63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package sdp
|
|
|
|
import "errors"
|
|
|
|
// Direction is a marker for transmission directon of an endpoint
|
|
type Direction int
|
|
|
|
const (
|
|
// DirectionSendRecv is for bidirectional communication
|
|
DirectionSendRecv Direction = iota + 1
|
|
// DirectionSendOnly is for outgoing communication
|
|
DirectionSendOnly
|
|
// DirectionRecvOnly is for incoming communication
|
|
DirectionRecvOnly
|
|
// DirectionInactive is for no communication
|
|
DirectionInactive
|
|
)
|
|
|
|
const (
|
|
directionSendRecvStr = "sendrecv"
|
|
directionSendOnlyStr = "sendonly"
|
|
directionRecvOnlyStr = "recvonly"
|
|
directionInactiveStr = "inactive"
|
|
directionUnknownStr = ""
|
|
)
|
|
|
|
var errDirectionString = errors.New("invalid direction string")
|
|
|
|
// NewDirection defines a procedure for creating a new direction from a raw
|
|
// string.
|
|
func NewDirection(raw string) (Direction, error) {
|
|
switch raw {
|
|
case directionSendRecvStr:
|
|
return DirectionSendRecv, nil
|
|
case directionSendOnlyStr:
|
|
return DirectionSendOnly, nil
|
|
case directionRecvOnlyStr:
|
|
return DirectionRecvOnly, nil
|
|
case directionInactiveStr:
|
|
return DirectionInactive, nil
|
|
default:
|
|
return Direction(unknown), errDirectionString
|
|
}
|
|
}
|
|
|
|
func (t Direction) String() string {
|
|
switch t {
|
|
case DirectionSendRecv:
|
|
return directionSendRecvStr
|
|
case DirectionSendOnly:
|
|
return directionSendOnlyStr
|
|
case DirectionRecvOnly:
|
|
return directionRecvOnlyStr
|
|
case DirectionInactive:
|
|
return directionInactiveStr
|
|
default:
|
|
return directionUnknownStr
|
|
}
|
|
}
|