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 CAMERA_HAL_H_
18#define CAMERA_HAL_H_
19
20#include <hardware/hardware.h>
21#include <hardware/camera_common.h>
22#include <utils/Vector.h>
23#include <utils/Mutex.h>
24#include "HotplugThread.h"
25#include "Camera.h"
26
27namespace usb_camera_hal {
28
29class HotplugThread;
30
31/**
32 * CameraHAL contains all module state that isn't specific to an individual camera device
33 */
34class CameraHAL {
35    public:
36        CameraHAL();
37        ~CameraHAL();
38
39        // Camera Module Interface (see <hardware/camera_common.h>)
40        int getNumberOfCameras();
41        int getCameraInfo(int camera_id, struct camera_info *info);
42        int setCallbacks(const camera_module_callbacks_t *callbacks);
43        void getVendorTagOps(vendor_tag_ops_t* ops);
44
45        // Hardware Module Interface (see <hardware/hardware.h>)
46        int open(const hw_module_t* mod, const char* name, hw_device_t** dev);
47
48    private:
49        // Callback handle
50        const camera_module_callbacks_t *mCallbacks;
51        android::Vector<Camera*> mCameras;
52        // Lock to protect the module method calls.
53        android::Mutex mModuleLock;
54        // Hot plug thread managing camera hot plug.
55        HotplugThread *mHotplugThread;
56
57};
58} // namespace usb_camera_hal
59
60#endif // CAMERA_HAL_H_
61