QCameraQueue.h revision 6c6d887243f26c81543d33c2f8aa169862324b40 
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
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8 *     * Redistributions in binary form must reproduce the above
9 *       copyright notice, this list of conditions and the following
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14 *       from this software without specific prior written permission.
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16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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28 */
29
30#ifndef __QCAMERA_QUEUE_H__
31#define __QCAMERA_QUEUE_H__
32
33#include <pthread.h>
34#include "cam_list.h"
35
36namespace qcamera {
37
38typedef void (*release_data_fn)(void* data, void *user_data);
39typedef bool (*match_fn)(void *data, void *user_data);
40
41class QCameraQueue {
42public:
43    QCameraQueue();
44    QCameraQueue(release_data_fn data_rel_fn, void *user_data);
45    virtual ~QCameraQueue();
46    bool enqueue(void *data);
47    bool enqueueWithPriority(void *data);
48    void flush();
49    void flushNodes(match_fn match);
50    void* dequeue(bool bFromHead = true);
51    bool isEmpty();
52private:
53    typedef struct {
54        struct cam_list list;
55        void* data;
56    } camera_q_node;
57
58    camera_q_node m_head; // dummy head
59    int m_size;
60    pthread_mutex_t m_lock;
61    release_data_fn m_dataFn;
62    void * m_userData;
63};
64
65}; // namespace qcamera
66
67#endif /* __QCAMERA_QUEUE_H__ */
68