add new examples

examples/client-publish-pause.go

@@ -0,0 +1,97 @@
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/aler9/gortsplib"
+	"github.com/aler9/gortsplib/pkg/rtph264"
+)
+
+// This example shows how to
+// * generate RTP/H264 frames from a file with Gstreamer
+// * connect to a RTSP server, announce a H264 track
+// * write the frames of the track for 5 seconds
+// * pause for 5 seconds
+// * repeat
+
+func main() {
+	// open a listener to receive RTP/H264 frames
+	pc, err := net.ListenPacket("udp4", "127.0.0.1:9000")
+	if err != nil {
+		panic(err)
+	}
+	defer pc.Close()
+
+	fmt.Println("Waiting for a rtp/h264 stream on port 9000 - you can send one with gstreamer:\n" +
+		"gst-launch-1.0 filesrc location=video.mp4 ! qtdemux ! video/x-h264" +
+		" ! h264parse config-interval=1 ! rtph264pay ! udpsink host=127.0.0.1 port=9000")
+
+	// wait for RTP/H264 frames
+	decoder := rtph264.NewDecoderFromPacketConn(pc)
+	sps, pps, err := decoder.ReadSPSPPS()
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println("stream connected")
+
+	// create a H264 track
+	track, err := gortsplib.NewTrackH264(0, sps, pps)
+	if err != nil {
+		panic(err)
+	}
+
+	// connect to the server and start publishing the track
+	conn, err := gortsplib.DialPublish("rtsp://localhost:8554/mystream",
+		gortsplib.Tracks{track})
+	if err != nil {
+		panic(err)
+	}
+	defer conn.Close()
+
+	for {
+		writerDone := make(chan struct{})
+		go func() {
+			defer close(writerDone)
+
+			buf := make([]byte, 2048)
+			for {
+				// read frames from the source
+				n, _, err := pc.ReadFrom(buf)
+				if err != nil {
+					break
+				}
+
+				// write frames to the server
+				err = conn.WriteFrame(track.Id, gortsplib.StreamTypeRtp, buf[:n])
+				if err != nil {
+					break
+				}
+			}
+		}()
+
+		// wait
+		time.Sleep(5 * time.Second)
+
+		// pause
+		_, err := conn.Pause()
+		if err != nil {
+			panic(err)
+		}
+
+		// join writer
+		<-writerDone
+
+		// wait
+		time.Sleep(5 * time.Second)
+
+		// record again
+		_, err = conn.Record()
+		if err != nil {
+			panic(err)
+		}
+	}
+}