From eb0c8951196c637e44daf3c0617b131b997d5d2c Mon Sep 17 00:00:00 2001
From: Lena <lena@omega>
Date: Thu, 1 Jan 2026 00:00:00 +0000
Subject: scrcpy-android: mirror an Android device over wireless ADB

Native Java app for Android 12+ that mirrors another Android
device over wireless ADB, forwarding video, audio, touch input,
and clipboard. Bundles a pinned scrcpy-server.jar and the
vendored libadb-android stack. Supports h264/h265/av1 video and
raw/opus audio with in-app codec selection. No NDK, no Kotlin.
Includes JVM unit tests and a Docker-based emulator e2e rig.
---
 app/src/main/res/layout/device_row.xml |  28 ++++
 app/src/main/res/layout/main.xml       | 181 ++++++++++++++++++++
 app/src/main/res/layout/mirror.xml     |  67 ++++++++
 app/src/main/res/layout/settings.xml   | 294 +++++++++++++++++++++++++++++++++
 4 files changed, 570 insertions(+)
 create mode 100644 app/src/main/res/layout/device_row.xml
 create mode 100644 app/src/main/res/layout/main.xml
 create mode 100644 app/src/main/res/layout/mirror.xml
 create mode 100644 app/src/main/res/layout/settings.xml

(limited to 'app/src/main/res/layout')

diff --git a/app/src/main/res/layout/device_row.xml b/app/src/main/res/layout/device_row.xml
new file mode 100644
index 0000000..f06ab20
--- /dev/null
+++ b/app/src/main/res/layout/device_row.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Saved-device row: phone glyph + "host:port" label, with the platform
+     touch ripple. Bound by an ArrayAdapter via R.id.device_label. -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:minHeight="56dp"
+    android:paddingHorizontal="@dimen/space_sm"
+    android:paddingVertical="@dimen/space_md"
+    android:background="?android:attr/selectableItemBackground">
+
+    <ImageView
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:src="@drawable/ic_device"
+        android:contentDescription="@null"/>
+
+    <TextView
+        android:id="@+id/device_label"
+        style="@style/DeviceLabel"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginStart="@dimen/space_md"/>
+
+</LinearLayout>
diff --git a/app/src/main/res/layout/main.xml b/app/src/main/res/layout/main.xml
new file mode 100644
index 0000000..acd4a3c
--- /dev/null
+++ b/app/src/main/res/layout/main.xml
@@ -0,0 +1,181 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="@dimen/space_lg">
+
+    <!-- Header: app glyph + name, Settings on the right. -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:layout_marginBottom="@dimen/space_lg">
+
+        <ImageView
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:src="@drawable/ic_launcher_foreground"
+            android:scaleType="fitCenter"
+            android:contentDescription="@null"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginStart="@dimen/space_sm"
+            android:text="@string/app_name"
+            android:textColor="@color/on_surface"
+            android:textSize="22sp"
+            android:textStyle="bold"/>
+
+        <ImageButton
+            android:id="@+id/settings"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:src="@drawable/ic_settings"
+            android:scaleType="centerInside"
+            android:background="?android:attr/selectableItemBackgroundBorderless"
+            android:contentDescription="@string/settings"/>
+
+    </LinearLayout>
+
+    <!-- Pairing form. Fields are grouped and labelled by where their
+         value comes from on the target's Wireless debugging screen. -->
+    <LinearLayout
+        style="@style/Card"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            style="@style/SectionHeader"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pair_a_device"/>
+
+        <TextView
+            style="@style/Caption"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pair_help"/>
+
+        <TextView
+            style="@style/FieldLabel"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/label_host"/>
+
+        <EditText
+            android:id="@+id/host"
+            style="@style/Field"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/host_hint"
+            android:inputType="text"
+            android:autofillHints="postalAddress"/>
+
+        <TextView
+            style="@style/FieldLabel"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/label_pairing"/>
+
+        <TextView
+            style="@style/Caption"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/sub_pairing"/>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_marginTop="@dimen/space_xs">
+
+            <EditText
+                android:id="@+id/pair_port"
+                style="@style/Field"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:layout_marginEnd="@dimen/space_sm"
+                android:hint="@string/pair_port_hint"
+                android:inputType="number"
+                android:autofillHints="off"/>
+
+            <EditText
+                android:id="@+id/pair_code"
+                style="@style/Field"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:hint="@string/pair_code_hint"
+                android:inputType="numberPassword"
+                android:maxLength="6"
+                android:autofillHints="off"/>
+
+        </LinearLayout>
+
+        <TextView
+            style="@style/FieldLabel"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/label_connect"/>
+
+        <TextView
+            style="@style/Caption"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/sub_connect"/>
+
+        <EditText
+            android:id="@+id/connect_port"
+            style="@style/Field"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/space_xs"
+            android:hint="@string/connect_port_hint"
+            android:inputType="number"
+            android:autofillHints="off"/>
+
+        <Button
+            android:id="@+id/pair"
+            style="@style/Button.Primary"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/space_lg"
+            android:text="@string/pair_and_save"/>
+
+    </LinearLayout>
+
+    <TextView
+        style="@style/SectionHeader"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/saved_devices"/>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1">
+
+        <ListView
+            android:id="@+id/devices"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:divider="@color/stroke"
+            android:dividerHeight="1dp"/>
+
+        <TextView
+            android:id="@+id/devices_empty"
+            style="@style/Note"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_horizontal"
+            android:paddingTop="@dimen/space_xl"
+            android:text="@string/no_devices_yet"/>
+
+    </FrameLayout>
+
+</LinearLayout>
diff --git a/app/src/main/res/layout/mirror.xml b/app/src/main/res/layout/mirror.xml
new file mode 100644
index 0000000..cf24e11
--- /dev/null
+++ b/app/src/main/res/layout/mirror.xml
@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Release Mirror layout: SurfaceView for the video pipeline plus a
+     floating top status pill with Record and a Reconnect button (visible
+     only when the session is in DISCONNECTED state). The debug layout
+     under src/debug/res/layout/mirror.xml shadows this with a TextureView
+     and extra stats overlay used by the e2e screen capture. -->
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#000000">
+
+    <SurfaceView
+        android:id="@+id/surface"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"/>
+
+    <LinearLayout
+        android:id="@+id/status_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="top"
+        android:layout_margin="@dimen/space_sm"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:paddingHorizontal="@dimen/space_md"
+        android:paddingVertical="@dimen/space_sm"
+        android:background="@drawable/bg_status_pill">
+
+        <TextView
+            android:id="@+id/status_text"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="wrap_content"
+            android:textColor="#ffffff"
+            android:textSize="14sp"
+            android:fontFamily="monospace"
+            android:singleLine="true"
+            android:ellipsize="end"
+            android:text="@string/connecting"/>
+
+        <Button
+            android:id="@+id/record"
+            style="@style/Button.Secondary"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="@dimen/space_sm"
+            android:minHeight="0dp"
+            android:paddingHorizontal="@dimen/space_md"
+            android:paddingVertical="@dimen/space_xs"
+            android:text="@string/record"/>
+
+        <Button
+            android:id="@+id/reconnect"
+            style="@style/Button.Secondary"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="@dimen/space_sm"
+            android:minHeight="0dp"
+            android:paddingHorizontal="@dimen/space_md"
+            android:paddingVertical="@dimen/space_xs"
+            android:text="@string/reconnect"
+            android:visibility="gone"/>
+
+    </LinearLayout>
+
+</FrameLayout>
diff --git a/app/src/main/res/layout/settings.xml b/app/src/main/res/layout/settings.xml
new file mode 100644
index 0000000..5d4e450
--- /dev/null
+++ b/app/src/main/res/layout/settings.xml
@@ -0,0 +1,294 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="@dimen/space_lg">
+
+        <TextView
+            style="@style/Note"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingBottom="@dimen/space_lg"
+            android:text="@string/settings_apply_on_reconnect"/>
+
+        <LinearLayout
+            style="@style/Card"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                style="@style/SectionHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/video_codec"/>
+
+            <RadioGroup
+                android:id="@+id/video_codec"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <RadioButton
+                    android:id="@+id/video_h264"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="H.264 (default)"/>
+
+                <RadioButton
+                    android:id="@+id/video_h265"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="H.265"/>
+
+                <RadioButton
+                    android:id="@+id/video_av1"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="AV1 (requires target Android 14+)"/>
+
+            </RadioGroup>
+
+        </LinearLayout>
+
+        <LinearLayout
+            style="@style/Card"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                style="@style/SectionHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/audio_codec"/>
+
+            <RadioGroup
+                android:id="@+id/audio_codec"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <RadioButton
+                    android:id="@+id/audio_raw"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Raw PCM (1.5 Mbps, default)"/>
+
+                <RadioButton
+                    android:id="@+id/audio_opus"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Opus (~128 kbps)"/>
+
+            </RadioGroup>
+
+        </LinearLayout>
+
+        <LinearLayout
+            style="@style/Card"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                style="@style/SectionHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/max_size"/>
+
+            <RadioGroup
+                android:id="@+id/max_size"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <RadioButton
+                    android:id="@+id/max_size_0"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Original (default)"/>
+
+                <RadioButton
+                    android:id="@+id/max_size_480"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="480"/>
+
+                <RadioButton
+                    android:id="@+id/max_size_720"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="720"/>
+
+                <RadioButton
+                    android:id="@+id/max_size_1080"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="1080"/>
+
+                <RadioButton
+                    android:id="@+id/max_size_1440"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="1440"/>
+
+                <RadioButton
+                    android:id="@+id/max_size_2160"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="2160"/>
+
+            </RadioGroup>
+
+        </LinearLayout>
+
+        <LinearLayout
+            style="@style/Card"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                style="@style/SectionHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/video_bit_rate"/>
+
+            <RadioGroup
+                android:id="@+id/video_bit_rate"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <RadioButton
+                    android:id="@+id/bit_rate_1m"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="1 Mbps"/>
+
+                <RadioButton
+                    android:id="@+id/bit_rate_2m"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="2 Mbps"/>
+
+                <RadioButton
+                    android:id="@+id/bit_rate_4m"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="4 Mbps"/>
+
+                <RadioButton
+                    android:id="@+id/bit_rate_8m"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="8 Mbps (default)"/>
+
+                <RadioButton
+                    android:id="@+id/bit_rate_16m"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="16 Mbps"/>
+
+            </RadioGroup>
+
+        </LinearLayout>
+
+        <LinearLayout
+            style="@style/Card"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                style="@style/SectionHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/max_fps"/>
+
+            <RadioGroup
+                android:id="@+id/max_fps"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <RadioButton
+                    android:id="@+id/max_fps_0"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Unlimited (default)"/>
+
+                <RadioButton
+                    android:id="@+id/max_fps_30"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="30"/>
+
+                <RadioButton
+                    android:id="@+id/max_fps_60"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="60"/>
+
+                <RadioButton
+                    android:id="@+id/max_fps_90"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="90"/>
+
+                <RadioButton
+                    android:id="@+id/max_fps_120"
+                    style="@style/RadioOption"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="120"/>
+
+            </RadioGroup>
+
+        </LinearLayout>
+
+        <LinearLayout
+            style="@style/Card"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="0dp">
+
+            <TextView
+                style="@style/SectionHeader"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/display"/>
+
+            <CheckBox
+                android:id="@+id/show_status_bar"
+                style="@style/RadioOption"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/show_status_bar"/>
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+</ScrollView>
-- 
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