Swiftgram/submodules/TelegramCallsUI/Sources/Components/MediaStreamVideoComponent.swift
2022-03-08 23:39:54 +04:00

324 lines
16 KiB
Swift

import Foundation
import UIKit
import ComponentFlow
import ActivityIndicatorComponent
import AccountContext
import AVKit
import MultilineTextComponent
import Display
final class MediaStreamVideoComponent: Component {
let call: PresentationGroupCallImpl
let hasVideo: Bool
let isVisible: Bool
let isAdmin: Bool
let peerTitle: String
let activatePictureInPicture: ActionSlot<Action<Void>>
let bringBackControllerForPictureInPictureDeactivation: (@escaping () -> Void) -> Void
init(call: PresentationGroupCallImpl, hasVideo: Bool, isVisible: Bool, isAdmin: Bool, peerTitle: String, activatePictureInPicture: ActionSlot<Action<Void>>, bringBackControllerForPictureInPictureDeactivation: @escaping (@escaping () -> Void) -> Void) {
self.call = call
self.hasVideo = hasVideo
self.isVisible = isVisible
self.isAdmin = isAdmin
self.peerTitle = peerTitle
self.activatePictureInPicture = activatePictureInPicture
self.bringBackControllerForPictureInPictureDeactivation = bringBackControllerForPictureInPictureDeactivation
}
public static func ==(lhs: MediaStreamVideoComponent, rhs: MediaStreamVideoComponent) -> Bool {
if lhs.call !== rhs.call {
return false
}
if lhs.hasVideo != rhs.hasVideo {
return false
}
if lhs.isVisible != rhs.isVisible {
return false
}
if lhs.isAdmin != rhs.isAdmin {
return false
}
if lhs.peerTitle != rhs.peerTitle {
return false
}
return true
}
public final class State: ComponentState {
override init() {
super.init()
}
}
public func makeState() -> State {
return State()
}
public final class View: UIScrollView, AVPictureInPictureControllerDelegate, ComponentTaggedView {
public final class Tag {
}
private let videoRenderingContext = VideoRenderingContext()
private let blurTintView: UIView
private var videoBlurView: VideoRenderingView?
private var videoView: VideoRenderingView?
private var activityIndicatorView: ComponentHostView<Empty>?
private var noSignalView: ComponentHostView<Empty>?
private var pictureInPictureController: AVPictureInPictureController?
private var component: MediaStreamVideoComponent?
private var hadVideo: Bool = false
private var noSignalTimer: Timer?
private var noSignalTimeout: Bool = false
private weak var state: State?
override init(frame: CGRect) {
self.blurTintView = UIView()
self.blurTintView.backgroundColor = UIColor(white: 0.0, alpha: 0.55)
super.init(frame: frame)
self.isUserInteractionEnabled = false
self.clipsToBounds = true
self.addSubview(self.blurTintView)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
public func matches(tag: Any) -> Bool {
if let _ = tag as? Tag {
return true
}
return false
}
func expandFromPictureInPicture() {
self.pictureInPictureController?.stopPictureInPicture()
}
func update(component: MediaStreamVideoComponent, availableSize: CGSize, state: State, transition: Transition) -> CGSize {
self.state = state
if component.hasVideo, self.videoView == nil {
if let input = component.call.video(endpointId: "unified") {
if let videoBlurView = self.videoRenderingContext.makeView(input: input, blur: true) {
self.videoBlurView = videoBlurView
self.insertSubview(videoBlurView, belowSubview: self.blurTintView)
}
if let videoView = self.videoRenderingContext.makeView(input: input, blur: false, forceSampleBufferDisplayLayer: true) {
self.videoView = videoView
self.addSubview(videoView)
if let sampleBufferVideoView = videoView as? SampleBufferVideoRenderingView {
if #available(iOS 13.0, *) {
sampleBufferVideoView.sampleBufferLayer.preventsDisplaySleepDuringVideoPlayback = true
}
if #available(iOSApplicationExtension 15.0, iOS 15.0, *), AVPictureInPictureController.isPictureInPictureSupported() {
final class PlaybackDelegateImpl: NSObject, AVPictureInPictureSampleBufferPlaybackDelegate {
func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, setPlaying playing: Bool) {
}
func pictureInPictureControllerTimeRangeForPlayback(_ pictureInPictureController: AVPictureInPictureController) -> CMTimeRange {
return CMTimeRange(start: .zero, duration: .positiveInfinity)
}
func pictureInPictureControllerIsPlaybackPaused(_ pictureInPictureController: AVPictureInPictureController) -> Bool {
return false
}
func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, didTransitionToRenderSize newRenderSize: CMVideoDimensions) {
}
func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, skipByInterval skipInterval: CMTime, completion completionHandler: @escaping () -> Void) {
completionHandler()
}
public func pictureInPictureControllerShouldProhibitBackgroundAudioPlayback(_ pictureInPictureController: AVPictureInPictureController) -> Bool {
return false
}
}
let pictureInPictureController = AVPictureInPictureController(contentSource: AVPictureInPictureController.ContentSource(sampleBufferDisplayLayer: sampleBufferVideoView.sampleBufferLayer, playbackDelegate: PlaybackDelegateImpl()))
pictureInPictureController.delegate = self
pictureInPictureController.canStartPictureInPictureAutomaticallyFromInline = true
pictureInPictureController.requiresLinearPlayback = true
self.pictureInPictureController = pictureInPictureController
}
}
videoView.setOnOrientationUpdated { [weak state] _, _ in
state?.updated(transition: .immediate)
}
videoView.setOnFirstFrameReceived { [weak self, weak state] _ in
guard let strongSelf = self else {
return
}
strongSelf.hadVideo = true
strongSelf.activityIndicatorView?.removeFromSuperview()
strongSelf.activityIndicatorView = nil
strongSelf.noSignalTimer?.invalidate()
strongSelf.noSignalTimer = nil
strongSelf.noSignalTimeout = false
strongSelf.noSignalView?.removeFromSuperview()
strongSelf.noSignalView = nil
//strongSelf.translatesAutoresizingMaskIntoConstraints = false
//strongSelf.maximumZoomScale = 4.0
state?.updated(transition: .immediate)
}
}
}
}
if let videoView = self.videoView {
var isVideoVisible = component.isVisible
if let pictureInPictureController = self.pictureInPictureController {
if pictureInPictureController.isPictureInPictureActive {
isVideoVisible = true
}
}
videoView.updateIsEnabled(isVideoVisible)
var aspect = videoView.getAspect()
if aspect <= 0.01 {
aspect = 3.0 / 4.0
}
let videoSize = CGSize(width: aspect * 100.0, height: 100.0).aspectFitted(availableSize)
let blurredVideoSize = videoSize.aspectFilled(availableSize)
transition.withAnimation(.none).setFrame(view: videoView, frame: CGRect(origin: CGPoint(x: floor((availableSize.width - videoSize.width) / 2.0), y: floor((availableSize.height - videoSize.height) / 2.0)), size: videoSize), completion: nil)
if let videoBlurView = self.videoBlurView {
videoBlurView.updateIsEnabled(component.isVisible)
transition.withAnimation(.none).setFrame(view: videoBlurView, frame: CGRect(origin: CGPoint(x: floor((availableSize.width - blurredVideoSize.width) / 2.0), y: floor((availableSize.height - blurredVideoSize.height) / 2.0)), size: blurredVideoSize), completion: nil)
}
}
if !self.hadVideo {
var activityIndicatorTransition = transition
let activityIndicatorView: ComponentHostView<Empty>
if let current = self.activityIndicatorView {
activityIndicatorView = current
} else {
activityIndicatorTransition = transition.withAnimation(.none)
activityIndicatorView = ComponentHostView<Empty>()
self.activityIndicatorView = activityIndicatorView
self.addSubview(activityIndicatorView)
}
let activityIndicatorSize = activityIndicatorView.update(
transition: transition,
component: AnyComponent(ActivityIndicatorComponent(color: .white)),
environment: {},
containerSize: CGSize(width: 100.0, height: 100.0)
)
let activityIndicatorFrame = CGRect(origin: CGPoint(x: floor((availableSize.width - activityIndicatorSize.width) / 2.0), y: floor((availableSize.height - activityIndicatorSize.height) / 2.0)), size: activityIndicatorSize)
activityIndicatorTransition.setFrame(view: activityIndicatorView, frame: activityIndicatorFrame, completion: nil)
if self.noSignalTimer == nil {
if #available(iOS 10.0, *) {
let noSignalTimer = Timer(timeInterval: 20.0, repeats: false, block: { [weak self] _ in
guard let strongSelf = self else {
return
}
strongSelf.noSignalTimeout = true
strongSelf.state?.updated(transition: .immediate)
})
self.noSignalTimer = noSignalTimer
RunLoop.main.add(noSignalTimer, forMode: .common)
}
}
if self.noSignalTimeout {
var noSignalTransition = transition
let noSignalView: ComponentHostView<Empty>
if let current = self.noSignalView {
noSignalView = current
} else {
noSignalTransition = transition.withAnimation(.none)
noSignalView = ComponentHostView<Empty>()
self.noSignalView = noSignalView
self.addSubview(noSignalView)
noSignalView.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3)
}
let presentationData = component.call.accountContext.sharedContext.currentPresentationData.with { $0 }
let noSignalSize = noSignalView.update(
transition: transition,
component: AnyComponent(MultilineTextComponent(
text: NSAttributedString(string: component.isAdmin ? presentationData.strings.LiveStream_NoSignalAdminText : presentationData.strings.LiveStream_NoSignalUserText(component.peerTitle).string, font: Font.regular(16.0), textColor: .white, paragraphAlignment: .center),
horizontalAlignment: .center,
maximumNumberOfLines: 0
)),
environment: {},
containerSize: CGSize(width: availableSize.width - 16.0 * 2.0, height: 1000.0)
)
noSignalTransition.setFrame(view: noSignalView, frame: CGRect(origin: CGPoint(x: floor((availableSize.width - noSignalSize.width) / 2.0), y: activityIndicatorFrame.maxY + 24.0), size: noSignalSize), completion: nil)
}
}
self.component = component
component.activatePictureInPicture.connect { [weak self] completion in
guard let strongSelf = self, let pictureInPictureController = strongSelf.pictureInPictureController else {
return
}
pictureInPictureController.startPictureInPicture()
completion(Void())
}
return availableSize
}
public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, restoreUserInterfaceForPictureInPictureStopWithCompletionHandler completionHandler: @escaping (Bool) -> Void) {
guard let component = self.component else {
completionHandler(false)
return
}
component.bringBackControllerForPictureInPictureDeactivation {
completionHandler(true)
}
}
func pictureInPictureControllerDidStartPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
self.state?.updated(transition: .immediate)
}
func pictureInPictureControllerDidStopPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
self.state?.updated(transition: .immediate)
}
}
public func makeView() -> View {
return View(frame: CGRect())
}
public func update(view: View, availableSize: CGSize, state: State, environment: Environment<Empty>, transition: Transition) -> CGSize {
return view.update(component: self, availableSize: availableSize, state: state, transition: transition)
}
}