/// <summary>
/// Writes a Subtitle Packet to a Stream.
/// </summary>
/// <param name="Writer">The writer of the output Stream</param>
/// <param name="Packet">The packet to be written</param>
public static void ToStream(EndianBinaryWriter Writer, SubtitlePacket Packet)
{
using (MemoryStream Content = new MemoryStream())
{
EndianBinaryWriter CWriter = new EndianBinaryWriter(Content, Writer.Endian);
foreach (SubtitlePacketText Text in Packet.Texts)
{
SubtitlePacketText.ToStream(CWriter, Text);
}
int Length = (int)Content.Length + 0x14 + 1;
if ((Length & 0xf) != 0)
{
Length = (Length & ~0xf) + 0x10;
}
Writer.Endian = Endian.Little;
Writer.Write(0u);
Writer.Write(Length);
Writer.Write(Packet.BaseStartTime);
Writer.Endian = Endian.Big;
Writer.Write(0u);
Writer.Write((int)Content.Length);
Writer.Write(Content.ToArray());
Writer.Write((byte)0);
while ((Writer.BaseStream.Position & 0xf) != 0)
{
Writer.Write((byte)0);
}
}
}
/// <summary>
/// Reads a Subtitle Packet from a Stream.
/// </summary>
/// <param name="Reader">The reader of the Stream where the data is located</param>
/// <returns>The packet as a object</returns>
public static SubtitlePacket FromStream(EndianBinaryReader Reader)
{
SubtitlePacket Packet = new SubtitlePacket();
long BasePosition = Reader.BaseStream.Position;
Reader.Endian = Endian.Little;
uint Signature = Reader.ReadUInt32();
uint PacketLength = Reader.ReadUInt32();
long EndPosition = BasePosition + PacketLength;
if (PacketLength == 0 || Signature != 0)
{
return(null);
}
Packet.BaseStartTime = Reader.ReadUInt32();
Reader.Endian = Endian.Big;
uint Dummy = Reader.ReadUInt32();
uint DataLength = Reader.ReadUInt32();
while (Reader.BaseStream.Position + 0x10 < EndPosition)
{
Packet.Texts.Add(SubtitlePacketText.FromStream(Reader));
}
Reader.Seek(EndPosition, SeekOrigin.Begin);
return(Packet);
}
/// <summary>
/// Writes a Subtitle Packet to a Byte Array.
/// </summary>
/// <param name="Packet">The packet to be written</param>
/// <returns>The array with the data</returns>
public static byte[] ToBytes(SubtitlePacket Packet)
{
using (MemoryStream Output = new MemoryStream())
{
EndianBinaryWriter Writer = new EndianBinaryWriter(Output, Endian.Big);
ToStream(Writer, Packet);
return(Output.ToArray());
}
}
