/// <summary>
/// Create a PMT for the program.
/// </summary>
/// <remarks>
/// There will be a lot of randomly choosen values just to make the transport
/// stream valid. Each audio stream will be reported as <i>german</i> and
/// similiar defaults are attached to a teletext stream.
/// </remarks>
/// <returns>The table describing the related program.</returns>
protected override byte[] CreateTable()
{
// Create buffer
TableConstructor buffer = new TableConstructor();
// Append to buffer
buffer.Add( (byte) (0xe0 | (PCRPID / 256)) );
buffer.Add( (byte) (PCRPID & 0xff) );
buffer.Add( 0xf0, 0x00 );
// All entries
for (int ip = 0; ip < m_Streams.Count; )
{
// Load
short pid = m_Streams[ip++];
StreamTypes type = m_Type[pid];
// Is teletext or audio
bool ttx = (StreamTypes.TeleText == type);
bool sub = !ttx && (StreamTypes.SubTitles == type);
bool ac3 = !ttx && !sub && (StreamTypes.Private == type);
bool aud = ac3 || (!ttx && !sub && (StreamTypes.Audio == type));
// Append to buffer
buffer.Add( (ttx || sub) ? (byte) StreamTypes.Private : m_Encoding[pid] );
buffer.Add( (byte) (0xe0 | (pid / 256)) );
buffer.Add( (byte) (pid & 0xff) );
buffer.Add( 0xf0 );
// Length
int lengthPos = buffer.CreateDynamicLength();
// Create stream identifier
buffer.Add( new StreamIdentifier( (byte) ip ) );
// Check for additional data
if (ttx)
{
// Create teletext descriptor
buffer.Add( new Teletext() );
}
else if (sub)
{
// Load descriptor list
SubtitleInfo[] subInfos = DVBSubtitles[pid];
// Create the descriptor
Subtitle subDescr = new Subtitle();
// Check mode
if ((null == subInfos) || (subInfos.Length < 1))
{
// Create a brand new pseudo entry
subDescr.Subtitles.Add( new SubtitleInfo( "deu", EPG.SubtitleTypes.DVBNormal, 1, 1 ) );
}
else
{
// Use as is
subDescr.Subtitles.AddRange( subInfos );
}
// Serialize to buffer
buffer.Add( subDescr );
}
else if (aud)
{
// Load language
string language;
if (!m_AudioNames.TryGetValue( pid, out language )) language = "deu";
// Create language descriptor
ISOLanguage audioDescriptor = new ISOLanguage();
// Append language item
audioDescriptor.Languages.Add( new LanguageItem( language, ac3 ? EPG.AudioTypes.Undefined : EPG.AudioTypes.CleanEffects ) );
// Append to buffer
buffer.Add( audioDescriptor );
// Fill AC3 descriptor
if (ac3)
buffer.Add( new AC3() );
}
// Finish
buffer.SetDynamicLength( lengthPos );
}
// Report
return buffer.ToArray();
}