1 /* ****************************************************************
3 * Copyright 2016 Intel Corporation All Rights Reserved.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 ******************************************************************/
20 /// This sample provides steps to define an interface for a resource
21 /// (properties and methods) and host this resource on the server.
26 #include "platform_features.h"
27 #include <condition_variable>
29 #include "OCPlatform.h"
31 #include "ocpayload.h"
36 #include <mmdeviceapi.h>
37 #include <endpointvolume.h>
39 #include <math.h> /* log */
41 #define SAFE_RELEASE(x) \
43 { (x)->Release(); (x) = NULL; }
47 namespace PH = std::placeholders;
50 void * ChangeMediaRepresentation (void *param);
51 void * handleSlowResponse (void *param, std::shared_ptr<OCResourceRequest> pRequest);
53 void setVolume(int vol);
56 // Specifies where to notify all observers or list of observers
57 // false: notifies all observers
58 // true: notifies list of observers
59 bool isListOfObservers = false;
61 // Specifies secure or non-secure
62 // false: non-secure resource
63 // true: secure resource
64 bool isSecure = false;
66 /// Specifies whether Entity handler is going to do slow response or not
67 bool isSlowResponse = false;
70 // Forward declaring the entityHandler
72 /// This class represents a single resource named 'MediaResource'. This resource has
73 /// two simple properties named 'state' and 'volume'
79 /// Access this property from a TB client
83 std::string m_mediaUri;
84 OCResourceHandle m_resourceHandle;
85 OCRepresentation m_mediaRep;
86 ObservationIds m_interestedObservers;
91 :m_name("Media Player"), m_state(false), m_volume(0), m_mediaUri("/a/media"),
92 m_resourceHandle(nullptr)
94 // Initialize representation
95 m_mediaRep.setUri(m_mediaUri);
97 m_mediaRep.setValue("state", m_state);
98 m_mediaRep.setValue("volume", m_volume);
99 m_mediaRep.setValue("name", m_name);
102 /* Note that this does not need to be a member function: for classes you do not have
103 access to, you can accomplish this with a free function: */
105 /// This function internally calls registerResource API.
106 void createResource()
108 OCStackResult result = OC_STACK_OK;
110 /* Resource Information */
111 std::string resourceURI = m_mediaUri;
112 std::string resourceTypeName = "core.media";
113 std::string resourceInterface = DEFAULT_INTERFACE;
115 /* Device Information */
116 result = SetDeviceInfo();
117 if (OC_STACK_OK != result)
119 cout << "Device information registration was unsuccessful\n";
124 char* platformId = "0A3E0D6F-DBF5-404E-8719-D6880042463A";
125 char* manufacturerName = "OCF";
126 char* manufacturerLink = "https://www.iotivity.org";
127 char* modelNumber = "895";
128 char* dateOfManufacture = "2016-01-15";
129 char* platformVersion = "1.0";
130 char* osVersion = "1.0";
131 char* hardwareVersion = "1.0";
132 char* firmwareVersion = "1.0";
133 char* supportLink = "https://www.iotivity.org";
134 OCPlatformInfo platformInfo = { platformId,
147 result = OCPlatform::registerPlatformInfo(platformInfo);
148 if (OC_STACK_OK != result)
150 cout << "Platform information registration was unsuccessful\n";
154 // OCResourceProperty is defined ocstack.h
155 uint8_t resourceProperty;
158 resourceProperty = OC_DISCOVERABLE | OC_OBSERVABLE | OC_SECURE;
162 resourceProperty = OC_DISCOVERABLE | OC_OBSERVABLE;
164 EntityHandler cb = std::bind(&MediaResource::entityHandler, this, PH::_1);
166 // This will internally create and register the resource.
167 result = OCPlatform::registerResource(m_resourceHandle, resourceURI, resourceTypeName,
168 resourceInterface, cb, resourceProperty);
169 if (OC_STACK_OK != result)
171 cout << "Resource creation was unsuccessful\n";
175 OCResourceHandle getHandle()
177 return m_resourceHandle;
180 // Puts representation.
181 // Gets values from the representation and
182 // updates the internal state
183 void put(OCRepresentation& rep)
187 if (rep.getValue("state", m_state))
189 cout << "\t\t\t\t" << "state: " << m_state << endl;
197 cout << "\t\t\t\t" << "state not found in the representation" << endl;
200 if (rep.getValue("volume", m_volume))
202 cout << "\t\t\t\t" << "volume: " << m_volume << endl;
203 if((0 <= m_volume) && (m_volume <= 100))
210 cout << "\t\t\t\t" << "volume not found in the representation" << endl;
215 cout << e.what() << endl;
220 // Post representation.
221 // Post can create new resource or simply act like put.
222 // Gets values from the representation and
223 // updates the internal state
224 OCRepresentation post(OCRepresentation& rep)
231 // gets the updated representation.
232 // Updates the representation with latest internal state before
234 OCRepresentation get()
236 m_mediaRep.setValue("state", m_state);
237 m_mediaRep.setValue("volume", m_volume);
242 void addType(const std::string& type) const
244 OCStackResult result = OCPlatform::bindTypeToResource(m_resourceHandle, type);
245 if (OC_STACK_OK != result)
247 cout << "Binding TypeName to Resource was unsuccessful\n";
251 void addInterface(const std::string& intf) const
253 OCStackResult result = OCPlatform::bindInterfaceToResource(m_resourceHandle, intf);
254 if (OC_STACK_OK != result)
256 cout << "Binding TypeName to Resource was unsuccessful\n";
261 // This is just a sample implementation of entity handler.
262 // Entity handler can be implemented in several ways by the manufacturer
263 OCEntityHandlerResult entityHandler(std::shared_ptr<OCResourceRequest> request)
265 cout << "\tIn Server CPP entity handler:\n";
266 OCEntityHandlerResult ehResult = OC_EH_ERROR;
269 // Get the request type and request flag
270 std::string requestType = request->getRequestType();
271 int requestFlag = request->getRequestHandlerFlag();
273 if(requestFlag & RequestHandlerFlag::RequestFlag)
275 cout << "\t\trequestFlag : Request\n";
276 auto pResponse = std::make_shared<OC::OCResourceResponse>();
277 pResponse->setRequestHandle(request->getRequestHandle());
278 pResponse->setResourceHandle(request->getResourceHandle());
280 // Check for query params (if any)
281 QueryParamsMap queries = request->getQueryParameters();
283 if (!queries.empty())
285 cout << "\nQuery processing upto entityHandler" << std::endl;
287 for (auto it : queries)
289 cout << "Query key: " << it.first << " value : " << it.second
293 // If the request type is GET
294 if(requestType == "GET")
296 cout << "\t\t\trequestType : GET\n";
297 if(isSlowResponse) // Slow response case
299 static int startedThread = 0;
302 std::thread t(handleSlowResponse, (void *)this, request);
306 ehResult = OC_EH_SLOW;
308 else // normal response case.
311 pResponse->setResponseResult(OC_EH_OK);
312 pResponse->setResourceRepresentation(get());
313 if(OC_STACK_OK == OCPlatform::sendResponse(pResponse))
319 else if(requestType == "PUT")
321 cout << "\t\t\trequestType : PUT\n";
322 OCRepresentation rep = request->getResourceRepresentation();
324 // Do related operations related to PUT request
325 // Update the mediaResource
328 pResponse->setResponseResult(OC_EH_OK);
329 pResponse->setResourceRepresentation(get());
330 if(OC_STACK_OK == OCPlatform::sendResponse(pResponse))
335 else if(requestType == "POST")
337 cout << "\t\t\trequestType : POST\n";
339 OCRepresentation rep = request->getResourceRepresentation();
341 // Do related operations related to POST request
342 OCRepresentation rep_post = post(rep);
343 pResponse->setResourceRepresentation(rep_post);
345 if(rep_post.hasAttribute("createduri"))
347 pResponse->setResponseResult(OC_EH_RESOURCE_CREATED);
348 pResponse->setNewResourceUri(rep_post.getValue<std::string>("createduri"));
352 pResponse->setResponseResult(OC_EH_OK);
355 if(OC_STACK_OK == OCPlatform::sendResponse(pResponse))
360 else if(requestType == "DELETE")
362 cout << "Delete request received" << endl;
366 if(requestFlag & RequestHandlerFlag::ObserverFlag)
368 ObservationInfo observationInfo = request->getObservationInfo();
369 if(ObserveAction::ObserveRegister == observationInfo.action)
371 m_interestedObservers.push_back(observationInfo.obsId);
373 else if(ObserveAction::ObserveUnregister == observationInfo.action)
375 m_interestedObservers.erase(std::remove(
376 m_interestedObservers.begin(),
377 m_interestedObservers.end(),
378 observationInfo.obsId),
379 m_interestedObservers.end());
382 cout << "\t\trequestFlag : Observer\n";
384 static int startedThread = 0;
386 // Observation happens on a different thread in ChangeMediaRepresentation function.
387 // If we have not created the thread already, we will create one here.
391 std::thread t(ChangeMediaRepresentation, (void *)this);
401 cout << "Request invalid" << std::endl;
407 OCStackResult SetDeviceInfo()
409 OCStackResult result = OCPlatform::setPropertyValue(PAYLOAD_TYPE_DEVICE, OC_RSRVD_DEVICE_NAME,
410 "IoTivity Media Server");
411 if (result != OC_STACK_OK)
413 cout << "Failed to set device name" << endl;
417 result = OCPlatform::setPropertyValue(PAYLOAD_TYPE_DEVICE, OC_RSRVD_SPEC_VERSION, "core.1.1.0");
418 if (result != OC_STACK_OK)
420 cout << "Failed to set spec version" << endl;
429 // ChangeMediaRepresentaion is an observation function,
430 // which notifies any changes to the resource to stack
431 // via notifyObservers
432 void * ChangeMediaRepresentation (void *param)
435 MediaResource* mediaPtr = (MediaResource*) param;
437 // This function continuously monitors for the changes
444 prevVolume = mediaPtr->m_volume;
445 mediaPtr->m_volume = getVolume();
446 if (prevVolume == mediaPtr->m_volume)
449 cout << "Volume changed from " << prevVolume << "% to " << mediaPtr->m_volume << "%\n";
451 // If under observation if there are any changes to the media resource
452 // we call notifyObservors
454 // For demostration we are changing the volume value and notifying.
456 cout << "\nVolume updated to : " << mediaPtr->m_volume << endl;
457 cout << "Notifying observers with resource handle: " << mediaPtr->getHandle() << endl;
459 OCStackResult result = OC_STACK_OK;
461 if(isListOfObservers)
463 std::shared_ptr<OCResourceResponse> resourceResponse =
464 {std::make_shared<OCResourceResponse>()};
466 resourceResponse->setResourceRepresentation(mediaPtr->get(), DEFAULT_INTERFACE);
468 result = OCPlatform::notifyListOfObservers( mediaPtr->getHandle(),
469 mediaPtr->m_interestedObservers,
474 result = OCPlatform::notifyAllObservers(mediaPtr->getHandle());
477 if(OC_STACK_NO_OBSERVERS == result)
479 cout << "No More observers, stopping notifications" << endl;
488 void * handleSlowResponse (void *param, std::shared_ptr<OCResourceRequest> pRequest)
490 // This function handles slow response case
491 MediaResource* mediaPtr = (MediaResource*) param;
492 // Induce a case for slow response by using sleep
493 cout << "SLOW response" << std::endl;
496 auto pResponse = std::make_shared<OC::OCResourceResponse>();
497 pResponse->setRequestHandle(pRequest->getRequestHandle());
498 pResponse->setResourceHandle(pRequest->getResourceHandle());
499 pResponse->setResourceRepresentation(mediaPtr->get());
501 pResponse->setResponseResult(OC_EH_OK);
503 // Set the slow response flag back to false
504 isSlowResponse = false;
505 OCPlatform::sendResponse(pResponse);
512 cout << "Usage : mediaserver <value>\n";
513 cout << " Default - Non-secure resource and notify all observers\n";
514 cout << " 1 - Non-secure resource and notify list of observers\n\n";
515 cout << " 2 - Secure resource and notify all observers\n";
516 cout << " 3 - Secure resource and notify list of observers\n\n";
517 cout << " 4 - Non-secure resource, GET slow response, notify all observers\n";
520 static FILE* client_open(const char* /*path*/, const char* mode)
522 return fopen("./oic_svr_db_server.dat", mode);
529 // Set up a generic keyboard event.
530 ip.type = INPUT_KEYBOARD;
531 ip.ki.wScan = 0; // hardware scan code for key
533 ip.ki.dwExtraInfo = 0;
534 ip.ki.wVk = VK_MEDIA_PLAY_PAUSE; // virtual-key code for the "a" key
535 ip.ki.dwFlags = 0; // 0 for key press
537 SendInput(1, &ip, sizeof(INPUT));
538 // Release the "Play/Pause" key
539 ip.ki.dwFlags = KEYEVENTF_KEYUP; // KEYEVENTF_KEYUP for key release
540 SendInput(1, &ip, sizeof(INPUT));
545 IAudioEndpointVolume *g_pEndptVol = NULL;
547 IMMDeviceEnumerator *pEnumerator = NULL;
548 IMMDevice *pDevice = NULL;
549 OSVERSIONINFO VersionInfo;
551 ZeroMemory(&VersionInfo, sizeof(OSVERSIONINFO));
552 VersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
553 GetVersionEx(&VersionInfo);
556 // Get enumerator for audio endpoint devices.
557 hr = CoCreateInstance(__uuidof(MMDeviceEnumerator),
558 NULL, CLSCTX_INPROC_SERVER,
559 __uuidof(IMMDeviceEnumerator),
560 (void**)&pEnumerator);
562 // Get default audio-rendering device.
563 hr = pEnumerator->GetDefaultAudioEndpoint(eRender, eConsole, &pDevice);
565 hr = pDevice->Activate(__uuidof(IAudioEndpointVolume),
566 CLSCTX_ALL, NULL, (void**)&g_pEndptVol);
568 hr = g_pEndptVol->GetMasterVolumeLevelScalar(¤tVal);
569 fflush(stdout); // just in case
571 SAFE_RELEASE(pEnumerator)
572 SAFE_RELEASE(pDevice)
573 SAFE_RELEASE(g_pEndptVol)
575 return ((int) round(100 * currentVal));
579 void setVolume(int vol)
581 IAudioEndpointVolume *g_pEndptVol = NULL;
583 IMMDeviceEnumerator *pEnumerator = NULL;
584 IMMDevice *pDevice = NULL;
585 OSVERSIONINFO VersionInfo;
587 ZeroMemory(&VersionInfo, sizeof(OSVERSIONINFO));
588 VersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
589 GetVersionEx(&VersionInfo);
592 // Get enumerator for audio endpoint devices.
593 hr = CoCreateInstance(__uuidof(MMDeviceEnumerator),
594 NULL, CLSCTX_INPROC_SERVER,
595 __uuidof(IMMDeviceEnumerator),
596 (void**)&pEnumerator);
598 // Get default audio-rendering device.
599 hr = pEnumerator->GetDefaultAudioEndpoint(eRender, eConsole, &pDevice);
601 hr = pDevice->Activate(__uuidof(IAudioEndpointVolume),
602 CLSCTX_ALL, NULL, (void**)&g_pEndptVol);
603 float got = (float)vol/100.0; // needs to be within 1.0 to 0.0
604 hr = g_pEndptVol->SetMasterVolumeLevelScalar(got, NULL);
605 fflush(stdout); // just in case
607 SAFE_RELEASE(pEnumerator)
608 SAFE_RELEASE(pDevice)
609 SAFE_RELEASE(g_pEndptVol)
613 int main(int argc, char* argv[])
615 OCPersistentStorage ps {client_open, fread, fwrite, fclose, unlink };
619 isListOfObservers = false;
624 int value = atoi(argv[1]);
628 isListOfObservers = true;
632 isListOfObservers = false;
636 isListOfObservers = true;
640 isSlowResponse = true;
653 // Create PlatformConfig object
655 OC::ServiceType::InProc,
656 OC::ModeType::Server,
657 "0.0.0.0", // By setting to "0.0.0.0", it binds to all available interfaces
658 0, // Uses randomly available port
659 OC::QualityOfService::LowQos,
663 OCPlatform::Configure(cfg);
666 // Create the instance of the resource class
667 // (in this case instance of class 'MediaResource').
668 MediaResource myMedia;
670 // Invoke createResource function of class media.
671 myMedia.createResource();
672 cout << "Created resource." << std::endl;
674 // A condition variable will free the mutex it is given, then do a non-
675 // intensive block until 'notify' is called on it. In this case, since we
676 // don't ever call cv.notify, this should be a non-processor intensive version
679 std::condition_variable cv;
680 std::unique_lock<std::mutex> lock(blocker);
681 cout <<"Waiting" << std::endl;
682 cv.wait(lock, []{return false;});
684 catch(OCException &e)
686 cout << "OCException in main : " << e.what() << endl;
689 // No explicit call to stop the platform.
690 // When OCPlatform::destructor is invoked, internally we do platform cleanup