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Show noise and DMC channel
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@tyfkda
tyfkda committed Apr 28, 2024
1 parent 11c459d commit 2d07b7b
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Showing 3 changed files with 109 additions and 61 deletions.
170 changes: 109 additions & 61 deletions src/app/other_wnd.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ import {WindowManager} from '../wnd/window_manager'
import {Wnd} from '../wnd/wnd'

import {AudioManager} from '../util/audio_manager'
import {WaveType} from '../nes/apu'
import {WaveType, INoiseChannel} from '../nes/apu'
import {DomUtil} from '../util/dom_util'
import {GlobalSetting} from './global_setting'
import {Nes} from '../nes/nes'
Expand All @@ -21,6 +21,8 @@ import aboutHtmlContent from '../res/about.html'

import pluseImg from '../res/pulse.png'
import triangleImg from '../res/triangle.png'
import noiseImg from '../res/noise.png'
import dmcImg from '../res/dmc.png'
import sawtoothImg from '../res/sawtooth.png'

export class FpsWnd extends Wnd {
Expand Down Expand Up @@ -402,8 +404,8 @@ const kToneTable: number[] = [0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12] // F F# G
const kWaveTypeImages: string[] = [
pluseImg,
triangleImg,
'',
'',
noiseImg,
dmcImg,
sawtoothImg,
]

Expand All @@ -422,6 +424,7 @@ export class AudioWnd extends Wnd {
private nes: Nes
private stream: AppEvent.Stream
private subscription: Pubsub.Subscription
private waveTypes: Array<WaveType>
private channelIndices: Array<number>
private dots: Array<HTMLElement>
private keys: Array<Array<HTMLElement>>
Expand All @@ -430,12 +433,13 @@ export class AudioWnd extends Wnd {
public constructor(wndMgr: WindowManager, nes: Nes, stream: AppEvent.Stream) {
const waveTypes = nes.getChannelWaveTypes()
const channelIndices = [...Array(waveTypes.length).keys()]
.filter(ch => waveTypes[ch] !== WaveType.DMC && waveTypes[ch] !== WaveType.NOISE)
const channelCount = channelIndices.length

super(wndMgr, AudioWnd.W * AudioWnd.OCTAVE * 7, AudioWnd.H * channelCount, 'Audio')
// Assumed noise and DMC channels exist and they are half height.
super(wndMgr, AudioWnd.W * AudioWnd.OCTAVE * 7, AudioWnd.H * (channelCount - 1), 'Audio')
this.nes = nes
this.stream = stream
this.waveTypes = waveTypes
this.channelIndices = channelIndices

const {root, dots, keys} = this.createDom(channelCount, waveTypes)
Expand Down Expand Up @@ -474,15 +478,66 @@ export class AudioWnd extends Wnd {
const DOT_W = 12
for (let ich = 0; ich < this.channelIndices.length; ++ich) {
const channel = this.nes.getSoundChannel(this.channelIndices[ich])
const waveType = this.waveTypes[ich]
let x = 0
let y = 0
let vol = 0

switch (waveType) {
case WaveType.NOISE:
{
vol = channel.isEnabled() ? channel.getVolume() : 0
const [period, _mode] = (channel as unknown as INoiseChannel).getNoisePeriod()
const APU_NOISE_HZ = 894887
const freq = (APU_NOISE_HZ / 32) / (period + 1) // ???
const toneIndex = Math.log(freq) * logScale - AudioWnd.kBaseTone + 0.5
if ((toneIndex >= 0 && toneIndex <= AudioWnd.OCTAVE * ALL_NOTE) && vol > 0) {
const offset = kToneTable[(toneIndex | 0) % ALL_NOTE] | 0
x = Math.round(((offset * 0.5) + (Math.floor(toneIndex / ALL_NOTE) | 0) * WHITE_NOTE + (toneIndex % 1)) * xScale) | 0
y = AudioWnd.H * 0.25
} else {
vol = 0
}
}
break
case WaveType.DMC:
{
vol = channel.isEnabled() ? channel.getVolume() : 0
x = (AudioWnd.W * AudioWnd.OCTAVE * 7) * 0.5;
y = AudioWnd.H * 0.25
}
break
default:
{
vol = channel.isEnabled() ? channel.getVolume() : 0
const freq = channel.getFrequency()
const toneIndex = Math.log(freq) * logScale - AudioWnd.kBaseTone + 0.5
let keyIndex = -1
if ((toneIndex >= 0 && toneIndex <= AudioWnd.OCTAVE * ALL_NOTE) && vol > 0) {
const offset = kToneTable[(toneIndex | 0) % ALL_NOTE] | 0
x = Math.round(((offset * 0.5) + (Math.floor(toneIndex / ALL_NOTE) | 0) * WHITE_NOTE + (toneIndex % 1)) * xScale) | 0
y = (offset & 1) === 0 ? yWhite : yBlack
keyIndex = Math.floor(toneIndex) | 0
}

const lastKeyIndex = this.lastKeyIndices[ich]
if (keyIndex !== lastKeyIndex) {
if (lastKeyIndex >= 0) {
const key = this.keys[ich][lastKeyIndex]
key.style.removeProperty('background-color')
}
if (keyIndex >= 0) {
const key = this.keys[ich][keyIndex]
key.style.setProperty('background-color', KEY_FLASH_COLOR)
}
this.lastKeyIndices[ich] = keyIndex
}
}
break
}

const dot = this.dots[ich]
const vol = channel.isEnabled() ? channel.getVolume() : 0
const freq = channel.getFrequency()
const toneIndex = Math.log(freq) * logScale - AudioWnd.kBaseTone + 0.5
let keyIndex = -1
if ((toneIndex >= 0 && toneIndex <= AudioWnd.OCTAVE * ALL_NOTE) && vol > 0) {
const offset = kToneTable[(toneIndex | 0) % ALL_NOTE] | 0
const x = Math.round(((offset * 0.5) + (Math.floor(toneIndex / ALL_NOTE) | 0) * WHITE_NOTE + (toneIndex % 1)) * xScale) | 0
const y = (offset & 1) === 0 ? yWhite : yBlack
if (vol > 0) {
const v = Math.pow(vol, 1 / 3)
const w = Math.round(DOT_W * v) | 0
const r = (w * 0.5) | 0
Expand All @@ -494,26 +549,11 @@ export class AudioWnd extends Wnd {
height: `${w}px`,
borderRadius: `${w}px`,
})

keyIndex = Math.floor(toneIndex) | 0
} else {
DomUtil.setStyles(dot, {
visibility: 'hidden',
})
}

const lastKeyIndex = this.lastKeyIndices[ich]
if (keyIndex !== lastKeyIndex) {
if (lastKeyIndex >= 0) {
const key = this.keys[ich][lastKeyIndex]
key.style.removeProperty('background-color')
}
if (keyIndex >= 0) {
const key = this.keys[ich][keyIndex]
key.style.setProperty('background-color', KEY_FLASH_COLOR)
}
this.lastKeyIndices[ich] = keyIndex
}
}
}

Expand All @@ -536,54 +576,62 @@ export class AudioWnd extends Wnd {

for (let ch = 0; ch < channelCount; ++ch) {
const line = document.createElement('div')
const waveType = waveTypes[this.channelIndices[ch]]
const percussion = waveType === WaveType.NOISE || waveType === WaveType.DMC
const h = percussion ? H / 2 : H
line.className = 'keyboard'
DomUtil.setStyles(line, {
height: `${H - 1}px`,
height: `${h - 1}px`,
})

const whiteKeys = new Array<HTMLElement>()
const blackKeys = new Array<HTMLElement>()
const chKeys = new Array<HTMLElement>()
for (let octave = 0; octave < AudioWnd.OCTAVE; ++octave) {
for (let i = 0; i < kToneTable.length; ++i) {
const offset = kToneTable[i] | 0
const note = octave * WHITE_NOTE + (offset >> 1)
let key: HTMLElement
if ((offset & 1) === 0) {
key = document.createElement('div')
key.className = 'white-key'
DomUtil.setStyles(key, {
left: `${note * W}px`,
width: `${W - 1}px`,
})
whiteKeys.push(key)
} else {
key = document.createElement('div')
key.className = 'black-key'
DomUtil.setStyles(key, {
left: `${note * W + W / 2 + 1}px`,
width: `${W - 2}px`,
height: `${H / 2}px`,
})
blackKeys.push(key)
let whiteKeys: Array<HTMLElement>
let blackKeys: Array<HTMLElement>
let chKeys: Array<HTMLElement> = []
if (!percussion) {
whiteKeys = new Array<HTMLElement>()
blackKeys = new Array<HTMLElement>()
chKeys = new Array<HTMLElement>()
for (let octave = 0; octave < AudioWnd.OCTAVE; ++octave) {
for (let i = 0; i < kToneTable.length; ++i) {
const offset = kToneTable[i] | 0
const note = octave * WHITE_NOTE + (offset >> 1)
let key: HTMLElement
if ((offset & 1) === 0) {
key = document.createElement('div')
key.className = 'white-key'
DomUtil.setStyles(key, {
left: `${note * W}px`,
width: `${W - 1}px`,
})
whiteKeys.push(key)
} else {
key = document.createElement('div')
key.className = 'black-key'
DomUtil.setStyles(key, {
left: `${note * W + W / 2 + 1}px`,
width: `${W - 2}px`,
height: `${H / 2}px`,
})
blackKeys.push(key)
}
chKeys.push(key)
}
chKeys.push(key)
}
}

for (const whiteKey of whiteKeys)
line.appendChild(whiteKey)
for (const blackKey of blackKeys)
line.appendChild(blackKey)
for (const whiteKey of whiteKeys)
line.appendChild(whiteKey)
for (const blackKey of blackKeys)
line.appendChild(blackKey)
}

const icon = document.createElement('img')
icon.className = 'pixelated'
DomUtil.setStyles(icon, {
position: 'absolute',
left: 0,
top: 0,
display: 'block',
})
const waveType = waveTypes[this.channelIndices[ch]]
icon.src = kWaveTypeImages[waveType]
line.appendChild(icon)

Expand Down
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