mirror of
https://github.com/pion/webrtc.git
synced 2025-09-27 03:25:58 +08:00
86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
package main
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import (
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"fmt"
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"time"
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"github.com/pions/webrtc"
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"github.com/pions/webrtc/examples/util"
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"github.com/pions/webrtc/pkg/ice"
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"github.com/pions/webrtc/pkg/media/ivfwriter"
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"github.com/pions/webrtc/pkg/rtcp"
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)
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func main() {
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// Everything below is the pion-WebRTC API! Thanks for using it ❤️.
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// Setup the codecs you want to use.
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// We'll use a VP8 codec but you can also define your own
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webrtc.RegisterCodec(webrtc.NewRTCRtpOpusCodec(webrtc.DefaultPayloadTypeOpus, 48000, 2))
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webrtc.RegisterCodec(webrtc.NewRTCRtpVP8Codec(webrtc.DefaultPayloadTypeVP8, 90000))
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// Prepare the configuration
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config := webrtc.RTCConfiguration{
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IceServers: []webrtc.RTCIceServer{
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{
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URLs: []string{"stun:stun.l.google.com:19302"},
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},
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},
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}
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// Create a new RTCPeerConnection
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peerConnection, err := webrtc.New(config)
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util.Check(err)
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// Set a handler for when a new remote track starts, this handler saves buffers to disk as
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// an ivf file, since we could have multiple video tracks we provide a counter.
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// In your application this is where you would handle/process video
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peerConnection.OnTrack(func(track *webrtc.RTCTrack) {
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// Send a PLI on an interval so that the publisher is pushing a keyframe every rtcpPLIInterval
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// This is a temporary fix until we implement incoming RTCP events, then we would push a PLI only when a viewer requests it
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go func() {
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ticker := time.NewTicker(time.Second * 3)
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for range ticker.C {
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err := peerConnection.SendRTCP(&rtcp.PictureLossIndication{MediaSSRC: track.Ssrc})
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if err != nil {
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fmt.Println(err)
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}
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}
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}()
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if track.Codec.Name == webrtc.VP8 {
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fmt.Println("Got VP8 track, saving to disk as output.ivf")
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i, err := ivfwriter.New("output.ivf")
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util.Check(err)
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for {
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err = i.AddPacket(<-track.Packets)
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util.Check(err)
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}
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}
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})
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// Set the handler for ICE connection state
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// This will notify you when the peer has connected/disconnected
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peerConnection.OnICEConnectionStateChange(func(connectionState ice.ConnectionState) {
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fmt.Printf("Connection State has changed %s \n", connectionState.String())
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})
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// Wait for the offer to be pasted
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offer := webrtc.RTCSessionDescription{}
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util.Decode(util.MustReadStdin(), &offer)
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// Set the remote SessionDescription
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err = peerConnection.SetRemoteDescription(offer)
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util.Check(err)
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// Sets the LocalDescription, and starts our UDP listeners
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answer, err := peerConnection.CreateAnswer(nil)
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util.Check(err)
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// Output the answer in base64 so we can paste it in browser
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fmt.Println(util.Encode(answer))
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// Block forever
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select {}
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}
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