/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * camera_hal_manager.cpp - libcamera Android Camera Manager */ #include "camera_hal_manager.h" #include #include #include #include "camera_device.h" using namespace libcamera; LOG_DECLARE_CATEGORY(HAL) /* * \class CameraHalManager * * The HAL camera manager is initializated at camera_module_t 'hal_init()' time * and spawns its own thread where libcamera related events are dispatched to. * It wraps the libcamera CameraManager operations and provides helpers for the * camera_module_t operations, to retrieve the number of cameras in the system, * their static information and to open camera devices. */ CameraHalManager::CameraHalManager() : cameraManager_(nullptr), callbacks_(nullptr), numInternalCameras_(0), nextExternalCameraId_(firstExternalCameraId_) { } /* CameraManager calls stop() in the destructor. */ CameraHalManager::~CameraHalManager() = default; /* static */ CameraHalManager *CameraHalManager::instance() { static CameraHalManager *cameraHalManager = new CameraHalManager; return cameraHalManager; } int CameraHalManager::init() { cameraManager_ = std::make_unique(); /* * If the configuration file is not available the HAL only supports * external cameras. If it exists but it's not valid then error out. */ if (halConfig_.exists() && !halConfig_.isValid()) { LOG(HAL, Error) << "HAL configuration file is not valid"; return -EINVAL; } /* Support camera hotplug. */ cameraManager_->cameraAdded.connect(this, &CameraHalManager::cameraAdded); cameraManager_->cameraRemoved.connect(this, &CameraHalManager::cameraRemoved); int ret = cameraManager_->start(); if (ret) { LOG(HAL, Error) << "Failed to start camera manager: " << strerror(-ret); cameraManager_.reset(); return ret; } return 0; } std::tuple CameraHalManager::open(unsigned int id, const hw_module_t *hardwareModule) { MutexLocker locker(mutex_); if (!callbacks_) { LOG(HAL, Error) << "Can't open camera before callbacks are set"; return { nullptr, -ENODEV }; } CameraDevice *camera = cameraDeviceFromHalId(id); if (!camera) { LOG(HAL, Error) << "Invalid camera id '" << id << "'"; return { nullptr, -ENODEV }; } int ret = camera->open(hardwareModule); if (ret) return { nullptr, ret }; LOG(HAL, Info) << "Open camera '" << id << "'"; return { camera, 0 }; } void CameraHalManager::cameraAdded(std::shared_ptr cam) { unsigned int id; bool isCameraExternal = false; bool isCameraNew = false; MutexLocker locker(mutex_); /* * Each camera is assigned a unique integer ID when it is seen for the * first time. If the camera has been seen before, the previous ID is * re-used. * * IDs starts from '0' for internal cameras and '1000' for external * cameras. */ auto iter = cameraIdsMap_.find(cam->id()); if (iter != cameraIdsMap_.end()) { id = iter->second; if (id >= firstExternalCameraId_) isCameraExternal = true; } else { isCameraNew = true; /* * Now check if this is an external camera and assign * its id accordingly. */ if (cameraLocation(cam.get()) == properties::CameraLocationExternal) { isCameraExternal = true; id = nextExternalCameraId_; } else { id = numInternalCameras_; } } /* * The configuration file must be valid, and contain a corresponding * entry for internal cameras. External cameras can be initialized * without configuration file. */ if (!isCameraExternal && !halConfig_.exists()) { LOG(HAL, Error) << "HAL configuration file is mandatory for internal cameras"; return; } const CameraConfigData *cameraConfigData = halConfig_.cameraConfigData(cam->id()); /* * Some cameras whose location is reported by libcamera as external may * actually be internal to the device. This is common with UVC cameras * that are integrated in a laptop. In that case the real location * should be specified in the configuration file. * * If the camera location is external and a configuration entry exists * for it, override its location. */ if (isCameraNew && isCameraExternal) { if (cameraConfigData && cameraConfigData->facing != -1) { isCameraExternal = false; id = numInternalCameras_; } } if (!isCameraExternal && !cameraConfigData) { LOG(HAL, Error) << "HAL configuration entry for internal camera " << cam->id() << " is missing"; return; } /* Create a CameraDevice instance to wrap the libcamera Camera. */ std::unique_ptr camera = CameraDevice::create(id, cam); int ret = camera->initialize(cameraConfigData); if (ret) { LOG(HAL, Error) << "Failed to initialize camera: " << cam->id(); return; } if (isCameraNew) { cameraIdsMap_.emplace(cam->id(), id); if (isCameraExternal) nextExternalCameraId_++; else numInternalCameras_++; } cameras_.emplace_back(std::move(camera)); if (callbacks_) callbacks_->camera_device_status_change(callbacks_, id, CAMERA_DEVICE_STATUS_PRESENT); LOG(HAL, Debug) << "Camera ID: " << id << " added successfully."; } void CameraHalManager::cameraRemoved(std::shared_ptr cam) { MutexLocker locker(mutex_); auto iter = std::find_if(cameras_.begin(), cameras_.end(), [&cam](const std::unique_ptr &camera) { return cam == camera->camera(); }); if (iter == cameras_.end()) return; /* * CAMERA_DEVICE_STATUS_NOT_PRESENT should be set for external cameras * only. */ unsigned int id = (*iter)->id(); if (id >= firstExternalCameraId_) callbacks_->camera_device_status_change(callbacks_, id, CAMERA_DEVICE_STATUS_NOT_PRESENT); /* * \todo Check if the camera is already open and running. * Inform the framework about its absence before deleting its * reference here. */ cameras_.erase(iter); LOG(HAL, Debug) << "Camera ID: " << id << " removed successfully."; } int32_t CameraHalManager::cameraLocation(const Camera *cam) { const ControlList &properties = cam->properties(); if (!properties.contains(properties::Location)) return -1; return properties.get(properties::Location); } CameraDevice *CameraHalManager::cameraDeviceFromHalId(unsigned int id) { auto iter = std::find_if(cameras_.begin(), cameras_.end(), [id](const std::unique_ptr &camera) { return camera->id() == id; }); if (iter == cameras_.end()) return nullptr; return iter->get(); } unsigned int CameraHalManager::numCameras() const { return numInternalCameras_; } int CameraHalManager::getCameraInfo(unsigned int id, struct camera_info *info) { if (!info) return -EINVAL; MutexLocker locker(mutex_); CameraDevice *camera = cameraDeviceFromHalId(id); if (!camera) { LOG(HAL, Error) << "Invalid camera id '" << id << "'"; return -EINVAL; } info->facing = camera->facing(); info->orientation = camera->orientation(); info->device_version = CAMERA_DEVICE_API_VERSION_3_3; info->resource_cost = 0; info->static_camera_characteristics = camera->getStaticMetadata(); info->conflicting_devices = nullptr; info->conflicting_devices_length = 0; return 0; } void CameraHalManager::setCallbacks(const camera_module_callbacks_t *callbacks) { callbacks_ = callbacks; MutexLocker locker(mutex_); /* * Some external cameras may have been identified before the callbacks_ * were set. Iterate all existing external cameras and mark them as * CAMERA_DEVICE_STATUS_PRESENT explicitly. * * Internal cameras are already assumed to be present at module load * time by the Android framework. */ for (const std::unique_ptr &camera : cameras_) { unsigned int id = camera->id(); if (id >= firstExternalCameraId_) callbacks_->camera_device_status_change(callbacks_, id, CAMERA_DEVICE_STATUS_PRESENT); } } 6 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * geometry.cpp - Geometry classes tests
 */

#include <iostream>

#include <libcamera/geometry.h>

#include "test.h"

using namespace std;
using namespace libcamera;

class GeometryTest : public Test
{
protected:
	bool compare(const Size &lhs, const Size &rhs,
		     bool (*op)(const Size &lhs, const Size &rhs),
		     const char *opName, bool expect)
	{
		bool result = op(lhs, rhs);

		if (result != expect) {
			cout << "Size(" << lhs.width << ", " << lhs.height << ") "
			     << opName << " "
			     << "Size(" << rhs.width << ", " << rhs.height << ") "
			     << "test failed" << std::endl;
			return false;
		}

		return true;
	}

	int run()
	{
		if (!Size().isNull() || !Size(0, 0).isNull()) {
			cout << "Null size incorrectly reported as not null" << endl;
			return TestFail;
		}

		if (Size(0, 100).isNull() || Size(100, 0).isNull() || Size(100, 100).isNull()) {
			cout << "Non-null size incorrectly reported as null" << endl;
			return TestFail;
		}

		/* Test alignDownTo(), alignUpTo(), boundTo() and expandTo() */
		Size s(50, 50);

		s.alignDownTo(16, 16);
		if (s != Size(48, 48)) {
			cout << "Size::alignDownTo() test failed" << endl;
			return TestFail;
		}

		s.alignUpTo(32, 32);
		if (s != Size(64, 64)) {
			cout << "Size::alignUpTo() test failed" << endl;
			return TestFail;
		}

		s.boundTo({ 40, 40 });
		if (s != Size(40, 40)) {
			cout << "Size::boundTo() test failed" << endl;
			return TestFail;
		}

		s.expandTo({ 50, 50 });
		if (s != Size(50, 50)) {
			cout << "Size::expandTo() test failed" << endl;
			return TestFail;
		}

		s.alignDownTo(16, 16).alignUpTo(32, 32)
		 .boundTo({ 40, 80 }).expandTo({ 16, 80 });
		if (s != Size(40, 80)) {
			cout << "Size chained in-place modifiers test failed" << endl;
			return TestFail;
		}

		/* Test alignedDownTo(), alignedUpTo(), boundedTo() and expandedTo() */
		if (Size(0, 0).alignedDownTo(16, 8) != Size(0, 0) ||
		    Size(1, 1).alignedDownTo(16, 8) != Size(0, 0) ||
		    Size(16, 8).alignedDownTo(16, 8) != Size(16, 8)) {
			cout << "Size::alignedDownTo() test failed" << endl;
			return TestFail;
		}

		if (Size(0, 0).alignedUpTo(16, 8) != Size(0, 0) ||
		    Size(1, 1).alignedUpTo(16, 8) != Size(16, 8) ||
		    Size(16, 8).alignedUpTo(16, 8) != Size(16, 8)) {
			cout << "Size::alignedUpTo() test failed" << endl;
			return TestFail;
		}

		if (Size(0, 0).boundedTo({ 100, 100 }) != Size(0, 0) ||
		    Size(200, 50).boundedTo({ 100, 100 }) != Size(100, 50) ||
		    Size(50, 200).boundedTo({ 100, 100 }) != Size(50, 100)) {
			cout << "Size::boundedTo() test failed" << endl;
			return TestFail;
		}

		if (Size(0, 0).expandedTo({ 100, 100 }) != Size(100, 100) ||
		    Size(200, 50).expandedTo({ 100, 100 }) != Size(200, 100) ||
		    Size(50, 200).expandedTo({ 100, 100 }) != Size(100, 200)) {
			cout << "Size::expandedTo() test failed" << endl;
			return TestFail;
		}

		/* Test Size equality and inequality. */
		if (!compare(Size(100, 100), Size(100, 100), &operator==, "==", true))
			return TestFail;
		if (!compare(Size(100, 100), Size(100, 100), &operator!=, "!=", false))
			return TestFail;