521 lines
28 KiB
PHP
521 lines
28 KiB
PHP
<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <info@getid3.org> //
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// available at https://github.com/JamesHeinrich/getID3 //
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// or https://www.getid3.org //
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// or http://getid3.sourceforge.net //
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// see readme.txt for more details //
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/////////////////////////////////////////////////////////////////
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// //
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// module.archive.tiff.php //
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// module for analyzing TIFF files //
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// dependencies: NONE //
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// ///
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/////////////////////////////////////////////////////////////////
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if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
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exit;
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}
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class getid3_tiff extends getid3_handler
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{
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/**
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* @return bool
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*/
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public function Analyze() {
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$info = &$this->getid3->info;
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$this->fseek($info['avdataoffset']);
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$TIFFheader = $this->fread(4);
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switch (substr($TIFFheader, 0, 2)) {
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case 'II':
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$info['tiff']['byte_order'] = 'Intel';
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break;
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case 'MM':
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$info['tiff']['byte_order'] = 'Motorola';
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break;
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default:
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$this->error('Invalid TIFF byte order identifier ('.substr($TIFFheader, 0, 2).') at offset '.$info['avdataoffset']);
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return false;
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}
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$info['fileformat'] = 'tiff';
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$info['video']['dataformat'] = 'tiff';
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$info['video']['lossless'] = true;
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$info['tiff']['ifd'] = array();
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$CurrentIFD = array();
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$FieldTypeByteLength = array(1=>1, 2=>1, 3=>2, 4=>4, 5=>8);
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$nextIFDoffset = $this->TIFFendian2Int($this->fread(4), $info['tiff']['byte_order']);
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while ($nextIFDoffset > 0) {
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$CurrentIFD['offset'] = $nextIFDoffset;
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$this->fseek($info['avdataoffset'] + $nextIFDoffset);
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$CurrentIFD['fieldcount'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
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for ($i = 0; $i < $CurrentIFD['fieldcount']; $i++) {
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$CurrentIFD['fields'][$i]['raw']['tag'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
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$CurrentIFD['fields'][$i]['raw']['type'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
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$CurrentIFD['fields'][$i]['raw']['length'] = $this->TIFFendian2Int($this->fread(4), $info['tiff']['byte_order']);
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$CurrentIFD['fields'][$i]['raw']['valoff'] = $this->fread(4); // To save time and space the Value Offset contains the Value instead of pointing to the Value if and only if the Value fits into 4 bytes. If the Value is shorter than 4 bytes, it is left-justified within the 4-byte Value Offset, i.e., stored in the lowernumbered bytes. Whether the Value fits within 4 bytes is determined by the Type and Count of the field.
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$CurrentIFD['fields'][$i]['raw']['tag_name'] = $this->TIFFcommentName($CurrentIFD['fields'][$i]['raw']['tag']);
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switch ($CurrentIFD['fields'][$i]['raw']['type']) {
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case 1: // BYTE An 8-bit unsigned integer.
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if ($CurrentIFD['fields'][$i]['raw']['length'] <= 4) {
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$CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int(substr($CurrentIFD['fields'][$i]['raw']['valoff'], 0, 1), $info['tiff']['byte_order']);
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} else {
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$CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
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}
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break;
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case 2: // ASCII 8-bit bytes that store ASCII codes; the last byte must be null.
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if ($CurrentIFD['fields'][$i]['raw']['length'] <= 4) {
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$CurrentIFD['fields'][$i]['value'] = substr($CurrentIFD['fields'][$i]['raw']['valoff'], 3);
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} else {
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$CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
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}
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break;
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case 3: // SHORT A 16-bit (2-byte) unsigned integer.
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if ($CurrentIFD['fields'][$i]['raw']['length'] <= 2) {
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$CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int(substr($CurrentIFD['fields'][$i]['raw']['valoff'], 0, 2), $info['tiff']['byte_order']);
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} else {
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$CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
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}
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break;
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case 4: // LONG A 32-bit (4-byte) unsigned integer.
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if ($CurrentIFD['fields'][$i]['raw']['length'] <= 4) {
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$CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
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} else {
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$CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
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}
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break;
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case 5: // RATIONAL Two LONG_s: the first represents the numerator of a fraction, the second the denominator.
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case 7: // UNDEFINED An 8-bit byte that may contain anything, depending on the definition of the field.
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$CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
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break;
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// Warning: It is possible that other TIFF field types will be added in the future. Readers should skip over fields containing an unexpected field type.
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// In TIFF 6.0, some new field types have been defined:
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// These new field types are also governed by the byte order (II or MM) in the TIFF header.
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case 6: // SBYTE An 8-bit signed (twos-complement) integer.
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case 8: // SSHORT A 16-bit (2-byte) signed (twos-complement) integer.
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case 9: // SLONG A 32-bit (4-byte) signed (twos-complement) integer.
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case 10: // SRATIONAL Two SLONGs: the first represents the numerator of a fraction, the second the denominator.
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case 11: // FLOAT Single precision (4-byte) IEEE format
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case 12: // DOUBLE Double precision (8-byte) IEEE format
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default:
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$this->warning('unhandled IFD field type '.$CurrentIFD['fields'][$i]['raw']['type'].' for IFD entry '.$i);
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break;
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}
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}
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$info['tiff']['ifd'][] = $CurrentIFD;
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$CurrentIFD = array();
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$nextIFDoffset = $this->TIFFendian2Int($this->fread(4), $info['tiff']['byte_order']);
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}
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foreach ($info['tiff']['ifd'] as $IFDid => $IFDarray) {
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if(!isset($IFDarray['fields'])) {
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continue;
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}
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foreach ($IFDarray['fields'] as $key => $fieldarray) {
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switch ($fieldarray['raw']['tag']) {
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case 256: // ImageWidth
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case 257: // ImageLength
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case 258: // BitsPerSample
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case 259: // Compression
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if (!isset($fieldarray['value'])) {
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$this->fseek($fieldarray['offset']);
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$info['tiff']['ifd'][$IFDid]['fields'][$key]['raw']['data'] = $this->fread($fieldarray['raw']['length'] * $FieldTypeByteLength[$fieldarray['raw']['type']]);
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}
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break;
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case 270: // ImageDescription
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case 271: // Make
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case 272: // Model
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case 305: // Software
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case 306: // DateTime
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case 315: // Artist
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case 316: // HostComputer
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if (isset($fieldarray['value'])) {
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$info['tiff']['ifd'][$IFDid]['fields'][$key]['raw']['data'] = $fieldarray['value'];
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} else {
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$this->fseek($fieldarray['offset']);
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$info['tiff']['ifd'][$IFDid]['fields'][$key]['raw']['data'] = $this->fread($fieldarray['raw']['length'] * $FieldTypeByteLength[$fieldarray['raw']['type']]);
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}
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break;
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case 700:
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$XMPmagic = '<?xpacket';
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$this->fseek($fieldarray['offset']);
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$xmpkey = (isset($info['tiff']['XMP']) ? count($info['tiff']['XMP']) : 0);
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$info['tiff']['XMP'][$xmpkey]['raw'] = $this->fread($fieldarray['raw']['length']);
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if (substr($info['tiff']['XMP'][$xmpkey]['raw'], 0, strlen($XMPmagic)) != $XMPmagic) {
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$this->warning('did not find expected XMP data at offset '.$fieldarray['offset']);
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unset($info['tiff']['XMP'][$xmpkey]['raw']);
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}
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break;
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}
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switch ($fieldarray['raw']['tag']) {
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case 256: // ImageWidth
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$info['video']['resolution_x'] = $fieldarray['value'];
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break;
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case 257: // ImageLength
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$info['video']['resolution_y'] = $fieldarray['value'];
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break;
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case 258: // BitsPerSample
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if (isset($fieldarray['value'])) {
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$info['video']['bits_per_sample'] = $fieldarray['value'];
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} else {
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$info['video']['bits_per_sample'] = 0;
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for ($i = 0; $i < $fieldarray['raw']['length']; $i++) {
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$info['video']['bits_per_sample'] += $this->TIFFendian2Int(substr($info['tiff']['ifd'][$IFDid]['fields'][$key]['raw']['data'], $i * $FieldTypeByteLength[$fieldarray['raw']['type']], $FieldTypeByteLength[$fieldarray['raw']['type']]), $info['tiff']['byte_order']);
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}
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}
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break;
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case 259: // Compression
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$info['video']['codec'] = $this->TIFFcompressionMethod($fieldarray['value']);
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break;
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case 270: // ImageDescription
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case 271: // Make
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case 272: // Model
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case 305: // Software
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case 306: // DateTime
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case 315: // Artist
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case 316: // HostComputer
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$TIFFcommentName = strtolower($fieldarray['raw']['tag_name']);
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if (isset($info['tiff']['comments'][$TIFFcommentName])) {
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$info['tiff']['comments'][$TIFFcommentName][] = $info['tiff']['ifd'][$IFDid]['fields'][$key]['raw']['data'];
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} else {
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$info['tiff']['comments'][$TIFFcommentName] = array($info['tiff']['ifd'][$IFDid]['fields'][$key]['raw']['data']);
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}
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break;
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default:
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break;
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}
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}
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}
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return true;
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}
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/**
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* @param string $bytestring
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* @param string $byteorder
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*
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* @return int|float|false
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*/
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public function TIFFendian2Int($bytestring, $byteorder) {
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if ($byteorder == 'Intel') {
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return getid3_lib::LittleEndian2Int($bytestring);
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} elseif ($byteorder == 'Motorola') {
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return getid3_lib::BigEndian2Int($bytestring);
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}
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return false;
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}
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/**
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* @param int $id
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*
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* @return string
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*/
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public function TIFFcompressionMethod($id) {
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// https://en.wikipedia.org/wiki/TIFF#TIFF_Compression_Tag
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static $TIFFcompressionMethod = array();
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if (empty($TIFFcompressionMethod)) {
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$TIFFcompressionMethod = array(
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0x0001 => 'Uncompressed',
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0x0002 => 'Huffman',
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0x0003 => 'CCITT T.4',
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0x0004 => 'CCITT T.6',
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0x0005 => 'LZW',
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0x0006 => 'JPEG-old',
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0x0007 => 'JPEG',
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0x0008 => 'deflate',
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0x0009 => 'JBIG ITU-T T.85',
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0x000A => 'JBIG ITU-T T.43',
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0x7FFE => 'NeXT RLE 2-bit',
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0x8005 => 'PackBits',
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0x8029 => 'ThunderScan RLE 4-bit',
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0x807F => 'RasterPadding',
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0x8080 => 'RLE-LW',
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0x8081 => 'RLE-CT',
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0x8082 => 'RLE-BL',
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0x80B2 => 'deflate-PK',
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0x80B3 => 'Kodak-DCS',
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0x8765 => 'JBIG',
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0x8798 => 'JPEG2000',
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0x8799 => 'Nikon NEF',
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0x879B => 'JBIG2',
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);
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}
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return (isset($TIFFcompressionMethod[$id]) ? $TIFFcompressionMethod[$id] : 'unknown/invalid ('.$id.')');
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}
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/**
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* @param int $id
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*
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* @return string
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*/
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public function TIFFcommentName($id) {
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// https://www.awaresystems.be/imaging/tiff/tifftags.html
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static $TIFFcommentName = array();
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if (empty($TIFFcommentName)) {
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$TIFFcommentName = array(
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254 => 'NewSubfileType',
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255 => 'SubfileType',
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256 => 'ImageWidth',
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257 => 'ImageLength',
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258 => 'BitsPerSample',
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259 => 'Compression',
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262 => 'PhotometricInterpretation',
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263 => 'Threshholding',
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264 => 'CellWidth',
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265 => 'CellLength',
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266 => 'FillOrder',
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269 => 'DocumentName',
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270 => 'ImageDescription',
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271 => 'Make',
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272 => 'Model',
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273 => 'StripOffsets',
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274 => 'Orientation',
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277 => 'SamplesPerPixel',
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278 => 'RowsPerStrip',
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279 => 'StripByteCounts',
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280 => 'MinSampleValue',
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281 => 'MaxSampleValue',
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282 => 'XResolution',
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283 => 'YResolution',
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284 => 'PlanarConfiguration',
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285 => 'PageName',
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286 => 'XPosition',
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287 => 'YPosition',
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288 => 'FreeOffsets',
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289 => 'FreeByteCounts',
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290 => 'GrayResponseUnit',
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291 => 'GrayResponseCurve',
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292 => 'T4Options',
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293 => 'T6Options',
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296 => 'ResolutionUnit',
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297 => 'PageNumber',
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301 => 'TransferFunction',
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305 => 'Software',
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306 => 'DateTime',
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315 => 'Artist',
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316 => 'HostComputer',
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317 => 'Predictor',
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318 => 'WhitePoint',
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319 => 'PrimaryChromaticities',
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320 => 'ColorMap',
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321 => 'HalftoneHints',
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322 => 'TileWidth',
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323 => 'TileLength',
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324 => 'TileOffsets',
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325 => 'TileByteCounts',
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326 => 'BadFaxLines',
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327 => 'CleanFaxData',
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328 => 'ConsecutiveBadFaxLines',
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330 => 'SubIFDs',
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332 => 'InkSet',
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333 => 'InkNames',
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334 => 'NumberOfInks',
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336 => 'DotRange',
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337 => 'TargetPrinter',
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338 => 'ExtraSamples',
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339 => 'SampleFormat',
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340 => 'SMinSampleValue',
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341 => 'SMaxSampleValue',
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342 => 'TransferRange',
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343 => 'ClipPath',
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344 => 'XClipPathUnits',
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345 => 'YClipPathUnits',
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346 => 'Indexed',
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347 => 'JPEGTables',
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351 => 'OPIProxy',
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400 => 'GlobalParametersIFD',
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401 => 'ProfileType',
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402 => 'FaxProfile',
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403 => 'CodingMethods',
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404 => 'VersionYear',
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405 => 'ModeNumber',
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433 => 'Decode',
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434 => 'DefaultImageColor',
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512 => 'JPEGProc',
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513 => 'JPEGInterchangeFormat',
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514 => 'JPEGInterchangeFormatLngth',
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515 => 'JPEGRestartInterval',
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517 => 'JPEGLosslessPredictors',
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518 => 'JPEGPointTransforms',
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519 => 'JPEGQTables',
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520 => 'JPEGDCTables',
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521 => 'JPEGACTables',
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529 => 'YCbCrCoefficients',
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530 => 'YCbCrSubSampling',
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531 => 'YCbCrPositioning',
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532 => 'ReferenceBlackWhite',
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559 => 'StripRowCounts',
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700 => 'XMP',
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32781 => 'ImageID',
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33432 => 'Copyright',
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34732 => 'ImageLayer',
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// Private Tags - https://www.awaresystems.be/imaging/tiff/tifftags/private.html
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32932 => 'Wang Annotation', // Annotation data, as used in 'Imaging for Windows'.
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33445 => 'MD FileTag', // Specifies the pixel data format encoding in the Molecular Dynamics GEL file format.
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33446 => 'MD ScalePixel', // Specifies a scale factor in the Molecular Dynamics GEL file format.
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33447 => 'MD ColorTable', // Used to specify the conversion from 16bit to 8bit in the Molecular Dynamics GEL file format.
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33448 => 'MD LabName', // Name of the lab that scanned this file, as used in the Molecular Dynamics GEL file format.
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33449 => 'MD SampleInfo', // Information about the sample, as used in the Molecular Dynamics GEL file format.
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33450 => 'MD PrepDate', // Date the sample was prepared, as used in the Molecular Dynamics GEL file format.
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33451 => 'MD PrepTime', // Time the sample was prepared, as used in the Molecular Dynamics GEL file format.
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33452 => 'MD FileUnits', // Units for data in this file, as used in the Molecular Dynamics GEL file format.
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33550 => 'ModelPixelScaleTag', // Used in interchangeable GeoTIFF files.
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33723 => 'IPTC', // IPTC (International Press Telecommunications Council) metadata.
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33918 => 'INGR Packet Data Tag', // Intergraph Application specific storage.
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33919 => 'INGR Flag Registers', // Intergraph Application specific flags.
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33920 => 'IrasB Transformation Matrix', // Originally part of Intergraph's GeoTIFF tags, but likely understood by IrasB only.
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33922 => 'ModelTiepointTag', // Originally part of Intergraph's GeoTIFF tags, but now used in interchangeable GeoTIFF files.
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34264 => 'ModelTransformationTag', // Used in interchangeable GeoTIFF files.
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34377 => 'Photoshop', // Collection of Photoshop 'Image Resource Blocks'.
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34665 => 'Exif IFD', // A pointer to the Exif IFD.
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34675 => 'ICC Profile', // ICC profile data.
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34735 => 'GeoKeyDirectoryTag', // Used in interchangeable GeoTIFF files.
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34736 => 'GeoDoubleParamsTag', // Used in interchangeable GeoTIFF files.
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34737 => 'GeoAsciiParamsTag', // Used in interchangeable GeoTIFF files.
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34853 => 'GPS IFD', // A pointer to the Exif-related GPS Info IFD.
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34908 => 'HylaFAX FaxRecvParams', // Used by HylaFAX.
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34909 => 'HylaFAX FaxSubAddress', // Used by HylaFAX.
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34910 => 'HylaFAX FaxRecvTime', // Used by HylaFAX.
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37724 => 'ImageSourceData', // Used by Adobe Photoshop.
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40965 => 'Interoperability IFD', // A pointer to the Exif-related Interoperability IFD.
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42112 => 'GDAL_METADATA', // Used by the GDAL library, holds an XML list of name=value 'metadata' values about the image as a whole, and about specific samples.
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42113 => 'GDAL_NODATA', // Used by the GDAL library, contains an ASCII encoded nodata or background pixel value.
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50215 => 'Oce Scanjob Description', // Used in the Oce scanning process.
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50216 => 'Oce Application Selector', // Used in the Oce scanning process.
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50217 => 'Oce Identification Number', // Used in the Oce scanning process.
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50218 => 'Oce ImageLogic Characteristics', // Used in the Oce scanning process.
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50706 => 'DNGVersion', // Used in IFD 0 of DNG files.
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50707 => 'DNGBackwardVersion', // Used in IFD 0 of DNG files.
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50708 => 'UniqueCameraModel', // Used in IFD 0 of DNG files.
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50709 => 'LocalizedCameraModel', // Used in IFD 0 of DNG files.
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50710 => 'CFAPlaneColor', // Used in Raw IFD of DNG files.
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50711 => 'CFALayout', // Used in Raw IFD of DNG files.
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50712 => 'LinearizationTable', // Used in Raw IFD of DNG files.
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50713 => 'BlackLevelRepeatDim', // Used in Raw IFD of DNG files.
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50714 => 'BlackLevel', // Used in Raw IFD of DNG files.
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50715 => 'BlackLevelDeltaH', // Used in Raw IFD of DNG files.
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|
50716 => 'BlackLevelDeltaV', // Used in Raw IFD of DNG files.
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50717 => 'WhiteLevel', // Used in Raw IFD of DNG files.
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|
50718 => 'DefaultScale', // Used in Raw IFD of DNG files.
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50719 => 'DefaultCropOrigin', // Used in Raw IFD of DNG files.
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50720 => 'DefaultCropSize', // Used in Raw IFD of DNG files.
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50721 => 'ColorMatrix1', // Used in IFD 0 of DNG files.
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50722 => 'ColorMatrix2', // Used in IFD 0 of DNG files.
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50723 => 'CameraCalibration1', // Used in IFD 0 of DNG files.
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50724 => 'CameraCalibration2', // Used in IFD 0 of DNG files.
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50725 => 'ReductionMatrix1', // Used in IFD 0 of DNG files.
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50726 => 'ReductionMatrix2', // Used in IFD 0 of DNG files.
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50727 => 'AnalogBalance', // Used in IFD 0 of DNG files.
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50728 => 'AsShotNeutral', // Used in IFD 0 of DNG files.
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|
50729 => 'AsShotWhiteXY', // Used in IFD 0 of DNG files.
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50730 => 'BaselineExposure', // Used in IFD 0 of DNG files.
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|
50731 => 'BaselineNoise', // Used in IFD 0 of DNG files.
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50732 => 'BaselineSharpness', // Used in IFD 0 of DNG files.
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|
50733 => 'BayerGreenSplit', // Used in Raw IFD of DNG files.
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50734 => 'LinearResponseLimit', // Used in IFD 0 of DNG files.
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50735 => 'CameraSerialNumber', // Used in IFD 0 of DNG files.
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50736 => 'LensInfo', // Used in IFD 0 of DNG files.
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50737 => 'ChromaBlurRadius', // Used in Raw IFD of DNG files.
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|
50738 => 'AntiAliasStrength', // Used in Raw IFD of DNG files.
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|
50740 => 'DNGPrivateData', // Used in IFD 0 of DNG files.
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50741 => 'MakerNoteSafety', // Used in IFD 0 of DNG files.
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|
50778 => 'CalibrationIlluminant1', // Used in IFD 0 of DNG files.
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|
50779 => 'CalibrationIlluminant2', // Used in IFD 0 of DNG files.
|
|
50780 => 'BestQualityScale', // Used in Raw IFD of DNG files.
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|
50784 => 'Alias Layer Metadata', // Alias Sketchbook Pro layer usage description.
|
|
50908 => 'TIFF_RSID', // This private tag is used in a GEOTIFF standard by DGIWG.
|
|
50909 => 'GEO_METADATA', // This private tag is used in a GEOTIFF standard by DGIWG.
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|
|
|
// EXIF tags - https://www.awaresystems.be/imaging/tiff/tifftags/privateifd/exif.html
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|
33434 => 'ExposureTime', // Exposure time, given in seconds.
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|
33437 => 'FNumber', // The F number.
|
|
34850 => 'ExposureProgram', // The class of the program used by the camera to set exposure when the picture is taken.
|
|
34852 => 'SpectralSensitivity', // Indicates the spectral sensitivity of each channel of the camera used.
|
|
34855 => 'ISOSpeedRatings', // Indicates the ISO Speed and ISO Latitude of the camera or input device as specified in ISO 12232.
|
|
34856 => 'OECF', // Indicates the Opto-Electric Conversion Function (OECF) specified in ISO 14524.
|
|
36864 => 'ExifVersion', // The version of the supported Exif standard.
|
|
36867 => 'DateTimeOriginal', // The date and time when the original image data was generated.
|
|
36868 => 'DateTimeDigitized', // The date and time when the image was stored as digital data.
|
|
37121 => 'ComponentsConfiguration', // Specific to compressed data; specifies the channels and complements PhotometricInterpretation
|
|
37122 => 'CompressedBitsPerPixel', // Specific to compressed data; states the compressed bits per pixel.
|
|
37377 => 'ShutterSpeedValue', // Shutter speed.
|
|
37378 => 'ApertureValue', // The lens aperture.
|
|
37379 => 'BrightnessValue', // The value of brightness.
|
|
37380 => 'ExposureBiasValue', // The exposure bias.
|
|
37381 => 'MaxApertureValue', // The smallest F number of the lens.
|
|
37382 => 'SubjectDistance', // The distance to the subject, given in meters.
|
|
37383 => 'MeteringMode', // The metering mode.
|
|
37384 => 'LightSource', // The kind of light source.
|
|
37385 => 'Flash', // Indicates the status of flash when the image was shot.
|
|
37386 => 'FocalLength', // The actual focal length of the lens, in mm.
|
|
37396 => 'SubjectArea', // Indicates the location and area of the main subject in the overall scene.
|
|
37500 => 'MakerNote', // Manufacturer specific information.
|
|
37510 => 'UserComment', // Keywords or comments on the image; complements ImageDescription.
|
|
37520 => 'SubsecTime', // A tag used to record fractions of seconds for the DateTime tag.
|
|
37521 => 'SubsecTimeOriginal', // A tag used to record fractions of seconds for the DateTimeOriginal tag.
|
|
37522 => 'SubsecTimeDigitized', // A tag used to record fractions of seconds for the DateTimeDigitized tag.
|
|
40960 => 'FlashpixVersion', // The Flashpix format version supported by a FPXR file.
|
|
40961 => 'ColorSpace', // The color space information tag is always recorded as the color space specifier.
|
|
40962 => 'PixelXDimension', // Specific to compressed data; the valid width of the meaningful image.
|
|
40963 => 'PixelYDimension', // Specific to compressed data; the valid height of the meaningful image.
|
|
40964 => 'RelatedSoundFile', // Used to record the name of an audio file related to the image data.
|
|
41483 => 'FlashEnergy', // Indicates the strobe energy at the time the image is captured, as measured in Beam Candle Power Seconds
|
|
41484 => 'SpatialFrequencyResponse', // Records the camera or input device spatial frequency table and SFR values in the direction of image width, image height, and diagonal direction, as specified in ISO 12233.
|
|
41486 => 'FocalPlaneXResolution', // Indicates the number of pixels in the image width (X) direction per FocalPlaneResolutionUnit on the camera focal plane.
|
|
41487 => 'FocalPlaneYResolution', // Indicates the number of pixels in the image height (Y) direction per FocalPlaneResolutionUnit on the camera focal plane.
|
|
41488 => 'FocalPlaneResolutionUnit', // Indicates the unit for measuring FocalPlaneXResolution and FocalPlaneYResolution.
|
|
41492 => 'SubjectLocation', // Indicates the location of the main subject in the scene.
|
|
41493 => 'ExposureIndex', // Indicates the exposure index selected on the camera or input device at the time the image is captured.
|
|
41495 => 'SensingMethod', // Indicates the image sensor type on the camera or input device.
|
|
41728 => 'FileSource', // Indicates the image source.
|
|
41729 => 'SceneType', // Indicates the type of scene.
|
|
41730 => 'CFAPattern', // Indicates the color filter array (CFA) geometric pattern of the image sensor when a one-chip color area sensor is used.
|
|
41985 => 'CustomRendered', // Indicates the use of special processing on image data, such as rendering geared to output.
|
|
41986 => 'ExposureMode', // Indicates the exposure mode set when the image was shot.
|
|
41987 => 'WhiteBalance', // Indicates the white balance mode set when the image was shot.
|
|
41988 => 'DigitalZoomRatio', // Indicates the digital zoom ratio when the image was shot.
|
|
41989 => 'FocalLengthIn35mmFilm', // Indicates the equivalent focal length assuming a 35mm film camera, in mm.
|
|
41990 => 'SceneCaptureType', // Indicates the type of scene that was shot.
|
|
41991 => 'GainControl', // Indicates the degree of overall image gain adjustment.
|
|
41992 => 'Contrast', // Indicates the direction of contrast processing applied by the camera when the image was shot.
|
|
41993 => 'Saturation', // Indicates the direction of saturation processing applied by the camera when the image was shot.
|
|
41994 => 'Sharpness', // Indicates the direction of sharpness processing applied by the camera when the image was shot.
|
|
41995 => 'DeviceSettingDescription', // This tag indicates information on the picture-taking conditions of a particular camera model.
|
|
41996 => 'SubjectDistanceRange', // Indicates the distance to the subject.
|
|
42016 => 'ImageUniqueID', // Indicates an identifier assigned uniquely to each image.
|
|
);
|
|
}
|
|
return (isset($TIFFcommentName[$id]) ? $TIFFcommentName[$id] : 'unknown/invalid ('.$id.')');
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|
}
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|
|
|
|
|
}
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