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

@@ -0,0 +1,81 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package webrtc
+
+import (
+	"encoding/json"
+)
+
+// BundlePolicy affects which media tracks are negotiated if the remote
+// endpoint is not bundle-aware, and what ICE candidates are gathered. If the
+// remote endpoint is bundle-aware, all media tracks and data channels are
+// bundled onto the same transport.
+type BundlePolicy int
+
+const (
+	// BundlePolicyBalanced indicates to gather ICE candidates for each
+	// media type in use (audio, video, and data). If the remote endpoint is
+	// not bundle-aware, negotiate only one audio and video track on separate
+	// transports.
+	BundlePolicyBalanced BundlePolicy = iota + 1
+
+	// BundlePolicyMaxCompat indicates to gather ICE candidates for each
+	// track. If the remote endpoint is not bundle-aware, negotiate all media
+	// tracks on separate transports.
+	BundlePolicyMaxCompat
+
+	// BundlePolicyMaxBundle indicates to gather ICE candidates for only
+	// one track. If the remote endpoint is not bundle-aware, negotiate only
+	// one media track.
+	BundlePolicyMaxBundle
+)
+
+// This is done this way because of a linter.
+const (
+	bundlePolicyBalancedStr  = "balanced"
+	bundlePolicyMaxCompatStr = "max-compat"
+	bundlePolicyMaxBundleStr = "max-bundle"
+)
+
+func newBundlePolicy(raw string) BundlePolicy {
+	switch raw {
+	case bundlePolicyBalancedStr:
+		return BundlePolicyBalanced
+	case bundlePolicyMaxCompatStr:
+		return BundlePolicyMaxCompat
+	case bundlePolicyMaxBundleStr:
+		return BundlePolicyMaxBundle
+	default:
+		return BundlePolicy(Unknown)
+	}
+}
+
+func (t BundlePolicy) String() string {
+	switch t {
+	case BundlePolicyBalanced:
+		return bundlePolicyBalancedStr
+	case BundlePolicyMaxCompat:
+		return bundlePolicyMaxCompatStr
+	case BundlePolicyMaxBundle:
+		return bundlePolicyMaxBundleStr
+	default:
+		return ErrUnknownType.Error()
+	}
+}
+
+// UnmarshalJSON parses the JSON-encoded data and stores the result
+func (t *BundlePolicy) UnmarshalJSON(b []byte) error {
+	var val string
+	if err := json.Unmarshal(b, &val); err != nil {
+		return err
+	}
+
+	*t = newBundlePolicy(val)
+	return nil
+}
+
+// MarshalJSON returns the JSON encoding
+func (t BundlePolicy) MarshalJSON() ([]byte, error) {
+	return json.Marshal(t.String())
+}