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Alex Ray7ee0b7a2012-11-06 00:12:49 -08001/*
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>
Alex Raya0ed4be2013-02-25 15:02:16 -080021#include <hardware/hardware.h>
22#include <hardware/camera3.h>
Alex Ray7ee0b7a2012-11-06 00:12:49 -080023
24namespace 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.
Alex Ray7ee0b7a2012-11-06 00:12:49 -080029class 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.
Alex Raya0ed4be2013-02-25 15:02:16 -080033 Camera(int id);
Alex Ray7ee0b7a2012-11-06 00:12:49 -080034 ~Camera();
Alex Raya48dd3f2012-12-19 12:21:38 -080035
36 // Common Camera Device Operations (see <hardware/camera_common.h>)
Alex Raya0ed4be2013-02-25 15:02:16 -080037 int open(const hw_module_t *module, hw_device_t **device);
Alex Raya48dd3f2012-12-19 12:21:38 -080038 int close();
Alex Raya0ed4be2013-02-25 15:02:16 -080039
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;
Alex Raya48dd3f2012-12-19 12:21:38 -080051
Alex Ray7ee0b7a2012-11-06 00:12:49 -080052 private:
Alex Ray7ee0b7a2012-11-06 00:12:49 -080053 // Identifier used by framework to distinguish cameras
54 int mId;
Alex Raya0ed4be2013-02-25 15:02:16 -080055 // Busy flag indicates camera is in use
Alex Ray7ee0b7a2012-11-06 00:12:49 -080056 bool mBusy;
Alex Raya0ed4be2013-02-25 15:02:16 -080057 // 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;
Alex Ray7ee0b7a2012-11-06 00:12:49 -080061 // Lock protecting the Camera object for modifications
62 pthread_mutex_t mMutex;
63};
64} // namespace default_camera_hal
65
66#endif // CAMERA_H_