rtp: using 'size' instead of 'len'

stream/rtp/encoder.go

@@ -53,7 +53,7 @@ type Encoder struct {
 	frameInterval time.Duration
 	fps           int
 	buffer        []byte
-	pktSpace      [defPktLen]byte
+	pktSpace      [defPktSize]byte
 }
 
 // NewEncoder returns a new Encoder type given an io.Writer - the destination
@@ -94,7 +94,7 @@ func (e *Encoder) Encode(payload []byte) error {
 		Payload: payload,
 		Padding: no,
 	}
-	_, err := e.dst.Write(pkt.Bytes(e.pktSpace[:defPktLen]))
+	_, err := e.dst.Write(pkt.Bytes(e.pktSpace[:defPktSize]))
 	if err != nil {
 		return err
 	}

stream/rtp/rtp.go

@@ -33,10 +33,10 @@ for rtp-h264 and rtp standards.
 package rtp
 
 const (
-	rtpVer        = 2
-	headLen       = 3 * 4
-	defPayloadLen = 7 * 188
-	defPktLen     = headLen + defPayloadLen
+	rtpVer         = 2
+	headSize       = 3 * 4
+	defPayloadSize = 7 * 188
+	defPktSize     = headSize + defPayloadSize
 )
 
 // Pkt provides fields consistent with RFC3550 definition of an rtp packet
@@ -57,10 +57,10 @@ type Pkt struct {
 
 // Bytes provides a byte slice of the packet
 func (p *Pkt) Bytes(buf []byte) []byte {
-	if buf == nil || len(buf) != defPktLen {
-		buf = make([]byte, headLen, defPktLen)
+	if buf == nil || len(buf) != defPktSize {
+		buf = make([]byte, headSize, defPktSize)
 	}
-	buf = buf[:headLen]
+	buf = buf[:headSize]
 	if p.V == 0 {
 		p.V = rtpVer
 	}