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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
* Copyright (c) 2011, Lucian Corlaciu, GSoC
* 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 <math.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"
#ifndef QUIT_SIGNAL
#define QUIT_SIGNAL "quitJPIP"
#endif
#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] targetlist target 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,
targetlist_param_t *targetlist,
msgqueue_param_t **msgqueue);
int main(void)
{
sessionlist_param_t *sessionlist;
targetlist_param_t *targetlist;
bool parse_status;
sessionlist = gene_sessionlist();
targetlist = gene_targetlist();
#ifdef SERVER
char *query_string;
while(FCGI_Accept() >= 0)
#else
char query_string[128];
while( fgets( query_string, 128, stdin) && query_string[0]!='\n')
#endif
{
#ifdef SERVER
query_string = getenv("QUERY_STRING");
#endif //SERVER
if( strcmp( query_string, QUIT_SIGNAL) == 0)
break;
query_param_t query_param;
msgqueue_param_t *msgqueue;
parse_query( query_string, &query_param);
#ifndef SERVER
print_queryparam( query_param);
#endif
msgqueue = NULL;
if( !(parse_status = parse_JPIPrequest( query_param, sessionlist, targetlist, &msgqueue)))
fprintf( FCGI_stderr, "Error: JPIP request failed\n");
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);
}
fprintf( FCGI_stderr, "JPIP server terminated by a client request\n");
delete_sessionlist( &sessionlist);
delete_targetlist( &targetlist);
return 0;
}
/**
* REQUEST: target identification by target or tid request
*
* @param[in] query_param structured query
* @param[in] targetlist target list pointer
* @param[out] target address of target pointer
* @return if succeeded (true) or failed (false)
*/
bool identify_target( query_param_t query_param, targetlist_param_t *targetlist, target_param_t **target);
/**
* 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] target requested target 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,
target_param_t *target,
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] target requested target pointer
* @param[in,out] cursession associated session pointer
* @param[in,out] curchannel associated channel pointer
* @param[out] msgqueue address of the message queue pointer
* @return if succeeded (true) or failed (false)
*/
bool gene_JPIPstream( query_param_t query_param,
target_param_t *target,
session_param_t *cursession,
channel_param_t *curchannel,
msgqueue_param_t **msgqueue);
bool parse_JPIPrequest( query_param_t query_param,
sessionlist_param_t *sessionlist,
targetlist_param_t *targetlist,
msgqueue_param_t **msgqueue)
{
target_param_t *target = NULL;
session_param_t *cursession = NULL;
channel_param_t *curchannel = NULL;
if( query_param.target[0] != '\0' || query_param.tid[0] != '\0'){
if( !identify_target( query_param, targetlist, &target))
return false;
}
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, target, &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_JPIPstream( query_param, target, cursession, curchannel, msgqueue))
return false;
return true;
}
bool identify_target( query_param_t query_param, targetlist_param_t *targetlist, target_param_t **target)
{
if( query_param.tid[0] !='\0' && strcmp( query_param.tid, "0") != 0 ){
if( query_param.cid[0] != '\0'){
fprintf( FCGI_stdout, "Reason: Target can not be specified both through tid and cid\r\n");
fprintf( FCGI_stdout, "Status: 400\r\n");
return false;
}
if( ( *target = search_targetBytid( query_param.tid, targetlist)))
return true;
}
if( query_param.target[0] !='\0')
if( !( *target = search_target( query_param.target, targetlist)))
if(!( *target = gene_target( targetlist, query_param.target)))
return false;
if( *target){
fprintf( FCGI_stdout, "JPIP-tid: %s\r\n", (*target)->tid);
return true;
}
else{
fprintf( FCGI_stdout, "Reason: target not found\r\n");
fprintf( FCGI_stdout, "Status: 400\r\n");
return false;
}
}
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,
target_param_t *target,
session_param_t **cursession,
channel_param_t **curchannel)
{
cachemodel_param_t *cachemodel = NULL;
if( target){
if( !(*cursession))
*cursession = gene_session( sessionlist);
if( !( cachemodel = search_cachemodel( target, (*cursession)->cachemodellist)))
if( !(cachemodel = gene_cachemodel( (*cursession)->cachemodellist, target, query_param.return_type==JPPstream)))
return false;
}
else
if( *curchannel)
cachemodel = (*curchannel)->cachemodel;
*curchannel = gene_channel( query_param, cachemodel, (*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 or precincts into the message queue
*
* @param[in] query_param structured query
* @param[in] msgqueue message queue pointer
*/
void enqueue_imagedata( query_param_t query_param, 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_JPIPstream( query_param_t query_param,
target_param_t *target,
session_param_t *cursession,
channel_param_t *curchannel,
msgqueue_param_t **msgqueue)
{
index_param_t *codeidx;
cachemodel_param_t *cachemodel;
if( !cursession || !curchannel){ // stateless
if( !target)
return false;
if( !(cachemodel = gene_cachemodel( NULL, target, query_param.return_type==JPPstream)))
return false;
*msgqueue = gene_msgqueue( true, cachemodel);
}
else{ // session
cachemodel = curchannel->cachemodel;
target = cachemodel->target;
*msgqueue = gene_msgqueue( false, cachemodel);
}
codeidx = target->codeidx;
if( cachemodel->jppstream)
fprintf( FCGI_stdout, "Content-type: image/jpp-stream\r\n");
else
fprintf( FCGI_stdout, "Content-type: image/jpt-stream\r\n");
if( query_param.layers != -1){
if( query_param.layers > codeidx->COD.numOflayers){
fprintf( FCGI_stdout, "JPIP-layers: %d\r\n", codeidx->COD.numOflayers);
query_param.layers = codeidx->COD.numOflayers;
}
}
//meta
if( query_param.box_type[0][0] != 0 && query_param.len != 0)
enqueue_metabins( query_param, codeidx->metadatalist, *msgqueue);
// image codestream
if( query_param.fx > 0 && query_param.fy > 0){
if( !cachemodel->mhead_model && query_param.len != 0)
enqueue_mainheader( *msgqueue);
enqueue_imagedata( query_param, *msgqueue);
}
return true;
}
/**
* enqueue precinct data-bins into the queue
*
* @param[in] xmin min x coordinate in the tile at the decomposition level
* @param[in] xmax max x coordinate in the tile at the decomposition level
* @param[in] ymin min y coordinate in the tile at the decomposition level
* @param[in] ymax max y coordinate in the tile at the decomposition level
* @param[in] tile_id tile index
* @param[in] level decomposition level
* @param[in] lastcomp last component number
* @param[in] comps pointer to the array that stores the requested components
* @param[in] layers number of quality layers
* @param[in] msgqueue message queue
* @return
*/
void enqueue_precincts( int xmin, int xmax, int ymin, int ymax, int tile_id, int level, int lastcomp, bool *comps, int layers, msgqueue_param_t *msgqueue);
/**
* enqueue all precincts inside a tile into the queue
*
* @param[in] tile_id tile index
* @param[in] level decomposition level
* @param[in] lastcomp last component number
* @param[in] comps pointer to the array that stores the requested components
* @param[in] layers number of quality layers
* @param[in] msgqueue message queue
* @return
*/
void enqueue_allprecincts( int tile_id, int level, int lastcomp, bool *comps, int layers, msgqueue_param_t *msgqueue);
void enqueue_imagedata( query_param_t query_param, msgqueue_param_t *msgqueue)
{
index_param_t *codeidx;
imgreg_param_t imgreg;
range_param_t tile_Xrange, tile_Yrange;
int u, v, tile_id;
int xmin, xmax, ymin, ymax;
int numOfreslev;
codeidx = msgqueue->cachemodel->target->codeidx;
if( !(msgqueue->cachemodel->jppstream) && get_nmax( codeidx->tilepart) == 1) // normally not the case
numOfreslev = 1;
else
numOfreslev = codeidx->COD.numOfdecomp+1;
imgreg = map_viewin2imgreg( query_param.fx, query_param.fy,
query_param.rx, query_param.ry, query_param.rw, query_param.rh,
codeidx->SIZ.XOsiz, codeidx->SIZ.YOsiz, codeidx->SIZ.Xsiz, codeidx->SIZ.Ysiz,
numOfreslev );
if( query_param.len == 0)
return;
for( u=0, tile_id=0; u<codeidx->SIZ.YTnum; u++){
tile_Yrange = get_tile_Yrange( codeidx->SIZ, tile_id, imgreg.level);
for( v=0; v<codeidx->SIZ.XTnum; v++, tile_id++){
tile_Xrange = get_tile_Xrange( codeidx->SIZ, tile_id, 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);
if( msgqueue->cachemodel->jppstream){
enqueue_tileheader( tile_id, msgqueue);
enqueue_allprecincts( tile_id, imgreg.level, query_param.lastcomp, query_param.comps, query_param.layers, msgqueue);
}
else
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);
if( msgqueue->cachemodel->jppstream){
enqueue_tileheader( tile_id, msgqueue);
xmin = tile_Xrange.minvalue >= imgreg.xosiz + imgreg.ox ? 0 : imgreg.xosiz + imgreg.ox - tile_Xrange.minvalue;
xmax = tile_Xrange.maxvalue <= imgreg.xosiz + imgreg.ox + imgreg.sx ? tile_Xrange.maxvalue - tile_Xrange.minvalue -1 : imgreg.xosiz + imgreg.ox + imgreg.sx - tile_Xrange.minvalue -1;
ymin = tile_Yrange.minvalue >= imgreg.yosiz + imgreg.oy ? 0 : imgreg.yosiz + imgreg.oy - tile_Yrange.minvalue;
ymax = tile_Yrange.maxvalue <= imgreg.yosiz + imgreg.oy + imgreg.sy ? tile_Yrange.maxvalue - tile_Yrange.minvalue -1 : imgreg.yosiz + imgreg.oy + imgreg.sy - tile_Yrange.minvalue -1;
enqueue_precincts( xmin, xmax, ymin, ymax, tile_id, imgreg.level, query_param.lastcomp, query_param.comps, query_param.layers, msgqueue);
}
else
enqueue_tile( tile_id, imgreg.level, msgqueue);
}
}
}
}
}
void enqueue_precincts( int xmin, int xmax, int ymin, int ymax, int tile_id, int level, int lastcomp, bool *comps, int layers, msgqueue_param_t *msgqueue)
{
index_param_t *codeidx;
int c, u, v, res_lev, dec_lev;
int seq_id;
Byte4_t XTsiz, YTsiz;
Byte4_t XPsiz, YPsiz;
Byte4_t xminP, xmaxP, yminP, ymaxP;
codeidx = msgqueue->cachemodel->target->codeidx;
for( c=0; c<codeidx->SIZ.Csiz; c++)
if( lastcomp == -1 /*all*/ || ( c<=lastcomp && comps[c])){
seq_id = 0;
for( res_lev=0, dec_lev=codeidx->COD.numOfdecomp; dec_lev>=level; res_lev++, dec_lev--){
XTsiz = get_tile_XSiz( codeidx->SIZ, tile_id, dec_lev);
YTsiz = get_tile_YSiz( codeidx->SIZ, tile_id, dec_lev);
XPsiz = ( codeidx->COD.Scod & 0x01) ? codeidx->COD.XPsiz[ res_lev] : XTsiz;
YPsiz = ( codeidx->COD.Scod & 0x01) ? codeidx->COD.YPsiz[ res_lev] : YTsiz;
for( u=0; u<ceil((double)YTsiz/(double)YPsiz); u++){
yminP = u*YPsiz;
ymaxP = (u+1)*YPsiz-1;
if( YTsiz <= ymaxP)
ymaxP = YTsiz-1;
for( v=0; v<ceil((double)XTsiz/(double)XPsiz); v++, seq_id++){
xminP = v*XPsiz;
xmaxP = (v+1)*XPsiz-1;
if( XTsiz <= xmaxP)
xmaxP = XTsiz-1;
if( xmaxP < xmin || xminP > xmax || ymaxP < ymin || yminP > ymax){
// Precinct completely excluded from view-window
}
else if( xminP >= xmin && xmaxP <= xmax && yminP >= ymin && ymaxP <= ymax){
// Precinct completely contained within view-window
// high priority
enqueue_precinct( seq_id, tile_id, c, (dec_lev>level)?-1:layers, msgqueue);
}
else{
// Precinct partially overlaps view-window
// low priority
enqueue_precinct( seq_id, tile_id, c, (dec_lev>level)?-1:layers, msgqueue);
}
}
}
}
}
}
void enqueue_allprecincts( int tile_id, int level, int lastcomp, bool *comps, int layers, msgqueue_param_t *msgqueue)
{
index_param_t *codeidx;
int c, i, res_lev, dec_lev;
int seq_id;
Byte4_t XTsiz, YTsiz;
Byte4_t XPsiz, YPsiz;
codeidx = msgqueue->cachemodel->target->codeidx;
for( c=0; c<codeidx->SIZ.Csiz; c++)
if( lastcomp == -1 /*all*/ || ( c<=lastcomp && comps[c])){
seq_id = 0;
for( res_lev=0, dec_lev=codeidx->COD.numOfdecomp; dec_lev>=level; res_lev++, dec_lev--){
XTsiz = get_tile_XSiz( codeidx->SIZ, tile_id, dec_lev);
YTsiz = get_tile_YSiz( codeidx->SIZ, tile_id, dec_lev);
XPsiz = ( codeidx->COD.Scod & 0x01) ? codeidx->COD.XPsiz[ res_lev] : XTsiz;
YPsiz = ( codeidx->COD.Scod & 0x01) ? codeidx->COD.YPsiz[ res_lev] : YTsiz;
for( i=0; i<ceil((double)YTsiz/(double)YPsiz)*ceil((double)XTsiz/(double)XPsiz); i++, seq_id++)
enqueue_precinct( seq_id, tile_id, c, (dec_lev>level)?-1:layers, 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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