Initial commit

1 files changed, 176 insertions, 0 deletions

diff --git a/includes/getid3/module.audio.vqf.php b/includes/getid3/module.audio.vqf.php
new file mode 100644
index 0000000..55c7881
--- /dev/null
+++ b/includes/getid3/module.audio.vqf.php
@@ -0,0 +1,176 @@
+<?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.audio.vqf.php                                        //
+// module for analyzing VQF audio files                        //
+// dependencies: NONE                                          //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
+	exit;
+}
+
+class getid3_vqf extends getid3_handler
+{
+	/**
+	 * @return bool
+	 */
+	public function Analyze() {
+		$info = &$this->getid3->info;
+
+		// based loosely on code from TTwinVQ by Jurgen Faul <jfaulØgmx*de>
+		// http://jfaul.de/atl  or  http://j-faul.virtualave.net/atl/atl.html
+
+		$info['fileformat']            = 'vqf';
+		$info['audio']['dataformat']   = 'vqf';
+		$info['audio']['bitrate_mode'] = 'cbr';
+		$info['audio']['lossless']     = false;
+
+		// shortcut
+		$info['vqf']['raw'] = array();
+		$thisfile_vqf               = &$info['vqf'];
+		$thisfile_vqf_raw           = &$thisfile_vqf['raw'];
+
+		$this->fseek($info['avdataoffset']);
+		$VQFheaderData = $this->fread(16);
+
+		$offset = 0;
+		$thisfile_vqf_raw['header_tag'] = substr($VQFheaderData, $offset, 4);
+		$magic = 'TWIN';
+		if ($thisfile_vqf_raw['header_tag'] != $magic) {
+			$this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($thisfile_vqf_raw['header_tag']).'"');
+			unset($info['vqf']);
+			unset($info['fileformat']);
+			return false;
+		}
+		$offset += 4;
+		$thisfile_vqf_raw['version'] =                           substr($VQFheaderData, $offset, 8);
+		$offset += 8;
+		$thisfile_vqf_raw['size']    = getid3_lib::BigEndian2Int(substr($VQFheaderData, $offset, 4));
+		$offset += 4;
+
+		while ($this->ftell() < $info['avdataend']) {
+
+			$ChunkBaseOffset = $this->ftell();
+			$chunkoffset = 0;
+			$ChunkData = $this->fread(8);
+			$ChunkName = substr($ChunkData, $chunkoffset, 4);
+			if ($ChunkName == 'DATA') {
+				$info['avdataoffset'] = $ChunkBaseOffset;
+				break;
+			}
+			$chunkoffset += 4;
+			$ChunkSize = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
+			$chunkoffset += 4;
+			if ($ChunkSize > ($info['avdataend'] - $this->ftell())) {
+				$this->error('Invalid chunk size ('.$ChunkSize.') for chunk "'.$ChunkName.'" at offset '.$ChunkBaseOffset);
+				break;
+			}
+			if ($ChunkSize > 0) {
+				$ChunkData .= $this->fread($ChunkSize);
+			}
+
+			switch ($ChunkName) {
+				case 'COMM':
+					// shortcut
+					$thisfile_vqf['COMM'] = array();
+					$thisfile_vqf_COMM    = &$thisfile_vqf['COMM'];
+
+					$thisfile_vqf_COMM['channel_mode']   = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
+					$chunkoffset += 4;
+					$thisfile_vqf_COMM['bitrate']        = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
+					$chunkoffset += 4;
+					$thisfile_vqf_COMM['sample_rate']    = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
+					$chunkoffset += 4;
+					$thisfile_vqf_COMM['security_level'] = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
+					$chunkoffset += 4;
+
+					$info['audio']['channels']        = $thisfile_vqf_COMM['channel_mode'] + 1;
+					$info['audio']['sample_rate']     = $this->VQFchannelFrequencyLookup($thisfile_vqf_COMM['sample_rate']);
+					$info['audio']['bitrate']         = $thisfile_vqf_COMM['bitrate'] * 1000;
+					$info['audio']['encoder_options'] = 'CBR' . ceil($info['audio']['bitrate']/1000);
+
+					if ($info['audio']['bitrate'] == 0) {
+						$this->error('Corrupt VQF file: bitrate_audio == zero');
+						return false;
+					}
+					break;
+
+				case 'NAME':
+				case 'AUTH':
+				case '(c) ':
+				case 'FILE':
+				case 'COMT':
+				case 'ALBM':
+					$thisfile_vqf['comments'][$this->VQFcommentNiceNameLookup($ChunkName)][] = trim(substr($ChunkData, 8));
+					break;
+
+				case 'DSIZ':
+					$thisfile_vqf['DSIZ'] = getid3_lib::BigEndian2Int(substr($ChunkData, 8, 4));
+					break;
+
+				default:
+					$this->warning('Unhandled chunk type "'.$ChunkName.'" at offset '.$ChunkBaseOffset);
+					break;
+			}
+		}
+
+		$info['playtime_seconds'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['audio']['bitrate'];
+
+		if (isset($thisfile_vqf['DSIZ']) && (($thisfile_vqf['DSIZ'] != ($info['avdataend'] - $info['avdataoffset'] - strlen('DATA'))))) {
+			switch ($thisfile_vqf['DSIZ']) {
+				case 0:
+				case 1:
+					$this->warning('Invalid DSIZ value "'.$thisfile_vqf['DSIZ'].'". This is known to happen with VQF files encoded by Ahead Nero, and seems to be its way of saying this is TwinVQF v'.($thisfile_vqf['DSIZ'] + 1).'.0');
+					$info['audio']['encoder'] = 'Ahead Nero';
+					break;
+
+				default:
+					$this->warning('Probable corrupted file - should be '.$thisfile_vqf['DSIZ'].' bytes, actually '.($info['avdataend'] - $info['avdataoffset'] - strlen('DATA')));
+					break;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * @param int $frequencyid
+	 *
+	 * @return int
+	 */
+	public function VQFchannelFrequencyLookup($frequencyid) {
+		static $VQFchannelFrequencyLookup = array(
+			11 => 11025,
+			22 => 22050,
+			44 => 44100
+		);
+		return (isset($VQFchannelFrequencyLookup[$frequencyid]) ? $VQFchannelFrequencyLookup[$frequencyid] : $frequencyid * 1000);
+	}
+
+	/**
+	 * @param string $shortname
+	 *
+	 * @return string
+	 */
+	public function VQFcommentNiceNameLookup($shortname) {
+		static $VQFcommentNiceNameLookup = array(
+			'NAME' => 'title',
+			'AUTH' => 'artist',
+			'(c) ' => 'copyright',
+			'FILE' => 'filename',
+			'COMT' => 'comment',
+			'ALBM' => 'album'
+		);
+		return (isset($VQFcommentNiceNameLookup[$shortname]) ? $VQFcommentNiceNameLookup[$shortname] : $shortname);
+	}
+
+}