| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| /* |
| * Copyright (C) 2019, Google Inc. |
| * |
| * camera3_hal.cpp - Android Camera HALv3 module |
| */ |
| |
| #include <hardware/camera_common.h> |
| |
| #include <libcamera/base/log.h> |
| |
| #include "camera_device.h" |
| #include "camera_hal_manager.h" |
| |
| using namespace libcamera; |
| |
| LOG_DEFINE_CATEGORY(HAL) |
| |
| /*------------------------------------------------------------------------------ |
| * Android Camera HAL callbacks |
| */ |
| |
| static int hal_get_number_of_cameras() |
| { |
| return CameraHalManager::instance()->numCameras(); |
| } |
| |
| static int hal_get_camera_info(int id, struct camera_info *info) |
| { |
| return CameraHalManager::instance()->getCameraInfo(id, info); |
| } |
| |
| static int hal_set_callbacks(const camera_module_callbacks_t *callbacks) |
| { |
| CameraHalManager::instance()->setCallbacks(callbacks); |
| |
| return 0; |
| } |
| |
| static int hal_open_legacy([[maybe_unused]] const struct hw_module_t *module, |
| [[maybe_unused]] const char *id, |
| [[maybe_unused]] uint32_t halVersion, |
| [[maybe_unused]] struct hw_device_t **device) |
| { |
| return -ENOSYS; |
| } |
| |
| static int hal_set_torch_mode([[maybe_unused]] const char *camera_id, |
| [[maybe_unused]] bool enabled) |
| { |
| return -ENOSYS; |
| } |
| |
| /* |
| * First entry point of the camera HAL module. |
| * |
| * Initialize the HAL but does not open any camera device yet (see hal_dev_open) |
| */ |
| static int hal_init() |
| { |
| LOG(HAL, Info) << "Initialising Android camera HAL"; |
| |
| CameraHalManager::instance()->init(); |
| |
| return 0; |
| } |
| |
| /*------------------------------------------------------------------------------ |
| * Android Camera Device |
| */ |
| |
| static int hal_dev_open(const hw_module_t *module, const char *name, |
| hw_device_t **device) |
| { |
| LOG(HAL, Debug) << "Open camera " << name; |
| |
| int id = atoi(name); |
| |
| auto [camera, ret] = CameraHalManager::instance()->open(id, module); |
| if (!camera) { |
| LOG(HAL, Error) |
| << "Failed to open camera module '" << id << "'"; |
| return ret == -EBUSY ? -EUSERS : ret; |
| } |
| |
| *device = &camera->camera3Device()->common; |
| |
| return 0; |
| } |
| |
| static struct hw_module_methods_t hal_module_methods = { |
| .open = hal_dev_open, |
| }; |
| |
| camera_module_t HAL_MODULE_INFO_SYM = { |
| .common = { |
| .tag = HARDWARE_MODULE_TAG, |
| .module_api_version = CAMERA_MODULE_API_VERSION_2_4, |
| .hal_api_version = HARDWARE_HAL_API_VERSION, |
| .id = CAMERA_HARDWARE_MODULE_ID, |
| .name = "libcamera camera HALv3 module", |
| .author = "libcamera", |
| .methods = &hal_module_methods, |
| .dso = nullptr, |
| .reserved = {}, |
| }, |
| |
| .get_number_of_cameras = hal_get_number_of_cameras, |
| .get_camera_info = hal_get_camera_info, |
| .set_callbacks = hal_set_callbacks, |
| .get_vendor_tag_ops = nullptr, |
| .open_legacy = hal_open_legacy, |
| .set_torch_mode = hal_set_torch_mode, |
| .init = hal_init, |
| .reserved = {}, |
| }; |