CameraModule.h revision 54298b338cf9f782f2ac681a15e6cbbb99649350 
1/*
2 * Copyright (C) 2015 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#ifndef ANDROID_SERVERS_CAMERA_CAMERAMODULE_H
18#define ANDROID_SERVERS_CAMERA_CAMERAMODULE_H
19
20#include <hardware/camera.h>
21#include <camera/CameraMetadata.h>
22#include <utils/Mutex.h>
23#include <utils/KeyedVector.h>
24
25namespace android {
26/**
27 * A wrapper class for HAL camera module.
28 *
29 * This class wraps camera_module_t returned from HAL to provide a wrapped
30 * get_camera_info implementation which CameraService generates some
31 * camera characteristics keys defined in newer HAL version on an older HAL.
32 */
33class CameraModule {
34public:
35    CameraModule(camera_module_t *module);
36
37    int getCameraInfo(int cameraId, struct camera_info *info);
38    int getNumberOfCameras(void);
39    int open(const char* id, struct hw_device_t** device);
40    int openLegacy(const char* id, uint32_t halVersion, struct hw_device_t** device);
41    int setCallbacks(const camera_module_callbacks_t *callbacks);
42    bool isVendorTagDefined();
43    void getVendorTagOps(vendor_tag_ops_t* ops);
44    int setTorchMode(const char* camera_id, bool enable);
45    uint16_t getModuleApiVersion();
46    const char* getModuleName();
47    uint16_t getHalApiVersion();
48    const char* getModuleAuthor();
49    // Only used by CameraModuleFixture native test. Do NOT use elsewhere.
50    void *getDso();
51
52private:
53    // Derive camera characteristics keys defined after HAL device version
54    static void deriveCameraCharacteristicsKeys(uint32_t deviceVersion, CameraMetadata &chars);
55    status_t filterOpenErrorCode(status_t err);
56
57    camera_module_t *mModule;
58    KeyedVector<int, camera_info> mCameraInfoMap;
59    KeyedVector<int, CameraMetadata> mCameraCharacteristicsMap;
60    Mutex mCameraInfoLock;
61};
62
63} // namespace android
64
65#endif
66
67