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

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

diff --git a/www/plugins-dist/medias/lib/getid3/module.audio.dsf.php b/www/plugins-dist/medias/lib/getid3/module.audio.dsf.php
new file mode 100644 (file)
index 0000000..50be37c
--- /dev/null
+++ b/www/plugins-dist/medias/lib/getid3/module.audio.dsf.php
@@ -0,0 +1,133 @@
+<?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.dsf.php                                        //
+// module for analyzing dsf/DSF Audio files                    //
+// dependencies: module.tag.id3v2.php                          //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v2.php', __FILE__, true);
+
+class getid3_dsf extends getid3_handler
+{
+
+       public function Analyze() {
+               $info = &$this->getid3->info;
+
+               $info['fileformat']            = 'dsf';
+               $info['audio']['dataformat']   = 'dsf';
+               $info['audio']['lossless']     = true;
+               $info['audio']['bitrate_mode'] = 'cbr';
+
+               $this->fseek($info['avdataoffset']);
+               $dsfheader = $this->fread(28 + 12);
+
+               $headeroffset = 0;
+               $info['dsf']['dsd']['magic'] = substr($dsfheader, $headeroffset, 4);
+               $headeroffset += 4;
+               $magic = 'DSD ';
+               if ($info['dsf']['dsd']['magic'] != $magic) {
+                       $this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['dsf']['dsd']['magic']).'"');
+                       unset($info['fileformat']);
+                       unset($info['audio']);
+                       unset($info['dsf']);
+                       return false;
+               }
+               $info['dsf']['dsd']['dsd_chunk_size']     = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); // should be 28
+               $headeroffset += 8;
+               $info['dsf']['dsd']['dsf_file_size']      = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8));
+               $headeroffset += 8;
+               $info['dsf']['dsd']['meta_chunk_offset']  = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8));
+               $headeroffset += 8;
+
+
+               $info['dsf']['fmt']['magic'] = substr($dsfheader, $headeroffset, 4);
+               $headeroffset += 4;
+               $magic = 'fmt ';
+               if ($info['dsf']['fmt']['magic'] != $magic) {
+                       $this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$headeroffset.', found "'.getid3_lib::PrintHexBytes($info['dsf']['fmt']['magic']).'"');
+                       return false;
+               }
+               $info['dsf']['fmt']['fmt_chunk_size']     = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8));  // usually 52 bytes
+               $headeroffset += 8;
+               $dsfheader .= $this->fread($info['dsf']['fmt']['fmt_chunk_size'] - 12 + 12);  // we have already read the entire DSD chunk, plus 12 bytes of FMT. We now want to read the size of FMT, plus 12 bytes into the next chunk to get magic and size.
+               if (strlen($dsfheader) != ($info['dsf']['dsd']['dsd_chunk_size'] + $info['dsf']['fmt']['fmt_chunk_size'] + 12)) {
+                       $this->error('Expecting '.($info['dsf']['dsd']['dsd_chunk_size'] + $info['dsf']['fmt']['fmt_chunk_size']).' bytes header, found '.strlen($dsfheader).' bytes');
+                       return false;
+               }
+               $info['dsf']['fmt']['format_version']     = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));  // usually "1"
+               $headeroffset += 4;
+               $info['dsf']['fmt']['format_id']          = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));  // usually "0" = "DSD Raw"
+               $headeroffset += 4;
+               $info['dsf']['fmt']['channel_type_id']    = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));
+               $headeroffset += 4;
+               $info['dsf']['fmt']['channels']           = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));
+               $headeroffset += 4;
+               $info['dsf']['fmt']['sample_rate']        = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));
+               $headeroffset += 4;
+               $info['dsf']['fmt']['bits_per_sample']    = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));
+               $headeroffset += 4;
+               $info['dsf']['fmt']['sample_count']       = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8));
+               $headeroffset += 8;
+               $info['dsf']['fmt']['channel_block_size'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4));
+               $headeroffset += 4;
+               $info['dsf']['fmt']['reserved']           = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); // zero-filled
+               $headeroffset += 4;
+
+
+               $info['dsf']['data']['magic'] = substr($dsfheader, $headeroffset, 4);
+               $headeroffset += 4;
+               $magic = 'data';
+               if ($info['dsf']['data']['magic'] != $magic) {
+                       $this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$headeroffset.', found "'.getid3_lib::PrintHexBytes($info['dsf']['data']['magic']).'"');
+                       return false;
+               }
+               $info['dsf']['data']['data_chunk_size']    = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8));
+               $headeroffset += 8;
+               $info['avdataoffset'] = $headeroffset;
+               $info['avdataend']    = $info['avdataoffset'] + $info['dsf']['data']['data_chunk_size'];
+
+
+               if ($info['dsf']['dsd']['meta_chunk_offset'] > 0) {
+                       $getid3_id3v2 = new getid3_id3v2($this->getid3);
+                       $getid3_id3v2->StartingOffset = $info['dsf']['dsd']['meta_chunk_offset'];
+                       $getid3_id3v2->Analyze();
+                       unset($getid3_id3v2);
+               }
+
+
+               $info['dsf']['fmt']['channel_type'] = $this->DSFchannelTypeLookup($info['dsf']['fmt']['channel_type_id']);
+               $info['audio']['channelmode']       = $info['dsf']['fmt']['channel_type'];
+               $info['audio']['bits_per_sample']   = $info['dsf']['fmt']['bits_per_sample'];
+               $info['audio']['sample_rate']       = $info['dsf']['fmt']['sample_rate'];
+               $info['audio']['channels']          = $info['dsf']['fmt']['channels'];
+               $info['audio']['bitrate']           = $info['audio']['bits_per_sample'] * $info['audio']['sample_rate'] * $info['audio']['channels'];
+               $info['playtime_seconds']           = ($info['dsf']['data']['data_chunk_size'] * 8) / $info['audio']['bitrate'];
+
+               return true;
+       }
+
+
+       public static function DSFchannelTypeLookup($channel_type_id) {
+               static $DSFchannelTypeLookup = array(
+                                         // interleaving order:
+                       1 => 'mono',      // 1: Mono
+                       2 => 'stereo',    // 1: Front-Left; 2: Front-Right
+                       3 => '3-channel', // 1: Front-Left; 2: Front-Right; 3: Center
+                       4 => 'quad',      // 1: Front-Left; 2: Front-Right; 3: Back-Left; 4: Back-Right
+                       5 => '4-channel', // 1: Front-Left; 2: Front-Right; 3: Center;    4: Low-Frequency
+                       6 => '5-channel', // 1: Front-Left; 2: Front-Right; 3: Center;    4: Back-Left      5: Back-Right
+                       7 => '5.1',       // 1: Front-Left; 2: Front-Right; 3: Center;    4: Low-Frequency; 5: Back-Left;  6: Back-Right
+               );
+               return (isset($DSFchannelTypeLookup[$channel_type_id]) ? $DSFchannelTypeLookup[$channel_type_id] : '');
+       }
+
+}