scrcpy/server/src/main/java/com/genymobile/scrcpy/Device.java

package com.genymobile.scrcpy;

import com.genymobile.scrcpy.wrappers.InputManager;
import com.genymobile.scrcpy.wrappers.ServiceManager;
import com.genymobile.scrcpy.wrappers.SurfaceControl;
import com.genymobile.scrcpy.wrappers.WindowManager;

import android.graphics.Rect;
import android.os.Build;
import android.os.IBinder;
import android.os.RemoteException;
import android.view.IRotationWatcher;
import android.view.InputEvent;

public final class Device {

    public static final int POWER_MODE_OFF = SurfaceControl.POWER_MODE_OFF;
    public static final int POWER_MODE_NORMAL = SurfaceControl.POWER_MODE_NORMAL;

    public interface RotationListener {
        void onRotationChanged(int rotation);
    }

    private final ServiceManager serviceManager = new ServiceManager();

    private ScreenInfo screenInfo;
    private RotationListener rotationListener;

    /**
     * Logical display identifier
     */
    private final int displayId;

    /**
     * The surface flinger layer stack associated with this logical display
     */
    private final int layerStack;

    /**
     * The FLAG_PRESENTATION from the DisplayInfo
     */
    private final boolean isPresentationDisplay;

    public Device(Options options) {
        displayId = options.getDisplayId();
        DisplayInfo displayInfo = serviceManager.getDisplayManager().getDisplayInfo(displayId);
        if (displayInfo == null) {
            int[] displayIds = serviceManager.getDisplayManager().getDisplayIds();
            throw new InvalidDisplayIdException(displayId, displayIds);
        }

        int displayInfoFlags = displayInfo.getFlags();

        screenInfo = ScreenInfo.computeScreenInfo(displayInfo, options.getCrop(), options.getMaxSize(), options.getLockedVideoOrientation());
        layerStack = displayInfo.getLayerStack();
        isPresentationDisplay = (displayInfoFlags & DisplayInfo.FLAG_PRESENTATION) != 0;

        registerRotationWatcher(new IRotationWatcher.Stub() {
            @Override
            public void onRotationChanged(int rotation) throws RemoteException {
                synchronized (Device.this) {
                    screenInfo = screenInfo.withDeviceRotation(rotation);

                    // notify
                    if (rotationListener != null) {
                        rotationListener.onRotationChanged(rotation);
                    }
                }
            }
        });

        if ((displayInfoFlags & DisplayInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS) == 0) {
            Ln.w("Display doesn't have FLAG_SUPPORTS_PROTECTED_BUFFERS flag, mirroring can be restricted");
        }

        if (!supportsInputEvents()) {
            Ln.w("Input events are not supported for displays with FLAG_PRESENTATION enabled for devices with API lower than 29");
        }
    }

    public synchronized ScreenInfo getScreenInfo() {
        return screenInfo;
    }

    public int getLayerStack() {
        return layerStack;
    }

    public Point getPhysicalPoint(Position position) {
        // it hides the field on purpose, to read it with a lock
        @SuppressWarnings("checkstyle:HiddenField")
        ScreenInfo screenInfo = getScreenInfo(); // read with synchronization

        // ignore the locked video orientation, the events will apply in coordinates considered in the physical device orientation
        Size unlockedVideoSize = screenInfo.getUnlockedVideoSize();

        int reverseVideoRotation = screenInfo.getReverseVideoRotation();
        // reverse the video rotation to apply the events
        Position devicePosition = position.rotate(reverseVideoRotation);

        Size clientVideoSize = devicePosition.getScreenSize();
        if (!unlockedVideoSize.equals(clientVideoSize)) {
            // The client sends a click relative to a video with wrong dimensions,
            // the device may have been rotated since the event was generated, so ignore the event
            return null;
        }
        Rect contentRect = screenInfo.getContentRect();
        Point point = devicePosition.getPoint();
        int convertedX = contentRect.left + point.getX() * contentRect.width() / unlockedVideoSize.getWidth();
        int convertedY = contentRect.top + point.getY() * contentRect.height() / unlockedVideoSize.getHeight();
        return new Point(convertedX, convertedY);
    }

    public static String getDeviceName() {
        return Build.MODEL;
    }

    public boolean supportsInputEvents() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            return true;
        }
        return !isPresentationDisplay;
    }

    public boolean injectInputEvent(InputEvent inputEvent, int mode) {
        if (!supportsInputEvents()) {
            throw new AssertionError("Could not inject input event if !supportsInputEvents()");
        }

        if (displayId != 0 && !InputManager.setDisplayId(inputEvent, displayId)) {
            return false;
        }

        return serviceManager.getInputManager().injectInputEvent(inputEvent, mode);
    }

    public boolean isScreenOn() {
        return serviceManager.getPowerManager().isScreenOn();
    }

    public void registerRotationWatcher(IRotationWatcher rotationWatcher) {
        serviceManager.getWindowManager().registerRotationWatcher(rotationWatcher);
    }

    public synchronized void setRotationListener(RotationListener rotationListener) {
        this.rotationListener = rotationListener;
    }

    public void expandNotificationPanel() {
        serviceManager.getStatusBarManager().expandNotificationsPanel();
    }

    public void collapsePanels() {
        serviceManager.getStatusBarManager().collapsePanels();
    }

    public String getClipboardText() {
        CharSequence s = serviceManager.getClipboardManager().getText();
        if (s == null) {
            return null;
        }
        return s.toString();
    }

    public void setClipboardText(String text) {
        boolean ok = serviceManager.getClipboardManager().setText(text);
        if (ok) {
            Ln.i("Device clipboard set");
        }
    }

    /**
     * @param mode one of the {@code SCREEN_POWER_MODE_*} constants
     */
    public void setScreenPowerMode(int mode) {
        IBinder d = SurfaceControl.getBuiltInDisplay();
        if (d == null) {
            Ln.e("Could not get built-in display");
            return;
        }
        boolean ok = SurfaceControl.setDisplayPowerMode(d, mode);
        if (ok) {
            Ln.i("Device screen turned " + (mode == Device.POWER_MODE_OFF ? "off" : "on"));
        }
    }

    /**
     * Disable auto-rotation (if enabled), set the screen rotation and re-enable auto-rotation (if it was enabled).
     */
    public void rotateDevice() {
        WindowManager wm = serviceManager.getWindowManager();

        boolean accelerometerRotation = !wm.isRotationFrozen();

        int currentRotation = wm.getRotation();
        int newRotation = (currentRotation & 1) ^ 1; // 0->1, 1->0, 2->1, 3->0
        String newRotationString = newRotation == 0 ? "portrait" : "landscape";

        Ln.i("Device rotation requested: " + newRotationString);
        wm.freezeRotation(newRotation);

        // restore auto-rotate if necessary
        if (accelerometerRotation) {
            wm.thawRotation();
        }
    }
}