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Pretty good audio sync if I do say so myself :)

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This commit is contained in:
watsonb8 2019-11-29 22:04:55 -05:00
parent 8bea1d03da
commit 41e853b1c6
7 changed files with 25 additions and 14 deletions
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2
Aurora/Design/Components/MemberList/MemberList.xaml.cs
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@ -10,7 +10,7 @@ namespace Aurora.Design.Components.MemberList
public partial class MemberList : ContentView
{
private static ObservableCollection<PartyMember> _newSource;
private static NotifyCollectionChangedEventHandler _collectionChangedHandler;
// private static NotifyCollectionChangedEventHandler _collectionChangedHandler;
public MemberList()
{
InitializeComponent();

3
Aurora/Design/Views/Party/PartyViewModel.cs
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@ -172,9 +172,10 @@ namespace Aurora.Design.Views.Party
/// Called by framework when view becomes inactive
/// </summary>
/// <returns></returns>
public override async Task OnInactive()
public override Task OnInactive()
{
_client.StopEvents();
return Task.FromResult<object>(null);
}
/// <summary>

4
Aurora/Proto/sync.proto
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@ -10,6 +10,6 @@ service RemoteSyncService {
}
message Sync {
int64 serverTime = 1;
float trackTime = 2;
int64 serverTimeTicks = 1;
float trackPosition= 2;
}

3
Aurora/RemoteImpl/RemoteEventImpl.cs
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@ -23,7 +23,7 @@ namespace Aurora.RemoteImpl
/// <param name="responseStream">The response stream</param>
/// <param name="context">gRPC client context</param>
/// <returns></returns>
public async override Task GetEvents(EventsRequest request,
public override Task GetEvents(EventsRequest request,
Grpc.Core.IServerStreamWriter<BaseEvent> responseStream,
Grpc.Core.ServerCallContext context)
{
@ -41,6 +41,7 @@ namespace Aurora.RemoteImpl
EventManager.Instance.AddEventHandler(callback, Combine(new string[] { context.Peer, request.ClientId }));
are.WaitOne();
return Task.FromResult<object>(null);
}
/// <summary>

5
Aurora/RemoteImpl/RemoteSyncImpl.cs
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@ -33,13 +33,12 @@ namespace Aurora.RemoteImpl
while (continueSync)
{
Utils.Time networkTime = Utils.TimeUtils.GetNetworkTime();
float length = PlayerService.Instance.CurrentMediaLength;
Sync sync = new Sync()
{
TrackTime = length * PlayerService.Instance.CurrentMediaPosition,
ServerTime = networkTime.DateTime.Ticks + networkTime.Elapsed.Ticks
TrackPosition = PlayerService.Instance.CurrentMediaPosition,
ServerTimeTicks = Utils.TimeUtils.GetNetworkTime().DateTime.Ticks
};
await responseStream.WriteAsync(sync);
Console.WriteLine("Sent Sync");

19
Aurora/Services/PlayerService/PlayerService.cs
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@ -10,8 +10,10 @@ using LibVLCSharp.Shared;
namespace Aurora.Services.PlayerService
{
public class PlayerService : BaseService<PlayerService>
{
private const long _ticksPerMillisecond = 10000;
private BaseMedia _currentMedia;
private MediaPlayer _mediaPlayer;
private LibVLC _libvlc;
@ -134,10 +136,10 @@ namespace Aurora.Services.PlayerService
DateTime localTime = time.DateTime;
//Get offset - elapsed time converted to milliseconds
float offset = (((localTime.Ticks - sync.ServerTime) * 100) / (1000 * 1000));
float length = CurrentMediaLength;
float newPosition = (sync.TrackTime + (offset + time.Elapsed.Milliseconds)) / length;
float offset = (localTime.Ticks - sync.ServerTimeTicks) * _ticksPerMillisecond;
float newPosition = (sync.TrackPosition + offset);
//Adjust position if greater than 10 percent difference
float oldPosition = _mediaPlayer.Position;
@ -145,7 +147,15 @@ namespace Aurora.Services.PlayerService
newPosition - oldPosition < -0.001)
{
_mediaPlayer.Position = newPosition;
Console.WriteLine(string.Format("Audio synced: oldPosition: {0} newPosition: {1}", oldPosition, newPosition));
Console.WriteLine(string.Format("**Audio synced**"));
Console.WriteLine(string.Format("Remote Server Time {0}", new DateTime(sync.ServerTimeTicks).ToLongTimeString()));
Console.WriteLine(string.Format("Remote Track Time: {0}", sync.TrackPosition));
Console.WriteLine(string.Format("Local Server Time: {0}", time.DateTime.ToLongTimeString()));
Console.WriteLine(string.Format("Local Track Time: {0}", _mediaPlayer.Position));
Console.WriteLine(string.Format("Offset: {0}", offset));
Console.WriteLine(string.Format("Old Position: {0}", oldPosition));
Console.WriteLine(string.Format("New Position: {0}", newPosition));
}
}
}
@ -158,7 +168,6 @@ namespace Aurora.Services.PlayerService
});
syncTask.Start();
// Task syncTask = Task.Run(() => Sync(remoteSyncClient));
}
}

3
Aurora/Utils/TimeUtils.cs
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@ -45,13 +45,14 @@ namespace Aurora.Utils
socket.ReceiveTimeout = 3000;
stopwatch.Start();
socket.Send(ntpData);
stopwatch.Stop();
socket.Receive(ntpData);
socket.Close();
}
//Offset to get to the "Transmit Timestamp" field (time at which the reply
//departed the server for the client, in 64-bit timestamp format."
const byte serverReplyTime = 40;
byte serverReplyTime = 40;
//Get the seconds part
ulong intPart = BitConverter.ToUInt32(ntpData, serverReplyTime);