jellyfin/Emby.Dlna/PlayTo/Device.cs
2021-07-26 23:02:32 +02:00

1322 lines
43 KiB
C#

#nullable disable
#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Net.Http;
using System.Security;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Linq;
using Emby.Dlna.Common;
using Emby.Dlna.Ssdp;
using Microsoft.Extensions.Logging;
namespace Emby.Dlna.PlayTo
{
public class Device : IDisposable
{
private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
private readonly IHttpClientFactory _httpClientFactory;
private readonly ILogger _logger;
private readonly object _timerLock = new object();
private Timer _timer;
private int _muteVol;
private int _volume;
private DateTime _lastVolumeRefresh;
private bool _volumeRefreshActive;
private int _connectFailureCount;
private bool _disposed;
public Device(DeviceInfo deviceProperties, IHttpClientFactory httpClientFactory, ILogger logger)
{
Properties = deviceProperties;
_httpClientFactory = httpClientFactory;
_logger = logger;
}
public event EventHandler<PlaybackStartEventArgs> PlaybackStart;
public event EventHandler<PlaybackProgressEventArgs> PlaybackProgress;
public event EventHandler<PlaybackStoppedEventArgs> PlaybackStopped;
public event EventHandler<MediaChangedEventArgs> MediaChanged;
public DeviceInfo Properties { get; set; }
public bool IsMuted { get; set; }
public int Volume
{
get
{
RefreshVolumeIfNeeded().GetAwaiter().GetResult();
return _volume;
}
set => _volume = value;
}
public TimeSpan? Duration { get; set; }
public TimeSpan Position { get; set; } = TimeSpan.FromSeconds(0);
public TransportState TransportState { get; private set; }
public bool IsPlaying => TransportState == TransportState.Playing;
public bool IsPaused => TransportState == TransportState.Paused || TransportState == TransportState.PausedPlayback;
public bool IsStopped => TransportState == TransportState.Stopped;
public Action OnDeviceUnavailable { get; set; }
private TransportCommands AvCommands { get; set; }
private TransportCommands RendererCommands { get; set; }
public UBaseObject CurrentMediaInfo { get; private set; }
public void Start()
{
_logger.LogDebug("Dlna Device.Start");
_timer = new Timer(TimerCallback, null, 1000, Timeout.Infinite);
}
private Task RefreshVolumeIfNeeded()
{
if (_volumeRefreshActive
&& DateTime.UtcNow >= _lastVolumeRefresh.AddSeconds(5))
{
_lastVolumeRefresh = DateTime.UtcNow;
return RefreshVolume();
}
return Task.CompletedTask;
}
private async Task RefreshVolume(CancellationToken cancellationToken = default)
{
if (_disposed)
{
return;
}
try
{
await GetVolume(cancellationToken).ConfigureAwait(false);
await GetMute(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.LogError(ex, "Error updating device volume info for {DeviceName}", Properties.Name);
}
}
private void RestartTimer(bool immediate = false)
{
lock (_timerLock)
{
if (_disposed)
{
return;
}
_volumeRefreshActive = true;
var time = immediate ? 100 : 10000;
_timer.Change(time, Timeout.Infinite);
}
}
/// <summary>
/// Restarts the timer in inactive mode.
/// </summary>
private void RestartTimerInactive()
{
lock (_timerLock)
{
if (_disposed)
{
return;
}
_volumeRefreshActive = false;
_timer.Change(Timeout.Infinite, Timeout.Infinite);
}
}
public Task VolumeDown(CancellationToken cancellationToken)
{
var sendVolume = Math.Max(Volume - 5, 0);
return SetVolume(sendVolume, cancellationToken);
}
public Task VolumeUp(CancellationToken cancellationToken)
{
var sendVolume = Math.Min(Volume + 5, 100);
return SetVolume(sendVolume, cancellationToken);
}
public Task ToggleMute(CancellationToken cancellationToken)
{
if (IsMuted)
{
return Unmute(cancellationToken);
}
return Mute(cancellationToken);
}
public async Task Mute(CancellationToken cancellationToken)
{
var success = await SetMute(true, cancellationToken).ConfigureAwait(true);
if (!success)
{
await SetVolume(0, cancellationToken).ConfigureAwait(false);
}
}
public async Task Unmute(CancellationToken cancellationToken)
{
var success = await SetMute(false, cancellationToken).ConfigureAwait(true);
if (!success)
{
var sendVolume = _muteVol <= 0 ? 20 : _muteVol;
await SetVolume(sendVolume, cancellationToken).ConfigureAwait(false);
}
}
private DeviceService GetServiceRenderingControl()
{
var services = Properties.Services;
return services.FirstOrDefault(s => string.Equals(s.ServiceType, "urn:schemas-upnp-org:service:RenderingControl:1", StringComparison.OrdinalIgnoreCase)) ??
services.FirstOrDefault(s => (s.ServiceType ?? string.Empty).StartsWith("urn:schemas-upnp-org:service:RenderingControl", StringComparison.OrdinalIgnoreCase));
}
private DeviceService GetAvTransportService()
{
var services = Properties.Services;
return services.FirstOrDefault(s => string.Equals(s.ServiceType, "urn:schemas-upnp-org:service:AVTransport:1", StringComparison.OrdinalIgnoreCase)) ??
services.FirstOrDefault(s => (s.ServiceType ?? string.Empty).StartsWith("urn:schemas-upnp-org:service:AVTransport", StringComparison.OrdinalIgnoreCase));
}
private async Task<bool> SetMute(bool mute, CancellationToken cancellationToken)
{
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetMute");
if (command == null)
{
return false;
}
var service = GetServiceRenderingControl();
if (service == null)
{
return false;
}
_logger.LogDebug("Setting mute");
var value = mute ? 1 : 0;
await new SsdpHttpClient(_httpClientFactory)
.SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
rendererCommands.BuildPost(command, service.ServiceType, value),
cancellationToken: cancellationToken)
.ConfigureAwait(false);
IsMuted = mute;
return true;
}
/// <summary>
/// Sets volume on a scale of 0-100.
/// </summary>
/// <param name="value">The volume on a scale of 0-100.</param>
/// <param name="cancellationToken">The cancellation token to cancel operation.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
public async Task SetVolume(int value, CancellationToken cancellationToken)
{
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetVolume");
if (command == null)
{
return;
}
var service = GetServiceRenderingControl();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
// Set it early and assume it will succeed
// Remote control will perform better
Volume = value;
await new SsdpHttpClient(_httpClientFactory)
.SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
rendererCommands.BuildPost(command, service.ServiceType, value),
cancellationToken: cancellationToken)
.ConfigureAwait(false);
}
public async Task Seek(TimeSpan value, CancellationToken cancellationToken)
{
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Seek");
if (command == null)
{
return;
}
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
await new SsdpHttpClient(_httpClientFactory)
.SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
avCommands.BuildPost(command, service.ServiceType, string.Format(CultureInfo.InvariantCulture, "{0:hh}:{0:mm}:{0:ss}", value), "REL_TIME"),
cancellationToken: cancellationToken)
.ConfigureAwait(false);
RestartTimer(true);
}
public async Task SetAvTransport(string url, string header, string metaData, CancellationToken cancellationToken)
{
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
url = url.Replace("&", "&amp;", StringComparison.Ordinal);
_logger.LogDebug("{0} - SetAvTransport Uri: {1} DlnaHeaders: {2}", Properties.Name, url, header);
var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetAVTransportURI");
if (command == null)
{
return;
}
var dictionary = new Dictionary<string, string>
{
{ "CurrentURI", url },
{ "CurrentURIMetaData", CreateDidlMeta(metaData) }
};
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
var post = avCommands.BuildPost(command, service.ServiceType, url, dictionary);
await new SsdpHttpClient(_httpClientFactory)
.SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
post,
header: header,
cancellationToken: cancellationToken)
.ConfigureAwait(false);
await Task.Delay(50, cancellationToken).ConfigureAwait(false);
try
{
await SetPlay(avCommands, cancellationToken).ConfigureAwait(false);
}
catch
{
// Some devices will throw an error if you tell it to play when it's already playing
// Others won't
}
RestartTimer(true);
}
/*
* SetNextAvTransport is used to specify to the DLNA device what is the next track to play.
* Without that information, the next track command on the device does not work.
*/
public async Task SetNextAvTransport(string url, string header, string metaData, CancellationToken cancellationToken = default)
{
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
url = url.Replace("&", "&amp;", StringComparison.Ordinal);
_logger.LogDebug("{PropertyName} - SetNextAvTransport Uri: {Url} DlnaHeaders: {Header}", Properties.Name, url, header);
var command = avCommands.ServiceActions.FirstOrDefault(c => string.Equals(c.Name, "SetNextAVTransportURI", StringComparison.OrdinalIgnoreCase));
if (command == null)
{
return;
}
var dictionary = new Dictionary<string, string>
{
{ "NextURI", url },
{ "NextURIMetaData", CreateDidlMeta(metaData) }
};
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
var post = avCommands.BuildPost(command, service.ServiceType, url, dictionary);
await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, post, header: header, cancellationToken)
.ConfigureAwait(false);
}
private static string CreateDidlMeta(string value)
{
if (string.IsNullOrEmpty(value))
{
return string.Empty;
}
return SecurityElement.Escape(value);
}
private Task SetPlay(TransportCommands avCommands, CancellationToken cancellationToken)
{
var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "Play");
if (command == null)
{
return Task.CompletedTask;
}
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
return new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
avCommands.BuildPost(command, service.ServiceType, 1),
cancellationToken: cancellationToken);
}
public async Task SetPlay(CancellationToken cancellationToken)
{
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
if (avCommands == null)
{
return;
}
await SetPlay(avCommands, cancellationToken).ConfigureAwait(false);
RestartTimer(true);
}
public async Task SetStop(CancellationToken cancellationToken)
{
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Stop");
if (command == null)
{
return;
}
var service = GetAvTransportService();
await new SsdpHttpClient(_httpClientFactory)
.SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
avCommands.BuildPost(command, service.ServiceType, 1),
cancellationToken: cancellationToken)
.ConfigureAwait(false);
RestartTimer(true);
}
public async Task SetPause(CancellationToken cancellationToken)
{
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Pause");
if (command == null)
{
return;
}
var service = GetAvTransportService();
await new SsdpHttpClient(_httpClientFactory)
.SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
avCommands.BuildPost(command, service.ServiceType, 1),
cancellationToken: cancellationToken)
.ConfigureAwait(false);
TransportState = TransportState.Paused;
RestartTimer(true);
}
private async void TimerCallback(object sender)
{
if (_disposed)
{
return;
}
try
{
var cancellationToken = CancellationToken.None;
var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
if (avCommands == null)
{
return;
}
var transportState = await GetTransportInfo(avCommands, cancellationToken).ConfigureAwait(false);
if (_disposed)
{
return;
}
if (transportState.HasValue)
{
// If we're not playing anything no need to get additional data
if (transportState.Value == TransportState.Stopped)
{
UpdateMediaInfo(null, transportState.Value);
}
else
{
var tuple = await GetPositionInfo(avCommands, cancellationToken).ConfigureAwait(false);
var currentObject = tuple.Item2;
if (tuple.Item1 && currentObject == null)
{
currentObject = await GetMediaInfo(avCommands, cancellationToken).ConfigureAwait(false);
}
if (currentObject != null)
{
UpdateMediaInfo(currentObject, transportState.Value);
}
}
_connectFailureCount = 0;
if (_disposed)
{
return;
}
// If we're not playing anything make sure we don't get data more often than necessary to keep the Session alive
if (transportState.Value == TransportState.Stopped)
{
RestartTimerInactive();
}
else
{
RestartTimer();
}
}
else
{
RestartTimerInactive();
}
}
catch (Exception ex)
{
if (_disposed)
{
return;
}
_logger.LogError(ex, "Error updating device info for {DeviceName}", Properties.Name);
_connectFailureCount++;
if (_connectFailureCount >= 3)
{
var action = OnDeviceUnavailable;
if (action != null)
{
_logger.LogDebug("Disposing device due to loss of connection");
action();
return;
}
}
RestartTimerInactive();
}
}
private async Task GetVolume(CancellationToken cancellationToken)
{
if (_disposed)
{
return;
}
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetVolume");
if (command == null)
{
return;
}
var service = GetServiceRenderingControl();
if (service == null)
{
return;
}
var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
rendererCommands.BuildPost(command, service.ServiceType),
cancellationToken: cancellationToken).ConfigureAwait(false);
if (result == null || result.Document == null)
{
return;
}
var volume = result.Document.Descendants(UPnpNamespaces.RenderingControl + "GetVolumeResponse").Select(i => i.Element("CurrentVolume")).FirstOrDefault(i => i != null);
var volumeValue = volume?.Value;
if (string.IsNullOrWhiteSpace(volumeValue))
{
return;
}
Volume = int.Parse(volumeValue, UsCulture);
if (Volume > 0)
{
_muteVol = Volume;
}
}
private async Task GetMute(CancellationToken cancellationToken)
{
if (_disposed)
{
return;
}
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetMute");
if (command == null)
{
return;
}
var service = GetServiceRenderingControl();
if (service == null)
{
return;
}
var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
rendererCommands.BuildPost(command, service.ServiceType),
cancellationToken: cancellationToken).ConfigureAwait(false);
if (result == null || result.Document == null)
{
return;
}
var valueNode = result.Document.Descendants(UPnpNamespaces.RenderingControl + "GetMuteResponse")
.Select(i => i.Element("CurrentMute"))
.FirstOrDefault(i => i != null);
IsMuted = string.Equals(valueNode?.Value, "1", StringComparison.OrdinalIgnoreCase);
}
private async Task<TransportState?> GetTransportInfo(TransportCommands avCommands, CancellationToken cancellationToken)
{
var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetTransportInfo");
if (command == null)
{
return null;
}
var service = GetAvTransportService();
if (service == null)
{
return null;
}
var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
avCommands.BuildPost(command, service.ServiceType),
cancellationToken: cancellationToken).ConfigureAwait(false);
if (result == null || result.Document == null)
{
return null;
}
var transportState =
result.Document.Descendants(UPnpNamespaces.AvTransport + "GetTransportInfoResponse").Select(i => i.Element("CurrentTransportState")).FirstOrDefault(i => i != null);
var transportStateValue = transportState?.Value;
if (transportStateValue != null
&& Enum.TryParse(transportStateValue, true, out TransportState state))
{
return state;
}
return null;
}
private async Task<UBaseObject> GetMediaInfo(TransportCommands avCommands, CancellationToken cancellationToken)
{
var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetMediaInfo");
if (command == null)
{
return null;
}
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
if (rendererCommands == null)
{
return null;
}
var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
rendererCommands.BuildPost(command, service.ServiceType),
cancellationToken: cancellationToken).ConfigureAwait(false);
if (result == null || result.Document == null)
{
return null;
}
var track = result.Document.Descendants("CurrentURIMetaData").FirstOrDefault();
if (track == null)
{
return null;
}
var e = track.Element(UPnpNamespaces.Items) ?? track;
var elementString = (string)e;
if (!string.IsNullOrWhiteSpace(elementString))
{
return UpnpContainer.Create(e);
}
track = result.Document.Descendants("CurrentURI").FirstOrDefault();
if (track == null)
{
return null;
}
e = track.Element(UPnpNamespaces.Items) ?? track;
elementString = (string)e;
if (!string.IsNullOrWhiteSpace(elementString))
{
return new UBaseObject
{
Url = elementString
};
}
return null;
}
private async Task<(bool, UBaseObject)> GetPositionInfo(TransportCommands avCommands, CancellationToken cancellationToken)
{
var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetPositionInfo");
if (command == null)
{
return (false, null);
}
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
if (rendererCommands == null)
{
return (false, null);
}
var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
Properties.BaseUrl,
service,
command.Name,
rendererCommands.BuildPost(command, service.ServiceType),
cancellationToken: cancellationToken).ConfigureAwait(false);
if (result == null || result.Document == null)
{
return (false, null);
}
var trackUriElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackURI")).FirstOrDefault(i => i != null);
var trackUri = trackUriElem?.Value;
var durationElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackDuration")).FirstOrDefault(i => i != null);
var duration = durationElem?.Value;
if (!string.IsNullOrWhiteSpace(duration)
&& !string.Equals(duration, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
{
Duration = TimeSpan.Parse(duration, UsCulture);
}
else
{
Duration = null;
}
var positionElem = result.Document.Descendants(UPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("RelTime")).FirstOrDefault(i => i != null);
var position = positionElem?.Value;
if (!string.IsNullOrWhiteSpace(position) && !string.Equals(position, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
{
Position = TimeSpan.Parse(position, UsCulture);
}
var track = result.Document.Descendants("TrackMetaData").FirstOrDefault();
if (track == null)
{
// If track is null, some vendors do this, use GetMediaInfo instead.
return (true, null);
}
var trackString = (string)track;
if (string.IsNullOrWhiteSpace(trackString) || string.Equals(trackString, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
{
return (true, null);
}
XElement uPnpResponse = null;
try
{
uPnpResponse = ParseResponse(trackString);
}
catch (Exception ex)
{
_logger.LogError(ex, "Uncaught exception while parsing xml");
}
if (uPnpResponse == null)
{
_logger.LogError("Failed to parse xml: \n {Xml}", trackString);
return (true, null);
}
var e = uPnpResponse.Element(UPnpNamespaces.Items);
var uTrack = CreateUBaseObject(e, trackUri);
return (true, uTrack);
}
private XElement ParseResponse(string xml)
{
// Handle different variations sent back by devices.
try
{
return XElement.Parse(xml);
}
catch (XmlException)
{
}
// first try to add a root node with a dlna namespace.
try
{
return XElement.Parse("<data xmlns:dlna=\"urn:schemas-dlna-org:device-1-0\">" + xml + "</data>")
.Descendants()
.First();
}
catch (XmlException)
{
}
// some devices send back invalid xml
try
{
return XElement.Parse(xml.Replace("&", "&amp;", StringComparison.Ordinal));
}
catch (XmlException)
{
}
return null;
}
private static UBaseObject CreateUBaseObject(XElement container, string trackUri)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
var url = container.GetValue(UPnpNamespaces.Res);
if (string.IsNullOrWhiteSpace(url))
{
url = trackUri;
}
return new UBaseObject
{
Id = container.GetAttributeValue(UPnpNamespaces.Id),
ParentId = container.GetAttributeValue(UPnpNamespaces.ParentId),
Title = container.GetValue(UPnpNamespaces.Title),
IconUrl = container.GetValue(UPnpNamespaces.Artwork),
SecondText = string.Empty,
Url = url,
ProtocolInfo = GetProtocolInfo(container),
MetaData = container.ToString()
};
}
private static string[] GetProtocolInfo(XElement container)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
var resElement = container.Element(UPnpNamespaces.Res);
if (resElement != null)
{
var info = resElement.Attribute(UPnpNamespaces.ProtocolInfo);
if (info != null && !string.IsNullOrWhiteSpace(info.Value))
{
return info.Value.Split(':');
}
}
return new string[4];
}
private async Task<TransportCommands> GetAVProtocolAsync(CancellationToken cancellationToken)
{
if (AvCommands != null)
{
return AvCommands;
}
if (_disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
var avService = GetAvTransportService();
if (avService == null)
{
return null;
}
string url = NormalizeUrl(Properties.BaseUrl, avService.ScpdUrl);
var httpClient = new SsdpHttpClient(_httpClientFactory);
var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
if (document == null)
{
return null;
}
AvCommands = TransportCommands.Create(document);
return AvCommands;
}
private async Task<TransportCommands> GetRenderingProtocolAsync(CancellationToken cancellationToken)
{
if (RendererCommands != null)
{
return RendererCommands;
}
if (_disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
var avService = GetServiceRenderingControl();
if (avService == null)
{
throw new ArgumentException("Device AvService is null");
}
string url = NormalizeUrl(Properties.BaseUrl, avService.ScpdUrl);
var httpClient = new SsdpHttpClient(_httpClientFactory);
_logger.LogDebug("Dlna Device.GetRenderingProtocolAsync");
var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
if (document == null)
{
return null;
}
RendererCommands = TransportCommands.Create(document);
return RendererCommands;
}
private string NormalizeUrl(string baseUrl, string url)
{
// If it's already a complete url, don't stick anything onto the front of it
if (url.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
return url;
}
if (!url.Contains('/', StringComparison.Ordinal))
{
url = "/dmr/" + url;
}
if (!url.StartsWith('/'))
{
url = "/" + url;
}
return baseUrl + url;
}
public static async Task<Device> CreateuPnpDeviceAsync(Uri url, IHttpClientFactory httpClientFactory, ILogger logger, CancellationToken cancellationToken)
{
var ssdpHttpClient = new SsdpHttpClient(httpClientFactory);
var document = await ssdpHttpClient.GetDataAsync(url.ToString(), cancellationToken).ConfigureAwait(false);
if (document == null)
{
return null;
}
var friendlyNames = new List<string>();
var name = document.Descendants(UPnpNamespaces.Ud.GetName("friendlyName")).FirstOrDefault();
if (name != null && !string.IsNullOrWhiteSpace(name.Value))
{
friendlyNames.Add(name.Value);
}
var room = document.Descendants(UPnpNamespaces.Ud.GetName("roomName")).FirstOrDefault();
if (room != null && !string.IsNullOrWhiteSpace(room.Value))
{
friendlyNames.Add(room.Value);
}
var deviceProperties = new DeviceInfo()
{
Name = string.Join(' ', friendlyNames),
BaseUrl = string.Format(CultureInfo.InvariantCulture, "http://{0}:{1}", url.Host, url.Port)
};
var model = document.Descendants(UPnpNamespaces.Ud.GetName("modelName")).FirstOrDefault();
if (model != null)
{
deviceProperties.ModelName = model.Value;
}
var modelNumber = document.Descendants(UPnpNamespaces.Ud.GetName("modelNumber")).FirstOrDefault();
if (modelNumber != null)
{
deviceProperties.ModelNumber = modelNumber.Value;
}
var uuid = document.Descendants(UPnpNamespaces.Ud.GetName("UDN")).FirstOrDefault();
if (uuid != null)
{
deviceProperties.UUID = uuid.Value;
}
var manufacturer = document.Descendants(UPnpNamespaces.Ud.GetName("manufacturer")).FirstOrDefault();
if (manufacturer != null)
{
deviceProperties.Manufacturer = manufacturer.Value;
}
var manufacturerUrl = document.Descendants(UPnpNamespaces.Ud.GetName("manufacturerURL")).FirstOrDefault();
if (manufacturerUrl != null)
{
deviceProperties.ManufacturerUrl = manufacturerUrl.Value;
}
var presentationUrl = document.Descendants(UPnpNamespaces.Ud.GetName("presentationURL")).FirstOrDefault();
if (presentationUrl != null)
{
deviceProperties.PresentationUrl = presentationUrl.Value;
}
var modelUrl = document.Descendants(UPnpNamespaces.Ud.GetName("modelURL")).FirstOrDefault();
if (modelUrl != null)
{
deviceProperties.ModelUrl = modelUrl.Value;
}
var serialNumber = document.Descendants(UPnpNamespaces.Ud.GetName("serialNumber")).FirstOrDefault();
if (serialNumber != null)
{
deviceProperties.SerialNumber = serialNumber.Value;
}
var modelDescription = document.Descendants(UPnpNamespaces.Ud.GetName("modelDescription")).FirstOrDefault();
if (modelDescription != null)
{
deviceProperties.ModelDescription = modelDescription.Value;
}
var icon = document.Descendants(UPnpNamespaces.Ud.GetName("icon")).FirstOrDefault();
if (icon != null)
{
deviceProperties.Icon = CreateIcon(icon);
}
foreach (var services in document.Descendants(UPnpNamespaces.Ud.GetName("serviceList")))
{
if (services == null)
{
continue;
}
var servicesList = services.Descendants(UPnpNamespaces.Ud.GetName("service"));
if (servicesList == null)
{
continue;
}
foreach (var element in servicesList)
{
var service = Create(element);
if (service != null)
{
deviceProperties.Services.Add(service);
}
}
}
return new Device(deviceProperties, httpClientFactory, logger);
}
private static DeviceIcon CreateIcon(XElement element)
{
if (element == null)
{
throw new ArgumentNullException(nameof(element));
}
var mimeType = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("mimetype"));
var width = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("width"));
var height = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("height"));
var depth = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("depth"));
var url = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("url"));
var widthValue = int.Parse(width, NumberStyles.Integer, UsCulture);
var heightValue = int.Parse(height, NumberStyles.Integer, UsCulture);
return new DeviceIcon
{
Depth = depth,
Height = heightValue,
MimeType = mimeType,
Url = url,
Width = widthValue
};
}
private static DeviceService Create(XElement element)
{
var type = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("serviceType"));
var id = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("serviceId"));
var scpdUrl = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("SCPDURL"));
var controlURL = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("controlURL"));
var eventSubURL = element.GetDescendantValue(UPnpNamespaces.Ud.GetName("eventSubURL"));
return new DeviceService
{
ControlUrl = controlURL,
EventSubUrl = eventSubURL,
ScpdUrl = scpdUrl,
ServiceId = id,
ServiceType = type
};
}
private void UpdateMediaInfo(UBaseObject mediaInfo, TransportState state)
{
TransportState = state;
var previousMediaInfo = CurrentMediaInfo;
CurrentMediaInfo = mediaInfo;
if (previousMediaInfo == null && mediaInfo != null)
{
if (state != TransportState.Stopped)
{
OnPlaybackStart(mediaInfo);
}
}
else if (mediaInfo != null && previousMediaInfo != null && !mediaInfo.Equals(previousMediaInfo))
{
OnMediaChanged(previousMediaInfo, mediaInfo);
}
else if (mediaInfo == null && previousMediaInfo != null)
{
OnPlaybackStop(previousMediaInfo);
}
else if (mediaInfo != null && mediaInfo.Equals(previousMediaInfo))
{
OnPlaybackProgress(mediaInfo);
}
}
private void OnPlaybackStart(UBaseObject mediaInfo)
{
if (string.IsNullOrWhiteSpace(mediaInfo.Url))
{
return;
}
PlaybackStart?.Invoke(this, new PlaybackStartEventArgs(mediaInfo));
}
private void OnPlaybackProgress(UBaseObject mediaInfo)
{
if (string.IsNullOrWhiteSpace(mediaInfo.Url))
{
return;
}
PlaybackProgress?.Invoke(this, new PlaybackProgressEventArgs(mediaInfo));
}
private void OnPlaybackStop(UBaseObject mediaInfo)
{
PlaybackStopped?.Invoke(this, new PlaybackStoppedEventArgs(mediaInfo));
}
private void OnMediaChanged(UBaseObject old, UBaseObject newMedia)
{
MediaChanged?.Invoke(this, new MediaChangedEventArgs(old, newMedia));
}
/// <inheritdoc />
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Releases unmanaged and optionally managed resources.
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
_timer?.Dispose();
}
_timer = null;
Properties = null;
_disposed = true;
}
/// <inheritdoc />
public override string ToString()
{
return string.Format(CultureInfo.InvariantCulture, "{0} - {1}", Properties.Name, Properties.BaseUrl);
}
}
}