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elphel-apps-imgsrv
Commit a3eb9430 authored by Mikhail Karpenko's avatar Mikhail Karpenko
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Edit two Exif fields 

HostComputer exif field containing serial number was replaced with more
suitable CameraSerialNumber. IPTCNAA field containing frame number was
replaced with ImageNumber.
parent 6393936e
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Showing with 533 additions and 522 deletions
Exif_template.xml
View file @ a3eb9430
......@@ -9,6 +9,9 @@
dlen: length of a variable data field, stored in frame buffer
ltag: Exif_tag+(group<<16). If specified, is used by the software, while the Exif output will still have tag
SubSecTimeOriginal should go immediately after DateTimeOriginal (in the sequence numbers, not in the Exif templete)
Update, June 2016: PageNumber field is used as sensor port number, HostComputer field is replaced with CameraSerialNumber and
FrameNumber field (which actually was IPTCNAA field) is replaced with standart ImageNumber field.
-->
<Exif>
<Image>
......@@ -22,8 +25,8 @@
<DateTime tag="0x0132" format="ASCII" count="20" seq="1" dlen="20">
<value>2001:06:21 12:00:00</value>
</DateTime>
<HostComputer tag="0x013c" format="ASCII" function="SERIAL"/>
<FrameNumber tag="0x83bb" format="LONG" count="1" seq="25" dlen="4"/>
<CameraSerialNumber tag="0xc62f" format="ASCII" function="SERIAL"/>
<ImageNumber tag="0x9211" format="LONG" count="1" seq="25" dlen="4"/>
<Orientation tag="0x112" format="SHORT" count="1" seq="27" dlen="2"/>
<PageNumber tag="0x129" format="SHORT" count="1" seq="28" dlen="2"/>
<ExifTag tag="0x8769" format="LONG" function="EXIFTAG"/>
......
exif.php
View file @ a3eb9430
#!/usr/local/sbin/php -q
#!/usr/bin/env php
<?php
/*!
*! FILE NAME : exif.php
*! DESCRIPTION: This program collects information about the camera (version, software, sensor)
*! and combines it with the Exif template (default is /etc/Exif_template.xml) to prepare generation
*! of Exif headers.
*! It works in a command line with a single optional parameter - location of the template file and
*! trough the CGI interface. In that case it accepts the following parameter
*! init - program Exif with default /etc/Exif_template.xml
*! init=path - program Exif with alternative file
*! noGPS - don't include GPS-related fields
*! nocompass - don't include compass-related fields
*! template - print currently loaded template data (hex dump)
*! metadir - print currently loaded meta directory that matches variable Exif fields with the template
*! exif=0 - print current Exif page (updated in real time)
*! exif=NNN - print one of the Exif pages in the buffer (debug feature, current buffer pointer is not known here)
*!
*! Copyright (C) 2007-2008 Elphel, Inc
*! -----------------------------------------------------------------------------**
*!
*! This program is free software: you can redistribute it and/or modify
*! it under the terms of the GNU General Public License as published by
*! the Free Software Foundation, either version 3 of the License, or
*! (at your option) any later version.
*!
*! This program is distributed in the hope that it will be useful,
*! but WITHOUT ANY WARRANTY; without even the implied warranty of
*! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*! GNU General Public License for more details.
*!
*! You should have received a copy of the GNU General Public License
*! along with this program. If not, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*! $Log: exif.php,v $
*! Revision 1.2 2010/08/10 21:14:31 elphel
*! 8.0.8.39 - added EEPROM support for multiplexor and sensor boards, so autocampars.php uses application-specific defaults. Exif Orientation tag support, camera Model reflects application and optional mode (i.e. camera number in Eyesis)
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/08/11 19:11:32 elphel
*! comments
*!
*! Revision 1.1 2008/04/07 09:12:14 elphel
*! New Exif template generation
*!
*! $Log: exif.php,v $
*! Revision 1.2 2010/08/10 21:14:31 elphel
*! 8.0.8.39 - added EEPROM support for multiplexor and sensor boards, so autocampars.php uses application-specific defaults. Exif Orientation tag support, camera Model reflects application and optional mode (i.e. camera number in Eyesis)
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/08/11 19:11:32 elphel
*! comments
*!
*! Revision 1.1 2008/04/07 09:12:14 elphel
*! New Exif template generation
*!
*! Revision 1.1.1.1 2007/10/03 19:05:53 elphel
*! This is a fresh tree based on elphel353-2.10
*!
*! Revision 1.6 2007/10/03 19:05:53 elphel
*! cosmetic
*!
*! Revision 1.5 2007/10/03 18:37:53 elphel
*! Made nice html output to see the result data
*!
*! Revision 1.4 2007/10/03 06:33:31 elphel
*! fixed wrong copyright year
*!
*! Revision 1.3 2007/10/02 19:44:03 elphel
*! minor bug fixes, added "manufacturer note" field for raw frame metadata (36 bytes - /include/asm-cris/c313.h frame_params_t)
*!
*! Revision 1.2 2007/09/25 23:34:02 elphel
*! Fixed time strings to the right length
*!
*! Revision 1.1 2007/09/24 07:27:57 elphel
*! Started php script that prepares Exif header information for serving images by imgsrv
*!
*/
*! FILE NAME : exif.php
*! DESCRIPTION: This program collects information about the camera (version, software, sensor)
*! and combines it with the Exif template (default is /etc/Exif_template.xml) to prepare generation
*! of Exif headers.
*! It works in a command line with a single optional parameter - location of the template file and
*! trough the CGI interface. In that case it accepts the following parameter
*! init - program Exif with default /etc/Exif_template.xml
*! init=path - program Exif with alternative file
*! noGPS - don't include GPS-related fields
*! nocompass - don't include compass-related fields
*! template - print currently loaded template data (hex dump)
*! metadir - print currently loaded meta directory that matches variable Exif fields with the template
*! exif=0 - print current Exif page (updated in real time)
*! exif=NNN - print one of the Exif pages in the buffer (debug feature, current buffer pointer is not known here)
*!
*! Copyright (C) 2007-2016 Elphel, Inc
*! -----------------------------------------------------------------------------**
*!
*! This program is free software: you can redistribute it and/or modify
*! it under the terms of the GNU General Public License as published by
*! the Free Software Foundation, either version 3 of the License, or
*! (at your option) any later version.
*!
*! This program is distributed in the hope that it will be useful,
*! but WITHOUT ANY WARRANTY; without even the implied warranty of
*! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*! GNU General Public License for more details.
*!
*! You should have received a copy of the GNU General Public License
*! along with this program. If not, see <http://www.gnu.org/licenses/>.
*! -----------------------------------------------------------------------------**
*! $Log: exif.php,v $
*! Revision 1.2 2010/08/10 21:14:31 elphel
*! 8.0.8.39 - added EEPROM support for multiplexor and sensor boards, so autocampars.php uses application-specific defaults. Exif Orientation tag support, camera Model reflects application and optional mode (i.e. camera number in Eyesis)
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/08/11 19:11:32 elphel
*! comments
*!
*! Revision 1.1 2008/04/07 09:12:14 elphel
*! New Exif template generation
*!
*! $Log: exif.php,v $
*! Revision 1.2 2010/08/10 21:14:31 elphel
*! 8.0.8.39 - added EEPROM support for multiplexor and sensor boards, so autocampars.php uses application-specific defaults. Exif Orientation tag support, camera Model reflects application and optional mode (i.e. camera number in Eyesis)
*!
*! Revision 1.1.1.1 2008/11/27 20:04:01 elphel
*!
*!
*! Revision 1.2 2008/08/11 19:11:32 elphel
*! comments
*!
*! Revision 1.1 2008/04/07 09:12:14 elphel
*! New Exif template generation
*!
*! Revision 1.1.1.1 2007/10/03 19:05:53 elphel
*! This is a fresh tree based on elphel353-2.10
*!
*! Revision 1.6 2007/10/03 19:05:53 elphel
*! cosmetic
*!
*! Revision 1.5 2007/10/03 18:37:53 elphel
*! Made nice html output to see the result data
*!
*! Revision 1.4 2007/10/03 06:33:31 elphel
*! fixed wrong copyright year
*!
*! Revision 1.3 2007/10/02 19:44:03 elphel
*! minor bug fixes, added "manufacturer note" field for raw frame metadata (36 bytes - /include/asm-cris/c313.h frame_params_t)
*!
*! Revision 1.2 2007/09/25 23:34:02 elphel
*! Fixed time strings to the right length
*!
*! Revision 1.1 2007/09/24 07:27:57 elphel
*! Started php script that prepares Exif header information for serving images by imgsrv
*!
*/
//TODO: Decide with the start sequence, more data is availble after the sensor is initialized.
// Or leave it to imgsrv (it still needs sensor to start first), just put placeholders
// use http://www.exiv2.org/tags.html for reference of the Exif fields if you need to add modify
......@@ -90,6 +90,10 @@ $ExifDeviceMetadirFilename= "/dev/exif_metadir";
$ExifDeviceExifFilename= "/dev/exif_exif";
$ExifDeviceMetaFilename= "/dev/exif_meta";
$DeviceSNFilename = "/sys/devices/soc0/elphel393-init/serial";
$DeviceRevisionFilename = "/sys/devices/soc0/elphel393-init/revision";
$DeviceBrand = "Elphel";
$DeviceModel = "Elphel393";
//! if called from the command line - accepts just one parameter - configuration file,
//! through CGI - accepts more parameters
......@@ -97,31 +101,31 @@ $ExifDeviceMetaFilename= "/dev/exif_meta";
$ExifXMLName="/etc/Exif_template.xml";
$init=false;
if ($_SERVER['REQUEST_METHOD']=="GET") {
if ($_GET["init"]!==NULL) {
if ($_GET["init"]) $ExifXMLName=$_GET["init"];
$init=true; // in any case - filename specified or not
$noGPS= ($_GET["noGPS"]!==NULL);
$nocompass= ($_GET["nocompass"]!==NULL);
}
if ($_GET["init"]!==NULL) {
if ($_GET["init"]) $ExifXMLName=$_GET["init"];
$init=true; // in any case - filename specified or not
$noGPS= ($_GET["noGPS"]!==NULL);
$nocompass= ($_GET["nocompass"]!==NULL);
}
} else {
foreach ($_SERVER['argv'] as $param) if (substr($param,0,4)=="init") {
$param=substr($param,5);
if (strlen($param)>0) $ExifXMLName=$param;
$init=true; //
break;
}
if ($init) {
$noGPS= in_array ('noGPS' , $_SERVER['argv']);
$nocompass= in_array ('nocompass', $_SERVER['argv']);
} else {
echo <<<USAGE
foreach ($_SERVER['argv'] as $param) if (substr($param,0,4)=="init") {
$param=substr($param,5);
if (strlen($param)>0) $ExifXMLName=$param;
$init=true; //
break;
}
if ($init) {
$noGPS= in_array ('noGPS' , $_SERVER['argv']);
$nocompass= in_array ('nocompass', $_SERVER['argv']);
} else {
echo <<<USAGE
Usage: {$_SERVER['argv'][0]} [init[=filename.xml] [noGPS] [nocompass]]
USAGE;
exit (0);
}
exit (0);
}
}
define("EXIF_BYTE", 1);
......@@ -138,464 +142,468 @@ define("EXIF_SRATIONAL",10);
define("EXIF_LSEEK_ENABLE", 2); // rebuild buffer
/// ===== init/init= CGI parameters or command line mode =======
if ($init) { // configure Exif data
$exif_head= array (
0xff, 0xe1, // APP1 marker
// offset=2 - start of Exif header
0x00, 0x00, // - length of the Exif header (including this length bytes) - we'll fill it later, we do not know it yet
0x45,0x78,0x69,0x66,0x00,0x00); // Exif header
$Exif_length_offset= 2; // put total length here (big endian, 2 bytes)
$exif_data= array (// start of TIFF Header, data offsets will match indexes in this array
0x4d,0x4d, // (MM) Big endian, MSB goes first in multi-byte data
0x00,0x2a, // Tag Mark
0x00,0x00,0x00,0x08); //offset to first IDF (from the beginning of the TIFF header, so 8 is minimum)
$xml_exif = simplexml_load_file($ExifXMLName);
if ($xml_exif->GPSInfo) {
/// remove all tags named "Compass..."
if ($nocompass) {
$tounset=array();
foreach ($xml_exif->GPSInfo->children() as $entry) if (strpos ($entry->getName() , "Compass" )!==false) $tounset[]=$entry->getName();
foreach ($tounset as $entry) unset ($xml_exif->GPSInfo->{$entry});
}
if ($noGPS) {
unset($xml_exif->GPSInfo);
unset($xml_exif->Image->GPSTag);
}
}
$IFD_offset= count($exif_data);
$SUB_IFD_offset= 12*count($xml_exif->Image->children())+2+4+$IFD_offset;
$GPSInfo_offset= 12*count($xml_exif->Photo->children())+2+4+$SUB_IFD_offset;
$data_offset= $GPSInfo_offset+(($xml_exif->GPSInfo)?(12*count($xml_exif->GPSInfo->children())+2+4):0); //$GPSInfo is optional
if ($_SERVER['REQUEST_METHOD']) {
echo "<pre>";
printf ("IFD_offset=0x%x\n",$IFD_offset);
printf ("SUB_IFD_offset=0x%x\n",$SUB_IFD_offset);
printf ("GPSInfo_offset=0x%x\n",$GPSInfo_offset);
printf ("data_offset=0x%x\n",$data_offset);
}
/// Now modify variable fields substituting values
foreach ($xml_exif->Image->children() as $entry) substitute_value($entry);
foreach ($xml_exif->Photo->children() as $entry) substitute_value($entry);
if ($xml_exif->GPSInfo) {
foreach ($xml_exif->GPSInfo->children() as $entry) substitute_value($entry);
}
$ifd_pointer=$IFD_offset;
$data_pointer=$data_offset;
start_ifd(count($xml_exif->Image->children()));
foreach ($xml_exif->Image->children() as $entry) process_ifd_entry($entry,0);
finish_ifd();
$ifd_pointer=$SUB_IFD_offset;
start_ifd(count($xml_exif->Photo->children()));
foreach ($xml_exif->Photo->children() as $entry) process_ifd_entry($entry,1);
finish_ifd();
if ($xml_exif->GPSInfo) {
$ifd_pointer=$GPSInfo_offset;
start_ifd(count($xml_exif->GPSInfo->children()));
foreach ($xml_exif->GPSInfo->children() as $entry) process_ifd_entry($entry,2);
finish_ifd();
}
$exif_len=count($exif_head)+count($exif_data)-$Exif_length_offset;
$exif_head[$Exif_length_offset]= ($exif_len >> 8) & 0xff;
$exif_head[$Exif_length_offset+1]= $exif_len & 0xff;
$Exif_str="";
for ($i=0; $i<count($exif_head);$i++) $Exif_str.= chr ($exif_head[$i]);
for ($i=0; $i<count($exif_data);$i++) $Exif_str.= chr ($exif_data[$i]);
$Exif_file = fopen($ExifDeviceTemplateFilename, 'w');
fwrite ($Exif_file,$Exif_str); /// will disable and invalidate Exif data
fclose($Exif_file);
///Exif template is done, now we need a directory to map frame meta data to fields in the template.
$dir_sequence=array();
$dir_entries=array();
foreach ($xml_exif->Image->children() as $entry) addDirEntry($entry);
foreach ($xml_exif->Photo->children() as $entry) addDirEntry($entry);
if ($xml_exif->GPSInfo) {
foreach ($xml_exif->GPSInfo->children() as $entry) addDirEntry($entry);
}
array_multisort($dir_sequence,$dir_entries);
$frame_meta_size=0;
for ($i=0;$i<count($dir_entries);$i++) {
$dir_entries[$i]["src"]=$frame_meta_size;
$frame_meta_size+=$dir_entries[$i]["len"];
}
$Exif_str="";
foreach ($dir_entries as $entry) $Exif_str.=pack("V*",$entry["ltag"],$entry["len"],$entry["src"],$entry["dst"]);
$Exif_meta_file = fopen($ExifDeviceMetadirFilename, 'w');
fwrite ($Exif_meta_file,$Exif_str); /// will disable and invalidate Exif data
fclose($Exif_meta_file);
///Rebuild buffer and enable Exif generation/output:
$Exif_file = fopen($ExifDeviceTemplateFilename, 'w');
fseek ($Exif_file, EXIF_LSEEK_ENABLE, SEEK_END) ;
fclose($Exif_file);
if ($_SERVER['REQUEST_METHOD']) {
echo "</pre>";
}
if ($_SERVER['REQUEST_METHOD']) {
echo "<hr/>\n";
test_print_header();
echo "<hr/>\n";
test_print_directory();
}
} //if ($init) // configure Exif data
if ($init) { // configure Exif data
$exif_head= array (
0xff, 0xe1, // APP1 marker
// offset=2 - start of Exif header
0x00, 0x00, // - length of the Exif header (including this length bytes) - we'll fill it later, we do not know it yet
0x45,0x78,0x69,0x66,0x00,0x00); // Exif header
$Exif_length_offset= 2; // put total length here (big endian, 2 bytes)
$exif_data= array (// start of TIFF Header, data offsets will match indexes in this array
0x4d,0x4d, // (MM) Big endian, MSB goes first in multi-byte data
0x00,0x2a, // Tag Mark
0x00,0x00,0x00,0x08); //offset to first IDF (from the beginning of the TIFF header, so 8 is minimum)
$xml_exif = simplexml_load_file($ExifXMLName);
if ($xml_exif->GPSInfo) {
/// remove all tags named "Compass..."
if ($nocompass) {
$tounset=array();
foreach ($xml_exif->GPSInfo->children() as $entry) if (strpos ($entry->getName() , "Compass" )!==false) $tounset[]=$entry->getName();
foreach ($tounset as $entry) unset ($xml_exif->GPSInfo->{$entry});
}
if ($noGPS) {
unset($xml_exif->GPSInfo);
unset($xml_exif->Image->GPSTag);
}
}
$IFD_offset= count($exif_data);
$SUB_IFD_offset= 12*count($xml_exif->Image->children())+2+4+$IFD_offset;
$GPSInfo_offset= 12*count($xml_exif->Photo->children())+2+4+$SUB_IFD_offset;
$data_offset= $GPSInfo_offset+(($xml_exif->GPSInfo)?(12*count($xml_exif->GPSInfo->children())+2+4):0); //$GPSInfo is optional
if ($_SERVER['REQUEST_METHOD']) {
echo "<pre>";
printf ("IFD_offset=0x%x\n",$IFD_offset);
printf ("SUB_IFD_offset=0x%x\n",$SUB_IFD_offset);
printf ("GPSInfo_offset=0x%x\n",$GPSInfo_offset);
printf ("data_offset=0x%x\n",$data_offset);
}
/// Now modify variable fields substituting values
foreach ($xml_exif->Image->children() as $entry) substitute_value($entry);
foreach ($xml_exif->Photo->children() as $entry) substitute_value($entry);
if ($xml_exif->GPSInfo) {
foreach ($xml_exif->GPSInfo->children() as $entry) substitute_value($entry);
}
$ifd_pointer=$IFD_offset;
$data_pointer=$data_offset;
start_ifd(count($xml_exif->Image->children()));
foreach ($xml_exif->Image->children() as $entry) process_ifd_entry($entry,0);
finish_ifd();
$ifd_pointer=$SUB_IFD_offset;
start_ifd(count($xml_exif->Photo->children()));
foreach ($xml_exif->Photo->children() as $entry) process_ifd_entry($entry,1);
finish_ifd();
if ($xml_exif->GPSInfo) {
$ifd_pointer=$GPSInfo_offset;
start_ifd(count($xml_exif->GPSInfo->children()));
foreach ($xml_exif->GPSInfo->children() as $entry) process_ifd_entry($entry,2);
finish_ifd();
}
$exif_len=count($exif_head)+count($exif_data)-$Exif_length_offset;
$exif_head[$Exif_length_offset]= ($exif_len >> 8) & 0xff;
$exif_head[$Exif_length_offset+1]= $exif_len & 0xff;
$Exif_str="";
for ($i=0; $i<count($exif_head);$i++) $Exif_str.= chr ($exif_head[$i]);
for ($i=0; $i<count($exif_data);$i++) $Exif_str.= chr ($exif_data[$i]);
$Exif_file = fopen($ExifDeviceTemplateFilename, 'w');
fwrite ($Exif_file,$Exif_str); /// will disable and invalidate Exif data
fclose($Exif_file);
///Exif template is done, now we need a directory to map frame meta data to fields in the template.
$dir_sequence=array();
$dir_entries=array();
foreach ($xml_exif->Image->children() as $entry) addDirEntry($entry);
foreach ($xml_exif->Photo->children() as $entry) addDirEntry($entry);
if ($xml_exif->GPSInfo) {
foreach ($xml_exif->GPSInfo->children() as $entry) addDirEntry($entry);
}
array_multisort($dir_sequence,$dir_entries);
$frame_meta_size=0;
for ($i=0;$i<count($dir_entries);$i++) {
$dir_entries[$i]["src"]=$frame_meta_size;
$frame_meta_size+=$dir_entries[$i]["len"];
}
$Exif_str="";
foreach ($dir_entries as $entry) $Exif_str.=pack("V*",$entry["ltag"],$entry["len"],$entry["src"],$entry["dst"]);
$Exif_meta_file = fopen($ExifDeviceMetadirFilename, 'w');
fwrite ($Exif_meta_file,$Exif_str); /// will disable and invalidate Exif data
fclose($Exif_meta_file);
///Rebuild buffer and enable Exif generation/output:
$Exif_file = fopen($ExifDeviceTemplateFilename, 'w');
fseek ($Exif_file, EXIF_LSEEK_ENABLE, SEEK_END) ;
fclose($Exif_file);
if ($_SERVER['REQUEST_METHOD']) {
echo "</pre>";
}
if ($_SERVER['REQUEST_METHOD']) {
echo "<hr/>\n";
test_print_header();
echo "<hr/>\n";
test_print_directory();
}
} //if ($init) // configure Exif data
/// ===== processing optional parameters =======
/// ===== read template =======
if ($_GET["description"]!==NULL) {
/// Read metadir to find the length of the description field
$Exif_file = fopen($ExifDeviceMetadirFilename, 'r');
fseek ($Exif_file, 0, SEEK_END) ;
fseek ($Exif_file, 0, SEEK_SET) ;
$metadir=fread ($Exif_file, 4096);
fclose($Exif_file);
$dir_entries=array();
for ($i=0; $i<strlen($metadir);$i+=16) {
$dir_entries[]=unpack("V*",substr($metadir,$i,16));
}
foreach ($dir_entries as $entry)
if ($entry[1]==0x010e) {
$descr=$_GET["description"];
$Exif_file = fopen($ExifDeviceMetaFilename, 'w+');
fseek ($Exif_file, $entry[3], SEEK_SET) ;
$descr_was=fread ($Exif_file, $entry[2]);
$zero=strpos($descr_was,chr(0));
if ($zero!==false) $descr_was=substr($descr_was,0, $zero);
if ($descr) {
$descr= str_pad($descr, $entry[2], chr(0));
fseek ($Exif_file, $entry[3], SEEK_SET) ;
fwrite($Exif_file, $descr,$entry[2]);
}
fclose($Exif_file);
var_dump($descr_was); echo "<br/>\n";
break;
}
}
if ($_GET["description"]!==NULL) {
/// Read metadir to find the length of the description field
$Exif_file = fopen($ExifDeviceMetadirFilename, 'r');
fseek ($Exif_file, 0, SEEK_END) ;
fseek ($Exif_file, 0, SEEK_SET) ;
$metadir=fread ($Exif_file, 4096);
fclose($Exif_file);
$dir_entries=array();
for ($i=0; $i<strlen($metadir);$i+=16) {
$dir_entries[]=unpack("V*",substr($metadir,$i,16));
}
foreach ($dir_entries as $entry)
if ($entry[1]==0x010e) {
$descr=$_GET["description"];
$Exif_file = fopen($ExifDeviceMetaFilename, 'w+');
fseek ($Exif_file, $entry[3], SEEK_SET) ;
$descr_was=fread ($Exif_file, $entry[2]);
$zero=strpos($descr_was,chr(0));
if ($zero!==false) $descr_was=substr($descr_was,0, $zero);
if ($descr) {
$descr= str_pad($descr, $entry[2], chr(0));
fseek ($Exif_file, $entry[3], SEEK_SET) ;
fwrite($Exif_file, $descr,$entry[2]);
}
fclose($Exif_file);
var_dump($descr_was); echo "<br/>\n";
break;
}
}
/// ===== read template =======
if ($_GET["template"]!==NULL) {
$Exif_file = fopen($ExifDeviceTemplateFilename, 'r');
fseek ($Exif_file, 0, SEEK_END) ;
echo "<hr/>\n";
echo "ftell()=".ftell($Exif_file).", ";
fseek ($Exif_file, 0, SEEK_SET) ;
$template=fread ($Exif_file, 4096);
fclose($Exif_file);
echo "read ".strlen($template)." bytes<br/>\n";
hexdump($template);
}
if ($_GET["template"]!==NULL) {
$Exif_file = fopen($ExifDeviceTemplateFilename, 'r');
fseek ($Exif_file, 0, SEEK_END) ;
echo "<hr/>\n";
echo "ftell()=".ftell($Exif_file).", ";
fseek ($Exif_file, 0, SEEK_SET) ;
$template=fread ($Exif_file, 4096);
fclose($Exif_file);
echo "read ".strlen($template)." bytes<br/>\n";
hexdump($template);
}
/// ===== read meta directory =======
if ($_GET["metadir"]!==NULL) {
$Exif_file = fopen($ExifDeviceMetadirFilename, 'r');
fseek ($Exif_file, 0, SEEK_END) ;
echo "<hr/>\n";
echo "ftell()=".ftell($Exif_file).", ";
fseek ($Exif_file, 0, SEEK_SET) ;
$metadir=fread ($Exif_file, 4096);
fclose($Exif_file);
echo "read ".strlen($metadir)." bytes<br/>\n";
$dir_entries=array();
for ($i=0; $i<strlen($metadir);$i+=16) {
$dir_entries[]=unpack("V*",substr($metadir,$i,16));
}
print_directory($dir_entries);
}
if ($_GET["metadir"]!==NULL) {
$Exif_file = fopen($ExifDeviceMetadirFilename, 'r');
fseek ($Exif_file, 0, SEEK_END) ;
echo "<hr/>\n";
echo "ftell()=".ftell($Exif_file).", ";
fseek ($Exif_file, 0, SEEK_SET) ;
$metadir=fread ($Exif_file, 4096);
fclose($Exif_file);
echo "read ".strlen($metadir)." bytes<br/>\n";
$dir_entries=array();
for ($i=0; $i<strlen($metadir);$i+=16) {
$dir_entries[]=unpack("V*",substr($metadir,$i,16));
}
print_directory($dir_entries);
}
/// ===== read one of the Exif pages (0 - current, 1..512 - buffer) =======
if ($_GET["exif"]!==NULL) {
$frame=$_GET["exif"]+0;
echo "<hr/>\n";
printf ("Reading frame %d, ",$frame);
$Exif_file = fopen($ExifDeviceExifFilename, 'r');
fseek ($Exif_file, 1, SEEK_END) ;
$exif_size=ftell($Exif_file);
if ($frame) fseek ($Exif_file, $frame, SEEK_END) ;
else fseek ($Exif_file, 0, SEEK_SET) ;
echo "ftell()=".ftell($Exif_file).", ";
$exif_data=fread ($Exif_file, $exif_size);
fclose($Exif_file);
echo "read ".strlen($exif_data)." bytes<br/>\n";
hexdump($exif_data);
}
exit(0);
if ($_GET["exif"]!==NULL) {
$frame=$_GET["exif"]+0;
echo "<hr/>\n";
printf ("Reading frame %d, ",$frame);
$Exif_file = fopen($ExifDeviceExifFilename, 'r');
fseek ($Exif_file, 1, SEEK_END) ;
$exif_size=ftell($Exif_file);
if ($frame) fseek ($Exif_file, $frame, SEEK_END) ;
else fseek ($Exif_file, 0, SEEK_SET) ;
echo "ftell()=".ftell($Exif_file).", ";
$exif_data=fread ($Exif_file, $exif_size);
fclose($Exif_file);
echo "read ".strlen($exif_data)." bytes<br/>\n";
hexdump($exif_data);
}
exit(0);
/// ======================================= Functions ======================================
function hexdump($data) {
global $exif_head, $exif_data;
$l=strlen($data);
printf ("<h2>Exif size=%d bytes</h2>\n",$l);
printf ("<table border=\"0\">\n");
for ($i=0; $i<$l;$i=$i+16) {
printf("<tr><td>%03x</td><td>|</td>\n",$i);
for ($j=$i; $j<$i+16;$j++) {
printf("<td>");
if ($j<$l) {
$d=ord($data[$j]);
printf(" %02x",$d);
} else printf (" ");
printf("</td>");
}
printf("<td>|</td>");
for ($j=$i; $j< ($i+16);$j++) {
printf("<td>");
if ($j<$l) {
$d=ord($data[$j]);
if ($d<32 or $d>126) printf(".");
else printf ("%c",$d);
} else printf (" ");
printf("</td>");
}
printf("</tr>\n");
}
printf ("</table>");
global $exif_head, $exif_data;
$l=strlen($data);
printf ("<h2>Exif size=%d bytes</h2>\n",$l);
printf ("<table border=\"0\">\n");
for ($i=0; $i<$l;$i=$i+16) {
printf("<tr><td>%03x</td><td>|</td>\n",$i);
for ($j=$i; $j<$i+16;$j++) {
printf("<td>");
if ($j<$l) {
$d=ord($data[$j]);
printf(" %02x",$d);
} else printf (" ");
printf("</td>");
}
printf("<td>|</td>");
for ($j=$i; $j< ($i+16);$j++) {
printf("<td>");
if ($j<$l) {
$d=ord($data[$j]);
if ($d<32 or $d>126) printf(".");
else printf ("%c",$d);
} else printf (" ");
printf("</td>");
}
printf("</tr>\n");
}
printf ("</table>");
}
function print_directory($dir_entries) {
$meta_size=0;
foreach ($dir_entries as $entry) if (($entry[3]+$entry[2])>$meta_size) $meta_size=$entry[3]+$entry[2];
printf ("<h2>Frame meta data size=%d bytes</h2>\n",$meta_size);
printf ("<table border=\"1\">\n");
printf ("<tr><td>ltag</td><td>meta offset</td><td>Exif offset</td><td>length</td></tr>\n");
foreach ($dir_entries as $entry) {
printf ("<tr><td>0x%x</td><td>0x%x</td><td>0x%x</td><td>0x%x</td></tr>\n",$entry[1],$entry[3],$entry[4],$entry[2]);
}
printf ("</table>");
$meta_size=0;
foreach ($dir_entries as $entry) if (($entry[3]+$entry[2])>$meta_size) $meta_size=$entry[3]+$entry[2];
printf ("<h2>Frame meta data size=%d bytes</h2>\n",$meta_size);
printf ("<table border=\"1\">\n");
printf ("<tr><td>ltag</td><td>meta offset</td><td>Exif offset</td><td>length</td></tr>\n");
foreach ($dir_entries as $entry) {
printf ("<tr><td>0x%x</td><td>0x%x</td><td>0x%x</td><td>0x%x</td></tr>\n",$entry[1],$entry[3],$entry[4],$entry[2]);
}
printf ("</table>");
}
function test_print_header() {
global $exif_head, $exif_data;
$lh=count($exif_head);
$ld=count($exif_data);
printf ("<h2>Exif size=%d bytes (head=%d, data=%d)</h2>\n",$lh+$ld,$lh,$ld);
printf ("<table border=\"0\">\n");
for ($i=0; $i<$lh+$ld;$i=$i+16) {
printf("<tr><td>%03x</td><td>|</td>\n",$i);
for ($j=$i; $j<$i+16;$j++) {
printf("<td>");
if ($j<($lh+$ld)) {
$d=($j<$lh)?$exif_head[$j]:$exif_data[$j-$lh];
printf(" %02x",$d);
} else printf (" ");
printf("</td>");
}
printf("<td>|</td>");
for ($j=$i; $j< ($i+16);$j++) {
printf("<td>");
if ($j<($lh+$ld)) {
$d=($j<$lh)?$exif_head[$j]:$exif_data[$j-$lh];
if ($d<32 or $d>126) printf(".");
else printf ("%c",$d);
} else printf (" ");
printf("</td>");
}
printf("</tr>\n");
}
printf ("</table>");
global $exif_head, $exif_data;
$lh=count($exif_head);
$ld=count($exif_data);
printf ("<h2>Exif size=%d bytes (head=%d, data=%d)</h2>\n",$lh+$ld,$lh,$ld);
printf ("<table border=\"0\">\n");
for ($i=0; $i<$lh+$ld;$i=$i+16) {
printf("<tr><td>%03x</td><td>|</td>\n",$i);
for ($j=$i; $j<$i+16;$j++) {
printf("<td>");
if ($j<($lh+$ld)) {
$d=($j<$lh)?$exif_head[$j]:$exif_data[$j-$lh];
printf(" %02x",$d);
} else printf (" ");
printf("</td>");
}
printf("<td>|</td>");
for ($j=$i; $j< ($i+16);$j++) {
printf("<td>");
if ($j<($lh+$ld)) {
$d=($j<$lh)?$exif_head[$j]:$exif_data[$j-$lh];
if ($d<32 or $d>126) printf(".");
else printf ("%c",$d);
} else printf (" ");
printf("</td>");
}
printf("</tr>\n");
}
printf ("</table>");
}
function test_print_directory() {
global $dir_entries,$frame_meta_size;
printf ("<h2>Frame meta data size=%d bytes</h2>\n",$frame_meta_size);
printf ("<table border=\"1\">\n");
printf ("<tr><td>ltag</td><td>meta offset</td><td>Exif offset</td><td>length</td></tr>\n");
foreach ($dir_entries as $entry)
printf ("<tr><td>0x%x</td><td>0x%x</td><td>0x%x</td><td>0x%x</td></tr>\n",$entry["ltag"],$entry["src"],$entry["dst"],$entry["len"]);
printf ("</table>");
global $dir_entries,$frame_meta_size;
printf ("<h2>Frame meta data size=%d bytes</h2>\n",$frame_meta_size);
printf ("<table border=\"1\">\n");
printf ("<tr><td>ltag</td><td>meta offset</td><td>Exif offset</td><td>length</td></tr>\n");
foreach ($dir_entries as $entry)
printf ("<tr><td>0x%x</td><td>0x%x</td><td>0x%x</td><td>0x%x</td></tr>\n",$entry["ltag"],$entry["src"],$entry["dst"],$entry["len"]);
printf ("</table>");
}
function start_ifd($count) {
global $exif_data, $ifd_pointer;
// printf("start_ifd: ifd_pointer=0x%04x \n", $ifd_pointer);
$exif_data[$ifd_pointer++]= ($count >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $count & 0xff; // may apply & 0xff in the end to all elements
global $exif_data, $ifd_pointer;
// printf("start_ifd: ifd_pointer=0x%04x \n", $ifd_pointer);
$exif_data[$ifd_pointer++]= ($count >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $count & 0xff; // may apply & 0xff in the end to all elements
}
function finish_ifd() { // we do not have additional IFDs
global $exif_data, $ifd_pointer;
// printf("finish_ifd: ifd_pointer=0x%04x \n", $ifd_pointer);
$exif_data[$ifd_pointer++]=0;
$exif_data[$ifd_pointer++]=0;
$exif_data[$ifd_pointer++]=0;
$exif_data[$ifd_pointer++]=0;
global $exif_data, $ifd_pointer;
// printf("finish_ifd: ifd_pointer=0x%04x \n", $ifd_pointer);
$exif_data[$ifd_pointer++]=0;
$exif_data[$ifd_pointer++]=0;
$exif_data[$ifd_pointer++]=0;
$exif_data[$ifd_pointer++]=0;
}
//pass2 - building map from frame meta to Exif template
function addDirEntry($ifd_entry) {
global $dir_sequence,$dir_entries,$exif_head;
$lh=count($exif_head);
$attrs = $ifd_entry->attributes();
// var_dump($attrs);
// if (array_key_exists ( "seq" , $attrs )) {
if ($attrs["seq"]) {
// echo $attrs["seq"].;
$dir_sequence[]=((string) $attrs["seq"])+0;
$len= (integer) $ifd_entry->value_length;
$offs=$lh+(integer) $ifd_entry->value_offest;
// if (array_key_exists ( "dlen" , $attrs ))
if ($attrs["dlen"]) $len=min($len,((string) $attrs["dlen"])+0);
$dir_entries[]=array("ltag"=>((integer)$ifd_entry->ltag),"dst"=>$offs,"len"=>$len);
}
global $dir_sequence,$dir_entries,$exif_head;
$lh=count($exif_head);
$attrs = $ifd_entry->attributes();
// var_dump($attrs);
// if (array_key_exists ( "seq" , $attrs )) {
if ($attrs["seq"]) {
// echo $attrs["seq"].;
$dir_sequence[]=((string) $attrs["seq"])+0;
$len= (integer) $ifd_entry->value_length;
$offs=$lh+(integer) $ifd_entry->value_offest;
// if (array_key_exists ( "dlen" , $attrs ))
if ($attrs["dlen"]) $len=min($len,((string) $attrs["dlen"])+0);
$dir_entries[]=array("ltag"=>((integer)$ifd_entry->ltag),"dst"=>$offs,"len"=>$len);
}
}
function substitute_value($ifd_entry) {
global $SUB_IFD_offset,$GPSInfo_offset;
$attrs = $ifd_entry->attributes();
switch ($attrs["function"]) {
case "BRAND":
$ifd_entry->addChild ('value',exec("bootblocktool -x BRAND"));
break;
case "MODEL":
if (file_exists ('/var/state/APPLICATION')) {
$model= file_get_contents('/var/state/APPLICATION');
if (file_exists ('/var/state/APPLICATION_MODE')) {
$model.=' CHN'.file_get_contents('/var/state/APPLICATION_MODE');
}
} else {
$model= exec("bootblocktool -x MODEL").exec("bootblocktool -x REVISION");
}
/// $ifd_entry->addChild ('value',exec("bootblocktool -x MODEL").exec("bootblocktool -x REVISION"));
$ifd_entry->addChild ('value',$model);
break;
case "SOFTWARE":
$ifd_entry->addChild ('value',exec("ls /usr/html/docs/")); // filter
break;
case "SERIAL":
$s=exec("bootblocktool -x SERNO");
$ifd_entry->addChild ('value',substr($s,0,2).":".substr($s,2,2).":".substr($s,4,2).":".substr($s,6,2).":".substr($s,8,2).":".substr($s,10,2));
break;
case "EXIFTAG":
$ifd_entry->addChild ('value',$SUB_IFD_offset);
break;
case "GPSTAG":
$ifd_entry->addChild ('value',$GPSInfo_offset);
break;
}
global $SUB_IFD_offset,$GPSInfo_offset;
global $DeviceSNFilename, $DeviceRevisionFilename, $DeviceBrand, $DeviceModel;
$attrs = $ifd_entry->attributes();
switch ($attrs["function"]) {
case "BRAND":
$ifd_entry->addChild('value', $DeviceBrand);
break;
case "MODEL":
if (file_exists ('/var/state/APPLICATION')) {
$model= file_get_contents('/var/state/APPLICATION');
if (file_exists ('/var/state/APPLICATION_MODE')) {
$model.=' CHN'.file_get_contents('/var/state/APPLICATION_MODE');
}
} else {
$model = $DeviceModel;
}
$ifd_entry->addChild ('value',$model);
break;
case "SOFTWARE":
if (file_exists("/usr/html/docs/")) {
$ifd_entry->addChild ('value',exec("ls /usr/html/docs/")); // filter
}
break;
case "SERIAL":
$s = "";
if (file_exists($DeviceSNFilename)) {
$s = exec('cat '.$DeviceSNFilename);
}
$ifd_entry->addChild ('value',substr($s,0,2).":".substr($s,2,2).":".substr($s,4,2).":".substr($s,6,2).":".substr($s,8,2).":".substr($s,10,2));
break;
case "EXIFTAG":
$ifd_entry->addChild ('value',$SUB_IFD_offset);
break;
case "GPSTAG":
$ifd_entry->addChild ('value',$GPSInfo_offset);
break;
}
}
function process_ifd_entry($ifd_entry, $group) {
global $exif_data, $ifd_pointer, $data_pointer,$SUB_IFD_offset,$GPSInfo_offset;
$attrs = $ifd_entry->attributes();
$ifd_tag= ((string) $attrs["tag"])+0;
$ifd_format=constant("EXIF_".$attrs["format"]);
$ifd_count= $attrs["count"];
// echo "\nifd_tag=$ifd_tag, entry=";print_r($ifd_entry);
// echo "\nifd_count=$ifd_count";
// echo "\nifd_bytes:";var_dump($ifd_bytes);
if (!$ifd_count) {
if($ifd_format==EXIF_ASCII) $ifd_count=strlen($ifd_entry->value)+1;
else $ifd_count=1 ; /// may change?
}
//echo "\nifd_count=$ifd_count";
$exif_data[$ifd_pointer++]= ($ifd_tag >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $ifd_tag & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_format >> 8 ) & 0xff;
$exif_data[$ifd_pointer++]= $ifd_format & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_count >> 24) & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_count >> 16) & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_count >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $ifd_count & 0xff;
$ifd_bytes=0;
switch ($ifd_format) {
case EXIF_SHORT:
case EXIF_SSHORT: $ifd_bytes=2; break;
case EXIF_LONG:
case EXIF_SLONG: $ifd_bytes=4; break;
case EXIF_RATIONAL:
case EXIF_SRATIONAL: $ifd_bytes=8; break;
default: $ifd_bytes=1; //1,2,6,7
}
$ifd_bytes=$ifd_bytes*$ifd_count;
// now prepare ifd_data - array of bytes
switch ($ifd_format) {
case EXIF_BYTE:
case EXIF_SBYTE:
$ifd_data= array ();
foreach ($ifd_entry->value as $a) $ifd_data[]= $a & 0xff;
break;
case EXIF_ASCII:
$ifd_data= str_split($ifd_entry->value);
foreach($ifd_data as &$d) $d=ord($d);
break;
case EXIF_SHORT:
case EXIF_SSHORT:
$ifd_data= array ();
foreach ($ifd_entry->value as $a) $ifd_data=array_merge($ifd_data,array(($a >> 8) & 0xff, $a & 0xff));
break;
case EXIF_LONG:
case EXIF_SLONG:
$ifd_data= array ();
foreach ($ifd_entry->value as $a) $ifd_data=array_merge($ifd_data,array(($a >> 24) & 0xff,($a >> 16) & 0xff,($a >> 8) & 0xff, $a & 0xff));
break;
case EXIF_RATIONAL:
case EXIF_SRATIONAL:
$nom= array ();
foreach ($ifd_entry->nominator as $a) $nom[]= array(($a >> 24) & 0xff,($a >> 16) & 0xff,($a >> 8) & 0xff, $a & 0xff);
$denom= array ();
foreach ($ifd_entry->denominator as $a) $denom[]=array(($a >> 24) & 0xff,($a >> 16) & 0xff,($a >> 8) & 0xff, $a & 0xff);
$ifd_data= array ();
global $exif_data, $ifd_pointer, $data_pointer,$SUB_IFD_offset,$GPSInfo_offset;
$attrs = $ifd_entry->attributes();
$ifd_tag= ((string) $attrs["tag"])+0;
$ifd_format=constant("EXIF_".$attrs["format"]);
$ifd_count= $attrs["count"];
// echo "\nifd_tag=$ifd_tag, entry=";print_r($ifd_entry);
// echo "\nifd_count=$ifd_count";
// echo "\nifd_bytes:";var_dump($ifd_bytes);
if (!$ifd_count) {
if($ifd_format==EXIF_ASCII) $ifd_count=strlen($ifd_entry->value)+1;
else $ifd_count=1 ; /// may change?
}
//echo "\nifd_count=$ifd_count";
$exif_data[$ifd_pointer++]= ($ifd_tag >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $ifd_tag & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_format >> 8 ) & 0xff;
$exif_data[$ifd_pointer++]= $ifd_format & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_count >> 24) & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_count >> 16) & 0xff;
$exif_data[$ifd_pointer++]= ($ifd_count >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $ifd_count & 0xff;
$ifd_bytes=0;
switch ($ifd_format) {
case EXIF_SHORT:
case EXIF_SSHORT: $ifd_bytes=2; break;
case EXIF_LONG:
case EXIF_SLONG: $ifd_bytes=4; break;
case EXIF_RATIONAL:
case EXIF_SRATIONAL: $ifd_bytes=8; break;
default: $ifd_bytes=1; //1,2,6,7
}
$ifd_bytes=$ifd_bytes*$ifd_count;
// now prepare ifd_data - array of bytes
switch ($ifd_format) {
case EXIF_BYTE:
case EXIF_SBYTE:
$ifd_data= array ();
foreach ($ifd_entry->value as $a) $ifd_data[]= $a & 0xff;
break;
case EXIF_ASCII:
$ifd_data= str_split($ifd_entry->value);
foreach($ifd_data as &$d) $d=ord($d);
break;
case EXIF_SHORT:
case EXIF_SSHORT:
$ifd_data= array ();
foreach ($ifd_entry->value as $a) $ifd_data=array_merge($ifd_data,array(($a >> 8) & 0xff, $a & 0xff));
break;
case EXIF_LONG:
case EXIF_SLONG:
$ifd_data= array ();
foreach ($ifd_entry->value as $a) $ifd_data=array_merge($ifd_data,array(($a >> 24) & 0xff,($a >> 16) & 0xff,($a >> 8) & 0xff, $a & 0xff));
break;
case EXIF_RATIONAL:
case EXIF_SRATIONAL:
$nom= array ();
foreach ($ifd_entry->nominator as $a) $nom[]= array(($a >> 24) & 0xff,($a >> 16) & 0xff,($a >> 8) & 0xff, $a & 0xff);
$denom= array ();
foreach ($ifd_entry->denominator as $a) $denom[]=array(($a >> 24) & 0xff,($a >> 16) & 0xff,($a >> 8) & 0xff, $a & 0xff);
$ifd_data= array ();
/*
var_dump($nom);
echo "\n";
var_dump($denom);
echo "\n";
//exit(0);
*/
for ($i=0;$i<count($nom);$i++) {
// echo "i=$i\n";
// echo "\nnom=";var_dump($nom[$i]);
// echo "\ndenom=";var_dump($denom[$i]);
$ifd_data=array_merge($ifd_data,$nom[$i],$denom[$i]);
}
break; // rational, (un)signed
case EXIF_UNDEFINED: // undefined
$ifd_data= array_fill(0,$ifd_bytes,0); // will just fill with "0"-s
break;
}
// echo "\nifd_tag=$ifd_tag, entry=";print_r($i=$ifd_entry->value);
// echo "\nifd_data:";var_dump($ifd_data);
// echo "\nifd_bytes:";var_dump($ifd_bytes);
$ifd_data=array_pad($ifd_data,$ifd_bytes,0);
$ifd_entry->addChild ('value_length',count($ifd_data));
// if (array_key_exists ( "ltag" , $attrs )) $ltag= ((string) $attrs["ltag"])+0;
if ($attr["ltag"]) $ltag= ((string) $attrs["ltag"])+0;
else $ltag= $ifd_tag+($group<<16) ;
$ifd_entry->addChild ("ltag",$ltag );
if (count($ifd_data) <=4) {
$ifd_entry->addChild ('value_offest',$ifd_pointer);
$ifd_data= array_pad($ifd_data,-4,0); // add leading zeroes if <4 bytes
for ($i=0;$i<4;$i++) $exif_data[$ifd_pointer++]=$ifd_data[$i];
} else { //pointer, not data
$ifd_entry->addChild ('value_offest',$data_pointer);
$exif_data[$ifd_pointer++]= ($data_pointer >> 24) & 0xff;
$exif_data[$ifd_pointer++]= ($data_pointer >> 16) & 0xff;
$exif_data[$ifd_pointer++]= ($data_pointer >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $data_pointer & 0xff;
for ($i=0;$i<count($ifd_data);$i++) {
$exif_data[$data_pointer++]=$ifd_data[$i];
}
}
*/
for ($i=0;$i<count($nom);$i++) {
// echo "i=$i\n";
// echo "\nnom=";var_dump($nom[$i]);
// echo "\ndenom=";var_dump($denom[$i]);
$ifd_data=array_merge($ifd_data,$nom[$i],$denom[$i]);
}
break; // rational, (un)signed
case EXIF_UNDEFINED: // undefined
$ifd_data= array_fill(0,$ifd_bytes,0); // will just fill with "0"-s
break;
}
// echo "\nifd_tag=$ifd_tag, entry=";print_r($i=$ifd_entry->value);
// echo "\nifd_data:";var_dump($ifd_data);
// echo "\nifd_bytes:";var_dump($ifd_bytes);
$ifd_data=array_pad($ifd_data,$ifd_bytes,0);
$ifd_entry->addChild ('value_length',count($ifd_data));
// if (array_key_exists ( "ltag" , $attrs )) $ltag= ((string) $attrs["ltag"])+0;
if ($attr["ltag"]) $ltag= ((string) $attrs["ltag"])+0;
else $ltag= $ifd_tag+($group<<16) ;
$ifd_entry->addChild ("ltag",$ltag );
if (count($ifd_data) <=4) {
$ifd_entry->addChild ('value_offest',$ifd_pointer);
$ifd_data= array_pad($ifd_data,-4,0); // add leading zeroes if <4 bytes
for ($i=0;$i<4;$i++) $exif_data[$ifd_pointer++]=$ifd_data[$i];
} else { //pointer, not data
$ifd_entry->addChild ('value_offest',$data_pointer);
$exif_data[$ifd_pointer++]= ($data_pointer >> 24) & 0xff;
$exif_data[$ifd_pointer++]= ($data_pointer >> 16) & 0xff;
$exif_data[$ifd_pointer++]= ($data_pointer >> 8) & 0xff;
$exif_data[$ifd_pointer++]= $data_pointer & 0xff;
for ($i=0;$i<count($ifd_data);$i++) {
$exif_data[$data_pointer++]=$ifd_data[$i];
}
}
}
?>
imgsrv.c
View file @ a3eb9430
......@@ -289,7 +289,7 @@ int printExifXML(int exif_page, struct file_set *fset)
while (read(fd_exifdir, &dir_table_entry, sizeof(dir_table_entry)) > 0) {
switch (dir_table_entry.ltag) {
case Exif_Image_ImageDescription: indx = Exif_Image_ImageDescription_Index; break;
case Exif_Image_FrameNumber: indx = Exif_Image_FrameNumber_Index; break;
case Exif_Image_ImageNumber: indx = Exif_Image_ImageNumber_Index; break;
case Exif_Photo_DateTimeOriginal: indx = Exif_Photo_DateTimeOriginal_Index; break;
case Exif_Photo_SubSecTimeOriginal: indx = Exif_Photo_SubSecTimeOriginal_Index; break;
case Exif_Photo_ExposureTime: indx = Exif_Photo_ExposureTime_Index; break;
......@@ -349,14 +349,14 @@ int printExifXML(int exif_page, struct file_set *fset)
saferead255(fd_exif, val, exif_dir[Exif_Image_ImageDescription_Index].len);
printf("<ImageDescription>\"%s\"</ImageDescription>\n", val);
}
///Exif_Image_FrameNumber_Index 0x13
if (exif_dir[Exif_Image_FrameNumber_Index].ltag == Exif_Image_FrameNumber) { // Exif_Image_FrameNumber_Index is present in template
///Exif_Image_ImageNumber_Index 0x13
if (exif_dir[Exif_Image_ImageNumber_Index].ltag == Exif_Image_ImageNumber) { // Exif_Image_ImageNumber_Index is present in template
lseek(fd_exif,
exif_page_start + exif_dir[Exif_Image_FrameNumber_Index].dst,
exif_page_start + exif_dir[Exif_Image_ImageNumber_Index].dst,
SEEK_SET);
read(fd_exif, rational3, 4);
sprintf(val, "%ld", (long)__cpu_to_be32( rational3[0]));
printf("<FrameNumber>\"%s\"</FrameNumber>\n", val);
printf("<ImageNumber>\"%s\"</ImageNumber>\n", val);
}
///Exif_Image_Orientation_Index 0x14
......
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