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/*
* Copyright © 2020 Luciano Iam <lucianito@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
import { MessageChannel, Node } from './channel.js';
export class Ardour {
constructor () {
this.channel = new MessageChannel(location.host);
}
async open () {
await this.channel.open();
}
close () {
this.channel.close();
}
async getAvailableSurfaces () {
const response = await fetch('/surfaces.json');
if (response.status == 200) {
return await response.json();
} else {
throw this._fetchResponseStatusError(response.status);
}
}
async getSurfaceManifest () {
const response = await fetch('manifest.xml');
if (response.status == 200) {
const xmlText = await response.text();
const xmlDoc = new DOMParser().parseFromString(xmlText, 'text/xml');
return {
name: xmlDoc.getElementsByTagName('Name')[0].getAttribute('value'),
description: xmlDoc.getElementsByTagName('Description')[0].getAttribute('value')
}
} else {
throw this._fetchResponseStatusError(response.status);
}
}
async getTempo () {
return await this._sendAndReceive(Node.TEMPO);
}
async getStripGain (stripId) {
return await this._sendAndReceive(Node.STRIP_GAIN, [stripId]);
}
async getStripPan (stripId) {
return await this._sendAndReceive(Node.STRIP_PAN, [stripId]);
}
async getStripMute (stripId) {
return await this._sendAndReceive(Node.STRIP_MUTE, [stripId]);
}
async getStripPluginEnable (stripId, pluginId) {
return await this._sendAndReceive(Node.STRIP_PLUGIN_ENABLE, [stripId, pluginId]);
}
async getStripPluginParamValue (stripId, pluginId, paramId) {
return await this._sendAndReceive(Node.STRIP_PLUGIN_PARAM_VALUE, [stripId, pluginId, paramId]);
}
async setTempo (bpm) {
this._send(Node.TEMPO, [], [bpm]);
}
async setStripGain (stripId, db) {
this._send(Node.STRIP_GAIN, [stripId], [db]);
}
async setStripPan (stripId, value) {
this._send(Node.STRIP_PAN, [stripId], [value]);
}
async setStripMute (stripId, value) {
this._send(Node.STRIP_MUTE, [stripId], [value]);
}
async setStripPluginEnable (stripId, pluginId, value) {
this._send(Node.STRIP_PLUGIN_ENABLE, [stripId, pluginId], [value]);
}
async setStripPluginParamValue (stripId, pluginId, paramId, value) {
this._send(Node.STRIP_PLUGIN_PARAM_VALUE, [stripId, pluginId, paramId], [value]);
}
async _send (addr, node, val) {
this.channel.send(new Message(addr, node, val));
}
async _sendAndReceive (addr, node, val) {
this._send(addr, node, val);
// TO DO - wait for response
}
_fetchResponseStatusError (status) {
return new Error(`HTTP response status ${status}`);
}
}
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