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168 lines
7.6 KiB
C#
168 lines
7.6 KiB
C#
#nullable disable
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using System;
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using System.Threading;
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using MediaBrowser.Controller.Session;
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using MediaBrowser.Controller.SyncPlay.PlaybackRequests;
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using MediaBrowser.Model.SyncPlay;
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using Microsoft.Extensions.Logging;
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namespace MediaBrowser.Controller.SyncPlay.GroupStates
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{
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/// <summary>
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/// Class PausedGroupState.
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/// </summary>
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/// <remarks>
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/// Class is not thread-safe, external locking is required when accessing methods.
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/// </remarks>
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public class PausedGroupState : AbstractGroupState
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{
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/// <summary>
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/// The logger.
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/// </summary>
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private readonly ILogger<PausedGroupState> _logger;
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/// <summary>
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/// Initializes a new instance of the <see cref="PausedGroupState"/> class.
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/// </summary>
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/// <param name="loggerFactory">Instance of the <see cref="ILoggerFactory"/> interface.</param>
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public PausedGroupState(ILoggerFactory loggerFactory)
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: base(loggerFactory)
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{
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_logger = LoggerFactory.CreateLogger<PausedGroupState>();
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}
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/// <inheritdoc />
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public override GroupStateType Type { get; } = GroupStateType.Paused;
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/// <inheritdoc />
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public override void SessionJoined(IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Wait for session to be ready.
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var waitingState = new WaitingGroupState(LoggerFactory);
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context.SetState(waitingState);
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waitingState.SessionJoined(context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void SessionLeaving(IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Do nothing.
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}
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/// <inheritdoc />
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public override void HandleRequest(PlayGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var waitingState = new WaitingGroupState(LoggerFactory);
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context.SetState(waitingState);
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waitingState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void HandleRequest(UnpauseGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var playingState = new PlayingGroupState(LoggerFactory);
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context.SetState(playingState);
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playingState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void HandleRequest(PauseGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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if (!prevState.Equals(Type))
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{
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// Pause group and compute the media playback position.
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var currentTime = DateTime.UtcNow;
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var elapsedTime = currentTime - context.LastActivity;
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context.LastActivity = currentTime;
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// Elapsed time is negative if event happens
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// during the delay added to account for latency.
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// In this phase clients haven't started the playback yet.
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// In other words, LastActivity is in the future,
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// when playback unpause is supposed to happen.
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// Seek only if playback actually started.
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context.PositionTicks += Math.Max(elapsedTime.Ticks, 0);
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var command = context.NewSyncPlayCommand(SendCommandType.Pause);
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context.SendCommand(session, SyncPlayBroadcastType.AllGroup, command, cancellationToken);
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// Notify relevant state change event.
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SendGroupStateUpdate(context, request, session, cancellationToken);
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}
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else
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{
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// Client got lost, sending current state.
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var command = context.NewSyncPlayCommand(SendCommandType.Pause);
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context.SendCommand(session, SyncPlayBroadcastType.CurrentSession, command, cancellationToken);
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}
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}
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/// <inheritdoc />
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public override void HandleRequest(StopGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var idleState = new IdleGroupState(LoggerFactory);
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context.SetState(idleState);
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idleState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void HandleRequest(SeekGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var waitingState = new WaitingGroupState(LoggerFactory);
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context.SetState(waitingState);
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waitingState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void HandleRequest(BufferGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var waitingState = new WaitingGroupState(LoggerFactory);
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context.SetState(waitingState);
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waitingState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void HandleRequest(ReadyGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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if (prevState.Equals(Type))
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{
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// Client got lost, sending current state.
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var command = context.NewSyncPlayCommand(SendCommandType.Pause);
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context.SendCommand(session, SyncPlayBroadcastType.CurrentSession, command, cancellationToken);
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}
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else if (prevState.Equals(GroupStateType.Waiting))
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{
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// Sending current state to all clients.
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var command = context.NewSyncPlayCommand(SendCommandType.Pause);
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context.SendCommand(session, SyncPlayBroadcastType.AllGroup, command, cancellationToken);
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// Notify relevant state change event.
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SendGroupStateUpdate(context, request, session, cancellationToken);
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}
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}
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/// <inheritdoc />
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public override void HandleRequest(NextItemGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var waitingState = new WaitingGroupState(LoggerFactory);
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context.SetState(waitingState);
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waitingState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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/// <inheritdoc />
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public override void HandleRequest(PreviousItemGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
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{
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// Change state.
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var waitingState = new WaitingGroupState(LoggerFactory);
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context.SetState(waitingState);
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waitingState.HandleRequest(request, context, Type, session, cancellationToken);
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}
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}
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}
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