public override void BeginPlaying(MHEngine engine)
{
m_fStreamPlaying = true;
if (m_fRunning && m_streamContentRef.IsSet())
{
string stream = "";
MHOctetString str = m_streamContentRef.ContentRef;
if (str.Size != 0)
{
stream = str.ToString();
}
engine.GetContext().BeginVideo(stream, m_nComponentTag);
}
}
public override void Activation(MHEngine engine)
{
if (m_fRunning)
{
return;
}
base.Activation(engine);
if (m_fStreamPlaying && m_streamContentRef.IsSet())
{
string stream = "";
MHOctetString str = m_streamContentRef.ContentRef;
if (str.Size != 0)
{
stream = str.ToString();
}
engine.GetContext().BeginVideo(stream, m_nComponentTag);
}
}
public virtual void SI_GetServiceIndex(MHObjectRef success, MHSequence <MHParameter> args, MHEngine engine)
{
// Returns an index indicating the service
if (args.Size == 2)
{
MHOctetString str = new MHOctetString();
GetString(args.GetAt(0), str, engine);
MHParameter pResInt = args.GetAt(1);
// The format of the service is dvb://netID.[transPortID].serviceID
// where the IDs are in hex.
// or rec://svc/lcn/N where N is the "logical channel number" i.e. the Freeview channel.
int nResult = engine.GetContext().GetChannelIndex(str.ToString());
engine.FindObject(pResInt.GetReference()).SetVariableValue(new MHUnion(nResult));
Logging.Log(Logging.MHLogDetail, "Get service index for " + str.Printable() + " - result " + nResult);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
// Activation for Audio is defined in the corrigendum
public override void Activation(MHEngine engine)
{
if (m_fRunning)
{
return;
}
base.Activation(engine);
// Beginning presentation is started by the Stream object.
m_fRunning = true;
engine.EventTriggered(this, EventIsRunning);
if (m_fStreamPlaying && m_streamContentRef.IsSet())
{
string stream = "";
MHOctetString str = m_streamContentRef.ContentRef;
if (str.Size != 0)
{
stream = str.ToString();
}
engine.GetContext().BeginAudio(stream, m_nComponentTag);
}
}
// UK MHEG. Interpret the font attributes.
protected void InterpretAttributes(MHOctetString attrs, out int style, out int size, out int lineSpace, out int letterSpace)
{
// Set the defaults.
style = 0; size = 0x18; lineSpace = 0x18; letterSpace = 0;
if (attrs.Size == 5) // Short form.
{
style = attrs.GetAt(0); // Only the bottom nibble is significant.
size = attrs.GetAt(1);
lineSpace = attrs.GetAt(2);
// Is this big-endian or little-endian? Assume big.
letterSpace = attrs.GetAt(3) * 256 + attrs.GetAt(4);
if (letterSpace > 32767)
{
letterSpace -= 65536; // Signed.
}
}
else // Textual form.
{
String str = attrs.ToString() + ".";
Logging.Assert(str != null);
int q = str.IndexOf('.'); // Find the terminating dot
if (q != -1) // plain, italic etc.
{
string type = str.Substring(0, q);
str = str.Substring(q + 1);
if (type.Equals("italic"))
{
style = 1;
}
else if (type.Equals("bold"))
{
style = 2;
}
else if (type.Equals("bold-italic"))
{
style = 3;
}
// else it's plain.
q = str.IndexOf('.');
}
if (q != -1) // Size
{
string s = str.Substring(0, q);
str = str.Substring(q + 1);
size = Convert.ToInt32(s);
if (size == 0)
{
size = 0x18;
}
q = str.IndexOf('.'); // Find the next dot.
}
if (q != -1) // lineSpacing
{
string ls = str.Substring(0, q);
str = str.Substring(q + 1);
lineSpace = Convert.ToInt32(ls);
if (lineSpace == 0)
{
size = 0x18;
}
q = str.IndexOf('.'); // Find the next dot.
}
if (q != -1) // letter spacing. May be zero or negative
{
string ls = str.Substring(0, q);
letterSpace = Convert.ToInt32(ls);
}
}
}