| /* |
| * Copyright 2019 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. |
| */ |
| |
| #include <compositionengine/impl/HwcBufferCache.h> |
| #include <gtest/gtest.h> |
| #include <gui/BufferQueue.h> |
| #include <ui/GraphicBuffer.h> |
| |
| namespace android::compositionengine { |
| namespace { |
| |
| class TestableHwcBufferCache : public impl::HwcBufferCache { |
| public: |
| void getHwcBuffer(int slot, const sp<GraphicBuffer>& buffer, uint32_t* outSlot, |
| sp<GraphicBuffer>* outBuffer) { |
| HwcBufferCache::getHwcBuffer(slot, buffer, outSlot, outBuffer); |
| } |
| }; |
| |
| class HwcBufferCacheTest : public testing::Test { |
| public: |
| ~HwcBufferCacheTest() override = default; |
| |
| void testSlot(const int inSlot, const uint32_t expectedSlot) { |
| uint32_t outSlot; |
| sp<GraphicBuffer> outBuffer; |
| |
| // The first time, the output is the same as the input |
| mCache.getHwcBuffer(inSlot, mBuffer1, &outSlot, &outBuffer); |
| EXPECT_EQ(expectedSlot, outSlot); |
| EXPECT_EQ(mBuffer1, outBuffer); |
| |
| // The second time with the same buffer, the outBuffer is nullptr. |
| mCache.getHwcBuffer(inSlot, mBuffer1, &outSlot, &outBuffer); |
| EXPECT_EQ(expectedSlot, outSlot); |
| EXPECT_EQ(nullptr, outBuffer.get()); |
| |
| // With a new buffer, the outBuffer is the input. |
| mCache.getHwcBuffer(inSlot, mBuffer2, &outSlot, &outBuffer); |
| EXPECT_EQ(expectedSlot, outSlot); |
| EXPECT_EQ(mBuffer2, outBuffer); |
| |
| // Again, the second request with the same buffer sets outBuffer to nullptr. |
| mCache.getHwcBuffer(inSlot, mBuffer2, &outSlot, &outBuffer); |
| EXPECT_EQ(expectedSlot, outSlot); |
| EXPECT_EQ(nullptr, outBuffer.get()); |
| |
| // Setting a slot to use nullptr lookslike works, but note that |
| // the output values make it look like no new buffer is being set.... |
| mCache.getHwcBuffer(inSlot, sp<GraphicBuffer>(), &outSlot, &outBuffer); |
| EXPECT_EQ(expectedSlot, outSlot); |
| EXPECT_EQ(nullptr, outBuffer.get()); |
| } |
| |
| impl::HwcBufferCache mCache; |
| sp<GraphicBuffer> mBuffer1{new GraphicBuffer(1, 1, HAL_PIXEL_FORMAT_RGBA_8888, 1, 0)}; |
| sp<GraphicBuffer> mBuffer2{new GraphicBuffer(1, 1, HAL_PIXEL_FORMAT_RGBA_8888, 1, 0)}; |
| }; |
| |
| TEST_F(HwcBufferCacheTest, cacheWorksForSlotZero) { |
| testSlot(0, 0); |
| } |
| |
| TEST_F(HwcBufferCacheTest, cacheWorksForMaxSlot) { |
| testSlot(BufferQueue::NUM_BUFFER_SLOTS - 1, BufferQueue::NUM_BUFFER_SLOTS - 1); |
| } |
| |
| TEST_F(HwcBufferCacheTest, cacheMapsNegativeSlotToZero) { |
| testSlot(-123, 0); |
| } |
| |
| } // namespace |
| } // namespace android::compositionengine |