Add a new method for text injection

On Android >= 7, inject text using the clipboard.

This is faster and allows to inject UTF-8.

README.md

@@ -289,6 +289,22 @@ From another terminal:
 scrcpy
 ```
 
+To avoid enabling remote port forwarding, you could force a forward connection
+instead (notice the `-L` instead of `-R`):
+
+```bash
+adb kill-server    # kill the local adb server on 5037
+ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# keep this open
+```
+
+From another terminal:
+
+```bash
+scrcpy --force-adb-forwrad
+```
+
+
 Like for wireless connections, it may be useful to reduce quality:
 
 ```

app/scrcpy.1

@@ -52,6 +52,10 @@ The list of possible display ids can be listed by "adb shell dumpsys display"
 
 Default is 0.
 
+.TP
+.B \-\-force\-adb\-forward
+Do not attempt to use "adb reverse" to connect to the device.
+
 .TP
 .B \-f, \-\-fullscreen
 Start in fullscreen.
@@ -146,7 +150,7 @@ Turn the device screen off immediately.
 
 .TP
 .B \-t, \-\-show\-touches
-Enable "show touches" on start, restore the initial value on exit..
+Enable "show touches" on start, restore the initial value on exit.
 
 It only shows physical touches (not clicks from scrcpy).
 

app/src/cli.c

@@ -54,6 +54,10 @@ scrcpy_print_usage(const char *arg0) {
         "\n"
         "        Default is 0.\n"
         "\n"
+        "    --force-adb-forward\n"
+        "        Do not attempt to use \"adb reverse\" to connect to the\n"
+        "        the device.\n"
+        "\n"
         "    -f, --fullscreen\n"
         "        Start in fullscreen.\n"
         "\n"
@@ -516,6 +520,7 @@ guess_record_format(const char *filename) {
 #define OPT_RENDER_DRIVER          1016
 #define OPT_NO_MIPMAPS             1017
 #define OPT_CODEC_OPTIONS          1018
+#define OPT_FORCE_ADB_FORWARD      1019
 
 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
@@ -525,6 +530,8 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"codec-options",          required_argument, NULL, OPT_CODEC_OPTIONS},
         {"crop",                   required_argument, NULL, OPT_CROP},
         {"display",                required_argument, NULL, OPT_DISPLAY_ID},
+        {"force-adb-forward",      no_argument,       NULL,
+                                                  OPT_FORCE_ADB_FORWARD},
         {"fullscreen",             no_argument,       NULL, 'f'},
         {"help",                   no_argument,       NULL, 'h'},
         {"lock-video-orientation", required_argument, NULL,
@@ -701,6 +708,9 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
             case OPT_CODEC_OPTIONS:
                 opts->codec_options = optarg;
                 break;
+            case OPT_FORCE_ADB_FORWARD:
+                opts->force_adb_forward = true;
+                break;
             default:
                 // getopt prints the error message on stderr
                 return false;

app/src/scrcpy.c

@@ -305,6 +305,7 @@ scrcpy(const struct scrcpy_options *options) {
         .show_touches = options->show_touches,
         .stay_awake = options->stay_awake,
         .codec_options = options->codec_options,
+        .force_adb_forward = options->force_adb_forward,
     };
     if (!server_start(&server, options->serial, &params)) {
         return false;

app/src/scrcpy.h

@@ -42,6 +42,7 @@ struct scrcpy_options {
     bool window_borderless;
     bool mipmaps;
     bool stay_awake;
+    bool force_adb_forward;
 };
 
 #define SCRCPY_OPTIONS_DEFAULT { \
@@ -79,6 +80,7 @@ struct scrcpy_options {
     .window_borderless = false, \
     .mipmaps = true, \
     .stay_awake = false, \
+    .force_adb_forward = false, \
 }
 
 bool

app/src/server.c

@@ -217,15 +217,20 @@ enable_tunnel_forward_any_port(struct server *server,
 }
 
 static bool
-enable_tunnel_any_port(struct server *server, struct port_range port_range) {
-    if (enable_tunnel_reverse_any_port(server, port_range)) {
-        return true;
+enable_tunnel_any_port(struct server *server, struct port_range port_range,
+                       bool force_adb_forward) {
+    if (!force_adb_forward) {
+        // Attempt to use "adb reverse"
+        if (enable_tunnel_reverse_any_port(server, port_range)) {
+            return true;
+        }
+
+        // if "adb reverse" does not work (e.g. over "adb connect"), it
+        // fallbacks to "adb forward", so the app socket is the client
+
+        LOGW("'adb reverse' failed, fallback to 'adb forward'");
     }
 
-    // if "adb reverse" does not work (e.g. over "adb connect"), it fallbacks to
-    // "adb forward", so the app socket is the client
-
-    LOGW("'adb reverse' failed, fallback to 'adb forward'");
     return enable_tunnel_forward_any_port(server, port_range);
 }
 
@@ -384,7 +389,8 @@ server_start(struct server *server, const char *serial,
         goto error1;
     }
 
-    if (!enable_tunnel_any_port(server, params->port_range)) {
+    if (!enable_tunnel_any_port(server, params->port_range,
+                                params->force_adb_forward)) {
         goto error1;
     }
 

app/src/server.h

@@ -56,6 +56,7 @@ struct server_params {
     uint16_t display_id;
     bool show_touches;
     bool stay_awake;
+    bool force_adb_forward;
 };
 
 // init default values

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

@@ -1,10 +1,7 @@
 package com.genymobile.scrcpy;
 
-import com.genymobile.scrcpy.wrappers.InputManager;
-
 import android.os.SystemClock;
 import android.view.InputDevice;
-import android.view.InputEvent;
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
@@ -50,7 +47,7 @@ public class Controller {
     public void control() throws IOException {
         // on start, power on the device
         if (!device.isScreenOn()) {
-            injectKeycode(KeyEvent.KEYCODE_POWER);
+            device.injectKeycode(KeyEvent.KEYCODE_POWER);
 
             // dirty hack
             // After POWER is injected, the device is powered on asynchronously.
@@ -110,11 +107,18 @@ public class Controller {
                 sender.pushClipboardText(clipboardText);
                 break;
             case ControlMessage.TYPE_SET_CLIPBOARD:
-                device.setClipboardText(msg.getText());
+                boolean setClipboardOk = device.setClipboardText(msg.getText());
+                if (setClipboardOk) {
+                    Ln.i("Device clipboard set");
+                }
                 break;
             case ControlMessage.TYPE_SET_SCREEN_POWER_MODE:
                 if (device.supportsInputEvents()) {
-                    device.setScreenPowerMode(msg.getAction());
+                    int mode = msg.getAction();
+                    boolean setPowerModeOk = device.setScreenPowerMode(mode);
+                    if (setPowerModeOk) {
+                        Ln.i("Device screen turned " + (mode == Device.POWER_MODE_OFF ? "off" : "on"));
+                    }
                 }
                 break;
             case ControlMessage.TYPE_ROTATE_DEVICE:
@@ -126,7 +130,7 @@ public class Controller {
     }
 
     private boolean injectKeycode(int action, int keycode, int metaState) {
-        return injectKeyEvent(action, keycode, 0, metaState);
+        return device.injectKeyEvent(action, keycode, 0, metaState);
     }
 
     private boolean injectChar(char c) {
@@ -137,7 +141,7 @@ public class Controller {
             return false;
         }
         for (KeyEvent event : events) {
-            if (!injectEvent(event)) {
+            if (!device.injectEvent(event)) {
                 return false;
             }
         }
@@ -145,6 +149,10 @@ public class Controller {
     }
 
     private int injectText(String text) {
+        if (device.injectTextPaste(text)) {
+            // The best method (fastest and UTF-8) worked!
+            return text.length();
+        }
         int successCount = 0;
         for (char c : text.toCharArray()) {
             if (!injectChar(c)) {
@@ -193,7 +201,7 @@ public class Controller {
         MotionEvent event = MotionEvent
                 .obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f, DEVICE_ID_VIRTUAL, 0,
                         InputDevice.SOURCE_TOUCHSCREEN, 0);
-        return injectEvent(event);
+        return device.injectEvent(event);
     }
 
     private boolean injectScroll(Position position, int hScroll, int vScroll) {
@@ -216,26 +224,11 @@ public class Controller {
         MotionEvent event = MotionEvent
                 .obtain(lastTouchDown, now, MotionEvent.ACTION_SCROLL, 1, pointerProperties, pointerCoords, 0, 0, 1f, 1f, DEVICE_ID_VIRTUAL, 0,
                         InputDevice.SOURCE_TOUCHSCREEN, 0);
-        return injectEvent(event);
-    }
-
-    private boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState) {
-        long now = SystemClock.uptimeMillis();
-        KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
-                InputDevice.SOURCE_KEYBOARD);
-        return injectEvent(event);
-    }
-
-    private boolean injectKeycode(int keyCode) {
-        return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0);
-    }
-
-    private boolean injectEvent(InputEvent event) {
-        return device.injectInputEvent(event, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+        return device.injectEvent(event);
     }
 
     private boolean pressBackOrTurnScreenOn() {
         int keycode = device.isScreenOn() ? KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_POWER;
-        return injectKeycode(keycode);
+        return device.injectKeycode(keycode);
     }
 }

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

@@ -10,8 +10,14 @@ import android.content.IOnPrimaryClipChangedListener;
 import android.graphics.Rect;
 import android.os.Build;
 import android.os.IBinder;
+import android.os.SystemClock;
 import android.view.IRotationWatcher;
+import android.view.InputDevice;
 import android.view.InputEvent;
+import android.view.KeyCharacterMap;
+import android.view.KeyEvent;
+
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public final class Device {
 
@@ -31,6 +37,7 @@ public final class Device {
     private ScreenInfo screenInfo;
     private RotationListener rotationListener;
     private ClipboardListener clipboardListener;
+    private final AtomicBoolean isSettingClipboard = new AtomicBoolean();
 
     /**
      * Logical display identifier
@@ -76,6 +83,10 @@ public final class Device {
             serviceManager.getClipboardManager().addPrimaryClipChangedListener(new IOnPrimaryClipChangedListener.Stub() {
                 @Override
                 public void dispatchPrimaryClipChanged() {
+                    if (isSettingClipboard.get()) {
+                        // This is a notification for the change we are currently applying, ignore it
+                        return;
+                    }
                     synchronized (Device.this) {
                         if (clipboardListener != null) {
                             String text = getClipboardText();
@@ -140,7 +151,7 @@ public final class Device {
         return supportsInputEvents;
     }
 
-    public boolean injectInputEvent(InputEvent inputEvent, int mode) {
+    public boolean injectEvent(InputEvent inputEvent, int mode) {
         if (!supportsInputEvents()) {
             throw new AssertionError("Could not inject input event if !supportsInputEvents()");
         }
@@ -152,6 +163,50 @@ public final class Device {
         return serviceManager.getInputManager().injectInputEvent(inputEvent, mode);
     }
 
+    public boolean injectEvent(InputEvent event) {
+        return injectEvent(event, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+    }
+
+    public boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState, int mode) {
+        long now = SystemClock.uptimeMillis();
+        KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
+                InputDevice.SOURCE_KEYBOARD);
+        return injectEvent(event, mode);
+    }
+
+    public boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState) {
+        return injectKeyEvent(action, keyCode, repeat, metaState, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+    }
+
+    public boolean injectKeycode(int keyCode, int mode) {
+        return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0, mode);
+    }
+
+    public boolean injectKeycode(int keyCode) {
+        return injectKeycode(keyCode, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+    }
+
+    public boolean injectTextPaste(String text) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+            return false;
+        }
+
+        // On Android >= 7, we can inject UTF-8 text as follow:
+        // - set the clipboard
+        // - inject the PASTE key event
+        // - restore the clipboard
+
+        String clipboardBackup = getClipboardText();
+        isSettingClipboard.set(true);
+
+        rawSetClipboardText(text);
+        boolean ok = injectKeycode(KeyEvent.KEYCODE_PASTE, InputManager.INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT);
+        rawSetClipboardText(clipboardBackup);
+
+        isSettingClipboard.set(false);
+        return ok;
+    }
+
     public boolean isScreenOn() {
         return serviceManager.getPowerManager().isScreenOn();
     }
@@ -180,26 +235,27 @@ public final class Device {
         return s.toString();
     }
 
-    public void setClipboardText(String text) {
-        boolean ok = serviceManager.getClipboardManager().setText(text);
-        if (ok) {
-            Ln.i("Device clipboard set");
-        }
+    private boolean rawSetClipboardText(String text) {
+        return serviceManager.getClipboardManager().setText(text);
+    }
+
+    public boolean setClipboardText(String text) {
+        isSettingClipboard.set(true);
+        boolean ok = rawSetClipboardText(text);
+        isSettingClipboard.set(false);
+        return ok;
     }
 
     /**
      * @param mode one of the {@code SCREEN_POWER_MODE_*} constants
      */
-    public void setScreenPowerMode(int mode) {
+    public boolean 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"));
+            return false;
         }
+        return SurfaceControl.setDisplayPowerMode(d, mode);
     }
 
     /**

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

@@ -15,7 +15,7 @@ public final class Ln {
         DEBUG, INFO, WARN, ERROR
     }
 
-    private static Level THRESHOLD;
+    private static Level threshold;
 
     private Ln() {
         // not instantiable
@@ -29,11 +29,11 @@ public final class Ln {
      * @param level the log level
      */
     public static void initLogLevel(Level level) {
-        THRESHOLD = level;
+        threshold = level;
     }
 
     public static boolean isEnabled(Level level) {
-        return level.ordinal() >= THRESHOLD.ordinal();
+        return level.ordinal() >= threshold.ordinal();
     }
 
     public static void d(String message) {

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

@@ -9,6 +9,7 @@ import android.os.Build;
 
 import java.io.IOException;
 import java.util.List;
+import java.util.Locale;
 
 public final class Server {
 
@@ -126,7 +127,7 @@ public final class Server {
 
         Options options = new Options();
 
-        Ln.Level level = Ln.Level.valueOf(args[1].toUpperCase());
+        Ln.Level level = Ln.Level.valueOf(args[1].toUpperCase(Locale.ENGLISH));
         options.setLogLevel(level);
 
         int maxSize = Integer.parseInt(args[2]) & ~7; // multiple of 8