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 #ifndef CAMERA_H_ 18 #define CAMERA_H_ 19 20 #include <pthread.h> 21 #include <hardware/hardware.h> 22 #include <hardware/camera3.h> 23 24 namespace default_camera_hal { 25 // Camera represents a physical camera on a device. 26 // This is constructed when the HAL module is loaded, one per physical camera. 27 // It is opened by the framework, and must be closed before it can be opened 28 // again. 29 class Camera { 30 public: 31 // id is used to distinguish cameras. 0 <= id < NUM_CAMERAS. 32 // module is a handle to the HAL module, used when the device is opened. 33 Camera(int id); 34 ~Camera(); 35 36 // Common Camera Device Operations (see <hardware/camera_common.h>) 37 int open(const hw_module_t *module, hw_device_t **device); 38 int close(); 39 40 // Camera v3 Device Operations (see <hardware/camera3.h>) 41 int initialize(const camera3_callback_ops_t *callback_ops); 42 int configureStreams(camera3_stream_configuration_t *stream_list); 43 int registerStreamBuffers(const camera3_stream_buffer_set_t *buf_set); 44 const camera_metadata_t *constructDefaultRequestSettings(int type); 45 int processCaptureRequest(camera3_capture_request_t *request); 46 void getMetadataVendorTagOps(vendor_tag_query_ops_t *ops); 47 void dump(int fd); 48 49 // Camera device handle returned to framework for use 50 camera3_device_t mDevice; 51 52 private: 53 // Identifier used by framework to distinguish cameras 54 const int mId; 55 // Busy flag indicates camera is in use 56 bool mBusy; 57 // Camera device operations handle shared by all devices 58 const static camera3_device_ops_t sOps; 59 // Methods used to call back into the framework 60 const camera3_callback_ops_t *mCallbackOps; 61 // Lock protecting the Camera object for modifications 62 pthread_mutex_t mMutex; 63 }; 64 } // namespace default_camera_hal 65 66 #endif // CAMERA_H_ 67
