/
EditVideoViewController.swift
568 lines (466 loc) · 16.7 KB
/
EditVideoViewController.swift
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568
import Cocoa
import AVKit
import Defaults
import FirebaseCrashlytics
final class EditVideoViewController: NSViewController {
enum PredefinedSizeItem {
case custom
case spacer
case dimensions(ResizableDimensions)
var resizableDimensions: ResizableDimensions? {
switch self {
case .dimensions(let resizableDimensions):
return resizableDimensions
default:
return nil
}
}
}
@IBOutlet private var estimatedSizeLabel: NSTextField!
@IBOutlet private var frameRateSlider: NSSlider!
@IBOutlet private var frameRateLabel: NSTextField!
@IBOutlet private var qualitySlider: NSSlider!
@IBOutlet private var loopCheckbox: NSButton!
@IBOutlet private var widthTextField: IntTextField!
@IBOutlet private var heightTextField: IntTextField!
@IBOutlet private var predefinedSizesDropdown: MenuPopUpButton!
@IBOutlet private var dimensionsTypeDropdown: MenuPopUpButton!
@IBOutlet private var cancelButton: NSButton!
@IBOutlet private var playerViewWrapper: NSView!
@IBOutlet private var loopCountTextField: IntTextField!
@IBOutlet private var loopCountStepper: NSStepper!
var inputUrl: URL!
var asset: AVAsset!
var videoMetadata: AVAsset.VideoMetadata!
private var resizableDimensions: ResizableDimensions!
private var predefinedSizes: [PredefinedSizeItem]!
private let formatter = ByteCountFormatter()
private var playerViewController: TrimmingAVPlayerViewController!
private var timeRange: ClosedRange<Double>? { playerViewController?.timeRange }
private let tooltip = Tooltip(
identifier: "savePanelArrowKeys",
text: "Press the arrow up/down keys to change the value by 1. Hold the Option key meanwhile to change it by 10.",
showOnlyOnce: true,
maxWidth: 300
)
private var loopCount: Int {
/*
Looping values are:
-1 | No loops
0 | Loop forever
>=1 | Loop n times
*/
guard Defaults[.loopGif] else {
return Int(loopCountTextField.intValue) == 0 ? -1 : Int(loopCountTextField.intValue)
}
return 0
}
private var conversionSettings: Gifski.Conversion {
.init(
video: inputUrl,
timeRange: timeRange,
quality: Defaults[.outputQuality],
dimensions: resizableDimensions.changed(dimensionsType: .pixels).currentDimensions.value,
frameRate: frameRateSlider.integerValue,
loopCount: loopCount
)
}
convenience init(
inputUrl: URL,
asset: AVAsset,
videoMetadata: AVAsset.VideoMetadata
) {
self.init()
self.inputUrl = inputUrl
self.asset = asset
self.videoMetadata = videoMetadata
AppDelegate.shared.previousEditViewController = self
}
var isConverting = false
@IBAction
private func convert(_ sender: Any) {
isConverting = true
cancelFileSizeEstimation()
let convert = ConversionViewController(conversion: conversionSettings)
push(viewController: convert)
}
@IBAction
private func cancel(_ sender: Any) {
let videoDropController = VideoDropViewController()
push(viewController: videoDropController)
AppDelegate.shared.previousEditViewController = nil
}
override func viewDidLoad() {
super.viewDidLoad()
formatter.zeroPadsFractionDigits = true
estimatedSizeLabel.font = .monospacedDigitSystemFont(ofSize: 0, weight: .regular)
setUpDimensions()
setUpDropdowns()
setUpSliders()
setUpWidthAndHeightTextFields()
setUpLoopCountControls()
setUpDropView()
setUpTrimmingView()
}
override func viewDidAppear() {
super.viewDidAppear()
view.window?.makeFirstResponder(playerViewController.playerView)
setUpTabOrder()
tooltip.show(from: widthTextField, preferredEdge: .maxX)
}
private func setUpDimensions() {
let minimumScale: CGFloat = 0.01
let maximumScale: CGFloat = 1
let dimensions = Dimensions(type: .pixels, value: videoMetadata.dimensions)
resizableDimensions = ResizableDimensions(
dimensions: dimensions,
minimumScale: minimumScale,
maximumScale: maximumScale
)
var pixelCommonSizes: [CGFloat] = [
960,
800,
640,
500,
480,
320,
256,
200,
160,
128,
80,
64
]
if !pixelCommonSizes.contains(dimensions.value.width) {
pixelCommonSizes.append(dimensions.value.width)
pixelCommonSizes.sort(by: >)
}
let pixelDimensions = pixelCommonSizes.map { width -> CGSize in
let ratio = width / dimensions.value.width
let height = dimensions.value.height * ratio
return CGSize(width: width, height: height)
}
let predefinedPixelDimensions = pixelDimensions
.filter { resizableDimensions.validate(newSize: $0) }
.map { resizableDimensions.resized(to: $0) }
let percentCommonSizes: [CGFloat] = [
50,
33,
25,
20
]
let predefinedPercentDimensions = percentCommonSizes
.map {
resizableDimensions.changed(dimensionsType: .percent)
.resized(to: CGSize(width: $0, height: $0))
}
predefinedSizes = [.custom]
predefinedSizes.append(.spacer)
predefinedSizes.append(contentsOf: predefinedPixelDimensions.map { .dimensions($0) })
predefinedSizes.append(.spacer)
predefinedSizes.append(contentsOf: predefinedPercentDimensions.map { .dimensions($0) })
}
private func setUpDropdowns() {
predefinedSizesDropdown.removeAllItems()
for size in predefinedSizes {
switch size {
case .custom:
predefinedSizesDropdown.addItem(withTitle: "Custom")
case .spacer:
predefinedSizesDropdown.menu?.addItem(NSMenuItem.separator())
case .dimensions(let dimensions):
predefinedSizesDropdown.addItem(withTitle: "\(dimensions)")
}
}
predefinedSizesDropdown.onMenuWillOpen = { [weak self] in
self?.predefinedSizesDropdown.item(at: 0)?.title = "Custom"
}
predefinedSizesDropdown.onMenuDidClose = { [weak self] selectedIndex in
guard let self = self else {
return
}
let oldOrNewSelectedIndex = selectedIndex ?? self.predefinedSizesDropdown.indexOfSelectedItem
if let size = self.predefinedSizes?[safe: oldOrNewSelectedIndex], case .custom = size {
// We don't care if it's newly selected index or not, if it's custom, set its size
self.updateSelectedItemAsCustomWithSize()
} else if let index = selectedIndex, let size = self.predefinedSizes?[safe: index],
case .dimensions(let dimensions) = size {
// But we care if it's newly selected index for dimensions, we don't want to recalculate
// if we don't have to
self.resizableDimensions.change(dimensionsType: dimensions.currentDimensions.type)
self.resizableDimensions.resize(to: dimensions.currentDimensions.value)
self.dimensionsUpdated()
}
}
dimensionsTypeDropdown.removeAllItems()
dimensionsTypeDropdown.addItems(withTitles: DimensionsType.allCases.map(\.rawValue))
dimensionsTypeDropdown.onMenuDidClose = { [weak self] selectedIndex in
guard
let self = self,
let index = selectedIndex,
let item = self.dimensionsTypeDropdown.item(at: index),
let dimensionsType = DimensionsType(rawValue: item.title)
else {
return
}
self.resizableDimensions.change(dimensionsType: dimensionsType)
self.dimensionsUpdated()
self.updateTextFieldsMinMax()
}
if resizableDimensions.currentDimensions.value.width > 640 {
predefinedSizesDropdown.selectItem(at: 3)
} else {
predefinedSizesDropdown.selectItem(at: 2)
}
dimensionsUpdated()
}
private func setUpSliders() {
frameRateSlider.onAction = { [weak self] _ in
guard let self = self else {
return
}
let frameRate = self.frameRateSlider.integerValue
self.frameRateLabel.stringValue = "\(frameRate)"
self.estimateFileSize()
}
qualitySlider.onAction = { [weak self] _ in
guard let self = self else {
return
}
Defaults[.outputQuality] = self.qualitySlider.doubleValue
self.estimateFileSize()
}
// We round it so that `29.970` becomes `30` for practical reasons.
let frameRate = videoMetadata.frameRate.rounded()
if frameRate > 50 {
showFpsWarningIfNeeded()
}
frameRateSlider.maxValue = frameRate.clamped(to: Constants.allowedFrameRate)
frameRateSlider.doubleValue = defaultFrameRate(inputFrameRate: frameRate)
frameRateSlider.triggerAction()
qualitySlider.doubleValue = Defaults[.outputQuality]
qualitySlider.triggerAction()
}
private func showFpsWarningIfNeeded() {
SSApp.runOnce(identifier: "fpsWarning") {
DispatchQueue.main.async { [self] in
NSAlert.showModal(
for: view.window,
message: "Animated GIF Limitation",
informativeText: "Exporting GIFs with a frame rate higher than 50 is not supported as browsers will throttle and play them at 10 FPS.",
defaultButtonIndex: -1
)
}
}
}
private func showConversionCompletedAnimationWarningIfNeeded() {
// TODO: This function eventually will become an OS version check when Apple fixes their GIF animation implementation.
// So far `NSImageView` and Quick Look are affected and may be fixed in later OS versions. Depending on how Apple fixes the issue,
// the message may need future modifications. Safari works as expected, so it's not all of Apple's software.
// https://github.com/feedback-assistant/reports/issues/187
SSApp.runOnce(identifier: "gifLoopCountWarning") {
DispatchQueue.main.async { [self] in
NSAlert.showModal(
for: view.window,
message: "Animated GIF Preview Limitation",
informativeText: "Due to a bug in the macOS GIF handling, the after-conversion preview and Quick Look may not loop as expected. The GIF will loop correctly in web browsers and other image viewing apps.",
defaultButtonIndex: -1
)
}
}
}
private func setUpWidthAndHeightTextFields() {
widthTextField.onBlur = { [weak self] width in
self?.resizableDimensions.resize(usingWidth: CGFloat(width))
self?.dimensionsUpdated()
}
widthTextField.onValueChange = { [weak self] width in
guard let self = self else {
return
}
self.resizableDimensions.resize(usingWidth: CGFloat(width))
self.dimensionsUpdated()
}
heightTextField.onBlur = { [weak self] height in
self?.resizableDimensions.resize(usingHeight: CGFloat(height))
self?.dimensionsUpdated()
}
heightTextField.onValueChange = { [weak self] height in
guard let self = self else {
return
}
self.resizableDimensions.resize(usingHeight: CGFloat(height))
self.dimensionsUpdated()
}
updateTextFieldsMinMax()
}
private func setUpLoopCountControls() {
loopCountTextField.onBlur = { [weak self] loopCount in
guard let self = self else {
return
}
self.loopCountTextField.stringValue = "\(loopCount)"
self.loopCountStepper.intValue = Int32(loopCount)
if loopCount > 0 {
self.loopCheckbox.state = .off
}
}
loopCountTextField.onValueChange = { [weak self] loopCount in
guard let self = self else {
return
}
let validLoopCount = loopCount.clamped(to: Constants.loopCountRange)
self.loopCountTextField.stringValue = "\(validLoopCount)"
self.loopCountStepper.intValue = Int32(validLoopCount)
if validLoopCount > 0 {
self.loopCheckbox.state = .off
}
}
loopCheckbox.onAction = { [weak self] _ in
guard let self = self else {
return
}
if self.loopCheckbox.state == .on {
self.loopCountTextField.stringValue = "0"
self.loopCountStepper.intValue = 0
} else {
self.showConversionCompletedAnimationWarningIfNeeded()
}
}
Defaults.observe(.loopGif) { [weak self] in
self?.loopCountTextField.isEnabled = $0.newValue == false
self?.loopCountStepper.isEnabled = $0.newValue == false
}
.tieToLifetime(of: self)
loopCountStepper.onAction = { [weak self] _ in
guard let self = self else {
return
}
self.loopCountTextField.stringValue = "\(self.loopCountStepper.intValue)"
}
}
private func setUpDropView() {
let videoDropController = VideoDropViewController(dropLabelIsHidden: true)
add(childController: videoDropController)
}
private func setUpTrimmingView() {
playerViewController = TrimmingAVPlayerViewController(playerItem: AVPlayerItem(asset: asset)) { [weak self] _ in
self?.estimateFileSize()
}
Defaults.observe(.loopGif) { [weak self] in
self?.playerViewController.loopPlayback = $0.newValue
}
.tieToLifetime(of: self)
add(childController: playerViewController, to: playerViewWrapper)
}
private func setUpTabOrder() {
if let button = view.window?.firstResponder as? NSButton {
button.nextKeyView = predefinedSizesDropdown
}
predefinedSizesDropdown.nextKeyView = widthTextField
widthTextField.nextKeyView = heightTextField
heightTextField.nextKeyView = dimensionsTypeDropdown
dimensionsTypeDropdown.nextKeyView = frameRateSlider
frameRateSlider.nextKeyView = qualitySlider
qualitySlider.nextKeyView = loopCountTextField
loopCountTextField.nextKeyView = loopCheckbox
loopCheckbox.nextKeyView = cancelButton
}
private func updateTextFieldsMinMax() {
let widthMinMax = resizableDimensions.widthMinMax
let heightMinMax = resizableDimensions.heightMinMax
widthTextField.minMax = Int(widthMinMax.lowerBound)...Int(widthMinMax.upperBound)
heightTextField.minMax = Int(heightMinMax.lowerBound)...Int(heightMinMax.upperBound)
loopCountTextField.minMax = Constants.loopCountRange
}
private func dimensionsUpdated() {
updateDimensionsDisplay()
estimateFileSize()
selectPredefinedSizeBasedOnCurrentDimensions()
}
private func setEstimatedFileSize(_ string: NSAttributedString) {
estimatedSizeLabel.attributedStringValue = "Estimated File Size: ".attributedString + string
}
private var gifski: Gifski?
private func getNaiveEstimate() -> String {
let duration: Double = {
guard let timeRange = timeRange else {
return videoMetadata.duration
}
return timeRange.upperBound - timeRange.lowerBound
}()
let frameCount = duration * frameRateSlider.doubleValue
let dimensions = resizableDimensions.changed(dimensionsType: .pixels).currentDimensions.value
var fileSize = (Double(dimensions.width) * Double(dimensions.height) * frameCount) / 3
fileSize = fileSize * (qualitySlider.doubleValue + 1.5) / 2.5
return formatter.string(fromByteCount: Int64(fileSize))
}
private func cancelFileSizeEstimation() {
// TODO: Deinit doesn't seem to be called.
gifski?.cancel()
gifski = nil
if estimatedSizeLabel.stringValue.contains("Calculating") {
setEstimatedFileSize(getNaiveEstimate().attributedString)
}
}
private func _estimateFileSize() {
self.gifski?.cancel()
self.gifski = nil
setEstimatedFileSize(getNaiveEstimate().attributedString)
guard !isConverting else {
return
}
let gifski = Gifski()
self.gifski = gifski
setEstimatedFileSize(getNaiveEstimate().attributedString + " Calculating Estimate…".attributedString.withColor(.secondaryLabelColor).withFontSize(NSFont.smallSystemFontSize.double))
gifski.run(conversionSettings, isEstimation: true) { [weak self] result in
guard let self = self else {
return
}
switch result {
case .success(let data):
// We add 10% extra because it's better to estimate slightly too much than too little.
let fileSize = (Double(data.count) * gifski.sizeMultiplierForEstimation) * 1.1
self.setEstimatedFileSize(self.formatter.string(fromByteCount: Int64(fileSize)).attributedString)
case .failure(let error):
switch error {
case .cancelled:
break
case .notEnoughFrames:
self.setEstimatedFileSize(self.getNaiveEstimate().attributedString)
default:
Crashlytics.recordNonFatalError(error: error)
self.setEstimatedFileSize("Error: \(error.localizedDescription)".truncating(to: 86).attributedString.withColor(.secondaryLabelColor).withFontSize(NSFont.smallSystemFontSize.double))
}
}
}
}
private func estimateFileSize() {
Debouncer.debounce(delay: 0.5, action: _estimateFileSize)
}
private func updateDimensionsDisplay() {
widthTextField.stringValue = String(format: "%.0f", resizableDimensions.currentDimensions.value.width)
heightTextField.stringValue = String(format: "%.0f", resizableDimensions.currentDimensions.value.height)
dimensionsTypeDropdown.selectItem(withTitle: resizableDimensions.currentDimensions.type.rawValue)
}
private func selectPredefinedSizeBasedOnCurrentDimensions() {
// First reset the state.
predefinedSizesDropdown.selectItem(at: NSNotFound)
// Check if we can select predefined option that has the same dimensions settings.
if let index = predefinedSizes.firstIndex(where: { $0.resizableDimensions?.currentDimensions == resizableDimensions.currentDimensions }) {
predefinedSizesDropdown.selectItem(at: index)
} else {
updateSelectedItemAsCustomWithSize()
}
}
private func updateSelectedItemAsCustomWithSize() {
let newType: DimensionsType = resizableDimensions.currentDimensions.type == .percent ? .pixels : .percent
let newResizableDimensions = resizableDimensions.changed(dimensionsType: newType)
let selectedCustomTitle = "Custom - \(newResizableDimensions.currentDimensions)"
predefinedSizesDropdown.item(at: 0)?.title = selectedCustomTitle
predefinedSizesDropdown.selectItem(at: 0)
}
private func defaultFrameRate(inputFrameRate frameRate: Double) -> Double {
frameRate.clamped(to: Constants.allowedFrameRate.lowerBound...20)
}
}