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.
58 lines
2.4 KiB
Dart
58 lines
2.4 KiB
Dart
import 'package:flutter/widgets.dart';
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import 'x_video_player.dart' show XVideoPlayerController, XVideoPlayerValue;
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/// Renders the active frame of [controller] into the parent's box.
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/// Sizes itself to the parent — wrap in `AspectRatio` / `FittedBox` /
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/// `Hero` to control framing.
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///
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/// Single render path: a Flutter [Texture] widget over the texture
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/// the native side hands back at `create()` time. Android feeds the
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/// texture from an [`ExoPlayer`] via a `SurfaceTexture`; Apple feeds
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/// it from `AVPlayerItemVideoOutput`. Because the rendered content
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/// lives inside Flutter's compositor:
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///
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/// - gallery hero / dismiss animations stay buttery
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/// - `RenderRepaintBoundary.toImage` (the gallery's `snapshot`
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/// mechanism) sees the actual frame and can freeze it across
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/// transitions
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/// - no per-frame `ImageReader` round-trip — scrub latency stays at
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/// codec-seek speed
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///
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/// Codec crop is handled native-side: Media3's
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/// `DefaultVideoFrameProcessor` (Android) re-applies the codec's crop
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/// rect downstream of the broken Huawei `SurfaceTexture` transform
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/// matrix, so the green right-edge artifact never reaches Flutter's
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/// sampler. Apple's `AVPlayerItemVideoOutput` is crop-correct by
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/// construction.
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class XVideoPlayerView extends StatelessWidget {
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const XVideoPlayerView({super.key, required this.controller});
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final XVideoPlayerController controller;
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@override
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Widget build(BuildContext context) {
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return ValueListenableBuilder<XVideoPlayerValue>(
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valueListenable: controller,
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builder: (context, value, _) {
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if (!value.isInitialized) return SizedBox.expand();
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final textureId = controller.textureId;
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if (textureId == null) return SizedBox.expand();
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Widget child = Texture(textureId: textureId);
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// Apple's `AVPlayerItemVideoOutput` hands us `CVPixelBuffer`s in
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// the file's natural orientation — the video track's
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// `preferredTransform` rotation is NOT applied. The native side
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// reports the rotation as quarter-turns; we apply it here so
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// the rendered frame reads upright. Android always reports 0
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// because the codec + GLES blit handle rotation upstream of
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// Flutter.
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final turns = value.rotationQuarterTurns;
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if (turns != 0) {
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child = RotatedBox(quarterTurns: turns, child: child);
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}
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return child;
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},
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);
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}
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}
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