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package webrtc
import (
"encoding/json"
)
// RTCPMuxPolicy affects what ICE candidates are gathered to support
// non-multiplexed RTCP.
type RTCPMuxPolicy int
const (
// RTCPMuxPolicyNegotiate indicates to gather ICE candidates for both
// RTP and RTCP candidates. If the remote-endpoint is capable of
// multiplexing RTCP, multiplex RTCP on the RTP candidates. If it is not,
// use both the RTP and RTCP candidates separately.
RTCPMuxPolicyNegotiate RTCPMuxPolicy = iota + 1
// RTCPMuxPolicyRequire indicates to gather ICE candidates only for
// RTP and multiplex RTCP on the RTP candidates. If the remote endpoint is
// not capable of rtcp-mux, session negotiation will fail.
RTCPMuxPolicyRequire
)
// This is done this way because of a linter.
const (
rtcpMuxPolicyNegotiateStr = "negotiate"
rtcpMuxPolicyRequireStr = "require"
)
func newRTCPMuxPolicy(raw string) RTCPMuxPolicy {
switch raw {
case rtcpMuxPolicyNegotiateStr:
return RTCPMuxPolicyNegotiate
case rtcpMuxPolicyRequireStr:
return RTCPMuxPolicyRequire
default:
return RTCPMuxPolicy(Unknown)
}
}
func (t RTCPMuxPolicy) String() string {
switch t {
case RTCPMuxPolicyNegotiate:
return rtcpMuxPolicyNegotiateStr
case RTCPMuxPolicyRequire:
return rtcpMuxPolicyRequireStr
default:
return ErrUnknownType.Error()
}
}
// UnmarshalJSON parses the JSON-encoded data and stores the result
func (t *RTCPMuxPolicy) UnmarshalJSON(b []byte) error {
var val string
if err := json.Unmarshal(b, &val); err != nil {
return err
}
*t = newRTCPMuxPolicy(val)
return nil
}
// MarshalJSON returns the JSON encoding
func (t RTCPMuxPolicy) MarshalJSON() ([]byte, error) {
return json.Marshal(t.String())
}
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