Shalaj Jain | 273b3e0 | 2012-06-22 19:08:03 -0700 | [diff] [blame^] | 1 | /*--------------------------------------------------------------------------
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| 2 | Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
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| 3 |
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| 4 | Redistribution and use in source and binary forms, with or without
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| 5 | modification, are permitted provided that the following conditions are met:
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| 6 | * Redistributions of source code must retain the above copyright
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| 7 | notice, this list of conditions and the following disclaimer.
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| 8 | * Redistributions in binary form must reproduce the above copyright
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| 9 | notice, this list of conditions and the following disclaimer in the
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| 10 | documentation and/or other materials provided with the distribution.
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| 11 | * Neither the name of Code Aurora nor
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| 12 | the names of its contributors may be used to endorse or promote
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| 13 | products derived from this software without specific prior written
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| 14 | permission.
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| 15 |
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| 16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| 17 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 18 | IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 19 | NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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| 20 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 21 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| 22 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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| 23 | OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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| 24 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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| 25 | OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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| 26 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | --------------------------------------------------------------------------*/
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| 28 | #ifndef QUEUE_H
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| 29 | #define QUEUE_H
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| 30 |
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| 31 | #include<pthread.h>
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| 32 | #include <semaphore.h>
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| 33 | #include <stdio.h>
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| 34 | #include <string.h>
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| 35 |
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| 36 | /* Message Queue structure */
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| 37 | struct video_msgq
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| 38 | {
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| 39 | /* Command to be executed */
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| 40 | unsigned int cmd;
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| 41 |
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| 42 | unsigned int status;
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| 43 |
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| 44 | /* Client-specific data */
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| 45 | void *clientdata;
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| 46 | };
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| 47 |
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| 48 |
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| 49 | /* Thread & Message Queue information */
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| 50 | struct video_queue_context
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| 51 | {
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| 52 | /* Message Queue related members */
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| 53 | pthread_mutex_t mutex;
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| 54 | sem_t sem_message;
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| 55 | int commandq_size;
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| 56 | int dataq_size;
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| 57 | struct video_msgq *ptr_dataq;
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| 58 | struct video_msgq *ptr_cmdq;
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| 59 | int write_dataq ;
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| 60 | int read_dataq;
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| 61 | int write_comq ;
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| 62 | int read_comq ;
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| 63 |
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| 64 | };
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| 65 |
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| 66 | int check_if_queue_empty ( unsigned int queuetocheck,void* queuecontext );
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| 67 |
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| 68 | struct video_msgq * queue_get_cmd ( void* queuecontext );
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| 69 |
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| 70 |
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| 71 |
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| 72 | int queue_post_cmdq ( void *queuecontext,
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| 73 | struct video_msgq *post_msg
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| 74 | );
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| 75 |
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| 76 | int queue_post_dataq ( void *queuecontext,
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| 77 | struct video_msgq *post_msg
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| 78 | );
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| 79 |
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| 80 | #endif /* QUEUE_H */
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