[SPIP][PLUGINS] v3.0-->v3.2

[lhc/web/www.git] / www / plugins-dist / medias / lib / getid3 / module.audio.vqf.php

diff --git a/www/plugins-dist/medias/lib/getid3/module.audio.vqf.php b/www/plugins-dist/medias/lib/getid3/module.audio.vqf.php
new file mode 100644 (file)
index 0000000..a6a391c
--- /dev/null
+++ b/www/plugins-dist/medias/lib/getid3/module.audio.vqf.php
@@ -0,0 +1,160 @@
+<?php
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org>               //
+//  available at http://getid3.sourceforge.net                 //
+//            or http://www.getid3.org                         //
+//          also https://github.com/JamesHeinrich/getID3       //
+/////////////////////////////////////////////////////////////////
+// See readme.txt for more details                             //
+/////////////////////////////////////////////////////////////////
+//                                                             //
+// module.audio.vqf.php                                        //
+// module for analyzing VQF audio files                        //
+// dependencies: NONE                                          //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+
+class getid3_vqf extends getid3_handler
+{
+       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'] - $info['avdataoffset'] - strlen('DATA')));
+                                       break;
+                       }
+               }
+
+               return true;
+       }
+
+       public function VQFchannelFrequencyLookup($frequencyid) {
+               static $VQFchannelFrequencyLookup = array(
+                       11 => 11025,
+                       22 => 22050,
+                       44 => 44100
+               );
+               return (isset($VQFchannelFrequencyLookup[$frequencyid]) ? $VQFchannelFrequencyLookup[$frequencyid] : $frequencyid * 1000);
+       }
+
+       public function VQFcommentNiceNameLookup($shortname) {
+               static $VQFcommentNiceNameLookup = array(
+                       'NAME' => 'title',
+                       'AUTH' => 'artist',
+                       '(c) ' => 'copyright',
+                       'FILE' => 'filename',
+                       'COMT' => 'comment',
+                       'ALBM' => 'album'
+               );
+               return (isset($VQFcommentNiceNameLookup[$shortname]) ? $VQFcommentNiceNameLookup[$shortname] : $shortname);
+       }
+
+}