new client api

connclientpublish.go

@@ -0,0 +1,154 @@
+package gortsplib
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/aler9/gortsplib/base"
+)
+
+// Announce writes an ANNOUNCE request and reads a Response.
+func (c *ConnClient) Announce(u *base.URL, tracks Tracks) (*base.Response, error) {
+	_, err := c.checkState(map[connClientState]struct{}{
+		connClientStateInitial: {},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	res, err := c.Do(&base.Request{
+		Method: base.ANNOUNCE,
+		URL:    u,
+		Header: base.Header{
+			"Content-Type": base.HeaderValue{"application/sdp"},
+		},
+		Content: tracks.Write(),
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	if res.StatusCode != base.StatusOK {
+		return nil, fmt.Errorf("bad status code: %d (%s)", res.StatusCode, res.StatusMessage)
+	}
+
+	c.streamUrl = u
+	*c.state = connClientStatePreRecord
+
+	return res, nil
+}
+
+// Record writes a RECORD request and reads a Response.
+// This can be called only after Announce() and Setup().
+func (c *ConnClient) Record() (*base.Response, error) {
+	_, err := c.checkState(map[connClientState]struct{}{
+		connClientStatePreRecord: {},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	res, err := c.Do(&base.Request{
+		Method: base.RECORD,
+		URL:    c.streamUrl,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	if res.StatusCode != base.StatusOK {
+		return nil, fmt.Errorf("bad status code: %d (%s)", res.StatusCode, res.StatusMessage)
+	}
+
+	if *c.streamProtocol == StreamProtocolUDP {
+		c.writeFrameFunc = c.writeFrameUDP
+	} else {
+		c.writeFrameFunc = c.writeFrameTCP
+	}
+
+	c.state.store(connClientStateRecord)
+
+	c.backgroundTerminate = make(chan struct{})
+	c.backgroundDone = make(chan struct{})
+
+	if *c.streamProtocol == StreamProtocolUDP {
+		go c.backgroundRecordUDP()
+	} else {
+		go c.backgroundRecordTCP()
+	}
+
+	return nil, nil
+}
+
+func (c *ConnClient) backgroundRecordUDP() {
+	defer close(c.backgroundDone)
+
+	c.nconn.SetReadDeadline(time.Time{}) // disable deadline
+
+	readDone := make(chan error)
+	go func() {
+		for {
+			var res base.Response
+			err := res.Read(c.br)
+			if err != nil {
+				readDone <- err
+				return
+			}
+		}
+	}()
+
+	select {
+	case <-c.backgroundTerminate:
+		c.nconn.SetReadDeadline(time.Now())
+		<-readDone
+		c.backgroundUDPError = fmt.Errorf("terminated")
+		c.state.store(connClientStateUDPError)
+		return
+
+	case err := <-readDone:
+		c.backgroundUDPError = err
+		c.state.store(connClientStateUDPError)
+		return
+	}
+}
+
+func (c *ConnClient) backgroundRecordTCP() {
+	defer close(c.backgroundDone)
+}
+
+func (c *ConnClient) writeFrameUDP(trackId int, streamType StreamType, content []byte) error {
+	switch c.state.load() {
+	case connClientStateUDPError:
+		return c.backgroundUDPError
+
+	case connClientStateRecord:
+
+	default:
+		return fmt.Errorf("not recording")
+	}
+
+	if streamType == StreamTypeRtp {
+		return c.udpRtpListeners[trackId].write(content)
+	}
+	return c.udpRtcpListeners[trackId].write(content)
+}
+
+func (c *ConnClient) writeFrameTCP(trackId int, streamType StreamType, content []byte) error {
+	if c.state.load() != connClientStateRecord {
+		return fmt.Errorf("not recording")
+	}
+
+	c.nconn.SetWriteDeadline(time.Now().Add(c.d.WriteTimeout))
+	frame := base.InterleavedFrame{
+		TrackId:    trackId,
+		StreamType: streamType,
+		Content:    content,
+	}
+	return frame.Write(c.bw)
+}
+
+// WriteFrame writes a frame.
+// This can be used only after Record().
+func (c *ConnClient) WriteFrame(trackId int, streamType StreamType, content []byte) error {
+	return c.writeFrameFunc(trackId, streamType, content)
+}