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      1 /* Copyright (c) 2012, 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_CMD_THREAD_H__
     31 #define __QCAMERA_CMD_THREAD_H__
     32 
     33 #include <pthread.h>
     34 #include <cam_semaphore.h>
     35 
     36 #include "cam_types.h"
     37 #include "QCameraQueue.h"
     38 
     39 namespace qcamera {
     40 
     41 typedef enum
     42 {
     43     CAMERA_CMD_TYPE_NONE,
     44     CAMERA_CMD_TYPE_START_DATA_PROC,
     45     CAMERA_CMD_TYPE_STOP_DATA_PROC,
     46     CAMERA_CMD_TYPE_DO_NEXT_JOB,
     47     CAMERA_CMD_TYPE_EXIT,
     48     CAMERA_CMD_TYPE_MAX
     49 } camera_cmd_type_t;
     50 
     51 typedef struct {
     52     camera_cmd_type_t cmd;
     53 } camera_cmd_t;
     54 
     55 class QCameraCmdThread {
     56 public:
     57     QCameraCmdThread();
     58     ~QCameraCmdThread();
     59 
     60     int32_t launch(void *(*start_routine)(void *), void* user_data);
     61     int32_t setName(const char* name);
     62     int32_t exit();
     63     int32_t sendCmd(camera_cmd_type_t cmd, uint8_t sync_cmd, uint8_t priority);
     64     camera_cmd_type_t getCmd();
     65 
     66     QCameraQueue cmd_queue;      /* cmd queue */
     67     pthread_t cmd_pid;           /* cmd thread ID */
     68     cam_semaphore_t cmd_sem;               /* semaphore for cmd thread */
     69     cam_semaphore_t sync_sem;              /* semaphore for synchronized call signal */
     70 };
     71 
     72 }; // namespace qcamera
     73 
     74 #endif /* __QCAMERA_CMD_THREAD_H__ */
     75