151 lines
4.6 KiB
C++
151 lines
4.6 KiB
C++
/*
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* Copyright (C) 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 "HalDisplay.h"
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#include <android-base/logging.h>
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#include <android-base/stringprintf.h>
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#include <ui/DisplayMode.h>
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#include <ui/DisplayState.h>
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#include <inttypes.h>
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using ::android::base::StringAppendF;
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using ::android::hardware::Return;
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using ::android::hardware::Void;
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using ::android::hardware::automotive::evs::V1_0::EvsResult;
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using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
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using EvsDisplayState = ::android::hardware::automotive::evs::V1_0::DisplayState;
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using IEvsDisplay_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
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using IEvsDisplay_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsDisplay;
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namespace android::automotive::evs::V1_1::implementation {
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HalDisplay::HalDisplay(sp<IEvsDisplay_1_0> display, int32_t id) : mHwDisplay(display), mId(id) {}
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HalDisplay::~HalDisplay() {
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shutdown();
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}
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void HalDisplay::shutdown() {
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// simply release a strong pointer to remote display object.
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mHwDisplay = nullptr;
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}
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/**
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* Returns a strong pointer to remote display object.
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*/
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sp<IEvsDisplay_1_0> HalDisplay::getHwDisplay() {
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return mHwDisplay;
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}
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/**
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* Gets basic display information from a hardware display object
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* and returns.
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*/
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Return<void> HalDisplay::getDisplayInfo(getDisplayInfo_cb _hidl_cb) {
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if (mHwDisplay) {
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mHwDisplay->getDisplayInfo(_hidl_cb);
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}
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return Void();
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}
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/**
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* Sets the display state as what the clients wants.
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*/
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Return<EvsResult> HalDisplay::setDisplayState(EvsDisplayState state) {
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if (mHwDisplay) {
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return mHwDisplay->setDisplayState(state);
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} else {
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return EvsResult::UNDERLYING_SERVICE_ERROR;
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}
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}
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/**
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* Gets current display state from a hardware display object and return.
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*/
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Return<EvsDisplayState> HalDisplay::getDisplayState() {
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if (mHwDisplay) {
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return mHwDisplay->getDisplayState();
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} else {
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return EvsDisplayState::DEAD;
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}
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}
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/**
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* Returns a handle to a frame buffer associated with the display.
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*/
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Return<void> HalDisplay::getTargetBuffer(getTargetBuffer_cb _hidl_cb) {
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if (mHwDisplay) {
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mHwDisplay->getTargetBuffer(_hidl_cb);
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}
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return Void();
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}
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/**
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* Notifies the display that the buffer is ready to be used.
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*/
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Return<EvsResult> HalDisplay::returnTargetBufferForDisplay(const BufferDesc_1_0& buffer) {
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if (mHwDisplay) {
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return mHwDisplay->returnTargetBufferForDisplay(buffer);
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} else {
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return EvsResult::OWNERSHIP_LOST;
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}
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}
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/**
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* Gets basic display information from a hardware display object
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* and returns.
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*/
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Return<void> HalDisplay::getDisplayInfo_1_1(getDisplayInfo_1_1_cb _info_cb) {
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sp<IEvsDisplay_1_1> display = IEvsDisplay_1_1::castFrom(mHwDisplay).withDefault(nullptr);
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if (display != nullptr) {
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display->getDisplayInfo_1_1(_info_cb);
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}
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return Void();
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}
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std::string HalDisplay::toString(const char* indent) {
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std::string buffer;
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android::ui::DisplayMode displayMode;
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android::ui::DisplayState displayState;
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if (mId == std::numeric_limits<int32_t>::min()) {
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// Display identifier has not set
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StringAppendF(&buffer, "HalDisplay: Display port is unknown.\n");
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} else {
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StringAppendF(&buffer, "HalDisplay: Display port %" PRId32 "\n", mId);
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}
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getDisplayInfo_1_1([&](auto& config, auto& state) {
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displayMode = *(reinterpret_cast<const android::ui::DisplayMode*>(config.data()));
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displayState = *(reinterpret_cast<const android::ui::DisplayState*>(state.data()));
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});
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StringAppendF(&buffer, "%sWidth: %" PRId32 "\n", indent, displayMode.resolution.getWidth());
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StringAppendF(&buffer, "%sHeight: %" PRId32 "\n", indent, displayMode.resolution.getHeight());
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StringAppendF(&buffer, "%sRefresh rate: %f\n", indent, displayMode.refreshRate);
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StringAppendF(&buffer, "%sRotation: %" PRId32 "\n", indent,
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static_cast<int32_t>(displayState.orientation));
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return buffer;
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}
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} // namespace android::automotive::evs::V1_1::implementation
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