X-Git-Url: http://git.cyclocoop.org/?a=blobdiff_plain;f=www%2Fplugins-dist%2Fmedias%2Flib%2Fgetid3%2Fmodule.graphic.pcd.php;fp=www%2Fplugins-dist%2Fmedias%2Flib%2Fgetid3%2Fmodule.graphic.pcd.php;h=c1efaa21830f9d54fef3a294c5b17170543644db;hb=4f443dce95ff6f8221c189880a70c74ce1c1f238;hp=0000000000000000000000000000000000000000;hpb=4a628e9b277d3617535f99d663ca79fa2e891177;p=lhc%2Fweb%2Fwww.git diff --git a/www/plugins-dist/medias/lib/getid3/module.graphic.pcd.php b/www/plugins-dist/medias/lib/getid3/module.graphic.pcd.php new file mode 100644 index 00000000..c1efaa21 --- /dev/null +++ b/www/plugins-dist/medias/lib/getid3/module.graphic.pcd.php @@ -0,0 +1,133 @@ + // +// available at http://getid3.sourceforge.net // +// or http://www.getid3.org // +// also https://github.com/JamesHeinrich/getID3 // +///////////////////////////////////////////////////////////////// +// See readme.txt for more details // +///////////////////////////////////////////////////////////////// +// // +// module.graphic.pcd.php // +// module for analyzing PhotoCD (PCD) Image files // +// dependencies: NONE // +// /// +///////////////////////////////////////////////////////////////// + + +class getid3_pcd extends getid3_handler +{ + public $ExtractData = 0; + + 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) { + + $this->error('Cannot extract PSD image data for detail levels above BASE (level-3) because encrypted with Kodak-proprietary compression/encryption.'); + + } elseif ($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{floor($x / 2)}), ord($PCD_data_Cr{floor($x / 2)})); + $info['pcd']['data'][$PCD_width - $x][$y + 1] = $this->YCbCr2RGB(ord($PCD_data_Y2{$x}), ord($PCD_data_Cb{floor($x / 2)}), ord($PCD_data_Cr{floor($x / 2)})); + } else { + $info['pcd']['data'][$y][$x] = $this->YCbCr2RGB(ord($PCD_data_Y1{$x}), ord($PCD_data_Cb{floor($x / 2)}), ord($PCD_data_Cr{floor($x / 2)})); + $info['pcd']['data'][$y + 1][$x] = $this->YCbCr2RGB(ord($PCD_data_Y2{$x}), ord($PCD_data_Cb{floor($x / 2)}), ord($PCD_data_Cr{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; + + } + + } + + 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']); + } + +}