Files
alexei.dolgolyov 3846610042 On-demand audio visualizer capture + UI fixes
- Audio capture starts only when first client subscribes,
  stops when last client unsubscribes (saves CPU/battery)
- Add lifecycle lock to AudioAnalyzer for thread-safe start/stop
- Status badge uses local visualizer state instead of server flag
- Fix script name vertical text break on narrow screens
- Fix script grid minimum column width on small viewports

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-28 17:34:17 +03:00

381 lines
11 KiB
Python

"""Media control API endpoints."""
import asyncio
import logging
from fastapi import APIRouter, Depends, HTTPException, Query, WebSocket, WebSocketDisconnect
from fastapi import status
from fastapi.responses import Response
from ..auth import verify_token, verify_token_or_query
from ..config import settings
from ..models import MediaStatus, VolumeRequest, SeekRequest
from ..services import get_media_controller, get_current_album_art
from ..services.websocket_manager import ws_manager
logger = logging.getLogger(__name__)
router = APIRouter(prefix="/api/media", tags=["media"])
def _run_callback(callback_name: str) -> None:
"""Fire-and-forget a callback if configured. Failures are logged but don't block."""
if not settings.callbacks or callback_name not in settings.callbacks:
return
async def _execute():
from .scripts import _run_script
try:
callback = settings.callbacks[callback_name]
loop = asyncio.get_event_loop()
result = await loop.run_in_executor(
None,
lambda: _run_script(
command=callback.command,
timeout=callback.timeout,
shell=callback.shell,
working_dir=callback.working_dir,
),
)
if result["exit_code"] != 0:
logger.warning(
"Callback %s failed with exit code %s: %s",
callback_name,
result["exit_code"],
result["stderr"],
)
except Exception as e:
logger.error("Callback %s error: %s", callback_name, e)
asyncio.create_task(_execute())
@router.get("/status", response_model=MediaStatus)
async def get_media_status(_: str = Depends(verify_token)) -> MediaStatus:
"""Get current media playback status.
Returns:
Current playback state, media info, volume, etc.
"""
controller = get_media_controller()
return await controller.get_status()
@router.post("/play")
async def play(_: str = Depends(verify_token)) -> dict:
"""Resume or start playback.
Returns:
Success status
"""
controller = get_media_controller()
success = await controller.play()
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to start playback - no active media session",
)
_run_callback("on_play")
return {"success": True}
@router.post("/pause")
async def pause(_: str = Depends(verify_token)) -> dict:
"""Pause playback.
Returns:
Success status
"""
controller = get_media_controller()
success = await controller.pause()
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to pause - no active media session",
)
_run_callback("on_pause")
return {"success": True}
@router.post("/stop")
async def stop(_: str = Depends(verify_token)) -> dict:
"""Stop playback.
Returns:
Success status
"""
controller = get_media_controller()
success = await controller.stop()
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to stop - no active media session",
)
_run_callback("on_stop")
return {"success": True}
@router.post("/next")
async def next_track(_: str = Depends(verify_token)) -> dict:
"""Skip to next track.
Returns:
Success status
"""
controller = get_media_controller()
success = await controller.next_track()
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to skip - no active media session",
)
_run_callback("on_next")
return {"success": True}
@router.post("/previous")
async def previous_track(_: str = Depends(verify_token)) -> dict:
"""Go to previous track.
Returns:
Success status
"""
controller = get_media_controller()
success = await controller.previous_track()
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to go back - no active media session",
)
_run_callback("on_previous")
return {"success": True}
@router.post("/volume")
async def set_volume(
request: VolumeRequest, _: str = Depends(verify_token)
) -> dict:
"""Set the system volume.
Args:
request: Volume level (0-100)
Returns:
Success status with new volume level
"""
controller = get_media_controller()
success = await controller.set_volume(request.volume)
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to set volume",
)
_run_callback("on_volume")
return {"success": True, "volume": request.volume}
@router.post("/mute")
async def toggle_mute(_: str = Depends(verify_token)) -> dict:
"""Toggle mute state.
Returns:
Success status with new mute state
"""
controller = get_media_controller()
muted = await controller.toggle_mute()
_run_callback("on_mute")
return {"success": True, "muted": muted}
@router.post("/seek")
async def seek(request: SeekRequest, _: str = Depends(verify_token)) -> dict:
"""Seek to a position in the current track.
Args:
request: Position in seconds
Returns:
Success status
"""
controller = get_media_controller()
success = await controller.seek(request.position)
if not success:
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail="Failed to seek - no active media session or seek not supported",
)
_run_callback("on_seek")
return {"success": True, "position": request.position}
@router.post("/turn_on")
async def turn_on(_: str = Depends(verify_token)) -> dict:
"""Execute turn on callback if configured.
Returns:
Success status
"""
_run_callback("on_turn_on")
return {"success": True}
@router.post("/turn_off")
async def turn_off(_: str = Depends(verify_token)) -> dict:
"""Execute turn off callback if configured.
Returns:
Success status
"""
_run_callback("on_turn_off")
return {"success": True}
@router.post("/toggle")
async def toggle(_: str = Depends(verify_token)) -> dict:
"""Execute toggle callback if configured.
Returns:
Success status
"""
_run_callback("on_toggle")
return {"success": True}
@router.get("/artwork")
async def get_artwork(_: str = Depends(verify_token_or_query)) -> Response:
"""Get the current album artwork.
Returns:
The album art image as PNG/JPEG
"""
art_bytes = get_current_album_art()
if art_bytes is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND,
detail="No album artwork available",
)
# Try to detect image type from magic bytes
content_type = "image/png" # Default
if art_bytes[:3] == b"\xff\xd8\xff":
content_type = "image/jpeg"
elif art_bytes[:8] == b"\x89PNG\r\n\x1a\n":
content_type = "image/png"
elif art_bytes[:4] == b"RIFF" and art_bytes[8:12] == b"WEBP":
content_type = "image/webp"
return Response(content=art_bytes, media_type=content_type)
@router.get("/visualizer/status")
async def visualizer_status(_: str = Depends(verify_token)) -> dict:
"""Check if audio visualizer is available and running."""
from ..services.audio_analyzer import get_audio_analyzer
analyzer = get_audio_analyzer()
return {
"available": analyzer.available,
"running": analyzer.running,
"current_device": analyzer.current_device,
}
@router.get("/visualizer/devices")
async def visualizer_devices(_: str = Depends(verify_token)) -> list[dict[str, str]]:
"""List available loopback audio devices for the visualizer."""
from ..services.audio_analyzer import AudioAnalyzer
loop = asyncio.get_event_loop()
return await loop.run_in_executor(None, AudioAnalyzer.list_loopback_devices)
@router.post("/visualizer/device")
async def set_visualizer_device(
request: dict,
_: str = Depends(verify_token),
) -> dict:
"""Set the loopback audio device for the visualizer.
Body: {"device_name": "Device Name" | null}
Passing null resets to auto-detect.
"""
from ..services.audio_analyzer import get_audio_analyzer
device_name = request.get("device_name")
analyzer = get_audio_analyzer()
# set_device() handles stop/start internally if capture was running
success = analyzer.set_device(device_name)
return {
"success": success,
"current_device": analyzer.current_device,
"running": analyzer.running,
}
@router.websocket("/ws")
async def websocket_endpoint(
websocket: WebSocket,
token: str = Query(..., description="API authentication token"),
) -> None:
"""WebSocket endpoint for real-time media status updates.
Authentication is done via query parameter since WebSocket
doesn't support custom headers in the browser.
Messages sent to client:
- {"type": "status", "data": {...}} - Initial status on connect
- {"type": "status_update", "data": {...}} - Status changes
- {"type": "error", "message": "..."} - Error messages
Client can send:
- {"type": "ping"} - Keepalive, server responds with {"type": "pong"}
- {"type": "get_status"} - Request current status
"""
# Verify token
from ..auth import get_token_label, token_label_var
label = get_token_label(token) if token else None
if label is None:
await websocket.close(code=4001, reason="Invalid authentication token")
return
# Set label in context for logging
token_label_var.set(label)
await ws_manager.connect(websocket)
try:
while True:
# Wait for messages from client (for keepalive/ping)
data = await websocket.receive_json()
if data.get("type") == "ping":
await websocket.send_json({"type": "pong"})
elif data.get("type") == "get_status":
# Allow manual status request
controller = get_media_controller()
status_data = await controller.get_status()
await websocket.send_json({
"type": "status",
"data": status_data.model_dump(),
})
elif data.get("type") == "volume":
# Low-latency volume control via WebSocket
volume = data.get("volume")
if volume is not None:
controller = get_media_controller()
await controller.set_volume(int(volume))
elif data.get("type") == "enable_visualizer":
await ws_manager.subscribe_visualizer(websocket)
elif data.get("type") == "disable_visualizer":
await ws_manager.unsubscribe_visualizer(websocket)
except WebSocketDisconnect:
await ws_manager.disconnect(websocket)
except Exception as e:
logger.error("WebSocket error: %s", e)
await ws_manager.disconnect(websocket)