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.Entities.Audio ;
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 ;
using MediaBrowser.Model.MediaInfo ;
namespace MediaBrowser.Api.Playback
{
/// <summary>
/// Class BaseStreamingService
/// </summary>
public abstract class BaseStreamingService : BaseApiService
{
/// <summary>
/// Gets or sets the application paths.
/// </summary>
/// <value>The application paths.</value>
protected IServerConfigurationManager ServerConfigurationManager { get ; private set ; }
/// <summary>
/// Gets or sets the user manager.
/// </summary>
/// <value>The user manager.</value>
protected IUserManager UserManager { get ; private set ; }
/// <summary>
/// Gets or sets the library manager.
/// </summary>
/// <value>The library manager.</value>
protected ILibraryManager LibraryManager { get ; private set ; }
/// <summary>
/// Gets or sets the iso manager.
/// </summary>
/// <value>The iso manager.</value>
protected IIsoManager IsoManager { get ; private set ; }
/// <summary>
/// Gets or sets the media encoder.
/// </summary>
/// <value>The media encoder.</value>
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 ; }
/// <summary>
/// Initializes a new instance of the <see cref="BaseStreamingService" /> class.
/// </summary>
/// <param name="serverConfig">The server configuration.</param>
/// <param name="userManager">The user manager.</param>
/// <param name="libraryManager">The library manager.</param>
/// <param name="isoManager">The iso manager.</param>
/// <param name="mediaEncoder">The media encoder.</param>
/// <param name="dtoService">The dto service.</param>
/// <param name="fileSystem">The file system.</param>
/// <param name="itemRepository">The item repository.</param>
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 ;
}
/// <summary>
/// Gets the command line arguments.
/// </summary>
/// <param name="outputPath">The output path.</param>
/// <param name="state">The state.</param>
/// <param name="performSubtitleConversions">if set to <c>true</c> [perform subtitle conversions].</param>
/// <returns>System.String.</returns>
protected abstract string GetCommandLineArguments ( string outputPath , StreamState state , bool performSubtitleConversions ) ;
/// <summary>
/// Gets the type of the transcoding job.
/// </summary>
/// <value>The type of the transcoding job.</value>
protected abstract TranscodingJobType TranscodingJobType { get ; }
/// <summary>
/// Gets the output file extension.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
protected virtual string GetOutputFileExtension ( StreamState state )
{
return Path . GetExtension ( state . RequestedUrl ) ;
}
/// <summary>
/// Gets the output file path.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
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" ) ;
/// <summary>
/// Gets the fast seek command line parameter.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.String.</returns>
/// <value>The fast seek command line parameter.</value>
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 ;
}
/// <summary>
/// Gets the map args.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
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 ;
}
/// <summary>
/// Determines which stream will be used for playback
/// </summary>
/// <param name="allStream">All stream.</param>
/// <param name="desiredIndex">Index of the desired.</param>
/// <param name="type">The type.</param>
/// <param name="returnFirstIfNoIndex">if set to <c>true</c> [return first if no index].</param>
/// <returns>MediaStream.</returns>
private MediaStream GetMediaStream ( IEnumerable < MediaStream > 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 ;
}
/// <summary>
/// Gets the number of threads.
/// </summary>
/// <returns>System.Int32.</returns>
/// <exception cref="System.Exception">Unrecognized MediaEncodingQuality value.</exception>
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." ) ;
}
}
/// <summary>
/// Gets the video bitrate to specify on the command line
/// </summary>
/// <param name="state">The state.</param>
/// <param name="videoCodec">The video codec.</param>
/// <param name="isHls">if set to <c>true</c> [is HLS].</param>
/// <returns>System.String.</returns>
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 ) ;
}
/// <summary>
/// If we're going to put a fixed size on the command line, this will calculate it
/// </summary>
/// <param name="state">The state.</param>
/// <param name="outputVideoCodec">The output video codec.</param>
/// <param name="performTextSubtitleConversion">if set to <c>true</c> [perform text subtitle conversion].</param>
/// <returns>System.String.</returns>
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 ) ;
}
/// <summary>
/// Gets the text subtitle param.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="performConversion">if set to <c>true</c> [perform conversion].</param>
/// <returns>System.String.</returns>
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 ) ) ;
}
/// <summary>
/// Gets the extracted ass path.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="performConversion">if set to <c>true</c> [perform conversion].</param>
/// <returns>System.String.</returns>
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 ;
}
/// <summary>
/// Gets the converted ass path.
/// </summary>
/// <param name="mediaPath">The media path.</param>
/// <param name="subtitleStream">The subtitle stream.</param>
/// <param name="performConversion">if set to <c>true</c> [perform conversion].</param>
/// <returns>System.String.</returns>
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 ;
}
/// <summary>
/// Gets the internal graphical subtitle param.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="outputVideoCodec">The output video codec.</param>
/// <returns>System.String.</returns>
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 ) ;
}
/// <summary>
/// Gets the probe size argument.
/// </summary>
/// <param name="mediaPath">The media path.</param>
/// <param name="isVideo">if set to <c>true</c> [is video].</param>
/// <param name="videoType">Type of the video.</param>
/// <param name="isoType">Type of the iso.</param>
/// <returns>System.String.</returns>
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 ) ;
}
/// <summary>
/// Gets the number of audio channels to specify on the command line
/// </summary>
/// <param name="request">The request.</param>
/// <param name="audioStream">The audio stream.</param>
/// <returns>System.Nullable{System.Int32}.</returns>
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 ;
}
/// <summary>
/// Determines whether the specified stream is H264.
/// </summary>
/// <param name="stream">The stream.</param>
/// <returns><c>true</c> if the specified stream is H264; otherwise, <c>false</c>.</returns>
protected bool IsH264 ( MediaStream stream )
{
return stream . Codec . IndexOf ( "264" , StringComparison . OrdinalIgnoreCase ) ! = - 1 | |
stream . Codec . IndexOf ( "avc" , StringComparison . OrdinalIgnoreCase ) ! = - 1 ;
}
/// <summary>
/// Gets the name of the output audio codec
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.String.</returns>
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 ( ) ;
}
/// <summary>
/// Gets the name of the output video codec
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.String.</returns>
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" ;
}
/// <summary>
/// Gets the input argument.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
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 ) ;
}
/// <summary>
/// Starts the FFMPEG.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="outputPath">The output path.</param>
/// <returns>Task.</returns>
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 ;
}
/// <summary>
/// Gets the user agent param.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>System.String.</returns>
private string GetUserAgentParam ( string path )
{
var useragent = GetUserAgent ( path ) ;
if ( ! string . IsNullOrEmpty ( useragent ) )
{
return "-user-agent \"" + useragent + "\"" ;
}
return string . Empty ;
}
/// <summary>
/// Gets the user agent.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>System.String.</returns>
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 ;
}
/// <summary>
/// Processes the exited.
/// </summary>
/// <param name="process">The process.</param>
/// <param name="state">The state.</param>
protected void OnFfMpegProcessExited ( Process process , StreamState state )
{
state . Dispose ( ) ;
try
{
Logger . Info ( "FFMpeg exited with code {0}" , process . ExitCode ) ;
}
catch
{
Logger . Info ( "FFMpeg exited with an error." ) ;
}
}
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 ;
}
/// <summary>
/// Parses the parameters.
/// </summary>
/// <param name="request">The request.</param>
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 ;
}
}
}
}
/// <summary>
/// Parses the dlna headers.
/// </summary>
/// <param name="request">The request.</param>
private void ParseDlnaHeaders ( StreamRequest request )
{
if ( ! request . StartTimeTicks . HasValue )
{
var timeSeek = GetHeader ( "TimeSeekRange.dlna.org" ) ;
request . StartTimeTicks = ParseTimeSeekHeader ( timeSeek ) ;
}
}
/// <summary>
/// Parses the time seek header.
/// </summary>
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 ;
}
/// <summary>
/// Gets the state.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>StreamState.</returns>
protected async Task < StreamState > 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 ) ?
LibraryManager . GetItemById ( request . Id ) :
LibraryManager . GetItemById ( 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 < string > ( ) ;
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" ;
state . InputContainer = recording . Container ;
}
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 < string > ( ) ;
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 < string > ( )
: video . PlayableStreamFileNames . ToList ( ) ;
state . DeInterlace = string . Equals ( video . Container , "wtv" , StringComparison . OrdinalIgnoreCase ) ;
state . InputTimestamp = video . Timestamp ? ? TransportStreamTimestamp . None ;
state . InputContainer = video . Container ;
}
var audio = item as Audio ;
if ( audio ! = null )
{
state . InputContainer = audio . Container ;
}
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 = request . Static ? state . InputContainer : Path . GetExtension ( GetOutputFilePath ( state ) ) ;
}
state . OutputContainer = ( container ? ? string . Empty ) . TrimStart ( '.' ) ;
ApplyDeviceProfileSettings ( state ) ;
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 < string , string > ( ) ;
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 < string > 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 ;
}
}
}
/// <summary>
/// Adds the dlna headers.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="responseHeaders">The response headers.</param>
/// <param name="isStaticallyStreamed">if set to <c>true</c> [is statically streamed].</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
protected void AddDlnaHeaders ( StreamState state , IDictionary < string , string > 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 < string , string > 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 ) ;
}
/// <summary>
/// Enforces the resolution limit.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="videoRequest">The video request.</param>
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 ;
}
/// <summary>
/// Infers the audio codec based on the url
/// </summary>
/// <param name="url">The URL.</param>
/// <returns>System.Nullable{AudioCodecs}.</returns>
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" ;
}
/// <summary>
/// Infers the video codec.
/// </summary>
/// <param name="url">The URL.</param>
/// <returns>System.Nullable{VideoCodecs}.</returns>
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" ;
}
}
}