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home/karenpetzb/library/Zend/Pdf/FileParser/Image/Png.php 0000604 00000025555 15071325037 0017244 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @package Zend_Pdf
* @subpackage FileParser
* @copyright Copyright (c) 2006 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Pdf_FileParser_Image */
require_once 'Zend/Pdf/FileParser/Image.php';
/**
* Abstract base class for Image file parsers.
*
* @package Zend_Pdf
* @subpackage FileParser
* @copyright Copyright (c) 2006 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Pdf_FileParser_Image_Png extends Zend_Pdf_FileParser_Image
{
protected $_isPNG;
protected $_width;
protected $_height;
protected $_bits;
protected $_color;
protected $_compression;
protected $_preFilter;
protected $_interlacing;
protected $_imageData;
protected $_paletteData;
protected $_transparencyData;
/**** Public Interface ****/
public function getWidth() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_width;
}
public function getHeight() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_width;
}
public function getBitDepth() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_bits;
}
public function getColorSpace() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_color;
}
public function getCompressionStrategy() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_compression;
}
public function getPaethFilter() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_preFilter;
}
public function getInterlacingMode() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_interlacing;
}
public function getRawImageData() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_imageData;
}
public function getRawPaletteData() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_paletteData;
}
public function getRawTransparencyData() {
if(!$this->_isParsed) {
$this->parse();
}
return $this->_transparencyData;
}
/* Semi-Concrete Class Implementation */
/**
* Verifies that the image file is in the expected format.
*
* @throws Zend_Pdf_Exception
*/
public function screen()
{
if ($this->_isScreened) {
return;
}
return $this->_checkSignature();
}
/**
* Reads and parses the image data from the file on disk.
*
* @throws Zend_Pdf_Exception
*/
public function parse()
{
if ($this->_isParsed) {
return;
}
/* Screen the font file first, if it hasn't been done yet.
*/
$this->screen();
$this->_parseIHDRChunk();
$this->_parseChunks();
}
protected function _parseSignature() {
$this->moveToOffset(1); //Skip the first byte (%)
if('PNG' != $this->readBytes(3)) {
$this->_isPNG = false;
} else {
$this->_isPNG = true;
}
}
protected function _checkSignature() {
if(!isset($this->_isPNG)) {
$this->_parseSignature();
}
return $this->_isPNG;
}
protected function _parseChunks() {
$this->moveToOffset(33); //Variable chunks start at the end of IHDR
//Start processing chunks. If there are no more bytes to read parsing is complete.
$size = $this->getSize();
while($size - $this->getOffset() >= 8) {
$chunkLength = $this->readUInt(4);
if($chunkLength < 0 || ($chunkLength + $this->getOffset() + 4) > $size) {
throw new Zend_Pdf_Exception("PNG Corrupt: Invalid Chunk Size In File.");
}
$chunkType = $this->readBytes(4);
$offset = $this->getOffset();
//If we know how to process the chunk, do it here, else ignore the chunk and move on to the next
switch($chunkType) {
case 'IDAT': // This chunk may appear more than once. It contains the actual image data.
$this->_parseIDATChunk($offset, $chunkLength);
break;
case 'PLTE': // This chunk contains the image palette.
$this->_parsePLTEChunk($offset, $chunkLength);
break;
case 'tRNS': // This chunk contains non-alpha channel transparency data
$this->_parseTRNSChunk($offset, $chunkLength);
break;
case 'IEND':
break 2; //End the loop too
//@TODO Implement the rest of the PNG chunks. (There are many not implemented here)
}
if($offset + $chunkLength + 4 < $size) {
$this->moveToOffset($offset + $chunkLength + 4); //Skip past the data finalizer. (Don't rely on the parse to leave the offsets correct)
}
}
if(empty($this->_imageData)) {
throw new Zend_Pdf_Exception ( "This PNG is corrupt. All png must contain IDAT chunks." );
}
}
protected function _parseIHDRChunk() {
$this->moveToOffset(12); //IHDR must always start at offset 12 and run for 17 bytes
if(!$this->readBytes(4) == 'IHDR') {
throw new Zend_Pdf_Exception( "This PNG is corrupt. The first chunk in a PNG file must be IHDR." );
}
$this->_width = $this->readUInt(4);
$this->_height = $this->readUInt(4);
$this->_bits = $this->readInt(1);
$this->_color = $this->readInt(1);
$this->_compression = $this->readInt(1);
$this->_preFilter = $this->readInt(1);
$this->_interlacing = $this->readInt(1);
if($this->_interlacing != Zend_Pdf_Image::PNG_INTERLACING_DISABLED) {
throw new Zend_Pdf_Exception( "Only non-interlaced images are currently supported." );
}
}
protected function _parseIDATChunk($chunkOffset, $chunkLength) {
$this->moveToOffset($chunkOffset);
if(!isset($this->_imageData)) {
$this->_imageData = $this->readBytes($chunkLength);
} else {
$this->_imageData .= $this->readBytes($chunkLength);
}
}
protected function _parsePLTEChunk($chunkOffset, $chunkLength) {
$this->moveToOffset($chunkOffset);
$this->_paletteData = $this->readBytes($chunkLength);
}
protected function _parseTRNSChunk($chunkOffset, $chunkLength) {
$this->moveToOffset($chunkOffset);
//Processing of tRNS data varies dependending on the color depth
switch($this->_color) {
case Zend_Pdf_Image::PNG_CHANNEL_GRAY:
$baseColor = $this->readInt(1);
$this->_transparencyData = array($baseColor, $baseColor);
break;
case Zend_Pdf_Image::PNG_CHANNEL_RGB:
//@TODO Fix this hack.
//This parser cheats and only uses the lsb's (and only works with < 16 bit depth images)
/*
From the standard:
For color type 2 (truecolor), the tRNS chunk contains a single RGB color value, stored in the format:
Red: 2 bytes, range 0 .. (2^bitdepth)-1
Green: 2 bytes, range 0 .. (2^bitdepth)-1
Blue: 2 bytes, range 0 .. (2^bitdepth)-1
(If the image bit depth is less than 16, the least significant bits are used and the others are 0.)
Pixels of the specified color value are to be treated as transparent (equivalent to alpha value 0);
all other pixels are to be treated as fully opaque (alpha value 2bitdepth-1).
*/
$red = $this->readInt(1);
$this->skipBytes(1);
$green = $this->readInt(1);
$this->skipBytes(1);
$blue = $this->readInt(1);
$this->_transparencyData = array($red, $red, $green, $green, $blue, $blue);
break;
case Zend_Pdf_Image::PNG_CHANNEL_INDEXED:
//@TODO Fix this hack.
//This parser cheats too. It only masks the first color in the palette.
/*
From the standard:
For color type 3 (indexed color), the tRNS chunk contains a series of one-byte alpha values, corresponding to entries in the PLTE chunk:
Alpha for palette index 0: 1 byte
Alpha for palette index 1: 1 byte
...etc...
Each entry indicates that pixels of the corresponding palette index must be treated as having the specified alpha value.
Alpha values have the same interpretation as in an 8-bit full alpha channel: 0 is fully transparent, 255 is fully opaque,
regardless of image bit depth. The tRNS chunk must not contain more alpha values than there are palette entries,
but tRNS can contain fewer values than there are palette entries. In this case, the alpha value for all remaining palette
entries is assumed to be 255. In the common case in which only palette index 0 need be made transparent, only a one-byte
tRNS chunk is needed.
*/
$tmpData = $this->readBytes($chunkLength);
if(($trnsIdx = strpos($tmpData, chr(0))) !== false) {
$this->_transparencyData = array($trnsIdx, $trnsIdx);
}
break;
case Zend_Pdf_Image::PNG_CHANNEL_GRAY_ALPHA:
//Fall through to the next case
case Zend_Pdf_Image::PING_CHANNEL_RGB_ALPHA:
throw new Zend_Pdf_Exception( "tRNS chunk illegal for Alpha Channel Images" );
break;
}
}
}
home/karenpetzb/library/Zend/Pdf/Resource/Image/Png.php 0000604 00000041423 15071402105 0016757 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Pdf_Resource_Image */
require_once 'Zend/Pdf/Resource/Image.php';
/** Zend_Pdf_Exception */
require_once 'Zend/Pdf/Exception.php';
/** Zend_Pdf_Element_Numeric */
require_once 'Zend/Pdf/Element/Numeric.php';
/** Zend_Pdf_Element_Name */
require_once 'Zend/Pdf/Element/Name.php';
/** Zend_Pdf_ElementFactory */
require_once 'Zend/Pdf/ElementFactory.php';
/**
* PNG image
*
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Pdf_Resource_Image_Png extends Zend_Pdf_Resource_Image
{
const PNG_COMPRESSION_DEFAULT_STRATEGY = 0;
const PNG_COMPRESSION_FILTERED = 1;
const PNG_COMPRESSION_HUFFMAN_ONLY = 2;
const PNG_COMPRESSION_RLE = 3;
const PNG_FILTER_NONE = 0;
const PNG_FILTER_SUB = 1;
const PNG_FILTER_UP = 2;
const PNG_FILTER_AVERAGE = 3;
const PNG_FILTER_PAETH = 4;
const PNG_INTERLACING_DISABLED = 0;
const PNG_INTERLACING_ENABLED = 1;
const PNG_CHANNEL_GRAY = 0;
const PNG_CHANNEL_RGB = 2;
const PNG_CHANNEL_INDEXED = 3;
const PNG_CHANNEL_GRAY_ALPHA = 4;
const PNG_CHANNEL_RGB_ALPHA = 6;
protected $_width;
protected $_height;
protected $_imageProperties;
/**
* Object constructor
*
* @param string $imageFileName
* @throws Zend_Pdf_Exception
* @todo Add compression conversions to support compression strategys other than PNG_COMPRESSION_DEFAULT_STRATEGY.
* @todo Add pre-compression filtering.
* @todo Add interlaced image handling.
* @todo Add support for 16-bit images. Requires PDF version bump to 1.5 at least.
* @todo Add processing for all PNG chunks defined in the spec. gAMA etc.
* @todo Fix tRNS chunk support for Indexed Images to a SMask.
*/
public function __construct($imageFileName)
{
if (($imageFile = @fopen($imageFileName, 'rb')) === false ) {
throw new Zend_Pdf_Exception( "Can not open '$imageFileName' file for reading." );
}
parent::__construct();
//Check if the file is a PNG
fseek($imageFile, 1, SEEK_CUR); //First signature byte (%)
if ('PNG' != fread($imageFile, 3)) {
throw new Zend_Pdf_Exception('Image is not a PNG');
}
fseek($imageFile, 12, SEEK_CUR); //Signature bytes (Includes the IHDR chunk) IHDR processed linerarly because it doesnt contain a variable chunk length
$wtmp = unpack('Ni',fread($imageFile, 4)); //Unpack a 4-Byte Long
$width = $wtmp['i'];
$htmp = unpack('Ni',fread($imageFile, 4));
$height = $htmp['i'];
$bits = ord(fread($imageFile, 1)); //Higher than 8 bit depths are only supported in later versions of PDF.
$color = ord(fread($imageFile, 1));
$compression = ord(fread($imageFile, 1));
$prefilter = ord(fread($imageFile,1));
if (($interlacing = ord(fread($imageFile,1))) != Zend_Pdf_Resource_Image_Png::PNG_INTERLACING_DISABLED) {
throw new Zend_Pdf_Exception( "Only non-interlaced images are currently supported." );
}
$this->_width = $width;
$this->_height = $height;
$this->_imageProperties = array();
$this->_imageProperties['bitDepth'] = $bits;
$this->_imageProperties['pngColorType'] = $color;
$this->_imageProperties['pngFilterType'] = $prefilter;
$this->_imageProperties['pngCompressionType'] = $compression;
$this->_imageProperties['pngInterlacingType'] = $interlacing;
fseek($imageFile, 4, SEEK_CUR); //4 Byte Ending Sequence
$imageData = '';
/*
* The following loop processes PNG chunks. 4 Byte Longs are packed first give the chunk length
* followed by the chunk signature, a four byte code. IDAT and IEND are manditory in any PNG.
*/
while(($chunkLengthBytes = fread($imageFile, 4)) !== false) {
$chunkLengthtmp = unpack('Ni', $chunkLengthBytes);
$chunkLength = $chunkLengthtmp['i'];
$chunkType = fread($imageFile, 4);
switch($chunkType) {
case 'IDAT': //Image Data
/*
* Reads the actual image data from the PNG file. Since we know at this point that the compression
* strategy is the default strategy, we also know that this data is Zip compressed. We will either copy
* the data directly to the PDF and provide the correct FlateDecode predictor, or decompress the data
* decode the filters and output the data as a raw pixel map.
*/
$imageData .= fread($imageFile, $chunkLength);
fseek($imageFile, 4, SEEK_CUR);
break;
case 'PLTE': //Palette
$paletteData = fread($imageFile, $chunkLength);
fseek($imageFile, 4, SEEK_CUR);
break;
case 'tRNS': //Basic (non-alpha channel) transparency.
$trnsData = fread($imageFile, $chunkLength);
switch ($color) {
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY:
$baseColor = ord(substr($trnsData, 1, 1));
$transparencyData = array(new Zend_Pdf_Element_Numeric($baseColor), new Zend_Pdf_Element_Numeric($baseColor));
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB:
$red = ord(substr($trnsData,1,1));
$green = ord(substr($trnsData,3,1));
$blue = ord(substr($trnsData,5,1));
$transparencyData = array(new Zend_Pdf_Element_Numeric($red), new Zend_Pdf_Element_Numeric($red), new Zend_Pdf_Element_Numeric($green), new Zend_Pdf_Element_Numeric($green), new Zend_Pdf_Element_Numeric($blue), new Zend_Pdf_Element_Numeric($blue));
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_INDEXED:
//Find the first transparent color in the index, we will mask that. (This is a bit of a hack. This should be a SMask and mask all entries values).
if(($trnsIdx = strpos($trnsData, chr(0))) !== false) {
$transparencyData = array(new Zend_Pdf_Element_Numeric($trnsIdx), new Zend_Pdf_Element_Numeric($trnsIdx));
}
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY_ALPHA:
// Fall through to the next case
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA:
throw new Zend_Pdf_Exception( "tRNS chunk illegal for Alpha Channel Images" );
break;
}
fseek($imageFile, 4, SEEK_CUR); //4 Byte Ending Sequence
break;
case 'IEND';
break 2; //End the loop too
default:
fseek($imageFile, $chunkLength + 4, SEEK_CUR); //Skip the section
break;
}
}
fclose($imageFile);
$compressed = true;
$imageDataTmp = '';
$smaskData = '';
switch ($color) {
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB:
$colorSpace = new Zend_Pdf_Element_Name('DeviceRGB');
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY:
$colorSpace = new Zend_Pdf_Element_Name('DeviceGray');
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_INDEXED:
if(empty($paletteData)) {
throw new Zend_Pdf_Exception( "PNG Corruption: No palette data read for indexed type PNG." );
}
$colorSpace = new Zend_Pdf_Element_Array();
$colorSpace->items[] = new Zend_Pdf_Element_Name('Indexed');
$colorSpace->items[] = new Zend_Pdf_Element_Name('DeviceRGB');
$colorSpace->items[] = new Zend_Pdf_Element_Numeric((strlen($paletteData)/3-1));
$paletteObject = $this->_objectFactory->newObject(new Zend_Pdf_Element_String_Binary($paletteData));
$colorSpace->items[] = $paletteObject;
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_GRAY_ALPHA:
/*
* To decode PNG's with alpha data we must create two images from one. One image will contain the Gray data
* the other will contain the Gray transparency overlay data. The former will become the object data and the latter
* will become the Shadow Mask (SMask).
*/
if($bits > 8) {
throw new Zend_Pdf_Exception("Alpha PNGs with bit depth > 8 are not yet supported");
}
$colorSpace = new Zend_Pdf_Element_Name('DeviceGray');
$decodingObjFactory = Zend_Pdf_ElementFactory::createFactory(1);
$decodingStream = $decodingObjFactory->newStreamObject($imageData);
$decodingStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodingStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary();
$decodingStream->dictionary->DecodeParms->Predictor = new Zend_Pdf_Element_Numeric(15);
$decodingStream->dictionary->DecodeParms->Columns = new Zend_Pdf_Element_Numeric($width);
$decodingStream->dictionary->DecodeParms->Colors = new Zend_Pdf_Element_Numeric(2); //GreyAlpha
$decodingStream->dictionary->DecodeParms->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$decodingStream->skipFilters();
$pngDataRawDecoded = $decodingStream->value;
//Iterate every pixel and copy out gray data and alpha channel (this will be slow)
for($pixel = 0, $pixelcount = ($width * $height); $pixel < $pixelcount; $pixel++) {
$imageDataTmp .= $pngDataRawDecoded[($pixel*2)];
$smaskData .= $pngDataRawDecoded[($pixel*2)+1];
}
$compressed = false;
$imageData = $imageDataTmp; //Overwrite image data with the gray channel without alpha
break;
case Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA:
/*
* To decode PNG's with alpha data we must create two images from one. One image will contain the RGB data
* the other will contain the Gray transparency overlay data. The former will become the object data and the latter
* will become the Shadow Mask (SMask).
*/
if($bits > 8) {
throw new Zend_Pdf_Exception("Alpha PNGs with bit depth > 8 are not yet supported");
}
$colorSpace = new Zend_Pdf_Element_Name('DeviceRGB');
$decodingObjFactory = Zend_Pdf_ElementFactory::createFactory(1);
$decodingStream = $decodingObjFactory->newStreamObject($imageData);
$decodingStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodingStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary();
$decodingStream->dictionary->DecodeParms->Predictor = new Zend_Pdf_Element_Numeric(15);
$decodingStream->dictionary->DecodeParms->Columns = new Zend_Pdf_Element_Numeric($width);
$decodingStream->dictionary->DecodeParms->Colors = new Zend_Pdf_Element_Numeric(4); //RGBA
$decodingStream->dictionary->DecodeParms->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$decodingStream->skipFilters();
$pngDataRawDecoded = $decodingStream->value;
//Iterate every pixel and copy out rgb data and alpha channel (this will be slow)
for($pixel = 0, $pixelcount = ($width * $height); $pixel < $pixelcount; $pixel++) {
$imageDataTmp .= $pngDataRawDecoded[($pixel*4)+0] . $pngDataRawDecoded[($pixel*4)+1] . $pngDataRawDecoded[($pixel*4)+2];
$smaskData .= $pngDataRawDecoded[($pixel*4)+3];
}
$compressed = false;
$imageData = $imageDataTmp; //Overwrite image data with the RGB channel without alpha
break;
default:
throw new Zend_Pdf_Exception( "PNG Corruption: Invalid color space." );
}
if(empty($imageData)) {
throw new Zend_Pdf_Exception( "Corrupt PNG Image. Mandatory IDAT chunk not found." );
}
$imageDictionary = $this->_resource->dictionary;
if(!empty($smaskData)) {
/*
* Includes the Alpha transparency data as a Gray Image, then assigns the image as the Shadow Mask for the main image data.
*/
$smaskStream = $this->_objectFactory->newStreamObject($smaskData);
$smaskStream->dictionary->Type = new Zend_Pdf_Element_Name('XObject');
$smaskStream->dictionary->Subtype = new Zend_Pdf_Element_Name('Image');
$smaskStream->dictionary->Width = new Zend_Pdf_Element_Numeric($width);
$smaskStream->dictionary->Height = new Zend_Pdf_Element_Numeric($height);
$smaskStream->dictionary->ColorSpace = new Zend_Pdf_Element_Name('DeviceGray');
$smaskStream->dictionary->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->SMask = $smaskStream;
// Encode stream with FlateDecode filter
$smaskStreamDecodeParms = array();
$smaskStreamDecodeParms['Predictor'] = new Zend_Pdf_Element_Numeric(15);
$smaskStreamDecodeParms['Columns'] = new Zend_Pdf_Element_Numeric($width);
$smaskStreamDecodeParms['Colors'] = new Zend_Pdf_Element_Numeric(1);
$smaskStreamDecodeParms['BitsPerComponent'] = new Zend_Pdf_Element_Numeric(8);
$smaskStream->dictionary->DecodeParms = new Zend_Pdf_Element_Dictionary($smaskStreamDecodeParms);
$smaskStream->dictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
}
if(!empty($transparencyData)) {
//This is experimental and not properly tested.
$imageDictionary->Mask = new Zend_Pdf_Element_Array($transparencyData);
}
$imageDictionary->Width = new Zend_Pdf_Element_Numeric($width);
$imageDictionary->Height = new Zend_Pdf_Element_Numeric($height);
$imageDictionary->ColorSpace = $colorSpace;
$imageDictionary->BitsPerComponent = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->Filter = new Zend_Pdf_Element_Name('FlateDecode');
$decodeParms = array();
$decodeParms['Predictor'] = new Zend_Pdf_Element_Numeric(15); // Optimal prediction
$decodeParms['Columns'] = new Zend_Pdf_Element_Numeric($width);
$decodeParms['Colors'] = new Zend_Pdf_Element_Numeric((($color==Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB || $color==Zend_Pdf_Resource_Image_Png::PNG_CHANNEL_RGB_ALPHA)?(3):(1)));
$decodeParms['BitsPerComponent'] = new Zend_Pdf_Element_Numeric($bits);
$imageDictionary->DecodeParms = new Zend_Pdf_Element_Dictionary($decodeParms);
//Include only the image IDAT section data.
$this->_resource->value = $imageData;
//Skip double compression
if ($compressed) {
$this->_resource->skipFilters();
}
}
/**
* Image width
*/
public function getPixelWidth() {
return $this->_width;
}
/**
* Image height
*/
public function getPixelHeight() {
return $this->_height;
}
/**
* Image properties
*/
public function getProperties() {
return $this->_imageProperties;
}
}