Timers WIP

Added getID3

1 files changed, 522 insertions, 0 deletions

diff --git a/getid3/module.audio.midi.php b/getid3/module.audio.midi.php
new file mode 100644
index 0000000..0fd7c9b
--- /dev/null
+++ b/getid3/module.audio.midi.php
@@ -0,0 +1,522 @@
+<?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.audio.midi.php                                       //
+// module for Midi Audio files                                 //
+// dependencies: NONE                                          //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+
+class getid3_midi
+{
+
+	function getid3_midi(&$fd, &$ThisFileInfo, $scanwholefile=true) {
+
+		// shortcut
+		$ThisFileInfo['midi']['raw'] = array();
+		$thisfile_midi               = &$ThisFileInfo['midi'];
+		$thisfile_midi_raw           = &$thisfile_midi['raw'];
+
+		$ThisFileInfo['fileformat']          = 'midi';
+		$ThisFileInfo['audio']['dataformat'] = 'midi';
+
+		fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
+		$MIDIdata = fread($fd, GETID3_FREAD_BUFFER_SIZE);
+		$offset = 0;
+		$MIDIheaderID = substr($MIDIdata, $offset, 4); // 'MThd'
+		if ($MIDIheaderID != 'MThd') {
+			$ThisFileInfo['error'][] = 'Expecting "MThd" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$MIDIheaderID.'"';
+			unset($ThisFileInfo['fileformat']);
+			return false;
+		}
+		$offset += 4;
+		$thisfile_midi_raw['headersize']    = getid3_lib::BigEndian2Int(substr($MIDIdata, $offset, 4));
+		$offset += 4;
+		$thisfile_midi_raw['fileformat']    = getid3_lib::BigEndian2Int(substr($MIDIdata, $offset, 2));
+		$offset += 2;
+		$thisfile_midi_raw['tracks']        = getid3_lib::BigEndian2Int(substr($MIDIdata, $offset, 2));
+		$offset += 2;
+		$thisfile_midi_raw['ticksperqnote'] = getid3_lib::BigEndian2Int(substr($MIDIdata, $offset, 2));
+		$offset += 2;
+
+		for ($i = 0; $i < $thisfile_midi_raw['tracks']; $i++) {
+			if ((strlen($MIDIdata) - $offset) < 8) {
+				$MIDIdata .= fread($fd, GETID3_FREAD_BUFFER_SIZE);
+			}
+			$trackID = substr($MIDIdata, $offset, 4);
+			$offset += 4;
+			if ($trackID == 'MTrk') {
+				$tracksize = getid3_lib::BigEndian2Int(substr($MIDIdata, $offset, 4));
+				$offset += 4;
+				// $thisfile_midi['tracks'][$i]['size'] = $tracksize;
+				$trackdataarray[$i] = substr($MIDIdata, $offset, $tracksize);
+				$offset += $tracksize;
+			} else {
+				$ThisFileInfo['error'][] = 'Expecting "MTrk" at '.$offset.', found '.$trackID.' instead';
+				return false;
+			}
+		}
+
+		if (!isset($trackdataarray) || !is_array($trackdataarray)) {
+			$ThisFileInfo['error'][] = 'Cannot find MIDI track information';
+			unset($thisfile_midi);
+			unset($ThisFileInfo['fileformat']);
+			return false;
+		}
+
+		if ($scanwholefile) { // this can take quite a long time, so have the option to bypass it if speed is very important
+			$thisfile_midi['totalticks']      = 0;
+			$ThisFileInfo['playtime_seconds'] = 0;
+			$CurrentMicroSecondsPerBeat       = 500000; // 120 beats per minute;  60,000,000 microseconds per minute -> 500,000 microseconds per beat
+			$CurrentBeatsPerMinute            = 120;    // 120 beats per minute;  60,000,000 microseconds per minute -> 500,000 microseconds per beat
+			$MicroSecondsPerQuarterNoteAfter  = array ();
+
+			foreach ($trackdataarray as $tracknumber => $trackdata) {
+
+				$eventsoffset               = 0;
+				$LastIssuedMIDIcommand      = 0;
+				$LastIssuedMIDIchannel      = 0;
+				$CumulativeDeltaTime        = 0;
+				$TicksAtCurrentBPM = 0;
+				while ($eventsoffset < strlen($trackdata)) {
+					$eventid = 0;
+					if (isset($MIDIevents[$tracknumber]) && is_array($MIDIevents[$tracknumber])) {
+						$eventid = count($MIDIevents[$tracknumber]);
+					}
+					$deltatime = 0;
+					for ($i = 0; $i < 4; $i++) {
+						$deltatimebyte = ord(substr($trackdata, $eventsoffset++, 1));
+						$deltatime = ($deltatime << 7) + ($deltatimebyte & 0x7F);
+						if ($deltatimebyte & 0x80) {
+							// another byte follows
+						} else {
+							break;
+						}
+					}
+					$CumulativeDeltaTime += $deltatime;
+					$TicksAtCurrentBPM   += $deltatime;
+					$MIDIevents[$tracknumber][$eventid]['deltatime'] = $deltatime;
+					$MIDI_event_channel                                  = ord(substr($trackdata, $eventsoffset++, 1));
+					if ($MIDI_event_channel & 0x80) {
+						// OK, normal event - MIDI command has MSB set
+						$LastIssuedMIDIcommand = $MIDI_event_channel >> 4;
+						$LastIssuedMIDIchannel = $MIDI_event_channel & 0x0F;
+					} else {
+						// running event - assume last command
+						$eventsoffset--;
+					}
+					$MIDIevents[$tracknumber][$eventid]['eventid']   = $LastIssuedMIDIcommand;
+					$MIDIevents[$tracknumber][$eventid]['channel']   = $LastIssuedMIDIchannel;
+					if ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x08) { // Note off (key is released)
+
+						$notenumber = ord(substr($trackdata, $eventsoffset++, 1));
+						$velocity   = ord(substr($trackdata, $eventsoffset++, 1));
+
+					} elseif ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x09) { // Note on (key is pressed)
+
+						$notenumber = ord(substr($trackdata, $eventsoffset++, 1));
+						$velocity   = ord(substr($trackdata, $eventsoffset++, 1));
+
+					} elseif ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x0A) { // Key after-touch
+
+						$notenumber = ord(substr($trackdata, $eventsoffset++, 1));
+						$velocity   = ord(substr($trackdata, $eventsoffset++, 1));
+
+					} elseif ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x0B) { // Control Change
+
+						$controllernum = ord(substr($trackdata, $eventsoffset++, 1));
+						$newvalue      = ord(substr($trackdata, $eventsoffset++, 1));
+
+					} elseif ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x0C) { // Program (patch) change
+
+						$newprogramnum = ord(substr($trackdata, $eventsoffset++, 1));
+
+						$thisfile_midi_raw['track'][$tracknumber]['instrumentid'] = $newprogramnum;
+						if ($tracknumber == 10) {
+							$thisfile_midi_raw['track'][$tracknumber]['instrument'] = $this->GeneralMIDIpercussionLookup($newprogramnum);
+						} else {
+							$thisfile_midi_raw['track'][$tracknumber]['instrument'] = $this->GeneralMIDIinstrumentLookup($newprogramnum);
+						}
+
+					} elseif ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x0D) { // Channel after-touch
+
+						$channelnumber = ord(substr($trackdata, $eventsoffset++, 1));
+
+					} elseif ($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x0E) { // Pitch wheel change (2000H is normal or no change)
+
+						$changeLSB = ord(substr($trackdata, $eventsoffset++, 1));
+						$changeMSB = ord(substr($trackdata, $eventsoffset++, 1));
+						$pitchwheelchange = (($changeMSB & 0x7F) << 7) & ($changeLSB & 0x7F);
+
+					} elseif (($MIDIevents[$tracknumber][$eventid]['eventid'] == 0x0F) && ($MIDIevents[$tracknumber][$eventid]['channel'] == 0x0F)) {
+
+						$METAeventCommand = ord(substr($trackdata, $eventsoffset++, 1));
+						$METAeventLength  = ord(substr($trackdata, $eventsoffset++, 1));
+						$METAeventData    = substr($trackdata, $eventsoffset, $METAeventLength);
+						$eventsoffset += $METAeventLength;
+						switch ($METAeventCommand) {
+							case 0x00: // Set track sequence number
+								$track_sequence_number = getid3_lib::BigEndian2Int(substr($METAeventData, 0, $METAeventLength));
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['seqno'] = $track_sequence_number;
+								break;
+
+							case 0x01: // Text: generic
+								$text_generic = substr($METAeventData, 0, $METAeventLength);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['text'] = $text_generic;
+								$thisfile_midi['comments']['comment'][] = $text_generic;
+								break;
+
+							case 0x02: // Text: copyright
+								$text_copyright = substr($METAeventData, 0, $METAeventLength);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['copyright'] = $text_copyright;
+								$thisfile_midi['comments']['copyright'][] = $text_copyright;
+								break;
+
+							case 0x03: // Text: track name
+								$text_trackname = substr($METAeventData, 0, $METAeventLength);
+								$thisfile_midi_raw['track'][$tracknumber]['name'] = $text_trackname;
+								break;
+
+							case 0x04: // Text: track instrument name
+								$text_instrument = substr($METAeventData, 0, $METAeventLength);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['instrument'] = $text_instrument;
+								break;
+
+							case 0x05: // Text: lyrics
+								$text_lyrics  = substr($METAeventData, 0, $METAeventLength);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['lyrics'] = $text_lyrics;
+								if (!isset($thisfile_midi['lyrics'])) {
+									$thisfile_midi['lyrics'] = '';
+								}
+								$thisfile_midi['lyrics'] .= $text_lyrics."\n";
+								break;
+
+							case 0x06: // Text: marker
+								$text_marker = substr($METAeventData, 0, $METAeventLength);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['marker'] = $text_marker;
+								break;
+
+							case 0x07: // Text: cue point
+								$text_cuepoint = substr($METAeventData, 0, $METAeventLength);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['cuepoint'] = $text_cuepoint;
+								break;
+
+							case 0x2F: // End Of Track
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['EOT'] = $CumulativeDeltaTime;
+								break;
+
+							case 0x51: // Tempo: microseconds / quarter note
+								$CurrentMicroSecondsPerBeat = getid3_lib::BigEndian2Int(substr($METAeventData, 0, $METAeventLength));
+								if ($CurrentMicroSecondsPerBeat == 0) {
+									$ThisFileInfo['error'][] = 'Corrupt MIDI file: CurrentMicroSecondsPerBeat == zero';
+									return false;
+								}
+								$thisfile_midi_raw['events'][$tracknumber][$CumulativeDeltaTime]['us_qnote'] = $CurrentMicroSecondsPerBeat;
+								$CurrentBeatsPerMinute = (1000000 / $CurrentMicroSecondsPerBeat) * 60;
+								$MicroSecondsPerQuarterNoteAfter[$CumulativeDeltaTime] = $CurrentMicroSecondsPerBeat;
+								$TicksAtCurrentBPM = 0;
+								break;
+
+							case 0x58: // Time signature
+								$timesig_numerator   = getid3_lib::BigEndian2Int($METAeventData{0});
+								$timesig_denominator = pow(2, getid3_lib::BigEndian2Int($METAeventData{1})); // $02 -> x/4, $03 -> x/8, etc
+								$timesig_32inqnote   = getid3_lib::BigEndian2Int($METAeventData{2});         // number of 32nd notes to the quarter note
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['timesig_32inqnote']   = $timesig_32inqnote;
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['timesig_numerator']   = $timesig_numerator;
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['timesig_denominator'] = $timesig_denominator;
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['timesig_text']        = $timesig_numerator.'/'.$timesig_denominator;
+								$thisfile_midi['timesignature'][] = $timesig_numerator.'/'.$timesig_denominator;
+								break;
+
+							case 0x59: // Keysignature
+								$keysig_sharpsflats = getid3_lib::BigEndian2Int($METAeventData{0});
+								if ($keysig_sharpsflats & 0x80) {
+									// (-7 -> 7 flats, 0 ->key of C, 7 -> 7 sharps)
+									$keysig_sharpsflats -= 256;
+								}
+
+								$keysig_majorminor  = getid3_lib::BigEndian2Int($METAeventData{1}); // 0 -> major, 1 -> minor
+								$keysigs = array(-7=>'Cb', -6=>'Gb', -5=>'Db', -4=>'Ab', -3=>'Eb', -2=>'Bb', -1=>'F', 0=>'C', 1=>'G', 2=>'D', 3=>'A', 4=>'E', 5=>'B', 6=>'F#', 7=>'C#');
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['keysig_sharps'] = (($keysig_sharpsflats > 0) ? abs($keysig_sharpsflats) : 0);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['keysig_flats']  = (($keysig_sharpsflats < 0) ? abs($keysig_sharpsflats) : 0);
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['keysig_minor']  = (bool) $keysig_majorminor;
+								//$thisfile_midi_raw['events'][$tracknumber][$eventid]['keysig_text']   = $keysigs[$keysig_sharpsflats].' '.($thisfile_midi_raw['events'][$tracknumber][$eventid]['keysig_minor'] ? 'minor' : 'major');
+
+								// $keysigs[$keysig_sharpsflats] gets an int key (correct) - $keysigs["$keysig_sharpsflats"] gets a string key (incorrect)
+								$thisfile_midi['keysignature'][] = $keysigs[$keysig_sharpsflats].' '.((bool) $keysig_majorminor ? 'minor' : 'major');
+								break;
+
+							case 0x7F: // Sequencer specific information
+								$custom_data = substr($METAeventData, 0, $METAeventLength);
+								break;
+
+							default:
+								$ThisFileInfo['warning'][] = 'Unhandled META Event Command: '.$METAeventCommand;
+								break;
+						}
+
+					} else {
+
+						$ThisFileInfo['warning'][] = 'Unhandled MIDI Event ID: '.$MIDIevents[$tracknumber][$eventid]['eventid'].' + Channel ID: '.$MIDIevents[$tracknumber][$eventid]['channel'];
+
+					}
+				}
+				if (($tracknumber > 0) || (count($trackdataarray) == 1)) {
+					$thisfile_midi['totalticks'] = max($thisfile_midi['totalticks'], $CumulativeDeltaTime);
+				}
+			}
+			$previoustickoffset = null;
+
+			ksort($MicroSecondsPerQuarterNoteAfter);
+			foreach ($MicroSecondsPerQuarterNoteAfter as $tickoffset => $microsecondsperbeat) {
+				if (is_null($previoustickoffset)) {
+					$prevmicrosecondsperbeat = $microsecondsperbeat;
+					$previoustickoffset = $tickoffset;
+					continue;
+				}
+				if ($thisfile_midi['totalticks'] > $tickoffset) {
+
+					if ($thisfile_midi_raw['ticksperqnote'] == 0) {
+						$ThisFileInfo['error'][] = 'Corrupt MIDI file: ticksperqnote == zero';
+						return false;
+					}
+
+					$ThisFileInfo['playtime_seconds'] += (($tickoffset - $previoustickoffset) / $thisfile_midi_raw['ticksperqnote']) * ($prevmicrosecondsperbeat / 1000000);
+
+					$prevmicrosecondsperbeat = $microsecondsperbeat;
+					$previoustickoffset = $tickoffset;
+				}
+			}
+			if ($thisfile_midi['totalticks'] > $previoustickoffset) {
+
+				if ($thisfile_midi_raw['ticksperqnote'] == 0) {
+					$ThisFileInfo['error'][] = 'Corrupt MIDI file: ticksperqnote == zero';
+					return false;
+				}
+
+				$ThisFileInfo['playtime_seconds'] += (($thisfile_midi['totalticks'] - $previoustickoffset) / $thisfile_midi_raw['ticksperqnote']) * ($microsecondsperbeat / 1000000);
+
+			}
+		}
+		
+
+		if (@$ThisFileInfo['playtime_seconds'] > 0) {
+			$ThisFileInfo['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds'];
+		}
+
+		if (!empty($thisfile_midi['lyrics'])) {
+			$thisfile_midi['comments']['lyrics'][] = $thisfile_midi['lyrics'];
+		}
+
+		return true;
+	}
+
+	function GeneralMIDIinstrumentLookup($instrumentid) {
+
+		$begin = __LINE__;
+
+		/** This is not a comment!
+
+			0	Acoustic Grand
+			1	Bright Acoustic
+			2	Electric Grand
+			3	Honky-Tonk
+			4	Electric Piano 1
+			5	Electric Piano 2
+			6	Harpsichord
+			7	Clavier
+			8	Celesta
+			9	Glockenspiel
+			10	Music Box
+			11	Vibraphone
+			12	Marimba
+			13	Xylophone
+			14	Tubular Bells
+			15	Dulcimer
+			16	Drawbar Organ
+			17	Percussive Organ
+			18	Rock Organ
+			19	Church Organ
+			20	Reed Organ
+			21	Accordian
+			22	Harmonica
+			23	Tango Accordian
+			24	Acoustic Guitar (nylon)
+			25	Acoustic Guitar (steel)
+			26	Electric Guitar (jazz)
+			27	Electric Guitar (clean)
+			28	Electric Guitar (muted)
+			29	Overdriven Guitar
+			30	Distortion Guitar
+			31	Guitar Harmonics
+			32	Acoustic Bass
+			33	Electric Bass (finger)
+			34	Electric Bass (pick)
+			35	Fretless Bass
+			36	Slap Bass 1
+			37	Slap Bass 2
+			38	Synth Bass 1
+			39	Synth Bass 2
+			40	Violin
+			41	Viola
+			42	Cello
+			43	Contrabass
+			44	Tremolo Strings
+			45	Pizzicato Strings
+			46	Orchestral Strings
+			47	Timpani
+			48	String Ensemble 1
+			49	String Ensemble 2
+			50	SynthStrings 1
+			51	SynthStrings 2
+			52	Choir Aahs
+			53	Voice Oohs
+			54	Synth Voice
+			55	Orchestra Hit
+			56	Trumpet
+			57	Trombone
+			58	Tuba
+			59	Muted Trumpet
+			60	French Horn
+			61	Brass Section
+			62	SynthBrass 1
+			63	SynthBrass 2
+			64	Soprano Sax
+			65	Alto Sax
+			66	Tenor Sax
+			67	Baritone Sax
+			68	Oboe
+			69	English Horn
+			70	Bassoon
+			71	Clarinet
+			72	Piccolo
+			73	Flute
+			74	Recorder
+			75	Pan Flute
+			76	Blown Bottle
+			77	Shakuhachi
+			78	Whistle
+			79	Ocarina
+			80	Lead 1 (square)
+			81	Lead 2 (sawtooth)
+			82	Lead 3 (calliope)
+			83	Lead 4 (chiff)
+			84	Lead 5 (charang)
+			85	Lead 6 (voice)
+			86	Lead 7 (fifths)
+			87	Lead 8 (bass + lead)
+			88	Pad 1 (new age)
+			89	Pad 2 (warm)
+			90	Pad 3 (polysynth)
+			91	Pad 4 (choir)
+			92	Pad 5 (bowed)
+			93	Pad 6 (metallic)
+			94	Pad 7 (halo)
+			95	Pad 8 (sweep)
+			96	FX 1 (rain)
+			97	FX 2 (soundtrack)
+			98	FX 3 (crystal)
+			99	FX 4 (atmosphere)
+			100	FX 5 (brightness)
+			101	FX 6 (goblins)
+			102	FX 7 (echoes)
+			103	FX 8 (sci-fi)
+			104	Sitar
+			105	Banjo
+			106	Shamisen
+			107	Koto
+			108	Kalimba
+			109	Bagpipe
+			110	Fiddle
+			111	Shanai
+			112	Tinkle Bell
+			113	Agogo
+			114	Steel Drums
+			115	Woodblock
+			116	Taiko Drum
+			117	Melodic Tom
+			118	Synth Drum
+			119	Reverse Cymbal
+			120	Guitar Fret Noise
+			121	Breath Noise
+			122	Seashore
+			123	Bird Tweet
+			124	Telephone Ring
+			125	Helicopter
+			126	Applause
+			127	Gunshot
+
+		*/
+
+		return getid3_lib::EmbeddedLookup($instrumentid, $begin, __LINE__, __FILE__, 'GeneralMIDIinstrument');
+	}
+
+	function GeneralMIDIpercussionLookup($instrumentid) {
+
+		$begin = __LINE__;
+
+		/** This is not a comment!
+
+			35	Acoustic Bass Drum
+			36	Bass Drum 1
+			37	Side Stick
+			38	Acoustic Snare
+			39	Hand Clap
+			40	Electric Snare
+			41	Low Floor Tom
+			42	Closed Hi-Hat
+			43	High Floor Tom
+			44	Pedal Hi-Hat
+			45	Low Tom
+			46	Open Hi-Hat
+			47	Low-Mid Tom
+			48	Hi-Mid Tom
+			49	Crash Cymbal 1
+			50	High Tom
+			51	Ride Cymbal 1
+			52	Chinese Cymbal
+			53	Ride Bell
+			54	Tambourine
+			55	Splash Cymbal
+			56	Cowbell
+			57	Crash Cymbal 2
+			59	Ride Cymbal 2
+			60	Hi Bongo
+			61	Low Bongo
+			62	Mute Hi Conga
+			63	Open Hi Conga
+			64	Low Conga
+			65	High Timbale
+			66	Low Timbale
+			67	High Agogo
+			68	Low Agogo
+			69	Cabasa
+			70	Maracas
+			71	Short Whistle
+			72	Long Whistle
+			73	Short Guiro
+			74	Long Guiro
+			75	Claves
+			76	Hi Wood Block
+			77	Low Wood Block
+			78	Mute Cuica
+			79	Open Cuica
+			80	Mute Triangle
+			81	Open Triangle
+
+		*/
+
+		return getid3_lib::EmbeddedLookup($instrumentid, $begin, __LINE__, __FILE__, 'GeneralMIDIpercussion');
+	}
+
+}
+
+
+?>
\ No newline at end of file