mirror of
https://github.com/AlexxIT/go2rtc.git
synced 2025-10-31 11:46:26 +08:00
76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
package camera
|
|
|
|
import (
|
|
cryptorand "crypto/rand"
|
|
"encoding/binary"
|
|
"github.com/brutella/hap/rtp"
|
|
)
|
|
|
|
type Session struct {
|
|
Offer *rtp.SetupEndpoints
|
|
Answer *rtp.SetupEndpointsResponse
|
|
Config *rtp.StreamConfiguration
|
|
}
|
|
|
|
func NewSession(vp *rtp.VideoParameters, ap *rtp.AudioParameters) *Session {
|
|
vp.RTP = rtp.RTPParams{
|
|
PayloadType: 99,
|
|
Ssrc: RandomUint32(),
|
|
Bitrate: 2048,
|
|
Interval: 10,
|
|
MTU: 1200, // like WebRTC
|
|
}
|
|
ap.RTP = rtp.RTPParams{
|
|
PayloadType: 110,
|
|
Ssrc: RandomUint32(),
|
|
Bitrate: 32,
|
|
Interval: 10,
|
|
ComfortNoisePayloadType: 98,
|
|
MTU: 0,
|
|
}
|
|
|
|
sessionID := RandomBytes(16)
|
|
s := &Session{
|
|
Offer: &rtp.SetupEndpoints{
|
|
SessionId: sessionID,
|
|
Video: rtp.CryptoSuite{
|
|
MasterKey: RandomBytes(16),
|
|
MasterSalt: RandomBytes(14),
|
|
},
|
|
Audio: rtp.CryptoSuite{
|
|
MasterKey: RandomBytes(16),
|
|
MasterSalt: RandomBytes(14),
|
|
},
|
|
},
|
|
Config: &rtp.StreamConfiguration{
|
|
Command: rtp.SessionControlCommand{
|
|
Identifier: sessionID,
|
|
Type: rtp.SessionControlCommandTypeStart,
|
|
},
|
|
Video: *vp,
|
|
Audio: *ap,
|
|
},
|
|
}
|
|
return s
|
|
}
|
|
|
|
func (s *Session) SetLocalEndpoint(host string, port uint16) {
|
|
s.Offer.ControllerAddr = rtp.Addr{
|
|
IPAddr: host,
|
|
VideoRtpPort: port,
|
|
AudioRtpPort: port,
|
|
}
|
|
}
|
|
|
|
func RandomBytes(size int) []byte {
|
|
data := make([]byte, size)
|
|
_, _ = cryptorand.Read(data)
|
|
return data
|
|
}
|
|
|
|
func RandomUint32() uint32 {
|
|
data := make([]byte, 4)
|
|
_, _ = cryptorand.Read(data)
|
|
return binary.BigEndian.Uint32(data)
|
|
}
|