class ExifPHPExtension in Exif 8
Same name and namespace in other branches
- 8.2 src/ExifPHPExtension.php \Drupal\exif\ExifPHPExtension
- 7 ExifPHPExtension.php \Drupal\exif\ExifPHPExtension
Class ExifPHPExtension Parser implementation base d on PHP Exif extension.
@package Drupal\exif
Hierarchy
- class \Drupal\exif\ExifPHPExtension implements ExifInterface
Expanded class hierarchy of ExifPHPExtension
File
- src/
ExifPHPExtension.php, line 13
Namespace
Drupal\exifView source
class ExifPHPExtension implements ExifInterface {
private static $instance = NULL;
/**
* ExifPHPExtension constructor.
*/
private function __construct() {
}
/**
* Return the singleton.
*
* @return \Drupal\exif\ExifPHPExtension
* the singleton implementing the parser
*/
public static function getInstance() {
if (is_null(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Check if the exif php extension is installed.
*
* @return bool
* true if extension is installed.
*/
public static function checkConfiguration() {
return function_exists('exif_read_data') && function_exists('iptcparse');
}
/**
* Return drupal fields related to this extension.
*
* @inheritdoc
*/
public function getMetadataFields(array $arCckFields = []) {
$arSections = self::getMetadataSections();
foreach ($arCckFields as $drupal_field => $metadata_settings) {
$metadata_field = $metadata_settings['metadata_field'];
$ar = explode("_", $metadata_field);
if (isset($ar[0]) && (in_array($ar[0], $arSections) || $ar[0] == 'all')) {
$section = $ar[0];
unset($ar[0]);
$arCckFields[$drupal_field]['metadata_field'] = [
'section' => $section,
'tag' => implode("_", $ar),
];
}
else {
// Remove from the list a non usable description.
unset($arCckFields[$drupal_field]);
Drupal::logger('exif')
->warning(t("not able to understand exif field settings ") . $metadata_field);
}
}
return $arCckFields;
}
/**
* Return known metadata sections.
*
* @return array
* list of sections (as string)
*/
public static function getMetadataSections() {
$sections = [
'exif',
'file',
'computed',
'ifd0',
'gps',
'winxp',
'iptc',
'xmp',
];
return $sections;
}
/**
* Encode read value as UTF8 string.
*
* @param string $value
* Bytes to encode.
*
* @return string
* encoded value
*/
protected function reEncodeToUtf8($value) {
$unicode_list = unpack("v*", $value);
$result = "";
foreach ($unicode_list as $key => $value) {
if ($value != 0) {
$one_character = pack("C", $value);
$temp = mb_convert_encoding('&#' . $value . ';', 'UTF-8', 'HTML-ENTITIES');
$result .= $temp;
}
}
return $result;
}
/**
* Read all metadata tags.
*
* @param string $file
* Path to file.
* @param bool $enable_sections
* Indicate if the information is retrieve by sections or flatten.
*
* @return array
* Values by key and optionally sections.
*/
public function readMetadataTags($file, $enable_sections = TRUE) {
if (!file_exists($file)) {
return [];
}
$data1 = $this
->readExifTags($file, $enable_sections);
$data2 = $this
->readIptcTags($file, $enable_sections);
$data = array_merge($data1, $data2);
if (is_array($data)) {
foreach ($data as $section => $section_data) {
$section_data = $this
->reformat($section_data);
$data[$section] = $section_data;
}
}
return $data;
}
/**
* Read Exif Information from a file.
*
* @param string $file
* Path to file.
* @param bool $enable_sections
* Indicate if the information is retrieve by sections or flatten.
*
* @return array
* Values by key and optionally sections.
*/
public function readExifTags($file, $enable_sections = TRUE) {
$ar_supported_types = [
'jpg',
'jpeg',
];
if (!in_array(strtolower($this
->getFileType($file)), $ar_supported_types)) {
return [];
}
$exif = [];
try {
$exif = @exif_read_data($file, 0, $enable_sections);
} catch (\Exception $e) {
// Logs a notice.
Drupal::logger('exif')
->warning(t("Error while reading EXIF tags from image."), $e);
}
$arSmallExif = [];
foreach ((array) $exif as $key1 => $value1) {
if (is_array($value1)) {
foreach ((array) $value1 as $key3 => $value3) {
$value[strtolower($key3)] = $value3;
}
}
else {
$value = $value1;
}
$arSmallExif[strtolower($key1)] = $value;
}
return $arSmallExif;
}
/**
* Get extension from a path.
*
* @param string $file
* Path to file.
*
* @return string
* the extension.
*/
private function getFileType($file) {
$ar = explode('.', $file);
$ending = $ar[count($ar) - 1];
return $ending;
}
const IPTC_KEYWORD_KEY = "2#025";
/**
* Read IPTC Information from a file.
*
* @param string $file
* Path to file.
* @param bool $enable_sections
* Indicate if the information is retrieve by sections or flatten.
*
* @return array
* Values by key and optionally sections.
*/
private function readIptcTags($file, $enable_sections) {
$humanReadableKey = $this
->getHumanReadableIptcDescriptions();
$infoImage = [];
getimagesize($file, $infoImage);
$iptc = empty($infoImage["APP13"]) ? [] : iptcparse($infoImage["APP13"]);
$arSmallIPTC = [];
if (is_array($iptc)) {
if (array_key_exists(ExifPHPExtension::IPTC_KEYWORD_KEY, $iptc)) {
$iptc[ExifPHPExtension::IPTC_KEYWORD_KEY] = $this
->checkKeywordString($iptc[ExifPHPExtension::IPTC_KEYWORD_KEY]);
$iptc[ExifPHPExtension::IPTC_KEYWORD_KEY] = $this
->removeEmptyIptcKeywords($iptc[ExifPHPExtension::IPTC_KEYWORD_KEY]);
}
foreach ($iptc as $key => $value) {
if (count($value) == 1) {
$resultTag = $value[0];
}
else {
$resultTag = $value;
}
if (array_key_exists($key, $humanReadableKey)) {
$humanKey = $humanReadableKey[$key];
$arSmallIPTC[$humanKey] = $resultTag;
}
else {
$arSmallIPTC[$key] = $resultTag;
}
}
}
if ($enable_sections) {
return [
'iptc' => $arSmallIPTC,
];
}
else {
return $arSmallIPTC;
}
}
/**
* Just some little helper function to get the iptc fields.
*
* @return array
* Map of IPTC key with the associated description.
*/
public function getHumanReadableIptcDescriptions() {
return [
"2#202" => "object_data_preview_data",
"2#201" => "object_data_preview_file_format_version",
"2#200" => "object_data_preview_file_format",
"2#154" => "audio_outcue",
"2#153" => "audio_duration",
"2#152" => "audio_sampling_resolution",
"2#151" => "audio_sampling_rate",
"2#150" => "audio_type",
"2#135" => "language_identifier",
"2#131" => "image_orientation",
"2#130" => "image_type",
"2#125" => "rasterized_caption",
"2#122" => "writer",
"2#120" => "caption",
"2#118" => "contact",
"2#116" => "copyright_notice",
"2#115" => "source",
"2#110" => "credit",
"2#105" => "headline",
"2#103" => "original_transmission_reference",
"2#101" => "country_name",
"2#100" => "country_code",
"2#095" => "state",
"2#092" => "sublocation",
"2#090" => "city",
"2#085" => "by_line_title",
"2#080" => "by_line",
"2#075" => "object_cycle",
"2#070" => "program_version",
"2#065" => "originating_program",
"2#063" => "digital_creation_time",
"2#062" => "digital_creation_date",
"2#060" => "creation_time",
"2#055" => "creation_date",
"2#050" => "reference_number",
"2#047" => "reference_date",
"2#045" => "reference_service",
"2#042" => "action_advised",
"2#040" => "special_instruction",
"2#038" => "expiration_time",
"2#037" => "expiration_date",
"2#035" => "release_time",
"2#030" => "release_date",
"2#027" => "content_location_name",
"2#026" => "content_location_code",
"2#025" => "keywords",
"2#022" => "fixture_identifier",
"2#020" => "supplemental_category",
"2#015" => "category",
"2#010" => "subject_reference",
"2#008" => "editorial_update",
"2#007" => "edit_status",
"2#005" => "object_name",
"2#004" => "object_attribute_reference",
"2#003" => "object_type_reference",
"2#000" => "record_version",
"1#090" => "envelope_character_set",
];
}
/**
* Helper function to split keyword separated by ';' in array of keywords.
*
* @param string $keyword
* String with all keywords.
*
* @return array
* the array of keywords.
*/
private function checkKeywordString($keyword) {
return strpos($keyword[0], ';') !== FALSE ? explode(';', $keyword[0]) : $keyword;
}
/**
* Helper function to remove empty IPTC keywords.
*
* @param array $data
* List of keywords.
*
* @return array
* List of keywords.
*/
private function removeEmptyIptcKeywords(array $data) {
if (!in_array('', $data, TRUE)) {
return $data;
}
foreach ($data as $key => $value) {
if (empty($value)) {
unset($data[$key]);
}
}
return $data;
}
/**
* Helper function to reformat fields where required.
*
* Some values (lat/lon) break down into structures, not strings.
* Dates should be parsed nicely.
*
* @param array $data
* Section data containing all keyword woth associated value.
*
* @return array
* section data containing all keyword woth associated value.
*/
private function reformat(array $data) {
// Make the key lowercase as field names must be.
$data = array_change_key_case($data, CASE_LOWER);
foreach ($data as $key => &$value) {
if (is_array($value)) {
$value = array_change_key_case($value, CASE_LOWER);
switch ($key) {
// GPS values.
case 'gps_latitude':
case 'gps_longitude':
case 'gpslatitude':
case 'gpslongitude':
$value = $this
->exifReformatGps($value, $data[$key . 'ref']);
break;
}
}
else {
if (is_string($value)) {
$value = trim($value);
}
if (!Unicode::validateUtf8($value)) {
$value = utf8_encode($value);
}
switch ($key) {
// String values.
case 'usercomment':
case 'title':
case 'comment':
case 'author':
case 'subject':
if ($this
->startswith($value, 'UNICODE')) {
$value = substr($value, 8);
}
$value = $this
->reEncodeToUtf8($value);
break;
// Date values.
case 'filedatetime':
$value = date('c', $value);
break;
case 'datetimeoriginal':
case 'datetime':
case 'datetimedigitized':
// In case we get a datefield,
// we need to reformat it to the ISO 8601 standard,
// which will look something like 2004-02-12T15:19:21.
$date_time = explode(" ", $value);
$date_time[0] = str_replace(":", "-", $date_time[0]);
// TODO
// if (variable_get('exif_granularity', 0) == 1) {
// $date_time[1] = "00:00:00";.
// }.
$value = implode("T", $date_time);
break;
// GPS values.
case 'gpsaltitude':
case 'gpsimgdirection':
if (!isset($data[$key . 'ref'])) {
$data[$key . 'ref'] = 0;
}
$value = $this
->exifReformatGps($value, $data[$key . 'ref']);
break;
// Flash values.
case 'componentsconfiguration':
case 'compression':
case 'contrast':
case 'exposuremode':
case 'exposureprogram':
case 'flash':
case 'focalplaneresolutionunit':
case 'gaincontrol':
case 'lightsource':
case 'meteringmode':
case 'orientation':
case 'resolutionunit':
case 'saturation':
case 'scenecapturetype':
case 'sensingmethod':
case 'sensitivitytype':
case 'sharpness':
case 'subjectdistancerange':
case 'whitebalance':
$human_descriptions = $this
->getHumanReadableDescriptions()[$key];
if (isset($human_descriptions[$value])) {
$value = $human_descriptions[$value];
}
break;
// Exposure values.
case 'exposuretime':
if (strpos($value, '/') !== FALSE) {
$value = $this
->normaliseFraction($value) . 's';
}
break;
// Focal Length values.
case 'focallength':
if (strpos($value, '/') !== FALSE) {
$value = $this
->normaliseFraction($value) . 'mm';
}
break;
}
}
}
return $data;
}
/**
* Helper function to change GPS co-ords into decimals.
*
* @param mixed $value
* Raw value as array or string.
* @param string $ref
* Direction as a char (S/N/E/W)
*
* @return float
* Calculated decimal value
*/
private function exifReformatGps($value, $ref) {
if (!is_array($value)) {
$value = [
$value,
];
}
$dec = 0;
$granularity = 0;
foreach ($value as $element) {
$parts = explode('/', $element);
$dec += (double) ((double) $parts[0] / (double) $parts[1] / pow(60, $granularity));
$granularity++;
}
if ($ref == 'S' || $ref == 'W') {
$dec *= -1;
}
return $dec;
}
/**
* Helper function to know if a substring start a string.
*
* Used internally and in help page (so should be public).
*
* @param string $hay
* The string where we look for.
* @param string $needle
* The string to look for.
*
* @return bool
* if condition is valid.
*/
public function startswith($hay, $needle) {
return substr($hay, 0, strlen($needle)) === $needle;
}
/**
* Convert machine tag values to their human-readable descriptions.
*
* Sources:
* http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html.
*/
public function getHumanReadableDescriptions() {
$machineToHuman = [];
$machineToHuman['componentsconfiguration'] = [
'0' => t('-'),
'1' => t('Y'),
'2' => t('Cb'),
'3' => t('Cr'),
'4' => t('R'),
'5' => t('G'),
'6' => t('B'),
];
$machineToHuman['compression'] = [
'1' => t('Uncompressed'),
'2' => t('CCITT 1D'),
'3' => t('T4/Group 3 Fax'),
'4' => t('T6/Group 4 Fax'),
'5' => t('LZW'),
'6' => t('JPEG (old-style)'),
'7' => t('JPEG'),
'8' => t('Adobe Deflate'),
'9' => t('JBIG B&W'),
'10' => t('JBIG Color'),
'99' => t('JPEG'),
'262' => t('Kodak 262'),
'32766' => t('Next'),
'32767' => t('Sony ARW Compressed'),
'32769' => t('Packed RAW'),
'32770' => t('Samsung SRW Compressed'),
'32771' => t('CCIRLEW'),
'32773' => t('PackBits'),
'32809' => t('Thunderscan'),
'32867' => t('Kodak KDC Compressed'),
'32895' => t('IT8CTPAD'),
'32896' => t('IT8LW'),
'32897' => t('IT8MP'),
'32898' => t('IT8BL'),
'32908' => t('PixarFilm'),
'32909' => t('PixarLog'),
'32946' => t('Deflate'),
'32947' => t('DCS'),
'34661' => t('JBIG'),
'34676' => t('SGILog'),
'34677' => t('SGILog24'),
'34712' => t('JPEG 2000'),
'34713' => t('Nikon NEF Compressed'),
'34715' => t('JBIG2 TIFF FX'),
'34718' => t('Microsoft Document Imaging (MDI) Binary Level Codec'),
'34719' => t('Microsoft Document Imaging (MDI) Progressive Transform Codec'),
'34720' => t('Microsoft Document Imaging (MDI) Vector'),
'65000' => t('Kodak DCR Compressed'),
'65535' => t('Pentax PEF Compressed'),
];
$machineToHuman['contrast'] = [
'0' => t('Normal'),
'1' => t('Low'),
'2' => t('High'),
];
$machineToHuman['exposuremode'] = [
'0' => t('Auto'),
'1' => t('Manual'),
'2' => t('Auto bracket'),
];
// (the value of 9 is not standard EXIF, but is used by the Canon EOS 7D)
$machineToHuman['exposureprogram'] = [
'0' => t('Not Defined'),
'1' => t('Manual'),
'2' => t('Program AE'),
'3' => t('Aperture-priority AE'),
'4' => t('Shutter speed priority AE'),
'5' => t('Creative (Slow speed)'),
'6' => t('Action (High speed)'),
'7' => t('Portrait'),
'8' => t('Landscape'),
'9' => t('Bulb'),
];
$machineToHuman['flash'] = [
'0' => t('Flash did not fire'),
'1' => t('Flash fired'),
'5' => t('Strobe return light not detected'),
'7' => t('Strobe return light detected'),
'9' => t('Flash fired, compulsory flash mode'),
'13' => t('Flash fired, compulsory flash mode, return light not detected'),
'15' => t('Flash fired, compulsory flash mode, return light detected'),
'16' => t('Flash did not fire, compulsory flash mode'),
'24' => t('Flash did not fire, auto mode'),
'25' => t('Flash fired, auto mode'),
'29' => t('Flash fired, auto mode, return light not detected'),
'31' => t('Flash fired, auto mode, return light detected'),
'32' => t('No flash function'),
'65' => t('Flash fired, red-eye reduction mode'),
'69' => t('Flash fired, red-eye reduction mode, return light not detected'),
'71' => t('Flash fired, red-eye reduction mode, return light detected'),
'73' => t('Flash fired, compulsory flash mode, red-eye reduction mode'),
'77' => t('Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected'),
'79' => t('Flash fired, compulsory flash mode, red-eye reduction mode, return light detected'),
'89' => t('Flash fired, auto mode, red-eye reduction mode'),
'93' => t('Flash fired, auto mode, return light not detected, red-eye reduction mode'),
'95' => t('Flash fired, auto mode, return light detected, red-eye reduction mode'),
];
// (values 1, 4 and 5 are not standard EXIF)
$machineToHuman['focalplaneresolutionunit'] = [
'1' => t('None'),
'2' => t('inches'),
'3' => t('cm'),
'4' => t('mm'),
'5' => t('um'),
];
$machineToHuman['gaincontrol'] = [
'0' => t('None'),
'1' => t('Low gain up'),
'2' => t('High gain up'),
'3' => t('Low gain down'),
'4' => t('High gain down'),
];
$machineToHuman['lightsource'] = [
'0' => t('Unknown'),
'1' => t('Daylight'),
'2' => t('Fluorescent'),
'3' => t('Tungsten (Incandescent)'),
'4' => t('Flash'),
'9' => t('Fine Weather'),
'10' => t('Cloudy'),
'11' => t('Shade'),
'12' => t('Daylight Fluorescent'),
'13' => t('Day White Fluorescent'),
'14' => t('Cool White Fluorescent'),
'15' => t('White Fluorescent'),
'16' => t('Warm White Fluorescent'),
'17' => t('Standard Light A'),
'18' => t('Standard Light B'),
'19' => t('Standard Light C'),
'20' => t('D55'),
'21' => t('D65'),
'22' => t('D75'),
'23' => t('D50'),
'24' => t('ISO Studio Tungsten'),
'255' => t('Other'),
];
$machineToHuman['meteringmode'] = [
'0' => t('Unknown'),
'1' => t('Average'),
'2' => t('Center-weighted average'),
'3' => t('Spot'),
'4' => t('Multi-spot'),
'5' => t('Multi-segment'),
'6' => t('Partial'),
'255' => t('Other'),
];
$machineToHuman['orientation'] = [
'1' => t('Horizontal (normal)'),
'2' => t('Mirror horizontal'),
'3' => t('Rotate 180'),
'4' => t('Mirror vertical'),
'5' => t('Mirror horizontal and rotate 270 CW'),
'6' => t('Rotate 90 CW'),
'7' => t('Mirror horizontal and rotate 90 CW'),
'8' => t('Rotate 270 CW'),
];
// (the value 1 is not standard EXIF)
$machineToHuman['resolutionunit'] = [
'1' => t('None'),
'2' => t('inches'),
'3' => t('cm'),
];
$machineToHuman['saturation'] = [
'0' => t('Normal'),
'1' => t('Low'),
'2' => t('High'),
];
$machineToHuman['scenecapturetype'] = [
'0' => t('Standard'),
'1' => t('Landscape'),
'2' => t('Portrait'),
'3' => t('Night'),
];
// (values 1 and 6 are not standard EXIF)
$machineToHuman['sensingmethod'] = [
'1' => t('Monochrome area'),
'2' => t('One-chip color area'),
'3' => t('Two-chip color area'),
'4' => t('Three-chip color area'),
'5' => t('Color sequential area'),
'6' => t('Monochrome linear'),
'7' => t('Trilinear'),
'8' => t('Color sequential linear'),
];
// (applies to EXIF:ISO tag)
$machineToHuman['sensitivitytype'] = [
'0' => t('Unknown'),
'1' => t('Standard Output Sensitivity'),
'2' => t('Recommended Exposure Index'),
'3' => t('ISO Speed'),
'4' => t('Standard Output Sensitivity and Recommended Exposure Index'),
'5' => t('Standard Output Sensitivity and ISO Speed'),
'6' => t('Recommended Exposure Index and ISO Speed'),
'7' => t('Standard Output Sensitivity, Recommended Exposure Index and ISO Speed'),
];
$machineToHuman['sharpness'] = [
'0' => t('Normal'),
'1' => t('Soft'),
'2' => t('Hard'),
];
$machineToHuman['subjectdistancerange'] = [
'0' => t('Unknown'),
'1' => t('Macro'),
'2' => t('Close'),
'3' => t('Distant'),
];
$machineToHuman['uncompressed'] = [
'0' => t('No'),
'1' => t('Yes'),
];
$machineToHuman['whitebalance'] = [
'0' => t('Auto'),
'1' => t('Manual'),
];
return $machineToHuman;
}
/**
* Normalise fractions.
*/
private function normaliseFraction($fraction) {
$parts = explode('/', $fraction);
$top = $parts[0];
$bottom = $parts[1];
if ($top > $bottom) {
// Value > 1.
if ($top % $bottom == 0) {
$value = $top / $bottom;
}
else {
$value = round($top / $bottom, 2);
}
}
else {
if ($top == $bottom) {
// Value = 1.
$value = '1';
}
else {
// Value < 1.
if ($top == 1) {
$value = '1/' . $bottom;
}
else {
if ($top != 0) {
$value = '1/' . round($bottom / $top, 0);
}
else {
$value = '0';
}
}
}
}
return $value;
}
/**
* List of known metadata keys.
*
* Metadata combine EXIF and IPTC keys.
*
* @return array
* Metadata Keys.
*/
public function getFieldKeys() {
$exif_keys_temp = $this
->getHumanReadableExifKeys();
$exif_keys = [];
foreach ($exif_keys_temp as $value) {
$exif_keys[$value] = $value;
}
$iptc_keys_temp = array_values($this
->getHumanReadableIptcDescriptions());
$iptc_keys = [];
foreach ($iptc_keys_temp as $value) {
$current_value = "iptc_" . $value;
$iptc_keys[$current_value] = $current_value;
}
$fields = array_merge($exif_keys, $iptc_keys);
ksort($fields);
return $fields;
}
/**
* List of known EXIF keys.
*
* @return array
* Exif keys
*/
public function getHumanReadableExifKeys() {
return [
"file_filename",
"file_filedatetime",
"file_filesize",
"file_filetype",
"file_mimetype",
"file_sectionsfound",
"computed_filename",
"computed_filedatetime",
"computed_filesize",
"computed_filetype",
"computed_mimetype",
"computed_sectionsfound",
"computed_html",
"computed_height",
"computed_width",
"computed_iscolor",
"computed_copyright",
"computed_byteordermotorola",
"computed_ccdwidth",
"computed_aperturefnumber",
"computed_usercomment",
"computed_usercommentencoding",
"computed_thumbnail.filetype",
"computed_thumbnail.mimetype",
"ifd0_filename",
"ifd0_filedatetime",
"ifd0_filesize",
"ifd0_filetype",
"ifd0_mimetype",
"ifd0_sectionsfound",
"ifd0_html",
"ifd0_height",
"ifd0_width",
"ifd0_iscolor",
"ifd0_byteordermotorola",
"ifd0_ccdwidth",
"ifd0_aperturefnumber",
"ifd0_usercomment",
"ifd0_usercommentencoding",
"ifd0_thumbnail.filetype",
"ifd0_thumbnail.mimetype",
"ifd0_imagedescription",
"ifd0_make",
"ifd0_model",
"ifd0_orientation",
"ifd0_xresolution",
"ifd0_yresolution",
"ifd0_resolutionunit",
"ifd0_software",
"ifd0_datetime",
"ifd0_artist",
"ifd0_ycbcrpositioning",
"ifd0_title",
"ifd0_comments",
"ifd0_author",
"ifd0_subject",
"ifd0_exif_ifd_pointer",
"ifd0_gps_ifd_pointer",
"thumbnail_filename",
"thumbnail_filedatetime",
"thumbnail_filesize",
"thumbnail_filetype",
"thumbnail_mimetype",
"thumbnail_sectionsfound",
"thumbnail_html",
"thumbnail_height",
"thumbnail_width",
"thumbnail_iscolor",
"thumbnail_byteordermotorola",
"thumbnail_ccdwidth",
"thumbnail_aperturefnumber",
"thumbnail_usercomment",
"thumbnail_usercommentencoding",
"thumbnail_thumbnail.filetype",
"thumbnail_thumbnail.mimetype",
"thumbnail_imagedescription",
"thumbnail_make",
"thumbnail_model",
"thumbnail_orientation",
"thumbnail_xresolution",
"thumbnail_yresolution",
"thumbnail_resolutionunit",
"thumbnail_software",
"thumbnail_datetime",
"thumbnail_artist",
"thumbnail_ycbcrpositioning",
"thumbnail_title",
"thumbnail_comments",
"thumbnail_author",
"thumbnail_subject",
"thumbnail_exif_ifd_pointer",
"thumbnail_gps_ifd_pointer",
"thumbnail_compression",
"thumbnail_jpeginterchangeformat",
"thumbnail_jpeginterchangeformatlength",
"exif_filename",
"exif_filedatetime",
"exif_filesize",
"exif_filetype",
"exif_mimetype",
"exif_sectionsfound",
"exif_html",
"exif_height",
"exif_width",
"exif_iscolor",
"exif_byteordermotorola",
"exif_ccdwidth",
"exif_aperturefnumber",
"exif_usercomment",
"exif_usercommentencoding",
"exif_thumbnail.filetype",
"exif_thumbnail.mimetype",
"exif_imagedescription",
"exif_make",
"exif_model",
"exif_lens",
"exif_lensid",
"exif_orientation",
"exif_xresolution",
"exif_yresolution",
"exif_resolutionunit",
"exif_software",
"exif_datetime",
"exif_artist",
"exif_ycbcrpositioning",
"exif_title",
"exif_comments",
"exif_author",
"exif_subject",
"exif_exif_ifd_pointer",
"exif_gps_ifd_pointer",
"exif_compression",
"exif_jpeginterchangeformat",
"exif_jpeginterchangeformatlength",
"exif_exposuretime",
"exif_fnumber",
"exif_exposureprogram",
"exif_isospeedratings",
"exif_exifversion",
"exif_datetimeoriginal",
"exif_datetimedigitized",
"exif_componentsconfiguration",
"exif_shutterspeedvalue",
"exif_aperturevalue",
"exif_exposurebiasvalue",
"exif_meteringmode",
"exif_flash",
"exif_focallength",
"exif_flashpixversion",
"exif_colorspace",
"exif_exifimagewidth",
"exif_exifimagelength",
"exif_interoperabilityoffset",
"exif_focalplanexresolution",
"exif_focalplaneyresolution",
"exif_focalplaneresolutionunit",
"exif_imageuniqueid",
"gps_filename",
"gps_filedatetime",
"gps_filesize",
"gps_filetype",
"gps_mimetype",
"gps_sectionsfound",
"gps_html",
"gps_height",
"gps_width",
"gps_iscolor",
"gps_byteordermotorola",
"gps_ccdwidth",
"gps_aperturefnumber",
"gps_usercomment",
"gps_usercommentencoding",
"gps_thumbnail.filetype",
"gps_thumbnail.mimetype",
"gps_imagedescription",
"gps_make",
"gps_model",
"gps_orientation",
"gps_xresolution",
"gps_yresolution",
"gps_resolutionunit",
"gps_software",
"gps_datetime",
"gps_artist",
"gps_ycbcrpositioning",
"gps_title",
"gps_comments",
"gps_author",
"gps_subject",
"gps_exif_ifd_pointer",
"gps_gps_ifd_pointer",
"gps_compression",
"gps_jpeginterchangeformat",
"gps_jpeginterchangeformatlength",
"gps_exposuretime",
"gps_fnumber",
"gps_exposureprogram",
"gps_isospeedratings",
"gps_exifversion",
"gps_datetimeoriginal",
"gps_datetimedigitized",
"gps_componentsconfiguration",
"gps_shutterspeedvalue",
"gps_aperturevalue",
"gps_exposurebiasvalue",
"gps_meteringmode",
"gps_flash",
"gps_focallength",
"gps_flashpixversion",
"gps_colorspace",
"gps_exifimagewidth",
"gps_exifimagelength",
"gps_interoperabilityoffset",
"gps_gpsimgdirectionref",
"gps_gpsimgdirection",
"gps_focalplanexresolution",
"gps_focalplaneyresolution",
"gps_focalplaneresolutionunit",
"gps_imageuniqueid",
"gps_gpsversion",
"gps_gpslatituderef",
"gps_gpslatitude",
"gps_gpslongituderef",
"gps_gpslongitude",
"gps_gpsaltituderef",
"gps_gpsaltitude",
"interop_filename",
"interop_filedatetime",
"interop_filesize",
"interop_filetype",
"interop_mimetype",
"interop_sectionsfound",
"interop_html",
"interop_height",
"interop_width",
"interop_iscolor",
"interop_byteordermotorola",
"interop_ccdwidth",
"interop_aperturefnumber",
"interop_usercomment",
"interop_usercommentencoding",
"interop_thumbnail.filetype",
"interop_thumbnail.mimetype",
"interop_imagedescription",
"interop_make",
"interop_model",
"interop_orientation",
"interop_xresolution",
"interop_yresolution",
"interop_resolutionunit",
"interop_software",
"interop_datetime",
"interop_artist",
"interop_ycbcrpositioning",
"interop_title",
"interop_comments",
"interop_author",
"interop_subject",
"interop_exif_ifd_pointer",
"interop_gps_ifd_pointer",
"interop_compression",
"interop_jpeginterchangeformat",
"interop_jpeginterchangeformatlength",
"interop_exposuretime",
"interop_fnumber",
"interop_exposureprogram",
"interop_isospeedratings",
"interop_exifversion",
"interop_datetimeoriginal",
"interop_datetimedigitized",
"interop_componentsconfiguration",
"interop_shutterspeedvalue",
"interop_aperturevalue",
"interop_exposurebiasvalue",
"interop_meteringmode",
"interop_flash",
"interop_focallength",
"interop_flashpixversion",
"interop_colorspace",
"interop_exifimagewidth",
"interop_exifimagelength",
"interop_interoperabilityoffset",
"interop_focalplanexresolution",
"interop_focalplaneyresolution",
"interop_focalplaneresolutionunit",
"interop_imageuniqueid",
"interop_gpsversion",
"interop_gpslatituderef",
"interop_gpslatitude",
"interop_gpslongituderef",
"interop_gpslongitude",
"interop_gpsaltituderef",
"interop_gpsaltitude",
"interop_interoperabilityindex",
"interop_interoperabilityversion",
"winxp_filename",
"winxp_filedatetime",
"winxp_filesize",
"winxp_filetype",
"winxp_mimetype",
"winxp_sectionsfound",
"winxp_html",
"winxp_height",
"winxp_width",
"winxp_iscolor",
"winxp_byteordermotorola",
"winxp_ccdwidth",
"winxp_aperturefnumber",
"winxp_usercomment",
"winxp_usercommentencoding",
"winxp_thumbnail.filetype",
"winxp_thumbnail.mimetype",
"winxp_imagedescription",
"winxp_make",
"winxp_model",
"winxp_orientation",
"winxp_xresolution",
"winxp_yresolution",
"winxp_resolutionunit",
"winxp_software",
"winxp_datetime",
"winxp_artist",
"winxp_ycbcrpositioning",
"winxp_title",
"winxp_comments",
"winxp_author",
"winxp_subject",
"winxp_exif_ifd_pointer",
"winxp_gps_ifd_pointer",
"winxp_compression",
"winxp_jpeginterchangeformat",
"winxp_jpeginterchangeformatlength",
"winxp_exposuretime",
"winxp_fnumber",
"winxp_exposureprogram",
"winxp_isospeedratings",
"winxp_exifversion",
"winxp_datetimeoriginal",
"winxp_datetimedigitized",
"winxp_componentsconfiguration",
"winxp_shutterspeedvalue",
"winxp_aperturevalue",
"winxp_exposurebiasvalue",
"winxp_meteringmode",
"winxp_flash",
"winxp_focallength",
"winxp_flashpixversion",
"winxp_colorspace",
"winxp_exifimagewidth",
"winxp_exifimagelength",
"winxp_interoperabilityoffset",
"winxp_focalplanexresolution",
"winxp_focalplaneyresolution",
"winxp_focalplaneresolutionunit",
"winxp_imageuniqueid",
"winxp_gpsversion",
"winxp_gpslatituderef",
"winxp_gpslatitude",
"winxp_gpslongituderef",
"winxp_gpslongitude",
"winxp_gpsaltituderef",
"winxp_gpsaltitude",
"winxp_interoperabilityindex",
"winxp_interoperabilityversion",
];
}
}Members
Name |
Modifiers | Type | Description | Overrides |
|---|---|---|---|---|
|
ExifPHPExtension:: |
private static | property | ||
|
ExifPHPExtension:: |
public static | function | Check if the exif php extension is installed. | |
|
ExifPHPExtension:: |
private | function | Helper function to split keyword separated by ';' in array of keywords. | |
|
ExifPHPExtension:: |
private | function | Helper function to change GPS co-ords into decimals. | |
|
ExifPHPExtension:: |
public | function |
List of known metadata keys. Overrides ExifInterface:: |
|
|
ExifPHPExtension:: |
private | function | Get extension from a path. | |
|
ExifPHPExtension:: |
public | function | Convert machine tag values to their human-readable descriptions. | |
|
ExifPHPExtension:: |
public | function | List of known EXIF keys. | |
|
ExifPHPExtension:: |
public | function | Just some little helper function to get the iptc fields. | |
|
ExifPHPExtension:: |
public static | function | Return the singleton. | |
|
ExifPHPExtension:: |
public | function |
Return drupal fields related to this extension. Overrides ExifInterface:: |
|
|
ExifPHPExtension:: |
public static | function | Return known metadata sections. | |
|
ExifPHPExtension:: |
constant | |||
|
ExifPHPExtension:: |
private | function | Normalise fractions. | |
|
ExifPHPExtension:: |
public | function | Read Exif Information from a file. | |
|
ExifPHPExtension:: |
private | function | Read IPTC Information from a file. | |
|
ExifPHPExtension:: |
public | function |
Read all metadata tags. Overrides ExifInterface:: |
|
|
ExifPHPExtension:: |
protected | function | Encode read value as UTF8 string. | |
|
ExifPHPExtension:: |
private | function | Helper function to reformat fields where required. | |
|
ExifPHPExtension:: |
private | function | Helper function to remove empty IPTC keywords. | |
|
ExifPHPExtension:: |
public | function | Helper function to know if a substring start a string. | |
|
ExifPHPExtension:: |
private | function | ExifPHPExtension constructor. |