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implement modular media sources

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This commit is contained in:
Luke Pulverenti
2015-03-28 16:22:27 -04:00
parent 3add1872c8
commit bd2ea703e3
42 changed files with 702 additions and 371 deletions
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148
MediaBrowser.Server.Implementations/Library/MediaSourceManager.cs
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@@ -1,4 +1,5 @@
using MediaBrowser.Controller.Channels;
using System.Collections.Concurrent;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaEncoding;
@@ -13,25 +14,24 @@ using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Server.Implementations.LiveTv;
namespace MediaBrowser.Server.Implementations.Library
{
public class MediaSourceManager : IMediaSourceManager
public class MediaSourceManager : IMediaSourceManager, IDisposable
{
private readonly IItemRepository _itemRepo;
private readonly IUserManager _userManager;
private readonly ILibraryManager _libraryManager;
private readonly IChannelManager _channelManager;
private IMediaSourceProvider[] _providers;
private readonly ILogger _logger;
public MediaSourceManager(IItemRepository itemRepo, IUserManager userManager, ILibraryManager libraryManager, IChannelManager channelManager, ILogger logger)
public MediaSourceManager(IItemRepository itemRepo, IUserManager userManager, ILibraryManager libraryManager, ILogger logger)
{
_itemRepo = itemRepo;
_userManager = userManager;
_libraryManager = libraryManager;
_channelManager = channelManager;
_logger = logger;
}
@@ -133,24 +133,15 @@ namespace MediaBrowser.Server.Implementations.Library
IEnumerable<MediaSourceInfo> mediaSources;
var hasMediaSources = (IHasMediaSources)item;
var channelItem = item as IChannelMediaItem;
if (channelItem != null)
if (string.IsNullOrWhiteSpace(userId))
{
mediaSources = await _channelManager.GetChannelItemMediaSources(id, true, cancellationToken)
.ConfigureAwait(false);
mediaSources = hasMediaSources.GetMediaSources(enablePathSubstitution);
}
else
{
if (string.IsNullOrWhiteSpace(userId))
{
mediaSources = hasMediaSources.GetMediaSources(enablePathSubstitution);
}
else
{
var user = _userManager.GetUserById(userId);
mediaSources = GetStaticMediaSources(hasMediaSources, enablePathSubstitution, user);
}
var user = _userManager.GetUserById(userId);
mediaSources = GetStaticMediaSources(hasMediaSources, enablePathSubstitution, user);
}
var dynamicMediaSources = await GetDynamicMediaSources(hasMediaSources, cancellationToken).ConfigureAwait(false);
@@ -161,11 +152,16 @@ namespace MediaBrowser.Server.Implementations.Library
foreach (var source in dynamicMediaSources)
{
source.SupportsTranscoding = false;
if (source.Protocol == MediaProtocol.File)
{
source.SupportsDirectStream = File.Exists(source.Path);
// TODO: Path substitution
}
else if (source.Protocol == MediaProtocol.Http)
{
// TODO: Allow this when the source is plain http, e.g. not HLS or Mpeg Dash
source.SupportsDirectStream = false;
}
else
{
@@ -175,7 +171,7 @@ namespace MediaBrowser.Server.Implementations.Library
list.Add(source);
}
return SortMediaSources(list);
return SortMediaSources(list).Where(i => i.Type != MediaSourceType.Placeholder);
}
private async Task<IEnumerable<MediaSourceInfo>> GetDynamicMediaSources(IHasMediaSources item, CancellationToken cancellationToken)
@@ -190,7 +186,15 @@ namespace MediaBrowser.Server.Implementations.Library
{
try
{
return await provider.GetMediaSources(item, cancellationToken).ConfigureAwait(false);
var sources = await provider.GetMediaSources(item, cancellationToken).ConfigureAwait(false);
var list = sources.ToList();
foreach (var mediaSource in list)
{
SetKeyProperties(provider, mediaSource);
}
return list;
}
catch (Exception ex)
{
@@ -199,6 +203,21 @@ namespace MediaBrowser.Server.Implementations.Library
}
}
private void SetKeyProperties(IMediaSourceProvider provider, MediaSourceInfo mediaSource)
{
var prefix = provider.GetType().FullName.GetMD5().ToString("N") + "|";
if (!string.IsNullOrWhiteSpace(mediaSource.OpenKey) && !mediaSource.OpenKey.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
{
mediaSource.OpenKey = prefix + mediaSource.OpenKey;
}
if (!string.IsNullOrWhiteSpace(mediaSource.CloseKey) && !mediaSource.CloseKey.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
{
mediaSource.CloseKey = prefix + mediaSource.CloseKey;
}
}
public Task<IEnumerable<MediaSourceInfo>> GetPlayackMediaSources(string id, bool enablePathSubstitution, CancellationToken cancellationToken)
{
return GetPlayackMediaSources(id, null, enablePathSubstitution, cancellationToken);
@@ -294,5 +313,90 @@ namespace MediaBrowser.Server.Implementations.Library
{
return GetStaticMediaSources(item, enablePathSubstitution).FirstOrDefault(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
}
private readonly ConcurrentDictionary<string, string> _openStreams =
new ConcurrentDictionary<string, string>();
private readonly SemaphoreSlim _liveStreamSemaphore = new SemaphoreSlim(1, 1);
public async Task<MediaSourceInfo> OpenMediaSource(string openKey, CancellationToken cancellationToken)
{
await _liveStreamSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
var tuple = GetProvider(openKey);
var provider = tuple.Item1;
var mediaSource = await provider.OpenMediaSource(tuple.Item2, cancellationToken).ConfigureAwait(false);
SetKeyProperties(provider, mediaSource);
_openStreams.AddOrUpdate(mediaSource.CloseKey, mediaSource.CloseKey, (key, i) => mediaSource.CloseKey);
return mediaSource;
}
finally
{
_liveStreamSemaphore.Release();
}
}
public async Task CloseMediaSource(string closeKey, CancellationToken cancellationToken)
{
await _liveStreamSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
var tuple = GetProvider(closeKey);
await tuple.Item1.OpenMediaSource(tuple.Item2, cancellationToken).ConfigureAwait(false);
string removedKey;
_openStreams.TryRemove(closeKey, out removedKey);
}
finally
{
_liveStreamSemaphore.Release();
}
}
private Tuple<IMediaSourceProvider, string> GetProvider(string key)
{
var keys = key.Split(new[] { '|' }, 2);
var provider = _providers.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N"), keys[0], StringComparison.OrdinalIgnoreCase));
return new Tuple<IMediaSourceProvider, string>(provider, keys[1]);
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
Dispose(true);
}
private readonly object _disposeLock = new object();
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool dispose)
{
if (dispose)
{
lock (_disposeLock)
{
foreach (var key in _openStreams.Keys.ToList())
{
var task = CloseMediaSource(key, CancellationToken.None);
Task.WaitAll(task);
}
_openStreams.Clear();
}
}
}
}
}