147 lines
3.6 KiB
Go
147 lines
3.6 KiB
Go
// Package forwarding forwards incoming stream to other streaming services
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package forwarding
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import (
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"log"
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"time"
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"gitlab.crans.org/nounous/ghostream/stream"
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)
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// Options to configure the stream forwarding.
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// For each stream name, user can provide several URL to forward stream to
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type Options map[string][]string
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// Serve handles incoming packets from SRT and forward them to other external services
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func Serve(streams map[string]*stream.Stream, cfg Options) {
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if len(cfg) < 1 {
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// No forwarding, ignore
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return
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}
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log.Printf("Stream forwarding initialized")
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for {
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for name, st := range streams {
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fwdCfg, ok := cfg[name]
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if !ok {
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// Not configured
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continue
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}
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// Start forwarding
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log.Printf("Starting forwarding for '%s'", name)
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go forward(st, fwdCfg)
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}
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// Regulary pull stream list,
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// it may be better to tweak the messaging system
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// to get an event on a new stream.
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time.Sleep(time.Second)
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}
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}
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func forward(st *stream.Stream, fwdCfg []string) {
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// FIXME
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/*ffmpegInstances := make(map[string]*exec.Cmd)
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ffmpegInputStreams := make(map[string]*io.WriteCloser)
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for {
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var err error = nil
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// Wait for packets
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// FIXME packet := <-inputChannel
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packet := srt.Packet{
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Data: []byte{},
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PacketType: "nothing",
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StreamName: "demo",
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}
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switch packet.PacketType {
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case "register":
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err = registerStream(packet.StreamName, ffmpegInstances, ffmpegInputStreams, cfg)
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break
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case "sendData":
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err = sendPacket(packet.StreamName, ffmpegInputStreams, packet.Data)
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break
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case "close":
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err = close(packet.StreamName, ffmpegInstances, ffmpegInputStreams)
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break
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default:
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log.Println("Unknown SRT packet type:", packet.PacketType)
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break
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}
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if err != nil {
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log.Printf("Error occurred while receiving SRT packet of type %s: %s", packet.PacketType, err)
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}
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}*/
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}
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/*
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// registerStream creates ffmpeg instance associated with newly created stream
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func registerStream(name string, ffmpegInstances map[string]*exec.Cmd, ffmpegInputStreams map[string]*io.WriteCloser, cfg Options) error {
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streams, exist := cfg[name]
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if !exist || len(streams) == 0 {
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// Nothing to do, not configured
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return nil
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}
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// Launch FFMPEG instance
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params := []string{"-hide_banner", "-loglevel", "error", "-re", "-i", "pipe:0"}
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for _, stream := range streams {
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params = append(params, "-f", "flv", "-preset", "ultrafast", "-tune", "zerolatency",
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"-c", "copy", stream)
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}
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ffmpeg := exec.Command("ffmpeg", params...)
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// Open pipes
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input, err := ffmpeg.StdinPipe()
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if err != nil {
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return err
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}
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errOutput, err := ffmpeg.StderrPipe()
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if err != nil {
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return err
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}
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ffmpegInstances[name] = ffmpeg
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ffmpegInputStreams[name] = &input
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// Start FFMpeg
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if err := ffmpeg.Start(); err != nil {
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return err
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}
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// Log standard error output
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go func() {
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scanner := bufio.NewScanner(errOutput)
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for scanner.Scan() {
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log.Printf("[FFMPEG %s] %s", name, scanner.Text())
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}
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}()
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return nil
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}
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// sendPacket forwards data to the ffmpeg instance related to the stream name
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func sendPacket(name string, ffmpegInputStreams map[string]*io.WriteCloser, data []byte) error {
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stdin := ffmpegInputStreams[name]
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if stdin == nil {
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// Don't need to forward stream
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return nil
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}
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_, err := (*stdin).Write(data)
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return err
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}
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// close ffmpeg instance associated with stream name
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func close(name string, ffmpegInstances map[string]*exec.Cmd, ffmpegInputStreams map[string]*io.WriteCloser) error {
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ffmpeg := ffmpegInstances[name]
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if ffmpeg == nil {
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// No stream to close
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return nil
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}
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if err := ffmpeg.Process.Kill(); err != nil {
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return err
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}
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delete(ffmpegInstances, name)
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delete(ffmpegInputStreams, name)
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return nil
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}
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*/
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