70 lines
3.3 KiB
C++
70 lines
3.3 KiB
C++
/*
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* Copyright (C) 2020 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 <gtest/gtest.h>
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#include <gui/DisplayEventReceiver.h>
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namespace android::test {
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#define CHECK_OFFSET(type, member, expected_offset) \
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static_assert((offsetof(type, member) == (expected_offset)))
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TEST(DisplayEventStructLayoutTest, TestEventAlignment) {
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static_assert(std::is_pod<DisplayEventReceiver::Event::VSync>::value);
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CHECK_OFFSET(DisplayEventReceiver::Event, vsync, 24);
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CHECK_OFFSET(DisplayEventReceiver::Event, hotplug, 24);
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CHECK_OFFSET(DisplayEventReceiver::Event, modeChange, 24);
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CHECK_OFFSET(DisplayEventReceiver::Event::Header, type, 0);
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CHECK_OFFSET(DisplayEventReceiver::Event::Header, displayId, 8);
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CHECK_OFFSET(DisplayEventReceiver::Event::Header, timestamp, 16);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync, count, 0);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync, vsyncData.frameInterval, 8);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync, vsyncData.preferredFrameTimelineIndex, 16);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync, vsyncData.frameTimelines, 24);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync, vsyncData.frameTimelines[0].vsyncId, 24);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync, vsyncData.frameTimelines[0].deadlineTimestamp,
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32);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync,
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vsyncData.frameTimelines[0].expectedPresentationTime, 40);
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// Also test the offsets of the last frame timeline. A loop is not used because the non-const
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// index cannot be used in static_assert.
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const int lastFrameTimelineOffset = /* Start of array */ 24 +
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(VsyncEventData::kFrameTimelinesLength - 1) * /* Size of FrameTimeline */ 24;
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync,
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vsyncData.frameTimelines[VsyncEventData::kFrameTimelinesLength - 1].vsyncId,
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lastFrameTimelineOffset);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync,
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vsyncData.frameTimelines[VsyncEventData::kFrameTimelinesLength - 1]
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.deadlineTimestamp,
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lastFrameTimelineOffset + 8);
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CHECK_OFFSET(DisplayEventReceiver::Event::VSync,
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vsyncData.frameTimelines[VsyncEventData::kFrameTimelinesLength - 1]
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.expectedPresentationTime,
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lastFrameTimelineOffset + 16);
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CHECK_OFFSET(DisplayEventReceiver::Event::Hotplug, connected, 0);
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CHECK_OFFSET(DisplayEventReceiver::Event::ModeChange, modeId, 0);
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CHECK_OFFSET(DisplayEventReceiver::Event::ModeChange, vsyncPeriod, 8);
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CHECK_OFFSET(DisplayEventReceiver::Event::FrameRateOverride, uid, 0);
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CHECK_OFFSET(DisplayEventReceiver::Event::FrameRateOverride, frameRateHz, 8);
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}
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} // namespace android::test
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