diff options
author | Brian Picciano <mediocregopher@gmail.com> | 2021-07-31 11:35:39 -0600 |
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committer | Brian Picciano <mediocregopher@gmail.com> | 2021-07-31 11:35:39 -0600 |
commit | f1998c321a4eec6d75b58d84aa8610971bf21979 (patch) | |
tree | a90783eb296cc50e1c48433f241624f26b99be27 /static/src/assets/trading-in-the-rain/MIDI.js/js/midi/plugin.webmidi.js | |
parent | 03a35dcc38b055f15df160bd300969e3b703d4b1 (diff) |
move static files into static sub-dir, refactor nix a bit
Diffstat (limited to 'static/src/assets/trading-in-the-rain/MIDI.js/js/midi/plugin.webmidi.js')
-rw-r--r-- | static/src/assets/trading-in-the-rain/MIDI.js/js/midi/plugin.webmidi.js | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/static/src/assets/trading-in-the-rain/MIDI.js/js/midi/plugin.webmidi.js b/static/src/assets/trading-in-the-rain/MIDI.js/js/midi/plugin.webmidi.js new file mode 100644 index 0000000..33e244b --- /dev/null +++ b/static/src/assets/trading-in-the-rain/MIDI.js/js/midi/plugin.webmidi.js @@ -0,0 +1,93 @@ +/* + ---------------------------------------------------------------------- + Web MIDI API - Native Soundbanks + ---------------------------------------------------------------------- + http://webaudio.github.io/web-midi-api/ + ---------------------------------------------------------------------- +*/ + +(function(root) { 'use strict'; + + var plugin = null; + var output = null; + var channels = []; + var midi = root.WebMIDI = {api: 'webmidi'}; + midi.send = function(data, delay) { // set channel volume + output.send(data, delay * 1000); + }; + + midi.setController = function(channel, type, value, delay) { + output.send([channel, type, value], delay * 1000); + }; + + midi.setVolume = function(channel, volume, delay) { // set channel volume + output.send([0xB0 + channel, 0x07, volume], delay * 1000); + }; + + midi.programChange = function(channel, program, delay) { // change patch (instrument) + output.send([0xC0 + channel, program], delay * 1000); + }; + + midi.pitchBend = function(channel, program, delay) { // pitch bend + output.send([0xE0 + channel, program], delay * 1000); + }; + + midi.noteOn = function(channel, note, velocity, delay) { + output.send([0x90 + channel, note, velocity], delay * 1000); + }; + + midi.noteOff = function(channel, note, delay) { + output.send([0x80 + channel, note, 0], delay * 1000); + }; + + midi.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); + } + }; + + midi.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); + } + }; + + midi.stopAllNotes = function() { + output.cancel(); + for (var channel = 0; channel < 16; channel ++) { + output.send([0xB0 + channel, 0x7B, 0]); + } + }; + + midi.connect = function(opts) { + root.setDefaultPlugin(midi); + var errFunction = function(err) { // well at least we tried! + if (window.AudioContext) { // Chrome + opts.api = 'webaudio'; + } else if (window.Audio) { // Firefox + opts.api = 'audiotag'; + } else { // no support + return; + } + root.loadPlugin(opts); + }; + /// + navigator.requestMIDIAccess().then(function(access) { + plugin = access; + var pluginOutputs = plugin.outputs; + if (typeof pluginOutputs == 'function') { // Chrome pre-43 + output = pluginOutputs()[0]; + } else { // Chrome post-43 + output = pluginOutputs[0]; + } + if (output === undefined) { // nothing there... + errFunction(); + } else { + opts.onsuccess && opts.onsuccess(); + } + }, errFunction); + }; + +})(MIDI);
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