mirror of
https://github.com/scratchfoundation/scratch-html5.git
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216 lines
8.5 KiB
JavaScript
216 lines
8.5 KiB
JavaScript
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// Copyright (C) 2013 Massachusetts Institute of Technology
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License version 2,
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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// SoundBank.js
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// Tim Mickel, 2013
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// Based on the original AS by John Maloney - Scratch 1.4 compatibility removed
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//
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// A collection of instrument and drum resources to support the note and drum commands.
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var SoundBank = function() {};
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// -----------------------------
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// Scratch 2.0 Instrument Definitions
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//------------------------------
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// Each instrument is an array of one or more key-span entries of the following form:
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//
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// top key of key span, sampleName, midiKey, loopStart, loopEnd, [attack, hold, decay]
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//
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// The loop points are -1 if the sound is unlooped (e.g. Marimba).
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// The three-element envelop array may be omitted if the instrument has no envelope.
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SoundBank.instruments = [
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[[38, 'AcousticPiano_As3', 58, 10266, 17053, [0, 100, 22]],
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[44, 'AcousticPiano_C4', 60, 13968, 18975, [0, 100, 20]],
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[51, 'AcousticPiano_G4', 67, 12200, 12370, [0, 80, 18]],
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[62, 'AcousticPiano_C6', 84, 13042, 13276, [0, 80, 16]],
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[70, 'AcousticPiano_F5', 77, 12425, 12965, [0, 40, 14]],
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[77, 'AcousticPiano_Ds6', 87, 12368, 12869, [0, 20, 10]],
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[85, 'AcousticPiano_Ds6', 87, 12368, 12869, [0, 0, 8]],
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[90, 'AcousticPiano_Ds6', 87, 12368, 12869, [0, 0, 6]],
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[96, 'AcousticPiano_D7', 98, 7454, 7606, [0, 0, 3]],
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[128, 'AcousticPiano_D7', 98, 7454, 7606, [0, 0, 2]]],
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[[48, 'ElectricPiano_C2', 36, 15338, 17360, [0, 80, 10]],
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[74, 'ElectricPiano_C4', 60, 11426, 12016, [0, 40, 8]],
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[128, 'ElectricPiano_C4', 60, 11426, 12016, [0, 0, 6]]],
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[[128, 'Organ_G2', 43, 1306, 3330]],
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[[40, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 15]],
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[56, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 13.5]],
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[60, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 12]],
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[67, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 8.5]],
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[72, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 7]],
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[83, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 5.5]],
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[128, 'AcousticGuitar_F3', 53, 36665, 36791, [0, 0, 4.5]]],
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[[40, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 15]],
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[56, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 13.5]],
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[60, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 12]],
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[67, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 8.5]],
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[72, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 7]],
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[83, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 5.5]],
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[128, 'ElectricGuitar_F3', 53, 34692, 34945, [0, 0, 4.5]]],
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[[34, 'ElectricBass_G1', 31, 41912, 42363, [0, 0, 17]],
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[48, 'ElectricBass_G1', 31, 41912, 42363, [0, 0, 14]],
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[64, 'ElectricBass_G1', 31, 41912, 42363, [0, 0, 12]],
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[128, 'ElectricBass_G1', 31, 41912, 42363, [0, 0, 10]]],
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[[38, 'Pizz_G2', 43, 8554, 8782, [0, 0, 5]],
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[45, 'Pizz_G2', 43, 8554, 8782, [0, 12, 4]],
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[56, 'Pizz_A3', 57, 11460, 11659, [0, 0, 4]],
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[64, 'Pizz_A3', 57, 11460, 11659, [0, 0, 3.2]],
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[72, 'Pizz_E4', 64, 17525, 17592, [0, 0, 2.8]],
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[80, 'Pizz_E4', 64, 17525, 17592, [0, 0, 2.2]],
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[128, 'Pizz_E4', 64, 17525, 17592, [0, 0, 1.5]]],
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[[41, 'Cello_C2', 36, 8548, 8885],
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[52, 'Cello_As2', 46, 7465, 7845],
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[62, 'Violin_D4', 62, 10608, 11360],
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[75, 'Violin_A4', 69, 3111, 3314, [70, 0, 0]],
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[128, 'Violin_E5', 76, 2383, 2484]],
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[[30, 'BassTrombone_A2_3', 45, 1357, 2360],
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[40, 'BassTrombone_A2_2', 45, 1893, 2896],
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[55, 'Trombone_B3', 59, 2646, 3897],
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[88, 'Trombone_B3', 59, 2646, 3897, [50, 0, 0]],
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[128, 'Trumpet_E5', 76, 2884, 3152]],
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[[128, 'Clarinet_C4', 60, 14540, 15468]],
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[[40, 'TenorSax_C3', 48, 8939, 10794],
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[50, 'TenorSax_C3', 48, 8939, 10794, [20, 0, 0]],
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[59, 'TenorSax_C3', 48, 8939, 10794, [40, 0, 0]],
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[67, 'AltoSax_A3', 57, 8546, 9049],
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[75, 'AltoSax_A3', 57, 8546, 9049, [20, 0, 0]],
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[80, 'AltoSax_A3', 57, 8546, 9049, [20, 0, 0]],
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[128, 'AltoSax_C6', 84, 1258, 1848]],
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[[61, 'Flute_B5_2', 83, 1859, 2259],
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[128, 'Flute_B5_1', 83, 2418, 2818]],
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[[128, 'WoodenFlute_C5', 72, 11426, 15724]],
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[[57, 'Bassoon_C3', 48, 2428, 4284],
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[67, 'Bassoon_C3', 48, 2428, 4284, [40, 0, 0]],
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[76, 'Bassoon_C3', 48, 2428, 4284, [80, 0, 0]],
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[84, 'EnglishHorn_F3', 53, 7538, 8930, [40, 0, 0]],
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[128, 'EnglishHorn_D4', 62, 4857, 5231]],
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[[39, 'Choir_F3', 53, 14007, 41281],
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[50, 'Choir_F3', 53, 14007, 41281, [40, 0, 0]],
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[61, 'Choir_F3', 53, 14007, 41281, [60, 0, 0]],
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[72, 'Choir_F4', 65, 16351, 46436],
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[128, 'Choir_F5', 77, 18440, 45391]],
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[[38, 'Vibraphone_C3', 48, 6202, 6370, [0, 100, 8]],
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[48, 'Vibraphone_C3', 48, 6202, 6370, [0, 100, 7.5]],
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[59, 'Vibraphone_C3', 48, 6202, 6370, [0, 60, 7]],
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[70, 'Vibraphone_C3', 48, 6202, 6370, [0, 40, 6]],
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[78, 'Vibraphone_C3', 48, 6202, 6370, [0, 20, 5]],
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[86, 'Vibraphone_C3', 48, 6202, 6370, [0, 0, 4]],
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[128, 'Vibraphone_C3', 48, 6202, 6370, [0, 0, 3]]],
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[[128, 'MusicBox_C4', 60, 14278, 14700, [0, 0, 2]]],
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[[128, 'SteelDrum_D5', 74.4, -1, -1, [0, 0, 2]]],
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[[128, 'Marimba_C4', 60, -1, -1]],
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[[80, 'SynthLead_C4', 60, 135, 1400],
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[128, 'SynthLead_C6', 84, 124, 356]],
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[[38, 'SynthPad_A3', 57, 4212, 88017, [50, 0, 0]],
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[50, 'SynthPad_A3', 57, 4212, 88017, [80, 0, 0]],
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[62, 'SynthPad_A3', 57, 4212, 88017, [110, 0, 0]],
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[74, 'SynthPad_A3', 57, 4212, 88017, [150, 0, 0]],
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[86, 'SynthPad_A3', 57, 4212, 88017, [200, 0, 0]],
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[128, 'SynthPad_C6', 84, 2575, 9202]],
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];
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// -----------------------------
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// Scratch 2.0 Drum Definitions
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//------------------------------
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// Each drum entry is an array of of the form:
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//
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// sampleName, pitchAdjust, [loopStart, loopEnd, decay]
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//
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// pitchAdjust (pitch shift in semitones) adjusts the original pitch.
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// The loop points and decay parameter may be omitted if the drum is unlooped.
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// (A few drums are looped to create several different pitched drums from one sample.)
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SoundBank.drums = [
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['SnareDrum', 0],
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['Tom', 0],
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['SideStick', 0],
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['Crash', -7],
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['HiHatOpen', -8],
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['HiHatClosed', 0],
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['Tambourine', 0],
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['Clap', 0],
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['Claves', 0],
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['WoodBlock', -4],
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['Cowbell', 0],
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['Triangle', -6, 16843, 17255, 2],
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['Bongo', 2],
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['Conga', -7, 4247, 4499, 2], // jhm decay
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['Cabasa', 0],
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['GuiroLong', 0],
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['Vibraslap', -6],
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['Cuica', -5],
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];
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SoundBank.getNotePlayer = function(instNum, midiKey) {
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// Return a NotePlayer for the given Scratch 2.0 instrument number (1..21)
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// and MIDI key (0..127). If the instrument is out of range, use 1.
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var r = SoundBank.getNoteRecord(instNum - 1, midiKey);
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var env = (r.length > 5) ? r[5] : null;
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return new NotePlayer(Instr.samples[r[1]], SoundBank.pitchForKey(r[2]), r[3], r[4], env);
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}
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SoundBank.getNoteRecord = function(instNum, midiKey) {
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// Get a note record for the given instrument number.
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if ((instNum < 0) || (instNum >= SoundBank.instruments.length)) instNum = 0;
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var keyRanges = SoundBank.instruments[instNum];
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for (var r = 0; r < keyRanges.length; r++) {
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var topOfKeyRange = keyRanges[r][0];
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if (midiKey <= topOfKeyRange) return keyRanges[r];
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}
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return keyRanges[keyRanges.length - 1]; // return the note record for the top key range.
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}
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SoundBank.pitchForKey = function(midiKey) {
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return 440 * Math.pow(2, (midiKey - 69) / 12); // midi key 69 is A=440 Hz
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}
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SoundBank.getDrumPlayer = function(drumNum, secs) {
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// Return a NotePlayer for the given drum number.
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var entry = SoundBank.drums[drumNum - 1];
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if (entry == null) entry = SoundBank.drums[2];
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var loopStart = -1, loopEnd = -1, env = null;
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if (entry.length >= 4) {
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loopStart = entry[2];
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loopEnd = entry[3];
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}
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if (entry.length >= 5) env = [0, 0, entry[4]];
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var player = new NotePlayer(Instr.samples[entry[0]], SoundBank.pitchForKey(60), loopStart, loopEnd, env);
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player.setNoteAndDuration(60 + entry[1], 0);
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return player;
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}
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