/// <summary>
/// Fetch the spotify audio session.
/// </summary>
protected AudioSession? FetchAudioSession() {
// Fetch sessions
using var device = AudioDevice.GetDefaultAudioDevice(EDataFlow.eRender, ERole.eMultimedia);
using var sessionManager = device.GetSessionManager();
using var sessions = sessionManager.GetSessionCollection();
// Check main process
var sessionCount = sessions.Count;
using var sessionCache = new DisposableList<AudioSession>(sessionCount);
for (var i = 0; i < sessions.Count; i++) {
var session = sessions[i];
if (session.ProcessID == MainWindowProcess?.Id) {
Logger.LogInfo("SpotifyHook: Successfully fetched audio session using main window process.");
_audioSession = session;
return _audioSession;
} else {
// Store non-spotify sessions in disposable list to make sure that they the underlying COM objects are disposed.
sessionCache.Add(session);
}
}
Logger.LogWarning("SpotifyHook: Failed to fetch audio session using main window process.");
// Try fetch through other "spotify" processes.
var processes = FetchSpotifyProcesses();
// Transfer the found sessions into a dictionary to speed up the search by process id.
// (we do this here to avoid the overhead as most of the time we will find the session in the code above.)
using var sessionMap = new ValueDisposableDictionary<uint, AudioSession>();
foreach (var session in sessionCache)
sessionMap.Add(session.ProcessID, session);
sessionCache.Clear();
foreach (var process in processes) {
var processId = (uint)process.Id;
// skip main process as we already checked it
if (MainWindowProcess?.Id == processId)
continue;
if (sessionMap.TryGetValue(processId, out AudioSession session)) {
_audioSession = session;
Logger.LogInfo("SpotifyHook: Successfully fetched audio session using secondary spotify processes.");
// remove from map to avoid disposal
sessionMap.Remove(processId);
return _audioSession;
}
}
Logger.LogError("SpotifyHook: Failed to fetch audio session.");
return null;
}
