<?php
/*
* PEL: PHP Exif Library.
* A library with support for reading and
* writing all Exif headers in JPEG and TIFF images using PHP.
*
* Copyright (C) 2004, 2005 Martin Geisler.
* Copyright (C) 2017 Johannes Weberhofer.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in the file COPYING; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* Namespace for functions operating on Exif formats.
*
* This class defines the constants that are to be used whenever one
* has to refer to the format of an Exif tag. They will be
* collectively denoted by the pseudo-type PelFormat throughout the
* documentation.
*
* All the methods defined here are static, and they all operate on a
* single argument which should be one of the class constants.
*
* @author Vinzenz Rosenkranz <vinzenz.rosenkranz@gmail.com>
* @author Thanks to Benedikt Rosenkranz <beluro@web.de>
* @license http://www.gnu.org/licenses/gpl.html GNU General Public
* License (GPL)
* @package
*
*/
namespace lsolesen\pel;
class PelCanonMakerNotes extends PelMakerNotes
{
private $undefinedMakerNotesTags = [
0x0000,
0x0003,
0x000a,
0x000e,
0x0011,
0x0014,
0x0016,
0x0017,
0x0018,
0x0019,
0x001b,
0x001c,
0x001d,
0x001f,
0x0020,
0x0021,
0x0022,
0x0023,
0x0024,
0x0025,
0x0031,
0x0035,
0x0098,
0x009a,
0x00b5,
0x00c0,
0x00c1,
0x4008,
0x4009,
0x4010,
0x4011,
0x4012,
0x4013,
0x4015,
0x4016,
0x4018,
0x4019,
0x4020,
0x4025,
0x4027
];
private $undefinedCameraSettingsTags = [
0x0006,
0x0008,
0x0015,
0x001e,
0x001f,
0x0026,
0x002b,
0x002c,
0x002d,
0x002f,
0x0030,
0x0031
];
private $undefinedShotInfoTags = [
0x0001,
0x0006,
0x000a,
0x000b,
0x000c,
0x000d,
0x0011,
0x0012,
0x0014,
0x0018,
0x0019,
0x001d,
0x001e,
0x001f,
0x0020,
0x0021,
0x0022
];
private $undefinedPanoramaTags = [
0x0001,
0x0003,
0x0004
];
private $undefinedPicInfoTags = [
0x0001,
0x0006,
0x0007,
0x0008,
0x0009,
0x000a,
0x000b,
0x000c,
0x000d,
0x000e,
0x000f,
0x0010,
0x0011,
0x0012,
0x0013,
0x0014,
0x0015,
0x0017,
0x0018,
0x0019,
0x001b,
0x001c
];
private $undefinedFileInfoTags = [
0x0002,
0x000a,
0x000b,
0x0011,
0x0012,
0x0016,
0x0017,
0x0018,
0x001a,
0x001b,
0x001c,
0x001d,
0x001e,
0x001f,
0x0020
];
public function __construct($parent, $data, $size, $offset)
{
parent::__construct($parent, $data, $size, $offset);
$this->type = PelIfd::CANON_MAKER_NOTES;
}
public function load()
{
$this->components = $this->data->getShort($this->offset);
$this->offset += 2;
Pel::debug('Loading %d components in maker notes.', $this->components);
$mkNotesIfd = new PelIfd(PelIfd::CANON_MAKER_NOTES);
for ($i = 0; $i < $this->components; $i ++) {
$tag = $this->data->getShort($this->offset + 12 * $i);
$components = $this->data->getLong($this->offset + 12 * $i + 4);
$data = $this->data->getLong($this->offset + 12 * $i + 8);
// check if tag is defined
if (in_array($tag, $this->undefinedMakerNotesTags)) {
continue;
}
switch ($tag) {
case PelTag::CANON_CAMERA_SETTINGS:
$this->parseCameraSettings($mkNotesIfd, $this->data, $data, $components);
break;
case PelTag::CANON_SHOT_INFO:
$this->parseShotInfo($mkNotesIfd, $this->data, $data, $components);
break;
case PelTag::CANON_PANORAMA:
$this->parsePanorama($mkNotesIfd, $this->data, $data, $components);
break;
case PelTag::CANON_PICTURE_INFO:
// TODO: Does not work at the moment
// $this->parsePictureInfo($mkNotesIfd, $this->data, $data, $components);
break;
case PelTag::CANON_FILE_INFO:
$this->parseFileInfo($mkNotesIfd, $this->data, $data, $components);
break;
case PelTag::CANON_CUSTOM_FUNCTIONS:
// TODO
default:
$mkNotesIfd->loadSingleValue($this->data, $this->offset, $i, $tag);
break;
}
}
$this->parent->addSubIfd($mkNotesIfd);
}
private function parseCameraSettings($parent, $data, $offset, $components)
{
$type = PelIfd::CANON_CAMERA_SETTINGS;
Pel::debug('Found Canon Camera Settings sub IFD at offset %d', $offset);
$size = $data->getShort($offset);
$offset += 2;
$elemSize = PelFormat::getSize(PelFormat::SSHORT);
if ((! $components) || ($size / $components !== $elemSize)) {
throw new PelMakerNotesMalformedException('Size of Canon Camera Settings does not match the number of entries.');
}
$camIfd = new PelIfd($type);
for ($i = 0; $i < $components; $i ++) {
// check if tag is defined
if (in_array($i + 1, $this->undefinedCameraSettingsTags)) {
continue;
}
$camIfd->loadSingleMakerNotesValue($type, $data, $offset, $size, $i, PelFormat::SSHORT);
}
$parent->addSubIfd($camIfd);
}
private function parseShotInfo($parent, $data, $offset, $components)
{
$type = PelIfd::CANON_SHOT_INFO;
Pel::debug('Found Canon Shot Info sub IFD at offset %d', $offset);
$size = $data->getShort($offset);
$offset += 2;
$elemSize = PelFormat::getSize(PelFormat::SHORT);
if ($size / $components !== $elemSize) {
throw new PelMakerNotesMalformedException('Size of Canon Shot Info does not match the number of entries.');
}
$shotIfd = new PelIfd($type);
for ($i = 0; $i < $components; $i ++) {
// check if tag is defined
if (in_array($i + 1, $this->undefinedShotInfoTags)) {
continue;
}
$shotIfd->loadSingleMakerNotesValue($type, $data, $offset, $size, $i, PelFormat::SHORT);
}
$parent->addSubIfd($shotIfd);
}
private function parsePanorama($parent, $data, $offset, $components)
{
$type = PelIfd::CANON_PANORAMA;
Pel::debug('Found Canon Panorama sub IFD at offset %d', $offset);
$size = $data->getShort($offset);
$offset += 2;
$elemSize = PelFormat::getSize(PelFormat::SHORT);
if ($size / $components !== $elemSize) {
throw new PelMakerNotesMalformedException('Size of Canon Panorama does not match the number of entries.');
}
$panoramaIfd = new PelIfd($type);
for ($i = 0; $i < $components; $i ++) {
// check if tag is defined
if (in_array($i + 1, $this->undefinedPanoramaTags)) {
continue;
}
$panoramaIfd->loadSingleMakerNotesValue($type, $data, $offset, $size, $i, PelFormat::SHORT);
}
$parent->addSubIfd($panoramaIfd);
}
/**
* This method does not work properly
*/
private function parsePictureInfo($parent, $data, $offset, $components)
{
$type = PelIfd::CANON_PICTURE_INFO;
Pel::debug('Found Canon Picture Info sub IFD at offset %d', $offset);
$size = $data->getShort($offset);
$offset += 2;
$elemSize = PelFormat::getSize(PelFormat::SHORT);
if ($size / $components !== $elemSize) {
throw new PelMakerNotesMalformedException('Size of Canon Picture Info does not match the number of entries. ' . $size . '/' . $components . ' = ' . $elemSize);
}
$picIfd = new PelIfd($type);
for ($i = 0; $i < $components; $i ++) {
// check if tag is defined
printf("Current Tag: %d\n", ($i + 1));
if (in_array($i + 1, $this->undefinedPicInfoTags)) {
continue;
}
$picIfd->loadSingleMakerNotesValue($type, $data, $offset, $size, $i, PelFormat::SHORT);
}
$parent->addSubIfd($picIfd);
}
private function parseFileInfo($parent, $data, $offset, $components)
{
$type = PelIfd::CANON_FILE_INFO;
Pel::debug('Found Canon File Info sub IFD at offset %d', $offset);
$size = $data->getShort($offset);
$offset += 2;
$elemSize = PelFormat::getSize(PelFormat::SSHORT);
if ($size === $elemSize * ($components - 1) + PelFormat::getSize(PelFormat::LONG)) {
throw new PelMakerNotesMalformedException('Size of Canon File Info does not match the number of entries.');
}
$fileIfd = new PelIfd($type);
for ($i = 0; $i < $components; $i ++) {
// check if tag is defined
if (in_array($i + 1, $this->undefinedFileInfoTags)) {
continue;
}
$format = PelFormat::SSHORT;
if ($i + 1 == PelTag::CANON_FI_FILE_NUMBER) {
$format = PelFormat::LONG;
}
$fileIfd->loadSingleMakerNotesValue($type, $data, $offset, $size, $i, $format);
}
$parent->addSubIfd($fileIfd);
}
}
|