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Side by Side Diff: talk/examples/peerconnection/client/conductor.cc

Issue 1235563006: Move talk/examples/* to webrtc/examples. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: 201508051337 Created 5 years, 4 months ago
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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 #include "talk/examples/peerconnection/client/conductor.h"
29
30 #include <utility>
31 #include <vector>
32
33 #include "talk/app/webrtc/videosourceinterface.h"
34 #include "talk/examples/peerconnection/client/defaults.h"
35 #include "talk/media/devices/devicemanager.h"
36 #include "talk/app/webrtc/test/fakeconstraints.h"
37 #include "webrtc/base/common.h"
38 #include "webrtc/base/json.h"
39 #include "webrtc/base/logging.h"
40
41 // Names used for a IceCandidate JSON object.
42 const char kCandidateSdpMidName[] = "sdpMid";
43 const char kCandidateSdpMlineIndexName[] = "sdpMLineIndex";
44 const char kCandidateSdpName[] = "candidate";
45
46 // Names used for a SessionDescription JSON object.
47 const char kSessionDescriptionTypeName[] = "type";
48 const char kSessionDescriptionSdpName[] = "sdp";
49
50 #define DTLS_ON true
51 #define DTLS_OFF false
52
53 class DummySetSessionDescriptionObserver
54 : public webrtc::SetSessionDescriptionObserver {
55 public:
56 static DummySetSessionDescriptionObserver* Create() {
57 return
58 new rtc::RefCountedObject<DummySetSessionDescriptionObserver>();
59 }
60 virtual void OnSuccess() {
61 LOG(INFO) << __FUNCTION__;
62 }
63 virtual void OnFailure(const std::string& error) {
64 LOG(INFO) << __FUNCTION__ << " " << error;
65 }
66
67 protected:
68 DummySetSessionDescriptionObserver() {}
69 ~DummySetSessionDescriptionObserver() {}
70 };
71
72 Conductor::Conductor(PeerConnectionClient* client, MainWindow* main_wnd)
73 : peer_id_(-1),
74 loopback_(false),
75 client_(client),
76 main_wnd_(main_wnd) {
77 client_->RegisterObserver(this);
78 main_wnd->RegisterObserver(this);
79 }
80
81 Conductor::~Conductor() {
82 ASSERT(peer_connection_.get() == NULL);
83 }
84
85 bool Conductor::connection_active() const {
86 return peer_connection_.get() != NULL;
87 }
88
89 void Conductor::Close() {
90 client_->SignOut();
91 DeletePeerConnection();
92 }
93
94 bool Conductor::InitializePeerConnection() {
95 ASSERT(peer_connection_factory_.get() == NULL);
96 ASSERT(peer_connection_.get() == NULL);
97
98 peer_connection_factory_ = webrtc::CreatePeerConnectionFactory();
99
100 if (!peer_connection_factory_.get()) {
101 main_wnd_->MessageBox("Error",
102 "Failed to initialize PeerConnectionFactory", true);
103 DeletePeerConnection();
104 return false;
105 }
106
107 if (!CreatePeerConnection(DTLS_ON)) {
108 main_wnd_->MessageBox("Error",
109 "CreatePeerConnection failed", true);
110 DeletePeerConnection();
111 }
112 AddStreams();
113 return peer_connection_.get() != NULL;
114 }
115
116 bool Conductor::ReinitializePeerConnectionForLoopback() {
117 loopback_ = true;
118 rtc::scoped_refptr<webrtc::StreamCollectionInterface> streams(
119 peer_connection_->local_streams());
120 peer_connection_ = NULL;
121 if (CreatePeerConnection(DTLS_OFF)) {
122 for (size_t i = 0; i < streams->count(); ++i)
123 peer_connection_->AddStream(streams->at(i));
124 peer_connection_->CreateOffer(this, NULL);
125 }
126 return peer_connection_.get() != NULL;
127 }
128
129 bool Conductor::CreatePeerConnection(bool dtls) {
130 ASSERT(peer_connection_factory_.get() != NULL);
131 ASSERT(peer_connection_.get() == NULL);
132
133 webrtc::PeerConnectionInterface::IceServers servers;
134 webrtc::PeerConnectionInterface::IceServer server;
135 server.uri = GetPeerConnectionString();
136 servers.push_back(server);
137
138 webrtc::FakeConstraints constraints;
139 if (dtls) {
140 constraints.AddOptional(webrtc::MediaConstraintsInterface::kEnableDtlsSrtp,
141 "true");
142 }
143 else
144 {
145 constraints.AddOptional(webrtc::MediaConstraintsInterface::kEnableDtlsSrtp,
146 "false");
147 }
148
149 peer_connection_ =
150 peer_connection_factory_->CreatePeerConnection(servers,
151 &constraints,
152 NULL,
153 NULL,
154 this);
155 return peer_connection_.get() != NULL;
156 }
157
158 void Conductor::DeletePeerConnection() {
159 peer_connection_ = NULL;
160 active_streams_.clear();
161 main_wnd_->StopLocalRenderer();
162 main_wnd_->StopRemoteRenderer();
163 peer_connection_factory_ = NULL;
164 peer_id_ = -1;
165 loopback_ = false;
166 }
167
168 void Conductor::EnsureStreamingUI() {
169 ASSERT(peer_connection_.get() != NULL);
170 if (main_wnd_->IsWindow()) {
171 if (main_wnd_->current_ui() != MainWindow::STREAMING)
172 main_wnd_->SwitchToStreamingUI();
173 }
174 }
175
176 //
177 // PeerConnectionObserver implementation.
178 //
179
180 // Called when a remote stream is added
181 void Conductor::OnAddStream(webrtc::MediaStreamInterface* stream) {
182 LOG(INFO) << __FUNCTION__ << " " << stream->label();
183
184 stream->AddRef();
185 main_wnd_->QueueUIThreadCallback(NEW_STREAM_ADDED,
186 stream);
187 }
188
189 void Conductor::OnRemoveStream(webrtc::MediaStreamInterface* stream) {
190 LOG(INFO) << __FUNCTION__ << " " << stream->label();
191 stream->AddRef();
192 main_wnd_->QueueUIThreadCallback(STREAM_REMOVED,
193 stream);
194 }
195
196 void Conductor::OnIceCandidate(const webrtc::IceCandidateInterface* candidate) {
197 LOG(INFO) << __FUNCTION__ << " " << candidate->sdp_mline_index();
198 // For loopback test. To save some connecting delay.
199 if (loopback_) {
200 if (!peer_connection_->AddIceCandidate(candidate)) {
201 LOG(WARNING) << "Failed to apply the received candidate";
202 }
203 return;
204 }
205
206 Json::StyledWriter writer;
207 Json::Value jmessage;
208
209 jmessage[kCandidateSdpMidName] = candidate->sdp_mid();
210 jmessage[kCandidateSdpMlineIndexName] = candidate->sdp_mline_index();
211 std::string sdp;
212 if (!candidate->ToString(&sdp)) {
213 LOG(LS_ERROR) << "Failed to serialize candidate";
214 return;
215 }
216 jmessage[kCandidateSdpName] = sdp;
217 SendMessage(writer.write(jmessage));
218 }
219
220 //
221 // PeerConnectionClientObserver implementation.
222 //
223
224 void Conductor::OnSignedIn() {
225 LOG(INFO) << __FUNCTION__;
226 main_wnd_->SwitchToPeerList(client_->peers());
227 }
228
229 void Conductor::OnDisconnected() {
230 LOG(INFO) << __FUNCTION__;
231
232 DeletePeerConnection();
233
234 if (main_wnd_->IsWindow())
235 main_wnd_->SwitchToConnectUI();
236 }
237
238 void Conductor::OnPeerConnected(int id, const std::string& name) {
239 LOG(INFO) << __FUNCTION__;
240 // Refresh the list if we're showing it.
241 if (main_wnd_->current_ui() == MainWindow::LIST_PEERS)
242 main_wnd_->SwitchToPeerList(client_->peers());
243 }
244
245 void Conductor::OnPeerDisconnected(int id) {
246 LOG(INFO) << __FUNCTION__;
247 if (id == peer_id_) {
248 LOG(INFO) << "Our peer disconnected";
249 main_wnd_->QueueUIThreadCallback(PEER_CONNECTION_CLOSED, NULL);
250 } else {
251 // Refresh the list if we're showing it.
252 if (main_wnd_->current_ui() == MainWindow::LIST_PEERS)
253 main_wnd_->SwitchToPeerList(client_->peers());
254 }
255 }
256
257 void Conductor::OnMessageFromPeer(int peer_id, const std::string& message) {
258 ASSERT(peer_id_ == peer_id || peer_id_ == -1);
259 ASSERT(!message.empty());
260
261 if (!peer_connection_.get()) {
262 ASSERT(peer_id_ == -1);
263 peer_id_ = peer_id;
264
265 if (!InitializePeerConnection()) {
266 LOG(LS_ERROR) << "Failed to initialize our PeerConnection instance";
267 client_->SignOut();
268 return;
269 }
270 } else if (peer_id != peer_id_) {
271 ASSERT(peer_id_ != -1);
272 LOG(WARNING) << "Received a message from unknown peer while already in a "
273 "conversation with a different peer.";
274 return;
275 }
276
277 Json::Reader reader;
278 Json::Value jmessage;
279 if (!reader.parse(message, jmessage)) {
280 LOG(WARNING) << "Received unknown message. " << message;
281 return;
282 }
283 std::string type;
284 std::string json_object;
285
286 rtc::GetStringFromJsonObject(jmessage, kSessionDescriptionTypeName, &type);
287 if (!type.empty()) {
288 if (type == "offer-loopback") {
289 // This is a loopback call.
290 // Recreate the peerconnection with DTLS disabled.
291 if (!ReinitializePeerConnectionForLoopback()) {
292 LOG(LS_ERROR) << "Failed to initialize our PeerConnection instance";
293 DeletePeerConnection();
294 client_->SignOut();
295 }
296 return;
297 }
298
299 std::string sdp;
300 if (!rtc::GetStringFromJsonObject(jmessage, kSessionDescriptionSdpName,
301 &sdp)) {
302 LOG(WARNING) << "Can't parse received session description message.";
303 return;
304 }
305 webrtc::SdpParseError error;
306 webrtc::SessionDescriptionInterface* session_description(
307 webrtc::CreateSessionDescription(type, sdp, &error));
308 if (!session_description) {
309 LOG(WARNING) << "Can't parse received session description message. "
310 << "SdpParseError was: " << error.description;
311 return;
312 }
313 LOG(INFO) << " Received session description :" << message;
314 peer_connection_->SetRemoteDescription(
315 DummySetSessionDescriptionObserver::Create(), session_description);
316 if (session_description->type() ==
317 webrtc::SessionDescriptionInterface::kOffer) {
318 peer_connection_->CreateAnswer(this, NULL);
319 }
320 return;
321 } else {
322 std::string sdp_mid;
323 int sdp_mlineindex = 0;
324 std::string sdp;
325 if (!rtc::GetStringFromJsonObject(jmessage, kCandidateSdpMidName,
326 &sdp_mid) ||
327 !rtc::GetIntFromJsonObject(jmessage, kCandidateSdpMlineIndexName,
328 &sdp_mlineindex) ||
329 !rtc::GetStringFromJsonObject(jmessage, kCandidateSdpName, &sdp)) {
330 LOG(WARNING) << "Can't parse received message.";
331 return;
332 }
333 webrtc::SdpParseError error;
334 rtc::scoped_ptr<webrtc::IceCandidateInterface> candidate(
335 webrtc::CreateIceCandidate(sdp_mid, sdp_mlineindex, sdp, &error));
336 if (!candidate.get()) {
337 LOG(WARNING) << "Can't parse received candidate message. "
338 << "SdpParseError was: " << error.description;
339 return;
340 }
341 if (!peer_connection_->AddIceCandidate(candidate.get())) {
342 LOG(WARNING) << "Failed to apply the received candidate";
343 return;
344 }
345 LOG(INFO) << " Received candidate :" << message;
346 return;
347 }
348 }
349
350 void Conductor::OnMessageSent(int err) {
351 // Process the next pending message if any.
352 main_wnd_->QueueUIThreadCallback(SEND_MESSAGE_TO_PEER, NULL);
353 }
354
355 void Conductor::OnServerConnectionFailure() {
356 main_wnd_->MessageBox("Error", ("Failed to connect to " + server_).c_str(),
357 true);
358 }
359
360 //
361 // MainWndCallback implementation.
362 //
363
364 void Conductor::StartLogin(const std::string& server, int port) {
365 if (client_->is_connected())
366 return;
367 server_ = server;
368 client_->Connect(server, port, GetPeerName());
369 }
370
371 void Conductor::DisconnectFromServer() {
372 if (client_->is_connected())
373 client_->SignOut();
374 }
375
376 void Conductor::ConnectToPeer(int peer_id) {
377 ASSERT(peer_id_ == -1);
378 ASSERT(peer_id != -1);
379
380 if (peer_connection_.get()) {
381 main_wnd_->MessageBox("Error",
382 "We only support connecting to one peer at a time", true);
383 return;
384 }
385
386 if (InitializePeerConnection()) {
387 peer_id_ = peer_id;
388 peer_connection_->CreateOffer(this, NULL);
389 } else {
390 main_wnd_->MessageBox("Error", "Failed to initialize PeerConnection", true);
391 }
392 }
393
394 cricket::VideoCapturer* Conductor::OpenVideoCaptureDevice() {
395 rtc::scoped_ptr<cricket::DeviceManagerInterface> dev_manager(
396 cricket::DeviceManagerFactory::Create());
397 if (!dev_manager->Init()) {
398 LOG(LS_ERROR) << "Can't create device manager";
399 return NULL;
400 }
401 std::vector<cricket::Device> devs;
402 if (!dev_manager->GetVideoCaptureDevices(&devs)) {
403 LOG(LS_ERROR) << "Can't enumerate video devices";
404 return NULL;
405 }
406 std::vector<cricket::Device>::iterator dev_it = devs.begin();
407 cricket::VideoCapturer* capturer = NULL;
408 for (; dev_it != devs.end(); ++dev_it) {
409 capturer = dev_manager->CreateVideoCapturer(*dev_it);
410 if (capturer != NULL)
411 break;
412 }
413 return capturer;
414 }
415
416 void Conductor::AddStreams() {
417 if (active_streams_.find(kStreamLabel) != active_streams_.end())
418 return; // Already added.
419
420 rtc::scoped_refptr<webrtc::AudioTrackInterface> audio_track(
421 peer_connection_factory_->CreateAudioTrack(
422 kAudioLabel, peer_connection_factory_->CreateAudioSource(NULL)));
423
424 rtc::scoped_refptr<webrtc::VideoTrackInterface> video_track(
425 peer_connection_factory_->CreateVideoTrack(
426 kVideoLabel,
427 peer_connection_factory_->CreateVideoSource(OpenVideoCaptureDevice(),
428 NULL)));
429 main_wnd_->StartLocalRenderer(video_track);
430
431 rtc::scoped_refptr<webrtc::MediaStreamInterface> stream =
432 peer_connection_factory_->CreateLocalMediaStream(kStreamLabel);
433
434 stream->AddTrack(audio_track);
435 stream->AddTrack(video_track);
436 if (!peer_connection_->AddStream(stream)) {
437 LOG(LS_ERROR) << "Adding stream to PeerConnection failed";
438 }
439 typedef std::pair<std::string,
440 rtc::scoped_refptr<webrtc::MediaStreamInterface> >
441 MediaStreamPair;
442 active_streams_.insert(MediaStreamPair(stream->label(), stream));
443 main_wnd_->SwitchToStreamingUI();
444 }
445
446 void Conductor::DisconnectFromCurrentPeer() {
447 LOG(INFO) << __FUNCTION__;
448 if (peer_connection_.get()) {
449 client_->SendHangUp(peer_id_);
450 DeletePeerConnection();
451 }
452
453 if (main_wnd_->IsWindow())
454 main_wnd_->SwitchToPeerList(client_->peers());
455 }
456
457 void Conductor::UIThreadCallback(int msg_id, void* data) {
458 switch (msg_id) {
459 case PEER_CONNECTION_CLOSED:
460 LOG(INFO) << "PEER_CONNECTION_CLOSED";
461 DeletePeerConnection();
462
463 ASSERT(active_streams_.empty());
464
465 if (main_wnd_->IsWindow()) {
466 if (client_->is_connected()) {
467 main_wnd_->SwitchToPeerList(client_->peers());
468 } else {
469 main_wnd_->SwitchToConnectUI();
470 }
471 } else {
472 DisconnectFromServer();
473 }
474 break;
475
476 case SEND_MESSAGE_TO_PEER: {
477 LOG(INFO) << "SEND_MESSAGE_TO_PEER";
478 std::string* msg = reinterpret_cast<std::string*>(data);
479 if (msg) {
480 // For convenience, we always run the message through the queue.
481 // This way we can be sure that messages are sent to the server
482 // in the same order they were signaled without much hassle.
483 pending_messages_.push_back(msg);
484 }
485
486 if (!pending_messages_.empty() && !client_->IsSendingMessage()) {
487 msg = pending_messages_.front();
488 pending_messages_.pop_front();
489
490 if (!client_->SendToPeer(peer_id_, *msg) && peer_id_ != -1) {
491 LOG(LS_ERROR) << "SendToPeer failed";
492 DisconnectFromServer();
493 }
494 delete msg;
495 }
496
497 if (!peer_connection_.get())
498 peer_id_ = -1;
499
500 break;
501 }
502
503 case NEW_STREAM_ADDED: {
504 webrtc::MediaStreamInterface* stream =
505 reinterpret_cast<webrtc::MediaStreamInterface*>(
506 data);
507 webrtc::VideoTrackVector tracks = stream->GetVideoTracks();
508 // Only render the first track.
509 if (!tracks.empty()) {
510 webrtc::VideoTrackInterface* track = tracks[0];
511 main_wnd_->StartRemoteRenderer(track);
512 }
513 stream->Release();
514 break;
515 }
516
517 case STREAM_REMOVED: {
518 // Remote peer stopped sending a stream.
519 webrtc::MediaStreamInterface* stream =
520 reinterpret_cast<webrtc::MediaStreamInterface*>(
521 data);
522 stream->Release();
523 break;
524 }
525
526 default:
527 ASSERT(false);
528 break;
529 }
530 }
531
532 void Conductor::OnSuccess(webrtc::SessionDescriptionInterface* desc) {
533 peer_connection_->SetLocalDescription(
534 DummySetSessionDescriptionObserver::Create(), desc);
535
536 std::string sdp;
537 desc->ToString(&sdp);
538
539 // For loopback test. To save some connecting delay.
540 if (loopback_) {
541 // Replace message type from "offer" to "answer"
542 webrtc::SessionDescriptionInterface* session_description(
543 webrtc::CreateSessionDescription("answer", sdp, nullptr));
544 peer_connection_->SetRemoteDescription(
545 DummySetSessionDescriptionObserver::Create(), session_description);
546 return;
547 }
548
549 Json::StyledWriter writer;
550 Json::Value jmessage;
551 jmessage[kSessionDescriptionTypeName] = desc->type();
552 jmessage[kSessionDescriptionSdpName] = sdp;
553 SendMessage(writer.write(jmessage));
554 }
555
556 void Conductor::OnFailure(const std::string& error) {
557 LOG(LERROR) << error;
558 }
559
560 void Conductor::SendMessage(const std::string& json_object) {
561 std::string* msg = new std::string(json_object);
562 main_wnd_->QueueUIThreadCallback(SEND_MESSAGE_TO_PEER, msg);
563 }
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