chore: commit all pending changes

routes/pager.py

@@ -96,7 +96,7 @@ def parse_multimon_output(line: str) -> dict[str, str] | None:
     return None
 
 
-def log_message(msg: dict[str, Any]) -> None:
+def log_message(msg: dict[str, Any]) -> None:
     """Log a message to file if logging is enabled."""
     if not app_module.logging_enabled:
         return
@@ -104,25 +104,39 @@ def log_message(msg: dict[str, Any]) -> None:
         with open(app_module.log_file_path, 'a') as f:
             timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
             f.write(f"{timestamp} | {msg.get('protocol', 'UNKNOWN')} | {msg.get('address', '')} | {msg.get('message', '')}\n")
-    except Exception as e:
-        logger.error(f"Failed to log message: {e}")
-
-
-def audio_relay_thread(
-    rtl_stdout,
-    multimon_stdin,
-    output_queue: queue.Queue,
-    stop_event: threading.Event,
-) -> None:
-    """Relay audio from rtl_fm to multimon-ng while computing signal levels.
-
-    Reads raw 16-bit LE PCM from *rtl_stdout*, writes every chunk straight
-    through to *multimon_stdin*, and every ~100 ms pushes an RMS / peak scope
-    event onto *output_queue*.
-    """
-    CHUNK = 4096  # bytes – 2048 samples at 16-bit mono
-    INTERVAL = 0.1  # seconds between scope updates
-    last_scope = time.monotonic()
+    except Exception as e:
+        logger.error(f"Failed to log message: {e}")
+
+
+def _encode_scope_waveform(samples: tuple[int, ...], window_size: int = 256) -> list[int]:
+    """Compress recent PCM samples into a signed 8-bit waveform for SSE."""
+    if not samples:
+        return []
+
+    window = samples[-window_size:] if len(samples) > window_size else samples
+    waveform: list[int] = []
+    for sample in window:
+        # Convert int16 PCM to int8 range for lightweight transport.
+        packed = int(round(sample / 256))
+        waveform.append(max(-127, min(127, packed)))
+    return waveform
+
+
+def audio_relay_thread(
+    rtl_stdout,
+    multimon_stdin,
+    output_queue: queue.Queue,
+    stop_event: threading.Event,
+) -> None:
+    """Relay audio from rtl_fm to multimon-ng while computing signal levels.
+
+    Reads raw 16-bit LE PCM from *rtl_stdout*, writes every chunk straight
+    through to *multimon_stdin*, and every ~100 ms pushes an RMS / peak scope
+    event plus a compact waveform sample onto *output_queue*.
+    """
+    CHUNK = 4096  # bytes – 2048 samples at 16-bit mono
+    INTERVAL = 0.1  # seconds between scope updates
+    last_scope = time.monotonic()
 
     try:
         while not stop_event.is_set():
@@ -146,15 +160,16 @@ def audio_relay_thread(
                     if n_samples == 0:
                         continue
                     samples = struct.unpack(f'<{n_samples}h', data[:n_samples * 2])
-                    peak = max(abs(s) for s in samples)
-                    rms = int(math.sqrt(sum(s * s for s in samples) / n_samples))
-                    output_queue.put_nowait({
-                        'type': 'scope',
-                        'rms': rms,
-                        'peak': peak,
-                    })
-                except (struct.error, ValueError, queue.Full):
-                    pass
+                    peak = max(abs(s) for s in samples)
+                    rms = int(math.sqrt(sum(s * s for s in samples) / n_samples))
+                    output_queue.put_nowait({
+                        'type': 'scope',
+                        'rms': rms,
+                        'peak': peak,
+                        'waveform': _encode_scope_waveform(samples),
+                    })
+                except (struct.error, ValueError, queue.Full):
+                    pass
     except Exception as e:
         logger.debug(f"Audio relay error: {e}")
     finally: