package main

import (
	"log"

	"github.com/aler9/gortsplib"
	"github.com/aler9/gortsplib/pkg/url"
)

// This example shows how to
// 1. connect to a RTSP server
// 2. get tracks published on a path
// 3. read only selected tracks

func main() {
	c := gortsplib.Client{
		// called when a RTP packet arrives
		OnPacketRTP: func(ctx *gortsplib.ClientOnPacketRTPCtx) {
			log.Printf("RTP packet from track %d, payload type %d\n", ctx.TrackID, ctx.Packet.Header.PayloadType)
		},
		// called when a RTCP packet arrives
		OnPacketRTCP: func(ctx *gortsplib.ClientOnPacketRTCPCtx) {
			log.Printf("RTCP packet from track %d, type %T\n", ctx.TrackID, ctx.Packet)
		},
	}

	u, err := url.Parse("rtsp://myserver/mypath")
	if err != nil {
		panic(err)
	}

	err = c.Start(u.Scheme, u.Host)
	if err != nil {
		panic(err)
	}
	defer c.Close()

	tracks, baseURL, _, err := c.Describe(u)
	if err != nil {
		panic(err)
	}

	// setup only H264 tracks, skipping audio or application tracks
	for _, t := range tracks {
		if _, ok := t.(*gortsplib.TrackH264); ok {
			_, err := c.Setup(t, baseURL, 0, 0)
			if err != nil {
				panic(err)
			}
		}
	}

	// start reading tracks
	_, err = c.Play(nil)
	if err != nil {
		panic(err)
	}

	// wait until a fatal error
	panic(c.Wait())
}