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465 lines
16 KiB
465 lines
16 KiB
4 months ago
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/*
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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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#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
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#include "EvsEnumerator.h"
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#include "EvsCamera.h"
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#include "EvsDisplay.h"
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#include "EvsUltrasonicsArray.h"
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namespace android {
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namespace hardware {
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namespace automotive {
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namespace evs {
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namespace V1_1 {
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namespace implementation {
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// NOTE: All members values are static so that all clients operate on the same state
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// That is to say, this is effectively a singleton despite the fact that HIDL
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// constructs a new instance for each client.
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std::list<EvsEnumerator::CameraRecord> EvsEnumerator::sCameraList;
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wp<EvsDisplay> EvsEnumerator::sActiveDisplay;
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unique_ptr<ConfigManager> EvsEnumerator::sConfigManager;
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sp<IAutomotiveDisplayProxyService> EvsEnumerator::sDisplayProxyService;
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std::unordered_map<uint8_t, uint64_t> EvsEnumerator::sDisplayPortList;
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std::list<EvsEnumerator::UltrasonicsArrayRecord> EvsEnumerator::sUltrasonicsArrayRecordList;
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EvsEnumerator::EvsEnumerator(sp<IAutomotiveDisplayProxyService> windowService) {
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ALOGD("EvsEnumerator created");
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// Add sample camera data to our list of cameras
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// In a real driver, this would be expected to can the available hardware
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sConfigManager =
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ConfigManager::Create("/vendor/etc/automotive/evs/evs_default_configuration.xml");
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// Add available cameras
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for (auto v : sConfigManager->getCameraList()) {
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sCameraList.emplace_back(v.c_str());
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}
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if (sDisplayProxyService == nullptr) {
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/* sets a car-window service handle */
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sDisplayProxyService = windowService;
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}
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// Add available displays
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if (sDisplayProxyService != nullptr) {
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// Get a display ID list.
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sDisplayProxyService->getDisplayIdList([](const auto& displayIds) {
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for (const auto& id : displayIds) {
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const auto port = id & 0xF;
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sDisplayPortList.insert_or_assign(port, id);
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}
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});
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}
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// Add ultrasonics array desc.
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sUltrasonicsArrayRecordList.emplace_back(
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EvsUltrasonicsArray::GetMockArrayDesc("front_array"));
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}
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// Methods from ::android::hardware::automotive::evs::V1_0::IEvsEnumerator follow.
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Return<void> EvsEnumerator::getCameraList(getCameraList_cb _hidl_cb) {
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ALOGD("getCameraList");
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const unsigned numCameras = sCameraList.size();
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// Build up a packed array of CameraDesc for return
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// NOTE: Only has to live until the callback returns
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std::vector<CameraDesc_1_0> descriptions;
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descriptions.reserve(numCameras);
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for (const auto& cam : sCameraList) {
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descriptions.push_back( cam.desc.v1 );
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}
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// Encapsulate our camera descriptions in the HIDL vec type
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hidl_vec<CameraDesc_1_0> hidlCameras(descriptions);
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// Send back the results
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ALOGD("reporting %zu cameras available", hidlCameras.size());
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_hidl_cb(hidlCameras);
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// HIDL convention says we return Void if we sent our result back via callback
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return Void();
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}
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Return<sp<IEvsCamera_1_0>> EvsEnumerator::openCamera(const hidl_string& cameraId) {
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ALOGD("openCamera");
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// Find the named camera
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CameraRecord *pRecord = nullptr;
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for (auto &&cam : sCameraList) {
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if (cam.desc.v1.cameraId == cameraId) {
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// Found a match!
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pRecord = &cam;
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break;
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}
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}
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// Is this a recognized camera id?
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if (!pRecord) {
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ALOGE("Requested camera %s not found", cameraId.c_str());
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return nullptr;
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}
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// Has this camera already been instantiated by another caller?
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sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
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if (pActiveCamera != nullptr) {
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ALOGW("Killing previous camera because of new caller");
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closeCamera(pActiveCamera);
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}
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// Construct a camera instance for the caller
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if (sConfigManager == nullptr) {
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pActiveCamera = EvsCamera::Create(cameraId.c_str());
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} else {
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pActiveCamera = EvsCamera::Create(cameraId.c_str(),
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sConfigManager->getCameraInfo(cameraId));
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}
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pRecord->activeInstance = pActiveCamera;
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if (pActiveCamera == nullptr) {
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ALOGE("Failed to allocate new EvsCamera object for %s\n", cameraId.c_str());
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}
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return pActiveCamera;
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}
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Return<void> EvsEnumerator::closeCamera(const ::android::sp<IEvsCamera_1_0>& pCamera) {
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ALOGD("closeCamera");
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auto pCamera_1_1 = IEvsCamera_1_1::castFrom(pCamera).withDefault(nullptr);
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if (pCamera_1_1 == nullptr) {
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ALOGE("Ignoring call to closeCamera with null camera ptr");
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return Void();
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}
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// Get the camera id so we can find it in our list
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std::string cameraId;
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pCamera_1_1->getCameraInfo_1_1([&cameraId](CameraDesc desc) {
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cameraId = desc.v1.cameraId;
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}
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);
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// Find the named camera
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CameraRecord *pRecord = nullptr;
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for (auto &&cam : sCameraList) {
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if (cam.desc.v1.cameraId == cameraId) {
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// Found a match!
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pRecord = &cam;
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break;
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}
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}
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// Is the display being destroyed actually the one we think is active?
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if (!pRecord) {
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ALOGE("Asked to close a camera who's name isn't recognized");
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} else {
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sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
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if (pActiveCamera == nullptr) {
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ALOGE("Somehow a camera is being destroyed when the enumerator didn't know one existed");
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} else if (pActiveCamera != pCamera_1_1) {
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// This can happen if the camera was aggressively reopened, orphaning this previous instance
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ALOGW("Ignoring close of previously orphaned camera - why did a client steal?");
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} else {
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// Drop the active camera
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pActiveCamera->forceShutdown();
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pRecord->activeInstance = nullptr;
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}
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}
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return Void();
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}
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Return<sp<IEvsDisplay_1_0>> EvsEnumerator::openDisplay() {
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ALOGD("openDisplay");
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// If we already have a display active, then we need to shut it down so we can
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// give exclusive access to the new caller.
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sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
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if (pActiveDisplay != nullptr) {
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ALOGW("Killing previous display because of new caller");
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closeDisplay(pActiveDisplay);
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}
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// Create a new display interface and return it
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pActiveDisplay = new EvsDisplay();
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sActiveDisplay = pActiveDisplay;
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ALOGD("Returning new EvsDisplay object %p", pActiveDisplay.get());
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return pActiveDisplay;
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}
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Return<void> EvsEnumerator::getDisplayIdList(getDisplayIdList_cb _list_cb) {
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hidl_vec<uint8_t> ids;
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ids.resize(sDisplayPortList.size());
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unsigned i = 0;
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for (const auto& [port, id] : sDisplayPortList) {
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ids[i++] = port;
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}
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_list_cb(ids);
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return Void();
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}
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Return<sp<IEvsDisplay>> EvsEnumerator::openDisplay_1_1(uint8_t port) {
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ALOGD("%s", __FUNCTION__);
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// If we already have a display active, then we need to shut it down so we can
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// give exclusive access to the new caller.
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sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
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if (pActiveDisplay != nullptr) {
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ALOGW("Killing previous display because of new caller");
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closeDisplay(pActiveDisplay);
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}
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// Create a new display interface and return it
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pActiveDisplay = new EvsDisplay(sDisplayProxyService, sDisplayPortList[port]);
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sActiveDisplay = pActiveDisplay;
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ALOGD("Returning new EvsDisplay object %p", pActiveDisplay.get());
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return pActiveDisplay;
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}
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Return<void> EvsEnumerator::closeDisplay(const ::android::sp<IEvsDisplay_1_0>& pDisplay) {
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ALOGD("closeDisplay");
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// Do we still have a display object we think should be active?
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sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
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if (pActiveDisplay == nullptr) {
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ALOGE("Somehow a display is being destroyed when the enumerator didn't know one existed");
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} else if (sActiveDisplay != pDisplay) {
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ALOGW("Ignoring close of previously orphaned display - why did a client steal?");
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} else {
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// Drop the active display
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pActiveDisplay->forceShutdown();
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sActiveDisplay = nullptr;
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}
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return Void();
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}
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Return<DisplayState> EvsEnumerator::getDisplayState() {
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ALOGD("getDisplayState");
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// Do we still have a display object we think should be active?
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sp<IEvsDisplay> pActiveDisplay = sActiveDisplay.promote();
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if (pActiveDisplay != nullptr) {
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return pActiveDisplay->getDisplayState();
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} else {
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return DisplayState::NOT_OPEN;
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}
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}
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// Methods from ::android::hardware::automotive::evs::V1_1::IEvsEnumerator follow.
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Return<void> EvsEnumerator::getCameraList_1_1(getCameraList_1_1_cb _hidl_cb) {
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ALOGD("getCameraList");
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const unsigned numCameras = sCameraList.size();
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// Build up a packed array of CameraDesc for return
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// NOTE: Only has to live until the callback returns
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std::vector<CameraDesc_1_1> descriptions;
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descriptions.reserve(numCameras);
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for (const auto& cam : sCameraList) {
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descriptions.push_back( cam.desc );
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}
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// Encapsulate our camera descriptions in the HIDL vec type
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hidl_vec<CameraDesc_1_1> hidlCameras(descriptions);
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// Send back the results
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ALOGD("reporting %zu cameras available", hidlCameras.size());
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_hidl_cb(hidlCameras);
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// HIDL convention says we return Void if we sent our result back via callback
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return Void();
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}
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Return<sp<IEvsCamera_1_1>>
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EvsEnumerator::openCamera_1_1(const hidl_string& cameraId,
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const Stream& streamCfg) {
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// Find the named camera
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CameraRecord *pRecord = nullptr;
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for (auto &&cam : sCameraList) {
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if (cam.desc.v1.cameraId == cameraId) {
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// Found a match!
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pRecord = &cam;
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break;
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}
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}
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// Is this a recognized camera id?
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if (!pRecord) {
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ALOGE("Requested camera %s not found", cameraId.c_str());
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return nullptr;
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}
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// Has this camera already been instantiated by another caller?
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sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
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if (pActiveCamera != nullptr) {
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ALOGW("Killing previous camera because of new caller");
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closeCamera(pActiveCamera);
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}
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// Construct a camera instance for the caller
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if (sConfigManager == nullptr) {
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pActiveCamera = EvsCamera::Create(cameraId.c_str());
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} else {
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pActiveCamera = EvsCamera::Create(cameraId.c_str(),
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sConfigManager->getCameraInfo(cameraId),
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&streamCfg);
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}
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pRecord->activeInstance = pActiveCamera;
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if (pActiveCamera == nullptr) {
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ALOGE("Failed to allocate new EvsCamera object for %s\n", cameraId.c_str());
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}
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return pActiveCamera;
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}
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EvsEnumerator::CameraRecord* EvsEnumerator::findCameraById(const std::string& cameraId) {
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// Find the named camera
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CameraRecord *pRecord = nullptr;
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for (auto &&cam : sCameraList) {
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if (cam.desc.v1.cameraId == cameraId) {
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// Found a match!
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pRecord = &cam;
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break;
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}
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}
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return pRecord;
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}
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EvsEnumerator::UltrasonicsArrayRecord* EvsEnumerator::findUltrasonicsArrayById(
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const std::string& ultrasonicsArrayId) {
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auto recordIt = std::find_if(
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sUltrasonicsArrayRecordList.begin(), sUltrasonicsArrayRecordList.end(),
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[&ultrasonicsArrayId](const UltrasonicsArrayRecord& record) {
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return ultrasonicsArrayId == record.desc.ultrasonicsArrayId;});
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return (recordIt != sUltrasonicsArrayRecordList.end()) ? &*recordIt : nullptr;
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}
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Return<void> EvsEnumerator::getUltrasonicsArrayList(getUltrasonicsArrayList_cb _hidl_cb) {
|
||
|
|
hidl_vec<UltrasonicsArrayDesc> desc;
|
||
|
|
desc.resize(sUltrasonicsArrayRecordList.size());
|
||
|
|
|
||
|
|
// Copy over desc from sUltrasonicsArrayRecordList.
|
||
|
|
for (auto p = std::make_pair(sUltrasonicsArrayRecordList.begin(), desc.begin());
|
||
|
|
p.first != sUltrasonicsArrayRecordList.end(); p.first++, p.second++) {
|
||
|
|
*p.second = p.first->desc;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Send back the results
|
||
|
|
ALOGD("reporting %zu ultrasonics arrays available", desc.size());
|
||
|
|
_hidl_cb(desc);
|
||
|
|
|
||
|
|
// HIDL convention says we return Void if we sent our result back via callback
|
||
|
|
return Void();
|
||
|
|
}
|
||
|
|
|
||
|
|
Return<sp<IEvsUltrasonicsArray>> EvsEnumerator::openUltrasonicsArray(
|
||
|
|
const hidl_string& ultrasonicsArrayId) {
|
||
|
|
// Find the named ultrasonic array.
|
||
|
|
UltrasonicsArrayRecord* pRecord = findUltrasonicsArrayById(ultrasonicsArrayId);
|
||
|
|
|
||
|
|
// Is this a recognized ultrasonic array id?
|
||
|
|
if (!pRecord) {
|
||
|
|
ALOGE("Requested ultrasonics array %s not found", ultrasonicsArrayId.c_str());
|
||
|
|
return nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Has this ultrasonic array already been instantiated by another caller?
|
||
|
|
sp<EvsUltrasonicsArray> pActiveUltrasonicsArray = pRecord->activeInstance.promote();
|
||
|
|
if (pActiveUltrasonicsArray != nullptr) {
|
||
|
|
ALOGW("Killing previous ultrasonics array because of new caller");
|
||
|
|
closeUltrasonicsArray(pActiveUltrasonicsArray);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Construct a ultrasonic array instance for the caller
|
||
|
|
pActiveUltrasonicsArray = EvsUltrasonicsArray::Create(ultrasonicsArrayId.c_str());
|
||
|
|
pRecord->activeInstance = pActiveUltrasonicsArray;
|
||
|
|
if (pActiveUltrasonicsArray == nullptr) {
|
||
|
|
ALOGE("Failed to allocate new EvsUltrasonicsArray object for %s\n",
|
||
|
|
ultrasonicsArrayId.c_str());
|
||
|
|
}
|
||
|
|
|
||
|
|
return pActiveUltrasonicsArray;
|
||
|
|
}
|
||
|
|
|
||
|
|
Return<void> EvsEnumerator::closeUltrasonicsArray(
|
||
|
|
const sp<IEvsUltrasonicsArray>& pEvsUltrasonicsArray) {
|
||
|
|
|
||
|
|
if (pEvsUltrasonicsArray.get() == nullptr) {
|
||
|
|
ALOGE("Ignoring call to closeUltrasonicsArray with null ultrasonics array");
|
||
|
|
return Void();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the ultrasonics array id so we can find it in our list.
|
||
|
|
std::string ultrasonicsArrayId;
|
||
|
|
pEvsUltrasonicsArray->getUltrasonicArrayInfo([&ultrasonicsArrayId](UltrasonicsArrayDesc desc) {
|
||
|
|
ultrasonicsArrayId.assign(desc.ultrasonicsArrayId);
|
||
|
|
});
|
||
|
|
|
||
|
|
// Find the named ultrasonics array
|
||
|
|
UltrasonicsArrayRecord* pRecord = findUltrasonicsArrayById(ultrasonicsArrayId);
|
||
|
|
if (!pRecord) {
|
||
|
|
ALOGE("Asked to close a ultrasonics array whose name isnt not found");
|
||
|
|
return Void();
|
||
|
|
}
|
||
|
|
|
||
|
|
sp<EvsUltrasonicsArray> pActiveUltrasonicsArray = pRecord->activeInstance.promote();
|
||
|
|
|
||
|
|
if (pActiveUltrasonicsArray.get() == nullptr) {
|
||
|
|
ALOGE("Somehow a ultrasonics array is being destroyed when the enumerator didn't know "
|
||
|
|
"one existed");
|
||
|
|
} else if (pActiveUltrasonicsArray != pEvsUltrasonicsArray) {
|
||
|
|
// This can happen if the ultrasonics array was aggressively reopened,
|
||
|
|
// orphaning this previous instance
|
||
|
|
ALOGW("Ignoring close of previously orphaned ultrasonics array - why did a client steal?");
|
||
|
|
} else {
|
||
|
|
// Drop the active ultrasonics array
|
||
|
|
pActiveUltrasonicsArray->forceShutdown();
|
||
|
|
pRecord->activeInstance = nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
return Void();
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace implementation
|
||
|
|
} // namespace V1_1
|
||
|
|
} // namespace evs
|
||
|
|
} // namespace automotive
|
||
|
|
} // namespace hardware
|
||
|
|
} // namespace android
|