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package webrtc
// RTPTransceiverDirection indicates the direction of the RTPTransceiver.
type RTPTransceiverDirection int
const (
// RTPTransceiverDirectionSendrecv indicates the RTPSender will offer
// to send RTP and the RTPReceiver will offer to receive RTP.
RTPTransceiverDirectionSendrecv RTPTransceiverDirection = iota + 1
// RTPTransceiverDirectionSendonly indicates the RTPSender will offer
// to send RTP.
RTPTransceiverDirectionSendonly
// RTPTransceiverDirectionRecvonly indicates the RTPReceiver will
// offer to receive RTP.
RTPTransceiverDirectionRecvonly
// RTPTransceiverDirectionInactive indicates the RTPSender won't offer
// to send RTP and the RTPReceiver won't offer to receive RTP.
RTPTransceiverDirectionInactive
)
// This is done this way because of a linter.
const (
rtpTransceiverDirectionSendrecvStr = "sendrecv"
rtpTransceiverDirectionSendonlyStr = "sendonly"
rtpTransceiverDirectionRecvonlyStr = "recvonly"
rtpTransceiverDirectionInactiveStr = "inactive"
)
// NewRTPTransceiverDirection defines a procedure for creating a new
// RTPTransceiverDirection from a raw string naming the transceiver direction.
func NewRTPTransceiverDirection(raw string) RTPTransceiverDirection {
switch raw {
case rtpTransceiverDirectionSendrecvStr:
return RTPTransceiverDirectionSendrecv
case rtpTransceiverDirectionSendonlyStr:
return RTPTransceiverDirectionSendonly
case rtpTransceiverDirectionRecvonlyStr:
return RTPTransceiverDirectionRecvonly
case rtpTransceiverDirectionInactiveStr:
return RTPTransceiverDirectionInactive
default:
return RTPTransceiverDirection(Unknown)
}
}
func (t RTPTransceiverDirection) String() string {
switch t {
case RTPTransceiverDirectionSendrecv:
return rtpTransceiverDirectionSendrecvStr
case RTPTransceiverDirectionSendonly:
return rtpTransceiverDirectionSendonlyStr
case RTPTransceiverDirectionRecvonly:
return rtpTransceiverDirectionRecvonlyStr
case RTPTransceiverDirectionInactive:
return rtpTransceiverDirectionInactiveStr
default:
return ErrUnknownType.Error()
}
}
// Revers indicate the opposite direction
func (t RTPTransceiverDirection) Revers() RTPTransceiverDirection {
switch t {
case RTPTransceiverDirectionSendonly:
return RTPTransceiverDirectionRecvonly
case RTPTransceiverDirectionRecvonly:
return RTPTransceiverDirectionSendonly
default:
return t
}
}
func haveRTPTransceiverDirectionIntersection(haystack []RTPTransceiverDirection, needle []RTPTransceiverDirection) bool {
for _, n := range needle {
for _, h := range haystack {
if n == h {
return true
}
}
}
return false
}
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