mirror of https://github.com/nealey/vail.git
490 lines
8.7 KiB
JavaScript
490 lines
8.7 KiB
JavaScript
/**
|
||
* A number of keyers.
|
||
*
|
||
* The document "All About Squeeze-Keying" by Karl Fischer, DJ5IL, was
|
||
* absolutely instrumental in correctly (I hope) implementing everything more
|
||
* advanced than the bug keyer.
|
||
*/
|
||
|
||
import * as RoboKeyer from "./robokeyer.mjs"
|
||
import * as time from "./time.mjs"
|
||
|
||
/** Silent period between dits and dash */
|
||
const PAUSE = -1
|
||
/** Length of a dit */
|
||
const DIT = 1
|
||
/** Length of a dah */
|
||
const DAH = 3
|
||
|
||
/**
|
||
* Queue Set: A Set you can shift and pop.
|
||
*
|
||
* Performance of this implementation may be bad for large sets.
|
||
*/
|
||
class QSet extends Set {
|
||
shift() {
|
||
let r = [...this].shift()
|
||
this.delete(r)
|
||
return r
|
||
}
|
||
|
||
pop() {
|
||
let r = [...this].pop()
|
||
this.delete(r)
|
||
return r
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Definition of a transmitter type.
|
||
*
|
||
* The VailClient class implements this.
|
||
*/
|
||
class Transmitter {
|
||
/** Begin transmitting */
|
||
BeginTx() {}
|
||
|
||
/** End transmitting */
|
||
EndTx() {}
|
||
}
|
||
|
||
/**
|
||
* A straight keyer.
|
||
*
|
||
* This is one or more relays wired in parallel. Each relay has an associated
|
||
* input key. You press any key, and it starts transmitting until all keys are
|
||
* released.
|
||
*/
|
||
class StraightKeyer {
|
||
/**
|
||
* @param {Transmitter} output Transmitter object
|
||
*/
|
||
constructor(output) {
|
||
this.output = output
|
||
this.Reset()
|
||
}
|
||
|
||
/**
|
||
* Returns a list of names for keys supported by this keyer.
|
||
*
|
||
* @returns {Array.<string>} A list of key names
|
||
*/
|
||
KeyNames() {
|
||
return ["Key"]
|
||
}
|
||
|
||
/**
|
||
* Reset state and stop all transmissions.
|
||
*/
|
||
Reset() {
|
||
this.output.EndTx()
|
||
this.txRelays = []
|
||
}
|
||
|
||
/**
|
||
* Set the duration of dit.
|
||
*
|
||
* @param {Duration} d New dit duration
|
||
*/
|
||
SetDitDuration(d) {
|
||
this.ditDuration = d
|
||
}
|
||
|
||
/**
|
||
* Clean up all timers, etc.
|
||
*/
|
||
Release() {}
|
||
|
||
/**
|
||
* Returns the state of a single transmit relay.
|
||
*
|
||
* If n is not provided, return the state of all relays wired in parallel.
|
||
*
|
||
* @param {number} n Relay number
|
||
* @returns {bool} True if relay is closed
|
||
*/
|
||
TxClosed(n=null) {
|
||
if (n == null) {
|
||
return this.txRelays.some(Boolean)
|
||
}
|
||
return this.txRelays[n]
|
||
}
|
||
|
||
/**
|
||
* Close a transmit relay.
|
||
*
|
||
* In most of these keyers, you have multiple things that can transmit. In
|
||
* the circuit, they'd all be wired together in parallel. We instead keep
|
||
* track of relay state here, and start or stop transmitting based on the
|
||
* logical of of all relays.
|
||
*
|
||
* @param {number} n Relay number
|
||
* @param {bool} closed True if relay should be closed
|
||
*/
|
||
Tx(n, closed) {
|
||
let wasClosed = this.TxClosed()
|
||
this.txRelays[n] = closed
|
||
let nowClosed = this.TxClosed()
|
||
|
||
if (wasClosed != nowClosed) {
|
||
if (nowClosed) {
|
||
this.output.BeginTx()
|
||
} else {
|
||
this.output.EndTx()
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* React to a key being pressed.
|
||
*
|
||
* @param {number} key Which key was pressed
|
||
* @param {bool} pressed True if the key was pressed
|
||
*/
|
||
Key(key, pressed) {
|
||
this.Tx(key, pressed)
|
||
}
|
||
}
|
||
|
||
/**
|
||
* A "Cootie" or "Double Speed Key" is just two straight keys in parallel.
|
||
*/
|
||
class CootieKeyer extends StraightKeyer {
|
||
KeyNames() {
|
||
return ["Key", "Key"]
|
||
}
|
||
}
|
||
|
||
/**
|
||
* A Vibroplex "Bug".
|
||
*
|
||
* Left key send dits over and over until you let go.
|
||
* Right key works just like a stright key.
|
||
*/
|
||
class BugKeyer extends StraightKeyer {
|
||
KeyNames() {
|
||
return ["Dit ", "Key"]
|
||
}
|
||
|
||
Reset() {
|
||
super.Reset()
|
||
this.SetDitDuration(100 * time.Millisecond)
|
||
if (this.pulseTimer) {
|
||
clearInterval(this.pulseTimer)
|
||
this.pulseTimer = null
|
||
}
|
||
this.keyPressed = [false, false]
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
this.keyPressed[key] = pressed
|
||
if (key == 0) {
|
||
this.beginPulsing()
|
||
} else {
|
||
super.Key(key, pressed)
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Begin a pulse if it hasn't already begun
|
||
*/
|
||
beginPulsing() {
|
||
if (!this.pulseTimer) {
|
||
this.pulse()
|
||
}
|
||
}
|
||
|
||
pulse() {
|
||
if (this.TxClosed(0)) {
|
||
// If we were transmitting, pause
|
||
this.Tx(0, false)
|
||
} else if (this.keyPressed[0]) {
|
||
// If the key was pressed, transmit
|
||
this.Tx(0, true)
|
||
} else {
|
||
// If the key wasn't pressed, stop pulsing
|
||
this.pulseTimer = null
|
||
return
|
||
}
|
||
this.pulseTimer = setTimeout(() => this.pulse(), this.ditDuration)
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Electronic Bug Keyer
|
||
*
|
||
* Repeats both dits and dahs, ensuring proper pauses.
|
||
*
|
||
* I think the original ElBug Keyers did not have two paddles, so I've taken the
|
||
* liberty of making it so that whatever you pressed last is what gets repeated,
|
||
* similar to a modern computer keyboard.
|
||
*/
|
||
class ElBugKeyer extends BugKeyer {
|
||
KeyNames() {
|
||
return ["Dit ", "Dah"]
|
||
}
|
||
|
||
Reset() {
|
||
super.Reset()
|
||
this.nextRepeat = -1 // What to send next, if we're repeating
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
this.keyPressed[key] = pressed
|
||
if (pressed) {
|
||
this.nextRepeat = key
|
||
} else {
|
||
this.nextRepeat = this.keyPressed.findIndex(Boolean)
|
||
}
|
||
this.beginPulsing()
|
||
}
|
||
|
||
/**
|
||
* Computes transmission duration for a given key.
|
||
*
|
||
* @param {number} key Key to calculate
|
||
* @returns {Duration} Duration of transmission
|
||
*/
|
||
keyDuration(key) {
|
||
switch (key) {
|
||
case 0:
|
||
return DIT * this.ditDuration
|
||
case 1:
|
||
return DAH * this.ditDuration
|
||
}
|
||
return 0
|
||
}
|
||
|
||
/**
|
||
* Calculates the key to auto-transmit next.
|
||
*
|
||
* If there is nothing to send, returns -1.
|
||
*
|
||
* @returns {number} Key to transmit
|
||
*/
|
||
nextTx() {
|
||
if (!this.keyPressed.some(Boolean)) {
|
||
return -1
|
||
}
|
||
return this.nextRepeat
|
||
}
|
||
|
||
pulse() {
|
||
let nextPulse = 0
|
||
|
||
if (this.TxClosed(0)) {
|
||
// Pause if we're currently transmitting
|
||
nextPulse = this.ditDuration
|
||
this.Tx(0, false)
|
||
} else {
|
||
let next = this.nextTx()
|
||
if (next >= 0) {
|
||
nextPulse = this.keyDuration(next)
|
||
this.Tx(0, true)
|
||
}
|
||
}
|
||
|
||
if (nextPulse) {
|
||
this.pulseTimer = setTimeout(() => this.pulse(), nextPulse)
|
||
} else {
|
||
this.pulseTimer = null
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Ultimatic Keyer.
|
||
*
|
||
* If you know what an Iambic keyer does, this works similarly, but doesn't go
|
||
* back and forth when both keys are held.
|
||
*/
|
||
class UltimaticKeyer extends ElBugKeyer {
|
||
Reset() {
|
||
super.Reset()
|
||
this.queue = new QSet()
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
if (pressed) {
|
||
this.queue.add(key)
|
||
}
|
||
super.Key(key, pressed)
|
||
}
|
||
|
||
nextTx() {
|
||
let key = this.queue.shift()
|
||
if (key != null) {
|
||
return key
|
||
}
|
||
return super.nextTx()
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Single dot memory keyer.
|
||
*
|
||
* If you tap dit while a dah is sending, it queues up a dit to send, but
|
||
* reverts back to dah until the dah key is released or the dit key is pressed
|
||
* again. In other words, if the dah is held, it only pay attention to the edge
|
||
* on dit.
|
||
*/
|
||
class SingleDotKeyer extends ElBugKeyer {
|
||
Reset() {
|
||
super.Reset()
|
||
this.queue = new QSet()
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
if (pressed && (key == 0)) {
|
||
this.queue.add(key)
|
||
}
|
||
super.Key(key, pressed)
|
||
}
|
||
|
||
nextTx() {
|
||
let key = this.queue.shift()
|
||
if (key != null) {
|
||
return key
|
||
}
|
||
for (let key of [1, 0]) {
|
||
if (this.keyPressed[key]) {
|
||
return key
|
||
}
|
||
}
|
||
return -1
|
||
}
|
||
}
|
||
|
||
/**
|
||
* "Plain" Iambic keyer.
|
||
*/
|
||
class IambicKeyer extends ElBugKeyer {
|
||
nextTx() {
|
||
let next = super.nextTx()
|
||
if (this.keyPressed.every(Boolean)) {
|
||
this.nextRepeat = 1 - this.nextRepeat
|
||
}
|
||
return next
|
||
}
|
||
}
|
||
|
||
class IambicAKeyer extends IambicKeyer {
|
||
Reset() {
|
||
super.Reset()
|
||
this.queue = new QSet()
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
if (pressed && (key == 0)) {
|
||
this.queue.add(key)
|
||
}
|
||
super.Key(key, pressed)
|
||
}
|
||
|
||
nextTx() {
|
||
let next = super.nextTx()
|
||
let key = this.queue.shift()
|
||
if (key != null) {
|
||
return key
|
||
}
|
||
return next
|
||
}
|
||
}
|
||
|
||
/**
|
||
* "Iambic B"
|
||
*
|
||
* I have gotten a lot of helpful feedback on this one!
|
||
*
|
||
* Quoting DJ5IL:
|
||
*
|
||
* > if anytime during generation of an element the
|
||
* > opposite lever was pressed, generate one extra
|
||
* > alternate element.
|
||
*/
|
||
class IambicBKeyer extends IambicKeyer {
|
||
Reset() {
|
||
super.Reset()
|
||
this.queue = new QSet()
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
if (pressed && (this.sending != key)) {
|
||
this.queue.add(key)
|
||
}
|
||
super.Key(key, pressed)
|
||
}
|
||
|
||
nextTx() {
|
||
for (let key of [0,1]) {
|
||
if (this.keyPressed[key]) {
|
||
this.queue.add(key)
|
||
}
|
||
}
|
||
let next = this.queue.shift()
|
||
this.sending = next
|
||
if (next == null) {
|
||
return -1
|
||
}
|
||
return next
|
||
}
|
||
}
|
||
|
||
class KeyaheadKeyer extends ElBugKeyer {
|
||
Reset() {
|
||
super.Reset()
|
||
this.queue = []
|
||
}
|
||
|
||
Key(key, pressed) {
|
||
if (pressed) {
|
||
this.queue.push(key)
|
||
}
|
||
super.Key(key, pressed)
|
||
}
|
||
|
||
nextTx() {
|
||
let next = this.queue.shift()
|
||
if (next != null) {
|
||
return next
|
||
}
|
||
return super.nextTx()
|
||
}
|
||
}
|
||
|
||
|
||
/**
|
||
* A dictionary of all available keyers
|
||
*/
|
||
const Keyers = {
|
||
straight: StraightKeyer,
|
||
cootie: CootieKeyer,
|
||
bug: BugKeyer,
|
||
elbug: ElBugKeyer,
|
||
singledot: SingleDotKeyer,
|
||
ultimatic: UltimaticKeyer,
|
||
iambic: IambicKeyer,
|
||
iambica: IambicAKeyer,
|
||
iambicb: IambicBKeyer,
|
||
keyahead: KeyaheadKeyer,
|
||
|
||
robo: RoboKeyer.Keyer,
|
||
}
|
||
|
||
const Numbers = {
|
||
straight: 1,
|
||
cootie: 1,
|
||
bug: 2,
|
||
elbug: 3,
|
||
singledot: 4,
|
||
ultimatic: 5,
|
||
iambic: 6,
|
||
iambica: 7,
|
||
iambicb: 8,
|
||
keyahead: 9,
|
||
}
|
||
|
||
export {
|
||
Keyers, Numbers,
|
||
}
|