Initial commit

1 files changed, 147 insertions, 0 deletions

diff --git a/includes/getid3/module.graphic.pcd.php b/includes/getid3/module.graphic.pcd.php
new file mode 100644
index 0000000..85fb4c9
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+++ b/includes/getid3/module.graphic.pcd.php
@@ -0,0 +1,147 @@
+<?php
+
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org>               //
+//  available at https://github.com/JamesHeinrich/getID3       //
+//            or https://www.getid3.org                        //
+//            or http://getid3.sourceforge.net                 //
+//  see readme.txt for more details                            //
+/////////////////////////////////////////////////////////////////
+//                                                             //
+// module.graphic.pcd.php                                      //
+// module for analyzing PhotoCD (PCD) Image files              //
+// dependencies: NONE                                          //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
+	exit;
+}
+class getid3_pcd extends getid3_handler
+{
+	public $ExtractData = 0;
+
+	/**
+	 * @return bool
+	 */
+	public function Analyze() {
+		$info = &$this->getid3->info;
+
+		$info['fileformat']          = 'pcd';
+		$info['video']['dataformat'] = 'pcd';
+		$info['video']['lossless']   = false;
+
+
+		$this->fseek($info['avdataoffset'] + 72);
+
+		$PCDflags = $this->fread(1);
+		$PCDisVertical = ((ord($PCDflags) & 0x01) ? true : false);
+
+
+		if ($PCDisVertical) {
+			$info['video']['resolution_x'] = 3072;
+			$info['video']['resolution_y'] = 2048;
+		} else {
+			$info['video']['resolution_x'] = 2048;
+			$info['video']['resolution_y'] = 3072;
+		}
+
+
+		if ($this->ExtractData > 3) {
+
+			$this->error('Cannot extract PSD image data for detail levels above BASE (level-3) because encrypted with Kodak-proprietary compression/encryption.');
+			return false;
+
+		} elseif ($this->ExtractData > 0) {
+
+			$PCD_levels[1] = array( 192,  128, 0x02000); // BASE/16
+			$PCD_levels[2] = array( 384,  256, 0x0B800); // BASE/4
+			$PCD_levels[3] = array( 768,  512, 0x30000); // BASE
+			//$PCD_levels[4] = array(1536, 1024,    ??); // BASE*4  - encrypted with Kodak-proprietary compression/encryption
+			//$PCD_levels[5] = array(3072, 2048,    ??); // BASE*16 - encrypted with Kodak-proprietary compression/encryption
+			//$PCD_levels[6] = array(6144, 4096,    ??); // BASE*64 - encrypted with Kodak-proprietary compression/encryption; PhotoCD-Pro only
+
+			list($PCD_width, $PCD_height, $PCD_dataOffset) = $PCD_levels[3];
+
+			$this->fseek($info['avdataoffset'] + $PCD_dataOffset);
+
+			for ($y = 0; $y < $PCD_height; $y += 2) {
+				// The image-data of these subtypes start at the respective offsets of 02000h, 0b800h and 30000h.
+				// To decode the YcbYr to the more usual RGB-code, three lines of data have to be read, each
+				// consisting of ‘w’ bytes, where ‘w’ is the width of the image-subtype. The first ‘w’ bytes and
+				// the first half of the third ‘w’ bytes contain data for the first RGB-line, the second ‘w’ bytes
+				// and the second half of the third ‘w’ bytes contain data for a second RGB-line.
+
+				$PCD_data_Y1 = $this->fread($PCD_width);
+				$PCD_data_Y2 = $this->fread($PCD_width);
+				$PCD_data_Cb = $this->fread(intval(round($PCD_width / 2)));
+				$PCD_data_Cr = $this->fread(intval(round($PCD_width / 2)));
+
+				for ($x = 0; $x < $PCD_width; $x++) {
+					if ($PCDisVertical) {
+						$info['pcd']['data'][$PCD_width - $x][$y]     = $this->YCbCr2RGB(ord($PCD_data_Y1[$x]), ord($PCD_data_Cb[(int) floor($x / 2)]), ord($PCD_data_Cr[(int) floor($x / 2)]));
+						$info['pcd']['data'][$PCD_width - $x][$y + 1] = $this->YCbCr2RGB(ord($PCD_data_Y2[$x]), ord($PCD_data_Cb[(int) floor($x / 2)]), ord($PCD_data_Cr[(int) floor($x / 2)]));
+					} else {
+						$info['pcd']['data'][$y][$x]                  = $this->YCbCr2RGB(ord($PCD_data_Y1[$x]), ord($PCD_data_Cb[(int) floor($x / 2)]), ord($PCD_data_Cr[(int) floor($x / 2)]));
+						$info['pcd']['data'][$y + 1][$x]              = $this->YCbCr2RGB(ord($PCD_data_Y2[$x]), ord($PCD_data_Cb[(int) floor($x / 2)]), ord($PCD_data_Cr[(int) floor($x / 2)]));
+					}
+				}
+			}
+
+			// Example for plotting extracted data
+			//getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ac3.php', __FILE__, true);
+			//if ($PCDisVertical) {
+			//	$BMPinfo['resolution_x'] = $PCD_height;
+			//	$BMPinfo['resolution_y'] = $PCD_width;
+			//} else {
+			//	$BMPinfo['resolution_x'] = $PCD_width;
+			//	$BMPinfo['resolution_y'] = $PCD_height;
+			//}
+			//$BMPinfo['bmp']['data'] = $info['pcd']['data'];
+			//getid3_bmp::PlotBMP($BMPinfo);
+			//exit;
+
+		}
+
+		return false;
+	}
+
+	/**
+	 * @param int $Y
+	 * @param int $Cb
+	 * @param int $Cr
+	 *
+	 * @return int
+	 */
+	public function YCbCr2RGB($Y, $Cb, $Cr) {
+		static $YCbCr_constants = array();
+		if (empty($YCbCr_constants)) {
+			$YCbCr_constants['red']['Y']    =  0.0054980 * 256;
+			$YCbCr_constants['red']['Cb']   =  0.0000000 * 256;
+			$YCbCr_constants['red']['Cr']   =  0.0051681 * 256;
+			$YCbCr_constants['green']['Y']  =  0.0054980 * 256;
+			$YCbCr_constants['green']['Cb'] = -0.0015446 * 256;
+			$YCbCr_constants['green']['Cr'] = -0.0026325 * 256;
+			$YCbCr_constants['blue']['Y']   =  0.0054980 * 256;
+			$YCbCr_constants['blue']['Cb']  =  0.0079533 * 256;
+			$YCbCr_constants['blue']['Cr']  =  0.0000000 * 256;
+		}
+
+		$RGBcolor = array('red'=>0, 'green'=>0, 'blue'=>0);
+		foreach ($RGBcolor as $rgbname => $dummy) {
+			$RGBcolor[$rgbname] = max(0,
+										min(255,
+											intval(
+												round(
+													($YCbCr_constants[$rgbname]['Y'] * $Y) +
+													($YCbCr_constants[$rgbname]['Cb'] * ($Cb - 156)) +
+													($YCbCr_constants[$rgbname]['Cr'] * ($Cr - 137))
+												)
+											)
+										)
+									);
+		}
+		return (($RGBcolor['red'] * 65536) + ($RGBcolor['green'] * 256) + $RGBcolor['blue']);
+	}
+
+}