RTPBuffer.calcPayloadLen

uint calcPayloadLen(uint packetLen, ubyte padLen, ubyte csrcCount) static nothrow

Calculate the length of the payload of an RTP packet with size packet_len, a padding of pad_len and a csrc_count CSRC entries.

`packetLen`	the length of the total RTP packet
`padLen`	the amount of padding
`csrcCount`	the number of CSRC entries

The length of the payload of an RTP packet with given parameters.