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Metadata.php
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Metadata.php
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<?php
/**
* Metadata.php - Image file metadata handing
*
* @project Holiday\Metadata
* @version 1.2
* @author Claude Diderich (cdiderich@cdsp.photo)
* @copyright (c) 2022 by Claude Diderich
* @license https://opensource.org/licenses/mit MIT
*
* @see https://exiftool.org/TagNames/EXIF.html
*/
namespace Holiday;
use \Holiday\Metadata\Iptc;
use \Holiday\Metadata\Xmp;
use \Holiday\Metadata\Exif;
use \Holiday\Metadata\XmpDocument;
use \Holiday\Metadata\Exception;
class Metadata {
public const VERSION = '1.2.0';
/** Fielt types */
public const TYPE_INVALID = 0;
public const TYPE_STR = 1;
public const TYPE_INT = 2;
public const TYPE_FLOAT = 3;
public const TYPE_ARY = 4;
/** File specific fields: read only */
public const FILE_NAME = 001; /** String: Filename */
public const FILE_EXT = 002; /** String: File extension */
public const FILE_SIZE = 003; /** Int: File size */
public const FILE_DATE = 004; /** Int: Last modification date */
/** IPTC/XMP fields: read/write */
public const FIELD_ID_WRITE_FIRST = 100; /** First field identifier that can be modified */
public const FIELD_ID_WRITE_LAST = 132; /** Last field identifier that can be modified */
public const AUTHOR = 101; /** String: Creator (name of photographer) */
public const PHOTOGRAPHER = 101; /** - String: Creator (name of photographer) */
public const AUTHOR_TITLE = 102; /** String: Creator's job title */
public const PHOTOGRAPHER_TITLE = 102; /** - String: Creator's job title */
public const CAPTION = 103; /** String: Description/Caption */
public const CAPTION_WRITER = 104; /** String: Description writer */
public const CATEGORY = 105; /** String: Category - Max 3 characters */
public const CITY = 106; /** String: City */
public const COPYRIGHT = 107; /** String: Copyright notice */
public const COUNTRY = 108; /** String: Country name */
public const COUNTRY_CODE = 109; /** String: ISO country code*/
public const CREDIT = 110; /** String: Credit Line */
public const EDIT_STATUS = 111; /** String: Edit Status - Max 64 characters */
public const EVENT = 112; /** String: Event identifier */
public const GENRE = 113; /** Array: Genre */
public const HEADLINE = 114; /** String: Headline */
public const INSTRUCTIONS = 115; /** String: Instructions */
public const KEYWORDS = 116; /** Array: Keywords */
public const LOCATION = 117; /** String: Location */
public const OBJECT = 118; /** String: Object name (Title)*/
public const ORG_CODE = 119; /** Array: Code of Organization in image */
public const NAT = 119; /** - Array: Nationalities */
public const ORG_NAME = 120; /** Array: Name of Organization in image */
public const ORG = 120; /** - Array: Organizations/Teams in image */
public const PERSON = 121; /** Array: Person shown in image */
public const PEOPLE = 121; /** - Array: Person shown in image */
public const PERSONALITY = 121; /** - Array: Person shown in image (Getty terminology) */
public const PRIORITY = 122; /** Int: Urgency - 1 numeric character */
public const RATING = 123; /** Int: Numeric image rating, -1 (rejected), 0..5 */
public const SCENES = 124; /** Array: Scene codes*/
public const SOURCE = 125; /** String: Source */
public const STATE = 126; /** String: Providence/State */
public const SUBJECT_CODE = 127; /** Array: Subject code */
public const SUPP_CATEGORY_A = 128; /** String: Supplemental Category 1 */
public const SUPP_CATEGORY_B = 129; /** String: Supplemental Category 2 */
public const SUPP_CATEGORY_C = 130; /** String: Supplemental Category 3 */
public const TRANSFER_REF = 131; /** String: Original Transmission Reference - Max 32 characters */
public const USAGE_TERMS = 132; /** String: Rights Usage Terms */
/** IPTC/XMP fiels: read only */
public const CREATED_DATETIME = 201; /** Int: Timestamp when photo was created */
/** Image data fields: read only **/
public const IMG_APERTURE = 301; /** Float: Aperture */
public const IMG_APERTURE_FMT = 302; /** String: Aperture (f/X) */
public const IMG_CAMERA_MAKE = 303; /** String: Camera brand */
public const IMG_CAMERA_MODEL = 304; /** String: Camera model */
public const IMG_CAMERA_SERIAL = 305; /** String: Camera serial number */
public const IMG_COLOR_SPACE_FMT = 306; /** String: Color space */
public const IMG_EXPOSURE = 307; /** Array: Exposure */
public const IMG_EXPOSURE_FMT = 308; /** String: Exposure (1/X second(s))*/
public const IMG_EXPOSURE_MODE_FMT = 309; /** String: Exposure mode */
public const IMG_EXPOSURE_PGM_FMT = 310; /** String: Exposure setting */
public const IMG_FLASH = 311; /** Int: Flash used */
public const IMG_FLASH_FMT = 312; /** String: Flash used (Flash | No flash)*/
public const IMG_FOCAL_LENGTH = 313; /** Int: Focal length */
public const IMG_FOCAL_LENGTH_FMT = 314; /** String: Focal length (X mm) */
public const IMG_HEIGHT = 315; /** Int: Image height */
public const IMG_ISO = 316; /** Int: ISO */
public const IMG_LENS_MAKE = 317; /** String: Lens brand */
public const IMG_LENS_MODEL = 318; /** String: Lens name */
public const IMG_LENS_SERIAL = 319; /** String: Lens serial number */
public const IMG_METERING_MODE_FMT = 320; /** String: Merering model */
public const IMG_ORIENTATION = 321; /** Int: Orientation */
public const IMG_RESOLUTION = 322; /** Int: Image resolution, in resolution unit */
public const IMG_RESOLUTION_FMT = 323; /** String: Image resolution, in resolution unit */
public const IMG_RESOLUTION_UNIT = 324; /** Int: Resolution unit (1, 3=cm / 2=inch) */
public const IMG_SIZE_FMT = 325; /** String: Formatted image size ( W x H px - X x Y cm (x MB) */
public const IMG_SOFTWARE = 326; /** String: Software used */
public const IMG_TYPE = 327; /** Int: Image type (see imagetypes() for public constants) */
public const IMG_TYPE_FMT = 328; /** String: Image type (jpeg) */
public const IMG_WIDTH = 329; /** Int: Image width */
/** Orientation encoding: IMG_ORIENTATION */
public const IMG_ORI_VERTICAL = 1;
public const IMG_ORI_HORIZONTAL = 2;
public const IMG_ORI_SQUARE = 3;
public const IMG_ORI_UNKNOWN = -1;
/** Languages (non exchaustive) */
public const LANG_ALL = 'x-all'; /** Proxy public constand including all languages */
public const LANG_DEFAULT = 'x-default'; /** Default language: English */
public const LANG_EN = 'en-us'; /** Language: English */
public const LANG_DE = 'de-de'; /** Language: German */
public const LANG_FR = 'fr-fr'; /** Language: French */
/** Private variables */
protected bool $data_read; /** Has data been loaded/read */
protected bool $read_only; /** Data has benn read in read-only mode, disabling writing back */
protected array $data; /** Source agnostic data */
protected Metadata\Jpeg $jpeg; /** Jpeg object */
/**
* Consturctor
*/
public function __construct()
{
$this->data_read = false; $this->read_only = true; $this->data = [];
$this->jpeg = new Metadata\Jpeg();
}
/**
* Destrutor
*/
public function __desctruct()
{
}
/**
* Read IPTC, XMP, and EXIF metadata from file and make then available in a transparent way
*
* @param string $filename Filename to read metadata from
* @param bool $extend Extend IPTC keyword data into XMP specific fields, e.g. Event:, Scene:, Genre:,
* @param bool $read_only Read JPG data in read-only model
* @throw Exception
*/
public function read(string $filename, bool $extend = false, bool $read_only = false): void
{
// Re-initialize data
$this->data_read = false; $this->read_only = $read_only; $this->data = [];
// Get file specific fields
if(!file_exists($filename)) throw new Exception(_('File not found'), Exception::FILE_NOT_FOUND, $filename);
// Read and set file specific data
clearstatcache();
$pathinfo = pathinfo($filename);
$this->setRW(self::FILE_NAME, $pathinfo['basename']);
$this->setRW(self::FILE_EXT, $pathinfo['extension']);
$this->setRW(self::FILE_SIZE, filesize($filename));
$this->setRW(self::FILE_DATE, filemtime($filename));
// Read JPG data
$this->jpeg->read($filename, read_only: $this->read_only);
// Import data (in decreasing order of relevance)
$this->importIptc();
$this->importXmp();
$this->importExif();
// Extend fields
if($extend) $this->extendFields();
$this->data_read = true;
}
/**
* Write IPTC and XMP metadata back to the file
* Note: If no XMP metadata was read, no XMP metadata will be written, even if XMP specific fields have been
* populated
*
* @param string $filename Filename to which to write metadata the metadta
* @throw Exception
*/
public function write(string $filename): void
{
if(!$this->data_read)
throw new Exception(_('No image and metadata previously read'), Exception::DATA_NOT_FOUND);
if($this->read_only)
throw new Exception(_('Cannot write file because data was read in read-only mode'), Exception::DATA_NOT_FOUND);
// Export data
$this->exportIptc();
$this->exportXmp();
$this->exportExif();
// Save data
$this->jpeg->write($filename);
}
/**
* Paste existing IPTC and XMP metadata to new file, which must exist
*
* @param string $filename Filename to which to write current metadata
* @throw Exception
*/
public function paste(string $filename): void
{
if(!$this->data_read)
throw new Exception(_('No image and metadata previously read'), Exception::DATA_NOT_FOUND);
// Get file specific fields
if(!file_exists($filename))
throw new Exception(_('File to paste metadata to not found'), Exception::FILE_NOT_FOUND, $filename);
// Save metadata
$orig_data = $this->data;
// Read new file
$this->read($filename);
// Restore metadata
$this->data = $orig_data;
// Save new file
$this->write($filename);
}
/**
* Return data associated with a given field or 'false', if not value can be found
*
* @param int $field_id Field identifier
* @param string|false $lang Language of value set (if language is supported by value)
* @return string|int|float|array|false Field value
* @throw Exception
*/
public function get(int $field_id, string|false $lang = false): string|int|float|array|false
{
if(self::fieldType($field_id) === self::TYPE_INVALID)
throw new Exception(_('Invalid field identifier specified'), Exception::INVALID_FIELD_ID, $field_id);
if(self::isLang($field_id)) return self::getLang($field_id, $lang);
if(isset($this->data[$field_id])) return $this->data[$field_id];
return false;
}
/**
* Save data associated with a given field identifier
*
* @param int $field_id Field identifier
* @param string|int|float|array|false $field_value Field value
* @param string|false $lang Language of value set (if language is supported by value)
* @throw Exception
*/
public function set(int $field_id, string|int|float|array|false $field_value, string|false $lang = false): void
{
if($field_id < self::FIELD_ID_WRITE_FIRST || $field_id > self::FIELD_ID_WRITE_LAST)
throw new Exception(_('Field is not writable'), Exception::INVALID_FIELD_WRITE, $field_id);
$this->setRW($field_id, $field_value, $lang);
}
/**
* Save data associated with a given field identifier, even for fields that are read-only
*
* @access private
* @param int $field_id Field identifier
* @param string|int|float|array|false $field_value Field value
* @param string|false $lang Language of value set (if language is supported by value)
* @throw Exception
*/
private function setRW(int $field_id, string|int|float|array|false $field_value, string|false $lang = false): void
{
if(self::fieldType($field_id) === self::TYPE_INVALID)
throw new Exception(_('Invalid field identifier specified'), Exception::INVALID_FIELD_ID, $field_id);
if(self::isLang($field_id)) { self::setLang($field_id, $field_value, $lang); return; }
if(!self::isValidFieldType($field_id, $field_value) &&
!(self::fieldType($field_id) === self::TYPE_ARY && !is_array($field_value)) && $field_value !== false)
throw new Exception(_('Invalid type of field value identifier specified'), Exception::INVALID_FIELD_ID,
$field_id);
// Setting field to false is identical to dropping field
if($field_value === false) { $this->drop($field_id, $field_value, $lang); return; }
// Add/update field value
if(self::fieldType($field_id) === self::TYPE_ARY) {
if(is_array($field_value)) {
// Replace all values
$this->drop($field_id, false, $lang);
foreach($field_value as $field_subvalue) $this->data[$field_id][] = $field_subvalue;
}
else {
if(isset($this->data[$field_id])) {
// If field type is array and field value is not, add/update the value to the array
if(!in_array($field_value, $this->data[$field_id], strict: true))
$this->data[$field_id][] = $field_value;
}
else {
$this->data[$field_id][] = $field_value;
}
}
}
else {
$this->data[$field_id] = $field_value;
}
}
/**
* Drop all data
*
* @param string|false $lang Language of value set (if language is supported by value)
* @throw Exception
*/
public function dropAll(string|false $lang = false): void
{
if($lang === false) { $this->data = []; return; }
foreach($this->data as $field_id => $field_value) {
if(self::isLang($field_id) && isset($this->data[$field_id][$lang])) unset($this->data[$field_id][$lang]);
if(!self::isLang($field_id) && isset($this->data[$field_id])) unset($this->data[$field_id]);
}
}
/**
* Drop data associated with a given field identifier
*
* @param int $field_id Field identifier
* @param string|int|false $fiel_value Field value
* @param string|false $lang Language of value set (if language is supported by value)
* @throw Exception
*/
public function drop(int $field_id, string|int|false $field_value = false, string|false $lang = false): void
{
if(self::fieldType($field_id) === self::TYPE_INVALID)
throw new Exception(_('Invalid field identifier specified'), Exception::INVALID_FIELD_ID, $field_id);
if(self::fieldType($field_id) !== self::TYPE_ARY && $field_value !== false)
throw new Exception(_('Only individual values of arrays can be dropped'), Exception::INVALID_FIELD_ID, $field_id);
if(self::isLang($field_id)) { $this->dropLang($field_id, $field_value, $lang); return; }
if($field_value !== false) {
$field_pos = array_search($field_value, $this->data[$field_id], strict: true);
unset($this->data[$field_id][$field_pos]);
}
else {
unset($this->data[$field_id]);
}
}
/**
* Return if a given field has already been set
*
* @param int $field_id Field identifier
* @param string|int|float|false $fiel_value Field value
* @param string|false $lang Language of value set (if language is supported by value)
* @return bool Is field already set
* @throw Exception
*/
public function isset(int $field_id, string|int|float|false $field_value = false, string|false $lang = false): bool
{
if(self::fieldType($field_id) === self::TYPE_INVALID)
throw new Exception(_('Invalid field identifier specified'), Exception::INVALID_FIELD_ID, $field_id);
if(self::isLang($field_id)) return $this->issetLang($field_id, $field_value, $lang);
if($field_value === false) return isset($this->data[$field_id]);
if(isset($this->data[$field_id])) {
if(is_array($this->data[$field_id])) {
$field_pos = array_search($field_value, $this->data[$field_id], strict: true);
return !($field_pos === false);
}
return true;
}
return false;
}
/**
* Return if a given field has already been set in the corresponding language
*
* @param int $field_id Field identifier
* @param string|int|float|false $fiel_value Field value
* @param string|false $lang Language of value set (if language is supported by value)
* @return bool Is field already set
* @throw Exception
*/
private function issetLang(int $field_id, string|int|float|false $field_value = false,
string|false $lang = false): bool
{
if(!self::isLang($field_id))
throw new Exception(_('Field does not support multi-lingual data'), Exception::INVALID_FIELD_DATA, $field_id);
if($field_value === false) return isset($this->data[$field_id][$lang]);
if($lang === false) $lang = self::LANG_DEFAULT;
if(isset($this->data[$field_id][$lang])) {
if(is_array($this->data[$field_id][$lang])) {
$field_pos = array_search($field_value, $this->data[$field_id][$lang], strict: true);
return !($field_pos === false);
}
return true;
}
return false;
}
/**
* Save data associated with a given field identifier is a specific language
*
* @param int $field_id Field identifier
* @param string|int|float|array|false $field_value Field value
* @param string|false $lang Language of value set
* @throw Exception
*/
private function setLang(int $field_id, string|int|float|array|false $field_value, string|false $lang): void
{
if(!self::isLang($field_id))
throw new Exception(_('Field does not support multi-lingual data'), Exception::INVALID_FIELD_DATA, $field_id);
// Setting field to false is identical to dropping field
if($field_value === false) { self::dropLang($field_id, $field_value, $lang); return; }
if($lang === false) $lang = self::LANG_DEFAULT;
// Add/update field value
if(is_array($field_value)) {
foreach($field_value as $lang_value => $data_value) {
if($lang === self::LANG_ALL || $lang_value === $lang)
$this->data[$field_id][$lang_value] = $data_value;
}
}
else {
$this->data[$field_id][$lang] = $field_value;
}
}
/**
* Return data associated with a given field is a specific language or 'false', if not value can be found
*
* @param int $field_id Field identifier
* @param string|false $lang Language of value set
* @return string|int|float|array|false Field value
* @throw Exception
*/
private function getLang(int $field_id, string|false $lang): string|int|float|array|false
{
if(!self::isLang($field_id))
throw new Exception(_('Field does not support multi-lingual data'), Exception::INVALID_FIELD_DATA, $field_id);
if($lang === false) $lang = self::LANG_DEFAULT;
if(isset($this->data[$field_id])) {
if($lang === self::LANG_ALL) return $this->data[$field_id];
if(isset($this->data[$field_id][$lang])) return $this->data[$field_id][$lang];
}
return false;
}
/**
* Drop data associated with a given field identifier in a specific language
*
* @param int $field_id Field identifier
* @param string|int|float|false $fiel_value Field value
* @param string|false $lang Language of value set (if language is supported by value)
* @throw Exception
*/
private function dropLang(int $field_id, string|int|float|false $field_value, string|false $lang): void
{
if(!self::isLang($field_id))
throw new Exception(_('Field does not support multi-lingual data'), Exception::INVALID_FIELD_DATA, $field_id);
if($lang === false) $lang = self::LANG_DEFAULT;
if($lang === self::LANG_ALL) {
if($field_value !== false) {
foreach($this->data[$field_id] as $field_lang => $value) {
$field_pos = array_search($field_value, $this->data[$field_id][$field_lang], strict: true);
if($field_pos !== false) unset($this->data[$field_id][$field_lang][$field_pos]);
}
}
else {
unset($this->data[$field_id]);
}
}
else {
if($field_value !== false) {
$field_pos = array_search($field_value, $this->data[$field_id][$lang], strict: true);
unset($this->data[$field_id][$lang][$field_pos]);
}
else {
unset($this->data[$field_id][$lang]);
}
}
}
/**
* Returns true, if the field supports multiple languages, i.e., if the XMP Standard defines it as 'Lang Alt' type
* NOTE:
* Currently only the CAPTION field is supported. Other elements that would be relevant for translation, like
* HEADLINE, CITY, or COUNTRY are not of type 'Lang Alt'. As such the XMP Standard does not explicitely support
* their translation
*
* @param int $field_id Field identifier
* @return bool Return true, if the field supports multiple languages
*/
public static function isLang(int $field_id): bool
{
return match($field_id) { self::CAPTION => true, default => false };
}
/**
* Return the type associaed with a given field identifier
*
* @param int $field_id Field identifier
* @return int Field type constant
*/
public static function fieldType(int $field_id): int
{
return match($field_id) {
self::GENRE,
self::KEYWORDS,
self::ORG_CODE,
self::ORG_NAME,
self::PERSON,
self::SCENES,
self::SUBJECT_CODE,
self::IMG_EXPOSURE
=> self::TYPE_ARY,
self::FILE_DATE,
self::FILE_SIZE,
self::CREATED_DATETIME,
self::PRIORITY,
self::RATING,
self::IMG_FLASH,
self::IMG_FOCAL_LENGTH,
self::IMG_HEIGHT,
self::IMG_ISO,
self::IMG_ORIENTATION,
self::IMG_RESOLUTION,
self::IMG_RESOLUTION_UNIT,
self::IMG_TYPE,
self::IMG_WIDTH
=> self::TYPE_INT,
self::IMG_APERTURE
=> self::TYPE_FLOAT,
self::FILE_NAME,
self::FILE_EXT,
self::AUTHOR,
self::AUTHOR_TITLE,
self::CAPTION,
self::CAPTION_WRITER,
self::CATEGORY,
self::CITY,
self::COPYRIGHT,
self::COUNTRY,
self::COUNTRY_CODE,
self::CREDIT,
self::EDIT_STATUS,
self::EVENT,
self::HEADLINE,
self::INSTRUCTIONS,
self::LOCATION,
self::OBJECT,
self::SOURCE,
self::STATE,
self::SUPP_CATEGORY_A,
self::SUPP_CATEGORY_B,
self::SUPP_CATEGORY_C,
self::TRANSFER_REF,
self::USAGE_TERMS,
self::IMG_APERTURE_FMT,
self::IMG_CAMERA_MAKE,
self::IMG_CAMERA_MODEL,
self::IMG_CAMERA_SERIAL,
self::IMG_COLOR_SPACE_FMT,
self::IMG_EXPOSURE_FMT,
self::IMG_EXPOSURE_MODE_FMT,
self::IMG_EXPOSURE_PGM_FMT,
self::IMG_FLASH_FMT,
self::IMG_FOCAL_LENGTH_FMT,
self::IMG_LENS_MAKE,
self::IMG_LENS_MODEL,
self::IMG_LENS_SERIAL,
self::IMG_METERING_MODE_FMT,
self::IMG_RESOLUTION_FMT,
self::IMG_SIZE_FMT,
self::IMG_SOFTWARE,
self::IMG_TYPE_FMT
=> self::TYPE_STR,
default
=> self::TYPE_INVALID
};
}
/**
* Return if the type asssociated with a given field value is valid
*
* @param int $field_id Field identifier
* @param string|int|float|array|false $field_value Field value
* @return bool Isd the type of the value appropriate for the field
*/
public static function isValidFieldType(int $field_id, string|int|float|array|false $field_value): bool
{
return match(self::fieldType($field_id)) {
self::TYPE_STR => gettype($field_value) === 'string',
self::TYPE_INT => gettype($field_value) === 'integer',
self::TYPE_FLOAT => gettype($field_value) === 'double' || gettype($field_value) === 'integer',
self::TYPE_ARY => gettype($field_value) === 'array',
default => false
};
}
/**
* Decompose a string containing a list of comma-separated sub-strings into an array of thos sub-strings, removing
* leading and trailing spaces.
*
* @param string|false $input Input string containing comma-separated sub-strings
* @return array|false Array of sub-strings
*/
public function stringToArray(string|false $input): array|false
{
if($input === false || empty($input)) return false;
$output_ary = [];
$substr_ary = explode(',', $input);
foreach($substr_ary as $substr) {
$substr = trim($substr);
$output_ary[$substr] = $substr;
}
return $output_ary;
}
/**
* Convert an array to a comma-separated string
*
* @param array|false $input_ary Array of strings
* @return string|false Comma-separated string
*/
public function arrayToString(array|false $input_ary): string|false
{
if($input_ary === false) return false;
$output = '';
foreach($input_ary as $field_value) {
if(!empty($output)) $output .= ', ';
$output .= trim($field_value);
}
return $output;
}
/**
* PROTECTED AND PRIVATE FUNCTIONS
*/
/**
* Expand tagged keywords into respctive fields
*
* @access private
* @param array $kwd_ary Array of keywords
*/
private function extendFields(): void
{
$kwd_ary = $this->get(self::KEYWORDS);
foreach($kwd_ary as $kwd) {
if(str_contains($kwd, ':')) {
[$field_name, $field_value] = explode(':', $kwd, 2);
switch(trim(strtolower($field_name))) {
case 'event':
case 'evt':
$this->drop(self::KEYWORDS, $kwd);
$this->set(self::EVENT, $field_value);
break;
case 'scence':
case 'sce':
$this->drop(self::KEYWORDS, $kwd);
$this->set(self::SCENES, $field_value);
break;
case 'genre':
case 'gnr':
$this->drop(self::KEYWORDS, $kwd);
$this->set(self::GENRE, $field_value);
break;
case 'people':
case 'peo':
$this->drop(self::KEYWORDS, $kwd);
$this->set(self::PERSON, $field_value);
break;
case 'organization':
case 'org':
$this->drop(self::KEYWORDS, $kwd);
$this->set(self::ORG, $field_value);
break;
case 'nationality':
case 'nat':
$this->drop(self::KEYWORDS, $kwd);
$this->set(self::NAT, $field_value);
break;
}
}
}
}
/**
* 1: READ/WRITE IPTC DATA
*/
/**
* Import IPTC metadata from JPG object
*
* @access private
* @throw Exception Invalid metadata read
*/
private function importIptc(): void
{
$iptc_data = $this->jpeg->getIptcData();
if($iptc_data === false) return;
// Set IPTC writable fields (if they have not yet bee set)
if(isset($iptc_data[Iptc::AUTHOR][0]) && !$this->isset(self::AUTHOR))
$this->set(self::AUTHOR, $iptc_data[Iptc::AUTHOR][0]);
if(isset($iptc_data[Iptc::AUTHOR_TITLE][0]) && !$this->isset(self::AUTHOR_TITLE))
$this->set(self::AUTHOR_TITLE, $iptc_data[Iptc::AUTHOR_TITLE][0]);
if(isset($iptc_data[Iptc::CAPTION][0]) && !$this->isset(self::CAPTION, self::LANG_DEFAULT))
$this->set(self::CAPTION, $iptc_data[Iptc::CAPTION][0], self::LANG_DEFAULT);
if(isset($iptc_data[Iptc::CAPTION_WRITER][0]) && !$this->isset(self::CAPTION_WRITER))
$this->set(self::CAPTION_WRITER, $iptc_data[Iptc::CAPTION_WRITER][0]);
if(isset($iptc_data[Iptc::CATEGORY][0]) && !$this->isset(self::CATEGORY))
$this->set(self::CATEGORY, $iptc_data[Iptc::CATEGORY][0]);
if(isset($iptc_data[Iptc::CITY][0]) && !$this->isset(self::CITY))
$this->set(self::CITY, $iptc_data[Iptc::CITY][0]);
if(isset($iptc_data[Iptc::COUNTRY][0]) && !$this->isset(self::COUNTRY))
$this->set(self::COUNTRY, $iptc_data[Iptc::COUNTRY][0]);
if(isset($iptc_data[Iptc::COUNTRY_CODE][0]) && !$this->isset(self::COUNTRY_CODE))
$this->set(self::COUNTRY_CODE, $iptc_data[Iptc::COUNTRY_CODE][0]);
if(isset($iptc_data[Iptc::CREDIT][0]) && !$this->isset(self::CREDIT))
$this->set(self::CREDIT, $iptc_data[Iptc::CREDIT][0]);
if(isset($iptc_data[Iptc::EDIT_STATUS][0]) && !$this->isset(self::EDIT_STATUS))
$this->set(self::EDIT_STATUS, $iptc_data[Iptc::EDIT_STATUS][0]);
if(isset($iptc_data[Iptc::GENRE][0]) && !$this->isset(self::GENRE))
$this->set(self::GENRE, $this->stringToArray($iptc_data[Iptc::GENRE][0]));
if(isset($iptc_data[Iptc::HEADLINE][0]) && !$this->isset(self::HEADLINE))
$this->set(self::HEADLINE, $iptc_data[Iptc::HEADLINE][0]);
if(isset($iptc_data[Iptc::INSTRUCTIONS][0]) && !$this->isset(self::INSTRUCTIONS))
$this->set(self::INSTRUCTIONS, $iptc_data[Iptc::INSTRUCTIONS][0]);
if(isset($iptc_data[Iptc::KEYWORDS]) && !$this->isset(self::KEYWORDS))
$this->set(self::KEYWORDS, $iptc_data[Iptc::KEYWORDS]);
if(isset($iptc_data[Iptc::LOCATION][0]) && !$this->isset(self::LOCATION))
$this->set(self::LOCATION, $iptc_data[Iptc::LOCATION][0]);
if(isset($iptc_data[Iptc::OBJECT][0]) && !$this->isset(self::OBJECT))
$this->set(self::OBJECT, $iptc_data[Iptc::OBJECT][0]);
if(isset($iptc_data[Iptc::PRIORITY][0]) && !$this->isset(self::PRIORITY))
$this->set(self::PRIORITY, (int)$iptc_data[Iptc::PRIORITY][0]);
if(isset($iptc_data[Iptc::SOURCE][0]) && !$this->isset(self::SOURCE))
$this->set(self::SOURCE, $iptc_data[Iptc::SOURCE][0]);
if(isset($iptc_data[Iptc::STATE][0]) && !$this->isset(self::STATE))
$this->set(self::STATE, $iptc_data[Iptc::STATE][0]);
if(isset($iptc_data[Iptc::SUBJECT_CODE]) && !$this->isset(self::SUBJECT_CODE))
$this->set(self::SUBJECT_CODE, $iptc_data[Iptc::SUBJECT_CODE]);
if(isset($iptc_data[Iptc::SUPP_CATEGORY][0]) && !$this->isset(self::SUPP_CATEGORY_A))
$this->set(self::SUPP_CATEGORY_A, $iptc_data[Iptc::SUPP_CATEGORY][0]);
if(isset($iptc_data[Iptc::SUPP_CATEGORY][1]) && !$this->isset(self::SUPP_CATEGORY_B))
$this->set(self::SUPP_CATEGORY_B, $iptc_data[Iptc::SUPP_CATEGORY][1]);
if(isset($iptc_data[Iptc::SUPP_CATEGORY][2]) && !$this->isset(self::SUPP_CATEGORY_C))
$this->set(self::SUPP_CATEGORY_C, $iptc_data[Iptc::SUPP_CATEGORY][2]);
if(isset($iptc_data[Iptc::TRANSFER_REF][0]) && !$this->isset(self::TRANSFER_REF))
$this->set(self::TRANSFER_REF, $iptc_data[Iptc::TRANSFER_REF][0]);
// Set IPTC read-only fields
if(isset($iptc_data[Iptc::CREATED_DATE][0]) &&
isset($iptc_data[Iptc::CREATED_TIME][0]) && !$this->isset(self::CREATED_DATETIME))
$this->setRW(self::CREATED_DATETIME, strtotime($iptc_data[Iptc::CREATED_DATE][0].' '.
$iptc_data[Iptc::CREATED_TIME][0]));
}
/**
* Export IPTC data, replacing existing data
*
* @access private
* @throw Exception Invalid metadata read
*/
private function exportIptc(): void
{
$iptc_data = [];
if($this->isset(self::AUTHOR)) $iptc_data[Iptc::AUTHOR][0] = $this->get(self::AUTHOR);
if($this->isset(self::AUTHOR_TITLE)) $iptc_data[Iptc::AUTHOR_TITLE][0] = $this->get(self::AUTHOR_TITLE);
if($this->isset(self::CAPTION, self::LANG_DEFAULT))
$iptc_data[Iptc::CAPTION][0] = $this->get(self::CAPTION, self::LANG_DEFAULT);
if($this->isset(self::CAPTION_WRITER))
$iptc_data[Iptc::CAPTION_WRITER][0] = $this->get(self::CAPTION_WRITER);
if($this->isset(self::CATEGORY)) $iptc_data[Iptc::CATEGORY][0] = $this->get(self::CATEGORY);
if($this->isset(self::CITY)) $iptc_data[Iptc::CITY][0] = $this->get(self::CITY);
if($this->isset(self::COPYRIGHT)) $iptc_data[Iptc::COPYRIGHT][0] = $this->get(self::COPYRIGHT);
if($this->isset(self::COUNTRY)) $iptc_data[Iptc::COUNTRY][0] = $this->get(self::COUNTRY);
if($this->isset(self::COUNTRY_CODE)) $iptc_data[Iptc::COUNTRY_CODE][0] = $this->get(self::COUNTRY_CODE);
if($this->isset(self::CREDIT)) $iptc_data[Iptc::CREDIT][0] = $this->get(self::CREDIT);
if($this->isset(self::EDIT_STATUS)) $iptc_data[Iptc::EDIT_STATUS][0] = $this->get(self::EDIT_STATUS);
if($this->isset(self::GENRE)) $iptc_data[Iptc::GENRE][0] = $this->arrayToString($this->get(self::GENRE));
if($this->isset(self::HEADLINE)) $iptc_data[Iptc::HEADLINE][0] = $this->get(self::HEADLINE);
if($this->isset(self::INSTRUCTIONS)) $iptc_data[Iptc::INSTRUCTIONS][0] = $this->get(self::INSTRUCTIONS);
if($this->isset(self::KEYWORDS)) $iptc_data[Iptc::KEYWORDS] = $this->get(self::KEYWORDS);
if($this->isset(self::LOCATION)) $iptc_data[Iptc::LOCATION][0] = $this->get(self::LOCATION);
if($this->isset(self::OBJECT)) $iptc_data[Iptc::OBJECT][0] = $this->get(self::OBJECT);
if($this->isset(self::PRIORITY)) $iptc_data[Iptc::PRIORITY][0] = $this->get(self::PRIORITY);
if($this->isset(self::SOURCE)) $iptc_data[Iptc::SOURCE][0] = $this->get(self::SOURCE);
if($this->isset(self::STATE)) $iptc_data[Iptc::STATE][0] = $this->get(self::STATE);
if($this->isset(self::SUBJECT_CODE)) $iptc_data[Iptc::SUBJECT_CODE] = $this->get(self::SUBJECT_CODE);
if($this->isset(self::CATEGORY)) $iptc_data[Iptc::CATEGORY][0] = $this->get(self::CATEGORY);
if($this->isset(self::SUPP_CATEGORY_A))
$iptc_data[Iptc::SUPP_CATEGORY][0] = $this->get(self::SUPP_CATEGORY_A);
if(!$this->isset(self::SUPP_CATEGORY_A) && $this->isset(self::SUPP_CATEGORY_B))
$iptc_data[Iptc::SUPP_CATEGORY][0] = '';
if($this->isset(self::SUPP_CATEGORY_B))
$iptc_data[Iptc::SUPP_CATEGORY][1] = $this->get(self::SUPP_CATEGORY_B);
if(!$this->isset(self::SUPP_CATEGORY_B) && $this->isset(self::SUPP_CATEGORY_C))
$iptc_data[Iptc::SUPP_CATEGORY][1] = '';
if($this->isset(self::SUPP_CATEGORY_C))
$iptc_data[Iptc::SUPP_CATEGORY][2] = $this->get(self::SUPP_CATEGORY_C);
if($this->isset(self::TRANSFER_REF)) $iptc_data[Iptc::TRANSFER_REF][0] = $this->get(self::TRANSFER_REF);
if(empty($iptc_data)) $this->jpeg->setIptcData(false); else $this->jpeg->setIptcData($iptc_data);
}
/**
* 2./ READ/WRITE XMP DATA
*/
/**
* Read XMP metadata from file and preserve original XMP data for future use
* Function may be extended to read additional fields and/or recoginiez additional tags
*
* @access protected
* @param string $filename Filename to read metadata from
* @throw Exception Invalid metadata read
*/
protected function importXmp(): void
{
$xmp_data = $this->jpeg->getXmpData();
if($xmp_data === false) return;
// Set XMP writable fields (if they have not yet bee set)
if(!$this->isset(self::AUTHOR) && $xmp_data->isXmpText(Xmp::AUTHOR))
$this->set(self::AUTHOR, $xmp_data->getXmpText(Xmp::AUTHOR));
if(!$this->isset(self::AUTHOR_TITLE) && $xmp_data->isXmpText(Xmp::PS_AUTHOR_TITLE))
$this->set(self::AUTHOR_TITLE, $xmp_data->getXmpText(Xmp::PS_AUTHOR_TITLE));
$this->setLang(self::CAPTION, $xmp_data->getXmpLangAlt(Xmp::CAPTION, self::LANG_ALL), self::LANG_ALL);
if(!$this->isset(self::CATEGORY) && $xmp_data->isXmpText(Xmp::PS_CATEGORY))
$this->set(self::CATEGORY, $xmp_data->getXmpText(Xmp::PS_CATEGORY));
if(!$this->isset(self::CITY) && $xmp_data->isXmpText(Xmp::CITY))
$this->set(self::CITY, $xmp_data->getXmpText(Xmp::CITY));
if(!$this->isset(self::COPYRIGHT) && $xmp_data->isXmpText(Xmp::COPYRIGHT))
$this->set(self::COPYRIGHT, $xmp_data->getXmpText(Xmp::COPYRIGHT));
if(!$this->isset(self::COUNTRY) && $xmp_data->isXmpText(Xmp::COUNTRY))
$this->set(self::COUNTRY, $xmp_data->getXmpText(Xmp::COUNTRY));
if(!$this->isset(self::COUNTRY) && $xmp_data->isXmpText(Xmp::PS_COUNTRY))
$this->set(self::COUNTRY, $xmp_data->getXmpText(Xmp::PS_COUNTRY));
if(!$this->isset(self::COUNTRY_CODE) && $xmp_data->isXmpText(Xmp::COUNTRY_CODE))
$this->set(self::COUNTRY_CODE, $xmp_data->getXmpText(Xmp::COUNTRY_CODE));
if(!$this->isset(self::CREDIT) && $xmp_data->isXmpText(Xmp::CREDIT))
$this->set(self::CREDIT, $xmp_data->getXmpText(Xmp::CREDIT));
if(!$this->isset(self::GENRE) && $xmp_data->isXmpText(Xmp::GENRE))
$this->set(self::GENRE, $this->stringToArray($xmp_data->getXmpText(Xmp::GENRE)));
if(!$this->isset(self::HEADLINE) && $xmp_data->isXmpText(Xmp::PS_HEADLINE))
$this->set(self::HEADLINE, $xmp_data->getXmpText(Xmp::PS_HEADLINE));
if(!$this->isset(self::INSTRUCTIONS) && $xmp_data->isXmpText(Xmp::INSTRUCTIONS))
$this->set(self::INSTRUCTIONS, $xmp_data->getXmpText(Xmp::INSTRUCTIONS));
if(!$this->isset(self::KEYWORDS) && $xmp_data->isXmpBag(Xmp::KEYWORDS))
$this->set(self::KEYWORDS, $xmp_data->getXmpBag(Xmp::KEYWORDS));
if(!$this->isset(self::LOCATION) && $xmp_data->isXmpText(Xmp::LOCATION))
$this->set(self::LOCATION, $xmp_data->getXmpText(Xmp::LOCATION));
if(!$this->isset(self::OBJECT) && $xmp_data->isXmpText(Xmp::OBJECT))
$this->set(self::OBJECT, $xmp_data->getXmpText(Xmp::OBJECT));
if(!$this->isset(self::PRIORITY) && $xmp_data->isXmpText(Xmp::PS_PRIORITY))
$this->set(self::PRIORITY, (int)$xmp_data->getXmpText(Xmp::PS_PRIORITY));
if(!$this->isset(self::SCENES) && $xmp_data->isXmpBag(Xmp::SCENES))
$this->set(self::SCENES, $xmp_data->getXmpBag(Xmp::SCENES));
if(!$this->isset(self::SOURCE) && $xmp_data->isXmpText(Xmp::SOURCE))
$this->set(self::SOURCE, $xmp_data->getXmpText(Xmp::SOURCE));
if(!$this->isset(self::SOURCE) && $xmp_data->isXmpText(Xmp::PS_SOURCE))
$this->set(self::SOURCE, $xmp_data->getXmpText(Xmp::PS_SOURCE));
if(!$this->isset(self::SUBJECT_CODE) && $xmp_data->isXmpBag(Xmp::SUBJECT_CODE))
$this->set(self::SUBJECT_CODE, $xmp_data->getXmpBag(Xmp::SUBJECT_CODE));
if(!$this->isset(self::USAGE_TERMS) && $xmp_data->isXmpText(Xmp::USAGE_TERMS))
$this->set(self::USAGE_TERMS, $xmp_data->getXmpText(Xmp::USAGE_TERMS));
if(!$this->isset(self::EVENT) && $xmp_data->isXmpText(Xmp::EVENT))
$this->set(self::EVENT, $xmp_data->getXmpText(Xmp::EVENT));
if(!$this->isset(self::ORG_CODE) && $xmp_data->isXmpBag(Xmp::ORG_CODE))
$this->set(self::ORG_CODE, $xmp_data->getXmpBag(Xmp::ORG_CODE));
if(!$this->isset(self::ORG_NAME) && $xmp_data->isXmpBag(Xmp::ORG_NAME))
$this->set(self::ORG_NAME, $xmp_data->getXmpBag(Xmp::ORG_NAME));
if(!$this->isset(self::PERSON) && $xmp_data->isXmpBag(Xmp::PERSON))
$this->set(self::PERSON, $xmp_data->getXmpBag(Xmp::PERSON));
if(!$this->isset(self::RATING) && $xmp_data->isXmpText(Xmp::RATING))
$this->set(self::RATING, (int)$xmp_data->getXmpText(Xmp::RATING));
// Set PhotoShop specific XMP writeables fields
if(!$this->isset(self::AUTHOR_TITLE) && $xmp_data->isXmpText(Xmp::PS_AUTHOR_TITLE))
$this->set(self::AUTHOR_TITLE, $xmp_data->getXmpText(Xmp::PS_AUTHOR_TITLE));
if(!$this->isset(self::CAPTION_WRITER) && $xmp_data->isXmpText(Xmp::PS_CAPTION_WRITER))
$this->set(self::CAPTION_WRITER, $xmp_data->getXmpText(Xmp::PS_CAPTION_WRITER));
if(!$this->isset(self::CATEGORY) && $xmp_data->isXmpText(Xmp::PS_CATEGORY))
$this->set(self::CATEGORY, $xmp_data->getXmpText(Xmp::PS_CATEGORY));
if(!$this->isset(self::CITY) && $xmp_data->isXmpText(Xmp::PS_CITY))
$this->set(self::CITY, $xmp_data->getXmpText(Xmp::PS_CITY));
if(!$this->isset(self::COUNTRY) && $xmp_data->isXmpText(Xmp::PS_COUNTRY))
$this->set(self::COUNTRY, $xmp_data->getXmpText(Xmp::PS_COUNTRY));
if(!$this->isset(self::EDIT_STATUS) && $xmp_data->isXmpText(Xmp::PM_EDIT_STATUS))
$this->set(self::EDIT_STATUS, $xmp_data->getXmpText(Xmp::PM_EDIT_STATUS));
if(!$this->isset(self::HEADLINE) && $xmp_data->isXmpText(Xmp::PS_HEADLINE))
$this->set(self::HEADLINE, $xmp_data->getXmpText(Xmp::PS_HEADLINE));
if(!$this->isset(self::SOURCE) && $xmp_data->isXmpText(Xmp::PS_SOURCE))
$this->set(self::SOURCE, $xmp_data->getXmpText(Xmp::PS_SOURCE));
if(!$this->isset(self::STATE) && $xmp_data->isXmpText(Xmp::PS_STATE))
$this->set(self::STATE, $xmp_data->getXmpText(Xmp::PS_STATE));
if($xmp_data->isXmpBag(Xmp::PS_SUPP_CATEGORY)) {
$supp_categories = $xmp_data->getXmpBag(Xmp::PS_SUPP_CATEGORY);
if(!$this->isset(self::SUPP_CATEGORY_A) && isset($supp_categories[0]))
$this->set(self::SUPP_CATEGORY_A, $supp_categories[0]);
if(!$this->isset(self::SUPP_CATEGORY_B) && isset($supp_categories[1]))
$this->set(self::SUPP_CATEGORY_B, $supp_categories[1]);
if(!$this->isset(self::SUPP_CATEGORY_C) && isset($supp_categories[2]))
$this->set(self::SUPP_CATEGORY_C, $supp_categories[2]);
}
if(!$this->isset(self::PRIORITY) && $xmp_data->isXmpText(Xmp::PS_PRIORITY))
$this->set(self::PRIORITY, (int)$xmp_data->getXmpText(Xmp::PS_PRIORITY));
if(!$this->isset(self::TRANSFER_REF) && $xmp_data->isXmpText(Xmp::PS_TRANSFER_REF))
$this->set(self::TRANSFER_REF, $xmp_data->getXmpText(Xmp::PS_TRANSFER_REF));
// Set XMP read-only fields
if(!$this->isset(self::CREATED_DATETIME) && $xmp_data->isXmpText(Xmp::CREATED_DATETIME))
$this->setRW(self::CREATED_DATETIME, strtotime($xmp_data->getXmpText(Xmp::CREATED_DATETIME)));
if(!$this->isset(self::CREATED_DATETIME) && $xmp_data->isXmpText(Xmp::PS_CREATED_DATETIME))
$this->setRW(self::CREATED_DATETIME, strtotime($xmp_data->getXmpText(Xmp::PS_CREATED_DATETIME)));
// Set XMP read-only fields related to IMG_ data fields
if(!$this->isset(self::IMG_CAMERA_SERIAL) && $xmp_data->isXmpText(Xmp::CAMERA_SERIAL))
$this->setRW(self::IMG_CAMERA_SERIAL, $xmp_data->getXmpText(Xmp::CAMERA_SERIAL));
if(!$this->isset(self::IMG_LENS_MODEL) && $xmp_data->isXmpText(Xmp::LENS_MODEL))
$this->setRW(self::IMG_LENS_MODEL, $xmp_data->getXmpText(Xmp::LENS_MODEL));
if(!$this->isset(self::IMG_LENS_SERIAL) && $xmp_data->isXmpText(Xmp::LENS_SERIAL))
$this->setRW(self::IMG_LENS_SERIAL, $xmp_data->getXmpText(Xmp::LENS_SERIAL));
if(!$this->isset(self::IMG_COLOR_SPACE_FMT) && $xmp_data->isXmpText(Xmp::COLOR_SPACE))
$this->setRW(self::IMG_COLOR_SPACE_FMT, $xmp_data->getXmpText(Xmp::COLOR_SPACE));
if($xmp_data->isXmpText(Xmp::COLOR_MODE) && $this->isset(self::IMG_COLOR_SPACE_FMT)) {
$color_mode = match((int)$xmp_data->getXmpText(Xmp::COLOR_MODE)) {
0 => _('Bitmap'),
1 => _('Grayscale'),
2 => _('Indexed'),
3 => _('RGB'),
4 => _('CMYK'),
7 => _('Multichannel'),
8 => _('Duotone'),
9 => _('Lab'),
default => _('Unknown')
};
if($color_mode !== _('Unknown'))
$this->setRW(self::IMG_COLOR_SPACE_FMT, $this->get(self::IMG_COLOR_SPACE_FMT).' / '.$color_mode);
}
}
/**
* Write XMP data, merging with existing data (if no data exists, no data is exported to XMP)
*
* @access protected
* @param string $filename Filename to replace metadata in
* @throw Exception Invalid metadata read
*/
protected function exportXmp(): void
{
$xmp_data = $this->jpeg->getXmpData();
if($xmp_data === false) return;
$xmp_data->setXmpSeq(Xmp::AUTHOR, $this->get(self::AUTHOR));
$xmp_data->setXmpText(Xmp::PS_AUTHOR_TITLE, $this->get(self::AUTHOR_TITLE));
$xmp_data->setXmpLangAlt(Xmp::CAPTION, $this->getLang(self::CAPTION, self::LANG_ALL));
$xmp_data->setXmpText(Xmp::PS_CAPTION_WRITER, $this->get(self::CAPTION_WRITER));
$xmp_data->setXmpText(Xmp::PS_CATEGORY, $this->get(self::CATEGORY));
$xmp_data->setXmpText(Xmp::CITY, $this->get(self::CITY));
if($xmp_data->isXmpText(Xmp::PS_CITY)) $xmp_data->setXmpText(Xmp::PS_CITY, $this->get(self::CITY));
$xmp_data->setXmpAlt(Xmp::COPYRIGHT, $this->get(self::COPYRIGHT));
$xmp_data->setXmpText(Xmp::COUNTRY, $this->get(self::COUNTRY));
if($xmp_data->isXmpText(Xmp::PS_COUNTRY)) $xmp_data->setXmpText(Xmp::PS_COUNTRY, $this->get(self::COUNTRY));
$xmp_data->setXmpText(Xmp::COUNTRY_CODE, $this->get(self::COUNTRY_CODE));
$xmp_data->setXmpText(Xmp::CREDIT, $this->get(self::CREDIT));
$xmp_data->setXmpText(Xmp::PM_EDIT_STATUS, $this->get(self::EDIT_STATUS));
$xmp_data->setXmpText(Xmp::GENRE, self::arrayToString($this->get(self::GENRE)));
$xmp_data->setXmpText(Xmp::PS_HEADLINE, $this->get(self::HEADLINE));
$xmp_data->setXmpText(Xmp::INSTRUCTIONS, $this->get(self::INSTRUCTIONS));
$xmp_data->setXmpBag(Xmp::KEYWORDS, $this->get(self::KEYWORDS));
$xmp_data->setXmpText(Xmp::LOCATION, $this->get(self::LOCATION));