Using ADBKeyboard for injecting text

app/src/cli.c

@@ -651,6 +651,7 @@ guess_record_format(const char *filename) {
 #define OPT_DISABLE_SCREENSAVER    1020
 #define OPT_SHORTCUT_MOD           1021
 #define OPT_NO_KEY_REPEAT          1022
+#define OPT_USE_ADB_KEYBOARD       1026
 
 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
@@ -688,6 +689,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"show-touches",           no_argument,       NULL, 't'},
         {"stay-awake",             no_argument,       NULL, 'w'},
         {"turn-screen-off",        no_argument,       NULL, 'S'},
+        {"use-adb-keyboard",       no_argument,       NULL, OPT_USE_ADB_KEYBOARD},
         {"verbosity",              required_argument, NULL, 'V'},
         {"version",                no_argument,       NULL, 'v'},
         {"window-title",           required_argument, NULL, OPT_WINDOW_TITLE},
@@ -773,6 +775,9 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
             case 'S':
                 opts->turn_screen_off = true;
                 break;
+            case OPT_USE_ADB_KEYBOARD:
+                opts->use_adb_keyboard = true;
+                break;
             case 't':
                 opts->show_touches = true;
                 break;

app/src/scrcpy.c

@@ -319,6 +319,7 @@ scrcpy(const struct scrcpy_options *options) {
         .stay_awake = options->stay_awake,
         .codec_options = options->codec_options,
         .force_adb_forward = options->force_adb_forward,
+        .use_adb_keyboard = options->use_adb_keyboard,
     };
     if (!server_start(&server, options->serial, &params)) {
         return false;

app/src/scrcpy.h

@@ -79,6 +79,7 @@ struct scrcpy_options {
     bool force_adb_forward;
     bool disable_screensaver;
     bool forward_key_repeat;
+    bool use_adb_keyboard;
 };
 
 #define SCRCPY_OPTIONS_DEFAULT { \
@@ -123,6 +124,7 @@ struct scrcpy_options {
     .force_adb_forward = false, \
     .disable_screensaver = false, \
     .forward_key_repeat = true, \
+    .use_adb_keyboard = false, \
 }
 
 bool

app/src/server.c

@@ -294,6 +294,7 @@ execute_server(struct server *server, const struct server_params *params) {
         params->show_touches ? "true" : "false",
         params->stay_awake ? "true" : "false",
         params->codec_options ? params->codec_options : "-",
+        params->use_adb_keyboard ? "true" : "false",
     };
 #ifdef SERVER_DEBUGGER
     LOGI("Server debugger waiting for a client on device port "

app/src/server.h

@@ -58,6 +58,7 @@ struct server_params {
     bool show_touches;
     bool stay_awake;
     bool force_adb_forward;
+    bool use_adb_keyboard;
 };
 
 // init default values

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

@@ -20,6 +20,7 @@ public class Controller {
 
     private final Device device;
     private final DesktopConnection connection;
+    private final Options options;
     private final DeviceMessageSender sender;
 
     private final KeyCharacterMap charMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD);
@@ -31,9 +32,10 @@ public class Controller {
 
     private boolean keepPowerModeOff;
 
-    public Controller(Device device, DesktopConnection connection) {
+    public Controller(Device device, DesktopConnection connection, Options options) {
         this.device = device;
         this.connection = connection;
+        this.options = options;
         initPointers();
         sender = new DeviceMessageSender(connection);
     }
@@ -145,18 +147,28 @@ private boolean injectKeycode(int action, int keycode, int repeat, int metaState
     }
 
     private boolean injectChar(char c) {
-        String decomposed = KeyComposition.decompose(c);
-        char[] chars = decomposed != null ? decomposed.toCharArray() : new char[]{c};
-        KeyEvent[] events = charMap.getEvents(chars);
-        if (events == null) {
-            return false;
-        }
-        for (KeyEvent event : events) {
-            if (!device.injectEvent(event)) {
+        if (options.useADBKeyboard()) {
+            // Process latin keys the same way in order to provide same reaction speed.
+            try {
+                Process process = Runtime.getRuntime().exec("am broadcast -a ADB_INPUT_CHARS --eia chars " + String.valueOf((int) c));
+                return process.waitFor() == 0;
+            } catch (Throwable throwable) {
                 return false;
             }
+        } else {
+            String decomposed = KeyComposition.decompose(c);
+            char[] chars = decomposed != null ? decomposed.toCharArray() : new char[]{c};
+            KeyEvent[] events = charMap.getEvents(chars);
+            if (events == null) {
+                return false;
+            }
+            for (KeyEvent event : events) {
+                if (!device.injectEvent(event)) {
+                    return false;
+                }
+            }
+            return true;
         }
-        return true;
     }
 
     private int injectText(String text) {

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

@@ -16,6 +16,7 @@ public class Options {
     private boolean showTouches;
     private boolean stayAwake;
     private String codecOptions;
+    private boolean useADBKeyboard;
 
     public Ln.Level getLogLevel() {
         return logLevel;
@@ -120,4 +121,12 @@ public String getCodecOptions() {
     public void setCodecOptions(String codecOptions) {
         this.codecOptions = codecOptions;
     }
+
+    public boolean useADBKeyboard() {
+        return useADBKeyboard;
+    }
+
+    public void setUseADBKeyboard(boolean useADBKeyboard) {
+        this.useADBKeyboard = useADBKeyboard;
+    }
 }

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

@@ -57,7 +57,7 @@ private static void scrcpy(Options options) throws IOException {
             ScreenEncoder screenEncoder = new ScreenEncoder(options.getSendFrameMeta(), options.getBitRate(), options.getMaxFps(), codecOptions);
 
             if (options.getControl()) {
-                final Controller controller = new Controller(device, connection);
+                final Controller controller = new Controller(device, connection, options);
 
                 // asynchronous
                 startController(controller);
@@ -120,7 +120,7 @@ private static Options createOptions(String... args) {
                     "The server version (" + BuildConfig.VERSION_NAME + ") does not match the client " + "(" + clientVersion + ")");
         }
 
-        final int expectedParameters = 14;
+        final int expectedParameters = 15;
         if (args.length != expectedParameters) {
             throw new IllegalArgumentException("Expecting " + expectedParameters + " parameters");
         }
@@ -167,6 +167,9 @@ private static Options createOptions(String... args) {
         String codecOptions = args[13];
         options.setCodecOptions(codecOptions);
 
+        boolean useADBKeyboard = Boolean.parseBoolean(args[14]);
+        options.setUseADBKeyboard(useADBKeyboard);
+
         return options;
     }