Add 'rtsp/' from commit 'df0f52cf38a45d842291bb72e1adc24de397d1dd'

git-subtree-dir: rtsp
git-subtree-mainline: 6b682ae3918d3f153df86e11eb07d386bfcd26b8
git-subtree-split: df0f52cf38a45d842291bb72e1adc24de397d1dd

rtsp/conn.go

@@ -0,0 +1,25 @@
+package rtsp
+
+import (
+	"net"
+	"time"
+)
+
+type connWithTimeout struct {
+	Timeout time.Duration
+	net.Conn
+}
+
+func (self connWithTimeout) Read(p []byte) (n int, err error) {
+	if self.Timeout > 0 {
+		self.Conn.SetReadDeadline(time.Now().Add(self.Timeout))
+	}
+	return self.Conn.Read(p)
+}
+
+func (self connWithTimeout) Write(p []byte) (n int, err error) {
+	if self.Timeout > 0 {
+		self.Conn.SetWriteDeadline(time.Now().Add(self.Timeout))
+	}
+	return self.Conn.Write(p)
+}

rtsp/sdp/parser.go

@@ -0,0 +1,116 @@
+package sdp
+
+import (
+	"encoding/base64"
+	"encoding/hex"
+	"fmt"
+	"github.com/nareix/av"
+	"strconv"
+	"strings"
+)
+
+type Session struct {
+	Uri string
+}
+
+type Media struct {
+	AVType             string
+	Type               av.CodecType
+	TimeScale          int
+	Control            string
+	Rtpmap             int
+	Config             []byte
+	SpropParameterSets [][]byte
+	PayloadType        int
+	SizeLength         int
+	IndexLength        int
+}
+
+func Parse(content string) (sess Session, medias []Media) {
+	var media *Media
+
+	for _, line := range strings.Split(content, "\n") {
+		line = strings.TrimSpace(line)
+		typeval := strings.SplitN(line, "=", 2)
+		if len(typeval) == 2 {
+			fields := strings.SplitN(typeval[1], " ", 2)
+
+			switch typeval[0] {
+			case "m":
+				if len(fields) > 0 {
+					switch fields[0] {
+					case "audio", "video":
+						medias = append(medias, Media{AVType: fields[0]})
+						media = &medias[len(medias)-1]
+						mfields := strings.Split(fields[1], " ")
+						if len(mfields) >= 3 {
+							media.PayloadType, _ = strconv.Atoi(mfields[2])
+						}
+					}
+				}
+
+			case "u":
+				sess.Uri = typeval[1]
+
+			case "a":
+				if media != nil {
+					for _, field := range fields {
+						keyval := strings.SplitN(field, ":", 2)
+						if len(keyval) >= 2 {
+							key := keyval[0]
+							val := keyval[1]
+							switch key {
+							case "control":
+								media.Control = val
+							case "rtpmap":
+								media.Rtpmap, _ = strconv.Atoi(val)
+							}
+						}
+						keyval = strings.Split(field, "/")
+						if len(keyval) >= 2 {
+							key := keyval[0]
+							switch strings.ToUpper(key) {
+							case "MPEG4-GENERIC":
+								media.Type = av.AAC
+							case "H264":
+								media.Type = av.H264
+							}
+							if i, err := strconv.Atoi(keyval[1]); err == nil {
+								media.TimeScale = i
+							}
+							if false {
+								fmt.Println("sdp:", keyval[1], media.TimeScale)
+							}
+						}
+						keyval = strings.Split(field, ";")
+						if len(keyval) > 1 {
+							for _, field := range keyval {
+								keyval := strings.SplitN(field, "=", 2)
+								if len(keyval) == 2 {
+									key := strings.TrimSpace(keyval[0])
+									val := keyval[1]
+									switch key {
+									case "config":
+										media.Config, _ = hex.DecodeString(val)
+									case "sizelength":
+										media.SizeLength, _ = strconv.Atoi(val)
+									case "indexlength":
+										media.IndexLength, _ = strconv.Atoi(val)
+									case "sprop-parameter-sets":
+										fields := strings.Split(val, ",")
+										for _, field := range fields {
+											val, _ := base64.StdEncoding.DecodeString(field)
+											media.SpropParameterSets = append(media.SpropParameterSets, val)
+										}
+									}
+								}
+							}
+						}
+					}
+				}
+
+			}
+		}
+	}
+	return
+}

rtsp/sdp/parser_test.go

@@ -0,0 +1,44 @@
+package sdp
+
+import (
+	"testing"
+)
+
+func TestParse(t *testing.T) {
+	infos := Decode(`
+v=0
+o=- 1459325504777324 1 IN IP4 192.168.0.123
+s=RTSP/RTP stream from Network Video Server
+i=mpeg4cif
+t=0 0
+a=tool:LIVE555 Streaming Media v2009.09.28
+a=type:broadcast
+a=control:*
+a=range:npt=0-
+a=x-qt-text-nam:RTSP/RTP stream from Network Video Server
+a=x-qt-text-inf:mpeg4cif
+m=video 0 RTP/AVP 96
+c=IN IP4 0.0.0.0
+b=AS:300
+a=rtpmap:96 H264/90000
+a=fmtp:96 profile-level-id=420029; packetization-mode=1; sprop-parameter-sets=Z00AHpWoKA9k,aO48gA==
+a=x-dimensions: 720, 480
+a=x-framerate: 15
+a=control:track1
+m=audio 0 RTP/AVP 96
+c=IN IP4 0.0.0.0
+b=AS:256
+a=rtpmap:96 MPEG4-GENERIC/16000/2
+a=fmtp:96 streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1408
+a=control:track2
+m=audio 0 RTP/AVP 0
+c=IN IP4 0.0.0.0
+b=AS:50
+a=recvonly
+a=control:rtsp://109.195.127.207:554/mpeg4cif/trackID=2
+a=rtpmap:0 PCMU/8000
+a=Media_header:MEDIAINFO=494D4B48010100000400010010710110401F000000FA000000000000000000000000000000000000;
+a=appversion:1.0
+`)
+	t.Logf("%v", infos)
+}

rtsp/stream.go

@@ -0,0 +1,29 @@
+package rtsp
+
+import (
+	"github.com/nareix/av"
+	"github.com/nareix/rtsp/sdp"
+	"time"
+)
+
+type Stream struct {
+	av.CodecData
+	Sdp    sdp.Media
+	client *Client
+
+	// h264
+	fuStarted  bool
+	fuBuffer   []byte
+	sps        []byte
+	pps        []byte
+	spsChanged bool
+	ppsChanged bool
+
+	gotpkt    bool
+	pkt       av.Packet
+	timestamp uint32
+	firsttimestamp uint32
+
+	lasttime time.Duration
+}
+