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add Write method to RawPacket struct #18

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add Write method to RawPacket struct #18

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14 changes: 14 additions & 0 deletions src/net/rtp/packets.go
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,14 @@ func (rp *RawPacket) Buffer() []byte {
return rp.buffer
}

// Write writes data bytes from data buffer to the underlying RawPacket.
func (rp *RawPacket) Write(data []byte) (int, error) {
rp.buffer = data
rp.inUse = len(data)
rp.isFree = true
return rp.inUse, nil
}

// InUse returns the number of valid bytes in the packet buffer.
// Several function modify the inUse variable, for example when copying payload or setting extensions
// in the RTP packet. Thus "buffer[0:inUse]" is the slice inside the buffer that will be sent or
Expand All @@ -123,6 +131,12 @@ func (rp *RawPacket) InUse() int {
// *** RTP specific functions start here ***

// DataPacket RTP packet type to define RTP specific functions
//
// if you want to copy incoming RTP packet as-is. For example
// when you need to redirect RTP packet from WebRTC to plain RTP:
// pkt := rtp.DataPacket{}
// pkt.Write(buf.Bytes())
// session.WriteData(&pkt)
type DataPacket struct {
RawPacket
payloadLength int16
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