openjpeg/applications/jpip/opj_server/channel_manager.h

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/*
* $Id: channel_manager.h 44 2011-02-15 12:32:29Z kaori $
*
* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2011, Professor Benoit Macq
* Copyright (c) 2010-2011, Kaori Hagihara
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CHANNEL_MANAGER_H_
# define CHANNEL_MANAGER_H_
#include <time.h>
#include "query_parser.h"
#include "cachemodel_manager.h"
//! Channel parameters
typedef struct channel_param{
cachemodel_param_t *cachemodel; //!< reference pointer to the cache model
char cid[MAX_LENOFCID]; //!< channel identifier
// - a record of the client's capabilities and preferences to the extent that the server queues requests
time_t start_tm; //!< starting time
struct channel_param *next; //!< pointer to the next channel
} channel_param_t;
//! Channel list parameters
typedef struct channellist_param{
channel_param_t *first; //!< first channel pointer of the list
channel_param_t *last; //!< last channel pointer of the list
} channellist_param_t;
/**
* generate a channel list
*
* @return pointer to the generated channel list
*/
channellist_param_t * gene_channellist();
/**
* generate a channel under the channel list
*
* @param[in] query_param query parameters
* @param[in] cachemodel reference cachemodel
* @param[in] channellist channel list pointer
* @return pointer to the generated channel
*/
channel_param_t * gene_channel( query_param_t query_param, cachemodel_param_t *cachemodel, channellist_param_t *channellist);
/**
* set channel variable parameters
*
* @param[in] query_param query parameters
* @param[in,out] channel pointer to the modifying channel
*/
void set_channel_variable_param( query_param_t query_param, channel_param_t *channel);
/**
* delete a channel
*
* @param[in] channel address of the deleting channel pointer
* @param[in,out] channellist channel list pointer
*/
void delete_channel( channel_param_t **channel, channellist_param_t *channellist);
/**
* delete channel list
*
* @param[in,out] channellist address of the channel list pointer
*/
void delete_channellist( channellist_param_t **channellist);
/**
* print all channel parameters
*
* @param[in] channellist channel list pointer
*/
void print_allchannel( channellist_param_t *channellist);
/**
* search a channel by channel ID
*
* @param[in] cid channel identifier
* @param[in] channellist channel list pointer
* @return found channel pointer
*/
channel_param_t * search_channel( char cid[], channellist_param_t *channellist);
#endif /* !CHANNEL_MANAGER_H_ */