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78 lines
2.7 KiB
78 lines
2.7 KiB
/*-------------------------------------------------------------------------- |
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Copyright (c) 2010-2011, 2013, The Linux Foundation. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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* Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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* Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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* Neither the name of The Linux Foundation nor |
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the names of its contributors may be used to endorse or promote |
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products derived from this software without specific prior written |
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permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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--------------------------------------------------------------------------*/ |
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#ifndef QUEUE_H |
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#define QUEUE_H |
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#include<pthread.h> |
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#include <semaphore.h> |
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#include <stdio.h> |
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#include <string.h> |
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/* Message Queue structure */ |
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struct video_msgq { |
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/* Command to be executed */ |
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unsigned int cmd; |
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unsigned int status; |
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/* Client-specific data */ |
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void *clientdata; |
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}; |
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/* Thread & Message Queue information */ |
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struct video_queue_context { |
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/* Message Queue related members */ |
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pthread_mutex_t mutex; |
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sem_t sem_message; |
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int commandq_size; |
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int dataq_size; |
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struct video_msgq *ptr_dataq; |
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struct video_msgq *ptr_cmdq; |
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int write_dataq ; |
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int read_dataq; |
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int write_comq ; |
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int read_comq ; |
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}; |
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int check_if_queue_empty ( unsigned int queuetocheck,void* queuecontext ); |
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struct video_msgq * queue_get_cmd ( void* queuecontext ); |
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int queue_post_cmdq ( void *queuecontext, |
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struct video_msgq *post_msg |
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); |
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int queue_post_dataq ( void *queuecontext, |
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struct video_msgq *post_msg |
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); |
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#endif /* QUEUE_H */
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