========================================================================
- OpenJPIP software 2.0 ReadMe
+ OpenJPIP software 2.1 ReadMe
OpenJPEG:
http://www.openjpeg.org
( For more info about JPIP, check the website: http://www.jpeg.org/jpeg2000/j2kpart9.html)
The current implementation uses some results from the 2KAN project (http://www.2kan.org).
-First Version 2.0 covers:
+Version 2.1 covers:
- JPT-stream (Tile) and JPP-stream (Precinct) media types
- Session, channels, cache model managements
- JPIP over HTTP
- Indexing JPEG 2000 files
- Embedding XML formatted metadata
- Region Of Interest (ROI) requests
+ - Access to JP2 files with their URL
----------
2. License
3. System requirements
----------
- - OpenJPEG library (currently assumes it is installed on the system => will not use the one built higher in the directory structure)
- FastCGI development kit (C libraries) at server (http://www.fastcgi.com)
+ - libcURL library
- Java application launcher at client
<Optional>
- Xerces2 java XML parser on the client for accessing embedded image metadata (http://xerces.apache.org/xerces2-j)
% ../opj_dec_server
2. Open image viewers (as many as needed)
- % java -jar opj_viewer.jar http://hostname/myFCGI JP2_filename.jp2 [stateless/session] [jptstream/jppstream]
+ % java -jar opj_viewer.jar http://hostname/myFCGI path/filename.jp2 [stateless/session] [jptstream/jppstream]
( The arguments
- http://hostname/myFCGI is the HTTP server URI (myFCGI refers to opj_server by the server setting)
- - JP2_filename.jp2 is the name of a JP2 file available on the server.
+ - path/filename.jp2 is the server local path or URL of a JP2 file
- request type stateless for no caching, session (default) for caching
- return media type, JPT-stream tile based stream, or JPP-stream (default) precinct based stream
Image viewer GUI instructions:
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
+#include <curl/curl.h>
#include "target_manager.h"
#ifdef SERVER
/**
* open jp2 format image file
*
- * @param[in] filename file name (.jp2)
- * @return file descriptor
+ * @param[in] filepath file name (.jp2)
+ * @param[out] tmpfname new file name if filepath is a URL
+ * @return file descriptor
*/
-int open_jp2file( char filename[]);
+int open_jp2file( char filepath[], char tmpfname[]);
target_param_t * gene_target( targetlist_param_t *targetlist, char *targetpath)
{
target_param_t *target;
int fd;
index_param_t *jp2idx;
+ char tmpfname[MAX_LENOFTID];
static int last_csn = 0;
-
+
if( targetpath[0]=='\0'){
fprintf( FCGI_stderr, "Error: exception, no targetpath in gene_target()\n");
return NULL;
}
- if((fd = open_jp2file( targetpath)) == -1){
+ if((fd = open_jp2file( targetpath, tmpfname)) == -1){
fprintf( FCGI_stdout, "Status: 404\r\n");
return NULL;
}
target = (target_param_t *)malloc( sizeof(target_param_t));
snprintf( target->tid, MAX_LENOFTID, "%x-%x", (unsigned int)time(NULL), (unsigned int)rand());
- target->filename = strdup( targetpath);
+ target->targetname = strdup( targetpath);
target->fd = fd;
+ if( tmpfname[0])
+ target->tmpfname = strdup( tmpfname);
+ else
+ target->tmpfname = NULL;
target->csn = last_csn++;
target->codeidx = jp2idx;
target->num_of_use = 0;
void delete_target( target_param_t **target)
{
close( (*target)->fd);
-
+
+ if( (*target)->tmpfname){
+ fprintf( FCGI_stderr, "Temporal file %s is deleted\n", (*target)->tmpfname);
+ remove( (*target)->tmpfname);
+ }
+
if( (*target)->codeidx)
delete_index ( &(*target)->codeidx);
-
+
#ifndef SERVER
- fprintf( logstream, "local log: target: %s deleted\n", (*target)->filename);
+ fprintf( logstream, "local log: target: %s deleted\n", (*target)->targetname);
#endif
- free( (*target)->filename);
+ free( (*target)->targetname);
free(*target);
}
fprintf( logstream, "target:\n");
fprintf( logstream, "\t tid=%s\n", target->tid);
fprintf( logstream, "\t csn=%d\n", target->csn);
- fprintf( logstream, "\t target=%s\n\n", target->filename);
+ fprintf( logstream, "\t target=%s\n\n", target->targetname);
}
void print_alltarget( targetlist_param_t *targetlist)
while( foundtarget != NULL){
- if( strcmp( targetname, foundtarget->filename) == 0)
+ if( strcmp( targetname, foundtarget->targetname) == 0)
return foundtarget;
foundtarget = foundtarget->next;
return NULL;
}
-int open_jp2file( char filename[])
+static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream);
+
+int open_jp2file( char filepath[], char tmpfname[])
{
int fd;
char *data;
-
- if( (fd = open( filename, O_RDONLY)) == -1){
- fprintf( FCGI_stdout, "Reason: Target %s not found\r\n", filename);
- return -1;
+ CURL *curl_handle;
+
+ // download remote target file to local storage
+ if( strncmp( filepath, "http://", 7) == 0){
+ curl_handle = curl_easy_init();
+ curl_easy_setopt(curl_handle, CURLOPT_URL, filepath);
+ curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
+
+ snprintf( tmpfname, MAX_LENOFTID, "%x-%x.jp2", (unsigned int)time(NULL), (unsigned int)rand());
+ fprintf( FCGI_stderr, "%s is downloaded to a temporal new file %s\n", filepath, tmpfname);
+ if( (fd = open( tmpfname, O_RDWR|O_CREAT|O_EXCL, S_IRWXU)) == -1){
+ fprintf( FCGI_stdout, "Reason: File open error %s\r\n", tmpfname);
+ curl_easy_cleanup(curl_handle);
+ return -1;
+ }
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, &fd);
+ curl_easy_perform(curl_handle);
+ curl_easy_cleanup(curl_handle);
+ }
+ else{
+ tmpfname[0] = 0;
+ if( (fd = open( filepath, O_RDONLY)) == -1){
+ fprintf( FCGI_stdout, "Reason: Target %s not found\r\n", filepath);
+ return -1;
+ }
}
// Check resource is a JP family file.
if( lseek( fd, 0, SEEK_SET)==-1){
close(fd);
- fprintf( FCGI_stdout, "Reason: Target %s broken (lseek error)\r\n", filename);
+ fprintf( FCGI_stdout, "Reason: Target %s broken (lseek error)\r\n", filepath);
return -1;
}
data = (char *)malloc( 12); // size of header
+
if( read( fd, data, 12) != 12){
free( data);
close(fd);
- fprintf( FCGI_stdout, "Reason: Target %s broken (read error)\r\n", filename);
+ fprintf( FCGI_stdout, "Reason: Target %s broken (read error)\r\n", filepath);
return -1;
}
*(data + 3) != 12 || strncmp (data + 4, "jP \r\n\x87\n", 8)){
free( data);
close(fd);
- fprintf( FCGI_stdout, "Reason: No JPEG 2000 Signature box in target %s\r\n", filename);
+ fprintf( FCGI_stdout, "Reason: No JPEG 2000 Signature box in target %s\r\n", filepath);
return -1;
}
+
free( data);
+
return fd;
}
+
+static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+ int *fd = (int *)stream;
+ int written = write( *fd, ptr, size*nmemb);
+
+ return written;
+}
projects / openjpeg.git / commitdiff
