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adding sound emulation in browser

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This commit is contained in:
Peli de Halleux 2016-03-13 21:24:11 -07:00
parent a751be2e97
commit d323995196
2 changed files with 149 additions and 93 deletions
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58
sim/libmbit.ts
View File

@ -332,13 +332,69 @@ namespace ks.rt.micro_bit {
export function servoSetPulse(pin: Pin, micros:number) { export function servoSetPulse(pin: Pin, micros:number) {
} }
module AudioContextManager {
var _context : any; // AudioContext
var _vco : any; //OscillatorNode;
var _vca: any; // GainNode;
function context() : any {
if (!_context) _context = freshContext();
return _context;
}
function freshContext() : any {
(<any>window).AudioContext = (<any>window).AudioContext || (<any>window).webkitAudioContext;
if ((<any>window).AudioContext) {
try {
// this call my crash.
// SyntaxError: audio resources unavailable for AudioContext construction
return new (<any>window).AudioContext();
} catch(e) {}
}
return undefined;
}
export function stop() {
if (_vca) _vca.gain.value = 0;
}
export function tone(frequency: number, gain: number) {
if (frequency <= 0) return;
var ctx = context();
if (!ctx) return;
gain = Math.max(0, Math.min(1, gain));
if (!_vco) {
try {
_vco = ctx.createOscillator();
_vca = ctx.createGain();
_vco.connect(_vca);
_vca.connect(ctx.destination);
_vca.gain.value = gain;
_vco.start(0);
} catch(e) {
_vco = undefined;
_vca = undefined;
return;
}
}
_vco.frequency.value = frequency;
_vca.gain.value = gain;
}
}
export function enablePitch(pin: Pin) { export function enablePitch(pin: Pin) {
pin.mode = PinMode.Analog | PinMode.Output; pin.mode = PinMode.Analog | PinMode.Output;
} }
export function pitch(frequency: number, ms: number) { export function pitch(frequency: number, ms: number) {
let cb = getResume(); let cb = getResume();
setTimeout(() => { cb() }, ms); AudioContextManager.tone(frequency, 1);
setTimeout(() => {
if (ms > 0) AudioContextManager.stop();
cb()
}, ms);
} }

80
sim/state.ts
View File

@ -9,37 +9,37 @@ namespace ks.rt.micro_bit {
} }
export enum PinMode { export enum PinMode {
Unused = 0, Unused = 0,
Digital = 0x0001, Digital = 0x0001,
Analog = 0x0002, Analog = 0x0002,
Input = 0x0004, Input = 0x0004,
Output = 0x0008, Output = 0x0008,
Touch = 0x0010 Touch = 0x0010
} }
export class Pin { export class Pin {
constructor(public id: number) {} constructor(public id: number) { }
touched = false; touched = false;
value = 0; value = 0;
mode = PinMode.Unused; mode = PinMode.Unused;
isTouched() : boolean { isTouched(): boolean {
this.mode = PinMode.Touch; this.mode = PinMode.Touch;
return this.touched; return this.touched;
} }
} }
export class Button { export class Button {
constructor(public id : number) {} constructor(public id: number) { }
pressed: boolean; pressed: boolean;
} }
export class EventBus { export class EventBus {
private queues : Map<EventQueue<number>> = {}; private queues: Map<EventQueue<number>> = {};
constructor(private runtime : Runtime) { } constructor(private runtime: Runtime) { }
listen(id:number, evid:number, handler: RefAction) { listen(id: number, evid: number, handler: RefAction) {
let k = id + ':' + evid; let k = id + ':' + evid;
let queue = this.queues[k]; let queue = this.queues[k];
if (!queue) queue = this.queues[k] = new EventQueue<number>(this.runtime); if (!queue) queue = this.queues[k] = new EventQueue<number>(this.runtime);
@ -54,21 +54,21 @@ namespace ks.rt.micro_bit {
} }
export interface PacketBuffer { export interface PacketBuffer {
data:number[]; data: number[];
rssi?:number; rssi?: number;
} }
export class RadioDatagram { export class RadioDatagram {
datagram: PacketBuffer[] = []; datagram: PacketBuffer[] = [];
lastReceived: PacketBuffer = { lastReceived: PacketBuffer = {
data:[0,0,0,0], data: [0, 0, 0, 0],
rssi: -1 rssi: -1
}; };
constructor(private runtime : Runtime) { constructor(private runtime: Runtime) {
} }
queue(packet : PacketBuffer) { queue(packet: PacketBuffer) {
if (this.datagram.length < 5) { if (this.datagram.length < 5) {
this.datagram.push(packet); this.datagram.push(packet);
let ens = enums(); let ens = enums();
@ -76,17 +76,17 @@ namespace ks.rt.micro_bit {
} }
} }
send(buffer : number[]) { send(buffer: number[]) {
Runtime.postMessage(<SimulatorRadioPacketMessage>{ Runtime.postMessage(<SimulatorRadioPacketMessage>{
type:'radiopacket', type: 'radiopacket',
data: buffer.slice(0, 8) data: buffer.slice(0, 8)
}) })
} }
recv() : PacketBuffer { recv(): PacketBuffer {
var r = this.datagram.shift(); var r = this.datagram.shift();
if (!r) r = { if (!r) r = {
data:[0,0,0,0], data: [0, 0, 0, 0],
rssi: -1 rssi: -1
}; };
return this.lastReceived = r; return this.lastReceived = r;
@ -96,9 +96,9 @@ namespace ks.rt.micro_bit {
export class RadioBus { export class RadioBus {
// uint8_t radioDefaultGroup = MICROBIT_RADIO_DEFAULT_GROUP; // uint8_t radioDefaultGroup = MICROBIT_RADIO_DEFAULT_GROUP;
groupId = 0; // todo groupId = 0; // todo
datagram : RadioDatagram; datagram: RadioDatagram;
constructor(private runtime : Runtime) { constructor(private runtime: Runtime) {
this.datagram = new RadioDatagram(runtime); this.datagram = new RadioDatagram(runtime);
} }
@ -109,7 +109,7 @@ namespace ks.rt.micro_bit {
broadcast(msg: number) { broadcast(msg: number) {
let ens = enums(); let ens = enums();
Runtime.postMessage(<SimulatorEventBusMessage>{ Runtime.postMessage(<SimulatorEventBusMessage>{
type:'eventbus', type: 'eventbus',
id: ens.MES_BROADCAST_GENERAL_ID, id: ens.MES_BROADCAST_GENERAL_ID,
eventid: msg eventid: msg
}) })
@ -123,7 +123,7 @@ namespace ks.rt.micro_bit {
} }
export interface SimulatorSerialMessage extends SimulatorMessage { export interface SimulatorSerialMessage extends SimulatorMessage {
id:string; id: string;
data: string; data: string;
} }
@ -136,7 +136,7 @@ namespace ks.rt.micro_bit {
id: string; id: string;
// the bus // the bus
bus : EventBus; bus: EventBus;
radio: RadioBus; radio: RadioBus;
// display // display
@ -147,10 +147,10 @@ namespace ks.rt.micro_bit {
// buttons // buttons
usesButtonAB: boolean = false; usesButtonAB: boolean = false;
buttons : Button[]; buttons: Button[];
// pins // pins
pins : Pin[]; pins: Pin[];
// serial // serial
serialIn: string[] = []; serialIn: string[] = [];
@ -207,15 +207,15 @@ namespace ks.rt.micro_bit {
} }
initAsync(msg : SimulatorRunMessage) : Promise<void> { initAsync(msg: SimulatorRunMessage): Promise<void> {
let options = (msg.options || {}) as RuntimeOptions; let options = (msg.options || {}) as RuntimeOptions;
let theme : micro_bit.IBoardTheme; let theme: micro_bit.IBoardTheme;
switch(options.theme) { switch (options.theme) {
case 'blue': theme = micro_bit.themes[0]; break; case 'blue': theme = micro_bit.themes[0]; break;
case 'yellow': theme = micro_bit.themes[1]; break; case 'yellow': theme = micro_bit.themes[1]; break;
case 'green': theme = micro_bit.themes[2]; break; case 'green': theme = micro_bit.themes[2]; break;
case 'red': theme = micro_bit.themes[3]; break; case 'red': theme = micro_bit.themes[3]; break;
default: theme = ks.rt.micro_bit.randomTheme(); default: theme = ks.rt.micro_bit.randomTheme();
} }
console.log('setting up microbit simulator') console.log('setting up microbit simulator')
@ -232,17 +232,17 @@ namespace ks.rt.micro_bit {
receiveMessage(msg: SimulatorMessage) { receiveMessage(msg: SimulatorMessage) {
if (!runtime || runtime.dead) return; if (!runtime || runtime.dead) return;
switch(msg.type || "") { switch (msg.type || "") {
case 'eventbus': case 'eventbus':
let ev = <SimulatorEventBusMessage>msg; let ev = <SimulatorEventBusMessage>msg;
this.bus.queue(ev.id, ev.eventid, ev.value); this.bus.queue(ev.id, ev.eventid, ev.value);
break; break;
case 'serial': case 'serial':
this.serialIn.push((<SimulatorSerialMessage>msg).data || ''); this.serialIn.push((<SimulatorSerialMessage>msg).data || '');
break; break;
case 'radiopacket': case 'radiopacket':
let packet = <SimulatorRadioPacketMessage>msg; let packet = <SimulatorRadioPacketMessage>msg;
this.radio.datagram.queue({ data: packet.data || [], rssi: packet.rssi || 0}) this.radio.datagram.queue({ data: packet.data || [], rssi: packet.rssi || 0 })
break; break;
} }
} }
@ -253,10 +253,10 @@ namespace ks.rt.micro_bit {
} }
serialOutBuffer: string = ''; serialOutBuffer: string = '';
writeSerial(s : string) { writeSerial(s: string) {
for(let i = 0; i < s.length;++i) { for (let i = 0; i < s.length; ++i) {
let c = s[i]; let c = s[i];
switch(c) { switch (c) {
case '\n': case '\n':
Runtime.postMessage(<SimulatorSerialMessage>{ Runtime.postMessage(<SimulatorSerialMessage>{
type: 'serial', type: 'serial',
@ -274,7 +274,7 @@ namespace ks.rt.micro_bit {
export class Image { export class Image {
public width: number; public width: number;
public data: number[]; public data: number[];
constructor(width: number, data: number[]) { constructor(width: number, data: number[]) {
this.width = width; this.width = width;
this.data = data; this.data = data;
@ -295,8 +295,8 @@ namespace ks.rt.micro_bit {
} }
} }
} }
public clear() : void { public clear(): void {
for(var i = 0;i < this.data.length; ++i) for (var i = 0; i < this.data.length; ++i)
this.data[i] = 0; this.data[i] = 0;
} }
} }