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-rw-r--r--getid3/module.graphic.gif.php183
1 files changed, 0 insertions, 183 deletions
diff --git a/getid3/module.graphic.gif.php b/getid3/module.graphic.gif.php
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index 986ada3..0000000
--- a/getid3/module.graphic.gif.php
+++ /dev/null
@@ -1,183 +0,0 @@
-<?php
-/////////////////////////////////////////////////////////////////
-/// getID3() by James Heinrich <info@getid3.org> //
-// available at http://getid3.sourceforge.net //
-// or http://www.getid3.org //
-/////////////////////////////////////////////////////////////////
-// See readme.txt for more details //
-/////////////////////////////////////////////////////////////////
-// //
-// module.graphic.gif.php //
-// module for analyzing GIF Image files //
-// dependencies: NONE //
-// ///
-/////////////////////////////////////////////////////////////////
-
-
-class getid3_gif
-{
-
- function getid3_gif(&$fd, &$ThisFileInfo) {
- $ThisFileInfo['fileformat'] = 'gif';
- $ThisFileInfo['video']['dataformat'] = 'gif';
- $ThisFileInfo['video']['lossless'] = true;
- $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;
-
- fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
- $GIFheader = fread($fd, 13);
- $offset = 0;
-
- $ThisFileInfo['gif']['header']['raw']['identifier'] = substr($GIFheader, $offset, 3);
- $offset += 3;
-
- if ($ThisFileInfo['gif']['header']['raw']['identifier'] != 'GIF') {
- $ThisFileInfo['error'][] = 'Expecting "GIF" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['gif']['header']['raw']['identifier'].'"';
- unset($ThisFileInfo['fileformat']);
- unset($ThisFileInfo['gif']);
- return false;
- }
-
- $ThisFileInfo['gif']['header']['raw']['version'] = substr($GIFheader, $offset, 3);
- $offset += 3;
- $ThisFileInfo['gif']['header']['raw']['width'] = getid3_lib::LittleEndian2Int(substr($GIFheader, $offset, 2));
- $offset += 2;
- $ThisFileInfo['gif']['header']['raw']['height'] = getid3_lib::LittleEndian2Int(substr($GIFheader, $offset, 2));
- $offset += 2;
- $ThisFileInfo['gif']['header']['raw']['flags'] = getid3_lib::LittleEndian2Int(substr($GIFheader, $offset, 1));
- $offset += 1;
- $ThisFileInfo['gif']['header']['raw']['bg_color_index'] = getid3_lib::LittleEndian2Int(substr($GIFheader, $offset, 1));
- $offset += 1;
- $ThisFileInfo['gif']['header']['raw']['aspect_ratio'] = getid3_lib::LittleEndian2Int(substr($GIFheader, $offset, 1));
- $offset += 1;
-
- $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['gif']['header']['raw']['width'];
- $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['gif']['header']['raw']['height'];
- $ThisFileInfo['gif']['version'] = $ThisFileInfo['gif']['header']['raw']['version'];
- $ThisFileInfo['gif']['header']['flags']['global_color_table'] = (bool) ($ThisFileInfo['gif']['header']['raw']['flags'] & 0x80);
- if ($ThisFileInfo['gif']['header']['raw']['flags'] & 0x80) {
- // Number of bits per primary color available to the original image, minus 1
- $ThisFileInfo['gif']['header']['bits_per_pixel'] = 3 * ((($ThisFileInfo['gif']['header']['raw']['flags'] & 0x70) >> 4) + 1);
- } else {
- $ThisFileInfo['gif']['header']['bits_per_pixel'] = 0;
- }
- $ThisFileInfo['gif']['header']['flags']['global_color_sorted'] = (bool) ($ThisFileInfo['gif']['header']['raw']['flags'] & 0x40);
- if ($ThisFileInfo['gif']['header']['flags']['global_color_table']) {
- // the number of bytes contained in the Global Color Table. To determine that
- // actual size of the color table, raise 2 to [the value of the field + 1]
- $ThisFileInfo['gif']['header']['global_color_size'] = pow(2, ($ThisFileInfo['gif']['header']['raw']['flags'] & 0x07) + 1);
- $ThisFileInfo['video']['bits_per_sample'] = ($ThisFileInfo['gif']['header']['raw']['flags'] & 0x07) + 1;
- } else {
- $ThisFileInfo['gif']['header']['global_color_size'] = 0;
- }
- if ($ThisFileInfo['gif']['header']['raw']['aspect_ratio'] != 0) {
- // Aspect Ratio = (Pixel Aspect Ratio + 15) / 64
- $ThisFileInfo['gif']['header']['aspect_ratio'] = ($ThisFileInfo['gif']['header']['raw']['aspect_ratio'] + 15) / 64;
- }
-
-// if ($ThisFileInfo['gif']['header']['flags']['global_color_table']) {
-// $GIFcolorTable = fread($fd, 3 * $ThisFileInfo['gif']['header']['global_color_size']);
-// $offset = 0;
-// for ($i = 0; $i < $ThisFileInfo['gif']['header']['global_color_size']; $i++) {
-// $red = getid3_lib::LittleEndian2Int(substr($GIFcolorTable, $offset++, 1));
-// $green = getid3_lib::LittleEndian2Int(substr($GIFcolorTable, $offset++, 1));
-// $blue = getid3_lib::LittleEndian2Int(substr($GIFcolorTable, $offset++, 1));
-// $ThisFileInfo['gif']['global_color_table'][$i] = (($red << 16) | ($green << 8) | ($blue));
-// }
-// }
-//
-// // Image Descriptor
-// while (!feof($fd)) {
-// $NextBlockTest = fread($fd, 1);
-// switch ($NextBlockTest) {
-//
-// case ',': // ',' - Image separator character
-//
-// $ImageDescriptorData = $NextBlockTest.fread($fd, 9);
-// $ImageDescriptor = array();
-// $ImageDescriptor['image_left'] = getid3_lib::LittleEndian2Int(substr($ImageDescriptorData, 1, 2));
-// $ImageDescriptor['image_top'] = getid3_lib::LittleEndian2Int(substr($ImageDescriptorData, 3, 2));
-// $ImageDescriptor['image_width'] = getid3_lib::LittleEndian2Int(substr($ImageDescriptorData, 5, 2));
-// $ImageDescriptor['image_height'] = getid3_lib::LittleEndian2Int(substr($ImageDescriptorData, 7, 2));
-// $ImageDescriptor['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ImageDescriptorData, 9, 1));
-// $ImageDescriptor['flags']['use_local_color_map'] = (bool) ($ImageDescriptor['flags_raw'] & 0x80);
-// $ImageDescriptor['flags']['image_interlaced'] = (bool) ($ImageDescriptor['flags_raw'] & 0x40);
-// $ThisFileInfo['gif']['image_descriptor'][] = $ImageDescriptor;
-//
-// if ($ImageDescriptor['flags']['use_local_color_map']) {
-//
-// $ThisFileInfo['warning'][] = 'This version of getID3() cannot parse local color maps for GIFs';
-// return true;
-//
-// }
-//echo 'Start of raster data: '.ftell($fd).'<BR>';
-// $RasterData = array();
-// $RasterData['code_size'] = getid3_lib::LittleEndian2Int(fread($fd, 1));
-// $RasterData['block_byte_count'] = getid3_lib::LittleEndian2Int(fread($fd, 1));
-// $ThisFileInfo['gif']['raster_data'][count($ThisFileInfo['gif']['image_descriptor']) - 1] = $RasterData;
-//
-// $CurrentCodeSize = $RasterData['code_size'] + 1;
-// for ($i = 0; $i < pow(2, $RasterData['code_size']); $i++) {
-// $DefaultDataLookupTable[$i] = chr($i);
-// }
-// $DefaultDataLookupTable[pow(2, $RasterData['code_size']) + 0] = ''; // Clear Code
-// $DefaultDataLookupTable[pow(2, $RasterData['code_size']) + 1] = ''; // End Of Image Code
-//
-//
-// $NextValue = $this->GetLSBits($fd, $CurrentCodeSize);
-// echo 'Clear Code: '.$NextValue.'<BR>';
-//
-// $NextValue = $this->GetLSBits($fd, $CurrentCodeSize);
-// echo 'First Color: '.$NextValue.'<BR>';
-//
-// $Prefix = $NextValue;
-//$i = 0;
-// while ($i++ < 20) {
-// $NextValue = $this->GetLSBits($fd, $CurrentCodeSize);
-// echo $NextValue.'<BR>';
-// }
-//return true;
-// break;
-//
-// case '!':
-// // GIF Extension Block
-// $ExtensionBlockData = $NextBlockTest.fread($fd, 2);
-// $ExtensionBlock = array();
-// $ExtensionBlock['function_code'] = getid3_lib::LittleEndian2Int(substr($ExtensionBlockData, 1, 1));
-// $ExtensionBlock['byte_length'] = getid3_lib::LittleEndian2Int(substr($ExtensionBlockData, 2, 1));
-// $ExtensionBlock['data'] = fread($fd, $ExtensionBlock['byte_length']);
-// $ThisFileInfo['gif']['extension_blocks'][] = $ExtensionBlock;
-// break;
-//
-// case ';':
-// $ThisFileInfo['gif']['terminator_offset'] = ftell($fd) - 1;
-// // GIF Terminator
-// break;
-//
-// default:
-// break;
-//
-//
-// }
-// }
-
- return true;
- }
-
-
- function GetLSBits($fd, $bits) {
- static $bitbuffer = '';
- while (strlen($bitbuffer) < $bits) {
-//echo 'Read another byte: '.ftell($fd).'<BR>';
- $bitbuffer = str_pad(decbin(ord(fread($fd, 1))), 8, '0', STR_PAD_LEFT).$bitbuffer;
- }
-
- $value = bindec(substr($bitbuffer, 0 - $bits));
- $bitbuffer = substr($bitbuffer, 0, 0 - $bits);
-
- return $value;
- }
-
-}
-
-
-?> \ No newline at end of file
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