92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
// Package srt serves a SRT server
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package srt
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import (
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"log"
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"github.com/haivision/srtgo"
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"gitlab.crans.org/nounous/ghostream/stream"
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)
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func handleStreamer(socket *srtgo.SrtSocket, streams map[string]*stream.Stream, name string) {
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// Check stream does not exist
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if _, ok := streams[name]; ok {
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log.Print("Stream already exists, refusing new streamer")
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socket.Close()
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return
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}
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// Create stream
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log.Printf("New SRT streamer for stream %s", name)
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st := stream.New()
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streams[name] = st
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// Create a new buffer
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// UDP packet cannot be larger than MTU (1500)
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buff := make([]byte, 1500)
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// Read RTP packets forever and send them to the WebRTC Client
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for {
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// 5s timeout
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n, err := socket.Read(buff, 5000)
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if err != nil {
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log.Println("Error occurred while reading SRT socket:", err)
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break
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}
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if n == 0 {
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// End of stream
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log.Printf("Received no bytes, stopping stream.")
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break
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}
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// Send raw data to other streams
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// Copy data in another buffer to ensure that the data would not be overwritten
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// FIXME: might be unnecessary
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data := make([]byte, n)
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copy(data, buff[:n])
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st.Broadcast <- data
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}
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// Close stream
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st.Close()
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socket.Close()
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delete(streams, name)
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}
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func handleViewer(s *srtgo.SrtSocket, streams map[string]*stream.Stream, name string) {
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log.Printf("New SRT viewer for stream %s", name)
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// Get requested stream
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st, ok := streams[name]
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if !ok {
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log.Println("Stream does not exist, refusing new viewer")
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return
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}
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// Register new output
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c := make(chan []byte, 1024)
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st.Register(c)
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st.IncrementClientCount()
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// Receive data and send them
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for data := range c {
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if len(data) < 1 {
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log.Print("Remove SRT viewer because of end of stream")
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break
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}
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// Send data
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_, err := s.Write(data, 1000)
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if err != nil {
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log.Printf("Remove SRT viewer because of sending error, %s", err)
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break
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}
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}
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// Close output
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st.Unregister(c)
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st.DecrementClientCount()
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s.Close()
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}
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