| /* | 
 |  * Copyright (C) 2012 The Android Open Source Project | 
 |  * | 
 |  * Licensed under the Apache License, Version 2.0 (the "License"); | 
 |  * you may not use this file except in compliance with the License. | 
 |  * You may obtain a copy of the License at | 
 |  * | 
 |  *      http://www.apache.org/licenses/LICENSE-2.0 | 
 |  * | 
 |  * Unless required by applicable law or agreed to in writing, software | 
 |  * distributed under the License is distributed on an "AS IS" BASIS, | 
 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
 |  * See the License for the specific language governing permissions and | 
 |  * limitations under the License. | 
 |  */ | 
 |  | 
 | #define LOG_TAG "BufferQueue_test" | 
 | //#define LOG_NDEBUG 0 | 
 |  | 
 | #include "DummyConsumer.h" | 
 |  | 
 | #include <gui/BufferItem.h> | 
 | #include <gui/BufferQueue.h> | 
 | #include <gui/IProducerListener.h> | 
 |  | 
 | #include <ui/GraphicBuffer.h> | 
 |  | 
 | #include <binder/IPCThreadState.h> | 
 | #include <binder/IServiceManager.h> | 
 | #include <binder/ProcessState.h> | 
 |  | 
 | #include <utils/String8.h> | 
 | #include <utils/threads.h> | 
 |  | 
 | #include <system/window.h> | 
 |  | 
 | #include <gtest/gtest.h> | 
 |  | 
 | #include <thread> | 
 |  | 
 | using namespace std::chrono_literals; | 
 |  | 
 | namespace android { | 
 |  | 
 | class BufferQueueTest : public ::testing::Test { | 
 |  | 
 | public: | 
 | protected: | 
 |     BufferQueueTest() { | 
 |         const ::testing::TestInfo* const testInfo = | 
 |             ::testing::UnitTest::GetInstance()->current_test_info(); | 
 |         ALOGV("Begin test: %s.%s", testInfo->test_case_name(), | 
 |                 testInfo->name()); | 
 |     } | 
 |  | 
 |     ~BufferQueueTest() { | 
 |         const ::testing::TestInfo* const testInfo = | 
 |             ::testing::UnitTest::GetInstance()->current_test_info(); | 
 |         ALOGV("End test:   %s.%s", testInfo->test_case_name(), | 
 |                 testInfo->name()); | 
 |     } | 
 |  | 
 |     void GetMinUndequeuedBufferCount(int* bufferCount) { | 
 |         ASSERT_TRUE(bufferCount != NULL); | 
 |         ASSERT_EQ(OK, mProducer->query(NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, | 
 |                     bufferCount)); | 
 |         ASSERT_GE(*bufferCount, 0); | 
 |     } | 
 |  | 
 |     void createBufferQueue() { | 
 |         BufferQueue::createBufferQueue(&mProducer, &mConsumer); | 
 |     } | 
 |  | 
 |     void testBufferItem(const IGraphicBufferProducer::QueueBufferInput& input, | 
 |             const BufferItem& item) { | 
 |         int64_t timestamp; | 
 |         bool isAutoTimestamp; | 
 |         android_dataspace dataSpace; | 
 |         Rect crop; | 
 |         int scalingMode; | 
 |         uint32_t transform; | 
 |         sp<Fence> fence; | 
 |  | 
 |         input.deflate(×tamp, &isAutoTimestamp, &dataSpace, &crop, | 
 |                 &scalingMode, &transform, &fence, NULL); | 
 |         ASSERT_EQ(timestamp, item.mTimestamp); | 
 |         ASSERT_EQ(isAutoTimestamp, item.mIsAutoTimestamp); | 
 |         ASSERT_EQ(dataSpace, item.mDataSpace); | 
 |         ASSERT_EQ(crop, item.mCrop); | 
 |         ASSERT_EQ(static_cast<uint32_t>(scalingMode), item.mScalingMode); | 
 |         ASSERT_EQ(transform, item.mTransform); | 
 |         ASSERT_EQ(fence, item.mFence); | 
 |     } | 
 |  | 
 |     sp<IGraphicBufferProducer> mProducer; | 
 |     sp<IGraphicBufferConsumer> mConsumer; | 
 | }; | 
 |  | 
 | static const uint32_t TEST_DATA = 0x12345678u; | 
 |  | 
 | // XXX: Tests that fork a process to hold the BufferQueue must run before tests | 
 | // that use a local BufferQueue, or else Binder will get unhappy | 
 | // | 
 | // In one instance this was a crash in the createBufferQueue where the | 
 | // binder call to create a buffer allocator apparently got garbage back. | 
 | // See b/36592665. | 
 | TEST_F(BufferQueueTest, DISABLED_BufferQueueInAnotherProcess) { | 
 |     const String16 PRODUCER_NAME = String16("BQTestProducer"); | 
 |     const String16 CONSUMER_NAME = String16("BQTestConsumer"); | 
 |  | 
 |     pid_t forkPid = fork(); | 
 |     ASSERT_NE(forkPid, -1); | 
 |  | 
 |     if (forkPid == 0) { | 
 |         // Child process | 
 |         sp<IGraphicBufferProducer> producer; | 
 |         sp<IGraphicBufferConsumer> consumer; | 
 |         BufferQueue::createBufferQueue(&producer, &consumer); | 
 |         sp<IServiceManager> serviceManager = defaultServiceManager(); | 
 |         serviceManager->addService(PRODUCER_NAME, IInterface::asBinder(producer)); | 
 |         serviceManager->addService(CONSUMER_NAME, IInterface::asBinder(consumer)); | 
 |         ProcessState::self()->startThreadPool(); | 
 |         IPCThreadState::self()->joinThreadPool(); | 
 |         LOG_ALWAYS_FATAL("Shouldn't be here"); | 
 |     } | 
 |  | 
 |     sp<IServiceManager> serviceManager = defaultServiceManager(); | 
 |     sp<IBinder> binderProducer = | 
 |         serviceManager->getService(PRODUCER_NAME); | 
 |     mProducer = interface_cast<IGraphicBufferProducer>(binderProducer); | 
 |     EXPECT_TRUE(mProducer != NULL); | 
 |     sp<IBinder> binderConsumer = | 
 |         serviceManager->getService(CONSUMER_NAME); | 
 |     mConsumer = interface_cast<IGraphicBufferConsumer>(binderConsumer); | 
 |     EXPECT_TRUE(mConsumer != NULL); | 
 |  | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, | 
 |             mProducer->connect(NULL, NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, | 
 |                     GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |  | 
 |     uint32_t* dataIn; | 
 |     ASSERT_EQ(OK, buffer->lock(GraphicBuffer::USAGE_SW_WRITE_OFTEN, | 
 |             reinterpret_cast<void**>(&dataIn))); | 
 |     *dataIn = TEST_DATA; | 
 |     ASSERT_EQ(OK, buffer->unlock()); | 
 |  | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |  | 
 |     uint32_t* dataOut; | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN, | 
 |             reinterpret_cast<void**>(&dataOut))); | 
 |     ASSERT_EQ(*dataOut, TEST_DATA); | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->unlock()); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, AcquireBuffer_ExceedsMaxAcquireCount_Fails) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     mConsumer->consumerConnect(dc, false); | 
 |     IGraphicBufferProducer::QueueBufferOutput qbo; | 
 |     mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false, | 
 |             &qbo); | 
 |     mProducer->setMaxDequeuedBufferCount(3); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buf; | 
 |     IGraphicBufferProducer::QueueBufferInput qbi(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     BufferItem item; | 
 |  | 
 |     for (int i = 0; i < 2; i++) { | 
 |         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |                 mProducer->dequeueBuffer(&slot, &fence, 1, 1, 0, | 
 |                     GRALLOC_USAGE_SW_READ_OFTEN, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buf)); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, qbi, &qbo)); | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     } | 
 |  | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 1, 1, 0, | 
 |                 GRALLOC_USAGE_SW_READ_OFTEN, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buf)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, qbi, &qbo)); | 
 |  | 
 |     // Acquire the third buffer, which should fail. | 
 |     ASSERT_EQ(INVALID_OPERATION, mConsumer->acquireBuffer(&item, 0)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, SetMaxAcquiredBufferCountWithIllegalValues_ReturnsError) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     mConsumer->consumerConnect(dc, false); | 
 |  | 
 |     EXPECT_EQ(OK, mConsumer->setMaxBufferCount(10)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount(10)); | 
 |  | 
 |     IGraphicBufferProducer::QueueBufferOutput qbo; | 
 |     mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false, | 
 |             &qbo); | 
 |     mProducer->setMaxDequeuedBufferCount(3); | 
 |  | 
 |     int minBufferCount; | 
 |     ASSERT_NO_FATAL_FAILURE(GetMinUndequeuedBufferCount(&minBufferCount)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount( | 
 |                 minBufferCount - 1)); | 
 |  | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount(0)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount(-3)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount( | 
 |             BufferQueue::MAX_MAX_ACQUIRED_BUFFERS+1)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount(100)); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buf; | 
 |     IGraphicBufferProducer::QueueBufferInput qbi(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     BufferItem item; | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(3)); | 
 |     for (int i = 0; i < 3; i++) { | 
 |         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |                 mProducer->dequeueBuffer(&slot, &fence, 1, 1, 0, | 
 |                     GRALLOC_USAGE_SW_READ_OFTEN, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buf)); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, qbi, &qbo)); | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     } | 
 |  | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount(2)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, SetMaxAcquiredBufferCountWithLegalValues_Succeeds) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     mConsumer->consumerConnect(dc, false); | 
 |  | 
 |     IGraphicBufferProducer::QueueBufferOutput qbo; | 
 |     mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false, | 
 |             &qbo); | 
 |     mProducer->setMaxDequeuedBufferCount(2); | 
 |  | 
 |     int minBufferCount; | 
 |     ASSERT_NO_FATAL_FAILURE(GetMinUndequeuedBufferCount(&minBufferCount)); | 
 |  | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(1)); | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(2)); | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(minBufferCount)); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buf; | 
 |     IGraphicBufferProducer::QueueBufferInput qbi(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     BufferItem item; | 
 |  | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 1, 1, 0, | 
 |             GRALLOC_USAGE_SW_READ_OFTEN, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buf)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, qbi, &qbo)); | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |  | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(3)); | 
 |  | 
 |     for (int i = 0; i < 2; i++) { | 
 |         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |                 mProducer->dequeueBuffer(&slot, &fence, 1, 1, 0, | 
 |                 GRALLOC_USAGE_SW_READ_OFTEN, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buf)); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, qbi, &qbo)); | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     } | 
 |  | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount( | 
 |             BufferQueue::MAX_MAX_ACQUIRED_BUFFERS)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, SetMaxBufferCountWithLegalValues_Succeeds) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     mConsumer->consumerConnect(dc, false); | 
 |  | 
 |     // Test shared buffer mode | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(1)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, SetMaxBufferCountWithIllegalValues_ReturnsError) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     mConsumer->consumerConnect(dc, false); | 
 |  | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxBufferCount(0)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxBufferCount( | 
 |             BufferQueue::NUM_BUFFER_SLOTS + 1)); | 
 |  | 
 |     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(5)); | 
 |     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxBufferCount(3)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, DetachAndReattachOnProducerSide) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer(-1)); // Index too low | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer( | 
 |                 BufferQueueDefs::NUM_BUFFER_SLOTS)); // Index too high | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer(0)); // Not dequeued | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, | 
 |                     GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer(slot)); // Not requested | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |     ASSERT_EQ(OK, mProducer->detachBuffer(slot)); | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer(slot)); // Not dequeued | 
 |  | 
 |     sp<GraphicBuffer> safeToClobberBuffer; | 
 |     // Can no longer request buffer from this slot | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->requestBuffer(slot, &safeToClobberBuffer)); | 
 |  | 
 |     uint32_t* dataIn; | 
 |     ASSERT_EQ(OK, buffer->lock(GraphicBuffer::USAGE_SW_WRITE_OFTEN, | 
 |             reinterpret_cast<void**>(&dataIn))); | 
 |     *dataIn = TEST_DATA; | 
 |     ASSERT_EQ(OK, buffer->unlock()); | 
 |  | 
 |     int newSlot; | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(NULL, safeToClobberBuffer)); | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(&newSlot, NULL)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->attachBuffer(&newSlot, buffer)); | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(newSlot, input, &output)); | 
 |  | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, static_cast<nsecs_t>(0))); | 
 |  | 
 |     uint32_t* dataOut; | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN, | 
 |             reinterpret_cast<void**>(&dataOut))); | 
 |     ASSERT_EQ(*dataOut, TEST_DATA); | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->unlock()); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, DetachAndReattachOnConsumerSide) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, | 
 |                     GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->detachBuffer(-1)); // Index too low | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->detachBuffer( | 
 |             BufferQueueDefs::NUM_BUFFER_SLOTS)); // Index too high | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->detachBuffer(0)); // Not acquired | 
 |  | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, static_cast<nsecs_t>(0))); | 
 |  | 
 |     ASSERT_EQ(OK, mConsumer->detachBuffer(item.mSlot)); | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->detachBuffer(item.mSlot)); // Not acquired | 
 |  | 
 |     uint32_t* dataIn; | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->lock( | 
 |             GraphicBuffer::USAGE_SW_WRITE_OFTEN, | 
 |             reinterpret_cast<void**>(&dataIn))); | 
 |     *dataIn = TEST_DATA; | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->unlock()); | 
 |  | 
 |     int newSlot; | 
 |     sp<GraphicBuffer> safeToClobberBuffer; | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(NULL, safeToClobberBuffer)); | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(&newSlot, NULL)); | 
 |     ASSERT_EQ(OK, mConsumer->attachBuffer(&newSlot, item.mGraphicBuffer)); | 
 |  | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(newSlot, 0, EGL_NO_DISPLAY, | 
 |             EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, | 
 |                     GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |  | 
 |     uint32_t* dataOut; | 
 |     ASSERT_EQ(OK, buffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN, | 
 |             reinterpret_cast<void**>(&dataOut))); | 
 |     ASSERT_EQ(*dataOut, TEST_DATA); | 
 |     ASSERT_EQ(OK, buffer->unlock()); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, MoveFromConsumerToProducer) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, | 
 |                     GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |  | 
 |     uint32_t* dataIn; | 
 |     ASSERT_EQ(OK, buffer->lock(GraphicBuffer::USAGE_SW_WRITE_OFTEN, | 
 |             reinterpret_cast<void**>(&dataIn))); | 
 |     *dataIn = TEST_DATA; | 
 |     ASSERT_EQ(OK, buffer->unlock()); | 
 |  | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, static_cast<nsecs_t>(0))); | 
 |     ASSERT_EQ(OK, mConsumer->detachBuffer(item.mSlot)); | 
 |  | 
 |     int newSlot; | 
 |     ASSERT_EQ(OK, mProducer->attachBuffer(&newSlot, item.mGraphicBuffer)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(newSlot, input, &output)); | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, static_cast<nsecs_t>(0))); | 
 |  | 
 |     uint32_t* dataOut; | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN, | 
 |             reinterpret_cast<void**>(&dataOut))); | 
 |     ASSERT_EQ(*dataOut, TEST_DATA); | 
 |     ASSERT_EQ(OK, item.mGraphicBuffer->unlock()); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestDisallowingAllocation) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     static const uint32_t WIDTH = 320; | 
 |     static const uint32_t HEIGHT = 240; | 
 |  | 
 |     ASSERT_EQ(OK, mConsumer->setDefaultBufferSize(WIDTH, HEIGHT)); | 
 |  | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     // This should return an error since it would require an allocation | 
 |     ASSERT_EQ(OK, mProducer->allowAllocation(false)); | 
 |     ASSERT_EQ(WOULD_BLOCK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, | 
 |             0, GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |  | 
 |     // This should succeed, now that we've lifted the prohibition | 
 |     ASSERT_EQ(OK, mProducer->allowAllocation(true)); | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, | 
 |             GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 |  | 
 |     // Release the previous buffer back to the BufferQueue | 
 |     mProducer->cancelBuffer(slot, fence); | 
 |  | 
 |     // This should fail since we're requesting a different size | 
 |     ASSERT_EQ(OK, mProducer->allowAllocation(false)); | 
 |     ASSERT_EQ(WOULD_BLOCK, mProducer->dequeueBuffer(&slot, &fence, | 
 |             WIDTH * 2, HEIGHT * 2, 0, GRALLOC_USAGE_SW_WRITE_OFTEN, nullptr)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestGenerationNumbers) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->setGenerationNumber(1)); | 
 |  | 
 |     // Get one buffer to play with | 
 |     int slot; | 
 |     sp<Fence> fence; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |  | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |  | 
 |     // Ensure that the generation number we set propagates to allocated buffers | 
 |     ASSERT_EQ(1U, buffer->getGenerationNumber()); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->detachBuffer(slot)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->setGenerationNumber(2)); | 
 |  | 
 |     // These should fail, since we've changed the generation number on the queue | 
 |     int outSlot; | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(&outSlot, buffer)); | 
 |     ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(&outSlot, buffer)); | 
 |  | 
 |     buffer->setGenerationNumber(2); | 
 |  | 
 |     // This should succeed now that we've changed the buffer's generation number | 
 |     ASSERT_EQ(OK, mProducer->attachBuffer(&outSlot, buffer)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->detachBuffer(outSlot)); | 
 |  | 
 |     // This should also succeed with the new generation number | 
 |     ASSERT_EQ(OK, mConsumer->attachBuffer(&outSlot, buffer)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestSharedBufferModeWithoutAutoRefresh) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->setSharedBufferMode(true)); | 
 |  | 
 |     // Get a buffer | 
 |     int sharedSlot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(sharedSlot, &buffer)); | 
 |  | 
 |     // Queue the buffer | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output)); | 
 |  | 
 |     // Repeatedly queue and dequeue a buffer from the producer side, it should | 
 |     // always return the same one. And we won't run out of buffers because it's | 
 |     // always the same one and because async mode gets enabled. | 
 |     int slot; | 
 |     for (int i = 0; i < 5; i++) { | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(sharedSlot, slot); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output)); | 
 |     } | 
 |  | 
 |     // acquire the buffer | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(sharedSlot, item.mSlot); | 
 |     testBufferItem(input, item); | 
 |     ASSERT_EQ(true, item.mQueuedBuffer); | 
 |     ASSERT_EQ(false, item.mAutoRefresh); | 
 |  | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     // attempt to acquire a second time should return no buffer available | 
 |     ASSERT_EQ(IGraphicBufferConsumer::NO_BUFFER_AVAILABLE, | 
 |             mConsumer->acquireBuffer(&item, 0)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestSharedBufferModeWithAutoRefresh) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->setSharedBufferMode(true)); | 
 |     ASSERT_EQ(OK, mProducer->setAutoRefresh(true)); | 
 |  | 
 |     // Get a buffer | 
 |     int sharedSlot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(sharedSlot, &buffer)); | 
 |  | 
 |     // Queue the buffer | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output)); | 
 |  | 
 |     // Repeatedly acquire and release a buffer from the consumer side, it should | 
 |     // always return the same one. | 
 |     BufferItem item; | 
 |     for (int i = 0; i < 5; i++) { | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |         ASSERT_EQ(sharedSlot, item.mSlot); | 
 |         testBufferItem(input, item); | 
 |         ASSERT_EQ(i == 0, item.mQueuedBuffer); | 
 |         ASSERT_EQ(true, item.mAutoRefresh); | 
 |  | 
 |         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |     } | 
 |  | 
 |     // Repeatedly queue and dequeue a buffer from the producer side, it should | 
 |     // always return the same one. | 
 |     int slot; | 
 |     for (int i = 0; i < 5; i++) { | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(sharedSlot, slot); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output)); | 
 |     } | 
 |  | 
 |     // Repeatedly acquire and release a buffer from the consumer side, it should | 
 |     // always return the same one. First grabbing them from the queue and then | 
 |     // when the queue is empty, returning the shared buffer. | 
 |     for (int i = 0; i < 10; i++) { | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |         ASSERT_EQ(sharedSlot, item.mSlot); | 
 |         ASSERT_EQ(0, item.mTimestamp); | 
 |         ASSERT_EQ(false, item.mIsAutoTimestamp); | 
 |         ASSERT_EQ(HAL_DATASPACE_UNKNOWN, item.mDataSpace); | 
 |         ASSERT_EQ(Rect(0, 0, 1, 1), item.mCrop); | 
 |         ASSERT_EQ(NATIVE_WINDOW_SCALING_MODE_FREEZE, item.mScalingMode); | 
 |         ASSERT_EQ(0u, item.mTransform); | 
 |         ASSERT_EQ(Fence::NO_FENCE, item.mFence); | 
 |         ASSERT_EQ(i == 0, item.mQueuedBuffer); | 
 |         ASSERT_EQ(true, item.mAutoRefresh); | 
 |  | 
 |         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |     } | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestSharedBufferModeUsingAlreadyDequeuedBuffer) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     // Dequeue a buffer | 
 |     int sharedSlot; | 
 |     sp<Fence> fence; | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(sharedSlot, &buffer)); | 
 |  | 
 |     // Enable shared buffer mode | 
 |     ASSERT_EQ(OK, mProducer->setSharedBufferMode(true)); | 
 |  | 
 |     // Queue the buffer | 
 |     IGraphicBufferProducer::QueueBufferInput input(0, false, | 
 |             HAL_DATASPACE_UNKNOWN, Rect(0, 0, 1, 1), | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output)); | 
 |  | 
 |     // Repeatedly queue and dequeue a buffer from the producer side, it should | 
 |     // always return the same one. And we won't run out of buffers because it's | 
 |     // always the same one and because async mode gets enabled. | 
 |     int slot; | 
 |     for (int i = 0; i < 5; i++) { | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(sharedSlot, slot); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output)); | 
 |     } | 
 |  | 
 |     // acquire the buffer | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(sharedSlot, item.mSlot); | 
 |     testBufferItem(input, item); | 
 |     ASSERT_EQ(true, item.mQueuedBuffer); | 
 |     ASSERT_EQ(false, item.mAutoRefresh); | 
 |  | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     // attempt to acquire a second time should return no buffer available | 
 |     ASSERT_EQ(IGraphicBufferConsumer::NO_BUFFER_AVAILABLE, | 
 |             mConsumer->acquireBuffer(&item, 0)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestTimeouts) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     // Fill up the queue. Since the controlledByApp flags are set to true, this | 
 |     // queue should be in non-blocking mode, and we should be recycling the same | 
 |     // two buffers | 
 |     for (int i = 0; i < 5; ++i) { | 
 |         int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |         sp<Fence> fence = Fence::NO_FENCE; | 
 |         auto result = mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr); | 
 |         if (i < 2) { | 
 |             ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |                     result); | 
 |         } else { | 
 |             ASSERT_EQ(OK, result); | 
 |         } | 
 |         sp<GraphicBuffer> buffer; | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |         IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |                 HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |                 NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |         IGraphicBufferProducer::QueueBufferOutput output{}; | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     } | 
 |  | 
 |     const auto TIMEOUT = ms2ns(250); | 
 |     mProducer->setDequeueTimeout(TIMEOUT); | 
 |  | 
 |     // Setting a timeout will change the BufferQueue into blocking mode (with | 
 |     // one droppable buffer in the queue and one free from the previous | 
 |     // dequeue/queues), so dequeue and queue two more buffers: one to replace | 
 |     // the current droppable buffer, and a second to max out the buffer count | 
 |     sp<GraphicBuffer> buffer; // Save a buffer to attach later | 
 |     for (int i = 0; i < 2; ++i) { | 
 |         int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |         sp<Fence> fence = Fence::NO_FENCE; | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |         IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |                 HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |                 NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     } | 
 |  | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> fence = Fence::NO_FENCE; | 
 |     auto startTime = systemTime(); | 
 |     ASSERT_EQ(TIMED_OUT, mProducer->dequeueBuffer( | 
 |             &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_GE(systemTime() - startTime, TIMEOUT); | 
 |  | 
 |     // We're technically attaching the same buffer multiple times (since we | 
 |     // queued it previously), but that doesn't matter for this test | 
 |     startTime = systemTime(); | 
 |     ASSERT_EQ(TIMED_OUT, mProducer->attachBuffer(&slot, buffer)); | 
 |     ASSERT_GE(systemTime() - startTime, TIMEOUT); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, CanAttachWhileDisallowingAllocation) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |  | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> sourceFence; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &sourceFence, 0, 0, 0, 0, nullptr)); | 
 |     sp<GraphicBuffer> buffer; | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |     ASSERT_EQ(OK, mProducer->detachBuffer(slot)); | 
 |  | 
 |     ASSERT_EQ(OK, mProducer->allowAllocation(false)); | 
 |  | 
 |     slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     ASSERT_EQ(OK, mProducer->attachBuffer(&slot, buffer)); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, CanRetrieveLastQueuedBuffer) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     // Dequeue and queue the first buffer, storing the handle | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> fence; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     sp<GraphicBuffer> firstBuffer; | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &firstBuffer)); | 
 |  | 
 |     IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |         HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |         NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     // Dequeue a second buffer | 
 |     slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, | 
 |             mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     sp<GraphicBuffer> secondBuffer; | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &secondBuffer)); | 
 |  | 
 |     // Ensure it's a new buffer | 
 |     ASSERT_NE(firstBuffer->getNativeBuffer()->handle, | 
 |             secondBuffer->getNativeBuffer()->handle); | 
 |  | 
 |     // Queue the second buffer | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     // Acquire and release both buffers | 
 |     for (size_t i = 0; i < 2; ++i) { | 
 |         BufferItem item; | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                     EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |     } | 
 |  | 
 |     // Make sure we got the second buffer back | 
 |     sp<GraphicBuffer> returnedBuffer; | 
 |     sp<Fence> returnedFence; | 
 |     float transform[16]; | 
 |     ASSERT_EQ(OK, | 
 |             mProducer->getLastQueuedBuffer(&returnedBuffer, &returnedFence, | 
 |             transform)); | 
 |     ASSERT_EQ(secondBuffer->getNativeBuffer()->handle, | 
 |             returnedBuffer->getNativeBuffer()->handle); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestOccupancyHistory) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> fence = Fence::NO_FENCE; | 
 |     sp<GraphicBuffer> buffer = nullptr; | 
 |     IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |         HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |         NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     BufferItem item{}; | 
 |  | 
 |     // Preallocate, dequeue, request, and cancel 3 buffers so we don't get | 
 |     // BUFFER_NEEDS_REALLOCATION below | 
 |     int slots[3] = {}; | 
 |     mProducer->setMaxDequeuedBufferCount(3); | 
 |     for (size_t i = 0; i < 3; ++i) { | 
 |         status_t result = mProducer->dequeueBuffer(&slots[i], &fence, | 
 |                 0, 0, 0, 0, nullptr); | 
 |         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slots[i], &buffer)); | 
 |     } | 
 |     for (size_t i = 0; i < 3; ++i) { | 
 |         ASSERT_EQ(OK, mProducer->cancelBuffer(slots[i], Fence::NO_FENCE)); | 
 |     } | 
 |  | 
 |     // Create 3 segments | 
 |  | 
 |     // The first segment is a two-buffer segment, so we only put one buffer into | 
 |     // the queue at a time | 
 |     for (size_t i = 0; i < 5; ++i) { | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |         std::this_thread::sleep_for(16ms); | 
 |     } | 
 |  | 
 |     // Sleep between segments | 
 |     std::this_thread::sleep_for(500ms); | 
 |  | 
 |     // The second segment is a double-buffer segment. It starts the same as the | 
 |     // two-buffer segment, but then at the end, we put two buffers in the queue | 
 |     // at the same time before draining it. | 
 |     for (size_t i = 0; i < 5; ++i) { | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |         std::this_thread::sleep_for(16ms); | 
 |     } | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |     std::this_thread::sleep_for(16ms); | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     // Sleep between segments | 
 |     std::this_thread::sleep_for(500ms); | 
 |  | 
 |     // The third segment is a triple-buffer segment, so the queue is switching | 
 |     // between one buffer and two buffers deep. | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     for (size_t i = 0; i < 5; ++i) { | 
 |         ASSERT_EQ(OK, mProducer->dequeueBuffer( | 
 |                 &slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                     EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |         std::this_thread::sleep_for(16ms); | 
 |     } | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     // Now we read the segments | 
 |     std::vector<OccupancyTracker::Segment> history; | 
 |     ASSERT_EQ(OK, mConsumer->getOccupancyHistory(false, &history)); | 
 |  | 
 |     // Since we didn't force a flush, we should only get the first two segments | 
 |     // (since the third segment hasn't been closed out by the appearance of a | 
 |     // new segment yet) | 
 |     ASSERT_EQ(2u, history.size()); | 
 |  | 
 |     // The first segment (which will be history[1], since the newest segment | 
 |     // should be at the front of the vector) should be a two-buffer segment, | 
 |     // which implies that the occupancy average should be between 0 and 1, and | 
 |     // usedThirdBuffer should be false | 
 |     const auto& firstSegment = history[1]; | 
 |     ASSERT_EQ(5u, firstSegment.numFrames); | 
 |     ASSERT_LT(0, firstSegment.occupancyAverage); | 
 |     ASSERT_GT(1, firstSegment.occupancyAverage); | 
 |     ASSERT_EQ(false, firstSegment.usedThirdBuffer); | 
 |  | 
 |     // The second segment should be a double-buffered segment, which implies that | 
 |     // the occupancy average should be between 0 and 1, but usedThirdBuffer | 
 |     // should be true | 
 |     const auto& secondSegment = history[0]; | 
 |     ASSERT_EQ(7u, secondSegment.numFrames); | 
 |     ASSERT_LT(0, secondSegment.occupancyAverage); | 
 |     ASSERT_GT(1, secondSegment.occupancyAverage); | 
 |     ASSERT_EQ(true, secondSegment.usedThirdBuffer); | 
 |  | 
 |     // If we read the segments again without flushing, we shouldn't get any new | 
 |     // segments | 
 |     ASSERT_EQ(OK, mConsumer->getOccupancyHistory(false, &history)); | 
 |     ASSERT_EQ(0u, history.size()); | 
 |  | 
 |     // Read the segments again, this time forcing a flush so we get the third | 
 |     // segment | 
 |     ASSERT_EQ(OK, mConsumer->getOccupancyHistory(true, &history)); | 
 |     ASSERT_EQ(1u, history.size()); | 
 |  | 
 |     // This segment should be a triple-buffered segment, which implies that the | 
 |     // occupancy average should be between 1 and 2, and usedThirdBuffer should | 
 |     // be true | 
 |     const auto& thirdSegment = history[0]; | 
 |     ASSERT_EQ(6u, thirdSegment.numFrames); | 
 |     ASSERT_LT(1, thirdSegment.occupancyAverage); | 
 |     ASSERT_GT(2, thirdSegment.occupancyAverage); | 
 |     ASSERT_EQ(true, thirdSegment.usedThirdBuffer); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestDiscardFreeBuffers) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, false, &output)); | 
 |  | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> fence = Fence::NO_FENCE; | 
 |     sp<GraphicBuffer> buffer = nullptr; | 
 |     IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |         HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |         NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     BufferItem item{}; | 
 |  | 
 |     // Preallocate, dequeue, request, and cancel 4 buffers so we don't get | 
 |     // BUFFER_NEEDS_REALLOCATION below | 
 |     int slots[4] = {}; | 
 |     mProducer->setMaxDequeuedBufferCount(4); | 
 |     for (size_t i = 0; i < 4; ++i) { | 
 |         status_t result = mProducer->dequeueBuffer(&slots[i], &fence, | 
 |                 0, 0, 0, 0, nullptr); | 
 |         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slots[i], &buffer)); | 
 |     } | 
 |     for (size_t i = 0; i < 4; ++i) { | 
 |         ASSERT_EQ(OK, mProducer->cancelBuffer(slots[i], Fence::NO_FENCE)); | 
 |     } | 
 |  | 
 |     // Get buffers in all states: dequeued, filled, acquired, free | 
 |  | 
 |     // Fill 3 buffers | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     // Dequeue 1 buffer | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |  | 
 |     // Acquire and free 1 buffer | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |                     EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |     // Acquire 1 buffer, leaving 1 filled buffer in queue | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |  | 
 |     // Now discard the free buffers | 
 |     ASSERT_EQ(OK, mConsumer->discardFreeBuffers()); | 
 |  | 
 |     // Check no free buffers in dump | 
 |     String8 dumpString; | 
 |     mConsumer->dumpState(String8{}, &dumpString); | 
 |  | 
 |     // Parse the dump to ensure that all buffer slots that are FREE also | 
 |     // have a null GraphicBuffer | 
 |     // Fragile - assumes the following format for the dump for a buffer entry: | 
 |     // ":%p\][^:]*state=FREE" where %p is the buffer pointer in hex. | 
 |     ssize_t idx = dumpString.find("state=FREE"); | 
 |     while (idx != -1) { | 
 |         ssize_t bufferPtrIdx = idx - 1; | 
 |         while (bufferPtrIdx > 0) { | 
 |             if (dumpString[bufferPtrIdx] == ':') { | 
 |                 bufferPtrIdx++; | 
 |                 break; | 
 |             } | 
 |             bufferPtrIdx--; | 
 |         } | 
 |         ASSERT_GT(bufferPtrIdx, 0) << "Can't parse queue dump to validate"; | 
 |         ssize_t nullPtrIdx = dumpString.find("0x0]", bufferPtrIdx); | 
 |         ASSERT_EQ(bufferPtrIdx, nullPtrIdx) << "Free buffer not discarded"; | 
 |         idx = dumpString.find("FREE", idx + 1); | 
 |     } | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestBufferReplacedInQueueBuffer) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener, | 
 |             NATIVE_WINDOW_API_CPU, true, &output)); | 
 |     ASSERT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(1)); | 
 |  | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> fence = Fence::NO_FENCE; | 
 |     sp<GraphicBuffer> buffer = nullptr; | 
 |     IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |         HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |         NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |     BufferItem item{}; | 
 |  | 
 |     // Preallocate, dequeue, request, and cancel 2 buffers so we don't get | 
 |     // BUFFER_NEEDS_REALLOCATION below | 
 |     int slots[2] = {}; | 
 |     ASSERT_EQ(OK, mProducer->setMaxDequeuedBufferCount(2)); | 
 |     for (size_t i = 0; i < 2; ++i) { | 
 |         status_t result = mProducer->dequeueBuffer(&slots[i], &fence, | 
 |                 0, 0, 0, 0, nullptr); | 
 |         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result); | 
 |         ASSERT_EQ(OK, mProducer->requestBuffer(slots[i], &buffer)); | 
 |     } | 
 |     for (size_t i = 0; i < 2; ++i) { | 
 |         ASSERT_EQ(OK, mProducer->cancelBuffer(slots[i], Fence::NO_FENCE)); | 
 |     } | 
 |  | 
 |     // Fill 2 buffers without consumer consuming them. Verify that all | 
 |     // queued buffer returns proper bufferReplaced flag | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     ASSERT_EQ(false, output.bufferReplaced); | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |     ASSERT_EQ(true, output.bufferReplaced); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestStaleBufferHandleSentAfterDisconnect) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     sp<IProducerListener> dummyListener(new DummyProducerListener); | 
 |     ASSERT_EQ(OK, mProducer->connect(dummyListener, NATIVE_WINDOW_API_CPU, | 
 |             true, &output)); | 
 |  | 
 |     int slot = BufferQueue::INVALID_BUFFER_SLOT; | 
 |     sp<Fence> fence = Fence::NO_FENCE; | 
 |     sp<GraphicBuffer> buffer = nullptr; | 
 |     IGraphicBufferProducer::QueueBufferInput input(0ull, true, | 
 |             HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT, | 
 |             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE); | 
 |  | 
 |     // Dequeue, request, and queue one buffer | 
 |     status_t result = mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, | 
 |             nullptr); | 
 |     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result); | 
 |     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     // Acquire and release the buffer. Upon acquiring, the buffer handle should | 
 |     // be non-null since this is the first time we've acquired this slot. | 
 |     BufferItem item; | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(slot, item.mSlot); | 
 |     ASSERT_NE(nullptr, item.mGraphicBuffer.get()); | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     // Dequeue and queue the buffer again | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     // Acquire and release the buffer again. Upon acquiring, the buffer handle | 
 |     // should be null since this is not the first time we've acquired this slot. | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(slot, item.mSlot); | 
 |     ASSERT_EQ(nullptr, item.mGraphicBuffer.get()); | 
 |     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber, | 
 |             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE)); | 
 |  | 
 |     // Dequeue and queue the buffer again | 
 |     ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr)); | 
 |     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output)); | 
 |  | 
 |     // Disconnect the producer end. This should clear all of the slots and mark | 
 |     // the buffer in the queue as stale. | 
 |     ASSERT_EQ(OK, mProducer->disconnect(NATIVE_WINDOW_API_CPU)); | 
 |  | 
 |     // Acquire the buffer again. Upon acquiring, the buffer handle should not be | 
 |     // null since the queued buffer should have been marked as stale, which | 
 |     // should trigger the BufferQueue to resend the buffer handle. | 
 |     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0)); | 
 |     ASSERT_EQ(slot, item.mSlot); | 
 |     ASSERT_NE(nullptr, item.mGraphicBuffer.get()); | 
 | } | 
 |  | 
 | TEST_F(BufferQueueTest, TestProducerConnectDisconnect) { | 
 |     createBufferQueue(); | 
 |     sp<DummyConsumer> dc(new DummyConsumer); | 
 |     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true)); | 
 |     IGraphicBufferProducer::QueueBufferOutput output; | 
 |     sp<IProducerListener> dummyListener(new DummyProducerListener); | 
 |     ASSERT_EQ(NO_INIT, mProducer->disconnect(NATIVE_WINDOW_API_CPU)); | 
 |     ASSERT_EQ(OK, mProducer->connect( | 
 |             dummyListener, NATIVE_WINDOW_API_CPU, true, &output)); | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->connect( | 
 |             dummyListener, NATIVE_WINDOW_API_MEDIA, true, &output)); | 
 |  | 
 |     ASSERT_EQ(BAD_VALUE, mProducer->disconnect(NATIVE_WINDOW_API_MEDIA)); | 
 |     ASSERT_EQ(OK, mProducer->disconnect(NATIVE_WINDOW_API_CPU)); | 
 |     ASSERT_EQ(NO_INIT, mProducer->disconnect(NATIVE_WINDOW_API_CPU)); | 
 | } | 
 |  | 
 | } // namespace android |