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1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #define LOG_NDEBUG 0
18 #define LOG_TAG "CameraBinderTests"
19 
20 #include <binder/IInterface.h>
21 #include <binder/IServiceManager.h>
22 #include <binder/Parcel.h>
23 #include <binder/ProcessState.h>
24 #include <utils/Errors.h>
25 #include <utils/Log.h>
26 #include <utils/List.h>
27 #include <utils/String8.h>
28 #include <utils/String16.h>
29 #include <utils/Condition.h>
30 #include <utils/Mutex.h>
31 #include <system/graphics.h>
32 #include <hardware/gralloc.h>
33 
34 #include <camera/CameraMetadata.h>
35 #include <android/hardware/ICameraService.h>
36 #include <android/hardware/ICameraServiceListener.h>
37 #include <android/hardware/BnCameraServiceListener.h>
38 #include <android/hardware/camera2/ICameraDeviceUser.h>
39 #include <android/hardware/camera2/ICameraDeviceCallbacks.h>
40 #include <android/hardware/camera2/BnCameraDeviceCallbacks.h>
41 #include <camera/camera2/CaptureRequest.h>
42 #include <camera/camera2/OutputConfiguration.h>
43 #include <camera/camera2/SubmitInfo.h>
44 
45 #include <gui/BufferItemConsumer.h>
46 #include <gui/IGraphicBufferProducer.h>
47 #include <gui/Surface.h>
48 
49 #include <gtest/gtest.h>
50 #include <unistd.h>
51 #include <stdint.h>
52 #include <utility>
53 #include <vector>
54 #include <map>
55 #include <algorithm>
56 
57 using namespace android;
58 
59 #define ASSERT_NOT_NULL(x) \
60     ASSERT_TRUE((x) != nullptr)
61 
62 #define SETUP_TIMEOUT 2000000000 // ns
63 #define IDLE_TIMEOUT 2000000000 // ns
64 
65 // Stub listener implementation
66 class TestCameraServiceListener : public hardware::BnCameraServiceListener {
67     std::map<String16, int32_t> mCameraTorchStatuses;
68     std::map<String16, int32_t> mCameraStatuses;
69     mutable Mutex mLock;
70     mutable Condition mCondition;
71     mutable Condition mTorchCondition;
72 public:
~TestCameraServiceListener()73     virtual ~TestCameraServiceListener() {};
74 
onStatusChanged(int32_t status,const String16 & cameraId)75     virtual binder::Status onStatusChanged(int32_t status, const String16& cameraId) {
76         Mutex::Autolock l(mLock);
77         mCameraStatuses[cameraId] = status;
78         mCondition.broadcast();
79         return binder::Status::ok();
80     };
81 
onTorchStatusChanged(int32_t status,const String16 & cameraId)82     virtual binder::Status onTorchStatusChanged(int32_t status, const String16& cameraId) {
83         Mutex::Autolock l(mLock);
84         mCameraTorchStatuses[cameraId] = status;
85         mTorchCondition.broadcast();
86         return binder::Status::ok();
87     };
88 
waitForNumCameras(size_t num) const89     bool waitForNumCameras(size_t num) const {
90         Mutex::Autolock l(mLock);
91 
92         if (mCameraStatuses.size() == num) {
93             return true;
94         }
95 
96         while (mCameraStatuses.size() < num) {
97             if (mCondition.waitRelative(mLock, SETUP_TIMEOUT) != OK) {
98                 return false;
99             }
100         }
101         return true;
102     };
103 
waitForTorchState(int32_t status,int32_t cameraId) const104     bool waitForTorchState(int32_t status, int32_t cameraId) const {
105         Mutex::Autolock l(mLock);
106 
107         const auto& iter = mCameraTorchStatuses.find(String16(String8::format("%d", cameraId)));
108         if (iter != mCameraTorchStatuses.end() && iter->second == status) {
109             return true;
110         }
111 
112         bool foundStatus = false;
113         while (!foundStatus) {
114             if (mTorchCondition.waitRelative(mLock, SETUP_TIMEOUT) != OK) {
115                 return false;
116             }
117             const auto& iter =
118                     mCameraTorchStatuses.find(String16(String8::format("%d", cameraId)));
119             foundStatus = (iter != mCameraTorchStatuses.end() && iter->second == status);
120         }
121         return true;
122     };
123 
getTorchStatus(int32_t cameraId) const124     int32_t getTorchStatus(int32_t cameraId) const {
125         Mutex::Autolock l(mLock);
126         const auto& iter = mCameraTorchStatuses.find(String16(String8::format("%d", cameraId)));
127         if (iter == mCameraTorchStatuses.end()) {
128             return hardware::ICameraServiceListener::TORCH_STATUS_UNKNOWN;
129         }
130         return iter->second;
131     };
132 
getStatus(const String16 & cameraId) const133     int32_t getStatus(const String16& cameraId) const {
134         Mutex::Autolock l(mLock);
135         const auto& iter = mCameraStatuses.find(cameraId);
136         if (iter == mCameraStatuses.end()) {
137             return hardware::ICameraServiceListener::STATUS_UNKNOWN;
138         }
139         return iter->second;
140     };
141 };
142 
143 // Callback implementation
144 class TestCameraDeviceCallbacks : public hardware::camera2::BnCameraDeviceCallbacks {
145 public:
146     enum Status {
147         IDLE,
148         ERROR,
149         PREPARED,
150         RUNNING,
151         SENT_RESULT,
152         UNINITIALIZED,
153         REPEATING_REQUEST_ERROR,
154         REQUEST_QUEUE_EMPTY,
155     };
156 
157 protected:
158     bool mError;
159     int32_t mLastStatus;
160     mutable std::vector<int32_t> mStatusesHit;
161     mutable Mutex mLock;
162     mutable Condition mStatusCondition;
163 public:
TestCameraDeviceCallbacks()164     TestCameraDeviceCallbacks() : mError(false), mLastStatus(UNINITIALIZED) {}
165 
~TestCameraDeviceCallbacks()166     virtual ~TestCameraDeviceCallbacks() {}
167 
onDeviceError(int errorCode,const CaptureResultExtras & resultExtras)168     virtual binder::Status onDeviceError(int errorCode,
169             const CaptureResultExtras& resultExtras) {
170         (void) resultExtras;
171         ALOGE("%s: onDeviceError occurred with: %d", __FUNCTION__, static_cast<int>(errorCode));
172         Mutex::Autolock l(mLock);
173         mError = true;
174         mLastStatus = ERROR;
175         mStatusesHit.push_back(mLastStatus);
176         mStatusCondition.broadcast();
177         return binder::Status::ok();
178     }
179 
onDeviceIdle()180     virtual binder::Status onDeviceIdle() {
181         Mutex::Autolock l(mLock);
182         mLastStatus = IDLE;
183         mStatusesHit.push_back(mLastStatus);
184         mStatusCondition.broadcast();
185         return binder::Status::ok();
186     }
187 
onCaptureStarted(const CaptureResultExtras & resultExtras,int64_t timestamp)188     virtual binder::Status onCaptureStarted(const CaptureResultExtras& resultExtras,
189             int64_t timestamp) {
190         (void) resultExtras;
191         (void) timestamp;
192         Mutex::Autolock l(mLock);
193         mLastStatus = RUNNING;
194         mStatusesHit.push_back(mLastStatus);
195         mStatusCondition.broadcast();
196         return binder::Status::ok();
197     }
198 
199 
onResultReceived(const CameraMetadata & metadata,const CaptureResultExtras & resultExtras)200     virtual binder::Status onResultReceived(const CameraMetadata& metadata,
201             const CaptureResultExtras& resultExtras) {
202         (void) metadata;
203         (void) resultExtras;
204         Mutex::Autolock l(mLock);
205         mLastStatus = SENT_RESULT;
206         mStatusesHit.push_back(mLastStatus);
207         mStatusCondition.broadcast();
208         return binder::Status::ok();
209     }
210 
onPrepared(int streamId)211     virtual binder::Status onPrepared(int streamId) {
212         (void) streamId;
213         Mutex::Autolock l(mLock);
214         mLastStatus = PREPARED;
215         mStatusesHit.push_back(mLastStatus);
216         mStatusCondition.broadcast();
217         return binder::Status::ok();
218     }
219 
onRepeatingRequestError(int64_t lastFrameNumber)220     virtual binder::Status onRepeatingRequestError(int64_t lastFrameNumber) {
221         (void) lastFrameNumber;
222         Mutex::Autolock l(mLock);
223         mLastStatus = REPEATING_REQUEST_ERROR;
224         mStatusesHit.push_back(mLastStatus);
225         mStatusCondition.broadcast();
226         return binder::Status::ok();
227     }
228 
onRequestQueueEmpty()229     virtual binder::Status onRequestQueueEmpty() {
230         Mutex::Autolock l(mLock);
231         mLastStatus = REQUEST_QUEUE_EMPTY;
232         mStatusesHit.push_back(mLastStatus);
233         mStatusCondition.broadcast();
234         return binder::Status::ok();
235     }
236 
237     // Test helper functions:
238 
hadError() const239     bool hadError() const {
240         Mutex::Autolock l(mLock);
241         return mError;
242     }
243 
waitForStatus(Status status) const244     bool waitForStatus(Status status) const {
245         Mutex::Autolock l(mLock);
246         if (mLastStatus == status) {
247             return true;
248         }
249 
250         while (std::find(mStatusesHit.begin(), mStatusesHit.end(), status)
251                 == mStatusesHit.end()) {
252 
253             if (mStatusCondition.waitRelative(mLock, IDLE_TIMEOUT) != OK) {
254                 mStatusesHit.clear();
255                 return false;
256             }
257         }
258         mStatusesHit.clear();
259 
260         return true;
261 
262     }
263 
clearStatus() const264     void clearStatus() const {
265         Mutex::Autolock l(mLock);
266         mStatusesHit.clear();
267     }
268 
waitForIdle() const269     bool waitForIdle() const {
270         return waitForStatus(IDLE);
271     }
272 
273 };
274 
275 namespace {
276     Mutex                     gLock;
277     class DeathNotifier : public IBinder::DeathRecipient
278     {
279     public:
DeathNotifier()280         DeathNotifier() {}
281 
binderDied(const wp<IBinder> &)282         virtual void binderDied(const wp<IBinder>& /*who*/) {
283             ALOGV("binderDied");
284             Mutex::Autolock _l(gLock);
285             ALOGW("Camera service died!");
286         }
287     };
288     sp<DeathNotifier>         gDeathNotifier;
289 }; // anonymous namespace
290 
291 // Exercise basic binder calls for the camera service
TEST(CameraServiceBinderTest,CheckBinderCameraService)292 TEST(CameraServiceBinderTest, CheckBinderCameraService) {
293     ProcessState::self()->startThreadPool();
294     sp<IServiceManager> sm = defaultServiceManager();
295     sp<IBinder> binder = sm->getService(String16("media.camera"));
296     ASSERT_NOT_NULL(binder);
297     if (gDeathNotifier == NULL) {
298         gDeathNotifier = new DeathNotifier();
299     }
300     binder->linkToDeath(gDeathNotifier);
301     sp<hardware::ICameraService> service =
302             interface_cast<hardware::ICameraService>(binder);
303 
304     binder::Status res;
305 
306     int32_t numCameras = 0;
307     res = service->getNumberOfCameras(hardware::ICameraService::CAMERA_TYPE_ALL, &numCameras);
308     EXPECT_TRUE(res.isOk()) << res;
309     EXPECT_LE(0, numCameras);
310 
311     // Check listener binder calls
312     sp<TestCameraServiceListener> listener(new TestCameraServiceListener());
313     std::vector<hardware::CameraStatus> statuses;
314     res = service->addListener(listener, &statuses);
315     EXPECT_TRUE(res.isOk()) << res;
316 
317     EXPECT_EQ(numCameras, static_cast<const int>(statuses.size()));
318 
319     for (int32_t i = 0; i < numCameras; i++) {
320         String16 cameraId = String16(String8::format("%d", i));
321         bool isSupported = false;
322         res = service->supportsCameraApi(cameraId,
323                 hardware::ICameraService::API_VERSION_2, &isSupported);
324         EXPECT_TRUE(res.isOk()) << res;
325 
326         // We only care about binder calls for the Camera2 API.  Camera1 is deprecated.
327         if (!isSupported) {
328             continue;
329         }
330 
331         // Check metadata binder call
332         CameraMetadata metadata;
333         res = service->getCameraCharacteristics(cameraId, &metadata);
334         EXPECT_TRUE(res.isOk()) << res;
335         EXPECT_FALSE(metadata.isEmpty());
336 
337         // Make sure we're available, or skip device tests otherwise
338         int32_t s = listener->getStatus(cameraId);
339         EXPECT_EQ(::android::hardware::ICameraServiceListener::STATUS_PRESENT, s);
340         if (s != ::android::hardware::ICameraServiceListener::STATUS_PRESENT) {
341             continue;
342         }
343 
344         // Check connect binder calls
345         sp<TestCameraDeviceCallbacks> callbacks(new TestCameraDeviceCallbacks());
346         sp<hardware::camera2::ICameraDeviceUser> device;
347         res = service->connectDevice(callbacks, cameraId, String16("meeeeeeeee!"),
348                 hardware::ICameraService::USE_CALLING_UID, /*out*/&device);
349         EXPECT_TRUE(res.isOk()) << res;
350         ASSERT_NE(nullptr, device.get());
351         device->disconnect();
352         EXPECT_FALSE(callbacks->hadError());
353 
354         int32_t torchStatus = listener->getTorchStatus(i);
355         if (torchStatus == hardware::ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF) {
356             // Check torch calls
357             res = service->setTorchMode(cameraId,
358                     /*enabled*/true, callbacks);
359             EXPECT_TRUE(res.isOk()) << res;
360             EXPECT_TRUE(listener->waitForTorchState(
361                     hardware::ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON, i));
362             res = service->setTorchMode(cameraId,
363                     /*enabled*/false, callbacks);
364             EXPECT_TRUE(res.isOk()) << res;
365             EXPECT_TRUE(listener->waitForTorchState(
366                     hardware::ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF, i));
367         }
368     }
369 
370     res = service->removeListener(listener);
371     EXPECT_TRUE(res.isOk()) << res;
372 }
373 
374 // Test fixture for client focused binder tests
375 class CameraClientBinderTest : public testing::Test {
376 protected:
377     sp<hardware::ICameraService> service;
378     int32_t numCameras;
379     std::vector<std::pair<sp<TestCameraDeviceCallbacks>, sp<hardware::camera2::ICameraDeviceUser>>>
380             openDeviceList;
381     sp<TestCameraServiceListener> serviceListener;
382 
383     std::pair<sp<TestCameraDeviceCallbacks>, sp<hardware::camera2::ICameraDeviceUser>>
openNewDevice(const String16 & deviceId)384             openNewDevice(const String16& deviceId) {
385         sp<TestCameraDeviceCallbacks> callbacks(new TestCameraDeviceCallbacks());
386         sp<hardware::camera2::ICameraDeviceUser> device;
387         {
388             SCOPED_TRACE("openNewDevice");
389             binder::Status res = service->connectDevice(callbacks, deviceId, String16("meeeeeeeee!"),
390                     hardware::ICameraService::USE_CALLING_UID, /*out*/&device);
391             EXPECT_TRUE(res.isOk()) << res;
392         }
393         auto p = std::make_pair(callbacks, device);
394         openDeviceList.push_back(p);
395         return p;
396     }
397 
closeDevice(std::pair<sp<TestCameraDeviceCallbacks>,sp<hardware::camera2::ICameraDeviceUser>> & p)398     void closeDevice(std::pair<sp<TestCameraDeviceCallbacks>,
399             sp<hardware::camera2::ICameraDeviceUser>>& p) {
400         if (p.second.get() != nullptr) {
401             binder::Status res = p.second->disconnect();
402             EXPECT_TRUE(res.isOk()) << res;
403             {
404                 SCOPED_TRACE("closeDevice");
405                 EXPECT_FALSE(p.first->hadError());
406             }
407         }
408         auto iter = std::find(openDeviceList.begin(), openDeviceList.end(), p);
409         if (iter != openDeviceList.end()) {
410             openDeviceList.erase(iter);
411         }
412     }
413 
SetUp()414     virtual void SetUp() {
415         ProcessState::self()->startThreadPool();
416         sp<IServiceManager> sm = defaultServiceManager();
417         sp<IBinder> binder = sm->getService(String16("media.camera"));
418         service = interface_cast<hardware::ICameraService>(binder);
419         serviceListener = new TestCameraServiceListener();
420         std::vector<hardware::CameraStatus> statuses;
421         service->addListener(serviceListener, &statuses);
422         service->getNumberOfCameras(hardware::ICameraService::CAMERA_TYPE_BACKWARD_COMPATIBLE,
423                 &numCameras);
424     }
425 
TearDown()426     virtual void TearDown() {
427         service = nullptr;
428         numCameras = 0;
429         for (auto& p : openDeviceList) {
430             closeDevice(p);
431         }
432     }
433 
434 };
435 
TEST_F(CameraClientBinderTest,CheckBinderCameraDeviceUser)436 TEST_F(CameraClientBinderTest, CheckBinderCameraDeviceUser) {
437     ASSERT_NOT_NULL(service);
438     EXPECT_TRUE(serviceListener->waitForNumCameras(numCameras));
439     for (int32_t i = 0; i < numCameras; i++) {
440         // Make sure we're available, or skip device tests otherwise
441         String16 cameraId(String8::format("%d",i));
442         int32_t s = serviceListener->getStatus(cameraId);
443         EXPECT_EQ(hardware::ICameraServiceListener::STATUS_PRESENT, s);
444         if (s != hardware::ICameraServiceListener::STATUS_PRESENT) {
445             continue;
446         }
447         binder::Status res;
448         auto p = openNewDevice(cameraId);
449         sp<TestCameraDeviceCallbacks> callbacks = p.first;
450         sp<hardware::camera2::ICameraDeviceUser> device = p.second;
451 
452         // Setup a buffer queue; I'm just using the vendor opaque format here as that is
453         // guaranteed to be present
454         sp<IGraphicBufferProducer> gbProducer;
455         sp<IGraphicBufferConsumer> gbConsumer;
456         BufferQueue::createBufferQueue(&gbProducer, &gbConsumer);
457         sp<BufferItemConsumer> opaqueConsumer = new BufferItemConsumer(gbConsumer,
458                 GRALLOC_USAGE_SW_READ_NEVER, /*maxImages*/2, /*controlledByApp*/true);
459         EXPECT_TRUE(opaqueConsumer.get() != nullptr);
460         opaqueConsumer->setName(String8("nom nom nom"));
461 
462         // Set to VGA dimens for default, as that is guaranteed to be present
463         EXPECT_EQ(OK, gbConsumer->setDefaultBufferSize(640, 480));
464         EXPECT_EQ(OK, gbConsumer->setDefaultBufferFormat(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED));
465 
466         sp<Surface> surface(new Surface(gbProducer, /*controlledByApp*/false));
467 
468         OutputConfiguration output(gbProducer, /*rotation*/0);
469 
470         // Can we configure?
471         res = device->beginConfigure();
472         EXPECT_TRUE(res.isOk()) << res;
473         status_t streamId;
474         res = device->createStream(output, &streamId);
475         EXPECT_TRUE(res.isOk()) << res;
476         EXPECT_LE(0, streamId);
477         res = device->endConfigure(/*isConstrainedHighSpeed*/ false);
478         EXPECT_TRUE(res.isOk()) << res;
479         EXPECT_FALSE(callbacks->hadError());
480 
481         // Can we make requests?
482         CameraMetadata requestTemplate;
483         res = device->createDefaultRequest(/*preview template*/1,
484                 /*out*/&requestTemplate);
485         EXPECT_TRUE(res.isOk()) << res;
486 
487         hardware::camera2::CaptureRequest request;
488         request.mMetadata = requestTemplate;
489         request.mSurfaceList.add(surface);
490         request.mIsReprocess = false;
491         int64_t lastFrameNumber = 0;
492         int64_t lastFrameNumberPrev = 0;
493         callbacks->clearStatus();
494 
495         hardware::camera2::utils::SubmitInfo info;
496         res = device->submitRequest(request, /*streaming*/true, /*out*/&info);
497         EXPECT_TRUE(res.isOk()) << res;
498         EXPECT_TRUE(callbacks->waitForStatus(TestCameraDeviceCallbacks::SENT_RESULT));
499         EXPECT_LE(0, info.mRequestId);
500 
501         // Can we stop requests?
502         res = device->cancelRequest(info.mRequestId, /*out*/&lastFrameNumber);
503         EXPECT_TRUE(res.isOk()) << res;
504         EXPECT_TRUE(callbacks->waitForIdle());
505         EXPECT_FALSE(callbacks->hadError());
506 
507         // Can we do it again?
508         lastFrameNumberPrev = info.mLastFrameNumber;
509         lastFrameNumber = 0;
510         requestTemplate.clear();
511         res = device->createDefaultRequest(hardware::camera2::ICameraDeviceUser::TEMPLATE_PREVIEW,
512                 /*out*/&requestTemplate);
513         EXPECT_TRUE(res.isOk()) << res;
514         hardware::camera2::CaptureRequest request2;
515         request2.mMetadata = requestTemplate;
516         request2.mSurfaceList.add(surface);
517         request2.mIsReprocess = false;
518         callbacks->clearStatus();
519         hardware::camera2::utils::SubmitInfo info2;
520         res = device->submitRequest(request2, /*streaming*/true,
521                 /*out*/&info2);
522         EXPECT_TRUE(res.isOk()) << res;
523         EXPECT_EQ(hardware::camera2::ICameraDeviceUser::NO_IN_FLIGHT_REPEATING_FRAMES,
524                 info2.mLastFrameNumber);
525         lastFrameNumber = 0;
526         EXPECT_TRUE(callbacks->waitForStatus(TestCameraDeviceCallbacks::SENT_RESULT));
527         EXPECT_LE(0, info2.mRequestId);
528         res = device->cancelRequest(info2.mRequestId, /*out*/&lastFrameNumber);
529         EXPECT_TRUE(res.isOk()) << res;
530         EXPECT_TRUE(callbacks->waitForIdle());
531         EXPECT_LE(lastFrameNumberPrev, lastFrameNumber);
532         sleep(/*second*/1); // allow some time for errors to show up, if any
533         EXPECT_FALSE(callbacks->hadError());
534 
535         // Can we do it with a request list?
536         lastFrameNumberPrev = lastFrameNumber;
537         lastFrameNumber = 0;
538         requestTemplate.clear();
539         CameraMetadata requestTemplate2;
540         res = device->createDefaultRequest(hardware::camera2::ICameraDeviceUser::TEMPLATE_PREVIEW,
541                 /*out*/&requestTemplate);
542         EXPECT_TRUE(res.isOk()) << res;
543         res = device->createDefaultRequest(hardware::camera2::ICameraDeviceUser::TEMPLATE_PREVIEW,
544                 /*out*/&requestTemplate2);
545         EXPECT_TRUE(res.isOk()) << res;
546         android::hardware::camera2::CaptureRequest request3;
547         android::hardware::camera2::CaptureRequest request4;
548         request3.mMetadata = requestTemplate;
549         request3.mSurfaceList.add(surface);
550         request3.mIsReprocess = false;
551         request4.mMetadata = requestTemplate2;
552         request4.mSurfaceList.add(surface);
553         request4.mIsReprocess = false;
554         std::vector<hardware::camera2::CaptureRequest> requestList;
555         requestList.push_back(request3);
556         requestList.push_back(request4);
557 
558         callbacks->clearStatus();
559         hardware::camera2::utils::SubmitInfo info3;
560         res = device->submitRequestList(requestList, /*streaming*/false,
561                 /*out*/&info3);
562         EXPECT_TRUE(res.isOk()) << res;
563         EXPECT_LE(0, info3.mRequestId);
564         EXPECT_TRUE(callbacks->waitForStatus(TestCameraDeviceCallbacks::SENT_RESULT));
565         EXPECT_TRUE(callbacks->waitForIdle());
566         EXPECT_LE(lastFrameNumberPrev, info3.mLastFrameNumber);
567         sleep(/*second*/1); // allow some time for errors to show up, if any
568         EXPECT_FALSE(callbacks->hadError());
569 
570         // Can we unconfigure?
571         res = device->beginConfigure();
572         EXPECT_TRUE(res.isOk()) << res;
573         res = device->deleteStream(streamId);
574         EXPECT_TRUE(res.isOk()) << res;
575         res = device->endConfigure(/*isConstrainedHighSpeed*/ false);
576         EXPECT_TRUE(res.isOk()) << res;
577 
578         sleep(/*second*/1); // allow some time for errors to show up, if any
579         EXPECT_FALSE(callbacks->hadError());
580 
581         closeDevice(p);
582     }
583 
584 };
585