137 lines
2.8 KiB
Go
137 lines
2.8 KiB
Go
package rtmp
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import (
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"fmt"
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"io"
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"net"
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"os"
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"strings"
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"syscall"
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"time"
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"unsafe"
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"github.com/nareix/joy5/av"
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"github.com/nareix/joy5/format/flv"
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log "github.com/sirupsen/logrus"
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"github.com/gabek/owncast/config"
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"github.com/gabek/owncast/core"
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"github.com/gabek/owncast/core/ffmpeg"
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"github.com/gabek/owncast/utils"
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"github.com/nareix/joy5/codec/h264"
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"github.com/nareix/joy5/format/rtmp"
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)
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var (
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//IsConnected whether there is a connection or not
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_isConnected = false
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)
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var _transcoder ffmpeg.Transcoder
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var _pipe *os.File
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//Start starts the rtmp service, listening on port 1935
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func Start() {
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port := 1935
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s := rtmp.NewServer()
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var lis net.Listener
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var error error
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if lis, error = net.Listen("tcp", fmt.Sprintf(":%d", port)); error != nil {
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return
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}
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s.LogEvent = func(c *rtmp.Conn, nc net.Conn, e int) {
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es := rtmp.EventString[e]
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log.Traceln(unsafe.Pointer(c), nc.LocalAddr(), nc.RemoteAddr(), es)
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}
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s.HandleConn = HandleConn
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if error != nil {
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log.Panicln(error)
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}
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log.Infof("RTMP server is listening for incoming stream on port: %d", port)
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for {
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nc, err := lis.Accept()
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if err != nil {
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time.Sleep(time.Second)
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continue
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}
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go s.HandleNetConn(nc)
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}
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}
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func HandleConn(c *rtmp.Conn, nc net.Conn) {
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if _isConnected {
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log.Errorln("stream already running; can not overtake an existing stream")
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nc.Close()
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return
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}
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streamingKeyComponents := strings.Split(c.URL.Path, "/")
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streamingKey := streamingKeyComponents[len(streamingKeyComponents)-1]
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if streamingKey != config.Config.VideoSettings.StreamingKey {
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log.Errorln("invalid streaming key; rejecting incoming stream")
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nc.Close()
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return
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}
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log.Infoln("Incoming RTMP connected.")
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pipePath := utils.GetTemporaryPipePath()
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syscall.Mkfifo(pipePath, 0666)
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_transcoder = ffmpeg.NewTranscoder()
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go _transcoder.Start()
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_isConnected = true
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core.SetStreamAsConnected()
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f, err := os.OpenFile(pipePath, os.O_RDWR, os.ModeNamedPipe)
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_pipe = f
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if err != nil {
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panic(err)
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}
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w := flv.NewMuxer(f)
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for {
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pkt, err := c.ReadPacket()
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if err != nil {
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if err == io.EOF {
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handleDisconnect(nc)
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}
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}
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if pkt.Type == av.H264 {
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nalus, _ := h264.SplitNALUs(pkt.Data)
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annexb := h264.JoinNALUsAnnexb(nalus)
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avcc := h264.JoinNALUsAVCC([][]byte{annexb})
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pkt.Data = avcc
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} else if pkt.Type == av.Metadata {
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log.Traceln(string(pkt.Data))
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}
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if err := w.WritePacket(pkt); err != nil {
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panic(err)
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}
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}
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}
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func handleDisconnect(conn net.Conn) {
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log.Infoln("RTMP disconnected.")
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conn.Close()
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_pipe.Close()
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_isConnected = false
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_transcoder.Stop()
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core.SetStreamAsDisconnected()
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}
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//IsConnected gets whether there is an rtmp connection or not
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//this is only a getter since it is controlled by the rtmp handler
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func IsConnected() bool {
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return _isConnected
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}
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