function read_entry(&$result, $in, $seek, $intel, $ifd_name, $globalOffset)
{
if (feof($in)) {
// test to make sure we can still read.
$result['Errors'] = $result['Errors'] + 1;
return;
}
// 2 byte tag
$tag = bin2hex(fread($in, 2));
if ($intel == 1) {
$tag = intel2Moto($tag);
}
$tag_name = lookup_tag($tag);
// 2 byte datatype
$type = bin2hex(fread($in, 2));
if ($intel == 1) {
$type = intel2Moto($type);
}
lookup_type($type, $size);
if (strpos($tag_name, 'unknown:') !== false && strpos($type, 'error:') !== false) {
// we have an error
$result['Errors'] = $result['Errors'] + 1;
return;
}
// 4 byte number of elements
$count = bin2hex(fread($in, 4));
if ($intel == 1) {
$count = intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
// 4 byte value or pointer to value if larger than 4 bytes
$value = fread($in, 4);
if ($bytesofdata <= 4) {
// if datatype is 4 bytes or less, its the value
$data = $value;
} else {
if ($bytesofdata < 100000) {
// otherwise its a pointer to the value, so lets go get it
$value = bin2hex($value);
if ($intel == 1) {
$value = intel2Moto($value);
}
$v = fseek($seek, $globalOffset + hexdec($value));
// offsets are from TIFF header which is 12 bytes from the start of the file
if ($v == 0) {
$data = fread($seek, $bytesofdata);
} else {
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
}
}
} else {
// bytesofdata was too big, so the exif had an error
$result['Errors'] = $result['Errors'] + 1;
return;
}
}
if ($tag_name == 'MakerNote') {
// if its a maker tag, we need to parse this specially
$make = $result['IFD0']['Make'];
if ($result['VerboseOutput'] == 1) {
$result[$ifd_name]['MakerNote']['RawData'] = $data;
}
if (preg_match('/NIKON/i', $make)) {
require_once dirname(__FILE__) . '/makers/nikon.php';
parseNikon($data, $result);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (preg_match('/OLYMPUS/i', $make)) {
require_once dirname(__FILE__) . '/makers/olympus.php';
parseOlympus($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (preg_match('/Canon/i', $make)) {
require_once dirname(__FILE__) . '/makers/canon.php';
parseCanon($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (preg_match('/FUJIFILM/i', $make)) {
require_once dirname(__FILE__) . '/makers/fujifilm.php';
parseFujifilm($data, $result);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (preg_match('/SANYO/i', $make)) {
require_once dirname(__FILE__) . '/makers/sanyo.php';
parseSanyo($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (preg_match('/Panasonic/i', $make)) {
require_once dirname(__FILE__) . '/makers/panasonic.php';
parsePanasonic($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
$result[$ifd_name]['KnownMaker'] = 0;
}
}
}
}
}
}
} else {
if ($tag_name == 'GPSInfoOffset') {
require_once dirname(__FILE__) . '/makers/gps.php';
$formated_data = formatData($type, $tag, $intel, $data);
$result[$ifd_name]['GPSInfo'] = $formated_data;
parseGPS($data, $result, $formated_data, $seek, $globalOffset);
} else {
// Format the data depending on the type and tag
$formated_data = formatData($type, $tag, $intel, $data);
$result[$ifd_name][$tag_name] = $formated_data;
if ($result['VerboseOutput'] == 1) {
if ($type == 'URATIONAL' || $type == 'SRATIONAL' || $type == 'USHORT' || $type == 'SSHORT' || $type == 'ULONG' || $type == 'SLONG' || $type == 'FLOAT' || $type == 'DOUBLE') {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
}
$result[$ifd_name][$tag_name . '_Verbose']['RawData'] = $data;
$result[$ifd_name][$tag_name . '_Verbose']['Type'] = $type;
$result[$ifd_name][$tag_name . '_Verbose']['Bytes'] = $bytesofdata;
}
}
}
}
function read_entry(&$result, $in, $seek, $intel, $ifd_name, $globalOffset)
{
if (feof($in)) {
//test to make sure we can still read.
$result['Errors'] = $result['Errors'] + 1;
return;
}
//2 byte tag
$tag = bin2hex(fread($in, 2));
if ($intel == 1) {
$tag = intel2Moto($tag);
}
$tag_name = lookup_tag($tag);
//2 byte datatype
$type = bin2hex(fread($in, 2));
if ($intel == 1) {
$type = intel2Moto($type);
}
lookup_type($type, $size);
//4 byte number of elements
$count = bin2hex(fread($in, 4));
if ($intel == 1) {
$count = intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value or pointer to value if larger than 4 bytes
$value = fread($in, 4);
if ($bytesofdata <= 4) {
//if datatype is 4 bytes or less, its the value
$data = $value;
} else {
if ($bytesofdata < 100000) {
//otherwise its a pointer to the value, so lets go get it
$value = bin2hex($value);
if ($intel == 1) {
$value = intel2Moto($value);
}
$v = fseek($seek, $globalOffset + hexdec($value));
//offsets are from TIFF header which is 12 bytes from the start of the file
if ($v == 0) {
$data = fread($seek, $bytesofdata);
} else {
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
}
}
} else {
//bytesofdata was too big, so the exif had an error
$result['Errors'] = $result['Errors'] + 1;
return;
}
}
if ($tag_name == "MakerNote") {
//if its a maker tag, we need to parse this specially
$make = $result['IFD0']['Make'];
if ($result['VerboseOutput'] == 1) {
$result[$ifd_name]['MakerNote']['RawData'] = $data;
}
if (eregi("NIKON", $make)) {
require_once 'makers/nikon.php';
parseNikon($data, $result);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (eregi("OLYMPUS", $make)) {
require_once 'makers/olympus.php';
parseOlympus($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (eregi("Canon", $make)) {
require_once 'makers/canon.php';
parseCanon($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (eregi("FUJIFILM", $make)) {
require_once 'makers/fujifilm.php';
parseFujifilm($data, $result);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
if (eregi("SANYO", $make)) {
require_once 'makers/sanyo.php';
parseSanyo($data, $result, $seek, $globalOffset);
$result[$ifd_name]['KnownMaker'] = 1;
} else {
$result[$ifd_name]['KnownMaker'] = 0;
}
}
}
}
}
} else {
if ($tag_name == "GPSInfoOffset") {
require_once 'makers/gps.php';
$formated_data = formatData($type, $tag, $intel, $data);
$result[$ifd_name]['GPSInfo'] = $formated_data;
parseGPS($data, $result, $formated_data, $seek, $globalOffset);
} else {
//Format the data depending on the type and tag
$formated_data = formatData($type, $tag, $intel, $data);
$result[$ifd_name][$tag_name] = $formated_data;
if ($result['VerboseOutput'] == 1) {
if ($type == "URATIONAL" || $type == "SRATIONAL" || $type == "USHORT" || $type == "SSHORT" || $type == "ULONG" || $type == "SLONG" || $type == "FLOAT" || $type == "DOUBLE") {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
}
$result[$ifd_name][$tag_name . "_Verbose"]['RawData'] = $data;
$result[$ifd_name][$tag_name . "_Verbose"]['Type'] = $type;
$result[$ifd_name][$tag_name . "_Verbose"]['Bytes'] = $bytesofdata;
}
}
}
}