perf: misc improvements + android version change

.github/workflows/android-release.yml

@@ -48,6 +48,11 @@ jobs:
 
       - name: Set up Android SDK
         uses: android-actions/setup-android@v4
+        with:
+          # The action's default is "tools platform-tools", but the obsolete "tools"
+          # package has been removed from Google's SDK repository and now fails with
+          # "Failed to find package 'tools'". Gradle/AGP fetch what else they need.
+          packages: platform-tools
 
       - name: Set up Gradle
         uses: gradle/actions/setup-gradle@v6

.github/workflows/ci-pull-request-merge-main.yml

@@ -30,6 +30,11 @@ jobs:
 
       - name: Set up Android SDK
         uses: android-actions/setup-android@v4
+        with:
+          # The action's default is "tools platform-tools", but the obsolete "tools"
+          # package has been removed from Google's SDK repository and now fails with
+          # "Failed to find package 'tools'". Gradle/AGP fetch what else they need.
+          packages: platform-tools
 
       - name: Set up Gradle
         uses: gradle/actions/setup-gradle@v6

Consolation/app/src/main/java/org/centennialoss/consolation/audio/UsbCaptureAudioLoop.kt

@@ -4,6 +4,7 @@ import android.Manifest
 import android.content.Context
 import android.content.pm.PackageManager
 import android.hardware.usb.UsbDevice
+import android.os.Build
 import android.os.SystemClock
 import android.media.AudioAttributes
 import android.media.AudioDeviceInfo
@@ -109,7 +110,13 @@ class UsbCaptureAudioLoop(
 
         val inputCapture: AudioRecord? = try {
             AudioRecord.Builder()
-                .setContext(appContext)
+                .apply {
+                    // setContext() is API 31+. Below that AudioRecord uses the process context,
+                    // which is what appContext is anyway, so there is nothing to substitute.
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+                        setContext(appContext)
+                    }
+                }
                 .setAudioSource(MediaRecorder.AudioSource.UNPROCESSED)
                 .setAudioFormat(
                     AudioFormat.Builder()

Consolation/app/src/main/java/org/centennialoss/consolation/preview/backend/UsbVideoPreviewBackend.kt

@@ -59,6 +59,23 @@ interface UsbVideoPreviewBackend : PreviewRenderer {
     fun setRotation(degrees: Int)
     fun setFlip(horizontal: Boolean, vertical: Boolean)
 
+    /**
+     * Full preview transform for backends that render into a SurfaceView, where
+     * the View system cannot rotate or mirror the content: rotation in degrees,
+     * mirror flags, zoom scale, pan in NDC units (-1..1 across the surface), and the
+     * fit-to-screen content box as a fraction of the surface ([fitScaleX], [fitScaleY] <= 1).
+     */
+    fun setPreviewTransform(
+        rotationDegrees: Int,
+        flipHorizontal: Boolean,
+        flipVertical: Boolean,
+        scale: Float,
+        panXNdc: Float,
+        panYNdc: Float,
+        fitScaleX: Float,
+        fitScaleY: Float,
+    ) = Unit
+
     fun dispose()
 
     /**