Sound Playing Problem (C#)

[bvl]

Hi there,

i use C# to develope a simple Software for my FS2004.

I works very well, i can read and write anything i want, but i have a Problem with playing Sounds.

 

This is what i do:

 

I read one Byte (FSUIPC_Read, then FSUIPC_Get)  at 0x4200 and get the Information: "FREE".

Second i set (FSUIPC_Write) the filename 737LP at 0x4208 (through an Array of 248 Bytes).

The file 737LP exists in the Sound Directory of my FS2004 Installation.

The Array contains the following values: 55, 51, 55, 76, 80, 46, 87, 65, 86, and the rest of the Array contains only 0 values.

Third i set (FSUIPC_Write) the command PLAY_LOOP as a Byte with value 2 at 0x4200.

Fourth i use the command FSUIPC_Process (it returns 0 as result, so all should be ok)

 

But the sound does not play. After reading 0x4200 i get "PLAY_LOOP" ever and ever again.

I think i miss something, but i don't know what. Perhaps someone can help me, perhaps has a simple example for me that i can use to check if it works.

 

Thanks in advance,

Bodo

[Paul Henty]

Hi Bodo,

 

Reading the protocol it seems that the reference number at 4204 is also required:

 

4204 DWORD:  REFERENCE as 32-bit non-zero integer.
The application can use this how it likes, but it should be unique,
otherwise the same sound is referenced.

 

Try writing a number there as well (before 0x4200 of course).

 

Paul

[bvl]

Hi Paul, hi Forum members.

 

Pauls answer is the the solution. I wrote a value to 0x4204 and the Sound Plays. I can now play it once as well as in a loop. I can also stop the sound by myself.

Indeed, as Paul already said, it's also written in the Manual and i found it today, too, on page 17 of the FSUIPC Programmers Manual:

"Then write data to 4204 (DWORD) and, for a new sound to Play,".

 

Thanks for the hint!

 

Bodo