private static void AddPesPacket(List <DvbSubPes> list, List <Packet> packetList)
{
int bufferSize = 0;
foreach (var p in packetList)
{
bufferSize += p.Payload.Length;
}
var pesData = new byte[bufferSize];
int pesIndex = 0;
foreach (var p in packetList)
{
Buffer.BlockCopy(p.Payload, 0, pesData, pesIndex, p.Payload.Length);
pesIndex += p.Payload.Length;
}
DvbSubPes pes;
if (VobSubParser.IsMpeg2PackHeader(pesData))
{
pes = new DvbSubPes(pesData, Mpeg2Header.Length);
}
else if (VobSubParser.IsPrivateStream1(pesData, 0))
{
pes = new DvbSubPes(pesData, 0);
}
else
{
pes = new DvbSubPes(pesData, 0);
}
list.Add(pes);
}
public static bool IsVobSub(string fileName)
{
using (var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
var buffer = new byte[4];
fs.Read(buffer, 0, buffer.Length);
return(VobSubParser.IsMpeg2PackHeader(buffer) ||
VobSubParser.IsPrivateStream1(buffer, 0));
}
}
public VobSubPack(byte[] buffer, IdxParagraph idxLine)
{
_buffer = buffer;
IdxLine = idxLine;
if (VobSubParser.IsMpeg2PackHeader(buffer))
{
Mpeg2Header = new Mpeg2Header(buffer);
PacketizedElementaryStream = new PacketizedElementaryStream(buffer, Mpeg2Header.Length);
}
else if (VobSubParser.IsPrivateStream1(buffer, 0))
{
PacketizedElementaryStream = new PacketizedElementaryStream(buffer, 0);
}
}
/// <summary>
/// Can be used with e.g. MemoryStream or FileStream
/// </summary>
/// <param name="ms">Input stream</param>
public void Parse(Stream ms)
{
var dataIndices = GetDataIndicesAndPesStart(ms, out var dvbPesStartIndex);
if (dvbPesStartIndex <= 0)
{
return;
}
ms.Position = 0;
foreach (var dataIndex in dataIndices)
{
ms.Seek(dvbPesStartIndex + dataIndex.Offset, SeekOrigin.Begin);
var pesData = new byte[dataIndex.Length];
var bytesRead = ms.Read(pesData, 0, pesData.Length);
if (bytesRead < pesData.Length)
{
break; // incomplete packet at end-of-file
}
DvbSubPes pes;
if (VobSubParser.IsMpeg2PackHeader(pesData))
{
pes = new DvbSubPes(pesData, Mpeg2Header.Length);
}
else if (VobSubParser.IsPrivateStream1(pesData, 0))
{
pes = new DvbSubPes(pesData, 0);
}
else
{
pes = new DvbSubPes(0, pesData);
}
pes.PresentationTimestamp = dataIndex.Pts;
_dvbSubs.Add(pes);
}
}
