Convert server to an Android project

To simplify the device server-side build, use gradle to create an APK, even if we use it as a simple jar, by running its main() method.
2018-01-30 12:01:36 +01:00
parent 89f6a3cfe7
commit b67907e24e
36 changed files with 390 additions and 121 deletions
@@ -0,0 +1,80 @@
+package com.genymobile.scrcpy;
+
+import android.net.LocalSocket;
+import android.net.LocalSocketAddress;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
+
+public class DesktopConnection implements Closeable {
+
+    private static final int DEVICE_NAME_FIELD_LENGTH = 64;
+
+    private static final String SOCKET_NAME = "scrcpy";
+
+    private final LocalSocket socket;
+    private final InputStream inputStream;
+    private final OutputStream outputStream;
+
+    private final ControlEventReader reader = new ControlEventReader();
+
+    private DesktopConnection(LocalSocket socket) throws IOException {
+        this.socket = socket;
+        inputStream = socket.getInputStream();
+        outputStream = socket.getOutputStream();
+    }
+
+    private static LocalSocket connect(String abstractName) throws IOException {
+        LocalSocket localSocket = new LocalSocket();
+        localSocket.connect(new LocalSocketAddress(abstractName));
+        return localSocket;
+    }
+
+    public static DesktopConnection open(Device device) throws IOException {
+        LocalSocket socket = connect(SOCKET_NAME);
+
+        DesktopConnection connection = new DesktopConnection(socket);
+        Size videoSize = device.getScreenInfo().getVideoSize();
+        connection.send(Device.getDeviceName(), videoSize.getWidth(), videoSize.getHeight());
+        return connection;
+    }
+
+    public void close() throws IOException {
+        socket.shutdownInput();
+        socket.shutdownOutput();
+        socket.close();
+    }
+
+    private void send(String deviceName, int width, int height) throws IOException {
+        assert width < 0x10000 : "width may not be stored on 16 bits";
+        assert height < 0x10000 : "height may not be stored on 16 bits";
+        byte[] buffer = new byte[DEVICE_NAME_FIELD_LENGTH + 4];
+
+        byte[] deviceNameBytes = deviceName.getBytes(StandardCharsets.UTF_8);
+        int len = Math.min(DEVICE_NAME_FIELD_LENGTH - 1, deviceNameBytes.length);
+        System.arraycopy(deviceNameBytes, 0, buffer, 0, len);
+        // byte[] are always 0-initialized in java, no need to set '\0' explicitly
+
+        buffer[DEVICE_NAME_FIELD_LENGTH] = (byte) (width >> 8);
+        buffer[DEVICE_NAME_FIELD_LENGTH + 1] = (byte) width;
+        buffer[DEVICE_NAME_FIELD_LENGTH + 2] = (byte) (height >> 8);
+        buffer[DEVICE_NAME_FIELD_LENGTH + 3] = (byte) height;
+        outputStream.write(buffer, 0, buffer.length);
+    }
+
+    public void sendVideoStream(byte[] videoStreamBuffer, int len) throws IOException {
+        outputStream.write(videoStreamBuffer, 0, len);
+    }
+
+    public ControlEvent receiveControlEvent() throws IOException {
+        ControlEvent event = reader.next();
+        while (event == null) {
+            reader.readFrom(inputStream);
+            event = reader.next();
+        }
+        return event;
+    }
+}