Thread: FOURCC to string?

Hi,
I'm trying to interpret a Four Character Code (FOURCC) as a string. FOURCCs are longs representing characters which make up an identifier for multimedia content in AVI files, among others. So, does anyone know a way of converting a long into a char[4]?

Well, I was once working on AVI files, so I think I can help you.

I have four solutions for you:
- read it as a char[4], that was what I was doing.

- handle it as a DWORD, make constant values using MAKEDWORD and MAKEWORD

- do the following:

union FCC
{
DWORD dwValue;
char[4] cValue;
} myFcc;

store your DWORD into dwValue, and then read it from cValue[] as you would on a normal struct, but it's a union, so both members share the same memory position.

- make a funtion:

int DwordToFourCC(DWORD fcc, char* buffer)
{
//I'm not sure about the order of these, but try messing with them
buffer[0]=HIBYTE(HIWORD(fcc));
buffer[1]=LOBYTE(HIWORD(fcc));
buffer[2]=HIBYTE(LOWORD(fcc));
buffer[3]=LOBYTE(LOWORD(fcc));
return 0;
}

I haven't tried each one of these, so I'm not sure they would work...

I can only say that these could work on Visual C++ 6, I'm not sure about other compilers

Good Luck

Oskilian