Adding new option for falling back to clipboard pasting on character injection failures.

app/src/cli.c

@@ -26,6 +26,11 @@ scrcpy_print_usage(const char *arg0) {
         "        Unit suffixes are supported: 'K' (x1000) and 'M' (x1000000).\n"
         "        Default is %d.\n"
         "\n"
+        "    --char-inject-fallback\n"
+        "        Fallback to the clipboard (copy and paste) when non-supported\n"
+        "        non-ASCII characters are typed.\n"
+        "        Would override the device clipboard content when it happens.\n"
+        "\n"
         "    --codec-options key[:type]=value[,...]\n"
         "        Set a list of comma-separated key:type=value options for the\n"
         "        device encoder.\n"
@@ -651,12 +656,15 @@ guess_record_format(const char *filename) {
 #define OPT_DISABLE_SCREENSAVER    1020
 #define OPT_SHORTCUT_MOD           1021
 #define OPT_NO_KEY_REPEAT          1022
+#define OPT_CHAR_INJECT_FALLBACK   1023
 
 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
     static const struct option long_options[] = {
         {"always-on-top",          no_argument,       NULL, OPT_ALWAYS_ON_TOP},
         {"bit-rate",               required_argument, NULL, 'b'},
+        {"char-inject-fallback",   no_argument,       NULL,
+                                                  OPT_CHAR_INJECT_FALLBACK},
         {"codec-options",          required_argument, NULL, OPT_CODEC_OPTIONS},
         {"crop",                   required_argument, NULL, OPT_CROP},
         {"disable-screensaver",    no_argument,       NULL,
@@ -719,6 +727,9 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
             case OPT_CROP:
                 opts->crop = optarg;
                 break;
+            case OPT_CHAR_INJECT_FALLBACK:
+                opts->char_inject_fallback = true;
+                break;
             case OPT_DISPLAY_ID:
                 if (!parse_display_id(optarg, &opts->display_id)) {
                     return false;

app/src/scrcpy.c

@@ -313,6 +313,7 @@ scrcpy(const struct scrcpy_options *options) {
         .bit_rate = options->bit_rate,
         .max_fps = options->max_fps,
         .lock_video_orientation = options->lock_video_orientation,
+        .char_inject_fallback = options->char_inject_fallback,
         .control = options->control,
         .display_id = options->display_id,
         .show_touches = options->show_touches,

app/src/scrcpy.h

@@ -69,6 +69,7 @@ struct scrcpy_options {
     bool fullscreen;
     bool always_on_top;
     bool control;
+    bool char_inject_fallback;
     bool display;
     bool turn_screen_off;
     bool render_expired_frames;
@@ -112,6 +113,7 @@ struct scrcpy_options {
     .show_touches = false, \
     .fullscreen = false, \
     .always_on_top = false, \
+    .char_inject_fallback = false, \
     .control = true, \
     .display = true, \
     .turn_screen_off = false, \

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->char_inject_fallback ? "true" : "false",
     };
 #ifdef SERVER_DEBUGGER
     LOGI("Server debugger waiting for a client on device port "

app/src/server.h

@@ -53,6 +53,7 @@ struct server_params {
     uint32_t bit_rate;
     uint16_t max_fps;
     int8_t lock_video_orientation;
+    bool char_inject_fallback;
     bool control;
     uint16_t display_id;
     bool show_touches;

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

@@ -21,6 +21,7 @@ public class Controller {
     private final Device device;
     private final DesktopConnection connection;
     private final DeviceMessageSender sender;
+    private final boolean charInjectFallback;
 
     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, boolean charInjectFallback) {
         this.device = device;
         this.connection = connection;
+        this.charInjectFallback = charInjectFallback;
         initPointers();
         sender = new DeviceMessageSender(connection);
     }
@@ -163,8 +165,19 @@ private int injectText(String text) {
         int successCount = 0;
         for (char c : text.toCharArray()) {
             if (!injectChar(c)) {
-                Ln.w("Could not inject char u+" + String.format("%04x", (int) c));
-                continue;
+                if (this.charInjectFallback) {
+                    // Needs to handle the full remaining substring than only the failed character,
+                    // since the events may happen too fast. E.g. if we are to do it per character,
+                    // the expected input "ABCD" may lead to the actual value of "DDDD".
+                    String remaining = text.substring(successCount);
+                    setClipboard(remaining, true);
+                    successCount = text.length();
+                    break;
+                }
+                else {
+                    Ln.w("Could not inject char u+" + String.format("%04x", (int) c));
+                    continue;
+                }
             }
             successCount++;
         }

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 charInjectFallback;
 
     public Ln.Level getLogLevel() {
         return logLevel;
@@ -120,4 +121,12 @@ public String getCodecOptions() {
     public void setCodecOptions(String codecOptions) {
         this.codecOptions = codecOptions;
     }
+
+    public boolean getCharInjectFallback() {
+        return charInjectFallback;
+    }
+
+    public void setCharInjectFallback(boolean charInjectFallback) {
+        this.charInjectFallback = charInjectFallback;
+    }
 }

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.getCharInjectFallback());
 
                 // 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 charInjectFallback = Boolean.parseBoolean(args[14]);
+        options.setCharInjectFallback(charInjectFallback);
+
         return options;
     }