValueNameCodecImplementationName, | |
124 kStatsValueNameDataChannelId, | |
125 kStatsValueNameMediaType, | |
126 kStatsValueNamePacketsLost, | |
127 kStatsValueNamePacketsReceived, | |
128 kStatsValueNamePacketsSent, | |
129 kStatsValueNameProtocol, | |
130 kStatsValueNameReceiving, | |
131 kStatsValueNameSelectedCandidatePairId, | |
132 kStatsValueNameSsrc, | |
133 kStatsValueNameState, | |
134 kStatsValueNameTransportId, | |
135 | |
136 // Internal StatsValue names. | |
137 kStatsValueNameAccelerateRate, | |
138 kStatsValueNameActualEncBitrate, | |
139 kStatsValueNameAdaptationChanges, | |
140 kStatsValueNameAvailableReceiveBandwidth, | |
141 kStatsValueNameAvailableSendBandwidth, | |
142 kStatsValueNameAvgEncodeMs, | |
143 kStatsValueNameBandwidthLimitedResolution, | |
144 kStatsValueNameBucketDelay, | |
145 kStatsValueNameCaptureStartNtpTimeMs, | |
146 kStatsValueNameCandidateIPAddress, | |
147 kStatsValueNameCandidateNetworkType, | |
148 kStatsValueNameCandidatePortNumber, | |
149 kStatsValueNameCandidatePriority, | |
150 kStatsValueNameCandidateTransportType, | |
151 kStatsValueNameCandidateType, | |
152 kStatsValueNameChannelId, | |
153 kStatsValueNameCodecName, | |
154 kStatsValueNameComponent, | |
155 kStatsValueNameContentName, | |
156 kStatsValueNameCpuLimitedResolution, | |
157 kStatsValueNameCurrentDelayMs, | |
158 kStatsValueNameDecodeMs, | |
159 kStatsValueNameDecodingCNG, | |
160 kStatsValueNameDecodingCTN, | |
161 kStatsValueNameDecodingCTSG, | |
162 kStatsValueNameDecodingNormal, | |
163 kStatsValueNameDecodingPLC, | |
164 kStatsValueNameDecodingPLCCNG, | |
165 kStatsValueNameDer, | |
166 kStatsValueNameDtlsCipher, | |
167 kStatsValueNameEchoCancellationQualityMin, | |
168 kStatsValueNameEchoDelayMedian, | |
169 kStatsValueNameEchoDelayStdDev, | |
170 kStatsValueNameEchoReturnLoss, | |
171 kStatsValueNameEchoReturnLossEnhancement, | |
172 kStatsValueNameEncodeUsagePercent, | |
173 kStatsValueNameExpandRate, | |
174 kStatsValueNameFingerprint, | |
175 kStatsValueNameFingerprintAlgorithm, | |
176 kStatsValueNameFirsReceived, | |
177 kStatsValueNameFirsSent, | |
178 kStatsValueNameFrameHeightInput, | |
179 kStatsValueNameFrameHeightReceived, | |
180 kStatsValueNameFrameHeightSent, | |
181 kStatsValueNameFrameRateDecoded, | |
182 kStatsValueNameFrameRateInput, | |
183 kStatsValueNameFrameRateOutput, | |
184 kStatsValueNameFrameRateReceived, | |
185 kStatsValueNameFrameRateSent, | |
186 kStatsValueNameFrameWidthInput, | |
187 kStatsValueNameFrameWidthReceived, | |
188 kStatsValueNameFrameWidthSent, | |
189 kStatsValueNameInitiator, | |
190 kStatsValueNameIssuerId, | |
191 kStatsValueNameJitterBufferMs, | |
192 kStatsValueNameJitterReceived, | |
193 kStatsValueNameLabel, | |
194 kStatsValueNameLocalAddress, | |
195 kStatsValueNameLocalCandidateId, | |
196 kStatsValueNameLocalCandidateType, | |
197 kStatsValueNameLocalCertificateId, | |
198 kStatsValueNameMaxDecodeMs, | |
199 kStatsValueNameMinPlayoutDelayMs, | |
200 kStatsValueNameNacksReceived, | |
201 kStatsValueNameNacksSent, | |
202 kStatsValueNamePlisReceived, | |
203 kStatsValueNamePlisSent, | |
204 kStatsValueNamePreemptiveExpandRate, | |
205 kStatsValueNamePreferredJitterBufferMs, | |
206 kStatsValueNameRemoteAddress, | |
207 kStatsValueNameRemoteCandidateId, | |
208 kStatsValueNameRemoteCandidateType, | |
209 kStatsValueNameRemoteCertificateId, | |
210 kStatsValueNameRenderDelayMs, | |
211 kStatsValueNameRetransmitBitrate, | |
212 kStatsValueNameRtt, | |
213 kStatsValueNameSecondaryDecodedRate, | |
214 kStatsValueNameSendPacketsDiscarded, | |
215 kStatsValueNameSpeechExpandRate, | |
216 kStatsValueNameSrtpCipher, | |
217 kStatsValueNameTargetDelayMs, | |
218 kStatsValueNameTargetEncBitrate, | |
219 kStatsValueNameTrackId, | |
220 kStatsValueNameTransmitBitrate, | |
221 kStatsValueNameTransportType, | |
222 kStatsValueNameTypingNoiseState, | |
223 kStatsValueNameViewLimitedResolution, | |
224 kStatsValueNameWritable, | |
225 }; | |
226 | |
227 class IdBase : public rtc::RefCountInterface { | |
228 public: | |
229 ~IdBase() override; | |
230 StatsType type() const; | |
231 | |
232 // Users of IdBase will be using the Id typedef, which is compatible with | |
233 // this Equals() function. It simply calls the protected (and overridden) | |
234 // Equals() method. | |
235 bool Equals(const rtc::scoped_refptr<IdBase>& other) const { | |
236 return Equals(*other.get()); | |
237 } | |
238 | |
239 virtual std::string ToString() const = 0; | |
240 | |
241 protected: | |
242 // Protected since users of the IdBase type will be using the Id typedef. | |
243 virtual bool Equals(const IdBase& other) const; | |
244 | |
245 IdBase(StatsType type); // Only meant for derived classes. | |
246 const StatsType type_; | |
247 | |
248 static const char kSeparator = '_'; | |
249 }; | |
250 | |
251 typedef rtc::scoped_refptr<IdBase> Id; | |
252 | |
253 struct Value { | |
254 enum Type { | |
255 kInt, // int. | |
256 kInt64, // int64_t. | |
257 kFloat, // float. | |
258 kString, // std::string | |
259 kStaticString, // const char*. | |
260 kBool, // bool. | |
261 kId, // Id. | |
262 }; | |
263 | |
264 Value(StatsValueName name, int64_t value, Type int_type); | |
265 Value(StatsValueName name, float f); | |
266 Value(StatsValueName name, const std::string& value); | |
267 Value(StatsValueName name, const char* value); | |
268 Value(StatsValueName name, bool b); | |
269 Value(StatsValueName name, const Id& value); | |
270 | |
271 ~Value(); | |
272 | |
273 // TODO(tommi): This compares name as well as value... | |
274 // I think we should only need to compare the value part and | |
275 // move the name part into a hash map. | |
276 bool Equals(const Value& other) const; | |
277 | |
278 // Comparison operators. Return true iff the current instance is of the | |
279 // correct type and holds the same value. No conversion is performed so | |
280 // a string value of "123" is not equal to an int value of 123 and an int | |
281 // value of 123 is not equal to a float value of 123.0f. | |
282 // One exception to this is that types kInt and kInt64 can be compared and | |
283 // kString and kStaticString too. | |
284 bool operator==(const std::string& value) const; | |
285 bool operator==(const char* value) const; | |
286 bool operator==(int64_t value) const; | |
287 bool operator==(bool value) const; | |
288 bool operator==(float value) const; | |
289 bool operator==(const Id& value) const; | |
290 | |
291 // Getters that allow getting the native value directly. | |
292 // The caller must know the type beforehand or else hit a check. | |
293 int int_val() const; | |
294 int64_t int64_val() const; | |
295 float float_val() const; | |
296 const char* static_string_val() const; | |
297 const std::string& string_val() const; | |
298 bool bool_val() const; | |
299 const Id& id_val() const; | |
300 | |
301 // Returns the string representation of |name|. | |
302 const char* display_name() const; | |
303 | |
304 // Converts the native value to a string representation of the value. | |
305 std::string ToString() const; | |
306 | |
307 Type type() const { return type_; } | |
308 | |
309 // TODO(tommi): Move |name| and |display_name| out of the Value struct. | |
310 const StatsValueName name; | |
311 | |
312 private: | |
313 const Type type_; | |
314 // TODO(tommi): Use C++ 11 union and make value_ const. | |
315 union InternalType { | |
316 int int_; | |
317 int64_t int64_; | |
318 float float_; | |
319 bool bool_; | |
320 std::string* string_; | |
321 const char* static_string_; | |
322 Id* id_; | |
323 } value_; | |
324 | |
325 private: | |
326 RTC_DISALLOW_COPY_AND_ASSIGN(Value); | |
327 }; | |
328 | |
329 // TODO(tommi): Consider using a similar approach to how we store Ids using | |
330 // scoped_refptr for values. | |
331 typedef rtc::linked_ptr<Value> ValuePtr; | |
332 typedef std::map<StatsValueName, ValuePtr> Values; | |
333 | |
334 // Ownership of |id| is passed to |this|. | |
335 explicit StatsReport(const Id& id); | |
336 | |
337 // Factory functions for various types of stats IDs. | |
338 static Id NewBandwidthEstimationId(); | |
339 static Id NewTypedId(StatsType type, const std::string& id); | |
340 static Id NewTypedIntId(StatsType type, int id); | |
341 static Id NewIdWithDirection( | |
342 StatsType type, const std::string& id, Direction direction); | |
343 static Id NewCandidateId(bool local, const std::string& id); | |
344 static Id NewComponentId( | |
345 const std::string& content_name, int component); | |
346 static Id NewCandidatePairId( | |
347 const std::string& content_name, int component, int index); | |
348 | |
349 const Id& id() const { return id_; } | |
350 StatsType type() const { return id_->type(); } | |
351 double timestamp() const { return timestamp_; } | |
352 void set_timestamp(double t) { timestamp_ = t; } | |
353 bool empty() const { return values_.empty(); } | |
354 const Values& values() const { return values_; } | |
355 | |
356 const char* TypeToString() const; | |
357 | |
358 void AddString(StatsValueName name, const std::string& value); | |
359 void AddString(StatsValueName name, const char* value); | |
360 void AddInt64(StatsValueName name, int64_t value); | |
361 void AddInt(StatsValueName name, int value); | |
362 void AddFloat(StatsValueName name, float value); | |
363 void AddBoolean(StatsValueName name, bool value); | |
364 void AddId(StatsValueName name, const Id& value); | |
365 | |
366 const Value* FindValue(StatsValueName name) const; | |
367 | |
368 private: | |
369 // The unique identifier for this object. | |
370 // This is used as a key for this report in ordered containers, | |
371 // so it must never be changed. | |
372 const Id id_; | |
373 double timestamp_; // Time since 1970-01-01T00:00:00Z in milliseconds. | |
374 Values values_; | |
375 | |
376 RTC_DISALLOW_COPY_AND_ASSIGN(StatsReport); | |
377 }; | |
378 | |
379 // Typedef for an array of const StatsReport pointers. | |
380 // Ownership of the pointers held by this implementation is assumed to lie | |
381 // elsewhere and lifetime guarantees are made by the implementation that uses | |
382 // this type. In the StatsCollector, object ownership lies with the | |
383 // StatsCollection class. | |
384 typedef std::vector<const StatsReport*> StatsReports; | |
385 | |
386 // A map from the report id to the report. | |
387 // This class wraps an STL container and provides a limited set of | |
388 // functionality in order to keep things simple. | |
389 class StatsCollection { | |
390 public: | |
391 StatsCollection(); | |
392 ~StatsCollection(); | |
393 | |
394 typedef std::list<StatsReport*> Container; | |
395 typedef Container::iterator iterator; | |
396 typedef Container::const_iterator const_iterator; | |
397 | |
398 const_iterator begin() const; | |
399 const_iterator end() const; | |
400 size_t size() const; | |
401 | |
402 // Creates a new report object with |id| that does not already | |
403 // exist in the list of reports. | |
404 StatsReport* InsertNew(const StatsReport::Id& id); | |
405 StatsReport* FindOrAddNew(const StatsReport::Id& id); | |
406 StatsReport* ReplaceOrAddNew(const StatsReport::Id& id); | |
407 | |
408 // Looks for a report with the given |id|. If one is not found, NULL | |
409 // will be returned. | |
410 StatsReport* Find(const StatsReport::Id& id); | |
411 | |
412 private: | |
413 Container list_; | |
414 rtc::ThreadChecker thread_checker_; | |
415 }; | |
416 | |
417 } // namespace webrtc | |
418 | |
419 #endif // TALK_APP_WEBRTC_STATSTYPES_H_ | |
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