status-go/vendor/github.com/pion/webrtc/v3/bundlepolicy.go

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2022-03-10 09:44:48 +00:00
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())
}