feat: handle transcription in real time

src-tauri/src/lib.rs

@@ -387,6 +387,35 @@ async fn transcribe_chunk(
     Ok(segments)
 }
 
+/// Get the next chunk of audio for real-time transcription.
+/// Returns the audio chunk and the new offset to use for the next call.
+#[tauri::command]
+async fn get_audio_chunk(
+    state: State<'_, AppState>,
+    last_offset: usize,
+) -> Result<(Vec<f32>, usize), String> {
+    let audio_guard = state.audio_capture.lock();
+    if let Some(ref capture) = *audio_guard {
+        Ok(capture.extract_chunk(last_offset))
+    } else {
+        Err("No active recording".to_string())
+    }
+}
+
+/// Get remaining audio without modifying the buffer (for final processing).
+#[tauri::command]
+async fn get_remaining_audio(
+    state: State<'_, AppState>,
+    last_offset: usize,
+) -> Result<Vec<f32>, String> {
+    let audio_guard = state.audio_capture.lock();
+    if let Some(ref capture) = *audio_guard {
+        Ok(capture.get_remaining_audio(last_offset))
+    } else {
+        Err("No active recording".to_string())
+    }
+}
+
 /// Generate a summary from a transcript.
 #[tauri::command]
 async fn summarize(
@@ -449,6 +478,8 @@ pub fn run() {
             start_recording,
             stop_recording,
             transcribe_chunk,
+            get_audio_chunk,
+            get_remaining_audio,
             summarize,
             get_backend_logs,
             check_ready,