89f6a3cfe7
Accept a parameter to limit the video size. For instance, with "-m 960", the great side of the video will be scaled down to 960 (if necessary), while the other side will be scaled down so that the aspect ratio is preserved. Both dimensions must be a multiple of 8, so black bands might be added, and the mouse positions must be computed accordingly.
81 lines
2.9 KiB
Java
81 lines
2.9 KiB
Java
package com.genymobile.scrcpy;
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import android.net.LocalSocket;
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import android.net.LocalSocketAddress;
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.charset.StandardCharsets;
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public class DesktopConnection implements Closeable {
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private static final int DEVICE_NAME_FIELD_LENGTH = 64;
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private static final String SOCKET_NAME = "scrcpy";
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private final LocalSocket socket;
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private final InputStream inputStream;
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private final OutputStream outputStream;
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private final ControlEventReader reader = new ControlEventReader();
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private DesktopConnection(LocalSocket socket) throws IOException {
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this.socket = socket;
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inputStream = socket.getInputStream();
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outputStream = socket.getOutputStream();
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}
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private static LocalSocket connect(String abstractName) throws IOException {
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LocalSocket localSocket = new LocalSocket();
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localSocket.connect(new LocalSocketAddress(abstractName));
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return localSocket;
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}
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public static DesktopConnection open(Device device) throws IOException {
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LocalSocket socket = connect(SOCKET_NAME);
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DesktopConnection connection = new DesktopConnection(socket);
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Size videoSize = device.getScreenInfo().getVideoSize();
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connection.send(Device.getDeviceName(), videoSize.getWidth(), videoSize.getHeight());
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return connection;
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}
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public void close() throws IOException {
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socket.shutdownInput();
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socket.shutdownOutput();
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socket.close();
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}
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private void send(String deviceName, int width, int height) throws IOException {
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assert width < 0x10000 : "width may not be stored on 16 bits";
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assert height < 0x10000 : "height may not be stored on 16 bits";
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byte[] buffer = new byte[DEVICE_NAME_FIELD_LENGTH + 4];
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byte[] deviceNameBytes = deviceName.getBytes(StandardCharsets.UTF_8);
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int len = Math.min(DEVICE_NAME_FIELD_LENGTH - 1, deviceNameBytes.length);
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System.arraycopy(deviceNameBytes, 0, buffer, 0, len);
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// byte[] are always 0-initialized in java, no need to set '\0' explicitly
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buffer[DEVICE_NAME_FIELD_LENGTH] = (byte) (width >> 8);
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buffer[DEVICE_NAME_FIELD_LENGTH + 1] = (byte) width;
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buffer[DEVICE_NAME_FIELD_LENGTH + 2] = (byte) (height >> 8);
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buffer[DEVICE_NAME_FIELD_LENGTH + 3] = (byte) height;
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outputStream.write(buffer, 0, buffer.length);
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}
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public void sendVideoStream(byte[] videoStreamBuffer, int len) throws IOException {
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outputStream.write(videoStreamBuffer, 0, len);
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}
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public ControlEvent receiveControlEvent() throws IOException {
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ControlEvent event = reader.next();
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while (event == null) {
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reader.readFrom(inputStream);
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event = reader.next();
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}
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return event;
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}
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}
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