From 4f01edb9230f58ff84b0dd892c931ec8ac9aad55 Mon Sep 17 00:00:00 2001 From: Brian Picciano Date: Tue, 13 Sep 2022 12:56:08 +0200 Subject: move src out of srv, clean up default.nix and Makefile --- .../trading-in-the-rain/MIDI.js/js/midi/player.js | 380 --------------------- 1 file changed, 380 deletions(-) delete mode 100644 srv/src/http/static/trading-in-the-rain/MIDI.js/js/midi/player.js (limited to 'srv/src/http/static/trading-in-the-rain/MIDI.js/js/midi/player.js') diff --git a/srv/src/http/static/trading-in-the-rain/MIDI.js/js/midi/player.js b/srv/src/http/static/trading-in-the-rain/MIDI.js/js/midi/player.js deleted file mode 100644 index 08f298f..0000000 --- a/srv/src/http/static/trading-in-the-rain/MIDI.js/js/midi/player.js +++ /dev/null @@ -1,380 +0,0 @@ -/* - ---------------------------------------------------------- - MIDI.Player : 0.3.1 : 2015-03-26 - ---------------------------------------------------------- - https://github.com/mudcube/MIDI.js - ---------------------------------------------------------- -*/ - -if (typeof MIDI === 'undefined') MIDI = {}; -if (typeof MIDI.Player === 'undefined') MIDI.Player = {}; - -(function() { 'use strict'; - -var midi = MIDI.Player; -midi.currentTime = 0; -midi.endTime = 0; -midi.restart = 0; -midi.playing = false; -midi.timeWarp = 1; -midi.startDelay = 0; -midi.BPM = 120; - -midi.start = -midi.resume = function(onsuccess) { - if (midi.currentTime < -1) { - midi.currentTime = -1; - } - startAudio(midi.currentTime, null, onsuccess); -}; - -midi.pause = function() { - var tmp = midi.restart; - stopAudio(); - midi.restart = tmp; -}; - -midi.stop = function() { - stopAudio(); - midi.restart = 0; - midi.currentTime = 0; -}; - -midi.addListener = function(onsuccess) { - onMidiEvent = onsuccess; -}; - -midi.removeListener = function() { - onMidiEvent = undefined; -}; - -midi.clearAnimation = function() { - if (midi.animationFrameId) { - cancelAnimationFrame(midi.animationFrameId); - } -}; - -midi.setAnimation = function(callback) { - var currentTime = 0; - var tOurTime = 0; - var tTheirTime = 0; - // - midi.clearAnimation(); - /// - var frame = function() { - midi.animationFrameId = requestAnimationFrame(frame); - /// - if (midi.endTime === 0) { - return; - } - if (midi.playing) { - currentTime = (tTheirTime === midi.currentTime) ? tOurTime - Date.now() : 0; - if (midi.currentTime === 0) { - currentTime = 0; - } else { - currentTime = midi.currentTime - currentTime; - } - if (tTheirTime !== midi.currentTime) { - tOurTime = Date.now(); - tTheirTime = midi.currentTime; - } - } else { // paused - currentTime = midi.currentTime; - } - /// - var endTime = midi.endTime; - var percent = currentTime / endTime; - var total = currentTime / 1000; - var minutes = total / 60; - var seconds = total - (minutes * 60); - var t1 = minutes * 60 + seconds; - var t2 = (endTime / 1000); - /// - if (t2 - t1 < -1.0) { - return; - } else { - callback({ - now: t1, - end: t2, - events: noteRegistrar - }); - } - }; - /// - requestAnimationFrame(frame); -}; - -// helpers - -midi.loadMidiFile = function(onsuccess, onprogress, onerror) { - try { - midi.replayer = new Replayer(MidiFile(midi.currentData), midi.timeWarp, null, midi.BPM); - midi.data = midi.replayer.getData(); - midi.endTime = getLength(); - /// - MIDI.loadPlugin({ -// instruments: midi.getFileInstruments(), - onsuccess: onsuccess, - onprogress: onprogress, - onerror: onerror - }); - } catch(event) { - onerror && onerror(event); - } -}; - -midi.loadFile = function(file, onsuccess, onprogress, onerror) { - midi.stop(); - if (file.indexOf('base64,') !== -1) { - var data = window.atob(file.split(',')[1]); - midi.currentData = data; - midi.loadMidiFile(onsuccess, onprogress, onerror); - } else { - var fetch = new XMLHttpRequest(); - fetch.open('GET', file); - fetch.overrideMimeType('text/plain; charset=x-user-defined'); - fetch.onreadystatechange = function() { - if (this.readyState === 4) { - if (this.status === 200) { - var t = this.responseText || ''; - var ff = []; - var mx = t.length; - var scc = String.fromCharCode; - for (var z = 0; z < mx; z++) { - ff[z] = scc(t.charCodeAt(z) & 255); - } - /// - var data = ff.join(''); - midi.currentData = data; - midi.loadMidiFile(onsuccess, onprogress, onerror); - } else { - onerror && onerror('Unable to load MIDI file'); - } - } - }; - fetch.send(); - } -}; - -midi.getFileInstruments = function() { - var instruments = {}; - var programs = {}; - for (var n = 0; n < midi.data.length; n ++) { - var event = midi.data[n][0].event; - if (event.type !== 'channel') { - continue; - } - var channel = event.channel; - switch(event.subtype) { - case 'controller': -// console.log(event.channel, MIDI.defineControl[event.controllerType], event.value); - break; - case 'programChange': - programs[channel] = event.programNumber; - break; - case 'noteOn': - var program = programs[channel]; - var gm = MIDI.GM.byId[isFinite(program) ? program : channel]; - instruments[gm.id] = true; - break; - } - } - var ret = []; - for (var key in instruments) { - ret.push(key); - } - return ret; -}; - -// Playing the audio - -var eventQueue = []; // hold events to be triggered -var queuedTime; // -var startTime = 0; // to measure time elapse -var noteRegistrar = {}; // get event for requested note -var onMidiEvent = undefined; // listener -var scheduleTracking = function(channel, note, currentTime, offset, message, velocity, time) { - return setTimeout(function() { - var data = { - channel: channel, - note: note, - now: currentTime, - end: midi.endTime, - message: message, - velocity: velocity - }; - // - if (message === 128) { - delete noteRegistrar[note]; - } else { - noteRegistrar[note] = data; - } - if (onMidiEvent) { - onMidiEvent(data); - } - midi.currentTime = currentTime; - /// - eventQueue.shift(); - /// - if (eventQueue.length < 1000) { - startAudio(queuedTime, true); - } else if (midi.currentTime === queuedTime && queuedTime < midi.endTime) { // grab next sequence - startAudio(queuedTime, true); - } - }, currentTime - offset); -}; - -var getContext = function() { - if (MIDI.api === 'webaudio') { - return MIDI.WebAudio.getContext(); - } else { - midi.ctx = {currentTime: 0}; - } - return midi.ctx; -}; - -var getLength = function() { - var data = midi.data; - var length = data.length; - var totalTime = 0.5; - for (var n = 0; n < length; n++) { - totalTime += data[n][1]; - } - return totalTime; -}; - -var __now; -var getNow = function() { - if (window.performance && window.performance.now) { - return window.performance.now(); - } else { - return Date.now(); - } -}; - -var startAudio = function(currentTime, fromCache, onsuccess) { - if (!midi.replayer) { - return; - } - if (!fromCache) { - if (typeof currentTime === 'undefined') { - currentTime = midi.restart; - } - /// - midi.playing && stopAudio(); - midi.playing = true; - midi.data = midi.replayer.getData(); - midi.endTime = getLength(); - } - /// - var note; - var offset = 0; - var messages = 0; - var data = midi.data; - var ctx = getContext(); - var length = data.length; - // - queuedTime = 0.5; - /// - var interval = eventQueue[0] && eventQueue[0].interval || 0; - var foffset = currentTime - midi.currentTime; - /// - if (MIDI.api !== 'webaudio') { // set currentTime on ctx - var now = getNow(); - __now = __now || now; - ctx.currentTime = (now - __now) / 1000; - } - /// - startTime = ctx.currentTime; - /// - for (var n = 0; n < length && messages < 100; n++) { - var obj = data[n]; - if ((queuedTime += obj[1]) <= currentTime) { - offset = queuedTime; - continue; - } - /// - currentTime = queuedTime - offset; - /// - var event = obj[0].event; - if (event.type !== 'channel') { - continue; - } - /// - var channelId = event.channel; - var channel = MIDI.channels[channelId]; - var delay = ctx.currentTime + ((currentTime + foffset + midi.startDelay) / 1000); - var queueTime = queuedTime - offset + midi.startDelay; - switch (event.subtype) { - case 'controller': - MIDI.setController(channelId, event.controllerType, event.value, delay); - break; - case 'programChange': - MIDI.programChange(channelId, event.programNumber, delay); - break; - case 'pitchBend': - MIDI.pitchBend(channelId, event.value, delay); - break; - case 'noteOn': - if (channel.mute) break; - note = event.noteNumber - (midi.MIDIOffset || 0); - eventQueue.push({ - event: event, - time: queueTime, - source: MIDI.noteOn(channelId, event.noteNumber, event.velocity, delay), - interval: scheduleTracking(channelId, note, queuedTime + midi.startDelay, offset - foffset, 144, event.velocity) - }); - messages++; - break; - case 'noteOff': - if (channel.mute) break; - note = event.noteNumber - (midi.MIDIOffset || 0); - eventQueue.push({ - event: event, - time: queueTime, - source: MIDI.noteOff(channelId, event.noteNumber, delay), - interval: scheduleTracking(channelId, note, queuedTime, offset - foffset, 128, 0) - }); - break; - default: - break; - } - } - /// - onsuccess && onsuccess(eventQueue); -}; - -var stopAudio = function() { - var ctx = getContext(); - midi.playing = false; - midi.restart += (ctx.currentTime - startTime) * 1000; - // stop the audio, and intervals - while (eventQueue.length) { - var o = eventQueue.pop(); - window.clearInterval(o.interval); - if (!o.source) continue; // is not webaudio - if (typeof(o.source) === 'number') { - window.clearTimeout(o.source); - } else { // webaudio - o.source.disconnect(0); - } - } - // run callback to cancel any notes still playing - for (var key in noteRegistrar) { - var o = noteRegistrar[key] - if (noteRegistrar[key].message === 144 && onMidiEvent) { - onMidiEvent({ - channel: o.channel, - note: o.note, - now: o.now, - end: o.end, - message: 128, - velocity: o.velocity - }); - } - } - // reset noteRegistrar - noteRegistrar = {}; -}; - -})(); \ No newline at end of file -- cgit v1.2.3