FOURCC mmioFOURCC(ch0, ch1, ch2, ch3)
This macro converts four characters to to a four-character code.
CHAR ch0
The first character of the four-character code.
CHAR ch1
The second character of the four-character code.
CHAR ch2
The third character of the four-character code.
CHAR ch3
The fourth character of the four-character code.
The return value is the four-character code created from the given characters.
This macro does not check to see if the four character code follows any conventions regarding which characters to include in a four-character code.
mmioStringToFOURCC