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openjpeg/applications/jpip/opj_server/opj_server.c

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/*
* $Id: opj_server.c 53 2011-05-09 16:55:39Z 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.
*/
/*! \file
* \brief opj_server is a JPIP server program, which supports HTTP connection, JPT-stream, session, channels, and cache model managements.
*
* \section req Requirements
* FastCGI development kit (http://www.fastcgi.com).
*
* \section impinst Implementing instructions
* Launch opj_server from the server terminal:\n
* % spawn-fcgi -f ./opj_server -p 3000 -n
*
* Note: JP2 files are stored in the working directory of opj_server\n
* Check README for the JP2 Encoding\n
*
* We tested this software with a virtual server running on the same Linux machine as the clients.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "query_parser.h"
#include "channel_manager.h"
#include "session_manager.h"
#include "target_manager.h"
#include "imgreg_manager.h"
#include "msgqueue_manager.h"
#ifdef SERVER
#include "fcgi_stdio.h"
#define logstream FCGI_stdout
#else
#define FCGI_stdout stdout
#define FCGI_stderr stderr
#define logstream stderr
#endif //SERVER
/**
* parse JPIP request
*
* @param[in] query_param structured query
* @param[in] sessionlist session list pointer
* @param[in,out] msgqueue address of the message queue pointer
* @return if succeeded (true) or failed (false)
*/
bool parse_JPIPrequest( query_param_t query_param,
sessionlist_param_t *sessionlist,
msgqueue_param_t **msgqueue);
/**
* REQUEST: channel association
* this must be processed before any process
*
* @param[in] query_param structured query
* @param[in] sessionlist session list pointer
* @param[out] cursession address of the associated session pointer
* @param[out] curchannel address of the associated channel pointer
* @return if succeeded (true) or failed (false)
*/
bool associate_channel( query_param_t query_param,
sessionlist_param_t *sessionlist,
session_param_t **cursession,
channel_param_t **curchannel);
/**
* REQUEST: new channel (cnew) assignment
*
* @param[in] query_param structured query
* @param[in] sessionlist session list pointer
* @param[in,out] cursession address of the associated/opened session pointer
* @param[in,out] curchannel address of the associated/opened channel pointer
* @return if succeeded (true) or failed (false)
*/
bool open_channel( query_param_t query_param,
sessionlist_param_t *sessionlist,
session_param_t **cursession,
channel_param_t **curchannel);
/**
* REQUEST: channel close (cclose)
*
* @param[in] query_param structured query
* @param[in] sessionlist session list pointer
* @param[in,out] cursession address of the session pointer of deleting channel
* @param[in,out] curchannel address of the deleting channel pointer
* @return if succeeded (true) or failed (false)
*/
bool close_channel( query_param_t query_param,
sessionlist_param_t *sessionlist,
session_param_t **cursession,
channel_param_t **curchannel);
/**
* REQUEST: view-window (fsiz)
*
* @param[in] query_param structured query
* @param[in,out] cursession associated session pointer
* @param[in,out] curchannel associated channel pointer
* @param[in,out] msgqueue address of the message queue pointer
* @return if succeeded (true) or failed (false)
*/
bool gene_JPTstream( query_param_t query_param,
session_param_t *cursession,
channel_param_t *curchannel,
msgqueue_param_t **msgqueue);
int main(void)
{
sessionlist_param_t *sessionlist;
bool parse_status;
sessionlist = gene_sessionlist();
#ifdef SERVER
char *query_string;
while(FCGI_Accept() >= 0)
#else
char query_string[128];
while((fgets( query_string, 128, stdin))[0] != '\n' )
#endif
{
#ifdef SERVER
query_string = getenv("QUERY_STRING");
#endif //SERVER
fprintf( FCGI_stdout, "Content-type: image/jpt-stream\r\n");
query_param_t query_param;
msgqueue_param_t *msgqueue;
parse_query( query_string, &query_param);
#ifndef SERVER
print_queryparam( query_param);
#endif
msgqueue = NULL;
parse_status = parse_JPIPrequest( query_param, sessionlist, &msgqueue);
fprintf( FCGI_stdout, "\r\n");
#ifndef SERVER
// if( parse_status)
// print_allsession( sessionlist);
print_msgqueue( msgqueue);
#endif
emit_stream_from_msgqueue( msgqueue);
delete_msgqueue( &msgqueue);
}
delete_sessionlist( &sessionlist);
return 0;
}
bool parse_JPIPrequest( query_param_t query_param,
sessionlist_param_t *sessionlist,
msgqueue_param_t **msgqueue)
{
session_param_t *cursession = NULL;
channel_param_t *curchannel = NULL;
if( query_param.cid[0] != '\0')
if( !associate_channel( query_param, sessionlist, &cursession, &curchannel))
return false;
if( query_param.cnew){
if( !open_channel( query_param, sessionlist, &cursession, &curchannel))
return false;
}
if( query_param.cclose[0][0] != '\0')
if( !close_channel( query_param, sessionlist, &cursession, &curchannel))
return false;
if( (query_param.fx > 0 && query_param.fy > 0) || query_param.box_type[0][0] != 0)
if( !gene_JPTstream( query_param, cursession, curchannel, msgqueue))
return false;
return true;
}
bool associate_channel( query_param_t query_param,
sessionlist_param_t *sessionlist,
session_param_t **cursession,
channel_param_t **curchannel)
{
if( search_session_and_channel( query_param.cid, sessionlist, cursession, curchannel)){
if( !query_param.cnew)
set_channel_variable_param( query_param, *curchannel);
}
else{
fprintf( FCGI_stderr, "Error: process canceled\n");
return false;
}
return true;
}
bool open_channel( query_param_t query_param,
sessionlist_param_t *sessionlist,
session_param_t **cursession,
channel_param_t **curchannel)
{
target_param_t *target=NULL;
if( query_param.target[0] !='\0'){ // target query specified
if( *cursession){
if( !( target = search_target( query_param.target, (*cursession)->targetlist))){
if((target = gene_target( query_param.target)))
insert_target_into_session( *cursession, target);
else
return false;
}
}
else{
if((target = gene_target( query_param.target))){
// new session
*cursession = gene_session( sessionlist);
insert_target_into_session( *cursession, target);
}
else
return false;
}
}
else{
if( *cursession)
target = (*curchannel)->target;
}
*curchannel = gene_channel( query_param, target, (*cursession)->channellist);
if( *curchannel == NULL)
return false;
return true;
}
bool close_channel( query_param_t query_param,
sessionlist_param_t *sessionlist,
session_param_t **cursession,
channel_param_t **curchannel)
{
if( query_param.cclose[0][0] =='*'){
#ifndef SERVER
fprintf( logstream, "local log: close all\n");
#endif
// all channels associatd with the session will be closed
if( !delete_session( cursession, sessionlist))
return false;
}
else{
// check if all entry belonging to the same session
int i=0;
while( query_param.cclose[i][0] !='\0'){
// In case of the first entry of close cid
if( *cursession == NULL){
if( !search_session_and_channel( query_param.cclose[i], sessionlist, cursession, curchannel))
return false;
}
else // second or more entry of close cid
if( !(*curchannel=search_channel( query_param.cclose[i], (*cursession)->channellist))){
fprintf( FCGI_stdout, "Reason: Cclose id %s is from another session\r\n", query_param.cclose[i]);
return false;
}
i++;
}
// delete channels
i=0;
while( query_param.cclose[i][0] !='\0'){
*curchannel = search_channel( query_param.cclose[i], (*cursession)->channellist);
delete_channel( curchannel, (*cursession)->channellist);
i++;
}
if( (*cursession)->channellist->first == NULL || (*cursession)->channellist->last == NULL)
// In case of empty session
delete_session( cursession, sessionlist);
}
return true;
}
/**
* enqueue tiles into the message queue
*
* @param[in] query_param structured query
* @param[in] codeidx pointer to index parameters
* @param[in,out] msgqueue message queue pointer
*/
void enqueue_tiles( query_param_t query_param, index_param_t *codeidx, msgqueue_param_t *msgqueue);
/**
* enqueue metadata bins into the message queue
*
* @param[in] query_param structured query
* @param[in] metadatalist pointer to metadata bin list
* @param[in,out] msgqueue message queue pointer
*/
void enqueue_metabins( query_param_t query_param, metadatalist_param_t *metadatalist, msgqueue_param_t *msgqueue);
bool gene_JPTstream( query_param_t query_param,
session_param_t *cursession,
channel_param_t *curchannel,
msgqueue_param_t **msgqueue)
{
target_param_t *target;
index_param_t *codeidx;
if( !cursession || !curchannel){ // stateless
if((target = gene_target( query_param.target)))
*msgqueue = gene_msgqueue( true, target);
else
return false;
}
else{ // session
target = curchannel->target;
*msgqueue = gene_msgqueue( false, target);
}
codeidx = target->codeidx;
//meta
if( query_param.box_type[0][0] != 0)
enqueue_metabins( query_param, codeidx->metadatalist, *msgqueue);
// image code
if( query_param.fx > 0 && query_param.fy > 0){
if( !codeidx->mhead_model)
enqueue_mainheader( *msgqueue);
enqueue_tiles( query_param, codeidx, *msgqueue);
}
return true;
}
void enqueue_tiles( query_param_t query_param, index_param_t *codeidx, msgqueue_param_t *msgqueue)
{
imgreg_param_t imgreg;
range_param_t tile_Xrange, tile_Yrange;
int u, v, tile_id;
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( u=0, tile_id=0; u<codeidx->YTnum; u++){
tile_Yrange = get_tile_Yrange( *codeidx, u, imgreg.level);
for( 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)
{
int i;
for( 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);
}
}
}
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