jellyfin/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
2016-12-08 01:53:46 -05:00

578 lines
21 KiB
C#

using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.LiveTv;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.MediaInfo;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Model.IO;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.IO;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.IO;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Net;
namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
{
public class HdHomerunHost : BaseTunerHost, ITunerHost, IConfigurableTunerHost
{
private readonly IHttpClient _httpClient;
private readonly IFileSystem _fileSystem;
private readonly IServerApplicationHost _appHost;
public HdHomerunHost(IServerConfigurationManager config, ILogger logger, IJsonSerializer jsonSerializer, IMediaEncoder mediaEncoder, IHttpClient httpClient, IFileSystem fileSystem, IServerApplicationHost appHost)
: base(config, logger, jsonSerializer, mediaEncoder)
{
_httpClient = httpClient;
_fileSystem = fileSystem;
_appHost = appHost;
}
public string Name
{
get { return "HD Homerun"; }
}
public override string Type
{
get { return DeviceType; }
}
public static string DeviceType
{
get { return "hdhomerun"; }
}
private const string ChannelIdPrefix = "hdhr_";
private string GetChannelId(TunerHostInfo info, Channels i)
{
var id = ChannelIdPrefix + i.GuideNumber;
if (info.DataVersion >= 1)
{
id += '_' + (i.GuideName ?? string.Empty).GetMD5().ToString("N");
}
return id;
}
private async Task<IEnumerable<Channels>> GetLineup(TunerHostInfo info, CancellationToken cancellationToken)
{
var options = new HttpRequestOptions
{
Url = string.Format("{0}/lineup.json", GetApiUrl(info, false)),
CancellationToken = cancellationToken,
BufferContent = false
};
using (var stream = await _httpClient.Get(options))
{
var lineup = JsonSerializer.DeserializeFromStream<List<Channels>>(stream) ?? new List<Channels>();
if (info.ImportFavoritesOnly)
{
lineup = lineup.Where(i => i.Favorite).ToList();
}
return lineup.Where(i => !i.DRM).ToList();
}
}
protected override async Task<IEnumerable<ChannelInfo>> GetChannelsInternal(TunerHostInfo info, CancellationToken cancellationToken)
{
var lineup = await GetLineup(info, cancellationToken).ConfigureAwait(false);
return lineup.Select(i => new ChannelInfo
{
Name = i.GuideName,
Number = i.GuideNumber,
Id = GetChannelId(info, i),
IsFavorite = i.Favorite,
TunerHostId = info.Id,
IsHD = i.HD == 1,
AudioCodec = i.AudioCodec,
VideoCodec = i.VideoCodec
});
}
private readonly Dictionary<string, DiscoverResponse> _modelCache = new Dictionary<string, DiscoverResponse>();
private async Task<string> GetModelInfo(TunerHostInfo info, CancellationToken cancellationToken)
{
lock (_modelCache)
{
DiscoverResponse response;
if (_modelCache.TryGetValue(info.Url, out response))
{
return response.ModelNumber;
}
}
try
{
using (var stream = await _httpClient.Get(new HttpRequestOptions()
{
Url = string.Format("{0}/discover.json", GetApiUrl(info, false)),
CancellationToken = cancellationToken,
CacheLength = TimeSpan.FromDays(1),
CacheMode = CacheMode.Unconditional,
TimeoutMs = Convert.ToInt32(TimeSpan.FromSeconds(5).TotalMilliseconds),
BufferContent = false
}))
{
var response = JsonSerializer.DeserializeFromStream<DiscoverResponse>(stream);
lock (_modelCache)
{
_modelCache[info.Id] = response;
}
return response.ModelNumber;
}
}
catch (HttpException ex)
{
if (ex.StatusCode.HasValue && ex.StatusCode.Value == System.Net.HttpStatusCode.NotFound)
{
var defaultValue = "HDHR";
// HDHR4 doesn't have this api
lock (_modelCache)
{
_modelCache[info.Id] = new DiscoverResponse
{
ModelNumber = defaultValue
};
}
return defaultValue;
}
throw;
}
}
public async Task<List<LiveTvTunerInfo>> GetTunerInfos(TunerHostInfo info, CancellationToken cancellationToken)
{
var model = await GetModelInfo(info, cancellationToken).ConfigureAwait(false);
using (var stream = await _httpClient.Get(new HttpRequestOptions()
{
Url = string.Format("{0}/tuners.html", GetApiUrl(info, false)),
CancellationToken = cancellationToken,
TimeoutMs = Convert.ToInt32(TimeSpan.FromSeconds(5).TotalMilliseconds),
BufferContent = false
}))
{
var tuners = new List<LiveTvTunerInfo>();
using (var sr = new StreamReader(stream, System.Text.Encoding.UTF8))
{
while (!sr.EndOfStream)
{
string line = StripXML(sr.ReadLine());
if (line.Contains("Channel"))
{
LiveTvTunerStatus status;
var index = line.IndexOf("Channel", StringComparison.OrdinalIgnoreCase);
var name = line.Substring(0, index - 1);
var currentChannel = line.Substring(index + 7);
if (currentChannel != "none") { status = LiveTvTunerStatus.LiveTv; } else { status = LiveTvTunerStatus.Available; }
tuners.Add(new LiveTvTunerInfo
{
Name = name,
SourceType = string.IsNullOrWhiteSpace(model) ? Name : model,
ProgramName = currentChannel,
Status = status
});
}
}
}
return tuners;
}
}
public async Task<List<LiveTvTunerInfo>> GetTunerInfos(CancellationToken cancellationToken)
{
var list = new List<LiveTvTunerInfo>();
foreach (var host in GetConfiguration().TunerHosts
.Where(i => i.IsEnabled && string.Equals(i.Type, Type, StringComparison.OrdinalIgnoreCase)))
{
try
{
list.AddRange(await GetTunerInfos(host, cancellationToken).ConfigureAwait(false));
}
catch (Exception ex)
{
Logger.ErrorException("Error getting tuner info", ex);
}
}
return list;
}
private string GetApiUrl(TunerHostInfo info, bool isPlayback)
{
var url = info.Url;
if (string.IsNullOrWhiteSpace(url))
{
throw new ArgumentException("Invalid tuner info");
}
if (!url.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
url = "http://" + url;
}
var uri = new Uri(url);
if (isPlayback)
{
var builder = new UriBuilder(uri);
builder.Port = 5004;
uri = builder.Uri;
}
return uri.AbsoluteUri.TrimEnd('/');
}
private static string StripXML(string source)
{
char[] buffer = new char[source.Length];
int bufferIndex = 0;
bool inside = false;
for (int i = 0; i < source.Length; i++)
{
char let = source[i];
if (let == '<')
{
inside = true;
continue;
}
if (let == '>')
{
inside = false;
continue;
}
if (!inside)
{
buffer[bufferIndex] = let;
bufferIndex++;
}
}
return new string(buffer, 0, bufferIndex);
}
private class Channels
{
public string GuideNumber { get; set; }
public string GuideName { get; set; }
public string VideoCodec { get; set; }
public string AudioCodec { get; set; }
public string URL { get; set; }
public bool Favorite { get; set; }
public bool DRM { get; set; }
public int HD { get; set; }
}
private async Task<MediaSourceInfo> GetMediaSource(TunerHostInfo info, string channelId, string profile)
{
int? width = null;
int? height = null;
bool isInterlaced = true;
string videoCodec = null;
string audioCodec = "ac3";
int? videoBitrate = null;
int? audioBitrate = null;
if (string.Equals(profile, "mobile", StringComparison.OrdinalIgnoreCase))
{
width = 1280;
height = 720;
isInterlaced = false;
videoCodec = "h264";
videoBitrate = 2000000;
}
else if (string.Equals(profile, "heavy", StringComparison.OrdinalIgnoreCase))
{
width = 1920;
height = 1080;
isInterlaced = false;
videoCodec = "h264";
videoBitrate = 15000000;
}
else if (string.Equals(profile, "internet540", StringComparison.OrdinalIgnoreCase))
{
width = 960;
height = 546;
isInterlaced = false;
videoCodec = "h264";
videoBitrate = 2500000;
}
else if (string.Equals(profile, "internet480", StringComparison.OrdinalIgnoreCase))
{
width = 848;
height = 480;
isInterlaced = false;
videoCodec = "h264";
videoBitrate = 2000000;
}
else if (string.Equals(profile, "internet360", StringComparison.OrdinalIgnoreCase))
{
width = 640;
height = 360;
isInterlaced = false;
videoCodec = "h264";
videoBitrate = 1500000;
}
else if (string.Equals(profile, "internet240", StringComparison.OrdinalIgnoreCase))
{
width = 432;
height = 240;
isInterlaced = false;
videoCodec = "h264";
videoBitrate = 1000000;
}
var channels = await GetChannels(info, true, CancellationToken.None).ConfigureAwait(false);
var channel = channels.FirstOrDefault(i => string.Equals(i.Number, channelId, StringComparison.OrdinalIgnoreCase));
if (channel != null)
{
if (string.IsNullOrWhiteSpace(videoCodec))
{
videoCodec = channel.VideoCodec;
}
audioCodec = channel.AudioCodec;
if (!videoBitrate.HasValue)
{
videoBitrate = (channel.IsHD ?? true) ? 15000000 : 2000000;
}
audioBitrate = (channel.IsHD ?? true) ? 448000 : 192000;
}
// normalize
if (string.Equals(videoCodec, "mpeg2", StringComparison.OrdinalIgnoreCase))
{
videoCodec = "mpeg2video";
}
string nal = null;
if (string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase))
{
nal = "0";
}
var url = GetApiUrl(info, true) + "/auto/v" + channelId;
// If raw was used, the tuner doesn't support params
if (!string.IsNullOrWhiteSpace(profile)
&& !string.Equals(profile, "native", StringComparison.OrdinalIgnoreCase))
{
url += "?transcode=" + profile;
}
var id = profile;
if (string.IsNullOrWhiteSpace(id))
{
id = "native";
}
id += "_" + url.GetMD5().ToString("N");
var mediaSource = new MediaSourceInfo
{
Path = url,
Protocol = MediaProtocol.Http,
MediaStreams = new List<MediaStream>
{
new MediaStream
{
Type = MediaStreamType.Video,
// Set the index to -1 because we don't know the exact index of the video stream within the container
Index = -1,
IsInterlaced = isInterlaced,
Codec = videoCodec,
Width = width,
Height = height,
BitRate = videoBitrate,
NalLengthSize = nal
},
new MediaStream
{
Type = MediaStreamType.Audio,
// Set the index to -1 because we don't know the exact index of the audio stream within the container
Index = -1,
Codec = audioCodec,
BitRate = audioBitrate
}
},
RequiresOpening = true,
RequiresClosing = false,
BufferMs = 0,
Container = "ts",
Id = id,
SupportsDirectPlay = false,
SupportsDirectStream = true,
SupportsTranscoding = true,
IsInfiniteStream = true
};
return mediaSource;
}
protected EncodingOptions GetEncodingOptions()
{
return Config.GetConfiguration<EncodingOptions>("encoding");
}
private string GetHdHrIdFromChannelId(string channelId)
{
return channelId.Split('_')[1];
}
protected override async Task<List<MediaSourceInfo>> GetChannelStreamMediaSources(TunerHostInfo info, string channelId, CancellationToken cancellationToken)
{
var list = new List<MediaSourceInfo>();
if (!channelId.StartsWith(ChannelIdPrefix, StringComparison.OrdinalIgnoreCase))
{
return list;
}
var hdhrId = GetHdHrIdFromChannelId(channelId);
try
{
var model = await GetModelInfo(info, cancellationToken).ConfigureAwait(false);
model = model ?? string.Empty;
if ((model.IndexOf("hdtc", StringComparison.OrdinalIgnoreCase) != -1))
{
list.Add(await GetMediaSource(info, hdhrId, "native").ConfigureAwait(false));
if (info.AllowHWTranscoding)
{
list.Add(await GetMediaSource(info, hdhrId, "heavy").ConfigureAwait(false));
list.Add(await GetMediaSource(info, hdhrId, "internet540").ConfigureAwait(false));
list.Add(await GetMediaSource(info, hdhrId, "internet480").ConfigureAwait(false));
list.Add(await GetMediaSource(info, hdhrId, "internet360").ConfigureAwait(false));
list.Add(await GetMediaSource(info, hdhrId, "internet240").ConfigureAwait(false));
list.Add(await GetMediaSource(info, hdhrId, "mobile").ConfigureAwait(false));
}
}
}
catch
{
}
if (list.Count == 0)
{
list.Add(await GetMediaSource(info, hdhrId, "native").ConfigureAwait(false));
}
return list;
}
protected override bool IsValidChannelId(string channelId)
{
if (string.IsNullOrWhiteSpace(channelId))
{
throw new ArgumentNullException("channelId");
}
return channelId.StartsWith(ChannelIdPrefix, StringComparison.OrdinalIgnoreCase);
}
protected override async Task<LiveStream> GetChannelStream(TunerHostInfo info, string channelId, string streamId, CancellationToken cancellationToken)
{
var profile = streamId.Split('_')[0];
Logger.Info("GetChannelStream: channel id: {0}. stream id: {1} profile: {2}", channelId, streamId, profile);
if (!channelId.StartsWith(ChannelIdPrefix, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("Channel not found");
}
var hdhrId = GetHdHrIdFromChannelId(channelId);
var mediaSource = await GetMediaSource(info, hdhrId, profile).ConfigureAwait(false);
var liveStream = new HdHomerunLiveStream(mediaSource, streamId, _fileSystem, _httpClient, Logger, Config.ApplicationPaths, _appHost);
liveStream.EnableStreamSharing = true;
return liveStream;
}
public async Task Validate(TunerHostInfo info)
{
if (!info.IsEnabled)
{
return;
}
lock (_modelCache)
{
_modelCache.Clear();
}
try
{
// Test it by pulling down the lineup
using (var stream = await _httpClient.Get(new HttpRequestOptions
{
Url = string.Format("{0}/discover.json", GetApiUrl(info, false)),
CancellationToken = CancellationToken.None,
BufferContent = false
}))
{
var response = JsonSerializer.DeserializeFromStream<DiscoverResponse>(stream);
info.DeviceId = response.DeviceID;
}
}
catch (HttpException ex)
{
if (ex.StatusCode.HasValue && ex.StatusCode.Value == System.Net.HttpStatusCode.NotFound)
{
// HDHR4 doesn't have this api
return;
}
throw;
}
}
protected override async Task<bool> IsAvailableInternal(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken)
{
var info = await GetTunerInfos(tuner, cancellationToken).ConfigureAwait(false);
return info.Any(i => i.Status == LiveTvTunerStatus.Available);
}
public class DiscoverResponse
{
public string FriendlyName { get; set; }
public string ModelNumber { get; set; }
public string FirmwareName { get; set; }
public string FirmwareVersion { get; set; }
public string DeviceID { get; set; }
public string DeviceAuth { get; set; }
public string BaseURL { get; set; }
public string LineupURL { get; set; }
}
}
}