Files
ha-nvidia-shield/custom_components/nvidia_shield/ha_adb_common/media_session.py
T
LeviandClaude Opus 4.7 0ad51879ae Initial release v0.1.0
Home Assistant custom integration for NVIDIA Shield TV that composes
the Android TV Remote, Jellyfin, smart plug, and receiver entities
into a single unified media player with ADB-based now-playing from
any app. Part of the Media Zone ecosystem.

Entities:
- media_player: power (with smart plug fallback), transport, input,
  volume routed to receiver, rich stream info overlay when Jellyfin
  is active
- sensor: DAG attributes and stream info
- button: Pair ADB

Config:
- Two-step flow: basic setup + optional ADB pairing on the Shield
- Configurable ADB port (default 5555)
- Pick an existing Jellyfin media_player entity — stream info is read
  from the HA Jellyfin integration's own DataUpdateCoordinator, so
  no server URL / API key / extra config needed here
- Privacy mode (adb_store_app_info=False) suppresses non-Jellyfin
  media details, showing only the app name

Ecosystem:
- Exposes media_dag_* attributes for ha-media-zone orchestration
- Exposes media_dag_running_apps and async_bring_to_foreground for
  the Media Zone card's app switcher

Shared ADB code lives in ltomes/ha-adb-common and is vendored at
custom_components/nvidia_shield/ha_adb_common/ for HACS installs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-17 17:04:30 -05:00

123 lines
3.8 KiB
Python

"""Android media session parsing.
Parses `dumpsys media_session` output from ADB to extract now-playing
information from any app using Android's MediaSession API.
"""
from dataclasses import dataclass
@dataclass
class MediaSessionInfo:
"""Parsed media session data from Android."""
title: str | None = None
artist: str | None = None
album: str | None = None
package: str | None = None
playing: bool = False
paused: bool = False
def parse_all_media_sessions(dump: str) -> list[MediaSessionInfo]:
"""Parse `dumpsys media_session` output for ALL active media sessions.
Returns a list of every active session that has metadata or a known
playback state, sorted: playing first, then paused, then others.
"""
if not dump:
return []
sessions: list[MediaSessionInfo] = []
current_pkg: str | None = None
in_active = False
current_state = 0 # 0=unknown, 2=paused, 3=playing
current_meta: MediaSessionInfo | None = None
for line in dump.split("\n"):
stripped = line.strip()
if "package=" in stripped:
pkg = stripped.split("package=", 1)
if len(pkg) > 1:
# New session block — save the previous one if valid
if in_active and current_meta:
current_meta.package = current_pkg
sessions.append(current_meta)
current_pkg = pkg[1].strip()
in_active = False
current_state = 0
current_meta = None
if "active=true" in stripped:
in_active = True
if in_active and "state=PlaybackState" in stripped:
if "state=3" in stripped:
current_state = 3
elif "state=2" in stripped:
current_state = 2
if in_active and "metadata: size=" in stripped and "description=" in stripped:
desc_start = stripped.find("description=")
if desc_start < 0:
continue
desc = stripped[desc_start + 12:]
parts = [p.strip() for p in desc.split(", ")]
info = MediaSessionInfo()
info.package = current_pkg
info.playing = current_state == 3
info.paused = current_state == 2
if len(parts) >= 1 and parts[0] not in ("null", ""):
info.title = parts[0]
if len(parts) >= 2 and parts[1] not in ("null", ""):
info.artist = parts[1]
if len(parts) >= 3 and parts[2] not in ("null", ""):
info.album = parts[2]
if info.title:
current_meta = info
# Don't forget the last session
if in_active and current_meta:
current_meta.package = current_pkg
sessions.append(current_meta)
# Sort: playing first, then paused, then others
def sort_key(s: MediaSessionInfo) -> int:
if s.playing:
return 0
if s.paused:
return 1
return 2
sessions.sort(key=sort_key)
return sessions
def parse_media_session(
dump: str, foreground_package: str | None = None
) -> MediaSessionInfo | None:
"""Parse `dumpsys media_session` output for the best active session.
Returns the best match from all active sessions:
1. The session whose package matches the foreground app (if provided)
2. The session that is currently playing (state=3)
3. The session that is paused (state=2)
4. Any active session with metadata
"""
sessions = parse_all_media_sessions(dump)
if not sessions:
return None
# Prefer the session matching the foreground app
if foreground_package:
for s in sessions:
if s.package == foreground_package:
return s
# Already sorted: playing > paused > other
return sessions[0]