Ejemplo n.º 1
0
function ifdToTest($name, $number, PelIfd $ifd)
{
    println();
    println('/* Start of IDF %s%d. */', $name, $number);
    $entries = $ifd->getEntries();
    println('$this->assertEqual(count(%s%d->getEntries()), %d);', $name, $number, count($entries));
    foreach ($entries as $tag => $entry) {
        println();
        println('$entry = %s%d->getEntry(%d); // %s', $name, $number, $tag, PelTag::getName($ifd->getType(), $tag));
        entryToTest('$entry', $entry);
    }
    println();
    println('/* Sub IFDs of %s%d. */', $name, $number);
    $sub_ifds = $ifd->getSubIfds();
    println('$this->assertEqual(count(%s%d->getSubIfds()), %d);', $name, $number, count($sub_ifds));
    $n = 0;
    $sub_name = $name . $number . '_';
    foreach ($sub_ifds as $type => $sub_ifd) {
        println('%s%d = %s%d->getSubIfd(%d); // IFD %s', $sub_name, $n, $name, $number, $type, $sub_ifd->getName());
        println('$this->assertIsA(%s%d, \'PelIfd\');', $sub_name, $n);
        ifdToTest($sub_name, $n, $sub_ifd);
        $n++;
    }
    println();
    if (strlen($ifd->getThumbnailData()) > 0) {
        println('$thumb_data = file_get_contents(dirname(__FILE__) .');
        println('                                \'/%s\');', $GLOBALS['thumb_filename']);
        println('$this->assertEqual(%s%d->getThumbnailData(), $thumb_data);', $name, $number);
    } else {
        println('$this->assertEqual(%s%d->getThumbnailData(), \'\');', $name, $number);
    }
    println();
    println('/* Next IFD. */');
    $next = $ifd->getNextIfd();
    println('%s%d = %s%d->getNextIfd();', $name, $number + 1, $name, $number);
    if ($next instanceof PelIfd) {
        println('$this->assertIsA(%s%d, \'PelIfd\');', $name, $number + 1);
        println('/* End of IFD %s%d. */', $name, $number);
        ifdToTest($name, $number + 1, $next);
    } else {
        println('$this->assertNull(%s%d);', $name, $number + 1);
        println('/* End of IFD %s%d. */', $name, $number);
    }
}
Ejemplo n.º 2
0
 /**
  * Load data into a Image File Directory (IFD).
  *
  * @param PelDataWindow the data window that will provide the data.
  *
  * @param int the offset within the window where the directory will
  * be found.
  */
 function load(PelDataWindow $d, $offset)
 {
     $thumb_offset = 0;
     $thumb_length = 0;
     Pel::debug('Constructing IFD at offset %d from %d bytes...', $offset, $d->getSize());
     /* Read the number of entries */
     $n = $d->getShort($offset);
     Pel::debug('Loading %d entries...', $n);
     $offset += 2;
     /* Check if we have enough data. */
     if ($offset + 12 * $n > $d->getSize()) {
         $n = floor(($offset - $d->getSize()) / 12);
         Pel::maybeThrow(new PelIfdException('Adjusted to: %d.', $n));
     }
     for ($i = 0; $i < $n; $i++) {
         // TODO: increment window start instead of using offsets.
         $tag = $d->getShort($offset + 12 * $i);
         Pel::debug('Loading entry with tag 0x%04X: %s (%d of %d)...', $tag, PelTag::getName($this->type, $tag), $i + 1, $n);
         switch ($tag) {
             case PelTag::EXIF_IFD_POINTER:
             case PelTag::GPS_INFO_IFD_POINTER:
             case PelTag::INTEROPERABILITY_IFD_POINTER:
                 $o = $d->getLong($offset + 12 * $i + 8);
                 Pel::debug('Found sub IFD at offset %d', $o);
                 /* Map tag to IFD type. */
                 if ($tag == PelTag::EXIF_IFD_POINTER) {
                     $type = PelIfd::EXIF;
                 } elseif ($tag == PelTag::GPS_INFO_IFD_POINTER) {
                     $type = PelIfd::GPS;
                 } elseif ($tag == PelTag::INTEROPERABILITY_IFD_POINTER) {
                     $type = PelIfd::INTEROPERABILITY;
                 }
                 $this->sub[$type] = new PelIfd($type);
                 $this->sub[$type]->load($d, $o);
                 break;
             case PelTag::JPEG_INTERCHANGE_FORMAT:
                 $thumb_offset = $d->getLong($offset + 12 * $i + 8);
                 $this->safeSetThumbnail($d, $thumb_offset, $thumb_length);
                 break;
             case PelTag::JPEG_INTERCHANGE_FORMAT_LENGTH:
                 $thumb_length = $d->getLong($offset + 12 * $i + 8);
                 $this->safeSetThumbnail($d, $thumb_offset, $thumb_length);
                 break;
             default:
                 $format = $d->getShort($offset + 12 * $i + 2);
                 $components = $d->getLong($offset + 12 * $i + 4);
                 /* The data size.  If bigger than 4 bytes, the actual data is
                  * not in the entry but somewhere else, with the offset stored
                  * in the entry.
                  */
                 $s = PelFormat::getSize($format) * $components;
                 if ($s > 0) {
                     $doff = $offset + 12 * $i + 8;
                     if ($s > 4) {
                         $doff = $d->getLong($doff);
                     }
                     $data = $d->getClone($doff, $s);
                 } else {
                     $data = new PelDataWindow();
                 }
                 try {
                     $entry = $this->newEntryFromData($tag, $format, $components, $data);
                     $this->addEntry($entry);
                 } catch (PelException $e) {
                     /* Throw the exception when running in strict mode, store
                      * otherwise. */
                     Pel::maybeThrow($e);
                 }
                 /* The format of the thumbnail is stored in this tag. */
                 //         TODO: handle TIFF thumbnail.
                 //         if ($tag == PelTag::COMPRESSION) {
                 //           $this->thumb_format = $data->getShort();
                 //         }
                 break;
         }
     }
     /* Offset to next IFD */
     $o = $d->getLong($offset + 12 * $n);
     Pel::debug('Current offset is %d, link at %d points to %d.', $offset, $offset + 12 * $n, $o);
     if ($o > 0) {
         /* Sanity check: we need 6 bytes  */
         if ($o > $d->getSize() - 6) {
             Pel::maybeThrow(new PelIfdException('Bogus offset to next IFD: ' . '%d > %d!', $o, $d->getSize() - 6));
         } else {
             if ($this->type == PelIfd::IFD1) {
                 // IFD1 shouldn't link further...
                 Pel::maybeThrow(new PelIfdException('IFD1 links to another IFD!'));
             }
             $this->next = new PelIfd(PelIfd::IFD1);
             $this->next->load($d, $o);
         }
     } else {
         Pel::debug('Last IFD.');
     }
 }
Ejemplo n.º 3
0
 /**
  * Turn this entry into a string.
  *
  * @return string a string representation of this entry.  This is
  * mostly for debugging.
  */
 function __toString()
 {
     $str = Pel::fmt("  Tag: 0x%04X (%s)\n", $this->tag, PelTag::getName($this->ifd_type, $this->tag));
     $str .= Pel::fmt("    Format    : %d (%s)\n", $this->format, PelFormat::getName($this->format));
     $str .= Pel::fmt("    Components: %d\n", $this->components);
     if ($this->getTag() != PelTag::MAKER_NOTE && $this->getTag() != PelTag::PRINT_IM) {
         $str .= Pel::fmt("    Value     : %s\n", print_r($this->getValue(), true));
     }
     $str .= Pel::fmt("    Text      : %s\n", $this->getText());
     return $str;
 }
 /**
  * Construct a new exception indicating a wrong number of
  * components.
  *
  * @param int $type
  *            the type of IFD.
  *
  * @param PelTag $tag
  *            the tag for which the violation was found.
  *
  * @param int $found
  *            the number of components found.
  *
  * @param int $expected
  *            the expected number of components.
  */
 public function __construct($type, $tag, $found, $expected)
 {
     parent::__construct('Wrong number of components found for %s tag: %d. ' . 'Expected %d.', PelTag::getName($type, $tag), $found, $expected);
     $this->tag = $tag;
     $this->type = $type;
 }
 /**
  * Construct a new exception indicating an invalid format.
  *
  * @param int $type
  *            the type of IFD.
  *
  * @param PelTag $tag
  *            the tag for which the violation was found.
  *
  * @param PelFormat $found
  *            the format found.
  *
  * @param PelFormat $expected
  *            the expected format.
  */
 public function __construct($type, $tag, $found, $expected)
 {
     parent::__construct('Unexpected format found for %s tag: PelFormat::%s. ' . 'Expected PelFormat::%s instead.', PelTag::getName($type, $tag), strtoupper(PelFormat::getName($found)), strtoupper(PelFormat::getName($expected)));
     $this->tag = $tag;
     $this->type = $type;
 }