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Diffstat (limited to 'Processing-js/libs/js/MIDI/Plugin.js')
-rw-r--r-- | Processing-js/libs/js/MIDI/Plugin.js | 623 |
1 files changed, 623 insertions, 0 deletions
diff --git a/Processing-js/libs/js/MIDI/Plugin.js b/Processing-js/libs/js/MIDI/Plugin.js new file mode 100644 index 0000000..7647f96 --- /dev/null +++ b/Processing-js/libs/js/MIDI/Plugin.js @@ -0,0 +1,623 @@ +/* + -------------------------------------------- + MIDI.Plugin : 0.3.2 : 2013/01/26 + -------------------------------------------- + https://github.com/mudcube/MIDI.js + -------------------------------------------- + Inspired by javax.sound.midi (albeit a super simple version): + http://docs.oracle.com/javase/6/docs/api/javax/sound/midi/package-summary.html + -------------------------------------------- + Technologies: + MIDI.WebMIDI + MIDI.WebAudio + MIDI.Flash + MIDI.AudioTag + -------------------------------------------- + Helpers: + MIDI.GeneralMIDI + MIDI.channels + MIDI.keyToNote + MIDI.noteToKey +*/ + +if (typeof (MIDI) === "undefined") var MIDI = {}; + +(function() { "use strict"; + +var setPlugin = function(root) { + MIDI.api = root.api; + MIDI.setVolume = root.setVolume; + MIDI.programChange = root.programChange; + MIDI.noteOn = root.noteOn; + MIDI.noteOff = root.noteOff; + MIDI.chordOn = root.chordOn; + MIDI.chordOff = root.chordOff; + MIDI.stopAllNotes = root.stopAllNotes; + MIDI.getInput = root.getInput; + MIDI.getOutputs = root.getOutputs; +}; + +/* + -------------------------------------------- + Web MIDI API - Native Soundbank + -------------------------------------------- + https://dvcs.w3.org/hg/audio/raw-file/tip/midi/specification.html + -------------------------------------------- +*/ + +(function () { + var plugin = null; + var output = null; + var channels = []; + var root = MIDI.WebMIDI = { + api: "webmidi" + }; + root.setVolume = function (channel, volume) { // set channel volume + output.send([0xB0 + channel, 0x07, volume]); + }; + + root.programChange = function (channel, program) { // change channel instrument + output.send([0xC0 + channel, program]); + }; + + root.noteOn = function (channel, note, velocity, delay) { + output.send([0x90 + channel, note, velocity], delay * 1000); + }; + + root.noteOff = function (channel, note, delay) { + output.send([0x80 + channel, note, 0], delay * 1000); + }; + + root.chordOn = function (channel, chord, velocity, delay) { + for (var n = 0; n < chord.length; n ++) { + var note = chord[n]; + output.send([0x90 + channel, note, velocity], delay * 1000); + } + }; + + root.chordOff = function (channel, chord, delay) { + for (var n = 0; n < chord.length; n ++) { + var note = chord[n]; + output.send([0x80 + channel, note, 0], delay * 1000); + } + }; + + root.stopAllNotes = function () { + for (var channel = 0; channel < 16; channel ++) { + output.send([0xB0 + channel, 0x7B, 0]); + } + }; + + root.getInput = function () { + return plugin.getInputs(); + }; + + root.getOutputs = function () { + return plugin.getOutputs(); + }; + + root.connect = function (conf) { + setPlugin(root); + navigator.requestMIDIAccess().then(function (access) { + plugin = access; + output = plugin.outputs()[0]; + if (conf.callback) conf.callback(); + }, function (err) { // well at least we tried! + if (window.AudioContext || window.webkitAudioContext) { // Chrome + conf.api = "webaudio"; + } else if (window.Audio) { // Firefox + conf.api = "audiotag"; + } else { // Internet Explorer + conf.api = "flash"; + } + MIDI.loadPlugin(conf); + }); + }; +})(); + +/* + -------------------------------------------- + Web Audio API - OGG or MPEG Soundbank + -------------------------------------------- + https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html + -------------------------------------------- +*/ + +if (window.AudioContext || window.webkitAudioContext) (function () { + + var AudioContext = window.AudioContext || window.webkitAudioContext; + var root = MIDI.WebAudio = { + api: "webaudio" + }; + var ctx; + var sources = {}; + var masterVolume = 127; + var audioBuffers = {}; + var audioLoader = function (instrument, urlList, index, bufferList, callback) { + var synth = MIDI.GeneralMIDI.byName[instrument]; + var instrumentId = synth.number; + var url = urlList[index]; + if (!MIDI.Soundfont[instrument][url]) { // missing soundfont + return callback(instrument); + } + var base64 = MIDI.Soundfont[instrument][url].split(",")[1]; + var buffer = Base64Binary.decodeArrayBuffer(base64); + ctx.decodeAudioData(buffer, function (buffer) { + var msg = url; + while (msg.length < 3) msg += " "; + if (typeof (MIDI.loader) !== "undefined") { + MIDI.loader.update(null, synth.instrument + "<br>Processing: " + (index / 87 * 100 >> 0) + "%<br>" + msg); + } + buffer.id = url; + bufferList[index] = buffer; + // + if (bufferList.length === urlList.length) { + while (bufferList.length) { + buffer = bufferList.pop(); + if (!buffer) continue; + var nodeId = MIDI.keyToNote[buffer.id]; + audioBuffers[instrumentId + "" + nodeId] = buffer; + } + callback(instrument); + } + }); + }; + + root.setVolume = function (channel, volume) { + masterVolume = volume; + }; + + root.programChange = function (channel, program) { + MIDI.channels[channel].instrument = program; + }; + + root.noteOn = function (channel, note, velocity, delay) { + /// check whether the note exists + if (!MIDI.channels[channel]) return; + var instrument = MIDI.channels[channel].instrument; + if (!audioBuffers[instrument + "" + note]) return; + /// convert relative delay to absolute delay + if (delay < ctx.currentTime) delay += ctx.currentTime; + /// crate audio buffer + var source = ctx.createBufferSource(); + sources[channel + "" + note] = source; + source.buffer = audioBuffers[instrument + "" + note]; + source.connect(ctx.destination); + /// + if (ctx.createGain) { // firefox + source.gainNode = ctx.createGain(); + } else { // chrome + source.gainNode = ctx.createGainNode(); + } + var value = (velocity / 127) * (masterVolume / 127) * 2 - 1; + source.gainNode.connect(ctx.destination); + source.gainNode.gain.value = Math.max(-1, value); + source.connect(source.gainNode); + if (source.noteOn) { // old api + source.noteOn(delay || 0); + } else { // new api + source.start(delay || 0); + } + return source; + }; + + root.noteOff = function (channel, note, delay) { + delay = delay || 0; + if (delay < ctx.currentTime) delay += ctx.currentTime; + var source = sources[channel + "" + note]; + if (!source) return; + if (source.gainNode) { + // @Miranet: "the values of 0.2 and 0.3 could ofcourse be used as + // a 'release' parameter for ADSR like time settings." + // add { "metadata": { release: 0.3 } } to soundfont files + var gain = source.gainNode.gain; + gain.linearRampToValueAtTime(gain.value, delay); + gain.linearRampToValueAtTime(-1, delay + 0.2); + } + if (source.noteOff) { // old api + source.noteOff(delay + 0.3); + } else { + source.stop(delay + 0.3); + } + /// + delete sources[channel + "" + note]; + }; + + root.chordOn = function (channel, chord, velocity, delay) { + var ret = {}, note; + for (var n = 0, length = chord.length; n < length; n++) { + ret[note = chord[n]] = root.noteOn(channel, note, velocity, delay); + } + return ret; + }; + + root.chordOff = function (channel, chord, delay) { + var ret = {}, note; + for (var n = 0, length = chord.length; n < length; n++) { + ret[note = chord[n]] = root.noteOff(channel, note, delay); + } + return ret; + }; + + root.stopAllNotes = function () { + for (var source in sources) { + var delay = 0; + if (delay < ctx.currentTime) delay += ctx.currentTime; + // @Miranet: "the values of 0.2 and 0.3 could ofcourse be used as + // a 'release' parameter for ADSR like time settings." + // add { "metadata": { release: 0.3 } } to soundfont files + sources[source].gain.linearRampToValueAtTime(1, delay); + sources[source].gain.linearRampToValueAtTime(0, delay + 0.2); + sources[source].noteOff(delay + 0.3); + delete sources[source]; + } + }; + + root.connect = function (conf) { + setPlugin(root); + // + MIDI.Player.ctx = ctx = new AudioContext(); + /// + var urlList = []; + var keyToNote = MIDI.keyToNote; + for (var key in keyToNote) urlList.push(key); + var bufferList = []; + var pending = {}; + var oncomplete = function(instrument) { + delete pending[instrument]; + for (var key in pending) break; + if (!key) conf.callback(); + }; + for (var instrument in MIDI.Soundfont) { + pending[instrument] = true; + for (var i = 0; i < urlList.length; i++) { + audioLoader(instrument, urlList, i, bufferList, oncomplete); + } + } + }; +})(); + +/* + -------------------------------------------- + AudioTag <audio> - OGG or MPEG Soundbank + -------------------------------------------- + http://dev.w3.org/html5/spec/Overview.html#the-audio-element + -------------------------------------------- +*/ + +if (window.Audio) (function () { + + var root = MIDI.AudioTag = { + api: "audiotag" + }; + var note2id = {}; + var volume = 127; // floating point + var channel_nid = -1; // current channel + var channels = []; // the audio channels + var channelInstrumentNoteIds = []; // instrumentId + noteId that is currently playing in each 'channel', for routing noteOff/chordOff calls + var notes = {}; // the piano keys + for (var nid = 0; nid < 12; nid++) { + channels[nid] = new Audio(); + } + + var playChannel = function (channel, note) { + if (!MIDI.channels[channel]) return; + var instrument = MIDI.channels[channel].instrument; + var instrumentId = MIDI.GeneralMIDI.byId[instrument].id; + var note = notes[note]; + if (!note) return; + var instrumentNoteId = instrumentId + "" + note.id; + var nid = (channel_nid + 1) % channels.length; + var audio = channels[nid]; + channelInstrumentNoteIds[ nid ] = instrumentNoteId; + audio.src = MIDI.Soundfont[instrumentId][note.id]; + audio.volume = volume / 127; + audio.play(); + channel_nid = nid; + }; + + var stopChannel = function (channel, note) { + if (!MIDI.channels[channel]) return; + var instrument = MIDI.channels[channel].instrument; + var instrumentId = MIDI.GeneralMIDI.byId[instrument].id; + var note = notes[note]; + if (!note) return; + var instrumentNoteId = instrumentId + "" + note.id; + + for(var i=0;i<channels.length;i++){ + var nid = (i + channel_nid + 1) % channels.length; + var cId = channelInstrumentNoteIds[nid]; + + if(cId && cId == instrumentNoteId){ + channels[nid].pause(); + channelInstrumentNoteIds[nid] = null; + return; + } + } + }; + + root.programChange = function (channel, program) { + MIDI.channels[channel].instrument = program; + }; + + root.setVolume = function (channel, n) { + volume = n; //- should be channel specific volume + }; + + root.noteOn = function (channel, note, velocity, delay) { + var id = note2id[note]; + if (!notes[id]) return; + if (delay) { + return window.setTimeout(function () { + playChannel(channel, id); + }, delay * 1000); + } else { + playChannel(channel, id); + } + }; + + root.noteOff = function (channel, note, delay) { + var id = note2id[note]; + if (!notes[id]) return; + if (delay) { + return setTimeout(function() { + stopChannel(channel, id); + }, delay * 1000) + } else { + stopChannel(channel, id); + } + }; + + root.chordOn = function (channel, chord, velocity, delay) { + for (var idx = 0; idx < chord.length; idx ++) { + var n = chord[idx]; + var id = note2id[n]; + if (!notes[id]) continue; + if (delay) { + return window.setTimeout(function () { + playChannel(channel, id); + }, delay * 1000); + } else { + playChannel(channel, id); + } + } + }; + + root.chordOff = function (channel, chord, delay) { + for (var idx = 0; idx < chord.length; idx ++) { + var n = chord[idx]; + var id = note2id[n]; + if (!notes[id]) continue; + if (delay) { + return window.setTimeout(function () { + stopChannel(channel, id); + }, delay * 1000); + } else { + stopChannel(channel, id); + } + } + }; + + root.stopAllNotes = function () { + for (var nid = 0, length = channels.length; nid < length; nid++) { + channels[nid].pause(); + } + }; + + root.connect = function (conf) { + for (var key in MIDI.keyToNote) { + note2id[MIDI.keyToNote[key]] = key; + notes[key] = { + id: key + }; + } + setPlugin(root); + /// + if (conf.callback) conf.callback(); + }; +})(); + +/* + -------------------------------------------- + Flash - MP3 Soundbank + -------------------------------------------- + http://www.schillmania.com/projects/soundmanager2/ + -------------------------------------------- +*/ + +(function () { + + var root = MIDI.Flash = { + api: "flash" + }; + var noteReverse = {}; + var notes = {}; + + root.programChange = function (channel, program) { + MIDI.channels[channel].instrument = program; + }; + + root.setVolume = function (channel, note) { + + }; + + root.noteOn = function (channel, note, velocity, delay) { + if (!MIDI.channels[channel]) return; + var instrument = MIDI.channels[channel].instrument; + var id = MIDI.GeneralMIDI.byId[instrument].number; + note = id + "" + noteReverse[note]; + if (!notes[note]) return; + if (delay) { + return window.setTimeout(function() { + notes[note].play({ volume: velocity * 2 }); + }, delay * 1000); + } else { + notes[note].play({ volume: velocity * 2 }); + } + }; + + root.noteOff = function (channel, note, delay) { + + }; + + root.chordOn = function (channel, chord, velocity, delay) { + if (!MIDI.channels[channel]) return; + var instrument = MIDI.channels[channel].instrument; + var id = MIDI.GeneralMIDI.byId[instrument].number; + for (var key in chord) { + var n = chord[key]; + var note = id + "" + noteReverse[n]; + if (notes[note]) { + notes[note].play({ volume: velocity * 2 }); + } + } + }; + + root.chordOff = function (channel, chord, delay) { + + }; + + root.stopAllNotes = function () { + + }; + + root.connect = function (instruments, conf) { + soundManager.flashVersion = 9; + soundManager.useHTML5Audio = true; + soundManager.url = conf.soundManagerSwfUrl || '../inc/SoundManager2/swf/'; + soundManager.useHighPerformance = true; + soundManager.wmode = 'transparent'; + soundManager.flashPollingInterval = 1; + soundManager.debugMode = false; + soundManager.onload = function () { + var createBuffer = function(instrument, id, onload) { + var synth = MIDI.GeneralMIDI.byName[instrument]; + var instrumentId = synth.number; + notes[instrumentId+""+id] = soundManager.createSound({ + id: id, + url: MIDI.soundfontUrl + instrument + "-mp3/" + id + ".mp3", + multiShot: true, + autoLoad: true, + onload: onload + }); + }; + var loaded = []; + var samplesPerInstrument = 88; + var samplesToLoad = instruments.length * samplesPerInstrument; + + for (var i = 0; i < instruments.length; i++) { + var instrument = instruments[i]; + var onload = function () { + loaded.push(this.sID); + if (typeof (MIDI.loader) === "undefined") return; + MIDI.loader.update(null, "Processing: " + this.sID); + }; + for (var j = 0; j < samplesPerInstrument; j++) { + var id = noteReverse[j + 21]; + createBuffer(instrument, id, onload); + } + } + /// + setPlugin(root); + // + var interval = window.setInterval(function () { + if (loaded.length < samplesToLoad) return; + window.clearInterval(interval); + if (conf.callback) conf.callback(); + }, 25); + }; + soundManager.onerror = function () { + + }; + for (var key in MIDI.keyToNote) { + noteReverse[MIDI.keyToNote[key]] = key; + } + }; +})(); + +/* + helper functions +*/ + +// instrument-tracker +MIDI.GeneralMIDI = (function (arr) { + var clean = function(v) { + return v.replace(/[^a-z0-9 ]/gi, "").replace(/[ ]/g, "_").toLowerCase(); + }; + var ret = { + byName: {}, + byId: {}, + byCategory: {} + }; + for (var key in arr) { + var list = arr[key]; + for (var n = 0, length = list.length; n < length; n++) { + var instrument = list[n]; + if (!instrument) continue; + var num = parseInt(instrument.substr(0, instrument.indexOf(" ")), 10); + instrument = instrument.replace(num + " ", ""); + ret.byId[--num] = + ret.byName[clean(instrument)] = + ret.byCategory[clean(key)] = { + id: clean(instrument), + instrument: instrument, + number: num, + category: key + }; + } + } + return ret; +})({ + 'Piano': ['1 Acoustic Grand Piano', '2 Bright Acoustic Piano', '3 Electric Grand Piano', '4 Honky-tonk Piano', '5 Electric Piano 1', '6 Electric Piano 2', '7 Harpsichord', '8 Clavinet'], + 'Chromatic Percussion': ['9 Celesta', '10 Glockenspiel', '11 Music Box', '12 Vibraphone', '13 Marimba', '14 Xylophone', '15 Tubular Bells', '16 Dulcimer'], + 'Organ': ['17 Drawbar Organ', '18 Percussive Organ', '19 Rock Organ', '20 Church Organ', '21 Reed Organ', '22 Accordion', '23 Harmonica', '24 Tango Accordion'], + 'Guitar': ['25 Acoustic Guitar (nylon)', '26 Acoustic Guitar (steel)', '27 Electric Guitar (jazz)', '28 Electric Guitar (clean)', '29 Electric Guitar (muted)', '30 Overdriven Guitar', '31 Distortion Guitar', '32 Guitar Harmonics'], + 'Bass': ['33 Acoustic Bass', '34 Electric Bass (finger)', '35 Electric Bass (pick)', '36 Fretless Bass', '37 Slap Bass 1', '38 Slap Bass 2', '39 Synth Bass 1', '40 Synth Bass 2'], + 'Strings': ['41 Violin', '42 Viola', '43 Cello', '44 Contrabass', '45 Tremolo Strings', '46 Pizzicato Strings', '47 Orchestral Harp', '48 Timpani'], + 'Ensemble': ['49 String Ensemble 1', '50 String Ensemble 2', '51 Synth Strings 1', '52 Synth Strings 2', '53 Choir Aahs', '54 Voice Oohs', '55 Synth Choir', '56 Orchestra Hit'], + 'Brass': ['57 Trumpet', '58 Trombone', '59 Tuba', '60 Muted Trumpet', '61 French Horn', '62 Brass Section', '63 Synth Brass 1', '64 Synth Brass 2'], + 'Reed': ['65 Soprano Sax', '66 Alto Sax', '67 Tenor Sax', '68 Baritone Sax', '69 Oboe', '70 English Horn', '71 Bassoon', '72 Clarinet'], + 'Pipe': ['73 Piccolo', '74 Flute', '75 Recorder', '76 Pan Flute', '77 Blown Bottle', '78 Shakuhachi', '79 Whistle', '80 Ocarina'], + 'Synth Lead': ['81 Lead 1 (square)', '82 Lead 2 (sawtooth)', '83 Lead 3 (calliope)', '84 Lead 4 (chiff)', '85 Lead 5 (charang)', '86 Lead 6 (voice)', '87 Lead 7 (fifths)', '88 Lead 8 (bass + lead)'], + 'Synth Pad': ['89 Pad 1 (new age)', '90 Pad 2 (warm)', '91 Pad 3 (polysynth)', '92 Pad 4 (choir)', '93 Pad 5 (bowed)', '94 Pad 6 (metallic)', '95 Pad 7 (halo)', '96 Pad 8 (sweep)'], + 'Synth Effects': ['97 FX 1 (rain)', '98 FX 2 (soundtrack)', '99 FX 3 (crystal)', '100 FX 4 (atmosphere)', '101 FX 5 (brightness)', '102 FX 6 (goblins)', '103 FX 7 (echoes)', '104 FX 8 (sci-fi)'], + 'Ethnic': ['105 Sitar', '106 Banjo', '107 Shamisen', '108 Koto', '109 Kalimba', '110 Bagpipe', '111 Fiddle', '112 Shanai'], + 'Percussive': ['113 Tinkle Bell', '114 Agogo', '115 Steel Drums', '116 Woodblock', '117 Taiko Drum', '118 Melodic Tom', '119 Synth Drum'], + 'Sound effects': ['120 Reverse Cymbal', '121 Guitar Fret Noise', '122 Breath Noise', '123 Seashore', '124 Bird Tweet', '125 Telephone Ring', '126 Helicopter', '127 Applause', '128 Gunshot'] +}); + +// channel-tracker +MIDI.channels = (function () { // 0 - 15 channels + var channels = {}; + for (var n = 0; n < 16; n++) { + channels[n] = { // default values + instrument: 0, + // Acoustic Grand Piano + mute: false, + mono: false, + omni: false, + solo: false + }; + } + return channels; +})(); + +// +MIDI.pianoKeyOffset = 21; + +// note conversions +MIDI.keyToNote = {}; // C8 == 108 +MIDI.noteToKey = {}; // 108 == C8 +(function () { + var A0 = 0x15; // first note + var C8 = 0x6C; // last note + var number2key = ["C", "Db", "D", "Eb", "E", "F", "Gb", "G", "Ab", "A", "Bb", "B"]; + for (var n = A0; n <= C8; n++) { + var octave = (n - 12) / 12 >> 0; + var name = number2key[n % 12] + octave; + MIDI.keyToNote[name] = n; + MIDI.noteToKey[n] = name; + } +})(); + +})();
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