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.
---
 .../test/java/invalid/lena/scrcpy/WireTest.java    | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 app/src/test/java/invalid/lena/scrcpy/WireTest.java

(limited to 'app/src/test/java/invalid/lena/scrcpy/WireTest.java')

diff --git a/app/src/test/java/invalid/lena/scrcpy/WireTest.java b/app/src/test/java/invalid/lena/scrcpy/WireTest.java
new file mode 100644
index 0000000..9cee6c5
--- /dev/null
+++ b/app/src/test/java/invalid/lena/scrcpy/WireTest.java
@@ -0,0 +1,94 @@
+package invalid.lena.scrcpy;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.EOFException;
+
+public class WireTest {
+
+    @Test
+    public void be32RoundTrip() {
+        byte[] b = new byte[4];
+        int[] cases = {0, 1, -1, 0x7fffffff, 0x80000000, 0x12345678};
+        for (int v : cases) {
+            Wire.writeBe32(b, 0, v);
+            assertEquals(v, Wire.readBe32(b, 0));
+        }
+    }
+
+    @Test
+    public void be32Layout() {
+        byte[] b = new byte[4];
+        Wire.writeBe32(b, 0, 0x12345678);
+        assertArrayEquals(new byte[]{0x12, 0x34, 0x56, 0x78}, b);
+    }
+
+    @Test
+    public void be64RoundTrip() {
+        byte[] b = new byte[8];
+        long[] cases = {0L, 1L, -1L, Long.MAX_VALUE, Long.MIN_VALUE, 0x0123456789abcdefL};
+        for (long v : cases) {
+            Wire.writeBe64(b, 0, v);
+            assertEquals(v, Wire.readBe64(b, 0));
+        }
+    }
+
+    @Test
+    public void le32RoundTrip() {
+        byte[] b = new byte[4];
+        int[] cases = {0, 1, -1, 0x7fffffff, 0x80000000, 0x12345678};
+        for (int v : cases) {
+            Wire.writeLe32(b, 0, v);
+            assertEquals(v, Wire.readLe32(b, 0));
+        }
+    }
+
+    @Test
+    public void le32Layout() {
+        byte[] b = new byte[4];
+        Wire.writeLe32(b, 0, 0x12345678);
+        assertArrayEquals(new byte[]{0x78, 0x56, 0x34, 0x12}, b);
+    }
+
+    @Test
+    public void readFullyShortStreamThrows() throws Exception {
+        ByteArrayInputStream in = new ByteArrayInputStream(new byte[3]);
+        byte[] buf = new byte[8];
+        try {
+            Wire.readFully(in, buf);
+            fail("expected EOFException");
+        } catch (EOFException ignored) {
+            // expected
+        }
+    }
+
+    @Test
+    public void fourccConstantsMatchScrcpy() {
+        // Big-endian uint32 of the 4-char ASCII tag, NUL-padded on the LEFT
+        // for short names (raw, aac) - mirrors AudioCodec / VideoCodec.
+        assertEquals(0x68_32_36_34, Wire.CODEC_H264);  // "h264"
+        assertEquals(0x68_32_36_35, Wire.CODEC_H265);  // "h265"
+        assertEquals(0x61_76_30_31, Wire.CODEC_AV1);   // "av01"
+        assertEquals(0x6f_70_75_73, Wire.CODEC_OPUS);  // "opus"
+        assertEquals(0x66_6c_61_63, Wire.CODEC_FLAC);  // "flac"
+        assertEquals(0x00_61_61_63, Wire.CODEC_AAC);   // "\0aac"
+        assertEquals(0x00_72_61_77, Wire.CODEC_RAW);   // "\0raw"
+    }
+
+    @Test
+    public void fourccName() {
+        assertEquals("h264", Wire.fourccName(Wire.CODEC_H264));
+        assertEquals("opus", Wire.fourccName(Wire.CODEC_OPUS));
+    }
+
+    @Test
+    public void fourccNameTrimsLeadingNuls() {
+        assertEquals("raw", Wire.fourccName(Wire.CODEC_RAW));
+        assertEquals("aac", Wire.fourccName(Wire.CODEC_AAC));
+    }
+}
-- 
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