Native picture in picture support

submodules/AccountContext/Sources/OverlayMediaItemNode.swift

@@ -1,6 +1,7 @@
 import Foundation
 import UIKit
 import AsyncDisplayKit
+import AVKit
 
 public struct OverlayMediaItemNodeGroup: Hashable, RawRepresentable {
     public var rawValue: Int32
@@ -61,4 +62,9 @@ open class OverlayMediaItemNode: ASDisplayNode {
     open func performCustomTransitionOut() -> Bool {
         return false
     }
+
+    @available(iOSApplicationExtension 15.0, iOS 15.0, *)
+    open func makeNativeContentSource() -> AVPictureInPictureController.ContentSource? {
+        return nil
+    }
 }

submodules/AccountContext/Sources/OverlayMediaManager.swift

@@ -1,6 +1,8 @@
 import Foundation
 import UIKit
 import Display
+import AVFoundation
+import AsyncDisplayKit
 
 public final class OverlayMediaControllerEmbeddingItem {
     public let position: CGPoint
@@ -15,6 +17,10 @@ public final class OverlayMediaControllerEmbeddingItem {
     }
 }
 
+public protocol PictureInPictureContent: AnyObject {
+    var videoNode: ASDisplayNode { get }
+}
+
 public protocol OverlayMediaController: AnyObject {
     var updatePossibleEmbeddingItem: ((OverlayMediaControllerEmbeddingItem?) -> Void)? { get set }
     var embedPossibleEmbeddingItem: ((OverlayMediaControllerEmbeddingItem) -> Bool)? { get set }
@@ -22,6 +28,10 @@ public protocol OverlayMediaController: AnyObject {
     var hasNodes: Bool { get }
     func addNode(_ node: OverlayMediaItemNode, customTransition: Bool)
     func removeNode(_ node: OverlayMediaItemNode, customTransition: Bool)
+
+    func setPictureInPictureContent(content: PictureInPictureContent, absoluteRect: CGRect)
+    func setPictureInPictureContentHidden(content: PictureInPictureContent, isHidden value: Bool)
+    func removePictureInPictureContent(content: PictureInPictureContent)
 }
 
 public final class OverlayMediaManager {

submodules/AccountContext/Sources/UniversalVideoNode.swift

@@ -7,6 +7,7 @@ import TelegramCore
 import Display
 import TelegramAudio
 import UniversalMediaPlayer
+import AVFoundation
 
 public protocol UniversalVideoContentNode: AnyObject {
     var ready: Signal<Void, NoError> { get }
@@ -29,6 +30,7 @@ public protocol UniversalVideoContentNode: AnyObject {
     func removePlaybackCompleted(_ index: Int)
     func fetchControl(_ control: UniversalVideoNodeFetchControl)
     func notifyPlaybackControlsHidden(_ hidden: Bool)
+    func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool)
 }
 
 public protocol UniversalVideoContent {
@@ -332,4 +334,36 @@ public final class UniversalVideoNode: ASDisplayNode {
             self.decoration.tap()
         }
     }
+
+    public func getVideoLayer() -> AVSampleBufferDisplayLayer? {
+        guard let contentNode = self.contentNode else {
+            return nil
+        }
+
+        func findVideoLayer(layer: CALayer) -> AVSampleBufferDisplayLayer? {
+            if let layer = layer as? AVSampleBufferDisplayLayer {
+                return layer
+            }
+
+            if let sublayers = layer.sublayers {
+                for sublayer in sublayers {
+                    if let result = findVideoLayer(layer: sublayer) {
+                        return result
+                    }
+                }
+            }
+
+            return nil
+        }
+
+        return findVideoLayer(layer: contentNode.layer)
+    }
+
+    public func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+        self.manager.withUniversalVideoContent(id: self.content.id, { contentNode in
+            if let contentNode = contentNode {
+                contentNode.setCanPlaybackWithoutHierarchy(canPlaybackWithoutHierarchy)
+            }
+        })
+    }
 }

submodules/GalleryUI/Sources/GalleryController.swift

@@ -385,6 +385,8 @@ public class GalleryController: ViewController, StandalonePresentableController
     private var screenCaptureEventsDisposable: Disposable?
     
     public var centralItemUpdated: ((MessageId) -> Void)?
+    public var onDidAppear: (() -> Void)?
+    public var useSimpleAnimation: Bool = false
     
     private var initialOrientation: UIInterfaceOrientation?
     
@@ -1037,11 +1039,11 @@ public class GalleryController: ViewController, StandalonePresentableController
             self?.presentingViewController?.dismiss(animated: false, completion: nil)
         }
         
-        self.galleryNode.beginCustomDismiss = { [weak self] in
+        self.galleryNode.beginCustomDismiss = { [weak self] simpleAnimation in
             if let strongSelf = self {
                 strongSelf._hiddenMedia.set(.single(nil))
                 
-                let animatedOutNode = true
+                let animatedOutNode = !simpleAnimation
                 
                 strongSelf.galleryNode.animateOut(animateContent: animatedOutNode, completion: {
                 })
@@ -1296,13 +1298,15 @@ public class GalleryController: ViewController, StandalonePresentableController
                 }
                 centralItemNode.activateAsInitial()
             }
+
+            self.onDidAppear?()
         }
         
         if !self.isPresentedInPreviewingContext() {
             self.galleryNode.setControlsHidden(self.landscape, animated: false)
             if let presentationArguments = self.presentationArguments as? GalleryControllerPresentationArguments {
                 if presentationArguments.animated {
-                    self.galleryNode.animateIn(animateContent: !nodeAnimatesItself)
+                    self.galleryNode.animateIn(animateContent: !nodeAnimatesItself && !self.useSimpleAnimation)
                 }
             }
         }

submodules/GalleryUI/Sources/GalleryControllerNode.swift

@@ -19,7 +19,7 @@ open class GalleryControllerNode: ASDisplayNode, UIScrollViewDelegate, UIGesture
     public var scrollView: UIScrollView
     public var pager: GalleryPagerNode
     
-    public var beginCustomDismiss: () -> Void = { }
+    public var beginCustomDismiss: (Bool) -> Void = { _ in }
     public var completeCustomDismiss: () -> Void = { }
     public var baseNavigationController: () -> NavigationController? = { return nil }
     public var galleryController: () -> ViewController? = { return nil }
@@ -106,9 +106,9 @@ open class GalleryControllerNode: ASDisplayNode, UIScrollViewDelegate, UIGesture
             }
         }
                 
-        self.pager.beginCustomDismiss = { [weak self] in
+        self.pager.beginCustomDismiss = { [weak self] simpleAnimation in
             if let strongSelf = self {
-                strongSelf.beginCustomDismiss()
+                strongSelf.beginCustomDismiss(simpleAnimation)
             }
         }
         
@@ -328,13 +328,15 @@ open class GalleryControllerNode: ASDisplayNode, UIScrollViewDelegate, UIGesture
     }
     
     open func animateIn(animateContent: Bool) {
+        let duration: Double = animateContent ? 0.2 : 0.3
+
         self.backgroundNode.backgroundColor = self.backgroundNode.backgroundColor?.withAlphaComponent(0.0)
         self.statusBar?.alpha = 0.0
         self.navigationBar?.alpha = 0.0
         self.footerNode.alpha = 0.0
         self.currentThumbnailContainerNode?.alpha = 0.0
         
-        UIView.animate(withDuration: 0.2, animations: {
+        UIView.animate(withDuration: duration, animations: {
             self.backgroundNode.backgroundColor = self.backgroundNode.backgroundColor?.withAlphaComponent(1.0)
             if !self.areControlsHidden {
                 self.statusBar?.alpha = 1.0
@@ -346,6 +348,8 @@ open class GalleryControllerNode: ASDisplayNode, UIScrollViewDelegate, UIGesture
         
         if animateContent {
             self.scrollView.layer.animateBounds(from: self.scrollView.layer.bounds.offsetBy(dx: 0.0, dy: -self.scrollView.layer.bounds.size.height), to: self.scrollView.layer.bounds, duration: 0.4, timingFunction: kCAMediaTimingFunctionSpring)
+        } else {
+            self.scrollView.layer.animateAlpha(from: 0.0, to: 1.0, duration: duration)
         }
     }
     
@@ -384,6 +388,11 @@ open class GalleryControllerNode: ASDisplayNode, UIScrollViewDelegate, UIGesture
                 contentAnimationCompleted = true
                 intermediateCompletion()
             })
+        } else {
+            self.scrollView.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.25, removeOnCompletion: false, completion: { _ in
+                contentAnimationCompleted = true
+                intermediateCompletion()
+            })
         }
     }
     

submodules/GalleryUI/Sources/GalleryItemNode.swift

@@ -24,7 +24,7 @@ open class GalleryItemNode: ASDisplayNode {
     public var updateControlsVisibility: (Bool) -> Void = { _ in }
     public var updateOrientation: (UIInterfaceOrientation) -> Void = { _ in }
     public var dismiss: () -> Void = { }
-    public var beginCustomDismiss: () -> Void = { }
+    public var beginCustomDismiss: (Bool) -> Void = { _ in }
     public var completeCustomDismiss: () -> Void = { }
     public var baseNavigationController: () -> NavigationController? = { return nil }
     public var galleryController: () -> ViewController? = { return nil }

submodules/GalleryUI/Sources/GalleryPagerNode.swift

@@ -109,7 +109,7 @@ public final class GalleryPagerNode: ASDisplayNode, UIScrollViewDelegate, UIGest
     public var updateControlsVisibility: (Bool) -> Void = { _ in }
     public var updateOrientation: (UIInterfaceOrientation) -> Void = { _ in }
     public var dismiss: () -> Void = { }
-    public var beginCustomDismiss: () -> Void = { }
+    public var beginCustomDismiss: (Bool) -> Void = { _ in }
     public var completeCustomDismiss: () -> Void = { }
     public var baseNavigationController: () -> NavigationController? = { return nil }
     public var galleryController: () -> ViewController? = { return nil }

submodules/GalleryUI/Sources/Items/UniversalVideoGalleryItem.swift

@@ -20,6 +20,7 @@ import SaveToCameraRoll
 import UndoUI
 import TelegramUIPreferences
 import OpenInExternalAppUI
+import AVKit
 
 public enum UniversalVideoGalleryItemContentInfo {
     case message(Message)
@@ -463,6 +464,176 @@ private final class MoreHeaderButton: HighlightableButtonNode {
     }
 }
 
+@available(iOS 15.0, *)
+private final class PictureInPictureContentImpl: NSObject, PictureInPictureContent, AVPictureInPictureControllerDelegate {
+    private final class PlaybackDelegate: NSObject, AVPictureInPictureSampleBufferPlaybackDelegate {
+        private let node: UniversalVideoNode
+        private var statusDisposable: Disposable?
+        private var status: MediaPlayerStatus?
+        weak var pictureInPictureController: AVPictureInPictureController?
+
+        init(node: UniversalVideoNode) {
+            self.node = node
+
+            super.init()
+
+            self.statusDisposable = (self.node.status
+            |> deliverOnMainQueue).start(next: { [weak self] status in
+                guard let strongSelf = self else {
+                    return
+                }
+                strongSelf.status = status
+                strongSelf.pictureInPictureController?.invalidatePlaybackState()
+            })
+        }
+
+        deinit {
+            self.statusDisposable?.dispose()
+        }
+
+        public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, setPlaying playing: Bool) {
+            self.node.togglePlayPause()
+        }
+
+        public func pictureInPictureControllerTimeRangeForPlayback(_ pictureInPictureController: AVPictureInPictureController) -> CMTimeRange {
+            guard let status = self.status else {
+                return CMTimeRange(start: CMTime(seconds: 0.0, preferredTimescale: CMTimeScale(30.0)), duration: CMTime(seconds: 0.0, preferredTimescale: CMTimeScale(30.0)))
+            }
+            return CMTimeRange(start: CMTime(seconds: 0.0, preferredTimescale: CMTimeScale(30.0)), duration: CMTime(seconds: status.duration, preferredTimescale: CMTimeScale(30.0)))
+        }
+
+        public func pictureInPictureControllerIsPlaybackPaused(_ pictureInPictureController: AVPictureInPictureController) -> Bool {
+            guard let status = self.status else {
+                return false
+            }
+            switch status.status {
+            case .playing:
+                return false
+            case .buffering, .paused:
+                return true
+            }
+        }
+
+        public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, didTransitionToRenderSize newRenderSize: CMVideoDimensions) {
+        }
+
+        public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, skipByInterval skipInterval: CMTime, completion completionHandler: @escaping () -> Void) {
+            completionHandler()
+        }
+
+        public func pictureInPictureControllerShouldProhibitBackgroundAudioPlayback(_ pictureInPictureController: AVPictureInPictureController) -> Bool {
+            return false
+        }
+    }
+
+    private weak var overlayController: OverlayMediaController?
+    private var pictureInPictureController: AVPictureInPictureController?
+    private var contentDelegate: PlaybackDelegate?
+    private let node: UniversalVideoNode
+    private let willBegin: (PictureInPictureContentImpl) -> Void
+    private let didEnd: (PictureInPictureContentImpl) -> Void
+    private let expand: (@escaping () -> Void) -> Void
+    private var pictureInPictureTimer: SwiftSignalKit.Timer?
+    private var didExpand: Bool = false
+
+    init(overlayController: OverlayMediaController, videoNode: UniversalVideoNode, willBegin: @escaping (PictureInPictureContentImpl) -> Void, didEnd: @escaping (PictureInPictureContentImpl) -> Void, expand: @escaping (@escaping () -> Void) -> Void) {
+        self.overlayController = overlayController
+        self.node = videoNode
+        self.willBegin = willBegin
+        self.didEnd = didEnd
+        self.expand = expand
+
+        self.node.setCanPlaybackWithoutHierarchy(true)
+
+        super.init()
+
+        let contentDelegate = PlaybackDelegate(node: self.node)
+        self.contentDelegate = contentDelegate
+
+        let pictureInPictureController = AVPictureInPictureController(contentSource: AVPictureInPictureController.ContentSource(sampleBufferDisplayLayer: videoNode.getVideoLayer()!, playbackDelegate: contentDelegate))
+        self.pictureInPictureController = pictureInPictureController
+        contentDelegate.pictureInPictureController = pictureInPictureController
+        
+        pictureInPictureController.canStartPictureInPictureAutomaticallyFromInline = false
+        pictureInPictureController.requiresLinearPlayback = true
+        pictureInPictureController.delegate = self
+        self.pictureInPictureController = pictureInPictureController
+        let timer = SwiftSignalKit.Timer(timeout: 0.005, repeat: true, completion: { [weak self] in
+            guard let strongSelf = self, let pictureInPictureController = strongSelf.pictureInPictureController else {
+                return
+            }
+            if pictureInPictureController.isPictureInPicturePossible {
+                strongSelf.pictureInPictureTimer?.invalidate()
+                strongSelf.pictureInPictureTimer = nil
+
+                pictureInPictureController.startPictureInPicture()
+            }
+        }, queue: .mainQueue())
+        self.pictureInPictureTimer = timer
+        timer.start()
+    }
+
+    deinit {
+        self.pictureInPictureTimer?.invalidate()
+        self.node.setCanPlaybackWithoutHierarchy(false)
+    }
+
+    var videoNode: ASDisplayNode {
+        return self.node
+    }
+
+    public func pictureInPictureControllerWillStartPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
+        Queue.mainQueue().after(0.1, { [weak self] in
+            guard let strongSelf = self else {
+                return
+            }
+            strongSelf.willBegin(strongSelf)
+
+            if let overlayController = strongSelf.overlayController {
+                overlayController.setPictureInPictureContentHidden(content: strongSelf, isHidden: true)
+            }
+        })
+    }
+
+    public func pictureInPictureControllerDidStartPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
+        self.didEnd(self)
+    }
+
+    public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, failedToStartPictureInPictureWithError error: Error) {
+    }
+
+    public func pictureInPictureControllerWillStopPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
+    }
+
+    public func pictureInPictureControllerDidStopPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
+        guard let overlayController = self.overlayController else {
+            return
+        }
+        overlayController.removePictureInPictureContent(content: self)
+        if self.didExpand {
+            return
+        }
+        self.node.continuePlayingWithoutSound()
+    }
+
+    public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, restoreUserInterfaceForPictureInPictureStopWithCompletionHandler completionHandler: @escaping (Bool) -> Void) {
+        self.expand { [weak self] in
+            guard let strongSelf = self else {
+                return
+            }
+
+            strongSelf.didExpand = true
+
+            if let overlayController = strongSelf.overlayController {
+                overlayController.setPictureInPictureContentHidden(content: strongSelf, isHidden: false)
+                strongSelf.node.alpha = 0.02
+            }
+
+            completionHandler(true)
+        }
+    }
+}
+
 final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
     private let context: AccountContext
     private let presentationData: PresentationData
@@ -485,6 +656,7 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
     private var videoNodeUserInteractionEnabled: Bool = false
     private var videoFramePreview: FramePreview?
     private var pictureInPictureNode: UniversalVideoGalleryItemPictureInPictureNode?
+    private var disablePictureInPicturePlaceholder: Bool = false
     private let statusButtonNode: HighlightableButtonNode
     private let statusNode: RadialStatusNode
     private var statusNodeShouldBeHidden = true
@@ -532,6 +704,8 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
     
     private var customUnembedWhenPortrait: ((OverlayMediaItemNode) -> Bool)?
 
+    private var pictureInPictureContent: AnyObject?
+    
     init(context: AccountContext, presentationData: PresentationData, performAction: @escaping (GalleryControllerInteractionTapAction) -> Void, openActionOptions: @escaping (GalleryControllerInteractionTapAction, Message) -> Void, present: @escaping (ViewController, Any?) -> Void) {
         self.context = context
         self.presentationData = presentationData
@@ -1209,7 +1383,7 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
     }
     
     private func updateDisplayPlaceholder(_ displayPlaceholder: Bool) {
-        if displayPlaceholder {
+        if displayPlaceholder && !self.disablePictureInPicturePlaceholder {
             if self.pictureInPictureNode == nil {
                 let pictureInPictureNode = UniversalVideoGalleryItemPictureInPictureNode(strings: self.presentationData.strings)
                 pictureInPictureNode.isUserInteractionEnabled = false
@@ -1856,7 +2030,7 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
                 }
             }
             if customUnembedWhenPortrait(overlayNode) {
-                self.beginCustomDismiss()
+                self.beginCustomDismiss(false)
                 self.statusNode.isHidden = true
                 self.animateOut(toOverlay: overlayNode, completion: { [weak self] in
                     self?.completeCustomDismiss()
@@ -1866,9 +2040,65 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
     }
     
     @objc func pictureInPictureButtonPressed() {
-        if let item = self.item, let videoNode = self.videoNode {
+        if let item = self.item, let videoNode = self.videoNode, let overlayController = self.context.sharedContext.mediaManager.overlayMediaManager.controller {
             videoNode.setContinuePlayingWithoutSoundOnLostAudioSession(false)
 
+            let context = self.context
+            let baseNavigationController = self.baseNavigationController()
+            let playbackRate = self.playbackRate
+
+            if #available(iOSApplicationExtension 15.0, iOS 15.0, *), AVPictureInPictureController.isPictureInPictureSupported() {
+                self.disablePictureInPicturePlaceholder = true
+
+                let overlayVideoNode = UniversalVideoNode(postbox: self.context.account.postbox, audioSession: self.context.sharedContext.mediaManager.audioSession, manager: self.context.sharedContext.mediaManager.universalVideoManager, decoration: GalleryVideoDecoration(), content: item.content, priority: .overlay)
+                let absoluteRect = videoNode.view.convert(videoNode.view.bounds, to: nil)
+                overlayVideoNode.frame = absoluteRect
+                overlayVideoNode.updateLayout(size: absoluteRect.size, transition: .immediate)
+                overlayVideoNode.canAttachContent = true
+
+                let content = PictureInPictureContentImpl(overlayController: overlayController, videoNode: overlayVideoNode, willBegin: { [weak self] content in
+                    guard let strongSelf = self else {
+                        return
+                    }
+                    strongSelf.beginCustomDismiss(true)
+                }, didEnd: { [weak self] _ in
+                    guard let strongSelf = self else {
+                        return
+                    }
+                    strongSelf.completeCustomDismiss()
+                }, expand: { [weak baseNavigationController] completion in
+                    guard let contentInfo = item.contentInfo else {
+                        return
+                    }
+
+                    switch contentInfo {
+                    case let .message(message):
+                        let gallery = GalleryController(context: context, source: .peerMessagesAtId(messageId: message.id, chatLocation: .peer(message.id.peerId), chatLocationContextHolder: Atomic<ChatLocationContextHolder?>(value: nil)), playbackRate: playbackRate, replaceRootController: { [weak baseNavigationController] controller, ready in
+                            if let baseNavigationController = baseNavigationController {
+                                baseNavigationController.replaceTopController(controller, animated: false, ready: ready)
+                            }
+                        }, baseNavigationController: baseNavigationController)
+                        gallery.temporaryDoNotWaitForReady = true
+                        gallery.useSimpleAnimation = true
+
+                        baseNavigationController?.view.endEditing(true)
+
+                        (baseNavigationController?.topViewController as? ViewController)?.present(gallery, in: .window(.root), with: GalleryControllerPresentationArguments(transitionArguments: { id, media in
+                            return nil
+                        }))
+
+                        gallery.onDidAppear = {
+                            completion()
+                        }
+                    case .webPage:
+                        break
+                    }
+                })
+
+                self.pictureInPictureContent = content
+
+                self.context.sharedContext.mediaManager.overlayMediaManager.controller?.setPictureInPictureContent(content: content, absoluteRect: absoluteRect)
+            } else {
                 let context = self.context
                 let baseNavigationController = self.baseNavigationController()
                 let mediaManager = self.context.sharedContext.mediaManager
@@ -1962,7 +2192,7 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
                 }
                 context.sharedContext.mediaManager.setOverlayVideoNode(overlayNode)
                 if overlayNode.supernode != nil {
-                self.beginCustomDismiss()
+                    self.beginCustomDismiss(false)
                     self.statusNode.isHidden = true
                     self.animateOut(toOverlay: overlayNode, completion: { [weak self] in
                         self?.completeCustomDismiss()
@@ -1970,6 +2200,7 @@ final class UniversalVideoGalleryItemNode: ZoomableContentGalleryItemNode {
                 }
             }
         }
+    }
 
     private func contentInfo() -> (message: Message, file: TelegramMediaFile?, isWebpage: Bool)? {
         guard let item = self.item else {

submodules/GalleryUI/Sources/SecretMediaPreviewController.swift

@@ -232,7 +232,7 @@ public final class SecretMediaPreviewController: ViewController {
             self?.presentingViewController?.dismiss(animated: false, completion: nil)
         }
         
-        self.controllerNode.beginCustomDismiss = { [weak self] in
+        self.controllerNode.beginCustomDismiss = { [weak self] _ in
             if let strongSelf = self {
                 strongSelf._hiddenMedia.set(.single(nil))
                 

submodules/MediaPlayer/Sources/MediaPlayerNode.swift

@@ -61,6 +61,7 @@ private enum PollStatus: CustomStringConvertible {
 
 public final class MediaPlayerNode: ASDisplayNode {
     public var videoInHierarchy: Bool = false
+    var canPlaybackWithoutHierarchy: Bool = false
     public var updateVideoInHierarchy: ((Bool) -> Void)?
     
     private var videoNode: MediaPlayerNodeDisplayNode
@@ -117,7 +118,7 @@ public final class MediaPlayerNode: ASDisplayNode {
                     videoLayer.setAffineTransform(transform)
                 }
                 
-                if self.videoInHierarchy {
+                if self.videoInHierarchy || self.canPlaybackWithoutHierarchy {
                     if requestFrames {
                         self.startPolling()
                     }
@@ -137,7 +138,7 @@ public final class MediaPlayerNode: ASDisplayNode {
                     switch status {
                         case let .delay(delay):
                             strongSelf.timer = SwiftSignalKit.Timer(timeout: delay, repeat: true, completion: {
-                                if let strongSelf = self, let videoLayer = strongSelf.videoLayer, let (_, requestFrames, _, _) = strongSelf.state, requestFrames, strongSelf.videoInHierarchy {
+                                if let strongSelf = self, let videoLayer = strongSelf.videoLayer, let (_, requestFrames, _, _) = strongSelf.state, requestFrames, (strongSelf.videoInHierarchy || strongSelf.canPlaybackWithoutHierarchy) {
                                     if videoLayer.isReadyForMoreMediaData {
                                         strongSelf.timer?.invalidate()
                                         strongSelf.timer = nil
@@ -385,7 +386,7 @@ public final class MediaPlayerNode: ASDisplayNode {
                         strongSelf.updateState()
                     }
                 }
-                strongSelf.updateVideoInHierarchy?(value)
+                strongSelf.updateVideoInHierarchy?(strongSelf.videoInHierarchy || strongSelf.canPlaybackWithoutHierarchy)
             }
         }
         self.addSubnode(self.videoNode)
@@ -458,4 +459,14 @@ public final class MediaPlayerNode: ASDisplayNode {
     public func reset() {
         self.videoLayer?.flush()
     }
+
+    public func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+        if self.canPlaybackWithoutHierarchy != canPlaybackWithoutHierarchy {
+            self.canPlaybackWithoutHierarchy = canPlaybackWithoutHierarchy
+            if canPlaybackWithoutHierarchy {
+                self.updateState()
+            }
+        }
+        self.updateVideoInHierarchy?(self.videoInHierarchy || self.canPlaybackWithoutHierarchy)
+    }
 }

submodules/TelegramUI/Sources/OverlayMediaController.swift

@@ -5,6 +5,7 @@ import AsyncDisplayKit
 import SwiftSignalKit
 import Postbox
 import AccountContext
+import AVKit
 
 public final class OverlayMediaControllerImpl: ViewController, OverlayMediaController {
     private var controllerNode: OverlayMediaControllerNode {
@@ -14,6 +15,9 @@ public final class OverlayMediaControllerImpl: ViewController, OverlayMediaContr
     public var updatePossibleEmbeddingItem: ((OverlayMediaControllerEmbeddingItem?) -> Void)?
     public var embedPossibleEmbeddingItem: ((OverlayMediaControllerEmbeddingItem) -> Bool)?
 
+    private var pictureInPictureContainer: ASDisplayNode?
+    private var pictureInPictureContent: PictureInPictureContent?
+    
     public init() {
         super.init(navigationBarPresentationData: nil)
         
@@ -45,6 +49,31 @@ public final class OverlayMediaControllerImpl: ViewController, OverlayMediaContr
         self.controllerNode.removeNode(node, customTransition: customTransition)
     }
 
+    public func setPictureInPictureContent(content: PictureInPictureContent, absoluteRect: CGRect) {
+        if self.pictureInPictureContainer == nil {
+            let pictureInPictureContainer = ASDisplayNode()
+            pictureInPictureContainer.clipsToBounds = false
+            self.pictureInPictureContainer = pictureInPictureContainer
+            self.controllerNode.addSubnode(pictureInPictureContainer)
+        }
+        self.pictureInPictureContainer?.clipsToBounds = false
+        self.pictureInPictureContent = content
+        self.pictureInPictureContainer?.addSubnode(content.videoNode)
+    }
+
+    public func setPictureInPictureContentHidden(content: PictureInPictureContent, isHidden value: Bool) {
+        if self.pictureInPictureContent === content {
+            self.pictureInPictureContainer?.clipsToBounds = value
+        }
+    }
+
+    public func removePictureInPictureContent(content: PictureInPictureContent) {
+        if self.pictureInPictureContent === content {
+            self.pictureInPictureContent = nil
+            content.videoNode.removeFromSupernode()
+        }
+    }
+    
     override public func containerLayoutUpdated(_ layout: ContainerViewLayout, transition: ContainedViewLayoutTransition) {
         super.containerLayoutUpdated(layout, transition: transition)
         

submodules/TelegramUniversalVideoContent/Sources/NativeVideoContent.swift

@@ -454,4 +454,8 @@ private final class NativeVideoContentNode: ASDisplayNode, UniversalVideoContent
     
     func notifyPlaybackControlsHidden(_ hidden: Bool) {
     }
+
+    func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+        self.playerNode.setCanPlaybackWithoutHierarchy(canPlaybackWithoutHierarchy)
+    }
 }

submodules/TelegramUniversalVideoContent/Sources/OverlayUniversalVideoNode.swift

@@ -7,8 +7,9 @@ import TelegramCore
 import Postbox
 import TelegramAudio
 import AccountContext
+import AVKit
 
-public final class OverlayUniversalVideoNode: OverlayMediaItemNode {
+public final class OverlayUniversalVideoNode: OverlayMediaItemNode, AVPictureInPictureSampleBufferPlaybackDelegate {
     public let content: UniversalVideoContent
     private let videoNode: UniversalVideoNode
     private let decoration: OverlayVideoDecoration
@@ -179,4 +180,35 @@ public final class OverlayUniversalVideoNode: OverlayMediaItemNode {
     public func controlPlay() {
         self.videoNode.play()
     }
+
+    @available(iOSApplicationExtension 15.0, iOS 15.0, *)
+    override public func makeNativeContentSource() -> AVPictureInPictureController.ContentSource? {
+        guard let videoLayer = self.videoNode.getVideoLayer() else {
+            return nil
+        }
+        return AVPictureInPictureController.ContentSource(sampleBufferDisplayLayer: videoLayer, playbackDelegate: self)
+    }
+
+    public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, setPlaying playing: Bool) {
+        self.controlPlay()
+    }
+
+    public func pictureInPictureControllerTimeRangeForPlayback(_ pictureInPictureController: AVPictureInPictureController) -> CMTimeRange {
+        return CMTimeRange(start: CMTime(seconds: 0.0, preferredTimescale: CMTimeScale(30.0)), duration: CMTime(seconds: 10.0, preferredTimescale: CMTimeScale(30.0)))
+    }
+
+    public func pictureInPictureControllerIsPlaybackPaused(_ pictureInPictureController: AVPictureInPictureController) -> Bool {
+        return false
+    }
+
+    public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, didTransitionToRenderSize newRenderSize: CMVideoDimensions) {
+    }
+
+    public func pictureInPictureController(_ pictureInPictureController: AVPictureInPictureController, skipByInterval skipInterval: CMTime, completion completionHandler: @escaping () -> Void) {
+        completionHandler()
+    }
+
+    public func pictureInPictureControllerShouldProhibitBackgroundAudioPlayback(_ pictureInPictureController: AVPictureInPictureController) -> Bool {
+        return false
+    }
 }

submodules/TelegramUniversalVideoContent/Sources/PlatformVideoContent.swift

@@ -450,4 +450,7 @@ private final class PlatformVideoContentNode: ASDisplayNode, UniversalVideoConte
     
     func notifyPlaybackControlsHidden(_ hidden: Bool) {
     }
+
+    func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+    }
 }

submodules/TelegramUniversalVideoContent/Sources/SystemVideoContent.swift

@@ -289,5 +289,8 @@ private final class SystemVideoContentNode: ASDisplayNode, UniversalVideoContent
     
     func notifyPlaybackControlsHidden(_ hidden: Bool) {   
     }
+
+    func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+    }
 }
 

submodules/TelegramUniversalVideoContent/Sources/WebEmbedPlayerNode.swift

@@ -224,4 +224,7 @@ final class WebEmbedPlayerNode: ASDisplayNode, WKNavigationDelegate {
             self.webView.isUserInteractionEnabled = !hidden
         }
     }
+
+    func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+    }
 }

submodules/TelegramUniversalVideoContent/Sources/WebEmbedVideoContent.swift

@@ -188,4 +188,7 @@ final class WebEmbedVideoContentNode: ASDisplayNode, UniversalVideoContentNode {
     func notifyPlaybackControlsHidden(_ hidden: Bool) {
         self.playerNode.notifyPlaybackControlsHidden(hidden)
     }
+
+    func setCanPlaybackWithoutHierarchy(_ canPlaybackWithoutHierarchy: Bool) {
+    }
 }