player: Fix vertical videos stretched to full screen

On the HiMedia/Amlogic TV the video renders through the vendor video
plane, which scales the decoded stream to the whole panel and ignores
the letterbox geometry AspectRatioFrameLayout lays out for the
SurfaceView. Portrait videos therefore filled the screen instead of
being letterboxed; on emulators the same code was correct.

Render the video in a TextureView instead: it lives in the normal
view tree, so the aspect ratio is honored on every device. Verified
on the HiMedia box (vertical short letterboxed, landscape fills the
screen as before) and on the emulator.

Closes #1

app/src/main/java/net/jeena/jtubetv/ui/screens/PlayerScreen.kt

@@ -4,9 +4,11 @@ import android.net.Uri
 import android.os.Handler
 import android.os.Looper
 import android.view.KeyEvent
+import android.view.LayoutInflater
 import android.view.ViewGroup
 import android.widget.Toast
 import androidx.activity.compose.BackHandler
+import androidx.media3.ui.AspectRatioFrameLayout
 import androidx.compose.foundation.background
 import androidx.compose.foundation.focusable
 import androidx.compose.foundation.layout.Box
@@ -58,6 +60,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 import net.jeena.jtubetv.AppGraph
+import net.jeena.jtubetv.R
 import net.jeena.jtubetv.data.PeerTubeRepository
 import net.jeena.jtubetv.data.api.VideoDetailDto
 import net.jeena.jtubetv.data.auth.TokenStore
@@ -366,8 +369,13 @@ private fun PlayerSurface(
     ) {
         AndroidView(
             factory = { ctx ->
-                PlayerView(ctx).apply {
+                // TextureView surface (layout file): SurfaceView goes through the
+                // vendor video plane on Amlogic boxes and gets stretched full
+                // screen regardless of the letterbox geometry (issue #1).
+                (LayoutInflater.from(ctx)
+                    .inflate(R.layout.player_video_view, null) as PlayerView).apply {
                     useController = true
+                    resizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIT
                     this.player = player
                     isFocusable = false
                     descendantFocusability = ViewGroup.FOCUS_BLOCK_DESCENDANTS

app/src/main/res/layout/player_video_view.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Player view with a TextureView surface: SurfaceView is routed through the
+     vendor video plane on some TV SoCs (Amlogic/HiMedia), which scales the
+     decoded video to the whole panel and ignores the letterbox geometry that
+     AspectRatioFrameLayout sets up, so portrait videos end up stretched full
+     screen. A TextureView renders in the normal view tree and honors the
+     aspect ratio everywhere (git issue #1). -->
+<androidx.media3.ui.PlayerView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/player_view"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:surface_type="texture_view" />