├── .dockerignore
├── .gitignore
├── Dockerfile
├── LICENSE
├── README.md
├── docker-compose.yml
├── package.json
├── presets
├── 0.json
├── 1.json
└── 2.json
├── server.js
├── static
├── javascripts
│ ├── app.js
│ ├── chat.js
│ ├── freesound.js
│ ├── impulse-response.js
│ ├── jquery.knob.min.js
│ ├── kit.js
│ ├── search.js
│ ├── socket.io.js
│ └── wave.js
├── sounds
│ ├── drum-samples
│ │ └── TR808
│ │ │ ├── hihat.mp3
│ │ │ ├── hihat.ogg
│ │ │ ├── kick.mp3
│ │ │ ├── kick.ogg
│ │ │ ├── snare.mp3
│ │ │ └── snare.ogg
│ └── impulse-responses
│ │ ├── irHall.ogg
│ │ └── matrix-reverb2.wav
└── stylesheets
│ └── styles.css
└── views
├── home.ejs
└── index.ejs
/.dockerignore:
--------------------------------------------------------------------------------
1 | .git
2 | .gitignore
3 | README.md
4 | docker-compose.yml
5 | node_modules
6 | npm-debug.log
7 | CODING_RULES
8 | LICENSE
9 |
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | # See http://help.github.com/ignore-files/ for more about ignoring files.
2 |
3 | # compiled output
4 | /dist
5 | /tmp
6 | /out-tsc
7 |
8 | # dependencies
9 | /node_modules
10 |
11 | # IDEs and editors
12 | /.idea
13 | .project
14 | .classpath
15 | .c9/
16 | *.launch
17 | .settings/
18 | *.sublime-workspace
19 |
20 | # IDE - VSCode
21 | .vscode/*
22 | !.vscode/settings.json
23 | !.vscode/tasks.json
24 | !.vscode/launch.json
25 | !.vscode/extensions.json
26 |
27 | # misc
28 | /.sass-cache
29 | /connect.lock
30 | /coverage
31 | /libpeerconnection.log
32 | npm-debug.log
33 | testem.log
34 | /typings
35 |
36 | # e2e
37 | /e2e/*.js
38 | /e2e/*.map
39 |
40 | # System Files
41 | .DS_Store
42 | Thumbs.db
43 |
44 | package-lock.json
45 |
--------------------------------------------------------------------------------
/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM node:carbon
2 |
3 | ADD . /src
4 | WORKDIR /src
5 | RUN npm install
6 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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534 | or that patent license was granted, prior to 28 March 2007.
535 |
536 | Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
542 | If conditions are imposed on you (whether by court order, agreement or
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547 | not convey it at all. For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 |
552 | 13. Use with the GNU Affero General Public License.
553 |
554 | Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
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558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
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587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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600 | 16. Limitation of Liability.
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610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
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616 | reviewing courts shall apply local law that most closely approximates
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620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # Multi Web Audio Step Sequencer
2 | A web collaborative step sequencer using [Freesound](https://freesound.org/) content.
3 | Built using Express.js, Web Audio API, Socket.io.
4 |
5 | The sequencer is available [here](https://labs.freesound.org/sequencer/).
6 |
7 | Step sequencer inspired by [Catarak Web Audio Sequencer](https://github.com/catarak/web-audio-sequencer).
8 |
9 |
10 | INSTALL (Docker)
11 | -------------------
12 | Note: You'll need to have [`docker`](https://docs.docker.com/install/) and [`docker-compose`](https://docs.docker.com/compose/install/) installed.
13 |
14 | ```
15 | docker-compose up
16 | ```
17 |
18 | INSTALL
19 | -------------------
20 |
21 | ```
22 | npm install
23 | npm install nodemon
24 | npm start
25 | ```
26 |
27 |
28 | DEPLOY
29 | -------------------
30 | The server is looking for the environment variables `MULT_WEB_SEQ_SERV`, `MULT_WEB_SEQ_SERV_P` and `BASE_PATH`. If undefined, they are set to *localhost*, *8080* and *""*.
31 | Setting `NODE_ENV` to production gives the best performance.
32 |
33 | - `MULT_WEB_SEQ_SERV`: The server where Node (or Docker) starts.
34 | - `MULT_WEB_SEQ_SERV_P`: The port to which the Node server is listening.
35 | - `BASE_PATH`: Base path which will be added to all the request links to the app.
36 |
37 | Example for starting the app on your sever using npm:
38 | ```
39 | export MULT_WEB_SEQ_SERV=myserver.com
40 | export MULT_WEB_SEQ_SERV_P=9050
41 | export NODE_ENV=production
42 | node server.js
43 | ```
44 |
45 | If you want to use Docker for the deployment, you will have to edit the docker-compose.yml file according to your settings.
46 |
--------------------------------------------------------------------------------
/docker-compose.yml:
--------------------------------------------------------------------------------
1 | web:
2 | build: .
3 | command: npm start
4 | ports:
5 | - "8080:8080"
6 | volumes:
7 | - .:/src
8 |
--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
1 | {
2 | "name": "multi-web-audio-sequencer",
3 | "version": "0.1.0",
4 | "description": "Multi-user step sequencer using Freesound content",
5 | "main": "server.js",
6 | "scripts": {
7 | "test": "echo \"Error: no test specified\" && exit 1",
8 | "start": "nodemon server.js"
9 | },
10 | "author": "Xavier Favory , Valentin Nerin, Nicolas Derouineau",
11 | "license": "GPL-3.0",
12 | "dependencies": {
13 | "body-parser": "^1.18.2",
14 | "bootstrap-slider": "^10.0.0",
15 | "cookie-parser": "^1.4.3",
16 | "cookie-session": "^1.3.2",
17 | "cookieparser": "^0.1.0",
18 | "ejs": "^2.5.7",
19 | "express": "^4.16.2",
20 | "express-session": "^1.15.6",
21 | "express-socket.io-session": "^1.3.2",
22 | "method-override": "^2.3.10",
23 | "nodemon": "^1.14.11",
24 | "session-file-store": "^1.1.2",
25 | "session.socket.io": "^0.2.1",
26 | "socket.io": "^2.0.4",
27 | "socket.io-express-session": "^0.1.3"
28 | },
29 | "devDependencies": {},
30 | "repository": {
31 | "type": "git",
32 | "url": "git+https://github.com/xavierfav/multi-web-audio-sequencer.git"
33 | },
34 | "bugs": {
35 | "url": "https://github.com/xavierfav/multi-web-audio-sequencer/issues"
36 | },
37 | "homepage": "https://github.com/xavierfav/multi-web-audio-sequencer#readme",
38 | "description": "INSTALL\r -------------------"
39 | }
40 |
--------------------------------------------------------------------------------
/presets/0.json:
--------------------------------------------------------------------------------
1 | {"sequenceLength":"32","tempo":88,"trackNames":["snare","hihat","guitar","loop","voice","voice","loop","voice"],"pads":[[0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]],"sounds":["https://freesound.org/data/previews/104/104241_1531859-lq.ogg","https://freesound.org/data/previews/44/44859_177850-lq.ogg","https://freesound.org/data/previews/17/17699_65446-lq.ogg","https://freesound.org/data/previews/167/167726_443790-lq.ogg","https://freesound.org/data/previews/31/31716_92661-lq.ogg","https://freesound.org/data/previews/31/31708_92661-lq.ogg","https://freesound.org/data/previews/22/22126_109943-lq.ogg","https://freesound.org/data/previews/279/279897_2050105-lq.ogg"],"waves":[[false,false],[false,false],[false,false],[false,false],[false,false],[false,false],[false,false],[0,3.1741510954501706]],"gains":[-9,-2,-6,-8,-3,-4,-8,3]}
2 |
--------------------------------------------------------------------------------
/presets/1.json:
--------------------------------------------------------------------------------
1 | {"sequenceLength":"64","tempo":60,"trackNames":["loop","Drum","Snare","fxClick","cata","tamb","loop"],"pads":[[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,1,0,1,0,0,0,1,0,1,0,0,0,1,1,0,0,0,1,0,1,0,1,0,1,0,0,0,1,1,1,1,0,0,0,1,0,0,0,1,0,0,0,1,1,1,1,1,1,0,0,0,1,1,1,0,0,0,1,1,1],[0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1],[0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0],[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0],[0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0],[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]],"sounds":["https://freesound.org/data/previews/214/214416_462105-lq.ogg","https://freesound.org/data/previews/347/347625_1126957-lq.ogg","https://freesound.org/data/previews/38/38934_14771-lq.ogg","https://freesound.org/data/previews/108/108335_1855536-lq.ogg","https://freesound.org/data/previews/237/237211_4280272-lq.ogg","https://freesound.org/data/previews/348/348073_6165769-lq.ogg","https://freesound.org/data/previews/18/18550_74084-lq.ogg"],"waves":[[false,false],[false,false],[false,false],[false,false],[0.12227827323959074,1.4106122448979592],[false,false],[false,false]],"gains":[5,-11,-6,-6,-16,-6,-19]}
2 |
--------------------------------------------------------------------------------
/presets/2.json:
--------------------------------------------------------------------------------
1 | {
2 | "sequenceLength": "64",
3 | "tempo": 88,
4 | "trackNames": [
5 | "kick",
6 | "snare",
7 | "skank 1",
8 | "LaLa",
9 | "Skank 2",
10 | "Lala2"
11 | ],
12 | "pads": [
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354 | 0,
355 | 0,
356 | 0,
357 | 0,
358 | 0,
359 | 0,
360 | 0,
361 | 0,
362 | 0,
363 | 0,
364 | 0,
365 | 0,
366 | 0,
367 | 0,
368 | 0,
369 | 0,
370 | 0,
371 | 0,
372 | 0,
373 | 0,
374 | 0,
375 | 0,
376 | 0,
377 | 0,
378 | 0,
379 | 0,
380 | 0,
381 | 0,
382 | 0,
383 | 0,
384 | 0,
385 | 0,
386 | 0,
387 | 0,
388 | 0,
389 | 0,
390 | 0,
391 | 0,
392 | 0,
393 | 0,
394 | 0,
395 | 0,
396 | 0,
397 | 0,
398 | 0,
399 | 1,
400 | 0,
401 | 0,
402 | 0,
403 | 0,
404 | 0,
405 | 0,
406 | 0,
407 | 0
408 | ]
409 | ],
410 | "sounds": [
411 | "/sequencer/assets/sounds/drum-samples/TR808/kick.ogg",
412 | "/sequencer/assets/sounds/drum-samples/TR808/snare.ogg",
413 | "https://freesound.org/data/previews/55/55713_692344-lq.ogg",
414 | "https://freesound.org/data/previews/183/183145_2140699-lq.ogg",
415 | "https://freesound.org/data/previews/55/55696_692344-lq.ogg",
416 | "https://freesound.org/data/previews/243/243876_3028938-lq.ogg"
417 | ],
418 | "waves": [
419 | [
420 | false,
421 | false
422 | ],
423 | [
424 | false,
425 | false
426 | ],
427 | [
428 | false,
429 | false
430 | ],
431 | [
432 | false,
433 | false
434 | ],
435 | [
436 | false,
437 | false
438 | ],
439 | [
440 | false,
441 | false
442 | ]
443 | ],
444 | "gains": [
445 | -2,
446 | -6,
447 | -7,
448 | -6,
449 | -6,
450 | -6
451 | ]
452 | }
453 |
--------------------------------------------------------------------------------
/server.js:
--------------------------------------------------------------------------------
1 | var express = require('express');
2 | var app = express();
3 | var session = require('express-session')({
4 | secret: process.env.SESSION_SECRET || "azaezaedzadzea",
5 | resave: true,
6 | saveUninitialized: true
7 | });
8 | var sharedsession = require("express-socket.io-session");
9 | var http = require('http').Server(app);
10 | var bodyParser = require('body-parser');
11 | var eventEmitter = require('events').EventEmitter
12 | var hostname = process.env.MULT_WEB_SEQ_SERV || 'localhost';
13 | var base_path = process.env.BASE_PATH || '';
14 | var hostnamePort = process.env.MULT_WEB_SEQ_SERV_P || '8080';
15 | var adminPassword = process.env.ADMIN_PASSWORD || 'admin';
16 | var freesoundClientToken = process.env.FREESOUND_TOKEN || 'bs5DQrWNL9d8zrQl0ApCvcQqwg0gg8ytGE60qg5o';
17 | var io = require('socket.io')(http, {path: base_path + '/socket.io'});
18 | var fs = require('fs');
19 |
20 | var fullservername = hostname + ':' + hostnamePort;
21 | var rooms = ["1", "2", "3", "4", "5", "6", "7", "8"];
22 | var roomUsers = [[], [], [], [], [], [], [], []];
23 | var roomLastConnections = [null, null, null, null, null, null, null, null];
24 |
25 | var sequencerState = {
26 | sequenceLength: 16,
27 | tempo: 120,
28 | trackNames: ['kick', 'snare', 'hihat'],
29 | pads: [
30 | Array(64).fill(0),
31 | Array(64).fill(0),
32 | Array(64).fill(0)
33 | ],
34 | sounds: [
35 | base_path + '/assets/sounds/drum-samples/TR808/kick.ogg',
36 | base_path + '/assets/sounds/drum-samples/TR808/snare.ogg',
37 | base_path + '/assets/sounds/drum-samples/TR808/hihat.ogg'
38 | ],
39 | waves: [
40 | [false, false],
41 | [false, false],
42 | [false, false]
43 | ],
44 | gains: [-6, -6, -6]
45 | };
46 |
47 | var sequencerPresetFiles = [];
48 | getListPresetFiles();
49 |
50 | var sequencerStates = [JSON.parse(JSON.stringify(sequencerState)),
51 | JSON.parse(JSON.stringify(sequencerState)),
52 | JSON.parse(JSON.stringify(sequencerState)),
53 | JSON.parse(JSON.stringify(sequencerState)),
54 | JSON.parse(JSON.stringify(sequencerState)),
55 | JSON.parse(JSON.stringify(sequencerState)),
56 | JSON.parse(JSON.stringify(sequencerState)),
57 | JSON.parse(JSON.stringify(sequencerState)),
58 | ];
59 |
60 |
61 | //moteur de template
62 | app.set('view engine', 'ejs');
63 |
64 | //middleware
65 | app.use(session);
66 | app.use(base_path + '/assets', express.static(__dirname + '/static'));
67 | app.use(base_path + '/assets', express.static(__dirname + '/node_modules'));
68 | io.use(sharedsession(session, {
69 | autoSave: true
70 | }));
71 | app.set('trust proxy', true)
72 |
73 |
74 | // ON CONNECTION CONNECT TO ROOM AND SEND STATE TO CLIENT
75 | io.sockets.on('connection', function (socket) {
76 | socket.on('room', function (room) {
77 | room--;
78 | console.log("New client connected to room: " + room);
79 | socket.join(room);
80 | socket.chatRoom = null;
81 |
82 | // store connection activity
83 | roomLastConnections[room] = new Date();
84 |
85 | // if username in session, autolog tu chat
86 | socket.username = socket.handshake.session.username;
87 | if (socket.username != null) {
88 | socket.chatRoom = room;
89 | roomUsers[room].push(socket.username);
90 | socket.emit('autoLogin', {
91 | numUsers: roomUsers[room].length,
92 | username: socket.username
93 | });
94 | // echo globally (all clients) that a person has connected
95 | socket.in(room).broadcast.emit('user joined', {
96 | username: socket.username,
97 | numUsers: roomUsers[room].length
98 | });
99 | }
100 |
101 | // send state
102 | socket.emit('SendCurrentState', sequencerStates[room]);
103 |
104 | // send preset names
105 | for (i = 0; i < sequencerPresetFiles.length; i++) {
106 | socket.emit('sendSaveSequencerPreset', sequencerPresetFiles[i].split('.')[0]);
107 | }
108 |
109 | // PAD RECEPTION VIA THE CLIENT
110 | socket.on('pad', function (message) {
111 | console.log('receive pad change: ' + message);
112 | socket.in(room).broadcast.emit('sendPad', message);
113 | var trackId = message[0];
114 | var padId = message[1];
115 | var padState = message[2];
116 | sequencerStates[room]['pads'][trackId][padId] = padState;
117 | });
118 |
119 | // TEMPO RECEPTION VIA THE CLIENT
120 | socket.on('tempo', function (message) {
121 | console.log('receive tempo change: ' + message);
122 | socket.in(room).broadcast.emit('tempo', message);
123 | var tempo = message;
124 | sequencerStates[room].tempo = tempo;
125 | });
126 |
127 | // NEW TRACK
128 | socket.on('newTrack', function (message) {
129 | console.log('receive new track: ' + message);
130 | var trackName = message[0];
131 | var soundUrl = message[1];
132 | var trackId = sequencerStates[room].trackNames.length;
133 | message.unshift(trackId);
134 | io.sockets.in(room).emit('sendNewTrack', message);
135 | sequencerStates[room].trackNames[trackId] = trackName;
136 | sequencerStates[room].pads[trackId] = Array(64).fill(0);
137 | sequencerStates[room].sounds[trackId] = soundUrl;
138 | sequencerStates[room].waves[trackId] = [false, false];
139 | sequencerStates[room].gains[trackId] = -6;
140 | });
141 |
142 | // LOAD SOUND INTO A TRACK
143 | socket.on('loadSound', function (message) {
144 | console.log('receive load sound: ' + message);
145 | socket.in(room).broadcast.emit('sendLoadSound', message);
146 | var trackId = message[0];
147 | var soundUrl = message[1];
148 | sequencerStates[room].sounds[trackId] = soundUrl;
149 | });
150 |
151 | // DELETE TRACK
152 | socket.on('deleteTrack', function (message) {
153 | console.log('receive delete track: ' + message);
154 | io.sockets.in(room).emit('sendDeleteTrack', message);
155 | var trackId = message;
156 | sequencerStates[room].trackNames.splice(trackId, 1);
157 | sequencerStates[room].sounds.splice(trackId, 1);
158 | sequencerStates[room].pads.splice(trackId, 1);
159 | sequencerStates[room].waves.splice(trackId, 1);
160 | sequencerStates[room].gains.splice(trackId, 1);
161 | });
162 |
163 | // CHANGE WAVE REGION
164 | socket.on('waveRegion', function (message) {
165 | var trackId = message[0];
166 | console.log('receive change wave region: ' + trackId);
167 | socket.in(room).broadcast.emit('sendWaveRegion', message);
168 | sequencerStates[room].waves[trackId] = [message[1], message[2]];
169 | });
170 |
171 | // CHANGE LENGTH SEQUENCE
172 | socket.on('sequenceLength', function (message) {
173 | console.log('receive change senquence length: ' + message);
174 | sequencerStates[room].sequenceLength = message;
175 | socket.in(room).broadcast.emit('sendSequenceLength', message);
176 | });
177 |
178 | // CHANGE TRACK GAIN
179 | socket.on('gain', function (message) {
180 | console.log('receive change gain: ' + message);
181 | sequencerStates[room].gains[message[0]] = message[1];
182 | socket.in(room).broadcast.emit('sendGain', message);
183 | });
184 |
185 | // SAVE PRESET
186 | socket.on('savePreset', function (message) {
187 | console.log('receive save preset');
188 | var presetName = message[1];
189 | var sequencerPresetState = JSON.parse(message[0]);
190 | savePreset(presetName, sequencerPresetState)
191 | io.sockets.in(room).emit('sendSaveSequencerPreset', presetName);
192 | });
193 |
194 | socket.on('loadPreset', function (message) {
195 | console.log('receive load preset');
196 | var preset = getPreset(message);
197 | sequencerStates[room] = preset;
198 | io.sockets.in(room).emit('sendSequencerPreset', JSON.stringify(preset));
199 | });
200 |
201 | // CHAT
202 | // when the client emits 'new message', this listens and executes
203 | socket.on('new message', function (data) {
204 | // we tell the client to execute 'new message'
205 | socket.in(room).broadcast.emit('new message', {
206 | username: socket.username,
207 | message: data
208 | });
209 | });
210 |
211 | // when the client emits 'add user', this listens and executes
212 | socket.on('add user', function (username) {
213 | if (socket.chatRoom != null) {
214 | console.log("Client change name on room: " + room);
215 | socket.in(room).broadcast.emit('user change name', {
216 | oldName: socket.username,
217 | newName: username
218 | });
219 | var index = roomUsers[socket.chatRoom].indexOf(socket.username);
220 | if (index > -1) {
221 | roomUsers[room].splice(index, 1);
222 | }
223 | socket.username = username;
224 | roomUsers[room].push(username);
225 | } else {
226 | socket.chatRoom = room;
227 | console.log("New client on the chat: " + room);
228 | roomUsers[room].push(username);
229 | // we store the username in the socket session for this client
230 | socket.username = username;
231 | socket.emit('login', {
232 | numUsers: roomUsers[room].length
233 | });
234 | // echo globally (all clients) that a person has connected
235 | socket.in(room).broadcast.emit('user joined', {
236 | username: socket.username,
237 | numUsers: roomUsers[room].length
238 | });
239 | }
240 | socket.handshake.session.username = username;
241 | socket.handshake.session.save();
242 | });
243 |
244 | // when the client emits 'typing', we broadcast it to others
245 | socket.on('typing', function () {
246 | socket.in(room).broadcast.emit('typing', {
247 | username: socket.username
248 | });
249 | });
250 |
251 | // when the client emits 'stop typing', we broadcast it to others
252 | socket.on('stop typing', function () {
253 | socket.in(room).broadcast.emit('stop typing', {
254 | username: socket.username
255 | });
256 | });
257 |
258 | // when the user disconnects.. perform this
259 | socket.on('disconnect', function () {
260 | if (socket.chatRoom != null) {
261 | console.log("A client left the chat of room: " + socket.chatRoom);
262 | // echo globally that this client has left
263 | socket.in(socket.chatRoom).broadcast.emit('user left', {
264 | username: socket.username,
265 | numUsers: roomUsers[socket.chatRoom].length - 1
266 | });
267 | // delete user from roomUsers lists
268 | var index = roomUsers[socket.chatRoom].indexOf(socket.username);
269 | if (index > -1) {
270 | roomUsers[room].splice(index, 1);
271 | }
272 | }
273 | });
274 | });
275 | });
276 |
277 |
278 | // PRESETS
279 | function getListPresetFiles() {
280 | fs.readdir('./presets/', function(err, items) {
281 | console.log("Existing presets: " + items);
282 | sequencerPresetFiles = items;
283 | });
284 | }
285 |
286 | function getPreset(presetId) {
287 | var preset = require('./presets/' + sequencerPresetFiles[presetId]);
288 | return require('./presets/' + sequencerPresetFiles[presetId]);
289 | }
290 |
291 | function savePreset(presetName, preset) {
292 | var jsonPreset = JSON.stringify(preset);
293 | fs.writeFile('./presets/' + presetName + '.json', jsonPreset, 'utf8');
294 | sequencerPresetFiles.push(presetName + '.json');
295 | }
296 |
297 |
298 | // ACTIVITY DATE
299 | function updateActivity(datetime) {
300 | var theevent = new Date(datetime);
301 | now = new Date();
302 | var sec_num = (now - theevent) / 1000;
303 | var days = Math.floor(sec_num / (3600 * 24));
304 | var hours = Math.floor((sec_num - (days * (3600 * 24))) / 3600);
305 | var minutes = Math.floor((sec_num - (days * (3600 * 24)) - (hours * 3600)) / 60);
306 | var seconds = Math.floor(sec_num - (days * (3600 * 24)) - (hours * 3600) - (minutes * 60));
307 |
308 | if (hours < 10) {
309 | hours = "0" + hours;
310 | }
311 | if (minutes < 10) {
312 | minutes = "0" + minutes;
313 | }
314 | if (seconds < 10) {
315 | seconds = "0" + seconds;
316 | }
317 |
318 | if (days > 1000) {
319 | return '-'
320 | } else if (days > 30) {
321 | return 'more than 30 days ago'
322 | } else {
323 | return days + ' days ' + hours + ' hours ' + minutes + ' min ' + seconds + ' s ';
324 | }
325 | }
326 |
327 | // VIEWS
328 | app.get(base_path + '/', (req, res) => {
329 | var room = req.query.room;
330 | var adminClient = req.query.admin == adminPassword;
331 | var roomInt = parseInt(room)
332 | if (Number.isInteger(roomInt) && roomInt > 0 && roomInt < 9) {
333 | res.render('index.ejs', {
334 | room: room,
335 | adminClient: adminClient,
336 | base_path: base_path
337 | });
338 | } else {
339 | var dateNow = new Date();
340 | var roomConnectionsAgo = roomLastConnections.map(function (e) {
341 | var time = updateActivity(e)
342 | if (time < 0) {
343 | time = 0;
344 | }
345 | return updateActivity(e)
346 | });
347 | res.render('home.ejs', {
348 | fullservername: fullservername,
349 | roomUsers: roomUsers,
350 | roomConnectionsAgo: roomConnectionsAgo,
351 | base_path: base_path
352 | });
353 | }
354 | });
355 |
356 |
357 | // AJAX
358 | app.get(base_path + '/get_freesound_token', function(req, res){
359 | res.send(freesoundClientToken);
360 | });
361 |
362 |
363 | http.listen(hostnamePort, function () {
364 | console.log('connecté sur le', fullservername);
365 | });
366 |
--------------------------------------------------------------------------------
/static/javascripts/app.js:
--------------------------------------------------------------------------------
1 | //audio node variables
2 | var context;
3 | var convolver;
4 | var compressor;
5 | var masterGainNode;
6 | var effectLevelNode;
7 | var lowPassFilterNode;
8 | var mediaRecorder;
9 | var recordingDest;
10 | var chunks = [];
11 |
12 | var noteTime;
13 | var startTime;
14 | var lastDrawTime = -1;
15 | var rhythmIndex = 0;
16 | var timeoutId;
17 | var testBuffer = null;
18 | var isRecording = false;
19 | var isPlaying = false;
20 |
21 | var currentSequencerState = null;
22 | var currentKit = null;
23 | var wave = null;
24 | var reverbImpulseResponse = null;
25 | var sequencerPresetNames = [];
26 |
27 | var tempo = 120;
28 | var TEMPO_MAX = 200;
29 | var TEMPO_MIN = 40;
30 | var TEMPO_STEP = 1;
31 | var MAXLENGTH = 64;
32 | var COMPRESSOR_ACTIVATED = false;
33 |
34 |
35 | if (window.hasOwnProperty('AudioContext') && !window.hasOwnProperty('webkitAudioContext')) {
36 | window.webkitAudioContext = AudioContext;
37 | }
38 |
39 | $(function () {
40 | init();
41 | addNewTrackEvent();
42 | addChangeSequenceLengthEvent();
43 | playPauseListener();
44 | RecordListener();
45 | lowPassFilterListener();
46 | reverbListener();
47 | createLowPassFilterSliders();
48 | initializeTempo();
49 | changeTempoListener();
50 | search = initSearch();
51 | });
52 |
53 | function createLowPassFilterSliders() {
54 | $("#freq-slider").slider({
55 | value: 1,
56 | min: 0,
57 | max: 1,
58 | step: 0.01,
59 | disabled: true,
60 | slide: changeFrequency
61 | });
62 | $("#quality-slider").slider({
63 | value: 0,
64 | min: 0,
65 | max: 1,
66 | step: 0.01,
67 | disabled: true,
68 | slide: changeQuality
69 | });
70 | }
71 |
72 | function lowPassFilterListener() {
73 | $('#lpf').click(function () {
74 | $(this).toggleClass("active");
75 | $(this).blur();
76 | if ($(this).hasClass("btn-default")) {
77 | $(this).removeClass("btn-default");
78 | $(this).addClass("btn-warning");
79 | lowPassFilterNode.active = true;
80 | $("#freq-slider,#quality-slider").slider("option", "disabled", false);
81 | } else {
82 | $(this).addClass("btn-default");
83 | $(this).removeClass("btn-warning");
84 | lowPassFilterNode.active = false;
85 | $("#freq-slider,#quality-slider").slider("option", "disabled", true);
86 | }
87 | });
88 | }
89 |
90 | function reverbListener() {
91 | $("#reverb").click(function () {
92 | $(this).toggleClass("active");
93 | $(this).blur();
94 | if ($(this).hasClass("btn-default")) {
95 | $(this).removeClass("btn-default");
96 | $(this).addClass("btn-warning");
97 | convolver.active = true;
98 | } else {
99 | $(this).addClass("btn-default");
100 | $(this).removeClass("btn-warning");
101 | convolver.active = false;
102 | }
103 | })
104 | }
105 |
106 | function changeFrequency(event, ui) {
107 | var minValue = 40;
108 | var maxValue = context.sampleRate / 2;
109 | var numberOfOctaves = Math.log(maxValue / minValue) / Math.LN2;
110 | var multiplier = Math.pow(2, numberOfOctaves * (ui.value - 1.0));
111 | lowPassFilterNode.frequency.value = maxValue * multiplier;
112 | }
113 |
114 | function changeQuality(event, ui) {
115 | //30 is the quality multiplier, for now.
116 | lowPassFilterNode.Q.value = ui.value * 30;
117 | }
118 |
119 | function checkAndTrigerPlayPause() {
120 | var $span = $('#play-pause').children("span");
121 | if ($span.hasClass('glyphicon-play')) {
122 | $span.removeClass('glyphicon-play');
123 | $span.addClass('glyphicon-pause');
124 | isPlaying = 1;
125 | handlePlay();
126 | } else {
127 | isPlaying = 0;
128 | $span.addClass('glyphicon-play');
129 | $span.removeClass('glyphicon-pause');
130 | handleStop();
131 | }
132 | }
133 |
134 | // TODO: work on this space stuff
135 | // Currently many keys are mapped to the play/pause button, and it avoids using them in the text inputes (space, arrows, delete, ...)
136 | //$(window).keypress(function (e) {
137 | // if (e.charCode === 0 || e.charCode === 32) {
138 | // e.preventDefault();
139 | // CheckAndTrigerPlayPause();
140 | // }
141 | //})
142 |
143 | function checkAndTrigerRecord() {
144 | if (!isRecording) {
145 | console.log("Record is triggered");
146 | isRecording = 1;
147 | $('#record').css('color', 'red');
148 | mediaRecorder.start();
149 | } else {
150 | console.log("Record is untriggered");
151 | isRecording = 0;
152 | $('#record').css('color', 'white');
153 | mediaRecorder.stop();
154 | }
155 | }
156 |
157 | function playPauseListener() {
158 | $('#play-pause').click(function () {
159 | checkAndTrigerPlayPause();
160 | });
161 | }
162 |
163 | function RecordListener() {
164 | $('#record').click(function () {
165 | checkAndTrigerRecord();
166 | });
167 | }
168 |
169 | function onDataAvailableInRecorderFunc(evt) {
170 | // push each chunk (blobs) in an array
171 | if (evt.data.size > 0) {
172 | chunks.push(evt.data);
173 | var blob = new Blob(chunks, {
174 | 'type': 'audio/ogg; codecs=opus'
175 | });
176 | var soundSrc = URL.createObjectURL(blob);
177 | var newHtmlEl = '
';
178 | $(newHtmlEl).appendTo(".exported-audio");
179 | chunks = [];
180 | }
181 | }
182 |
183 | function TranslateStateInActions(sequencerState) {
184 | var trackNames = sequencerState['trackNames'];
185 | var pads = sequencerState['pads'];
186 | var soundUrls = sequencerState['sounds'];
187 | var waves = sequencerState['waves'];
188 | var sequenceLength = sequencerState['sequenceLength'];
189 | var gains = sequencerState['gains'];
190 | var tempo = sequencerState['tempo'];
191 |
192 | // check if the tracks are already loaded
193 | if (JSON.stringify(sequencerState) != JSON.stringify(currentSequencerState)) {
194 | // Delete all existing tracks
195 | var numLocalTracks = $('.instrument').length;
196 | for (var i = numLocalTracks - 1; i >= 0; i--) {
197 | deleteTrack(i);
198 | }
199 |
200 | currentSequencerState = sequencerState;
201 |
202 | // change tempo
203 | changeTempo(tempo);
204 |
205 | // change seuquence length
206 | changeSequenceLength(sequenceLength);
207 |
208 | // Add tracks and load buffers
209 | for (var j = 0; j < trackNames.length; j++) {
210 | addNewTrack(j, trackNames[j], soundUrls[j], waves[j][0], waves[j][1], gains[j], pads[j]);
211 | }
212 |
213 | // Activate pads
214 | for (var i = 0; i < trackNames.length; i++) {
215 | var trackTabs = pads[i];
216 | for (var j = 0; j < trackTabs.length; j++) {
217 | toggleSelectedListenerSocket(i, j, trackTabs[j]);
218 | }
219 | }
220 | }
221 | }
222 |
223 | function toggleSelectedListener(padEl) {
224 | padEl.toggleClass("selected");
225 | var trackId = padEl.parent().parent().index();
226 | var padClass = padEl.attr('class');
227 | var padId = padClass.split(' ')[1].split('_')[1];
228 | var padState = (padEl.hasClass("selected")) ? 1 : 0;
229 | currentSequencerState.pads[trackId][padId] = padState;
230 | return [trackId, padId, padState]
231 | }
232 |
233 | function toggleSelectedListenerSocket(trackId, padId, padState) {
234 | var padEl = $('.instrument').eq(trackId).find('.pad').eq(parseInt(padId));
235 | var currentState = padEl.hasClass("selected");
236 | if (currentState) {
237 | if (padState == 0) {
238 | padEl.removeClass("selected");
239 | }
240 | } else {
241 | if (padState == 1) {
242 | padEl.addClass("selected");
243 | }
244 | }
245 | currentSequencerState.pads[trackId][padId] = padState;
246 | }
247 |
248 | // SEQUENCER SCHEDULER
249 | function init() {
250 | initializeAudioNodes();
251 | loadKits();
252 | loadImpulseResponses();
253 | }
254 |
255 | function initializeAudioNodes() {
256 | context = new webkitAudioContext();
257 | recordingDest = context.createMediaStreamDestination();
258 | mediaRecorder = new MediaRecorder(recordingDest.stream);
259 |
260 | mediaRecorder.ondataavailable = onDataAvailableInRecorderFunc;
261 |
262 | var finalMixNode;
263 | if (context.createDynamicsCompressor && COMPRESSOR_ACTIVATED) {
264 | // Create a dynamics compressor to sweeten the overall mix.
265 | compressor = context.createDynamicsCompressor();
266 | compressor.connect(context.destination);
267 | finalMixNode = compressor;
268 | } else {
269 | // No compressor available in this implementation.
270 | finalMixNode = context.destination;
271 | }
272 |
273 | // Create master volume.
274 | // for now, the master volume is static, but in the future there will be a slider
275 | masterGainNode = context.createGain();
276 | masterGainNode.gain.value = 0.7; // reduce overall volume to avoid clipping
277 | masterGainNode.connect(finalMixNode);
278 |
279 | //connect all sounds to masterGainNode to play them
280 | //don't need this for now, no wet dry mix for effects
281 | // // Create effect volume.
282 | // effectLevelNode = context.createGain();
283 | // effectLevelNode.gain.value = 1.0; // effect level slider controls this
284 | // effectLevelNode.connect(masterGainNode);
285 |
286 | // Create convolver for effect
287 | convolver = context.createConvolver();
288 | convolver.active = false;
289 | // convolver.connect(effectLevelNode);
290 |
291 | //Create Low Pass Filter
292 | lowPassFilterNode = context.createBiquadFilter();
293 | //this is for backwards compatibility, the type used to be an integer
294 | lowPassFilterNode.type = (typeof lowPassFilterNode.type === 'string') ? 'lowpass' : 0; // LOWPASS
295 | //default value is max cutoff, or passing all frequencies
296 | lowPassFilterNode.frequency.value = context.sampleRate / 2;
297 | lowPassFilterNode.connect(masterGainNode);
298 | lowPassFilterNode.active = false;
299 | }
300 |
301 | function loadKits() {
302 | //name must be same as path
303 | var kit = new Kit("TR808");
304 |
305 | //TODO: figure out how to test if a kit is loaded
306 | currentKit = kit;
307 | }
308 |
309 | function loadImpulseResponses() {
310 | reverbImpulseResponse = new ImpulseResponse("sounds/impulse-responses/matrix-reverb2.wav");
311 | reverbImpulseResponse.load();
312 | }
313 |
314 | function playNote(buffer, noteTime, startTime, endTime, gainNode, soloMuteNode) {
315 | var voice = context.createBufferSource();
316 | voice.buffer = buffer;
317 |
318 | var currentLastNode = masterGainNode;
319 | if (lowPassFilterNode.active) {
320 | lowPassFilterNode.connect(currentLastNode);
321 | currentLastNode = lowPassFilterNode;
322 | }
323 | if (convolver.active) {
324 | convolver.buffer = reverbImpulseResponse.buffer;
325 | convolver.connect(currentLastNode);
326 | currentLastNode = convolver;
327 | }
328 |
329 | voice.connect(soloMuteNode);
330 | soloMuteNode.connect(gainNode);
331 | gainNode.connect(currentLastNode);
332 | gainNode.connect(recordingDest);
333 | voice.start(noteTime, startTime, endTime - startTime);
334 | }
335 |
336 | function schedule() {
337 | var currentTime = context.currentTime;
338 |
339 | // The sequence starts at startTime, so normalize currentTime so that it's 0 at the start of the sequence.
340 | currentTime -= startTime;
341 |
342 | while (noteTime < currentTime + 0.200) {
343 | var contextPlayTime = noteTime + startTime;
344 | currentSequencerState.pads.forEach(function (entry, trackId) {
345 | if (entry[rhythmIndex] == 1) {
346 | wave = currentKit.waves[trackId];
347 | playNote(currentKit.buffers[trackId],
348 | contextPlayTime, wave.startTime, wave.endTime,
349 | currentKit.gainNodes[trackId], currentKit.soloMuteNodes[trackId]);
350 | }
351 | });
352 | if (noteTime != lastDrawTime) {
353 | lastDrawTime = noteTime;
354 | drawPlayhead(rhythmIndex);
355 | }
356 | if (isPlaying)
357 | advanceNote();
358 | }
359 | if (isPlaying)
360 | timeoutId = setTimeout(schedule, 50);
361 | }
362 |
363 | function drawPlayhead(xindex) {
364 | var lastIndex = (xindex + currentKit.sequenceLength - 1) % currentKit.sequenceLength;
365 |
366 | //can change this to class selector to select a column
367 | var $newRows = $('.column_' + xindex);
368 | var $oldRows = $('.column_' + lastIndex);
369 |
370 | $newRows.addClass("playing");
371 | $oldRows.removeClass("playing");
372 | }
373 |
374 | function advanceNote() {
375 | // Advance time by a 16th note...
376 | tempo = currentSequencerState.tempo;
377 | var secondsPerBeat = 60.0 / tempo;
378 | rhythmIndex++;
379 | if (rhythmIndex == currentKit.sequenceLength) {
380 | rhythmIndex = 0;
381 | }
382 |
383 | //0.25 because each square is a 16th note
384 | noteTime += 0.25 * secondsPerBeat
385 | // if (rhythmIndex % 2) {
386 | // noteTime += (0.25 + kMaxSwing * theBeat.swingFactor) * secondsPerBeat;
387 | // } else {
388 | // noteTime += (0.25 - kMaxSwing * theBeat.swingFactor) * secondsPerBeat;
389 | // }
390 |
391 | }
392 |
393 | function handlePlay(event) {
394 | rhythmIndex = 0;
395 | noteTime = 0.0;
396 | startTime = context.currentTime + 0.005;
397 | schedule();
398 | }
399 |
400 | function handleStop(event) {
401 | clearTimeout(timeoutId);
402 | $(".pad").removeClass("playing");
403 | }
404 |
405 | function initializeTempo() {
406 | $("#tempo-input").val(tempo);
407 | }
408 |
409 | function changeTempo(tempo_input) {
410 | tempo = tempo_input;
411 | $("#tempo-input").val(tempo_input);
412 | currentSequencerState.tempo = tempo;
413 | }
414 |
415 | function changeTempoListener() {
416 | $("#increase-tempo").click(function () {
417 | if (tempo < TEMPO_MAX) {
418 | tempo += TEMPO_STEP;
419 | changeTempo(tempo);
420 | sendTempo(tempo);
421 | }
422 | });
423 |
424 | $("#decrease-tempo").click(function () {
425 | if (tempo > TEMPO_MIN) {
426 | tempo -= TEMPO_STEP;
427 | changeTempo(tempo);
428 | sendTempo(tempo);
429 | }
430 | });
431 | }
432 |
433 |
434 | // SEQUENCER ACTIONS
435 | function addNewTrackEvent() {
436 | function newTrack() {
437 | var trackName = $('#newTrackName').val();
438 | var trackId = $('.instrument').length;
439 | // this action needs to be call in the same order in all clients in order to keep same order of tracks
440 | // we first send to server which will emit back the action
441 | // send to server
442 | sendNewTrack(trackName, null);
443 | }
444 | $('#addNewTrack').click(function () {
445 | newTrack();
446 | });
447 | $('#add-track-form').submit(function () {
448 | newTrack();
449 | });
450 | }
451 |
452 | function addNewTrackDetails() {
453 | $('#trackDetails').fadeIn('slow');
454 | $('#newTrackName').focus();
455 |
456 | $('#addNewTrack').on('click', function () {
457 | $('#trackDetails').fadeOut('slow');
458 | });
459 | $('#add-track-form').submit(function () {
460 | $('#trackDetails').fadeOut('slow');
461 | });
462 |
463 | $('#newTrackName').keyup(function () {
464 | if ($(this).val() != '') {
465 | $('#addNewTrack').removeAttr('disabled');
466 | } else {
467 | $('#addNewTrack').attr('disabled', 'disabled')
468 | }
469 | });
470 | }
471 |
472 | function addNewTrack(trackId, trackName, soundUrl = null, startTime = null, endTime = null, gain = -6, pads = null) {
473 | var uniqueTrackId = Date.now();
474 |
475 | // update sequencer state
476 | currentSequencerState.trackNames[trackId] = trackName;
477 | currentSequencerState.pads[trackId] = pads !== null ? pads : Array(64).fill(0);
478 | currentSequencerState.sounds[trackId] = soundUrl;
479 | currentSequencerState.waves[trackId] = [startTime, endTime];
480 | currentSequencerState.gains[trackId] = gain;
481 |
482 | // create html
483 | var padEl = '
\n\n
\n';
484 |
485 | for (var i = 1; i < MAXLENGTH; i++) {
486 | if (i < currentKit.sequenceLength) {
487 | if (i % 16 == 0 && i != 0) {
488 | padEl = padEl + ' ';
489 | }
490 | padEl = padEl + '
\n\n
\n';
491 | } else {
492 | if (i % 16 == 0 && i != 0) {
493 | padEl = padEl + ' ';
494 | }
495 | padEl = padEl + '