直播：后台 JWT 推流、前台画中画；WebRTC 服务与 Nginx WebSocket 代理

Made-with: Cursor

server/vendor/github.com/pion/webrtc/v3/rtptransceiverdirection.go

@@ -0,0 +1,88 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+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
+}