de4925adf9
- video_player: ExoPlayer (Android) / AVPlayer (iOS/macOS) backend with PixelBufferSink, method-channel adapter, Dart-side XVideoPlayer + testing fake. - insets: XInsets singleton + XAnimatedInsets widget lerp the system viewPadding over 220ms so OS bar visibility toggles (immersiveSticky <-> edgeToEdge) slide bottom-/top-anchored UI into place instead of snapping by the nav-bar / status-bar height.
56 lines
1.7 KiB
Swift
56 lines
1.7 KiB
Swift
import CoreVideo
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import Foundation
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#if canImport(UIKit)
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import Flutter
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#else
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import FlutterMacOS
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#endif
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/// Single-slot latest-pixel-buffer sink that feeds a `FlutterTexture`.
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/// Mirrors `PreviewSink` in `darwin/Camera/` — receiver writes, the
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/// engine reads via `copyPixelBuffer()`. We retain only the most
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/// recent buffer; older ones get released the moment a new frame
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/// arrives, bounding memory at one frame.
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final class UxVideoPixelBufferSink: NSObject, FlutterTexture {
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private weak var registry: FlutterTextureRegistry?
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private var textureId: Int64 = -1
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private let bufferQueue = DispatchQueue(
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label: "ux.video.buffer",
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qos: .userInitiated
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)
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private var latestPixelBuffer: CVPixelBuffer?
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func register(with registry: FlutterTextureRegistry) -> Int64 {
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self.registry = registry
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textureId = registry.register(self)
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return textureId
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}
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func unregister() {
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registry?.unregisterTexture(textureId)
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bufferQueue.sync { latestPixelBuffer = nil }
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}
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// MARK: - FlutterTexture
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func copyPixelBuffer() -> Unmanaged<CVPixelBuffer>? {
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var pb: CVPixelBuffer?
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bufferQueue.sync {
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pb = latestPixelBuffer
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latestPixelBuffer = nil
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}
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if let pb = pb { return Unmanaged.passRetained(pb) }
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return nil
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}
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/// Receives a new frame from the AVPlayerItemVideoOutput pump.
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/// Cheap — just swaps the pointer + notifies the registry.
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func deliver(pixelBuffer: CVPixelBuffer) {
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bufferQueue.sync { latestPixelBuffer = pixelBuffer }
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if let registry = registry {
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registry.textureFrameAvailable(textureId)
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}
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}
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}
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