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main.go
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main.go
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package main
import (
"log"
"github.com/bluenviron/gortsplib/v4"
"github.com/bluenviron/gortsplib/v4/pkg/format"
"github.com/bluenviron/gortsplib/v4/pkg/url"
"github.com/pion/rtp"
)
// This example shows how to
// 1. connect to a RTSP server
// 2. check if there's an LPCM media
// 3. get LPCM packets of that media
func main() {
c := gortsplib.Client{}
// parse URL
u, err := url.Parse("rtsp://localhost:8554/mystream")
if err != nil {
panic(err)
}
// connect to the server
err = c.Start(u.Scheme, u.Host)
if err != nil {
panic(err)
}
defer c.Close()
// find published medias
desc, _, err := c.Describe(u)
if err != nil {
panic(err)
}
// find the LPCM media and format
var forma *format.LPCM
medi := desc.FindFormat(&forma)
if medi == nil {
panic("media not found")
}
// create decoder
rtpDec, err := forma.CreateDecoder()
if err != nil {
panic(err)
}
// setup a single media
_, err = c.Setup(desc.BaseURL, medi, 0, 0)
if err != nil {
panic(err)
}
// called when a RTP packet arrives
c.OnPacketRTP(medi, forma, func(pkt *rtp.Packet) {
// decode timestamp
pts, ok := c.PacketPTS(medi, pkt)
if !ok {
log.Printf("waiting for timestamp")
return
}
// extract LPCM samples from RTP packets
op, err := rtpDec.Decode(pkt)
if err != nil {
log.Printf("ERR: %v", err)
return
}
// print
log.Printf("received LPCM samples with PTS %v size %d\n", pts, len(op))
})
// start playing
_, err = c.Play(nil)
if err != nil {
panic(err)
}
// wait until a fatal error
panic(c.Wait())
}