[video_player_android] Fix incorrect dimensions swap (#9199)

Fixes flutter/flutter#166097

*List which issues are fixed by this PR. You must list at least one issue.*

## Manual Testing Overview

| API | Device | Video requires rotation | Works w/o fix| Works w/ fix | Ref |
|---|---|---|---|---|---|
| 35 | Emulator | yes | no | yes | #9199 (comment) by @marvin-kolja |
| 34 | Pixel Tablet | no | no | yes | #9199 (comment) by @camsim99  |
| 34 | Pixel Tablet | yes | no | yes | @camsim99  |
| 33 | Samsung A71 | ? | ? | yes | #9199 (comment) by @PaulineMoovency  |
| 32 | Pixel 3A | yes | no | yes | @camsim99 |
| 27 | Samsung Galaxy J7 | yes | yes | yes | @camsim99 |

## Pre-Review Checklist

[^1]: Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling.

Author: marvin-kolja

packages/video_player/video_player_android/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 2.8.4
+
+* Fixes incorrect width/height swap ([bug](https://github.com/flutter/flutter/issues/166097)). The swap was originally required for the uncorrected width/height of `Format` but was mistakenly retained after [switching to `VideoSize`](https://github.com/flutter/packages/pull/6535), which already accounts for rotation.
+* Fixes example app layout issue caused by `Transform.rotate`  not affecting space calculation (following [#8685](https://github.com/flutter/packages/pull/8685)).
+
 ## 2.8.3
 
 * Changes plugin to use `TextureRegistry.SurfaceProducer.handlesCropAndRotation` to detect

packages/video_player/video_player_android/android/src/main/java/io/flutter/plugins/videoplayer/texture/TextureExoPlayerEventListener.java

@@ -38,67 +38,55 @@ public TextureExoPlayerEventListener(
   @Override
   protected void sendInitialized() {
     VideoSize videoSize = exoPlayer.getVideoSize();
-    int rotationCorrection = 0;
+    RotationDegrees rotationCorrection = RotationDegrees.ROTATE_0;
     int width = videoSize.width;
     int height = videoSize.height;
     if (width != 0 && height != 0) {
-      RotationDegrees reportedRotationCorrection = RotationDegrees.ROTATE_0;
-
       if (Build.VERSION.SDK_INT <= 21) {
         // On API 21 and below, Exoplayer may not internally handle rotation correction
         // and reports it through VideoSize.unappliedRotationDegrees. We may apply it to
         // fix the case of upside-down playback.
         try {
-          reportedRotationCorrection =
+          RotationDegrees unappliedRotation =
               RotationDegrees.fromDegrees(videoSize.unappliedRotationDegrees);
-          rotationCorrection =
-              getRotationCorrectionFromUnappliedRotation(reportedRotationCorrection);
+          rotationCorrection = getRotationCorrectionFromUnappliedRotation(unappliedRotation);
         } catch (IllegalArgumentException e) {
           // Unapplied rotation other than 0, 90, 180, 270 reported by VideoSize. Because this is
           // unexpected, we apply no rotation correction.
-          reportedRotationCorrection = RotationDegrees.ROTATE_0;
-          rotationCorrection = 0;
+          rotationCorrection = RotationDegrees.ROTATE_0;
         }
       } else if (surfaceProducerHandlesCropAndRotation) {
         // When the SurfaceTexture backend for Impeller is used, the preview should already
         // be correctly rotated.
-        rotationCorrection = 0;
+        rotationCorrection = RotationDegrees.ROTATE_0;
       } else {
         // The video's Format also provides a rotation correction that may be used to
         // correct the rotation, so we try to use that to correct the video rotation
         // when the ImageReader backend for Impeller is used.
-        rotationCorrection = getRotationCorrectionFromFormat(exoPlayer);
+        int rawVideoFormatRotation = getRotationCorrectionFromFormat(exoPlayer);
 
         try {
-          reportedRotationCorrection = RotationDegrees.fromDegrees(rotationCorrection);
+          rotationCorrection = RotationDegrees.fromDegrees(rawVideoFormatRotation);
         } catch (IllegalArgumentException e) {
           // Rotation correction other than 0, 90, 180, 270 reported by Format. Because this is
           // unexpected we apply no rotation correction.
-          reportedRotationCorrection = RotationDegrees.ROTATE_0;
-          rotationCorrection = 0;
+          rotationCorrection = RotationDegrees.ROTATE_0;
         }
       }
-
-      // Switch the width/height if video was taken in portrait mode and a rotation
-      // correction was detected.
-      if (reportedRotationCorrection == RotationDegrees.ROTATE_90
-          || reportedRotationCorrection == RotationDegrees.ROTATE_270) {
-        width = videoSize.height;
-        height = videoSize.width;
-      }
     }
-    events.onInitialized(width, height, exoPlayer.getDuration(), rotationCorrection);
+    events.onInitialized(width, height, exoPlayer.getDuration(), rotationCorrection.getDegrees());
   }
 
-  private int getRotationCorrectionFromUnappliedRotation(RotationDegrees unappliedRotationDegrees) {
-    int rotationCorrection = 0;
+  private RotationDegrees getRotationCorrectionFromUnappliedRotation(
+      RotationDegrees unappliedRotationDegrees) {
+    RotationDegrees rotationCorrection = RotationDegrees.ROTATE_0;
 
     // Rotating the video with ExoPlayer does not seem to be possible with a Surface,
     // so inform the Flutter code that the widget needs to be rotated to prevent
     // upside-down playback for videos with unappliedRotationDegrees of 180 (other orientations
     // work correctly without correction).
     if (unappliedRotationDegrees == RotationDegrees.ROTATE_180) {
-      rotationCorrection = unappliedRotationDegrees.getDegrees();
+      rotationCorrection = unappliedRotationDegrees;
     }
 
     return rotationCorrection;

packages/video_player/video_player_android/android/src/test/java/io/flutter/plugins/videoplayer/TextureExoPlayerEventListenerTest.java

@@ -77,7 +77,7 @@ public void onPlaybackStateChangedReadySendInitialized_belowAndroid21() {
     when(mockExoPlayer.getVideoFormat()).thenReturn(videoFormat);
 
     eventListener.onPlaybackStateChanged(Player.STATE_READY);
-    verify(mockCallbacks).onInitialized(400, 800, 10L, rotationCorrection);
+    verify(mockCallbacks).onInitialized(800, 400, 10L, rotationCorrection);
   }
 
   @Test
@@ -91,7 +91,7 @@ public void onPlaybackStateChangedReadySendInitialized_belowAndroid21() {
     when(mockExoPlayer.getDuration()).thenReturn(10L);
 
     eventListener.onPlaybackStateChanged(Player.STATE_READY);
-    verify(mockCallbacks).onInitialized(400, 800, 10L, 0);
+    verify(mockCallbacks).onInitialized(800, 400, 10L, 0);
   }
 
   @Test
@@ -124,7 +124,7 @@ public void onPlaybackStateChangedReadySendInitialized_belowAndroid21() {
     when(mockExoPlayer.getVideoFormat()).thenReturn(videoFormat);
 
     eventListener.onPlaybackStateChanged(Player.STATE_READY);
-    verify(mockCallbacks).onInitialized(400, 800, 10L, 90);
+    verify(mockCallbacks).onInitialized(800, 400, 10L, 90);
   }
 
   @Test
@@ -138,7 +138,7 @@ public void onPlaybackStateChangedReadySendInitialized_belowAndroid21() {
     when(mockExoPlayer.getDuration()).thenReturn(10L);
 
     eventListener.onPlaybackStateChanged(Player.STATE_READY);
-    verify(mockCallbacks).onInitialized(400, 800, 10L, 0);
+    verify(mockCallbacks).onInitialized(800, 400, 10L, 0);
   }
 
   @Test
@@ -170,7 +170,7 @@ public void onPlaybackStateChangedReadySendInitialized_belowAndroid21() {
     when(mockExoPlayer.getVideoFormat()).thenReturn(videoFormat);
 
     eventListener.onPlaybackStateChanged(Player.STATE_READY);
-    verify(mockCallbacks).onInitialized(400, 800, 10L, 270);
+    verify(mockCallbacks).onInitialized(800, 400, 10L, 270);
   }
 
   @Test

packages/video_player/video_player_android/example/lib/mini_controller.dart

@@ -7,7 +7,6 @@
 
 import 'dart:async';
 import 'dart:io';
-import 'dart:math';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
@@ -467,12 +466,13 @@ class _VideoPlayerWithRotation extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return rotation == 0
-        ? child
-        : Transform.rotate(
-            angle: rotation * pi / 180,
-            child: child,
-          );
+    if (rotation == 0) {
+      return child;
+    }
+    return RotatedBox(
+      quarterTurns: rotation ~/ 90,
+      child: child,
+    );
   }
 }
 

packages/video_player/video_player_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: video_player_android
 description: Android implementation of the video_player plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/video_player/video_player_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+video_player%22
-version: 2.8.3
+version: 2.8.4
 
 environment:
   sdk: ^3.6.0