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      1 /* Copyright (c) 2015, The Linux Foundataion. 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 #include <hardware/camera_common.h>
     34 
     35 extern "C" {
     36 #include <mm_camera_interface.h>
     37 }
     38 
     39 namespace qcamera {
     40 
     41 #define QCAMERA_TORCH_CURRENT_VALUE 200
     42 
     43 class QCameraFlash {
     44 public:
     45     static QCameraFlash& getInstance();
     46 
     47     int32_t registerCallbacks(const camera_module_callbacks_t* callbacks);
     48     int32_t initFlash(const int camera_id);
     49     int32_t setFlashMode(const int camera_id, const bool on);
     50     int32_t deinitFlash(const int camera_id);
     51     int32_t reserveFlashForCamera(const int camera_id);
     52     int32_t releaseFlashFromCamera(const int camera_id);
     53 
     54 private:
     55     QCameraFlash();
     56     virtual ~QCameraFlash();
     57     QCameraFlash(const QCameraFlash&);
     58     QCameraFlash& operator=(const QCameraFlash&);
     59 
     60     const camera_module_callbacks_t *m_callbacks;
     61     int32_t m_flashFds[MM_CAMERA_MAX_NUM_SENSORS];
     62     bool m_flashOn[MM_CAMERA_MAX_NUM_SENSORS];
     63     bool m_cameraOpen[MM_CAMERA_MAX_NUM_SENSORS];
     64 };
     65 
     66 }; // namespace qcamera
     67 
     68 #endif /* __QCAMERA_FLASH_H__ */
     69