--- /dev/null
+/*
+ * Copyright (C) 2017 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 "BufferItemConsumer_test"
+//#define LOG_NDEBUG 0
+
+#include <gtest/gtest.h>
+#include <gui/BufferItemConsumer.h>
+#include <gui/IProducerListener.h>
+#include <gui/Surface.h>
+
+namespace android {
+
+static constexpr int kWidth = 100;
+static constexpr int kHeight = 100;
+static constexpr int kMaxLockedBuffers = 3;
+static constexpr int kFormat = HAL_PIXEL_FORMAT_RGBA_8888;
+static constexpr int kFrameSleepUs = 30 * 1000;
+
+class BufferItemConsumerTest : public ::testing::Test {
+ protected:
+ struct BufferFreedListener
+ : public BufferItemConsumer::BufferFreedListener {
+ explicit BufferFreedListener(BufferItemConsumerTest* test)
+ : mTest(test) {}
+ void onBufferFreed(const wp<GraphicBuffer>& /* gBuffer */) override {
+ mTest->HandleBufferFreed();
+ }
+ BufferItemConsumerTest* mTest;
+ };
+
+ void SetUp() override {
+ BufferQueue::createBufferQueue(&mProducer, &mConsumer);
+ mBIC =
+ new BufferItemConsumer(mConsumer, kFormat, kMaxLockedBuffers, true);
+ String8 name("BufferItemConsumer_Under_Test");
+ mBIC->setName(name);
+ mBFL = new BufferFreedListener(this);
+ mBIC->setBufferFreedListener(mBFL);
+
+ sp<IProducerListener> producerListener = new DummyProducerListener();
+ IGraphicBufferProducer::QueueBufferOutput bufferOutput;
+ ASSERT_EQ(NO_ERROR,
+ mProducer->connect(producerListener, NATIVE_WINDOW_API_CPU,
+ true, &bufferOutput));
+ ASSERT_EQ(NO_ERROR,
+ mProducer->setMaxDequeuedBufferCount(kMaxLockedBuffers));
+ }
+
+ int GetFreedBufferCount() {
+ std::lock_guard<std::mutex> lock(mMutex);
+ return mFreedBufferCount;
+ }
+
+ void HandleBufferFreed() {
+ std::lock_guard<std::mutex> lock(mMutex);
+ mFreedBufferCount++;
+ ALOGV("HandleBufferFreed, mFreedBufferCount=%d", mFreedBufferCount);
+ }
+
+ void DequeueBuffer(int* outSlot) {
+ ASSERT_NE(outSlot, nullptr);
+
+ int slot;
+ sp<Fence> outFence;
+ status_t ret = mProducer->dequeueBuffer(&slot, &outFence, kWidth,
+ kHeight, 0, 0, nullptr);
+ ASSERT_GE(ret, 0);
+
+ ALOGV("dequeueBuffer: slot=%d", slot);
+ if (ret & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) {
+ ret = mProducer->requestBuffer(slot, &mBuffers[slot]);
+ ASSERT_EQ(NO_ERROR, ret);
+ }
+ *outSlot = slot;
+ }
+
+ void QueueBuffer(int slot) {
+ ALOGV("enqueueBuffer: slot=%d", slot);
+ IGraphicBufferProducer::QueueBufferInput bufferInput(
+ 0ULL, true, HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT,
+ NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE);
+ IGraphicBufferProducer::QueueBufferOutput bufferOutput;
+ status_t ret = mProducer->queueBuffer(slot, bufferInput, &bufferOutput);
+ ASSERT_EQ(NO_ERROR, ret);
+ }
+
+ void AcquireBuffer(int* outSlot) {
+ ASSERT_NE(outSlot, nullptr);
+ BufferItem buffer;
+ status_t ret = mBIC->acquireBuffer(&buffer, 0, false);
+ ASSERT_EQ(NO_ERROR, ret);
+
+ ALOGV("acquireBuffer: slot=%d", buffer.mSlot);
+ *outSlot = buffer.mSlot;
+ }
+
+ void ReleaseBuffer(int slot) {
+ ALOGV("releaseBuffer: slot=%d", slot);
+ BufferItem buffer;
+ buffer.mSlot = slot;
+ buffer.mGraphicBuffer = mBuffers[slot];
+ status_t ret = mBIC->releaseBuffer(buffer, Fence::NO_FENCE);
+ ASSERT_EQ(NO_ERROR, ret);
+ }
+
+
+ std::mutex mMutex;
+ int mFreedBufferCount{0};
+
+ sp<BufferItemConsumer> mBIC;
+ sp<BufferFreedListener> mBFL;
+ sp<IGraphicBufferProducer> mProducer;
+ sp<IGraphicBufferConsumer> mConsumer;
+ sp<GraphicBuffer> mBuffers[BufferQueueDefs::NUM_BUFFER_SLOTS];
+};
+
+// Test that detaching buffer from consumer side triggers onBufferFreed.
+TEST_F(BufferItemConsumerTest, TriggerBufferFreed_DetachBufferFromConsumer) {
+ int slot;
+ // Producer: generate a dummy buffer.
+ DequeueBuffer(&slot);
+ QueueBuffer(slot);
+
+ ASSERT_EQ(0, GetFreedBufferCount());
+ // Consumer: acquire the buffer and then detach it.
+ AcquireBuffer(&slot);
+ status_t ret = mBIC->detachBuffer(slot);
+ ASSERT_EQ(NO_ERROR, ret);
+
+ // Sleep to give some time for callbacks to happen.
+ usleep(kFrameSleepUs);
+ ASSERT_EQ(1, GetFreedBufferCount());
+}
+
+// Test that detaching buffer from producer side triggers onBufferFreed.
+TEST_F(BufferItemConsumerTest, TriggerBufferFreed_DetachBufferFromProducer) {
+ int slot;
+ // Let buffer go through the cycle at least once.
+ DequeueBuffer(&slot);
+ QueueBuffer(slot);
+ AcquireBuffer(&slot);
+ ReleaseBuffer(slot);
+
+ ASSERT_EQ(0, GetFreedBufferCount());
+
+ // Producer: generate the buffer again.
+ DequeueBuffer(&slot);
+
+ // Producer: detach the buffer.
+ status_t ret = mProducer->detachBuffer(slot);
+ ASSERT_EQ(NO_ERROR, ret);
+
+ // Sleep to give some time for callbacks to happen.
+ usleep(kFrameSleepUs);
+ ASSERT_EQ(1, GetFreedBufferCount());
+}
+
+// Test that abandoning BufferItemConsumer triggers onBufferFreed.
+TEST_F(BufferItemConsumerTest, TriggerBufferFreed_AbandonBufferItemConsumer) {
+ int slot;
+ // Let buffer go through the cycle at least once.
+ DequeueBuffer(&slot);
+ QueueBuffer(slot);
+ AcquireBuffer(&slot);
+ ReleaseBuffer(slot);
+
+ // Abandon the BufferItemConsumer.
+ mBIC->abandon();
+
+ // Sleep to give some time for callbacks to happen.
+ usleep(kFrameSleepUs);
+ ASSERT_EQ(1, GetFreedBufferCount());
+}
+
+// Test that delete BufferItemConsumer triggers onBufferFreed.
+TEST_F(BufferItemConsumerTest, TriggerBufferFreed_DeleteBufferItemConsumer) {
+ int slot;
+ // Let buffer go through the cycle at least once.
+ DequeueBuffer(&slot);
+ QueueBuffer(slot);
+ AcquireBuffer(&slot);
+ ReleaseBuffer(slot);
+
+ // Delete the BufferItemConsumer.
+ mBIC.clear();
+
+ // Sleep to give some time for callbacks to happen.
+ usleep(kFrameSleepUs);
+ ASSERT_EQ(1, GetFreedBufferCount());
+}
+
+} // namespace android
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