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using System ;
namespace MediaBrowser.Model.Dlna
{
public class ContentFeatureBuilder
{
private readonly DeviceProfile _profile ;
public ContentFeatureBuilder ( DeviceProfile profile )
{
_profile = profile ;
}
public string BuildAudioHeader ( string container ,
string audioCodec ,
int? audioBitrate ,
int? audioSampleRate ,
int? audioChannels ,
bool isDirectStream ,
long? runtimeTicks ,
TranscodeSeekInfo transcodeSeekInfo )
{
// first bit means Time based seek supported, second byte range seek supported (not sure about the order now), so 01 = only byte seek, 10 = time based, 11 = both, 00 = none
var orgOp = ";DLNA.ORG_OP=" + DlnaMaps . GetOrgOpValue ( runtimeTicks . HasValue , isDirectStream , transcodeSeekInfo ) ;
// 0 = native, 1 = transcoded
var orgCi = isDirectStream ? ";DLNA.ORG_CI=0" : ";DLNA.ORG_CI=1" ;
var flagValue = DlnaFlags . StreamingTransferMode |
DlnaFlags . BackgroundTransferMode |
DlnaFlags . DlnaV15 ;
if ( isDirectStream )
{
//flagValue = flagValue | DlnaFlags.DLNA_ORG_FLAG_BYTE_BASED_SEEK;
}
else if ( runtimeTicks . HasValue )
{
//flagValue = flagValue | DlnaFlags.DLNA_ORG_FLAG_TIME_BASED_SEEK;
}
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var dlnaflags = string . Format ( ";DLNA.ORG_FLAGS={0}" ,
FlagsToString ( flagValue ) ) ;
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var mediaProfile = _profile . GetAudioMediaProfile ( container , audioCodec ) ;
var orgPn = mediaProfile = = null ? null : mediaProfile . OrgPn ;
if ( string . IsNullOrEmpty ( orgPn ) )
{
orgPn = GetAudioOrgPnValue ( container , audioBitrate , audioSampleRate , audioChannels ) ;
}
var contentFeatures = string . IsNullOrEmpty ( orgPn ) ? string . Empty : "DLNA.ORG_PN=" + orgPn ;
return ( contentFeatures + orgOp + orgCi + dlnaflags ) . Trim ( ';' ) ;
}
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private static string FlagsToString ( DlnaFlags flags )
{
//return Enum.Format(typeof(DlnaFlags), flags, "x");
return string . Format ( "{0:X8}{1:D24}" , ( ulong ) flags , 0 ) ;
}
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public string BuildVideoHeader ( string container ,
string videoCodec ,
string audioCodec ,
int? width ,
int? height ,
int? bitrate ,
TransportStreamTimestamp timestamp ,
bool isDirectStream ,
long? runtimeTicks ,
TranscodeSeekInfo transcodeSeekInfo )
{
// first bit means Time based seek supported, second byte range seek supported (not sure about the order now), so 01 = only byte seek, 10 = time based, 11 = both, 00 = none
var orgOp = ";DLNA.ORG_OP=" + DlnaMaps . GetOrgOpValue ( runtimeTicks . HasValue , isDirectStream , transcodeSeekInfo ) ;
// 0 = native, 1 = transcoded
var orgCi = isDirectStream ? ";DLNA.ORG_CI=0" : ";DLNA.ORG_CI=1" ;
var flagValue = DlnaFlags . StreamingTransferMode |
DlnaFlags . BackgroundTransferMode |
DlnaFlags . DlnaV15 ;
if ( isDirectStream )
{
//flagValue = flagValue | DlnaFlags.DLNA_ORG_FLAG_BYTE_BASED_SEEK;
}
else if ( runtimeTicks . HasValue )
{
//flagValue = flagValue | DlnaFlags.DLNA_ORG_FLAG_TIME_BASED_SEEK;
}
var dlnaflags = string . Format ( ";DLNA.ORG_FLAGS={0}000000000000000000000000" ,
Enum . Format ( typeof ( DlnaFlags ) , flagValue , "x" ) ) ;
var mediaProfile = _profile . GetVideoMediaProfile ( container , audioCodec , videoCodec ) ;
var orgPn = mediaProfile = = null ? null : mediaProfile . OrgPn ;
if ( string . IsNullOrEmpty ( orgPn ) )
{
orgPn = GetVideoOrgPnValue ( container , videoCodec , audioCodec , width , height , bitrate , timestamp ) ;
}
var contentFeatures = string . IsNullOrEmpty ( orgPn ) ? string . Empty : "DLNA.ORG_PN=" + orgPn ;
return ( contentFeatures + orgOp + orgCi + dlnaflags ) . Trim ( ';' ) ;
}
private string GetAudioOrgPnValue ( string container , int? audioBitrate , int? audioSampleRate , int? audioChannels )
{
var format = new MediaFormatProfileResolver ( )
. ResolveAudioFormat ( container ,
audioBitrate ,
audioSampleRate ,
audioChannels ) ;
return format . HasValue ? format . Value . ToString ( ) : null ;
}
private string GetVideoOrgPnValue ( string container , string videoCodec , string audioCodec , int? width , int? height , int? bitrate , TransportStreamTimestamp timestamp )
{
var videoFormat = new MediaFormatProfileResolver ( )
. ResolveVideoFormat ( container ,
videoCodec ,
audioCodec ,
width ,
height ,
bitrate ,
timestamp ) ;
return videoFormat . HasValue ? videoFormat . Value . ToString ( ) : null ;
}
}
}