/// <summary>
/// Enters the CI menu
/// </summary>
/// <returns></returns>
public bool EnterCIMenu()
{
IKsControl pControl = CiFilter as IKsControl;
if (pControl == null)
{
return(false);
}
KSMETHOD KsMethod = new KSMETHOD(KSMETHODSET_DD_CAM_CONTROL,
(Int32)KSMETHOD_DD_CAM_CONTROL.KSMETHOD_DD_CAM_ENTER_MENU,
KSMETHOD_TYPE_SEND);
Int32 dwReturned = 0;
Int32 hr = pControl.KsMethod(ref KsMethod, Marshal.SizeOf(KsMethod),
IntPtr.Zero, 0,
ref dwReturned
);
if (hr == 0)
{
_MenuId = 0; // reset
}
return(hr == 0);
}
/// <summary>
/// Sends an answer after CI request
/// </summary>
/// <param name="Cancel">true to cancel</param>
/// <param name="Answer">Answer string</param>
/// <returns></returns>
public bool SendMenuAnswer(bool Cancel, string Answer)
{
IKsControl pControl = CiFilter as IKsControl;
if (pControl == null)
{
return(false);
}
// Initialize unmanged memory to hold the struct.
Int32 answerLength = (String.IsNullOrEmpty(Answer) ? 0 : Answer.Length);
Int32 bufferSize = 8 + answerLength + 1;
if (bufferSize < 12)
{
bufferSize = 12;
}
IntPtr pReply = Marshal.AllocHGlobal(bufferSize);
try
{
// Copy the struct to unmanaged memory.
Marshal.WriteInt32(pReply, 0, _MenuId);
if (answerLength > 0)
{
Marshal.WriteInt32(pReply, 4, (int)Answer.Length);
for (int i = 0; i < Answer.Length; i += 1)
{
Marshal.WriteByte(pReply, 8 + i, (byte)Answer[i]);
}
Marshal.WriteByte(pReply, 8 + Answer.Length, 0);
}
else
{
Marshal.WriteInt32(pReply, 4, 0);
}
//DVB_MMI.DumpBinary(pReply, 0, bufferSize);
KSMETHOD KsMethod = new KSMETHOD(KSMETHODSET_DD_CAM_CONTROL,
(Int32)KSMETHOD_DD_CAM_CONTROL.KSMETHOD_DD_CAM_ANSWER,
KSMETHOD_TYPE_SEND);
Int32 dwReturned = 0;
Int32 hr = pControl.KsMethod(ref KsMethod, Marshal.SizeOf(KsMethod),
pReply, bufferSize,
ref dwReturned
);
return(hr == 0);
}
finally
{
// Free the unmanaged memory.
Marshal.FreeHGlobal(pReply);
}
}
/// <summary>
/// Resets the CAM.
/// </summary>
/// <returns></returns>
public bool ResetCAM()
{
IKsControl pControl = CiFilter as IKsControl;
if (pControl == null)
{
return(false);
}
KSMETHOD KsMethod = new KSMETHOD(KSMETHODSET_DD_CAM_CONTROL,
(Int32)KSMETHOD_DD_CAM_CONTROL.KSMETHOD_DD_CAM_RESET,
KSMETHOD_TYPE_SEND);
Int32 dwReturned = 0;
Int32 hr = pControl.KsMethod(ref KsMethod, Marshal.SizeOf(KsMethod),
IntPtr.Zero, 0,
ref dwReturned
);
return(hr == 0);
}
/// <summary>
/// Selects a CI menu entry
/// </summary>
/// <param name="choice">choice</param>
/// <returns></returns>
public bool SelectMenu(byte choice)
{
IKsControl pControl = CiFilter as IKsControl;
if (pControl == null)
{
return(false);
}
DD_CAM_MENU_REPLY Reply;
Reply.Id = _MenuId;
Reply.Choice = choice;
// Initialize unmanged memory to hold the struct.
IntPtr pReply = Marshal.AllocHGlobal(Marshal.SizeOf(Reply));
try
{
// Copy the struct to unmanaged memory.
Marshal.StructureToPtr(Reply, pReply, false);
KSMETHOD KsMethod = new KSMETHOD(KSMETHODSET_DD_CAM_CONTROL,
(Int32)KSMETHOD_DD_CAM_CONTROL.KSMETHOD_DD_CAM_MENU_REPLY,
KSMETHOD_TYPE_SEND);
Int32 dwReturned = 0;
Int32 hr = pControl.KsMethod(ref KsMethod, Marshal.SizeOf(KsMethod),
pReply, Marshal.SizeOf(Reply),
ref dwReturned
);
return(hr == 0);
}
finally
{
// Free the unmanaged memory.
Marshal.FreeHGlobal(pReply);
}
}
private bool GetCamMenuText(out DD_CAM_MENU_DATA CiMenu)
{
CiMenu = new DD_CAM_MENU_DATA();
IKsControl pControl = CiFilter as IKsControl;
if (pControl == null)
{
return(false);
}
// Initialize unmanged memory to hold the struct.
Int32 ulMenuSize = 2048;
IntPtr pCiMenu = Marshal.AllocHGlobal(ulMenuSize);
try
{
KSMETHOD KsMethod = new KSMETHOD(KSMETHODSET_DD_CAM_CONTROL,
(Int32)KSMETHOD_DD_CAM_CONTROL.KSMETHOD_DD_CAM_GET_MENU,
KSMETHOD_TYPE_SEND);
Int32 dwReturned = 0;
Int32 hr = pControl.KsMethod(ref KsMethod, Marshal.SizeOf(KsMethod),
pCiMenu, ulMenuSize,
ref dwReturned
);
if (hr == 0)
{
Int32 offs = 0;
CiMenu.Id = Marshal.ReadInt32(pCiMenu, offs);
offs += 4;
CiMenu.Type = Marshal.ReadInt32(pCiMenu, offs);
offs += 4;
CiMenu.NumChoices = Marshal.ReadInt32(pCiMenu, offs);
offs += 4;
CiMenu.Length = Marshal.ReadInt32(pCiMenu, offs);
offs += 4;
// check if we already received this menu, then ignore it.
// otherwise we would do an endless processing.
if (CiMenu.Id == _MenuId)
{
return(false);
}
//DVB_MMI.DumpBinary(pCiMenu, 0, dwReturned);
CiMenu.Choices = new List <String>();
for (int i = 0; i < CiMenu.NumChoices + 3; i++)
{
IntPtr newPtr = new IntPtr(pCiMenu.ToInt32() + offs);
String choice = Marshal.PtrToStringAnsi(newPtr);
switch (i)
{
case 0:
CiMenu.Title = choice;
break;
case 1:
CiMenu.SubTitle = choice;
break;
case 2:
CiMenu.BottomText = choice;
break;
default:
CiMenu.Choices.Add(choice);
break;
}
offs += choice.Length + 1;
}
// remember current received menu id
_MenuId = CiMenu.Id;
}
//else
// Marshal.ThrowExceptionForHR(hr);
return(hr == 0);
}
finally
{
// Free the unmanaged memory.
Marshal.FreeHGlobal(pCiMenu);
}
}