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87 lines
3.1 KiB
87 lines
3.1 KiB
4 months ago
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/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <compositionengine/impl/HwcBufferCache.h>
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#include <gtest/gtest.h>
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#include <gui/BufferQueue.h>
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#include <ui/GraphicBuffer.h>
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namespace android::compositionengine {
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namespace {
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class TestableHwcBufferCache : public impl::HwcBufferCache {
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public:
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void getHwcBuffer(int slot, const sp<GraphicBuffer>& buffer, uint32_t* outSlot,
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sp<GraphicBuffer>* outBuffer) {
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HwcBufferCache::getHwcBuffer(slot, buffer, outSlot, outBuffer);
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}
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};
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class HwcBufferCacheTest : public testing::Test {
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public:
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~HwcBufferCacheTest() override = default;
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void testSlot(const int inSlot, const uint32_t expectedSlot) {
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uint32_t outSlot;
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sp<GraphicBuffer> outBuffer;
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// The first time, the output is the same as the input
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mCache.getHwcBuffer(inSlot, mBuffer1, &outSlot, &outBuffer);
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EXPECT_EQ(expectedSlot, outSlot);
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EXPECT_EQ(mBuffer1, outBuffer);
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// The second time with the same buffer, the outBuffer is nullptr.
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mCache.getHwcBuffer(inSlot, mBuffer1, &outSlot, &outBuffer);
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EXPECT_EQ(expectedSlot, outSlot);
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EXPECT_EQ(nullptr, outBuffer.get());
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// With a new buffer, the outBuffer is the input.
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mCache.getHwcBuffer(inSlot, mBuffer2, &outSlot, &outBuffer);
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EXPECT_EQ(expectedSlot, outSlot);
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EXPECT_EQ(mBuffer2, outBuffer);
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// Again, the second request with the same buffer sets outBuffer to nullptr.
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mCache.getHwcBuffer(inSlot, mBuffer2, &outSlot, &outBuffer);
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EXPECT_EQ(expectedSlot, outSlot);
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EXPECT_EQ(nullptr, outBuffer.get());
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// Setting a slot to use nullptr lookslike works, but note that
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// the output values make it look like no new buffer is being set....
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mCache.getHwcBuffer(inSlot, sp<GraphicBuffer>(), &outSlot, &outBuffer);
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EXPECT_EQ(expectedSlot, outSlot);
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EXPECT_EQ(nullptr, outBuffer.get());
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}
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impl::HwcBufferCache mCache;
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sp<GraphicBuffer> mBuffer1{new GraphicBuffer(1, 1, HAL_PIXEL_FORMAT_RGBA_8888, 1, 0)};
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sp<GraphicBuffer> mBuffer2{new GraphicBuffer(1, 1, HAL_PIXEL_FORMAT_RGBA_8888, 1, 0)};
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};
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TEST_F(HwcBufferCacheTest, cacheWorksForSlotZero) {
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testSlot(0, 0);
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}
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TEST_F(HwcBufferCacheTest, cacheWorksForMaxSlot) {
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testSlot(BufferQueue::NUM_BUFFER_SLOTS - 1, BufferQueue::NUM_BUFFER_SLOTS - 1);
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}
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TEST_F(HwcBufferCacheTest, cacheMapsNegativeSlotToZero) {
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testSlot(-123, 0);
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}
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} // namespace
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} // namespace android::compositionengine
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