Alex Ray | 7ee0b7a | 2012-11-06 00:12:49 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <cstdlib> |
| 18 | #include <hardware/camera2.h> |
| 19 | |
| 20 | //#define LOG_NDEBUG 0 |
| 21 | #define LOG_TAG "CameraHAL" |
| 22 | #include <cutils/log.h> |
| 23 | |
| 24 | #include "Camera.h" |
| 25 | |
| 26 | /* |
| 27 | * This file serves as the entry point to the HAL. It contains the module |
| 28 | * structure and functions used by the framework to load and interface to this |
| 29 | * HAL, as well as the handles to the individual camera devices. |
| 30 | */ |
| 31 | |
| 32 | namespace default_camera_hal { |
| 33 | |
| 34 | enum camera_id_t { |
| 35 | CAMERA_A, |
| 36 | CAMERA_B, |
| 37 | NUM_CAMERAS |
| 38 | }; |
| 39 | |
| 40 | // Symbol used by the framework when loading the HAL, defined below. |
| 41 | extern "C" camera_module_t HAL_MODULE_INFO_SYM; |
| 42 | |
| 43 | // Camera devices created when the module is loaded. See Camera.h |
| 44 | static Camera gCameras[NUM_CAMERAS] = { |
| 45 | Camera(CAMERA_A, &HAL_MODULE_INFO_SYM.common), |
| 46 | Camera(CAMERA_B, &HAL_MODULE_INFO_SYM.common) |
| 47 | }; |
| 48 | |
| 49 | extern "C" { |
| 50 | |
| 51 | static int get_number_of_cameras() |
| 52 | { |
| 53 | ALOGV("%s", __func__); |
| 54 | return NUM_CAMERAS; |
| 55 | } |
| 56 | |
| 57 | static int get_camera_info(int id, struct camera_info* info) |
| 58 | { |
| 59 | ALOGV("%s: camera id %d: info=%p", __func__, id, info); |
| 60 | if (id < 0 || id >= NUM_CAMERAS) { |
| 61 | ALOGE("%s: Invalid camera id %d", __func__, id); |
| 62 | return -ENODEV; |
| 63 | } |
| 64 | return gCameras[id].getCameraInfo(info); |
| 65 | } |
| 66 | |
Alex Ray | bb13a32 | 2013-02-18 15:38:05 -0800 | [diff] [blame^] | 67 | static int open_device(const hw_module_t* module, const char* name, |
| 68 | hw_device_t** device) |
Alex Ray | 7ee0b7a | 2012-11-06 00:12:49 -0800 | [diff] [blame] | 69 | { |
| 70 | ALOGV("%s: module=%p, name=%s, device=%p", __func__, module, name, device); |
| 71 | char *nameEnd; |
| 72 | int id; |
| 73 | |
| 74 | id = strtol(name, &nameEnd, 10); |
| 75 | if (nameEnd != NULL) { |
| 76 | ALOGE("%s: Invalid camera id name %s", __func__, name); |
| 77 | return -EINVAL; |
| 78 | } else if (id < 0 || id >= NUM_CAMERAS) { |
| 79 | ALOGE("%s: Invalid camera id %d", __func__, id); |
| 80 | return -ENODEV; |
| 81 | } |
| 82 | *device = &gCameras[id].mDevice.common; |
| 83 | return gCameras[id].open(); |
| 84 | } |
| 85 | |
| 86 | static hw_module_methods_t gCameraModuleMethods = { |
| 87 | open : open_device |
| 88 | }; |
| 89 | |
Alex Ray | bb13a32 | 2013-02-18 15:38:05 -0800 | [diff] [blame^] | 90 | camera_module_t HAL_MODULE_INFO_SYM __attribute__ ((visibility("default"))) = { |
Alex Ray | 7ee0b7a | 2012-11-06 00:12:49 -0800 | [diff] [blame] | 91 | common : { |
| 92 | tag : HARDWARE_MODULE_TAG, |
| 93 | module_api_version : CAMERA_MODULE_API_VERSION_2_0, |
| 94 | hal_api_version : HARDWARE_HAL_API_VERSION, |
| 95 | id : CAMERA_HARDWARE_MODULE_ID, |
| 96 | name : "Reference Camera v2 HAL", |
| 97 | author : "The Android Open Source Project", |
| 98 | methods : &gCameraModuleMethods, |
| 99 | dso : NULL, |
| 100 | reserved : {0}, |
| 101 | }, |
| 102 | get_number_of_cameras : get_number_of_cameras, |
| 103 | get_camera_info : get_camera_info |
| 104 | }; |
| 105 | |
| 106 | } // extern "C" |
| 107 | } // namespace default_camera_hal |