431 lines
13 KiB
C
431 lines
13 KiB
C
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/*
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* $Id: opj_server.c 46 2011-02-17 14:50:55Z kaori $
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*
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* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2011, Professor Benoit Macq
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* Copyright (c) 2010-2011, Kaori Hagihara
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* All rights reserved.
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*
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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
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* are met:
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* 1. 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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* 2. 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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*
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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 AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*! \file
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* \brief opj_server is a JPIP server program, which supports HTTP connection, JPT-stream, session, channels, and cache model managements.
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*
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* \section req Requirements
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* FastCGI development kit (http://www.fastcgi.com).
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*
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* \section impinst Implementing instructions
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* Launch opj_server from the server terminal:\n
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* % spawn-fcgi -f ./opj_server -p 3000 -n
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*
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* Note: JP2 files are stored in the working directory of opj_server\n
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* Check README for the JP2 Encoding\n
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*
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* We tested this software with a virtual server running on the same Linux machine as the clients.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "query_parser.h"
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#include "channel_manager.h"
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#include "session_manager.h"
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#include "target_manager.h"
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#include "imgreg_manager.h"
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#include "msgqueue_manager.h"
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#ifdef SERVER
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#include "fcgi_stdio.h"
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#define logstream FCGI_stdout
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#else
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#define FCGI_stdout stdout
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#define FCGI_stderr stderr
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#define logstream stderr
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#endif //SERVER
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/**
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* parse JPIP request
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*
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* @param[in] query_param structured query
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* @param[in] sessionlist session list pointer
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* @param[in,out] msgqueue address of the message queue pointer
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* @return if succeeded (true) or failed (false)
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*/
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bool parse_JPIPrequest( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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msgqueue_param_t **msgqueue);
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/**
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* REQUEST: channel association
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* this must be processed before any process
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*
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* @param[in] query_param structured query
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* @param[in] sessionlist session list pointer
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* @param[out] cursession address of the associated session pointer
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* @param[out] curchannel address of the associated channel pointer
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* @return if succeeded (true) or failed (false)
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*/
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bool associate_channel( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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session_param_t **cursession,
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channel_param_t **curchannel);
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/**
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* REQUEST: new channel (cnew) assignment
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*
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* @param[in] query_param structured query
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* @param[in] sessionlist session list pointer
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* @param[in,out] cursession address of the associated/opened session pointer
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* @param[in,out] curchannel address of the associated/opened channel pointer
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* @return if succeeded (true) or failed (false)
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*/
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bool open_channel( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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session_param_t **cursession,
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channel_param_t **curchannel);
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/**
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* REQUEST: channel close (cclose)
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*
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* @param[in] query_param structured query
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* @param[in] sessionlist session list pointer
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* @param[in,out] cursession address of the session pointer of deleting channel
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* @param[in,out] curchannel address of the deleting channel pointer
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* @return if succeeded (true) or failed (false)
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*/
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bool close_channel( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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session_param_t **cursession,
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channel_param_t **curchannel);
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/**
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* REQUEST: view-window (fsiz)
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*
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* @param[in] query_param structured query
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* @param[in,out] cursession associated session pointer
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* @param[in,out] curchannel associated channel pointer
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* @param[in,out] msgqueue address of the message queue pointer
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* @return if succeeded (true) or failed (false)
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*/
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bool gene_JPTstream( query_param_t query_param,
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session_param_t *cursession,
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channel_param_t *curchannel,
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msgqueue_param_t **msgqueue);
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int main(void)
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{
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sessionlist_param_t *sessionlist;
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bool parse_status;
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sessionlist = gene_sessionlist();
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#ifdef SERVER
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char *query_string;
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while(FCGI_Accept() >= 0)
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#else
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char query_string[128];
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while((fgets( query_string, 128, stdin))[0] != '\n' )
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#endif
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{
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#ifdef SERVER
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query_string = getenv("QUERY_STRING");
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#endif //SERVER
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fprintf( FCGI_stdout, "Content-type: image/jpt-stream\r\n");
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query_param_t query_param;
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msgqueue_param_t *msgqueue;
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parse_query( query_string, &query_param);
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#ifndef SERVER
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print_queryparam( query_param);
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#endif
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msgqueue = NULL;
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parse_status = parse_JPIPrequest( query_param, sessionlist, &msgqueue);
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fprintf( FCGI_stdout, "\r\n");
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#ifndef SERVER
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// if( parse_status)
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// print_allsession( sessionlist);
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print_msgqueue( msgqueue);
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#endif
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emit_stream_from_msgqueue( msgqueue);
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delete_msgqueue( &msgqueue);
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}
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delete_sessionlist( &sessionlist);
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return 0;
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}
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bool parse_JPIPrequest( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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msgqueue_param_t **msgqueue)
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{
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session_param_t *cursession = NULL;
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channel_param_t *curchannel = NULL;
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if( query_param.cid[0] != '\0')
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if( !associate_channel( query_param, sessionlist, &cursession, &curchannel))
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return false;
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if( query_param.cnew){
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if( !open_channel( query_param, sessionlist, &cursession, &curchannel))
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return false;
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}
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if( query_param.cclose[0][0] != '\0')
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if( !close_channel( query_param, sessionlist, &cursession, &curchannel))
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return false;
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if( (query_param.fx > 0 && query_param.fx > 0) || query_param.box_type[0][0] != 0)
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if( !gene_JPTstream( query_param, cursession, curchannel, msgqueue))
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return false;
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return true;
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}
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bool associate_channel( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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session_param_t **cursession,
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channel_param_t **curchannel)
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{
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if( search_session_and_channel( query_param.cid, sessionlist, cursession, curchannel)){
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if( !query_param.cnew)
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set_channel_variable_param( query_param, *curchannel);
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}
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else{
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fprintf( FCGI_stderr, "Error: process canceled\n");
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return false;
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}
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return true;
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}
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bool open_channel( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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session_param_t **cursession,
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channel_param_t **curchannel)
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{
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target_param_t *target=NULL;
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if( query_param.target[0] !='\0'){ // target query specified
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if( *cursession){
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if( !( target = search_target( query_param.target, (*cursession)->targetlist))){
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if((target = gene_target( query_param.target)))
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insert_target_into_session( *cursession, target);
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else
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return false;
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}
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}
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else{
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if((target = gene_target( query_param.target))){
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// new session
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*cursession = gene_session( sessionlist);
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insert_target_into_session( *cursession, target);
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}
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else
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return false;
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}
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}
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else{
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if( *cursession)
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target = (*curchannel)->target;
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}
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*curchannel = gene_channel( query_param, target, (*cursession)->channellist);
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if( *curchannel == NULL)
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return false;
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return true;
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}
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bool close_channel( query_param_t query_param,
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sessionlist_param_t *sessionlist,
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session_param_t **cursession,
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channel_param_t **curchannel)
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{
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if( query_param.cclose[0][0] =='*'){
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#ifndef SERVER
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fprintf( logstream, "local log: close all\n");
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#endif
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// all channels associatd with the session will be closed
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if( !delete_session( cursession, sessionlist))
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return false;
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}
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else{
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// check if all entry belonging to the same session
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int i=0;
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while( query_param.cclose[i][0] !='\0'){
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// In case of the first entry of close cid
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if( *cursession == NULL){
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if( !search_session_and_channel( query_param.cclose[i], sessionlist, cursession, curchannel))
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return false;
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}
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else // second or more entry of close cid
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if( !(*curchannel=search_channel( query_param.cclose[i], (*cursession)->channellist))){
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fprintf( FCGI_stdout, "Reason: Cclose id %s is from another session\r\n", query_param.cclose[i]);
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return false;
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}
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i++;
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}
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// delete channels
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i=0;
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while( query_param.cclose[i][0] !='\0'){
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*curchannel = search_channel( query_param.cclose[i], (*cursession)->channellist);
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delete_channel( curchannel, (*cursession)->channellist);
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i++;
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}
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if( (*cursession)->channellist->first == NULL || (*cursession)->channellist->last == NULL)
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// In case of empty session
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delete_session( cursession, sessionlist);
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}
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return true;
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}
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/**
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* enqueue tiles into the message queue
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*
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* @param[in] query_param structured query
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* @param[in] codeidx pointer to index parameters
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* @param[in,out] msgqueue message queue pointer
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*/
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void enqueue_tiles( query_param_t query_param, index_param_t *codeidx, msgqueue_param_t *msgqueue);
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/**
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* enqueue metadata bins into the message queue
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*
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* @param[in] query_param structured query
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* @param[in] metadatalist pointer to metadata bin list
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* @param[in,out] msgqueue message queue pointer
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*/
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void enqueue_metabins( query_param_t query_param, metadatalist_param_t *metadatalist, msgqueue_param_t *msgqueue);
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bool gene_JPTstream( query_param_t query_param,
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session_param_t *cursession,
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channel_param_t *curchannel,
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msgqueue_param_t **msgqueue)
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{
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target_param_t *target;
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index_param_t *codeidx;
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if( !cursession || !curchannel){ // stateless
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if((target = gene_target( query_param.target)))
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*msgqueue = gene_msgqueue( true, target);
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else
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return false;
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}
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else{ // session
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target = curchannel->target;
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*msgqueue = gene_msgqueue( false, target);
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}
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codeidx = target->codeidx;
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//meta
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if( query_param.box_type[0][0] != 0)
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enqueue_metabins( query_param, codeidx->metadatalist, *msgqueue);
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// image code
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if( query_param.fx > 0 && query_param.fx > 0){
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if( !codeidx->mhead_model)
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enqueue_mainheader( *msgqueue);
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enqueue_tiles( query_param, codeidx, *msgqueue);
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}
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return true;
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}
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void enqueue_tiles( query_param_t query_param, index_param_t *codeidx, msgqueue_param_t *msgqueue)
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{
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imgreg_param_t imgreg;
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range_param_t tile_Xrange, tile_Yrange;
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imgreg = map_viewin2imgreg( query_param.fx, query_param.fy,
|
||
|
|
query_param.rx, query_param.ry, query_param.rw, query_param.rh,
|
||
|
|
codeidx->XOsiz, codeidx->YOsiz, codeidx->Xsiz, codeidx->Ysiz,
|
||
|
|
get_nmax( codeidx->tilepart));
|
||
|
|
|
||
|
|
|
||
|
|
for( int u=0, tile_id=0; u<codeidx->YTnum; u++){
|
||
|
|
tile_Yrange = get_tile_Yrange( *codeidx, u, imgreg.level);
|
||
|
|
|
||
|
|
for( int v=0; v<codeidx->XTnum; v++, tile_id++){
|
||
|
|
tile_Xrange = get_tile_Xrange( *codeidx, v, imgreg.level);
|
||
|
|
|
||
|
|
if( tile_Xrange.minvalue < tile_Xrange.maxvalue && tile_Yrange.minvalue < tile_Yrange.maxvalue){
|
||
|
|
if( tile_Xrange.maxvalue <= imgreg.xosiz + imgreg.ox ||
|
||
|
|
tile_Xrange.minvalue >= imgreg.xosiz + imgreg.ox + imgreg.sx ||
|
||
|
|
tile_Yrange.maxvalue <= imgreg.yosiz + imgreg.oy ||
|
||
|
|
tile_Yrange.minvalue >= imgreg.yosiz + imgreg.oy + imgreg.sy) {
|
||
|
|
//printf("Tile completely excluded from view-window %d\n", tile_id);
|
||
|
|
// Tile completely excluded from view-window
|
||
|
|
}
|
||
|
|
else if( tile_Xrange.minvalue >= imgreg.xosiz + imgreg.ox &&
|
||
|
|
tile_Xrange.maxvalue <= imgreg.xosiz + imgreg.ox + imgreg.sx &&
|
||
|
|
tile_Yrange.minvalue >= imgreg.yosiz + imgreg.oy &&
|
||
|
|
tile_Yrange.maxvalue <= imgreg.yosiz + imgreg.oy + imgreg.sy) {
|
||
|
|
// Tile completely contained within view-window
|
||
|
|
// high priority
|
||
|
|
//printf("Tile completely contained within view-window %d\n", tile_id);
|
||
|
|
enqueue_tile( tile_id, imgreg.level, msgqueue);
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
// Tile partially overlaps view-window
|
||
|
|
// low priority
|
||
|
|
//printf("Tile partially overlaps view-window %d\n", tile_id);
|
||
|
|
enqueue_tile( tile_id, imgreg.level, msgqueue);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void enqueue_metabins( query_param_t query_param, metadatalist_param_t *metadatalist, msgqueue_param_t *msgqueue)
|
||
|
|
{
|
||
|
|
for( int i=0; query_param.box_type[i][0]!=0 && i<MAX_NUMOFBOX; i++){
|
||
|
|
if( query_param.box_type[i][0] == '*'){
|
||
|
|
// not implemented
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
int idx = search_metadataidx( query_param.box_type[i], metadatalist);
|
||
|
|
|
||
|
|
if( idx != -1)
|
||
|
|
enqueue_metadata( idx, msgqueue);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|