fix:parser and ui

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(transui VERSION 0.1.0 LANGUAGES CXX)
+project(transui VERSION 0.1.1 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -11,7 +11,7 @@ pkg_check_modules(GSTREAMER REQUIRED IMPORTED_TARGET gstreamer-1.0)
 pkg_check_modules(SECRET REQUIRED IMPORTED_TARGET libsecret-1)
 pkg_check_modules(JSON_GLIB REQUIRED IMPORTED_TARGET json-glib-1.0)
 
-add_executable(transui src/main.cpp)
+add_executable(transui src/main.cpp src/transcript_cleaner.cpp)
 target_link_libraries(transui PRIVATE
   PkgConfig::GTK3
   PkgConfig::CURL
@@ -23,6 +23,16 @@ target_link_libraries(transui PRIVATE
 install(TARGETS transui RUNTIME DESTINATION bin)
 install(FILES data/io.github.transui.Transui.desktop DESTINATION share/applications)
 
+include(CTest)
+if(BUILD_TESTING)
+  add_executable(transcript_cleaner_test
+    tests/transcript_cleaner_test.cpp
+    src/transcript_cleaner.cpp
+  )
+  target_include_directories(transcript_cleaner_test PRIVATE src)
+  add_test(NAME transcript_cleaner COMMAND transcript_cleaner_test)
+endif()
+
 set(CPACK_GENERATOR "DEB")
 set(CPACK_PACKAGE_NAME "transui")
 set(CPACK_PACKAGE_CONTACT "Transui contributors")

android/app/build.gradle

@@ -10,8 +10,8 @@ android {
         applicationId 'io.github.transui.android'
         minSdk 26
         targetSdk 35
-        versionCode 1
-        versionName '0.1.0'
+        versionCode 2
+        versionName '0.1.1'
 
         testInstrumentationRunner 'android.test.InstrumentationTestRunner'
     }

android/app/src/main/AndroidManifest.xml

@@ -22,6 +22,17 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name=".SpeechRecognitionActivity"
+            android:excludeFromRecents="true"
+            android:exported="true"
+            android:theme="@style/RecognitionTheme">
+            <intent-filter>
+                <action android:name="android.speech.action.RECOGNIZE_SPEECH" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
         <service
             android:name=".TransuiRecognitionService"
             android:exported="true"
@@ -35,5 +46,18 @@
                 android:name="android.speech"
                 android:resource="@xml/recognition_service" />
         </service>
+
+        <service
+            android:name=".TransuiInputMethodService"
+            android:exported="true"
+            android:label="@string/voice_input"
+            android:permission="android.permission.BIND_INPUT_METHOD">
+            <intent-filter>
+                <action android:name="android.view.InputMethod" />
+            </intent-filter>
+            <meta-data
+                android:name="android.view.im"
+                android:resource="@xml/input_method" />
+        </service>
     </application>
 </manifest>

android/app/src/main/java/io/github/transui/android/AppConfig.java

@@ -5,16 +5,19 @@ final class AppConfig {
     final String model;
     final String apiKey;
     final String prompt;
+    final boolean pushToTalk;
 
     AppConfig(
             String endpoint,
             String model,
             String apiKey,
-            String prompt) {
+            String prompt,
+            boolean pushToTalk) {
         this.endpoint = endpoint;
         this.model = model;
         this.apiKey = apiKey;
         this.prompt = prompt;
+        this.pushToTalk = pushToTalk;
     }
 
     boolean hasUsableEndpoint() {

android/app/src/main/java/io/github/transui/android/ConfigRepository.java

@@ -20,7 +20,8 @@ final class ConfigRepository {
                 preferences.getString("remote_endpoint", ""),
                 preferences.getString("remote_model", ""),
                 decryptOrEmpty(preferences.getString("remote_key", "")),
-                preferences.getString("prompt", ""));
+                preferences.getString("prompt", ""),
+                preferences.getBoolean("push_to_talk", false));
     }
 
     void save(AppConfig config) throws GeneralSecurityException, IOException {
@@ -29,6 +30,7 @@ final class ConfigRepository {
                 .putString("remote_model", config.model)
                 .putString("remote_key", SecretStore.encrypt(config.apiKey))
                 .putString("prompt", config.prompt)
+                .putBoolean("push_to_talk", config.pushToTalk)
                 .apply();
     }
 

android/app/src/main/java/io/github/transui/android/MainActivity.java

@@ -10,6 +10,7 @@ import android.os.Bundle;
 import android.provider.Settings;
 import android.widget.Button;
 import android.widget.EditText;
+import android.widget.Switch;
 import android.widget.TextView;
 import android.widget.Toast;
 
@@ -25,6 +26,7 @@ public final class MainActivity extends Activity {
     private EditText model;
     private EditText apiKey;
     private EditText prompt;
+    private Switch pushToTalk;
     private TextView providerStatus;
     private Button microphone;
     private ConfigRepository repository;
@@ -59,6 +61,7 @@ public final class MainActivity extends Activity {
         model = findViewById(R.id.model);
         apiKey = findViewById(R.id.api_key);
         prompt = findViewById(R.id.prompt);
+        pushToTalk = findViewById(R.id.push_to_talk);
         providerStatus = findViewById(R.id.provider_status);
         microphone = findViewById(R.id.microphone);
     }
@@ -68,6 +71,7 @@ public final class MainActivity extends Activity {
         model.setText(config.model);
         apiKey.setText(config.apiKey);
         prompt.setText(config.prompt);
+        pushToTalk.setChecked(config.pushToTalk);
     }
 
     private boolean saveConfig() {
@@ -75,7 +79,8 @@ public final class MainActivity extends Activity {
                 value(endpoint).trim(),
                 value(model).trim(),
                 value(apiKey).trim(),
-                value(prompt));
+                value(prompt),
+                pushToTalk.isChecked());
         try {
             repository.save(config);
             Toast.makeText(this, R.string.settings_saved, Toast.LENGTH_SHORT).show();

android/app/src/main/java/io/github/transui/android/PushToTalkButton.java

@@ -0,0 +1,51 @@
+package io.github.transui.android;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.widget.Button;
+
+public final class PushToTalkButton extends Button {
+    private Runnable pressedAction;
+    private Runnable releasedAction;
+
+    public PushToTalkButton(Context context, AttributeSet attributes) {
+        super(context, attributes);
+    }
+
+    void setPushToTalkActions(Runnable pressedAction, Runnable releasedAction) {
+        this.pressedAction = pressedAction;
+        this.releasedAction = releasedAction;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        if (pressedAction == null || releasedAction == null) return super.onTouchEvent(event);
+        if (event.getAction() == MotionEvent.ACTION_DOWN) {
+            pressedAction.run();
+            setPressed(true);
+            return true;
+        }
+        if (event.getAction() == MotionEvent.ACTION_UP) {
+            releasedAction.run();
+            setPressed(false);
+            super.performClick();
+            return true;
+        }
+        if (event.getAction() == MotionEvent.ACTION_CANCEL) {
+            releasedAction.run();
+            setPressed(false);
+            return true;
+        }
+        return true;
+    }
+
+    @Override
+    public boolean performClick() {
+        if (pressedAction != null && releasedAction != null) {
+            pressedAction.run();
+            releasedAction.run();
+        }
+        return super.performClick();
+    }
+}

android/app/src/main/java/io/github/transui/android/SpeechRecognitionActivity.java

@@ -0,0 +1,205 @@
+package io.github.transui.android;
+
+import android.Manifest;
+import android.app.Activity;
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.SystemClock;
+import android.speech.RecognizerIntent;
+import android.speech.SpeechRecognizer;
+import android.widget.Button;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+import java.util.Locale;
+
+public final class SpeechRecognitionActivity extends Activity {
+    private static final int MICROPHONE_REQUEST = 2;
+
+    private final Handler handler = new Handler(Looper.getMainLooper());
+    private final Runnable updateElapsed = new Runnable() {
+        @Override
+        public void run() {
+            long seconds = (SystemClock.elapsedRealtime() - recordingStartedAt) / 1000;
+            elapsed.setText(String.format(Locale.ROOT, "%02d:%02d", seconds / 60, seconds % 60));
+            handler.postDelayed(this, 1000);
+        }
+    };
+
+    private TextView status;
+    private TextView elapsed;
+    private PushToTalkButton record;
+    private AppConfig config;
+    private VoiceRecordingController controller;
+    private long recordingStartedAt;
+    private boolean sessionActive;
+    private boolean completed;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setResult(RESULT_CANCELED);
+        setContentView(R.layout.recognition_panel);
+        status = findViewById(R.id.recognition_status);
+        elapsed = findViewById(R.id.recognition_elapsed);
+        record = findViewById(R.id.recognition_record);
+        findViewById(R.id.recognition_cancel).setOnClickListener(view -> cancelAndFinish());
+
+        config = new ConfigRepository(this).load();
+        if (!config.hasUsableEndpoint()) {
+            showUnavailable(R.string.configure_first);
+            return;
+        }
+        configureRecordButton();
+        ensurePermissionAndStart();
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] results) {
+        super.onRequestPermissionsResult(requestCode, permissions, results);
+        if (requestCode != MICROPHONE_REQUEST) return;
+        if (results.length > 0 && results[0] == PackageManager.PERMISSION_GRANTED) {
+            prepareForInput();
+        } else {
+            showUnavailable(R.string.recording_failed);
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        handler.removeCallbacks(updateElapsed);
+        if (!completed && controller != null) controller.cancel();
+        super.onDestroy();
+    }
+
+    private void configureRecordButton() {
+        if (config.pushToTalk) {
+            record.setText(R.string.hold_to_talk);
+            record.setPushToTalkActions(this::startRecording, this::stopRecording);
+        } else {
+            record.setText(R.string.stop);
+            record.setOnClickListener(view -> stopRecording());
+        }
+    }
+
+    private void ensurePermissionAndStart() {
+        if (checkSelfPermission(Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED) {
+            prepareForInput();
+        } else {
+            requestPermissions(new String[]{Manifest.permission.RECORD_AUDIO}, MICROPHONE_REQUEST);
+        }
+    }
+
+    private void prepareForInput() {
+        if (config.pushToTalk) {
+            status.setText(R.string.hold_to_talk);
+        } else {
+            startRecording();
+        }
+    }
+
+    private void startRecording() {
+        if (sessionActive || completed) return;
+        sessionActive = true;
+        controller = new VoiceRecordingController(this, config, new UiListener());
+        controller.start();
+    }
+
+    private void stopRecording() {
+        if (!sessionActive || controller == null) return;
+        record.setEnabled(false);
+        controller.stop();
+    }
+
+    private void showUnavailable(int message) {
+        status.setText(message);
+        elapsed.setText("");
+        record.setEnabled(false);
+    }
+
+    private void cancelAndFinish() {
+        completed = true;
+        if (controller != null) controller.cancel();
+        handler.removeCallbacks(updateElapsed);
+        setResult(RESULT_CANCELED);
+        finish();
+    }
+
+    private void finishWithResult(String text) {
+        completed = true;
+        handler.removeCallbacks(updateElapsed);
+        ArrayList<String> results = new ArrayList<>();
+        results.add(text);
+        Intent result = new Intent();
+        result.putStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS, results);
+        result.putExtra(RecognizerIntent.EXTRA_CONFIDENCE_SCORES, new float[]{-1.0f});
+        setResult(RESULT_OK, result);
+        sendPendingResult(result, results);
+        finish();
+    }
+
+    @SuppressWarnings("deprecation")
+    private void sendPendingResult(Intent result, ArrayList<String> results) {
+        PendingIntent pendingIntent;
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.TIRAMISU) {
+            pendingIntent = getIntent().getParcelableExtra(
+                    RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, PendingIntent.class);
+        } else {
+            pendingIntent = getIntent().getParcelableExtra(
+                    RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT);
+        }
+        if (pendingIntent == null) return;
+
+        Bundle supplied = getIntent().getBundleExtra(
+                RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT_BUNDLE);
+        if (supplied != null) {
+            supplied.putStringArrayList(RecognizerIntent.EXTRA_RESULTS, results);
+            supplied.putFloatArray(RecognizerIntent.EXTRA_CONFIDENCE_SCORES, new float[]{-1.0f});
+            result.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT_BUNDLE, supplied);
+        }
+        try {
+            pendingIntent.send(this, RESULT_OK, result);
+        } catch (PendingIntent.CanceledException ignored) {
+            // The requesting application has already gone away.
+        }
+    }
+
+    private final class UiListener implements VoiceRecordingController.Listener {
+        @Override
+        public void onRecording() {
+            runOnUiThread(() -> {
+                status.setText(R.string.listening);
+                recordingStartedAt = SystemClock.elapsedRealtime();
+                elapsed.setText(R.string.elapsed_zero);
+                handler.post(updateElapsed);
+            });
+        }
+
+        @Override
+        public void onTranscribing() {
+            runOnUiThread(() -> {
+                handler.removeCallbacks(updateElapsed);
+                status.setText(R.string.transcribing);
+                record.setEnabled(false);
+            });
+        }
+
+        @Override
+        public void onResult(String text) {
+            runOnUiThread(() -> finishWithResult(text));
+        }
+
+        @Override
+        public void onError(int errorCode) {
+            runOnUiThread(() -> showUnavailable(
+                    errorCode == SpeechRecognizer.ERROR_NETWORK
+                                    || errorCode == SpeechRecognizer.ERROR_SERVER
+                            ? R.string.transcription_failed
+                            : R.string.recording_failed));
+        }
+    }
+}

android/app/src/main/java/io/github/transui/android/TranscriptCleaner.java

@@ -2,15 +2,29 @@ package io.github.transui.android;
 
 final class TranscriptCleaner {
     private static final String QWEN_LANGUAGE_PREFIX = "language ";
-    private static final String QWEN_TEXT_MARKER = "<astext>";
+    private static final String[] QWEN_TEXT_MARKERS = {"<asr_text>", "<astext>"};
 
     private TranscriptCleaner() {}
 
     static String clean(String transcript) {
-        // Qwen3-ASR prefixes transcripts with the detected language and this marker.
-        if (!transcript.startsWith(QWEN_LANGUAGE_PREFIX)) return transcript;
-        int marker = transcript.indexOf(QWEN_TEXT_MARKER, QWEN_LANGUAGE_PREFIX.length());
-        if (marker < 0) return transcript;
-        return transcript.substring(marker + QWEN_TEXT_MARKER.length());
+        // Qwen3-ASR prefixes raw transcripts with the detected language and a text marker.
+        int prefix = 0;
+        if (!transcript.isEmpty() && transcript.charAt(0) == '\ufeff') prefix++;
+        while (prefix < transcript.length() && Character.isWhitespace(transcript.charAt(prefix))) {
+            prefix++;
+        }
+        if (!transcript.startsWith(QWEN_LANGUAGE_PREFIX, prefix)) return transcript;
+
+        int marker = -1;
+        String matchedMarker = null;
+        for (String candidate : QWEN_TEXT_MARKERS) {
+            int position = transcript.indexOf(candidate, prefix + QWEN_LANGUAGE_PREFIX.length());
+            if (position >= 0 && (marker < 0 || position < marker)) {
+                marker = position;
+                matchedMarker = candidate;
+            }
+        }
+        if (matchedMarker == null) return transcript;
+        return transcript.substring(marker + matchedMarker.length());
     }
 }

android/app/src/main/java/io/github/transui/android/TransuiInputMethodService.java

@@ -0,0 +1,146 @@
+package io.github.transui.android;
+
+import android.Manifest;
+import android.content.pm.PackageManager;
+import android.inputmethodservice.InputMethodService;
+import android.os.Build;
+import android.os.Handler;
+import android.os.Looper;
+import android.speech.SpeechRecognizer;
+import android.view.View;
+import android.view.inputmethod.InputConnection;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+
+public final class TransuiInputMethodService extends InputMethodService {
+    private final Handler handler = new Handler(Looper.getMainLooper());
+
+    private TextView status;
+    private PushToTalkButton record;
+    private AppConfig config;
+    private VoiceRecordingController controller;
+    private boolean sessionActive;
+
+    @Override
+    public View onCreateInputView() {
+        FrameLayout parent = new FrameLayout(this);
+        View view = getLayoutInflater().inflate(R.layout.voice_input, parent, false);
+        status = view.findViewById(R.id.voice_status);
+        record = view.findViewById(R.id.voice_record);
+        view.findViewById(R.id.voice_keyboard).setOnClickListener(button -> returnToKeyboard());
+        return view;
+    }
+
+    @Override
+    public void onStartInputView(android.view.inputmethod.EditorInfo info, boolean restarting) {
+        super.onStartInputView(info, restarting);
+        cancelSession();
+        config = new ConfigRepository(this).load();
+        configureRecordButton();
+        if (checkSelfPermission(Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
+            showUnavailable(R.string.recording_failed);
+        } else if (!config.hasUsableEndpoint()) {
+            showUnavailable(R.string.configure_first);
+        } else if (config.pushToTalk) {
+            status.setText(R.string.hold_to_talk);
+        } else {
+            startRecording();
+        }
+    }
+
+    @Override
+    public void onFinishInputView(boolean finishingInput) {
+        cancelSession();
+        super.onFinishInputView(finishingInput);
+    }
+
+    @Override
+    public void onDestroy() {
+        cancelSession();
+        super.onDestroy();
+    }
+
+    private void configureRecordButton() {
+        record.setEnabled(true);
+        record.setOnClickListener(null);
+        record.setPushToTalkActions(null, null);
+        if (config.pushToTalk) {
+            record.setText(R.string.hold_to_talk);
+            record.setPushToTalkActions(this::startRecording, this::stopRecording);
+        } else {
+            record.setText(R.string.stop);
+            record.setOnClickListener(view -> stopRecording());
+        }
+    }
+
+    private void startRecording() {
+        if (sessionActive) return;
+        sessionActive = true;
+        controller = new VoiceRecordingController(this, config, new ImeListener());
+        controller.start();
+    }
+
+    private void stopRecording() {
+        if (!sessionActive || controller == null) return;
+        record.setEnabled(false);
+        controller.stop();
+    }
+
+    private void cancelSession() {
+        if (controller != null) controller.cancel();
+        controller = null;
+        sessionActive = false;
+    }
+
+    private void showUnavailable(int message) {
+        status.setText(message);
+        record.setEnabled(false);
+    }
+
+    private void returnToKeyboard() {
+        cancelSession();
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+            switchToPreviousInputMethod();
+        } else {
+            requestHideSelf(0);
+        }
+    }
+
+    private final class ImeListener implements VoiceRecordingController.Listener {
+        @Override
+        public void onRecording() {
+            handler.post(() -> status.setText(R.string.listening));
+        }
+
+        @Override
+        public void onTranscribing() {
+            handler.post(() -> {
+                status.setText(R.string.transcribing);
+                record.setEnabled(false);
+            });
+        }
+
+        @Override
+        public void onResult(String text) {
+            handler.post(() -> {
+                InputConnection connection = getCurrentInputConnection();
+                if (connection == null) {
+                    showUnavailable(R.string.transcription_failed);
+                    return;
+                }
+                connection.commitText(text, 1);
+                returnToKeyboard();
+            });
+        }
+
+        @Override
+        public void onError(int errorCode) {
+            handler.post(() -> showUnavailable(
+                    errorCode == SpeechRecognizer.ERROR_NETWORK
+                                    || errorCode == SpeechRecognizer.ERROR_SERVER
+                            ? R.string.transcription_failed
+                            : R.string.recording_failed));
+        }
+    }
+}

android/app/src/main/java/io/github/transui/android/VoiceRecordingController.java

@@ -0,0 +1,158 @@
+package io.github.transui.android;
+
+import android.Manifest;
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.speech.SpeechRecognizer;
+import android.os.SystemClock;
+
+import java.io.ByteArrayOutputStream;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+final class VoiceRecordingController {
+    interface Listener {
+        void onRecording();
+
+        void onTranscribing();
+
+        void onResult(String text);
+
+        void onError(int errorCode);
+    }
+
+    private static final int SAMPLE_RATE = 16_000;
+    private static final long MAX_RECORDING_MS = 5 * 60_000;
+
+    private final Context context;
+    private final AppConfig config;
+    private final Listener listener;
+    private final ExecutorService executor = Executors.newSingleThreadExecutor();
+    private final AtomicBoolean stopRequested = new AtomicBoolean();
+    private final AtomicBoolean cancelled = new AtomicBoolean();
+    private final AtomicBoolean started = new AtomicBoolean();
+    private final TranscriptionClient client = new TranscriptionClient();
+
+    VoiceRecordingController(Context context, AppConfig config, Listener listener) {
+        this.context = context.getApplicationContext();
+        this.config = config;
+        this.listener = listener;
+    }
+
+    void start() {
+        if (!started.compareAndSet(false, true)) return;
+        executor.execute(this::recordAndTranscribe);
+    }
+
+    void stop() {
+        stopRequested.set(true);
+    }
+
+    void cancel() {
+        cancelled.set(true);
+        stopRequested.set(true);
+        client.cancel();
+    }
+
+    private void recordAndTranscribe() {
+        try {
+            byte[] pcm = captureAudio();
+            if (pcm == null || cancelled.get()) return;
+            listener.onTranscribing();
+            TranscriptionClient.Result result = client.transcribe(
+                    config, WavEncoder.encodePcm16Mono(pcm, SAMPLE_RATE));
+            if (cancelled.get()) return;
+            if (result.text != null) {
+                listener.onResult(result.text);
+            } else {
+                listener.onError(result.errorCode);
+            }
+        } finally {
+            executor.shutdown();
+        }
+    }
+
+    @SuppressLint("MissingPermission")
+    private byte[] captureAudio() {
+        if (context.checkSelfPermission(Manifest.permission.RECORD_AUDIO)
+                != PackageManager.PERMISSION_GRANTED) {
+            listener.onError(SpeechRecognizer.ERROR_INSUFFICIENT_PERMISSIONS);
+            return null;
+        }
+        int minimum = AudioRecord.getMinBufferSize(
+                SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
+        if (minimum <= 0) {
+            listener.onError(SpeechRecognizer.ERROR_AUDIO);
+            return null;
+        }
+
+        int bufferBytes = Math.max(minimum, 4096);
+        AudioRecord recorder;
+        try {
+            recorder = new AudioRecord.Builder()
+                    .setAudioSource(MediaRecorder.AudioSource.VOICE_RECOGNITION)
+                    .setAudioFormat(new AudioFormat.Builder()
+                            .setSampleRate(SAMPLE_RATE)
+                            .setChannelMask(AudioFormat.CHANNEL_IN_MONO)
+                            .setEncoding(AudioFormat.ENCODING_PCM_16BIT)
+                            .build())
+                    .setBufferSizeInBytes(bufferBytes)
+                    .build();
+        } catch (IllegalArgumentException | SecurityException error) {
+            listener.onError(SpeechRecognizer.ERROR_AUDIO);
+            return null;
+        }
+        if (recorder.getState() != AudioRecord.STATE_INITIALIZED) {
+            recorder.release();
+            listener.onError(SpeechRecognizer.ERROR_AUDIO);
+            return null;
+        }
+
+        ByteArrayOutputStream pcm = new ByteArrayOutputStream(SAMPLE_RATE * 8);
+        short[] samples = new short[bufferBytes / 2];
+        long startedAt = SystemClock.elapsedRealtime();
+        try {
+            recorder.startRecording();
+            listener.onRecording();
+            while (!cancelled.get()) {
+                int count = recorder.read(samples, 0, samples.length, AudioRecord.READ_BLOCKING);
+                if (count <= 0) {
+                    if (!cancelled.get()) listener.onError(SpeechRecognizer.ERROR_AUDIO);
+                    return null;
+                }
+                appendSamples(pcm, samples, count);
+                if (stopRequested.get()) break;
+                if (SystemClock.elapsedRealtime() - startedAt >= MAX_RECORDING_MS) break;
+            }
+        } catch (IllegalStateException | SecurityException error) {
+            if (!cancelled.get()) listener.onError(SpeechRecognizer.ERROR_AUDIO);
+            return null;
+        } finally {
+            try {
+                recorder.stop();
+            } catch (IllegalStateException ignored) {
+                // The recorder did not reach its recording state.
+            }
+            recorder.release();
+        }
+        if (cancelled.get()) return null;
+        if (pcm.size() == 0) {
+            listener.onError(SpeechRecognizer.ERROR_NO_MATCH);
+            return null;
+        }
+        return pcm.toByteArray();
+    }
+
+    private static void appendSamples(ByteArrayOutputStream output, short[] samples, int count) {
+        for (int index = 0; index < count; index++) {
+            int sample = samples[index];
+            output.write(sample & 0xff);
+            output.write((sample >>> 8) & 0xff);
+        }
+    }
+}

android/app/src/main/res/layout/activity_main.xml

@@ -84,6 +84,14 @@
             android:maxLines="3"
             android:singleLine="false" />
 
+        <Switch
+            android:id="@+id/push_to_talk"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="14dp"
+            android:text="@string/push_to_talk"
+            android:textColor="@color/ink" />
+
         <Button
             android:id="@+id/save"
             android:layout_width="match_parent"

android/app/src/main/res/layout/recognition_panel.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/panel"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/voice_input"
+        android:textColor="@color/ink"
+        android:textSize="21sp"
+        android:textStyle="bold" />
+
+    <View
+        android:layout_width="48dp"
+        android:layout_height="4dp"
+        android:layout_marginTop="12dp"
+        android:background="@color/signal" />
+
+    <TextView
+        android:id="@+id/recognition_status"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="22dp"
+        android:gravity="center"
+        android:text="@string/listening"
+        android:textColor="@color/ink"
+        android:textSize="18sp" />
+
+    <TextView
+        android:id="@+id/recognition_elapsed"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="6dp"
+        android:fontFamily="monospace"
+        android:gravity="center"
+        android:text="@string/elapsed_zero"
+        android:textColor="@color/slate"
+        android:textSize="14sp" />
+
+    <io.github.transui.android.PushToTalkButton
+        android:id="@+id/recognition_record"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="22dp"
+        android:text="@string/stop" />
+
+    <Button
+        android:id="@+id/recognition_cancel"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/cancel" />
+</LinearLayout>

android/app/src/main/res/layout/voice_input.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:paddingStart="20dp"
+    android:paddingTop="18dp"
+    android:paddingEnd="20dp"
+    android:paddingBottom="18dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_vertical"
+        android:orientation="horizontal">
+
+        <View
+            android:layout_width="5dp"
+            android:layout_height="40dp"
+            android:background="@color/signal" />
+
+        <TextView
+            android:id="@+id/voice_status"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:paddingStart="14dp"
+            android:paddingEnd="14dp"
+            android:text="@string/listening"
+            android:textColor="@color/ink"
+            android:textSize="17sp"
+            android:textStyle="bold" />
+    </LinearLayout>
+
+    <LinearLayout
+        style="?android:attr/buttonBarStyle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="14dp"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/voice_keyboard"
+            style="?android:attr/buttonBarButtonStyle"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/keyboard" />
+
+        <io.github.transui.android.PushToTalkButton
+            android:id="@+id/voice_record"
+            style="?android:attr/buttonBarButtonStyle"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="8dp"
+            android:layout_weight="1"
+            android:text="@string/stop" />
+    </LinearLayout>
+</LinearLayout>

android/app/src/main/res/values-night/styles.xml

@@ -8,4 +8,13 @@
         <item name="android:colorAccent">@color/signal</item>
         <item name="android:windowBackground">@color/mist</item>
     </style>
+
+    <style name="RecognitionTheme" parent="android:style/Theme.Material.Dialog.NoActionBar">
+        <item name="android:fontFamily">sans</item>
+        <item name="android:colorAccent">@color/signal</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowCloseOnTouchOutside">false</item>
+        <item name="android:windowMinWidthMajor">82%</item>
+        <item name="android:windowMinWidthMinor">82%</item>
+    </style>
 </resources>

android/app/src/main/res/values/strings.xml

@@ -11,6 +11,7 @@
     <string name="model">Model</string>
     <string name="api_key">API key</string>
     <string name="prompt">Prompt</string>
+    <string name="push_to_talk">Push to talk</string>
     <string name="save">Save settings</string>
     <string name="open_language_settings">Open language settings</string>
     <string name="allow_microphone">Allow microphone</string>
@@ -18,4 +19,15 @@
     <string name="settings_saved">Settings saved</string>
     <string name="settings_save_failed">Could not save API keys</string>
     <string name="language_settings_unavailable">Language settings are unavailable</string>
+    <string name="voice_input">Transui voice input</string>
+    <string name="listening">Listening</string>
+    <string name="hold_to_talk">Hold to talk</string>
+    <string name="transcribing">Transcribing</string>
+    <string name="stop">Stop</string>
+    <string name="cancel">Cancel</string>
+    <string name="keyboard">Keyboard</string>
+    <string name="recording_failed">Could not record</string>
+    <string name="transcription_failed">Could not transcribe</string>
+    <string name="configure_first">Configure a transcription endpoint first</string>
+    <string name="elapsed_zero">00:00</string>
 </resources>

android/app/src/main/res/values/styles.xml

@@ -28,4 +28,13 @@
         <item name="android:textStyle">bold</item>
         <item name="android:letterSpacing">0.12</item>
     </style>
+
+    <style name="RecognitionTheme" parent="android:style/Theme.Material.Light.Dialog.NoActionBar">
+        <item name="android:fontFamily">sans</item>
+        <item name="android:colorAccent">@color/signal</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowCloseOnTouchOutside">false</item>
+        <item name="android:windowMinWidthMajor">82%</item>
+        <item name="android:windowMinWidthMinor">82%</item>
+    </style>
 </resources>

android/app/src/main/res/xml/input_method.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<input-method xmlns:android="http://schemas.android.com/apk/res/android"
+    android:settingsActivity="io.github.transui.android.MainActivity"
+    android:supportsSwitchingToNextInputMethod="true">
+    <subtype
+        android:imeSubtypeLocale=""
+        android:imeSubtypeMode="voice"
+        android:isAuxiliary="true"
+        android:label="@string/voice_input"
+        android:overridesImplicitlyEnabledSubtype="true" />
+</input-method>

android/app/src/test/java/io/github/transui/android/TranscriptCleanerTest.java

@@ -6,10 +6,20 @@ import org.junit.Test;
 
 public final class TranscriptCleanerTest {
     @Test
-    public void removesQwenLanguagePrefix() {
-        assertEquals(
-                "What do you think?",
-                TranscriptCleaner.clean("language English<astext>What do you think?"));
+    public void removesObservedQwenLanguagePrefixes() {
+        assertEquals("What do you think?", TranscriptCleaner.clean(
+                "language English<astext>What do you think?"));
+        assertEquals("\u6765\u8ba9\u4f60\u53d1\u73b0\u4ed6\u4eec\u53ef\u80fd\u7684\u4e0d\u7684\u6807\u7b7e\u3002", TranscriptCleaner.clean(
+                "language Chinese<astext>\u6765\u8ba9\u4f60\u53d1\u73b0\u4ed6\u4eec\u53ef\u80fd\u7684\u4e0d\u7684\u6807\u7b7e\u3002"));
+        assertEquals("Ich habe keine Idee.", TranscriptCleaner.clean(
+                "language German<asr_text>Ich habe keine Idee."));
+        assertEquals("\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002", TranscriptCleaner.clean(
+                "language Japanese<asr_text>\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002"));
+    }
+
+    @Test
+    public void removesPrefixAfterLeadingWhitespace() {
+        assertEquals("Hello", TranscriptCleaner.clean(" \n\tlanguage English<asr_text>Hello"));
     }
 
     @Test

src/main.cpp

@@ -15,6 +15,8 @@
 #include <utility>
 #include <vector>
 
+#include "transcript_cleaner.h"
+
 namespace {
 
 constexpr const char* kAppId = "io.github.transui";
@@ -333,18 +335,6 @@ size_t curl_write(char* buffer, size_t size, size_t nmemb, void* data) {
   return size * nmemb;
 }
 
-std::string clean_transcript(std::string transcript) {
-  // Qwen3-ASR prefixes transcripts with the detected language and this marker.
-  constexpr const char* kLanguagePrefix = "language ";
-  constexpr const char* kTextMarker = "<astext>";
-  if (transcript.compare(0, std::strlen(kLanguagePrefix), kLanguagePrefix) != 0) {
-    return transcript;
-  }
-  const size_t marker = transcript.find(kTextMarker, std::strlen(kLanguagePrefix));
-  if (marker == std::string::npos) return transcript;
-  return transcript.substr(marker + std::strlen(kTextMarker));
-}
-
 bool transcription_request(const std::string& url, const std::string& key,
                            const std::string& model, const std::string& path,
                            const std::string& prompt,

src/transcript_cleaner.cpp

@@ -0,0 +1,33 @@
+#include "transcript_cleaner.h"
+
+#include <cctype>
+#include <string_view>
+
+std::string clean_transcript(std::string transcript) {
+  // Qwen3-ASR prefixes raw transcripts with the detected language and a text marker.
+  constexpr std::string_view kLanguagePrefix = "language ";
+  constexpr std::string_view kMarkers[] = {"<asr_text>", "<astext>"};
+
+  size_t prefix = 0;
+  if (transcript.compare(0, 3, "\xef\xbb\xbf") == 0) prefix = 3;
+  while (prefix < transcript.size() &&
+         std::isspace(static_cast<unsigned char>(transcript[prefix]))) {
+    prefix++;
+  }
+  if (transcript.compare(prefix, kLanguagePrefix.size(), kLanguagePrefix) != 0) {
+    return transcript;
+  }
+
+  size_t marker_position = std::string::npos;
+  std::string_view matched_marker;
+  for (std::string_view marker : kMarkers) {
+    const size_t position = transcript.find(marker, prefix + kLanguagePrefix.size());
+    if (position != std::string::npos &&
+        (marker_position == std::string::npos || position < marker_position)) {
+      marker_position = position;
+      matched_marker = marker;
+    }
+  }
+  if (marker_position == std::string::npos) return transcript;
+  return transcript.substr(marker_position + matched_marker.size());
+}

src/transcript_cleaner.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <string>
+
+std::string clean_transcript(std::string transcript);

tests/transcript_cleaner_test.cpp

@@ -0,0 +1,17 @@
+#include "transcript_cleaner.h"
+
+#include <cassert>
+
+int main() {
+  assert(clean_transcript("language English<astext>What do you think?") ==
+         "What do you think?");
+  assert(clean_transcript("language Chinese<astext>\xe6\x9d\xa5\xe8\xae\xa9\xe4\xbd\xa0\xe5\x8f\x91\xe7\x8e\xb0\xe6\xa0\x87\xe7\xad\xbe\xe3\x80\x82") ==
+         "\xe6\x9d\xa5\xe8\xae\xa9\xe4\xbd\xa0\xe5\x8f\x91\xe7\x8e\xb0\xe6\xa0\x87\xe7\xad\xbe\xe3\x80\x82");
+  assert(clean_transcript("language German<asr_text>Ich habe keine Idee.") ==
+         "Ich habe keine Idee.");
+  assert(clean_transcript("language Japanese<asr_text>\xe3\x81\x82\xe3\x82\x8a\xe3\x81\x8c\xe3\x81\xa8\xe3\x81\x86\xe3\x81\x94\xe3\x81\x96\xe3\x81\x84\xe3\x81\xbe\xe3\x81\x99\xe3\x80\x82") ==
+         "\xe3\x81\x82\xe3\x82\x8a\xe3\x81\x8c\xe3\x81\xa8\xe3\x81\x86\xe3\x81\x94\xe3\x81\x96\xe3\x81\x84\xe3\x81\xbe\xe3\x81\x99\xe3\x80\x82");
+  assert(clean_transcript(" \n\tlanguage English<asr_text>Hello") == "Hello");
+  assert(clean_transcript("Language matters.") == "Language matters.");
+  assert(clean_transcript("language English") == "language English");
+}