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popup.js
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popup.js
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'use strict'
let tid = 0
const frameMap = new Map()
const elementsList = document.getElementById('elements-list')
const allElements = document.getElementById('all-elements')
const indivElements = document.getElementById('individual-elements')
const elementsTpl = document.getElementById('elements-tpl')
function applySettings (fid, elid, newSettings) {
return browser.tabs.executeScript(tid, { frameId: fid, code: `(function () {
const el = document.querySelector('[data-x-soundfixer-id="${elid}"]')
if (!el.xSoundFixerContext) {
el.xSoundFixerContext = new AudioContext()
el.xSoundFixerGain = el.xSoundFixerContext.createGain()
el.xSoundFixerPan = el.xSoundFixerContext.createStereoPanner()
el.xSoundFixerSplit = el.xSoundFixerContext.createChannelSplitter(2)
el.xSoundFixerMerge = el.xSoundFixerContext.createChannelMerger(2)
el.xSoundFixerSource = el.xSoundFixerContext.createMediaElementSource(el)
el.xSoundFixerSource.connect(el.xSoundFixerGain)
el.xSoundFixerGain.connect(el.xSoundFixerPan)
el.xSoundFixerPan.connect(el.xSoundFixerContext.destination)
el.xSoundFixerOriginalChannels = el.xSoundFixerContext.destination.channelCount
}
const newSettings = ${JSON.stringify(newSettings)}
if ('gain' in newSettings) {
el.xSoundFixerGain.gain.value = newSettings.gain
}
if ('pan' in newSettings) {
el.xSoundFixerPan.pan.value = newSettings.pan
}
if ('mono' in newSettings) {
el.xSoundFixerContext.destination.channelCount = newSettings.mono ? 1 : el.xSoundFixerOriginalChannels
}
if ('flip' in newSettings) {
el.xSoundFixerFlipped = newSettings.flip
el.xSoundFixerMerge.disconnect()
el.xSoundFixerPan.disconnect()
if (el.xSoundFixerFlipped) {
el.xSoundFixerPan.connect(el.xSoundFixerSplit)
el.xSoundFixerSplit.connect(el.xSoundFixerMerge, 0, 1)
el.xSoundFixerSplit.connect(el.xSoundFixerMerge, 1, 0)
el.xSoundFixerMerge.connect(el.xSoundFixerContext.destination)
} else {
el.xSoundFixerPan.connect(el.xSoundFixerContext.destination)
}
}
el.xSoundFixerSettings = {
gain: el.xSoundFixerGain.gain.value,
pan: el.xSoundFixerPan.pan.value,
mono: el.xSoundFixerContext.destination.channelCount == 1,
flip: el.xSoundFixerFlipped,
}
})()` })
}
browser.tabs.query({ currentWindow: true, active: true }).then(tabs => {
tid = tabs[0].id
return browser.webNavigation.getAllFrames({ tabId: tid }).then(frames =>
Promise.all(frames.map(frame => {
const fid = frame.frameId
return browser.tabs.executeScript(tid, { frameId: fid, code: `(function () {
const result = new Map()
for (const el of document.querySelectorAll('video, audio')) {
if (!el.hasAttribute('data-x-soundfixer-id')) {
el.setAttribute('data-x-soundfixer-id',
Math.random().toString(36).substr(2, 10))
}
result.set(el.getAttribute('data-x-soundfixer-id'), {
type: el.tagName.toLowerCase(),
isPlaying: (el.currentTime > 0 && !el.paused && !el.ended && el.readyState > 2),
settings: el.xSoundFixerSettings
})
}
return result
})()` }).then(result => frameMap.set(fid, result[0]))
.catch(err => console.error(`tab ${tid} frame ${fid}`, err))
}))
)
}).then(_ => {
elementsList.textContent = ''
let elCount = 0
for (const [fid, els] of frameMap) {
for (const [elid, el] of els) {
const settings = el.settings || {}
const node = document.createElement('li')
node.appendChild(document.importNode(elementsTpl.content, true))
node.dataset.fid = fid
node.dataset.elid = elid
node.querySelector('.element-label').textContent = `
${el.type.charAt(0).toUpperCase() + el.type.slice(1)}
${elCount + 1}
${fid ? `in frame ${fid}` : ''}
${el.isPlaying ? '' : '(not playing)'}
`
if (!el.isPlaying)
node.querySelector('.element-label').classList.add('element-not-playing')
const gain = node.querySelector('.element-gain')
const gainNumberInput = node.querySelector('.element-gain-num')
gain.value = settings.gain || 1
gain.parentElement.querySelector('.element-gain-num').value = '' + gain.value
gain.addEventListener('input', function () {
// We used a function expression thus gain === this
applySettings(fid, elid, { gain: this.value })
this.parentElement.querySelector('.element-gain-num').value = '' + this.value
})
gainNumberInput.addEventListener('input', function () {
if (+this.value > +this.getAttribute('max'))
this.value = this.getAttribute('max')
if (+this.value < +this.getAttribute('min'))
this.value = this.getAttribute('min')
applySettings(fid, elid, { gain: this.value })
this.parentElement.querySelector('.element-gain').value = '' + this.value
})
const pan = node.querySelector('.element-pan')
const panNumberInput = node.querySelector('.element-pan-num')
pan.value = settings.pan || 0
pan.parentElement.querySelector('.element-pan-num').value = '' + pan.value
pan.addEventListener('input', function () {
applySettings(fid, elid, { pan: this.value })
this.parentElement.querySelector('.element-pan-num').value = '' + this.value
})
panNumberInput.addEventListener('input', function () {
if (+this.value > +this.getAttribute('max'))
this.value = this.getAttribute('max')
if (+this.value < +this.getAttribute('min'))
this.value = this.getAttribute('min')
applySettings(fid, elid, { pan: this.value })
this.parentElement.querySelector('.element-pan').value = '' + this.value
})
const mono = node.querySelector('.element-mono')
mono.checked = settings.mono || false
mono.addEventListener('change', _ => {
applySettings(fid, elid, { mono: mono.checked })
})
const flip = node.querySelector('.element-flip')
flip.checked = settings.flip || false
flip.addEventListener('change', _ => {
applySettings(fid, elid, { flip: flip.checked })
})
node.querySelector('.element-reset').onclick = function () {
gain.value = 1
gain.parentElement.querySelector('.element-gain-num').value = '' + gain.value
pan.value = 0
pan.parentElement.querySelector('.element-pan-num').value = '' + pan.value
mono.checked = false
flip.checked = false
applySettings(fid, elid, { gain: 1, pan: 0, mono: false, flip: false })
}
elementsList.appendChild(node)
elCount += 1
}
}
if (elCount == 0) {
allElements.innerHTML = 'No audio/video found in the current tab. Note that some websites do not work because of cross-domain security restrictions.'
indivElements.remove()
} else {
const node = document.createElement('div')
node.appendChild(document.importNode(elementsTpl.content, true))
node.querySelector('.element-label').textContent = `All media on the page`
const gain = node.querySelector('.element-gain')
const gainNumberInput = node.querySelector('.element-gain-num')
gain.value = 1
gainNumberInput.value = '' + gain.value
function applyGain (value) {
for (const [fid, els] of frameMap) {
for (const [elid, el] of els) {
applySettings(fid, elid, { gain: value })
const egain = document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-gain`)
egain.value = value
egain.parentElement.querySelector('.element-gain-num').value = '' + value
}
}
gain.value = value
gainNumberInput.value = '' + value
}
gain.addEventListener('input', _ => applyGain(gain.value))
gainNumberInput.addEventListener('input', function () {
if (+this.value > +this.getAttribute('max'))
this.value = this.getAttribute('max')
if (+this.value < +this.getAttribute('min'))
this.value = this.getAttribute('min')
applyGain(+this.value)
})
const pan = node.querySelector('.element-pan')
const panNumberInput = node.querySelector('.element-pan-num')
pan.value = 0
panNumberInput.value = '' + pan.value
function applyPan (value) {
for (const [fid, els] of frameMap) {
for (const [elid, el] of els) {
applySettings(fid, elid, { pan: value })
const epan = document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-pan`)
epan.value = value
epan.parentElement.querySelector('.element-pan-num').value = '' + value
}
}
pan.value = value
panNumberInput.value = '' + value
}
pan.addEventListener('input', _ => applyPan(pan.value))
panNumberInput.addEventListener('input', function () {
if (+this.value > +this.getAttribute('max'))
this.value = this.getAttribute('max')
if (+this.value < +this.getAttribute('min'))
this.value = this.getAttribute('min')
applyPan(+this.value)
})
const mono = node.querySelector('.element-mono')
mono.checked = false
mono.addEventListener('change', _ => {
for (const [fid, els] of frameMap) {
for (const [elid, el] of els) {
applySettings(fid, elid, { mono: mono.checked })
const emono = document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-mono`)
emono.checked = mono.checked
}
}
})
const flip = node.querySelector('.element-flip')
flip.checked = false
flip.addEventListener('change', _ => {
for (const [fid, els] of frameMap) {
for (const [elid, el] of els) {
applySettings(fid, elid, { flip: flip.checked })
const eflip = document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-flip`)
eflip.checked = flip.checked
}
}
})
node.querySelector('.element-reset').onclick = function () {
gain.value = 1
gain.parentElement.querySelector('.element-gain-num').value = '' + gain.value
pan.value = 0
pan.parentElement.querySelector('.element-pan-num').value = '' + pan.value
mono.checked = false
flip.checked = false
for (const [fid, els] of frameMap) {
for (const [elid, el] of els) {
const egain = document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-gain`)
egain.value = 1
egain.parentElement.querySelector('.element-gain-num').value = '' + egain.value
const epan = document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-pan`)
epan.value = 0
epan.parentElement.querySelector('.element-pan-num').value = '' + epan.value
document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-mono`).checked = false
document.querySelector(`[data-fid="${fid}"][data-elid="${elid}"] .element-flip`).checked = false
applySettings(fid, elid, { gain: 1, pan: 0, mono: false, flip: false })
}
}
}
allElements.appendChild(node)
}
})