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 /* 18 * Contains implementation of a class EmulatedBaseCamera that encapsulates 19 * functionality common to all emulated camera device versions ("fake", 20 * "webcam", "video file", "cam2.0" etc.). Instances of this class (for each 21 * emulated camera) are created during the construction of the 22 * EmulatedCameraFactory instance. This class serves as an entry point for all 23 * camera API calls that are common across all versions of the 24 * camera_device_t/camera_module_t structures. 25 */ 26 27 #define LOG_NDEBUG 0 28 #define LOG_TAG "EmulatedCamera_BaseCamera" 29 #include <log/log.h> 30 31 #include "EmulatedBaseCamera.h" 32 33 namespace android { 34 35 EmulatedBaseCamera::EmulatedBaseCamera(int cameraId, uint32_t cameraVersion, 36 struct hw_device_t* device, 37 struct hw_module_t* module) 38 : mCameraInfo(NULL), 39 mCameraID(cameraId), 40 mCameraDeviceVersion(cameraVersion) { 41 /* 42 * Initialize camera_device descriptor for this object. 43 */ 44 45 /* Common header */ 46 device->tag = HARDWARE_DEVICE_TAG; 47 device->version = cameraVersion; 48 device->module = module; 49 device->close = NULL; // Must be filled in by child implementation 50 } 51 52 EmulatedBaseCamera::~EmulatedBaseCamera() {} 53 54 status_t EmulatedBaseCamera::getCameraInfo(struct camera_info* info) { 55 ALOGV("%s", __FUNCTION__); 56 57 info->device_version = mCameraDeviceVersion; 58 #if VSOC_PLATFORM_SDK_BEFORE(O) 59 // static_camera_characteristics should be initialized if and only if two 60 // conditions hold: 61 // CAMERA_MODULE_API_VERSION_2_0 or higher 62 // CAMERA_DEVICE_API_VERSION_2_0 or higher 63 // See android/hardware/libhardware/include/hardware/camera_common.h 64 // 65 // The CAMERA_MODULE_API_VERSION is above 2 on all of the supported 66 // branches. 67 // 68 // The CVD supports both CAMERA_DEVICE_API_VERSION_1_0 and 69 // CAMERA_DEVICE_API_VERSION_3_0. 70 // 71 // By the spec, the framework should not look at this field on 72 // CAMERA_DEVICE_API_VERSION_1_0. However, the framework 73 // referenced them unconditionally in the M, N, and N-MR1 branches. 74 // See b/67841929 for evidence. 75 // 76 // We have to support those branches, so make initialization uconditional. 77 // However, keep the 0xcafef00d fake initiziation on O and later to ensure 78 // that we'll catch future framework changes that violate the spec. 79 info->static_camera_characteristics = mCameraInfo; 80 #else 81 if (mCameraDeviceVersion >= HARDWARE_DEVICE_API_VERSION(2, 0)) { 82 info->static_camera_characteristics = mCameraInfo; 83 } else { 84 info->static_camera_characteristics = (camera_metadata_t*)0xcafef00d; 85 } 86 #endif 87 88 return NO_ERROR; 89 } 90 91 status_t EmulatedBaseCamera::plugCamera() { 92 ALOGE("%s: not supported", __FUNCTION__); 93 return INVALID_OPERATION; 94 } 95 96 status_t EmulatedBaseCamera::unplugCamera() { 97 ALOGE("%s: not supported", __FUNCTION__); 98 return INVALID_OPERATION; 99 } 100 101 #if VSOC_PLATFORM_SDK_AFTER(J_MR2) 102 camera_device_status_t EmulatedBaseCamera::getHotplugStatus() { 103 return CAMERA_DEVICE_STATUS_PRESENT; 104 } 105 #endif 106 107 status_t EmulatedBaseCamera::setTorchMode(bool /* enabled */) { 108 ALOGE("%s: not supported", __FUNCTION__); 109 return INVALID_OPERATION; 110 } 111 112 } /* namespace android */ 113
