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1 /* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
2  *
3  * Redistribution and use in source and binary forms, with or without
4  * modification, are permitted provided that the following conditions are
5  * met:
6  *     * Redistributions of source code must retain the above copyright
7  *       notice, this list of conditions and the following disclaimer.
8  *     * Redistributions in binary form must reproduce the above
9  *       copyright notice, this list of conditions and the following
10  *       disclaimer in the documentation and/or other materials provided
11  *       with the distribution.
12  *     * Neither the name of The Linux Foundation nor the names of its
13  *       contributors may be used to endorse or promote products derived
14  *       from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  */
29 
30 #ifndef __QCAMERA_FLASH_H__
31 #define __QCAMERA_FLASH_H__
32 
33 // Camera dependencies
34 #include "hardware/camera_common.h"
35 
36 extern "C" {
37 #include "mm_camera_interface.h"
38 }
39 
40 namespace qcamera {
41 
42 #define QCAMERA_TORCH_CURRENT_VALUE 200
43 
44 class QCameraFlash {
45 public:
46     static QCameraFlash& getInstance();
47 
48     int32_t registerCallbacks(const camera_module_callbacks_t* callbacks);
49     int32_t initFlash(const int camera_id);
50     int32_t setFlashMode(const int camera_id, const bool on);
51     int32_t deinitFlash(const int camera_id);
52     int32_t reserveFlashForCamera(const int camera_id);
53     int32_t releaseFlashFromCamera(const int camera_id);
54 
55 private:
56     QCameraFlash();
57     virtual ~QCameraFlash();
58     QCameraFlash(const QCameraFlash&);
59     QCameraFlash& operator=(const QCameraFlash&);
60 
61     const camera_module_callbacks_t *m_callbacks;
62     int32_t m_flashFds[MM_CAMERA_MAX_NUM_SENSORS];
63     bool m_flashOn[MM_CAMERA_MAX_NUM_SENSORS];
64     bool m_cameraOpen[MM_CAMERA_MAX_NUM_SENSORS];
65 };
66 
67 }; // namespace qcamera
68 
69 #endif /* __QCAMERA_FLASH_H__ */
70