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| 1 /* |
| 2 * Copyright 2015 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #import "webrtc/api/objc/RTCPeerConnection.h" |
| 12 |
| 13 #include "webrtc/base/checks.h" |
| 14 |
| 15 #import "webrtc/api/objc/RTCPeerConnection+Private.h" |
| 16 #import "webrtc/api/objc/RTCConfiguration+Private.h" |
| 17 #import "webrtc/api/objc/RTCDataChannel+Private.h" |
| 18 #import "webrtc/api/objc/RTCIceCandidate+Private.h" |
| 19 #import "webrtc/api/objc/RTCMediaConstraints+Private.h" |
| 20 #import "webrtc/api/objc/RTCMediaStream+Private.h" |
| 21 #import "webrtc/api/objc/RTCPeerConnectionFactory+Private.h" |
| 22 #import "webrtc/api/objc/RTCSessionDescription+Private.h" |
| 23 #import "webrtc/api/objc/RTCStatsReport+Private.h" |
| 24 #import "webrtc/base/objc/RTCLogging.h" |
| 25 #import "webrtc/base/objc/NSString+StdString.h" |
| 26 |
| 27 NSString * const kRTCPeerConnectionErrorDomain = |
| 28 @"org.webrtc.RTCPeerConnection"; |
| 29 int const kRTCPeerConnnectionSessionDescriptionError = -1; |
| 30 |
| 31 namespace webrtc { |
| 32 |
| 33 class CreateSessionDescriptionObserverAdapter |
| 34 : public CreateSessionDescriptionObserver { |
| 35 public: |
| 36 CreateSessionDescriptionObserverAdapter( |
| 37 void (^completionHandler)(RTCSessionDescription *sessionDescription, |
| 38 NSError *error)) { |
| 39 completion_handler_ = completionHandler; |
| 40 } |
| 41 |
| 42 ~CreateSessionDescriptionObserverAdapter() { |
| 43 completion_handler_ = nil; |
| 44 } |
| 45 |
| 46 void OnSuccess(SessionDescriptionInterface *desc) override { |
| 47 RTC_DCHECK(completion_handler_); |
| 48 rtc::scoped_ptr<webrtc::SessionDescriptionInterface> description = |
| 49 rtc::scoped_ptr<webrtc::SessionDescriptionInterface>(desc); |
| 50 RTCSessionDescription* session = |
| 51 [[RTCSessionDescription alloc] initWithNativeDescription: |
| 52 description.get()]; |
| 53 completion_handler_(session, nil); |
| 54 completion_handler_ = nil; |
| 55 } |
| 56 |
| 57 void OnFailure(const std::string& error) override { |
| 58 RTC_DCHECK(completion_handler_); |
| 59 NSString* str = [NSString stringForStdString:error]; |
| 60 NSError* err = |
| 61 [NSError errorWithDomain:kRTCPeerConnectionErrorDomain |
| 62 code:kRTCPeerConnnectionSessionDescriptionError |
| 63 userInfo:@{ NSLocalizedDescriptionKey : str }]; |
| 64 completion_handler_(nil, err); |
| 65 completion_handler_ = nil; |
| 66 } |
| 67 |
| 68 private: |
| 69 void (^completion_handler_) |
| 70 (RTCSessionDescription *sessionDescription, NSError *error); |
| 71 }; |
| 72 |
| 73 class SetSessionDescriptionObserverAdapter : |
| 74 public SetSessionDescriptionObserver { |
| 75 public: |
| 76 SetSessionDescriptionObserverAdapter(void (^completionHandler) |
| 77 (NSError *error)) { |
| 78 completion_handler_ = completionHandler; |
| 79 } |
| 80 |
| 81 ~SetSessionDescriptionObserverAdapter() { |
| 82 completion_handler_ = nil; |
| 83 } |
| 84 |
| 85 void OnSuccess() override { |
| 86 RTC_DCHECK(completion_handler_); |
| 87 completion_handler_(nil); |
| 88 completion_handler_ = nil; |
| 89 } |
| 90 |
| 91 void OnFailure(const std::string& error) override { |
| 92 RTC_DCHECK(completion_handler_); |
| 93 NSString* str = [NSString stringForStdString:error]; |
| 94 NSError* err = |
| 95 [NSError errorWithDomain:kRTCPeerConnectionErrorDomain |
| 96 code:kRTCPeerConnnectionSessionDescriptionError |
| 97 userInfo:@{ NSLocalizedDescriptionKey : str }]; |
| 98 completion_handler_(err); |
| 99 completion_handler_ = nil; |
| 100 } |
| 101 |
| 102 private: |
| 103 void (^completion_handler_)(NSError *error); |
| 104 }; |
| 105 |
| 106 PeerConnectionDelegateAdapter::PeerConnectionDelegateAdapter( |
| 107 RTCPeerConnection *peerConnection) { |
| 108 peer_connection_ = peerConnection; |
| 109 } |
| 110 |
| 111 PeerConnectionDelegateAdapter::~PeerConnectionDelegateAdapter() { |
| 112 peer_connection_ = nil; |
| 113 } |
| 114 |
| 115 void PeerConnectionDelegateAdapter::OnSignalingChange( |
| 116 PeerConnectionInterface::SignalingState new_state) { |
| 117 RTCSignalingState state = |
| 118 [[RTCPeerConnection class] signalingStateForNativeState:new_state]; |
| 119 RTCPeerConnection *peer_connection = peer_connection_; |
| 120 [peer_connection.delegate peerConnection:peer_connection |
| 121 didChangeSignalingState:state]; |
| 122 } |
| 123 |
| 124 void PeerConnectionDelegateAdapter::OnAddStream( |
| 125 MediaStreamInterface *stream) { |
| 126 RTCMediaStream *mediaStream = |
| 127 [[RTCMediaStream alloc] initWithNativeMediaStream:stream]; |
| 128 RTCPeerConnection *peer_connection = peer_connection_; |
| 129 [peer_connection.delegate peerConnection:peer_connection |
| 130 didAddStream:mediaStream]; |
| 131 } |
| 132 |
| 133 void PeerConnectionDelegateAdapter::OnRemoveStream( |
| 134 MediaStreamInterface *stream) { |
| 135 RTCMediaStream *mediaStream = |
| 136 [[RTCMediaStream alloc] initWithNativeMediaStream:stream]; |
| 137 RTCPeerConnection *peer_connection = peer_connection_; |
| 138 [peer_connection.delegate peerConnection:peer_connection |
| 139 didRemoveStream:mediaStream]; |
| 140 } |
| 141 |
| 142 void PeerConnectionDelegateAdapter::OnDataChannel( |
| 143 DataChannelInterface *data_channel) { |
| 144 RTCDataChannel *dataChannel = |
| 145 [[RTCDataChannel alloc] initWithNativeDataChannel:data_channel]; |
| 146 RTCPeerConnection *peer_connection = peer_connection_; |
| 147 [peer_connection.delegate peerConnection:peer_connection |
| 148 didOpenDataChannel:dataChannel]; |
| 149 } |
| 150 |
| 151 void PeerConnectionDelegateAdapter::OnRenegotiationNeeded() { |
| 152 RTCPeerConnection *peer_connection = peer_connection_; |
| 153 [peer_connection.delegate peerConnectionShouldNegotiate:peer_connection]; |
| 154 } |
| 155 |
| 156 void PeerConnectionDelegateAdapter::OnIceConnectionChange( |
| 157 PeerConnectionInterface::IceConnectionState new_state) { |
| 158 RTCIceConnectionState state = |
| 159 [[RTCPeerConnection class] iceConnectionStateForNativeState:new_state]; |
| 160 RTCPeerConnection *peer_connection = peer_connection_; |
| 161 [peer_connection.delegate peerConnection:peer_connection |
| 162 didChangeIceConnectionState:state]; |
| 163 } |
| 164 |
| 165 void PeerConnectionDelegateAdapter::OnIceGatheringChange( |
| 166 PeerConnectionInterface::IceGatheringState new_state) { |
| 167 RTCIceGatheringState state = |
| 168 [[RTCPeerConnection class] iceGatheringStateForNativeState:new_state]; |
| 169 RTCPeerConnection *peer_connection = peer_connection_; |
| 170 [peer_connection.delegate peerConnection:peer_connection |
| 171 didChangeIceGatheringState:state]; |
| 172 } |
| 173 |
| 174 void PeerConnectionDelegateAdapter::OnIceCandidate( |
| 175 const IceCandidateInterface *candidate) { |
| 176 RTCIceCandidate *iceCandidate = |
| 177 [[RTCIceCandidate alloc] initWithNativeCandidate:candidate]; |
| 178 RTCPeerConnection *peer_connection = peer_connection_; |
| 179 [peer_connection.delegate peerConnection:peer_connection |
| 180 didGenerateIceCandidate:iceCandidate]; |
| 181 } |
| 182 } // namespace webrtc |
| 183 |
| 184 |
| 185 @implementation RTCPeerConnection { |
| 186 NSMutableArray *_localStreams; |
| 187 rtc::scoped_ptr<webrtc::PeerConnectionDelegateAdapter> _observer; |
| 188 rtc::scoped_refptr<webrtc::PeerConnectionInterface> _peerConnection; |
| 189 } |
| 190 |
| 191 @synthesize delegate = _delegate; |
| 192 |
| 193 - (instancetype)initWithFactory:(RTCPeerConnectionFactory *)factory |
| 194 configuration:(RTCConfiguration *)configuration |
| 195 constraints:(RTCMediaConstraints *)constraints |
| 196 delegate:(id<RTCPeerConnectionDelegate>)delegate { |
| 197 NSParameterAssert(factory); |
| 198 if (self = [super init]) { |
| 199 _observer.reset(new webrtc::PeerConnectionDelegateAdapter(self)); |
| 200 webrtc::PeerConnectionInterface::RTCConfiguration config = |
| 201 configuration.nativeConfiguration; |
| 202 webrtc::MediaConstraints *nativeConstraints = |
| 203 constraints.nativeConstraints.get(); |
| 204 _peerConnection = |
| 205 factory.nativeFactory->CreatePeerConnection(config, |
| 206 nativeConstraints, |
| 207 nullptr, |
| 208 nullptr, |
| 209 _observer.get()); |
| 210 _localStreams = [[NSMutableArray alloc] init]; |
| 211 _delegate = delegate; |
| 212 } |
| 213 return self; |
| 214 } |
| 215 |
| 216 - (NSArray *)localStreams { |
| 217 return [_localStreams copy]; |
| 218 } |
| 219 |
| 220 - (RTCSessionDescription *)localDescription { |
| 221 const webrtc::SessionDescriptionInterface *description = |
| 222 _peerConnection->local_description(); |
| 223 return description ? |
| 224 [[RTCSessionDescription alloc] initWithNativeDescription:description] |
| 225 : nil; |
| 226 } |
| 227 |
| 228 - (RTCSessionDescription *)remoteDescription { |
| 229 const webrtc::SessionDescriptionInterface *description = |
| 230 _peerConnection->remote_description(); |
| 231 return description ? |
| 232 [[RTCSessionDescription alloc] initWithNativeDescription:description] |
| 233 : nil; |
| 234 } |
| 235 |
| 236 - (RTCSignalingState)signalingState { |
| 237 return [[self class] |
| 238 signalingStateForNativeState:_peerConnection->signaling_state()]; |
| 239 } |
| 240 |
| 241 - (RTCIceConnectionState)iceConnectionState { |
| 242 return [[self class] iceConnectionStateForNativeState: |
| 243 _peerConnection->ice_connection_state()]; |
| 244 } |
| 245 |
| 246 - (RTCIceGatheringState)iceGatheringState { |
| 247 return [[self class] iceGatheringStateForNativeState: |
| 248 _peerConnection->ice_gathering_state()]; |
| 249 } |
| 250 |
| 251 - (void)close { |
| 252 _peerConnection->Close(); |
| 253 } |
| 254 |
| 255 - (void)addIceCandidate:(RTCIceCandidate *)candidate { |
| 256 rtc::scoped_ptr<const webrtc::IceCandidateInterface> iceCandidate( |
| 257 candidate.nativeCandidate); |
| 258 _peerConnection->AddIceCandidate(iceCandidate.get()); |
| 259 } |
| 260 |
| 261 - (void)addStream:(RTCMediaStream *)stream { |
| 262 if (_peerConnection->AddStream(stream.nativeMediaStream)) { |
| 263 RTCLogError(@"Failed to add stream: %@", stream); |
| 264 return; |
| 265 } |
| 266 [_localStreams addObject:stream]; |
| 267 } |
| 268 |
| 269 - (void)removeStream:(RTCMediaStream *)stream { |
| 270 _peerConnection->RemoveStream(stream.nativeMediaStream); |
| 271 [_localStreams removeObject:stream]; |
| 272 } |
| 273 |
| 274 - (void)offerForConstraints:(RTCMediaConstraints *)constraints |
| 275 completionHandler: |
| 276 (void (^)(RTCSessionDescription *sessionDescription, |
| 277 NSError *error))completionHandler { |
| 278 rtc::scoped_refptr<webrtc::CreateSessionDescriptionObserverAdapter> |
| 279 observer(new rtc::RefCountedObject |
| 280 <webrtc::CreateSessionDescriptionObserverAdapter>(completionHandler)); |
| 281 _peerConnection->CreateOffer(observer, constraints.nativeConstraints.get()); |
| 282 } |
| 283 |
| 284 - (void)answerForConstraints:(RTCMediaConstraints *)constraints |
| 285 completionHandler: |
| 286 (void (^)(RTCSessionDescription *sessionDescription, |
| 287 NSError *error))completionHandler { |
| 288 rtc::scoped_refptr<webrtc::CreateSessionDescriptionObserverAdapter> |
| 289 observer(new rtc::RefCountedObject |
| 290 <webrtc::CreateSessionDescriptionObserverAdapter>(completionHandler)); |
| 291 _peerConnection->CreateAnswer(observer, constraints.nativeConstraints.get()); |
| 292 } |
| 293 |
| 294 - (void)setLocalDescription:(RTCSessionDescription *)sdp |
| 295 completionHandler:(void (^)(NSError *error))completionHandler { |
| 296 rtc::scoped_refptr<webrtc::SetSessionDescriptionObserverAdapter> observer( |
| 297 new rtc::RefCountedObject<webrtc::SetSessionDescriptionObserverAdapter>( |
| 298 completionHandler)); |
| 299 _peerConnection->SetLocalDescription(observer, sdp.nativeDescription); |
| 300 } |
| 301 |
| 302 - (void)setRemoteDescription:(RTCSessionDescription *)sdp |
| 303 completionHandler:(void (^)(NSError *error))completionHandler { |
| 304 rtc::scoped_refptr<webrtc::SetSessionDescriptionObserverAdapter> observer( |
| 305 new rtc::RefCountedObject<webrtc::SetSessionDescriptionObserverAdapter>( |
| 306 completionHandler)); |
| 307 _peerConnection->SetRemoteDescription(observer, sdp.nativeDescription); |
| 308 } |
| 309 |
| 310 #pragma mark - Private |
| 311 |
| 312 + (webrtc::PeerConnectionInterface::SignalingState)nativeSignalingStateForState: |
| 313 (RTCSignalingState)state { |
| 314 switch (state) { |
| 315 case RTCSignalingStateStable: |
| 316 return webrtc::PeerConnectionInterface::kStable; |
| 317 case RTCSignalingStateHaveLocalOffer: |
| 318 return webrtc::PeerConnectionInterface::kHaveLocalOffer; |
| 319 case RTCSignalingStateHaveLocalPrAnswer: |
| 320 return webrtc::PeerConnectionInterface::kHaveLocalPrAnswer; |
| 321 case RTCSignalingStateHaveRemoteOffer: |
| 322 return webrtc::PeerConnectionInterface::kHaveRemoteOffer; |
| 323 case RTCSignalingStateHaveRemotePrAnswer: |
| 324 return webrtc::PeerConnectionInterface::kHaveRemotePrAnswer; |
| 325 case RTCSignalingStateClosed: |
| 326 return webrtc::PeerConnectionInterface::kClosed; |
| 327 } |
| 328 } |
| 329 |
| 330 + (RTCSignalingState)signalingStateForNativeState: |
| 331 (webrtc::PeerConnectionInterface::SignalingState)nativeState { |
| 332 switch (nativeState) { |
| 333 case webrtc::PeerConnectionInterface::kStable: |
| 334 return RTCSignalingStateStable; |
| 335 case webrtc::PeerConnectionInterface::kHaveLocalOffer: |
| 336 return RTCSignalingStateHaveLocalOffer; |
| 337 case webrtc::PeerConnectionInterface::kHaveLocalPrAnswer: |
| 338 return RTCSignalingStateHaveLocalPrAnswer; |
| 339 case webrtc::PeerConnectionInterface::kHaveRemoteOffer: |
| 340 return RTCSignalingStateHaveRemoteOffer; |
| 341 case webrtc::PeerConnectionInterface::kHaveRemotePrAnswer: |
| 342 return RTCSignalingStateHaveRemotePrAnswer; |
| 343 case webrtc::PeerConnectionInterface::kClosed: |
| 344 return RTCSignalingStateClosed; |
| 345 } |
| 346 } |
| 347 |
| 348 + (NSString *)stringForSignalingState:(RTCSignalingState)state { |
| 349 switch (state) { |
| 350 case RTCSignalingStateStable: |
| 351 return @"STABLE"; |
| 352 case RTCSignalingStateHaveLocalOffer: |
| 353 return @"HAVE_LOCAL_OFFER"; |
| 354 case RTCSignalingStateHaveLocalPrAnswer: |
| 355 return @"HAVE_LOCAL_PRANSWER"; |
| 356 case RTCSignalingStateHaveRemoteOffer: |
| 357 return @"HAVE_REMOTE_OFFER"; |
| 358 case RTCSignalingStateHaveRemotePrAnswer: |
| 359 return @"HAVE_REMOTE_PRANSWER"; |
| 360 case RTCSignalingStateClosed: |
| 361 return @"CLOSED"; |
| 362 } |
| 363 } |
| 364 |
| 365 + (webrtc::PeerConnectionInterface::IceConnectionState) |
| 366 nativeIceConnectionStateForState:(RTCIceConnectionState)state { |
| 367 switch (state) { |
| 368 case RTCIceConnectionStateNew: |
| 369 return webrtc::PeerConnectionInterface::kIceConnectionNew; |
| 370 case RTCIceConnectionStateChecking: |
| 371 return webrtc::PeerConnectionInterface::kIceConnectionChecking; |
| 372 case RTCIceConnectionStateConnected: |
| 373 return webrtc::PeerConnectionInterface::kIceConnectionConnected; |
| 374 case RTCIceConnectionStateCompleted: |
| 375 return webrtc::PeerConnectionInterface::kIceConnectionCompleted; |
| 376 case RTCIceConnectionStateFailed: |
| 377 return webrtc::PeerConnectionInterface::kIceConnectionFailed; |
| 378 case RTCIceConnectionStateDisconnected: |
| 379 return webrtc::PeerConnectionInterface::kIceConnectionDisconnected; |
| 380 case RTCIceConnectionStateClosed: |
| 381 return webrtc::PeerConnectionInterface::kIceConnectionClosed; |
| 382 case RTCIceConnectionStateMax: |
| 383 return webrtc::PeerConnectionInterface::kIceConnectionMax; |
| 384 } |
| 385 } |
| 386 |
| 387 + (RTCIceConnectionState)iceConnectionStateForNativeState: |
| 388 (webrtc::PeerConnectionInterface::IceConnectionState)nativeState { |
| 389 switch (nativeState) { |
| 390 case webrtc::PeerConnectionInterface::kIceConnectionNew: |
| 391 return RTCIceConnectionStateNew; |
| 392 case webrtc::PeerConnectionInterface::kIceConnectionChecking: |
| 393 return RTCIceConnectionStateChecking; |
| 394 case webrtc::PeerConnectionInterface::kIceConnectionConnected: |
| 395 return RTCIceConnectionStateConnected; |
| 396 case webrtc::PeerConnectionInterface::kIceConnectionCompleted: |
| 397 return RTCIceConnectionStateCompleted; |
| 398 case webrtc::PeerConnectionInterface::kIceConnectionFailed: |
| 399 return RTCIceConnectionStateFailed; |
| 400 case webrtc::PeerConnectionInterface::kIceConnectionDisconnected: |
| 401 return RTCIceConnectionStateDisconnected; |
| 402 case webrtc::PeerConnectionInterface::kIceConnectionClosed: |
| 403 return RTCIceConnectionStateClosed; |
| 404 case webrtc::PeerConnectionInterface::kIceConnectionMax: |
| 405 return RTCIceConnectionStateMax; |
| 406 } |
| 407 } |
| 408 |
| 409 + (NSString *)stringForIceConnectionState:(RTCIceConnectionState)state { |
| 410 switch (state) { |
| 411 case RTCIceConnectionStateNew: |
| 412 return @"NEW"; |
| 413 case RTCIceConnectionStateChecking: |
| 414 return @"CHECKING"; |
| 415 case RTCIceConnectionStateConnected: |
| 416 return @"CONNECTED"; |
| 417 case RTCIceConnectionStateCompleted: |
| 418 return @"COMPLETED"; |
| 419 case RTCIceConnectionStateFailed: |
| 420 return @"FAILED"; |
| 421 case RTCIceConnectionStateDisconnected: |
| 422 return @"DISCONNECTED"; |
| 423 case RTCIceConnectionStateClosed: |
| 424 return @"CLOSED"; |
| 425 case RTCIceConnectionStateMax: |
| 426 return @"MAX"; |
| 427 } |
| 428 } |
| 429 |
| 430 + (webrtc::PeerConnectionInterface::IceGatheringState) |
| 431 nativeIceGatheringStateForState:(RTCIceGatheringState)state { |
| 432 switch (state) { |
| 433 case RTCIceGatheringStateNew: |
| 434 return webrtc::PeerConnectionInterface::kIceGatheringNew; |
| 435 case RTCIceGatheringStateGathering: |
| 436 return webrtc::PeerConnectionInterface::kIceGatheringGathering; |
| 437 case RTCIceGatheringStateComplete: |
| 438 return webrtc::PeerConnectionInterface::kIceGatheringComplete; |
| 439 } |
| 440 } |
| 441 |
| 442 + (RTCIceGatheringState)iceGatheringStateForNativeState: |
| 443 (webrtc::PeerConnectionInterface::IceGatheringState)nativeState { |
| 444 switch (nativeState) { |
| 445 case webrtc::PeerConnectionInterface::kIceGatheringNew: |
| 446 return RTCIceGatheringStateNew; |
| 447 case webrtc::PeerConnectionInterface::kIceGatheringGathering: |
| 448 return RTCIceGatheringStateGathering; |
| 449 case webrtc::PeerConnectionInterface::kIceGatheringComplete: |
| 450 return RTCIceGatheringStateComplete; |
| 451 } |
| 452 } |
| 453 |
| 454 + (NSString *)stringForIceGatheringState:(RTCIceGatheringState)state { |
| 455 switch (state) { |
| 456 case RTCIceGatheringStateNew: |
| 457 return @"NEW"; |
| 458 case RTCIceGatheringStateGathering: |
| 459 return @"GATHERING"; |
| 460 case RTCIceGatheringStateComplete: |
| 461 return @"COMPLETE"; |
| 462 } |
| 463 } |
| 464 |
| 465 + (webrtc::PeerConnectionInterface::StatsOutputLevel) |
| 466 nativeStatsOutputLevelForLevel:(RTCStatsOutputLevel)level { |
| 467 switch (level) { |
| 468 case RTCStatsOutputLevelStandard: |
| 469 return webrtc::PeerConnectionInterface::kStatsOutputLevelStandard; |
| 470 case RTCStatsOutputLevelDebug: |
| 471 return webrtc::PeerConnectionInterface::kStatsOutputLevelDebug; |
| 472 } |
| 473 } |
| 474 |
| 475 - (rtc::scoped_refptr<webrtc::PeerConnectionInterface>)nativePeerConnection { |
| 476 return _peerConnection; |
| 477 } |
| 478 |
| 479 @end |
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