If I understand your intent correctly, you want to use a Pioneer remote, which sends the Pioneer IR protocol, and have your mediapc respond to the signals. So you want to know what the Pioneer IR protocol looks like.

It is modulated at 40KHz, and otherwise is identical to the NEC2 IR protocol. Look at DecodeIR.html in this file for further information.

However, Pioneer IR signals, especially for their newer products, aren't a very good candidate for adaption to other uses.  The 8 character codes are actually 2 groups of 4 hexadecimal digits in the format ddff ddff, where dd is a device number and ff is a function number.  In principle, that scheme can represent 65536 functions designated for up to 65536 devices.  For example, the IR signal for Input 1 is AA5A+AF7A.  That's device 170, function 90 followed by device 175, function 122.

IR signals are made up of burst pairs, and an alternate way to describe the signals is called Pronto Hex.  That's the  long strings of 4 hexadecimal digits you see in the Pioneer documentation.  The pair  0016 0016 represents a 0, and  0016 0043 represents a 1.  Of course some additional information is included in the string.

If it were me, I'd probably try use a simple NEC or Sony 15 protocol.  Probably the Kuro remote will send some of those also.