mirror of
https://github.com/AlexxIT/go2rtc.git
synced 2025-09-27 12:42:18 +08:00
76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
package camera
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import (
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cryptorand "crypto/rand"
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"encoding/binary"
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"github.com/brutella/hap/rtp"
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)
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type Session struct {
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Offer *rtp.SetupEndpoints
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Answer *rtp.SetupEndpointsResponse
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Config *rtp.StreamConfiguration
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}
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func NewSession(vp *rtp.VideoParameters, ap *rtp.AudioParameters) *Session {
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vp.RTP = rtp.RTPParams{
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PayloadType: 99,
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Ssrc: RandomUint32(),
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Bitrate: 2048,
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Interval: 10,
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MTU: 1200, // like WebRTC
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}
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ap.RTP = rtp.RTPParams{
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PayloadType: 110,
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Ssrc: RandomUint32(),
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Bitrate: 32,
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Interval: 10,
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ComfortNoisePayloadType: 98,
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MTU: 0,
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}
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sessionID := RandomBytes(16)
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s := &Session{
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Offer: &rtp.SetupEndpoints{
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SessionId: sessionID,
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Video: rtp.CryptoSuite{
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MasterKey: RandomBytes(16),
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MasterSalt: RandomBytes(14),
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},
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Audio: rtp.CryptoSuite{
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MasterKey: RandomBytes(16),
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MasterSalt: RandomBytes(14),
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},
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},
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Config: &rtp.StreamConfiguration{
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Command: rtp.SessionControlCommand{
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Identifier: sessionID,
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Type: rtp.SessionControlCommandTypeStart,
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},
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Video: *vp,
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Audio: *ap,
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},
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}
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return s
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}
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func (s *Session) SetLocalEndpoint(host string, port uint16) {
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s.Offer.ControllerAddr = rtp.Addr{
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IPAddr: host,
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VideoRtpPort: port,
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AudioRtpPort: port,
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}
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}
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func RandomBytes(size int) []byte {
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data := make([]byte, size)
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_, _ = cryptorand.Read(data)
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return data
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}
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func RandomUint32() uint32 {
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data := make([]byte, 4)
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_, _ = cryptorand.Read(data)
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return binary.BigEndian.Uint32(data)
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}
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