using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Dlna;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Dlna;
using MediaBrowser.Model.Drawing;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Library;
using MediaBrowser.Model.LiveTv;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Api.Playback
{
///
/// Class BaseStreamingService
///
public abstract class BaseStreamingService : BaseApiService
{
///
/// Gets or sets the application paths.
///
/// The application paths.
protected IServerConfigurationManager ServerConfigurationManager { get; private set; }
///
/// Gets or sets the user manager.
///
/// The user manager.
protected IUserManager UserManager { get; private set; }
///
/// Gets or sets the library manager.
///
/// The library manager.
protected ILibraryManager LibraryManager { get; private set; }
///
/// Gets or sets the iso manager.
///
/// The iso manager.
protected IIsoManager IsoManager { get; private set; }
///
/// Gets or sets the media encoder.
///
/// The media encoder.
protected IMediaEncoder MediaEncoder { get; private set; }
protected IEncodingManager EncodingManager { get; private set; }
protected IDtoService DtoService { get; private set; }
protected IFileSystem FileSystem { get; private set; }
protected IItemRepository ItemRepository { get; private set; }
protected ILiveTvManager LiveTvManager { get; private set; }
protected IDlnaManager DlnaManager { get; private set; }
///
/// Initializes a new instance of the class.
///
/// The server configuration.
/// The user manager.
/// The library manager.
/// The iso manager.
/// The media encoder.
/// The dto service.
/// The file system.
/// The item repository.
protected BaseStreamingService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IDtoService dtoService, IFileSystem fileSystem, IItemRepository itemRepository, ILiveTvManager liveTvManager, IEncodingManager encodingManager, IDlnaManager dlnaManager)
{
DlnaManager = dlnaManager;
EncodingManager = encodingManager;
LiveTvManager = liveTvManager;
ItemRepository = itemRepository;
FileSystem = fileSystem;
DtoService = dtoService;
ServerConfigurationManager = serverConfig;
UserManager = userManager;
LibraryManager = libraryManager;
IsoManager = isoManager;
MediaEncoder = mediaEncoder;
}
///
/// Gets the command line arguments.
///
/// The output path.
/// The state.
/// if set to true [perform subtitle conversions].
/// System.String.
protected abstract string GetCommandLineArguments(string outputPath, StreamState state, bool performSubtitleConversions);
///
/// Gets the type of the transcoding job.
///
/// The type of the transcoding job.
protected abstract TranscodingJobType TranscodingJobType { get; }
///
/// Gets the output file extension.
///
/// The state.
/// System.String.
protected virtual string GetOutputFileExtension(StreamState state)
{
return Path.GetExtension(state.RequestedUrl);
}
///
/// Gets the output file path.
///
/// The state.
/// System.String.
protected string GetOutputFilePath(StreamState state)
{
var folder = ServerConfigurationManager.ApplicationPaths.TranscodingTempPath;
var outputFileExtension = GetOutputFileExtension(state);
return Path.Combine(folder, GetCommandLineArguments("dummy\\dummy", state, false).GetMD5() + (outputFileExtension ?? string.Empty).ToLower());
}
protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
///
/// Gets the fast seek command line parameter.
///
/// The request.
/// System.String.
/// The fast seek command line parameter.
protected string GetFastSeekCommandLineParameter(StreamRequest request)
{
var time = request.StartTimeTicks;
if (time.HasValue)
{
var seconds = TimeSpan.FromTicks(time.Value).TotalSeconds;
if (seconds > 0)
{
return string.Format("-ss {0}", seconds.ToString(UsCulture));
}
}
return string.Empty;
}
///
/// Gets the map args.
///
/// The state.
/// System.String.
protected virtual string GetMapArgs(StreamState state)
{
var args = string.Empty;
if (!state.HasMediaStreams)
{
return state.IsInputVideo ? "-sn" : string.Empty;
}
if (state.VideoStream != null)
{
args += string.Format("-map 0:{0}", state.VideoStream.Index);
}
else
{
args += "-map -0:v";
}
if (state.AudioStream != null)
{
args += string.Format(" -map 0:{0}", state.AudioStream.Index);
}
else
{
args += " -map -0:a";
}
if (state.SubtitleStream == null)
{
args += " -map -0:s";
}
return args;
}
///
/// Determines which stream will be used for playback
///
/// All stream.
/// Index of the desired.
/// The type.
/// if set to true [return first if no index].
/// MediaStream.
private MediaStream GetMediaStream(IEnumerable allStream, int? desiredIndex, MediaStreamType type, bool returnFirstIfNoIndex = true)
{
var streams = allStream.Where(s => s.Type == type).OrderBy(i => i.Index).ToList();
if (desiredIndex.HasValue)
{
var stream = streams.FirstOrDefault(s => s.Index == desiredIndex.Value);
if (stream != null)
{
return stream;
}
}
if (type == MediaStreamType.Video)
{
streams = streams.Where(i => !string.Equals(i.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase)).ToList();
}
if (returnFirstIfNoIndex && type == MediaStreamType.Audio)
{
return streams.FirstOrDefault(i => i.Channels.HasValue && i.Channels.Value > 0) ??
streams.FirstOrDefault();
}
// Just return the first one
return returnFirstIfNoIndex ? streams.FirstOrDefault() : null;
}
protected EncodingQuality GetQualitySetting()
{
var quality = ServerConfigurationManager.Configuration.MediaEncodingQuality;
if (quality == EncodingQuality.Auto)
{
var cpuCount = Environment.ProcessorCount;
if (cpuCount >= 4)
{
//return EncodingQuality.HighQuality;
}
return EncodingQuality.HighSpeed;
}
return quality;
}
///
/// Gets the number of threads.
///
/// System.Int32.
/// Unrecognized MediaEncodingQuality value.
protected int GetNumberOfThreads(StreamState state, bool isWebm)
{
// Use more when this is true. -re will keep cpu usage under control
if (state.ReadInputAtNativeFramerate)
{
if (isWebm)
{
return Math.Max(Environment.ProcessorCount - 1, 2);
}
return 0;
}
// Webm: http://www.webmproject.org/docs/encoder-parameters/
// The decoder will usually automatically use an appropriate number of threads according to how many cores are available but it can only use multiple threads
// for the coefficient data if the encoder selected --token-parts > 0 at encode time.
switch (GetQualitySetting())
{
case EncodingQuality.HighSpeed:
return 2;
case EncodingQuality.HighQuality:
return 2;
case EncodingQuality.MaxQuality:
return isWebm ? Math.Max(Environment.ProcessorCount - 1, 2) : 0;
default:
throw new Exception("Unrecognized MediaEncodingQuality value.");
}
}
///
/// Gets the video bitrate to specify on the command line
///
/// The state.
/// The video codec.
/// if set to true [is HLS].
/// System.String.
protected string GetVideoQualityParam(StreamState state, string videoCodec, bool isHls)
{
var param = string.Empty;
var isVc1 = state.VideoStream != null &&
string.Equals(state.VideoStream.Codec, "vc1", StringComparison.OrdinalIgnoreCase);
var qualitySetting = GetQualitySetting();
if (string.Equals(videoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
{
switch (qualitySetting)
{
case EncodingQuality.HighSpeed:
param = "-preset ultrafast";
break;
case EncodingQuality.HighQuality:
param = "-preset superfast";
break;
case EncodingQuality.MaxQuality:
param = "-preset superfast";
break;
}
switch (qualitySetting)
{
case EncodingQuality.HighSpeed:
param += " -crf 23";
break;
case EncodingQuality.HighQuality:
param += " -crf 20";
break;
case EncodingQuality.MaxQuality:
param += " -crf 18";
break;
}
}
// webm
else if (string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase))
{
// Values 0-3, 0 being highest quality but slower
var profileScore = 0;
string crf;
switch (qualitySetting)
{
case EncodingQuality.HighSpeed:
crf = "12";
profileScore = 2;
break;
case EncodingQuality.HighQuality:
crf = "8";
profileScore = 1;
break;
case EncodingQuality.MaxQuality:
crf = "4";
break;
default:
throw new ArgumentException("Unrecognized quality setting");
}
if (isVc1)
{
profileScore++;
// Max of 2
profileScore = Math.Min(profileScore, 2);
}
// http://www.webmproject.org/docs/encoder-parameters/
param = string.Format("-speed 16 -quality good -profile:v {0} -slices 8 -crf {1}",
profileScore.ToString(UsCulture),
crf);
}
else if (string.Equals(videoCodec, "mpeg4", StringComparison.OrdinalIgnoreCase))
{
param = "-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -bf 2";
}
// asf/wmv
else if (string.Equals(videoCodec, "wmv2", StringComparison.OrdinalIgnoreCase))
{
param = "-qmin 2";
}
else if (string.Equals(videoCodec, "msmpeg4", StringComparison.OrdinalIgnoreCase))
{
param = "-mbd 2";
}
param += GetVideoBitrateParam(state, videoCodec, isHls);
var framerate = GetFramerateParam(state);
if (framerate.HasValue)
{
param += string.Format(" -r {0}", framerate.Value.ToString(UsCulture));
}
if (!string.IsNullOrEmpty(state.OutputVideoSync))
{
param += " -vsync " + state.OutputVideoSync;
}
if (!string.IsNullOrEmpty(state.VideoRequest.Profile))
{
param += " -profile:v " + state.VideoRequest.Profile;
}
if (!string.IsNullOrEmpty(state.VideoRequest.Level))
{
param += " -level " + state.VideoRequest.Level;
}
return param;
}
protected string GetAudioFilterParam(StreamState state, bool isHls)
{
var volParam = string.Empty;
var audioSampleRate = string.Empty;
var channels = state.OutputAudioChannels;
// Boost volume to 200% when downsampling from 6ch to 2ch
if (channels.HasValue && channels.Value <= 2)
{
if (state.AudioStream != null && state.AudioStream.Channels.HasValue && state.AudioStream.Channels.Value > 5)
{
volParam = ",volume=" + ServerConfigurationManager.Configuration.DownMixAudioBoost.ToString(UsCulture);
}
}
if (state.OutputAudioSampleRate.HasValue)
{
audioSampleRate = state.OutputAudioSampleRate.Value + ":";
}
var adelay = isHls ? "adelay=1," : string.Empty;
var pts = string.Empty;
if (state.SubtitleStream != null)
{
if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 ||
state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1 ||
string.Equals(state.SubtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) ||
string.Equals(state.SubtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase))
{
var seconds = TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds;
pts = string.Format(",asetpts=PTS-{0}/TB",
Math.Round(seconds).ToString(UsCulture));
}
}
return string.Format("-af \"{0}aresample={1}async={4}{2}{3}\"",
adelay,
audioSampleRate,
volParam,
pts,
state.OutputAudioSync);
}
///
/// If we're going to put a fixed size on the command line, this will calculate it
///
/// The state.
/// The output video codec.
/// if set to true [perform text subtitle conversion].
/// System.String.
protected string GetOutputSizeParam(StreamState state, string outputVideoCodec, bool performTextSubtitleConversion)
{
// http://sonnati.wordpress.com/2012/10/19/ffmpeg-the-swiss-army-knife-of-internet-streaming-part-vi/
var assSubtitleParam = string.Empty;
var copyTsParam = string.Empty;
var yadifParam = state.DeInterlace ? "yadif=0:-1:0," : string.Empty;
var request = state.VideoRequest;
if (state.SubtitleStream != null)
{
if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 ||
state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1 ||
string.Equals(state.SubtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) ||
string.Equals(state.SubtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase))
{
assSubtitleParam = GetTextSubtitleParam(state, performTextSubtitleConversion);
copyTsParam = " -copyts";
}
}
// If fixed dimensions were supplied
if (request.Width.HasValue && request.Height.HasValue)
{
var widthParam = request.Width.Value.ToString(UsCulture);
var heightParam = request.Height.Value.ToString(UsCulture);
return string.Format("{4} -vf \"{0}scale=trunc({1}/2)*2:trunc({2}/2)*2{3}\"", yadifParam, widthParam, heightParam, assSubtitleParam, copyTsParam);
}
// If Max dimensions were supplied, for width selects lowest even number between input width and width req size and selects lowest even number from in width*display aspect and requested size
if (request.MaxWidth.HasValue && request.MaxHeight.HasValue)
{
var maxWidthParam = request.MaxWidth.Value.ToString(UsCulture);
var maxHeightParam = request.MaxHeight.Value.ToString(UsCulture);
return string.Format("{4} -vf \"{0}scale=trunc(min(iw\\,{1})/2)*2:trunc(min((iw/dar)\\,{2})/2)*2{3}\"", yadifParam, maxWidthParam, maxHeightParam, assSubtitleParam, copyTsParam);
}
var isH264Output = outputVideoCodec.Equals("libx264", StringComparison.OrdinalIgnoreCase);
// If a fixed width was requested
if (request.Width.HasValue)
{
var widthParam = request.Width.Value.ToString(UsCulture);
return isH264Output ?
string.Format("{3} -vf \"{0}scale={1}:trunc(ow/a/2)*2{2}\"", yadifParam, widthParam, assSubtitleParam, copyTsParam) :
string.Format("{3} -vf \"{0}scale={1}:-1{2}\"", yadifParam, widthParam, assSubtitleParam, copyTsParam);
}
// If a fixed height was requested
if (request.Height.HasValue)
{
var heightParam = request.Height.Value.ToString(UsCulture);
return isH264Output ?
string.Format("{3} -vf \"{0}scale=trunc(oh*a*2)/2:{1}{2}\"", yadifParam, heightParam, assSubtitleParam, copyTsParam) :
string.Format("{3} -vf \"{0}scale=-1:{1}{2}\"", yadifParam, heightParam, assSubtitleParam, copyTsParam);
}
// If a max width was requested
if (request.MaxWidth.HasValue && (!request.MaxHeight.HasValue || state.VideoStream == null))
{
var maxWidthParam = request.MaxWidth.Value.ToString(UsCulture);
return isH264Output ?
string.Format("{3} -vf \"{0}scale=min(iw\\,{1}):trunc(ow/a/2)*2{2}\"", yadifParam, maxWidthParam, assSubtitleParam, copyTsParam) :
string.Format("{3} -vf \"{0}scale=min(iw\\,{1}):-1{2}\"", yadifParam, maxWidthParam, assSubtitleParam, copyTsParam);
}
// If a max height was requested
if (request.MaxHeight.HasValue && (!request.MaxWidth.HasValue || state.VideoStream == null))
{
var maxHeightParam = request.MaxHeight.Value.ToString(UsCulture);
return isH264Output ?
string.Format("{3} -vf \"{0}scale=trunc(oh*a*2)/2:min(ih\\,{1}){2}\"", yadifParam, maxHeightParam, assSubtitleParam, copyTsParam) :
string.Format("{3} -vf \"{0}scale=-1:min(ih\\,{1}){2}\"", yadifParam, maxHeightParam, assSubtitleParam, copyTsParam);
}
if (state.VideoStream == null)
{
// No way to figure this out
return string.Empty;
}
// Need to perform calculations manually
// Try to account for bad media info
var currentHeight = state.VideoStream.Height ?? request.MaxHeight ?? request.Height ?? 0;
var currentWidth = state.VideoStream.Width ?? request.MaxWidth ?? request.Width ?? 0;
var outputSize = DrawingUtils.Resize(currentWidth, currentHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
// If we're encoding with libx264, it can't handle odd numbered widths or heights, so we'll have to fix that
if (isH264Output)
{
var widthParam = outputSize.Width.ToString(UsCulture);
var heightParam = outputSize.Height.ToString(UsCulture);
return string.Format("{4} -vf \"{0}scale=trunc({1}/2)*2:trunc({2}/2)*2{3}\"", yadifParam, widthParam, heightParam, assSubtitleParam, copyTsParam);
}
// Otherwise use -vf scale since ffmpeg will ensure internally that the aspect ratio is preserved
return string.Format("{3} -vf \"{0}scale={1}:-1{2}\"", yadifParam, Convert.ToInt32(outputSize.Width), assSubtitleParam, copyTsParam);
}
///
/// Gets the text subtitle param.
///
/// The state.
/// if set to true [perform conversion].
/// System.String.
protected string GetTextSubtitleParam(StreamState state, bool performConversion)
{
var path = state.SubtitleStream.IsExternal ? GetConvertedAssPath(state.MediaPath, state.SubtitleStream, performConversion) :
GetExtractedAssPath(state, performConversion);
if (string.IsNullOrEmpty(path))
{
return string.Empty;
}
var seconds = TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds;
return string.Format(",ass='{0}',setpts=PTS -{1}/TB",
path.Replace('\\', '/').Replace(":/", "\\:/"),
Math.Round(seconds).ToString(UsCulture));
}
///
/// Gets the extracted ass path.
///
/// The state.
/// if set to true [perform conversion].
/// System.String.
private string GetExtractedAssPath(StreamState state, bool performConversion)
{
var path = EncodingManager.GetSubtitleCachePath(state.MediaPath, state.SubtitleStream.Index, ".ass");
if (performConversion)
{
InputType type;
var inputPath = MediaEncoderHelpers.GetInputArgument(state.MediaPath, state.IsRemote, state.VideoType, state.IsoType, null, state.PlayableStreamFileNames, out type);
try
{
var parentPath = Path.GetDirectoryName(path);
Directory.CreateDirectory(parentPath);
// Don't re-encode ass/ssa to ass because ffmpeg ass encoder fails if there's more than one ass rectangle. Affect Anime mostly.
// See https://lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2013-April/063616.html
var isAssSubtitle = string.Equals(state.SubtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) || string.Equals(state.SubtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase);
var task = MediaEncoder.ExtractTextSubtitle(inputPath, type, state.SubtitleStream.Index, isAssSubtitle, path, CancellationToken.None);
Task.WaitAll(task);
}
catch
{
return null;
}
}
return path;
}
///
/// Gets the converted ass path.
///
/// The media path.
/// The subtitle stream.
/// if set to true [perform conversion].
/// System.String.
private string GetConvertedAssPath(string mediaPath, MediaStream subtitleStream, bool performConversion)
{
var path = EncodingManager.GetSubtitleCachePath(subtitleStream.Path, ".ass");
if (performConversion)
{
try
{
var parentPath = Path.GetDirectoryName(path);
Directory.CreateDirectory(parentPath);
var task = MediaEncoder.ConvertTextSubtitleToAss(subtitleStream.Path, path, subtitleStream.Language, CancellationToken.None);
Task.WaitAll(task);
}
catch
{
return null;
}
}
return path;
}
///
/// Gets the internal graphical subtitle param.
///
/// The state.
/// The output video codec.
/// System.String.
protected string GetInternalGraphicalSubtitleParam(StreamState state, string outputVideoCodec)
{
var outputSizeParam = string.Empty;
var request = state.VideoRequest;
// Add resolution params, if specified
if (request.Width.HasValue || request.Height.HasValue || request.MaxHeight.HasValue || request.MaxWidth.HasValue)
{
outputSizeParam = GetOutputSizeParam(state, outputVideoCodec, false).TrimEnd('"');
outputSizeParam = "," + outputSizeParam.Substring(outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase));
}
var videoSizeParam = string.Empty;
if (state.VideoStream != null && state.VideoStream.Width.HasValue && state.VideoStream.Height.HasValue)
{
videoSizeParam = string.Format(",scale={0}:{1}", state.VideoStream.Width.Value.ToString(UsCulture), state.VideoStream.Height.Value.ToString(UsCulture));
}
return string.Format(" -filter_complex \"[0:{0}]format=yuva444p{3},lut=u=128:v=128:y=gammaval(.3)[sub] ; [0:{1}] [sub] overlay{2}\"",
state.SubtitleStream.Index,
state.VideoStream.Index,
outputSizeParam,
videoSizeParam);
}
///
/// Gets the probe size argument.
///
/// The media path.
/// if set to true [is video].
/// Type of the video.
/// Type of the iso.
/// System.String.
private string GetProbeSizeArgument(string mediaPath, bool isVideo, VideoType? videoType, IsoType? isoType)
{
var type = !isVideo ? MediaEncoderHelpers.GetInputType(null, null) :
MediaEncoderHelpers.GetInputType(videoType, isoType);
return MediaEncoder.GetProbeSizeArgument(type);
}
///
/// Gets the number of audio channels to specify on the command line
///
/// The request.
/// The audio stream.
/// System.Nullable{System.Int32}.
private int? GetNumAudioChannelsParam(StreamRequest request, MediaStream audioStream)
{
if (audioStream != null)
{
var codec = request.AudioCodec ?? string.Empty;
if (audioStream.Channels > 2 && codec.IndexOf("wma", StringComparison.OrdinalIgnoreCase) != -1)
{
// wmav2 currently only supports two channel output
return 2;
}
}
if (request.MaxAudioChannels.HasValue)
{
if (audioStream != null && audioStream.Channels.HasValue)
{
return Math.Min(request.MaxAudioChannels.Value, audioStream.Channels.Value);
}
return request.MaxAudioChannels.Value;
}
return request.AudioChannels;
}
///
/// Determines whether the specified stream is H264.
///
/// The stream.
/// true if the specified stream is H264; otherwise, false.
protected bool IsH264(MediaStream stream)
{
return stream.Codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
stream.Codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
}
///
/// Gets the name of the output audio codec
///
/// The request.
/// System.String.
protected string GetAudioCodec(StreamRequest request)
{
var codec = request.AudioCodec;
if (string.Equals(codec, "aac", StringComparison.OrdinalIgnoreCase))
{
return "aac -strict experimental";
}
if (string.Equals(codec, "mp3", StringComparison.OrdinalIgnoreCase))
{
return "libmp3lame";
}
if (string.Equals(codec, "vorbis", StringComparison.OrdinalIgnoreCase))
{
return "libvorbis";
}
if (string.Equals(codec, "wma", StringComparison.OrdinalIgnoreCase))
{
return "wmav2";
}
return codec.ToLower();
}
///
/// Gets the name of the output video codec
///
/// The request.
/// System.String.
protected string GetVideoCodec(VideoStreamRequest request)
{
var codec = request.VideoCodec;
if (!string.IsNullOrEmpty(codec))
{
if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase))
{
return "libx264";
}
if (string.Equals(codec, "vpx", StringComparison.OrdinalIgnoreCase))
{
return "libvpx";
}
if (string.Equals(codec, "wmv", StringComparison.OrdinalIgnoreCase))
{
return "wmv2";
}
if (string.Equals(codec, "theora", StringComparison.OrdinalIgnoreCase))
{
return "libtheora";
}
return codec.ToLower();
}
return "copy";
}
///
/// Gets the input argument.
///
/// The state.
/// System.String.
protected string GetInputArgument(StreamState state)
{
var type = InputType.File;
var inputPath = new[] { state.MediaPath };
if (state.IsInputVideo)
{
if (!(state.VideoType == VideoType.Iso && state.IsoMount == null))
{
inputPath = MediaEncoderHelpers.GetInputArgument(state.MediaPath, state.IsRemote, state.VideoType, state.IsoType, state.IsoMount, state.PlayableStreamFileNames, out type);
}
}
return MediaEncoder.GetInputArgument(inputPath, type);
}
///
/// Starts the FFMPEG.
///
/// The state.
/// The output path.
/// Task.
protected async Task StartFfMpeg(StreamState state, string outputPath)
{
if (!File.Exists(MediaEncoder.EncoderPath))
{
throw new InvalidOperationException("ffmpeg was not found at " + MediaEncoder.EncoderPath);
}
Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
if (state.IsInputVideo && state.VideoType == VideoType.Iso && state.IsoType.HasValue && IsoManager.CanMount(state.MediaPath))
{
state.IsoMount = await IsoManager.Mount(state.MediaPath, CancellationToken.None).ConfigureAwait(false);
}
var commandLineArgs = GetCommandLineArguments(outputPath, state, true);
if (ServerConfigurationManager.Configuration.EnableDebugEncodingLogging)
{
commandLineArgs = "-loglevel debug " + commandLineArgs;
}
var process = new Process
{
StartInfo = new ProcessStartInfo
{
CreateNoWindow = true,
UseShellExecute = false,
// Must consume both stdout and stderr or deadlocks may occur
RedirectStandardOutput = true,
RedirectStandardError = true,
FileName = MediaEncoder.EncoderPath,
WorkingDirectory = Path.GetDirectoryName(MediaEncoder.EncoderPath),
Arguments = commandLineArgs,
WindowStyle = ProcessWindowStyle.Hidden,
ErrorDialog = false
},
EnableRaisingEvents = true
};
ApiEntryPoint.Instance.OnTranscodeBeginning(outputPath, TranscodingJobType, process, state.IsInputVideo, state.Request.StartTimeTicks, state.MediaPath, state.Request.DeviceId);
var commandLineLogMessage = process.StartInfo.FileName + " " + process.StartInfo.Arguments;
Logger.Info(commandLineLogMessage);
var logFilePath = Path.Combine(ServerConfigurationManager.ApplicationPaths.LogDirectoryPath, "transcode-" + Guid.NewGuid() + ".txt");
Directory.CreateDirectory(Path.GetDirectoryName(logFilePath));
// FFMpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
state.LogFileStream = FileSystem.GetFileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, true);
var commandLineLogMessageBytes = Encoding.UTF8.GetBytes(commandLineLogMessage + Environment.NewLine + Environment.NewLine);
await state.LogFileStream.WriteAsync(commandLineLogMessageBytes, 0, commandLineLogMessageBytes.Length).ConfigureAwait(false);
process.Exited += (sender, args) => OnFfMpegProcessExited(process, state);
try
{
process.Start();
}
catch (Exception ex)
{
Logger.ErrorException("Error starting ffmpeg", ex);
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType);
throw;
}
// MUST read both stdout and stderr asynchronously or a deadlock may occurr
process.BeginOutputReadLine();
#pragma warning disable 4014
// Important - don't await the log task or we won't be able to kill ffmpeg when the user stops playback
process.StandardError.BaseStream.CopyToAsync(state.LogFileStream);
#pragma warning restore 4014
// Wait for the file to exist before proceeeding
while (!File.Exists(outputPath))
{
await Task.Delay(100).ConfigureAwait(false);
}
// Allow a small amount of time to buffer a little
if (state.IsInputVideo)
{
await Task.Delay(500).ConfigureAwait(false);
}
// This is arbitrary, but add a little buffer time when internet streaming
if (state.IsRemote)
{
await Task.Delay(3000).ConfigureAwait(false);
}
}
private int? GetVideoBitrateParamValue(VideoStreamRequest request, MediaStream videoStream)
{
var bitrate = request.VideoBitRate;
if (videoStream != null)
{
var isUpscaling = request.Height.HasValue && videoStream.Height.HasValue &&
request.Height.Value > videoStream.Height.Value;
if (request.Width.HasValue && videoStream.Width.HasValue &&
request.Width.Value > videoStream.Width.Value)
{
isUpscaling = true;
}
// Don't allow bitrate increases unless upscaling
if (!isUpscaling)
{
if (bitrate.HasValue && videoStream.BitRate.HasValue)
{
bitrate = Math.Min(bitrate.Value, videoStream.BitRate.Value);
}
}
}
return bitrate;
}
protected string GetVideoBitrateParam(StreamState state, string videoCodec, bool isHls)
{
var bitrate = state.OutputVideoBitrate;
if (bitrate.HasValue)
{
var hasFixedResolution = state.VideoRequest.HasFixedResolution;
if (string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase))
{
if (hasFixedResolution)
{
return string.Format(" -minrate:v ({0}*.90) -maxrate:v ({0}*1.10) -bufsize:v {0} -b:v {0}", bitrate.Value.ToString(UsCulture));
}
// With vpx when crf is used, b:v becomes a max rate
// https://trac.ffmpeg.org/wiki/vpxEncodingGuide. But higher bitrate source files -b:v causes judder so limite the bitrate but dont allow it to "saturate" the bitrate. So dont contrain it down just up.
return string.Format(" -maxrate:v {0} -bufsize:v ({0}*2) -b:v {0}", bitrate.Value.ToString(UsCulture));
}
if (string.Equals(videoCodec, "msmpeg4", StringComparison.OrdinalIgnoreCase))
{
return string.Format(" -b:v {0}", bitrate.Value.ToString(UsCulture));
}
// H264
if (hasFixedResolution)
{
if (isHls)
{
return string.Format(" -b:v {0} -maxrate ({0}*.80) -bufsize {0}", bitrate.Value.ToString(UsCulture));
}
return string.Format(" -b:v {0}", bitrate.Value.ToString(UsCulture));
}
return string.Format(" -maxrate {0} -bufsize {1}",
bitrate.Value.ToString(UsCulture),
(bitrate.Value * 2).ToString(UsCulture));
}
return string.Empty;
}
private int? GetAudioBitrateParam(StreamRequest request, MediaStream audioStream)
{
if (request.AudioBitRate.HasValue)
{
// Make sure we don't request a bitrate higher than the source
var currentBitrate = audioStream == null ? request.AudioBitRate.Value : audioStream.BitRate ?? request.AudioBitRate.Value;
return Math.Min(currentBitrate, request.AudioBitRate.Value);
}
return null;
}
///
/// Gets the user agent param.
///
/// The path.
/// System.String.
private string GetUserAgentParam(string path)
{
var useragent = GetUserAgent(path);
if (!string.IsNullOrEmpty(useragent))
{
return "-user-agent \"" + useragent + "\"";
}
return string.Empty;
}
///
/// Gets the user agent.
///
/// The path.
/// System.String.
protected string GetUserAgent(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException("path");
}
if (path.IndexOf("apple.com", StringComparison.OrdinalIgnoreCase) != -1)
{
return "QuickTime/7.7.4";
}
return string.Empty;
}
///
/// Processes the exited.
///
/// The process.
/// The state.
protected void OnFfMpegProcessExited(Process process, StreamState state)
{
state.Dispose();
var outputFilePath = GetOutputFilePath(state);
try
{
Logger.Info("FFMpeg exited with code {0} for {1}", process.ExitCode, outputFilePath);
}
catch
{
Logger.Info("FFMpeg exited with an error for {0}", outputFilePath);
}
}
protected double? GetFramerateParam(StreamState state)
{
if (state.VideoRequest != null)
{
if (state.VideoRequest.Framerate.HasValue)
{
return state.VideoRequest.Framerate.Value;
}
var maxrate = state.VideoRequest.MaxFramerate ?? 23.97602;
if (state.VideoStream != null)
{
var contentRate = state.VideoStream.AverageFrameRate ?? state.VideoStream.RealFrameRate;
if (contentRate.HasValue && contentRate.Value > maxrate)
{
return maxrate;
}
}
}
return null;
}
///
/// Parses the parameters.
///
/// The request.
private void ParseParams(StreamRequest request)
{
var vals = request.Params.Split(';');
var videoRequest = request as VideoStreamRequest;
for (var i = 0; i < vals.Length; i++)
{
var val = vals[i];
if (string.IsNullOrWhiteSpace(val))
{
continue;
}
if (i == 0)
{
request.DeviceProfileId = val;
}
else if (i == 1)
{
request.DeviceId = val;
}
else if (i == 2)
{
request.MediaSourceId = val;
}
else if (i == 3)
{
request.Static = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
}
else if (i == 4)
{
if (videoRequest != null)
{
videoRequest.VideoCodec = val;
}
}
else if (i == 5)
{
request.AudioCodec = val;
}
else if (i == 6)
{
if (videoRequest != null)
{
videoRequest.AudioStreamIndex = int.Parse(val, UsCulture);
}
}
else if (i == 7)
{
if (videoRequest != null)
{
videoRequest.SubtitleStreamIndex = int.Parse(val, UsCulture);
}
}
else if (i == 8)
{
if (videoRequest != null)
{
videoRequest.VideoBitRate = int.Parse(val, UsCulture);
}
}
else if (i == 9)
{
request.AudioBitRate = int.Parse(val, UsCulture);
}
else if (i == 10)
{
request.MaxAudioChannels = int.Parse(val, UsCulture);
}
else if (i == 11)
{
if (videoRequest != null)
{
videoRequest.MaxFramerate = double.Parse(val, UsCulture);
}
}
else if (i == 12)
{
if (videoRequest != null)
{
videoRequest.MaxWidth = int.Parse(val, UsCulture);
}
}
else if (i == 13)
{
if (videoRequest != null)
{
videoRequest.MaxHeight = int.Parse(val, UsCulture);
}
}
else if (i == 14)
{
request.StartTimeTicks = long.Parse(val, UsCulture);
}
else if (i == 15)
{
if (videoRequest != null)
{
videoRequest.Level = val;
}
}
}
}
///
/// Parses the dlna headers.
///
/// The request.
private void ParseDlnaHeaders(StreamRequest request)
{
if (!request.StartTimeTicks.HasValue)
{
var timeSeek = GetHeader("TimeSeekRange.dlna.org");
request.StartTimeTicks = ParseTimeSeekHeader(timeSeek);
}
}
///
/// Parses the time seek header.
///
private long? ParseTimeSeekHeader(string value)
{
if (string.IsNullOrWhiteSpace(value))
{
return null;
}
if (value.IndexOf("npt=", StringComparison.OrdinalIgnoreCase) != 0)
{
throw new ArgumentException("Invalid timeseek header");
}
value = value.Substring(4).Split(new[] { '-' }, 2)[0];
if (value.IndexOf(':') == -1)
{
// Parses npt times in the format of '417.33'
double seconds;
if (double.TryParse(value, NumberStyles.Any, UsCulture, out seconds))
{
return TimeSpan.FromSeconds(seconds).Ticks;
}
throw new ArgumentException("Invalid timeseek header");
}
// Parses npt times in the format of '10:19:25.7'
var tokens = value.Split(new[] { ':' }, 3);
double secondsSum = 0;
var timeFactor = 3600;
foreach (var time in tokens)
{
double digit;
if (double.TryParse(time, NumberStyles.Any, UsCulture, out digit))
{
secondsSum += (digit * timeFactor);
}
else
{
throw new ArgumentException("Invalid timeseek header");
}
timeFactor /= 60;
}
return TimeSpan.FromSeconds(secondsSum).Ticks;
}
///
/// Gets the state.
///
/// The request.
/// The cancellation token.
/// StreamState.
protected async Task GetState(StreamRequest request, CancellationToken cancellationToken)
{
ParseDlnaHeaders(request);
if (!string.IsNullOrWhiteSpace(request.Params))
{
ParseParams(request);
}
var user = AuthorizationRequestFilterAttribute.GetCurrentUser(Request, UserManager);
var url = Request.PathInfo;
if (string.IsNullOrEmpty(request.AudioCodec))
{
request.AudioCodec = InferAudioCodec(url);
}
var state = new StreamState(LiveTvManager, Logger)
{
Request = request,
RequestedUrl = url
};
if (!string.IsNullOrWhiteSpace(request.AudioCodec))
{
state.SupportedAudioCodecs = request.AudioCodec.Split(',').Where(i => !string.IsNullOrWhiteSpace(i)).ToList();
state.Request.AudioCodec = state.SupportedAudioCodecs.FirstOrDefault();
}
var item = string.IsNullOrEmpty(request.MediaSourceId) ?
DtoService.GetItemByDtoId(request.Id) :
DtoService.GetItemByDtoId(request.MediaSourceId);
if (user != null && item.GetPlayAccess(user) != PlayAccess.Full)
{
throw new ArgumentException(string.Format("{0} is not allowed to play media.", user.Name));
}
if (item is ILiveTvRecording)
{
var recording = await LiveTvManager.GetInternalRecording(request.Id, cancellationToken).ConfigureAwait(false);
state.VideoType = VideoType.VideoFile;
state.IsInputVideo = string.Equals(recording.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
state.PlayableStreamFileNames = new List();
var path = recording.RecordingInfo.Path;
var mediaUrl = recording.RecordingInfo.Url;
if (string.IsNullOrWhiteSpace(path) && string.IsNullOrWhiteSpace(mediaUrl))
{
var streamInfo = await LiveTvManager.GetRecordingStream(request.Id, cancellationToken).ConfigureAwait(false);
state.LiveTvStreamId = streamInfo.Id;
path = streamInfo.Path;
mediaUrl = streamInfo.Url;
}
if (!string.IsNullOrEmpty(path))
{
state.MediaPath = path;
state.IsRemote = false;
}
else if (!string.IsNullOrEmpty(mediaUrl))
{
state.MediaPath = mediaUrl;
state.IsRemote = true;
}
state.RunTimeTicks = recording.RunTimeTicks;
if (recording.RecordingInfo.Status == RecordingStatus.InProgress)
{
await Task.Delay(1000, cancellationToken).ConfigureAwait(false);
}
state.ReadInputAtNativeFramerate = recording.RecordingInfo.Status == RecordingStatus.InProgress;
state.OutputAudioSync = "1000";
state.DeInterlace = true;
state.InputVideoSync = "-1";
state.InputAudioSync = "1";
}
else if (item is LiveTvChannel)
{
var channel = LiveTvManager.GetInternalChannel(request.Id);
state.VideoType = VideoType.VideoFile;
state.IsInputVideo = string.Equals(channel.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
state.PlayableStreamFileNames = new List();
var streamInfo = await LiveTvManager.GetChannelStream(request.Id, cancellationToken).ConfigureAwait(false);
state.LiveTvStreamId = streamInfo.Id;
if (!string.IsNullOrEmpty(streamInfo.Path))
{
state.MediaPath = streamInfo.Path;
state.IsRemote = false;
await Task.Delay(1000, cancellationToken).ConfigureAwait(false);
}
else if (!string.IsNullOrEmpty(streamInfo.Url))
{
state.MediaPath = streamInfo.Url;
state.IsRemote = true;
}
state.ReadInputAtNativeFramerate = true;
state.OutputAudioSync = "1000";
state.DeInterlace = true;
state.InputVideoSync = "-1";
state.InputAudioSync = "1";
}
else
{
state.MediaPath = item.Path;
state.IsRemote = item.LocationType == LocationType.Remote;
var video = item as Video;
if (video != null)
{
state.IsInputVideo = true;
state.VideoType = video.VideoType;
state.IsoType = video.IsoType;
state.PlayableStreamFileNames = video.PlayableStreamFileNames == null
? new List()
: video.PlayableStreamFileNames.ToList();
}
state.RunTimeTicks = item.RunTimeTicks;
}
var videoRequest = request as VideoStreamRequest;
var mediaStreams = ItemRepository.GetMediaStreams(new MediaStreamQuery
{
ItemId = item.Id
}).ToList();
if (videoRequest != null)
{
if (string.IsNullOrEmpty(videoRequest.VideoCodec))
{
videoRequest.VideoCodec = InferVideoCodec(url);
}
state.VideoStream = GetMediaStream(mediaStreams, videoRequest.VideoStreamIndex, MediaStreamType.Video);
state.SubtitleStream = GetMediaStream(mediaStreams, videoRequest.SubtitleStreamIndex, MediaStreamType.Subtitle, false);
state.AudioStream = GetMediaStream(mediaStreams, videoRequest.AudioStreamIndex, MediaStreamType.Audio);
if (state.VideoStream != null && state.VideoStream.IsInterlaced)
{
state.DeInterlace = true;
}
EnforceResolutionLimit(state, videoRequest);
}
else
{
state.AudioStream = GetMediaStream(mediaStreams, null, MediaStreamType.Audio, true);
}
state.HasMediaStreams = mediaStreams.Count > 0;
state.SegmentLength = state.ReadInputAtNativeFramerate ? 5 : 10;
state.HlsListSize = state.ReadInputAtNativeFramerate ? 100 : 1440;
var container = Path.GetExtension(state.RequestedUrl);
if (string.IsNullOrEmpty(container))
{
container = Path.GetExtension(GetOutputFilePath(state));
}
state.OutputContainer = (container ?? string.Empty).TrimStart('.');
ApplyDeviceProfileSettings(state);
state.OutputContainer = GetOutputFileExtension(state).TrimStart('.');
state.OutputAudioBitrate = GetAudioBitrateParam(state.Request, state.AudioStream);
state.OutputAudioSampleRate = request.AudioSampleRate;
state.OutputAudioChannels = GetNumAudioChannelsParam(state.Request, state.AudioStream);
if (videoRequest != null)
{
state.OutputVideoBitrate = GetVideoBitrateParamValue(state.VideoRequest, state.VideoStream);
if (state.VideoStream != null && CanStreamCopyVideo(videoRequest, state.VideoStream))
{
videoRequest.VideoCodec = "copy";
}
if (state.AudioStream != null && CanStreamCopyAudio(request, state.AudioStream, state.SupportedAudioCodecs))
{
request.AudioCodec = "copy";
}
}
var headers = new Dictionary();
foreach (var key in Request.Headers.AllKeys)
{
headers[key] = Request.Headers[key];
}
state.DeviceProfile = string.IsNullOrWhiteSpace(state.Request.DeviceProfileId) ?
DlnaManager.GetProfile(headers) :
DlnaManager.GetProfile(state.Request.DeviceProfileId);
return state;
}
private bool CanStreamCopyVideo(VideoStreamRequest request, MediaStream videoStream)
{
if (videoStream.IsInterlaced)
{
return false;
}
// Source and target codecs must match
if (!string.Equals(request.VideoCodec, videoStream.Codec, StringComparison.OrdinalIgnoreCase))
{
return false;
}
// If client is requesting a specific video profile, it must match the source
if (!string.IsNullOrEmpty(request.Profile) && !string.Equals(request.Profile, videoStream.Profile, StringComparison.OrdinalIgnoreCase))
{
return false;
}
// Video width must fall within requested value
if (request.MaxWidth.HasValue)
{
if (!videoStream.Width.HasValue || videoStream.Width.Value > request.MaxWidth.Value)
{
return false;
}
}
// Video height must fall within requested value
if (request.MaxHeight.HasValue)
{
if (!videoStream.Height.HasValue || videoStream.Height.Value > request.MaxHeight.Value)
{
return false;
}
}
// Video framerate must fall within requested value
var requestedFramerate = request.MaxFramerate ?? request.Framerate;
if (requestedFramerate.HasValue)
{
var videoFrameRate = videoStream.AverageFrameRate ?? videoStream.RealFrameRate;
if (!videoFrameRate.HasValue || videoFrameRate.Value > requestedFramerate.Value)
{
return false;
}
}
// Video bitrate must fall within requested value
if (request.VideoBitRate.HasValue)
{
if (!videoStream.BitRate.HasValue || videoStream.BitRate.Value > request.VideoBitRate.Value)
{
return false;
}
}
// If a specific level was requested, the source must match or be less than
if (!string.IsNullOrEmpty(request.Level))
{
double requestLevel;
if (double.TryParse(request.Level, NumberStyles.Any, UsCulture, out requestLevel))
{
if (!videoStream.Level.HasValue)
{
return false;
}
if (videoStream.Level.Value > requestLevel)
{
return false;
}
}
}
return request.EnableAutoStreamCopy;
}
private bool CanStreamCopyAudio(StreamRequest request, MediaStream audioStream, List supportedAudioCodecs)
{
// Source and target codecs must match
if (string.IsNullOrEmpty(audioStream.Codec) || !supportedAudioCodecs.Contains(audioStream.Codec, StringComparer.OrdinalIgnoreCase))
{
return false;
}
// Video bitrate must fall within requested value
if (request.AudioBitRate.HasValue)
{
if (!audioStream.BitRate.HasValue || audioStream.BitRate.Value > request.AudioBitRate.Value)
{
return false;
}
}
// Channels must fall within requested value
var channels = request.AudioChannels ?? request.MaxAudioChannels;
if (channels.HasValue)
{
if (!audioStream.Channels.HasValue || audioStream.Channels.Value > channels.Value)
{
return false;
}
}
// Sample rate must fall within requested value
if (request.AudioSampleRate.HasValue)
{
if (!audioStream.SampleRate.HasValue || audioStream.SampleRate.Value > request.AudioSampleRate.Value)
{
return false;
}
}
return true;
}
private void ApplyDeviceProfileSettings(StreamState state)
{
var profile = state.DeviceProfile;
if (profile == null)
{
// Don't use settings from the default profile.
// Only use a specific profile if it was requested.
return;
}
var audioCodec = state.Request.AudioCodec;
if (string.Equals(audioCodec, "copy", StringComparison.OrdinalIgnoreCase) && state.AudioStream != null)
{
audioCodec = state.AudioStream.Codec;
}
var videoCodec = state.VideoRequest == null ? null : state.VideoRequest.VideoCodec;
if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase) && state.VideoStream != null)
{
videoCodec = state.VideoStream.Codec;
}
var mediaProfile = state.VideoRequest == null ?
profile.GetAudioMediaProfile(state.OutputContainer, audioCodec, state.OutputAudioChannels, state.OutputAudioBitrate) :
profile.GetVideoMediaProfile(state.OutputContainer,
audioCodec,
videoCodec,
state.OutputAudioBitrate,
state.OutputAudioChannels,
state.OutputWidth,
state.OutputHeight,
state.TargetVideoBitDepth,
state.OutputVideoBitrate,
state.TargetVideoProfile,
state.TargetVideoLevel,
state.TargetFramerate,
state.TargetPacketLength,
state.TargetTimestamp);
if (mediaProfile != null)
{
state.MimeType = mediaProfile.MimeType;
}
var transcodingProfile = state.VideoRequest == null ?
profile.GetAudioTranscodingProfile(state.OutputContainer, audioCodec) :
profile.GetVideoTranscodingProfile(state.OutputContainer, audioCodec, videoCodec);
if (transcodingProfile != null)
{
state.EstimateContentLength = transcodingProfile.EstimateContentLength;
state.EnableMpegtsM2TsMode = transcodingProfile.EnableMpegtsM2TsMode;
state.TranscodeSeekInfo = transcodingProfile.TranscodeSeekInfo;
if (state.VideoRequest != null && string.IsNullOrWhiteSpace(state.VideoRequest.Profile))
{
state.VideoRequest.Profile = transcodingProfile.VideoProfile;
}
}
}
///
/// Adds the dlna headers.
///
/// The state.
/// The response headers.
/// if set to true [is statically streamed].
/// true if XXXX, false otherwise
protected void AddDlnaHeaders(StreamState state, IDictionary responseHeaders, bool isStaticallyStreamed)
{
var profile = state.DeviceProfile;
if (profile == null)
{
return;
}
var transferMode = GetHeader("transferMode.dlna.org");
responseHeaders["transferMode.dlna.org"] = string.IsNullOrEmpty(transferMode) ? "Streaming" : transferMode;
responseHeaders["realTimeInfo.dlna.org"] = "DLNA.ORG_TLAG=*";
if (state.RunTimeTicks.HasValue && !isStaticallyStreamed)
{
AddTimeSeekResponseHeaders(state, responseHeaders);
}
var audioCodec = state.Request.AudioCodec;
if (state.VideoRequest == null)
{
responseHeaders["contentFeatures.dlna.org"] = new ContentFeatureBuilder(profile)
.BuildAudioHeader(
state.OutputContainer,
audioCodec,
state.OutputAudioBitrate,
state.OutputAudioSampleRate,
state.OutputAudioChannels,
isStaticallyStreamed,
state.RunTimeTicks,
state.TranscodeSeekInfo
);
}
else
{
if (string.Equals(audioCodec, "copy", StringComparison.OrdinalIgnoreCase) && state.AudioStream != null)
{
audioCodec = state.AudioStream.Codec;
}
var videoCodec = state.VideoRequest == null ? null : state.VideoRequest.VideoCodec;
if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase) && state.VideoStream != null)
{
videoCodec = state.VideoStream.Codec;
}
responseHeaders["contentFeatures.dlna.org"] = new ContentFeatureBuilder(profile)
.BuildVideoHeader(
state.OutputContainer,
videoCodec,
audioCodec,
state.OutputWidth,
state.OutputHeight,
state.TargetVideoBitDepth,
state.OutputVideoBitrate,
state.OutputAudioBitrate,
state.OutputAudioChannels,
state.TargetTimestamp,
isStaticallyStreamed,
state.RunTimeTicks,
state.TargetVideoProfile,
state.TargetVideoLevel,
state.TargetFramerate,
state.TargetPacketLength,
state.TranscodeSeekInfo
);
}
foreach (var item in responseHeaders)
{
Request.Response.AddHeader(item.Key, item.Value);
}
}
private void AddTimeSeekResponseHeaders(StreamState state, IDictionary responseHeaders)
{
var runtimeSeconds = TimeSpan.FromTicks(state.RunTimeTicks.Value).TotalSeconds.ToString(UsCulture);
var startSeconds = TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds.ToString(UsCulture);
responseHeaders["TimeSeekRange.dlna.org"] = string.Format("npt={0}-{1}/{1}", startSeconds, runtimeSeconds);
responseHeaders["X-AvailableSeekRange"] = string.Format("1 npt={0}-{1}", startSeconds, runtimeSeconds);
}
///
/// Enforces the resolution limit.
///
/// The state.
/// The video request.
private void EnforceResolutionLimit(StreamState state, VideoStreamRequest videoRequest)
{
// If enabled, allow whatever the client asks for
if (ServerConfigurationManager.Configuration.AllowVideoUpscaling)
{
return;
}
// Switch the incoming params to be ceilings rather than fixed values
videoRequest.MaxWidth = videoRequest.MaxWidth ?? videoRequest.Width;
videoRequest.MaxHeight = videoRequest.MaxHeight ?? videoRequest.Height;
videoRequest.Width = null;
videoRequest.Height = null;
}
protected string GetInputModifier(StreamState state)
{
var inputModifier = string.Empty;
var probeSize = GetProbeSizeArgument(state.MediaPath, state.IsInputVideo, state.VideoType, state.IsoType);
inputModifier += " " + probeSize;
inputModifier = inputModifier.Trim();
inputModifier += " " + GetUserAgentParam(state.MediaPath);
inputModifier = inputModifier.Trim();
inputModifier += " " + GetFastSeekCommandLineParameter(state.Request);
inputModifier = inputModifier.Trim();
if (state.VideoRequest != null)
{
inputModifier += " -fflags genpts";
}
if (!string.IsNullOrEmpty(state.InputFormat))
{
inputModifier += " -f " + state.InputFormat;
}
if (!string.IsNullOrEmpty(state.InputVideoCodec))
{
inputModifier += " -vcodec " + state.InputVideoCodec;
}
if (!string.IsNullOrEmpty(state.InputAudioCodec))
{
inputModifier += " -acodec " + state.InputAudioCodec;
}
if (!string.IsNullOrEmpty(state.InputAudioSync))
{
inputModifier += " -async " + state.InputAudioSync;
}
if (!string.IsNullOrEmpty(state.InputVideoSync))
{
inputModifier += " -vsync " + state.InputVideoSync;
}
if (state.ReadInputAtNativeFramerate)
{
inputModifier += " -re";
}
return inputModifier;
}
///
/// Infers the audio codec based on the url
///
/// The URL.
/// System.Nullable{AudioCodecs}.
private string InferAudioCodec(string url)
{
var ext = Path.GetExtension(url);
if (string.Equals(ext, ".mp3", StringComparison.OrdinalIgnoreCase))
{
return "mp3";
}
if (string.Equals(ext, ".aac", StringComparison.OrdinalIgnoreCase))
{
return "aac";
}
if (string.Equals(ext, ".wma", StringComparison.OrdinalIgnoreCase))
{
return "wma";
}
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase))
{
return "vorbis";
}
if (string.Equals(ext, ".oga", StringComparison.OrdinalIgnoreCase))
{
return "vorbis";
}
if (string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
{
return "vorbis";
}
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
{
return "vorbis";
}
if (string.Equals(ext, ".webma", StringComparison.OrdinalIgnoreCase))
{
return "vorbis";
}
return "copy";
}
///
/// Infers the video codec.
///
/// The URL.
/// System.Nullable{VideoCodecs}.
private string InferVideoCodec(string url)
{
var ext = Path.GetExtension(url);
if (string.Equals(ext, ".asf", StringComparison.OrdinalIgnoreCase))
{
return "wmv";
}
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
{
return "vpx";
}
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
{
return "theora";
}
if (string.Equals(ext, ".m3u8", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ts", StringComparison.OrdinalIgnoreCase))
{
return "h264";
}
return "copy";
}
}
}