1 /* 2 * Copyright (C) 2013 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_HARDWARE_ICAMERASERVICE_LISTENER_H 18 #define ANDROID_HARDWARE_ICAMERASERVICE_LISTENER_H 19 20 #include <utils/RefBase.h> 21 #include <binder/IInterface.h> 22 #include <binder/Parcel.h> 23 #include <hardware/camera_common.h> 24 25 namespace android { 26 27 class ICameraServiceListener : public IInterface 28 { 29 public: 30 31 /** 32 * Initial status will be transmitted with onStatusChange immediately 33 * after this listener is added to the service listener list. 34 * 35 * Allowed transitions: 36 * 37 * (Any) -> NOT_PRESENT 38 * NOT_PRESENT -> PRESENT 39 * NOT_PRESENT -> ENUMERATING 40 * ENUMERATING -> PRESENT 41 * PRESENT -> NOT_AVAILABLE 42 * NOT_AVAILABLE -> PRESENT 43 * 44 * A state will never immediately transition back to itself. 45 */ 46 enum Status { 47 // Device physically unplugged 48 STATUS_NOT_PRESENT = CAMERA_DEVICE_STATUS_NOT_PRESENT, 49 // Device physically has been plugged in 50 // and the camera can be used exlusively 51 STATUS_PRESENT = CAMERA_DEVICE_STATUS_PRESENT, 52 // Device physically has been plugged in 53 // but it will not be connect-able until enumeration is complete 54 STATUS_ENUMERATING = CAMERA_DEVICE_STATUS_ENUMERATING, 55 56 // Camera can be used exclusively 57 STATUS_AVAILABLE = STATUS_PRESENT, // deprecated, will be removed 58 59 // Camera is in use by another app and cannot be used exclusively 60 STATUS_NOT_AVAILABLE = 0x80000000, 61 62 // Use to initialize variables only 63 STATUS_UNKNOWN = 0xFFFFFFFF, 64 }; 65 66 DECLARE_META_INTERFACE(CameraServiceListener); 67 68 virtual void onStatusChanged(Status status, int32_t cameraId) = 0; 69 }; 70 71 // ---------------------------------------------------------------------------- 72 73 class BnCameraServiceListener : public BnInterface<ICameraServiceListener> 74 { 75 public: 76 virtual status_t onTransact( uint32_t code, 77 const Parcel& data, 78 Parcel* reply, 79 uint32_t flags = 0); 80 }; 81 82 }; // namespace android 83 84 #endif 85
