From 17e47daba59182f886a7236eeb098c253b23fde5 Mon Sep 17 00:00:00 2001
From: Andrey Semochkin <admin@wetel.ru>
Date: Sat, 8 Aug 2020 20:24:23 +0300
Subject: [PATCH] start work webrtc adapter

---
 .idea/modules.xml        |   8 ++
 .idea/vcs.xml            |   6 ++
 .idea/vdk.iml            |   9 ++
 .idea/watcherTasks.xml   |   9 ++
 .idea/workspace.xml      |  87 ++++++++++++++++
 format/format.go         |   1 -
 format/webrtc/adapter.go | 219 +++++++++++++++++++++++++++++++++++++++
 go.mod                   |   2 +
 go.sum                   |  95 +++++++++++++++++
 9 files changed, 435 insertions(+), 1 deletion(-)
 create mode 100644 .idea/modules.xml
 create mode 100644 .idea/vcs.xml
 create mode 100644 .idea/vdk.iml
 create mode 100644 .idea/watcherTasks.xml
 create mode 100644 .idea/workspace.xml
 create mode 100644 format/webrtc/adapter.go
 create mode 100644 go.sum

diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..86f9578
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/vdk.iml" filepath="$PROJECT_DIR$/.idea/vdk.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vdk.iml b/.idea/vdk.iml
new file mode 100644
index 0000000..5e764c4
--- /dev/null
+++ b/.idea/vdk.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/watcherTasks.xml b/.idea/watcherTasks.xml
new file mode 100644
index 0000000..27aa2e8
--- /dev/null
+++ b/.idea/watcherTasks.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectTasksOptions">
+    <enabled-global>
+      <option value="go fmt" />
+      <option value="goimports" />
+    </enabled-global>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 0000000..68bd5f2
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="BranchesTreeState">
+    <expand>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+    </expand>
+    <select />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="42b0d4fc-bb69-455e-85b5-24bbd2011819" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/.idea/modules.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/vcs.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/vdk.iml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/watcherTasks.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/format/webrtc/adapter.go" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/format/format.go" beforeDir="false" afterPath="$PROJECT_DIR$/format/format.go" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/go.mod" beforeDir="false" afterPath="$PROJECT_DIR$/go.mod" afterDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Go File" />
+      </list>
+    </option>
+  </component>
+  <component name="GOROOT" path="/usr/local/go" />
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="GoLibraries">
+    <option name="indexEntireGoPath" value="false" />
+  </component>
+  <component name="ProjectId" id="1fp1qhBVMkG2VqoaXsEJGv1aMUs" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">
+    <property name="ASKED_SHARE_PROJECT_CONFIGURATION_FILES" value="true" />
+    <property name="DefaultGoTemplateProperty" value="Go File" />
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="SHARE_PROJECT_CONFIGURATION_FILES" value="true" />
+    <property name="go.import.settings.migrated" value="true" />
+    <property name="go.sdk.automatically.set" value="true" />
+    <property name="go.tried.to.enable.integration.vgo.integrator" value="true" />
+    <property name="last_opened_file_path" value="$USER_HOME$" />
+    <property name="settings.editor.selected.configurable" value="watcher.settings" />
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+  <component name="VgoProject">
+    <integration-enabled>true</integration-enabled>
+  </component>
+  <component name="WindowStateProjectService">
+    <state x="789" y="318" key="SettingsEditor" timestamp="1596900451085">
+      <screen x="0" y="23" width="2560" height="1313" />
+    </state>
+    <state x="789" y="318" key="SettingsEditor/0.23.2560.1313@0.23.2560.1313" timestamp="1596900451085" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/format/format.go b/format/format.go
index c966182..563f82e 100644
--- a/format/format.go
+++ b/format/format.go
@@ -15,7 +15,6 @@ func RegisterAll() {
 	avutil.DefaultHandlers.Add(ts.Handler)
 	avutil.DefaultHandlers.Add(rtmp.Handler)
 	avutil.DefaultHandlers.Add(rtsp.Handler)
-	avutil.DefaultHandlers.Add(rtspv2.Handler)
 	avutil.DefaultHandlers.Add(flv.Handler)
 	avutil.DefaultHandlers.Add(aac.Handler)
 }
diff --git a/format/webrtc/adapter.go b/format/webrtc/adapter.go
new file mode 100644
index 0000000..4834bd8
--- /dev/null
+++ b/format/webrtc/adapter.go
@@ -0,0 +1,219 @@
+package webrtc
+
+import (
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"github.com/deepch/vdk/av"
+	"github.com/deepch/vdk/codec/h264parser"
+	"github.com/pion/webrtc/v3"
+	"github.com/pion/webrtc/v3/pkg/media"
+	"math/rand"
+)
+
+type Muxer struct {
+	streams map[int8]*Stream
+}
+type Stream struct {
+	codec av.CodecData
+	track *webrtc.Track
+}
+func NewMuxer() *Muxer {
+	return &Muxer{streams: make(map[int8]*Stream)}
+}
+func (self *Muxer) WriteHeader(streams []av.CodecData, sdp64 string) (string, error) {
+	if len(streams) == 0 {
+		return "",errors.New("No Stream Forund")
+	}
+	mediaEngine := webrtc.MediaEngine{}
+	sdpB, err := base64.StdEncoding.DecodeString(sdp64)
+	if err != nil {
+		return "",err
+	}
+	offer := webrtc.SessionDescription{
+		Type: webrtc.SDPTypeOffer,
+		SDP:  string(sdpB),
+	}
+	if err = mediaEngine.PopulateFromSDP(offer); err != nil {
+		return "",err
+	}
+	api := webrtc.NewAPI(webrtc.WithMediaEngine(mediaEngine))
+	peerConnection, err := api.NewPeerConnection(webrtc.Configuration{
+		ICEServers: []webrtc.ICEServer{
+			{
+				URLs: []string{"stun:stun.l.google.com:19302"},
+			},
+		},
+	})
+	if err != nil {
+		return "",err
+	}
+	for i, i2 := range streams {
+		var track *webrtc.Track
+		if i2.Type().IsVideo() {
+			track, err = peerConnection.NewTrack(getPayloadType(mediaEngine, webrtc.RTPCodecTypeVideo, i2.Type().String()), rand.Uint32(), "video", "pion")
+			if err != nil {
+				return "",err
+			}
+		} else if i2.Type().IsAudio() {
+			track, err = peerConnection.NewTrack(getPayloadType(mediaEngine, webrtc.RTPCodecTypeAudio, i2.Type().String()), rand.Uint32(), "audio", "pion")
+			if err != nil {
+				return "",err
+			}
+		}
+		_, err = peerConnection.AddTransceiverFromTrack(track,
+			webrtc.RtpTransceiverInit{
+				Direction: webrtc.RTPTransceiverDirectionSendonly,
+			},
+		)
+		if err != nil {
+			return "", err
+		}
+		_, err = peerConnection.AddTrack(track);
+		if err != nil {
+			return "",err
+		}
+		self.streams[int8(i)] = &Stream{track: track , codec: i2}
+	}
+	//iceConnectedCtx, iceConnectedCtxCancel := context.WithCancel(context.Background())
+	peerConnection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
+		fmt.Printf("Connection State has changed %s \n", connectionState.String())
+		if connectionState == webrtc.ICEConnectionStateConnected {
+		//	iceConnectedCtxCancel()
+		}
+	})
+	if err = peerConnection.SetRemoteDescription(offer); err != nil {
+		return "",err
+	}
+	answer, err := peerConnection.CreateAnswer(nil)
+	if err != nil {
+		return "",err
+	}
+	//gatherComplete := webrtc.GatheringCompletePromise(peerConnection)
+	if err = peerConnection.SetLocalDescription(answer); err != nil {
+		return "",err
+	}
+	//<-gatherComplete
+
+
+	return  base64.StdEncoding.EncodeToString([]byte(answer.SDP)), nil
+}
+func (self *Muxer) WritePacket(pkt av.Packet) (err error) {
+	if tmp, ok := self.streams[pkt.Idx]; ok {
+		switch tmp.codec.Type() {
+		case av.H264:
+			codec := tmp.codec.(h264parser.CodecData)
+			if pkt.IsKeyFrame {
+				pkt.Data = append([]byte("\000\000\001"+string(codec.SPS())+"\000\000\001"+string(codec.PPS())+"\000\000\001"), pkt.Data[4:]...)
+
+			} else {
+				pkt.Data = pkt.Data[4:]
+			}
+			return tmp.track.WriteSample(media.Sample{Data: pkt.Data, Samples: 90000})
+		default:
+			return errors.New("Media Track Not Found")
+		}
+	}
+	return errors.New("Media Track Not Found")
+}
+func getPayloadType(m webrtc.MediaEngine, codecType webrtc.RTPCodecType, codecName string) uint8 {
+	for _, codec := range m.GetCodecsByKind(codecType) {
+		if codec.Name == codecName {
+			return codec.PayloadType
+		}
+	}
+	panic(fmt.Sprintf("Remote peer does not support %s", codecName))
+}
+
+/*
+//MuxerRTC muxer
+type MuxerRTC struct {
+	Peer  *webrtc.PeerConnection
+	Muxer string
+	Track []*webrtc.Track
+}
+
+//NewWebRT adapter
+func NewWebRT() *MuxerRTC {
+	peerConnection, err := webrtc.NewPeerConnection(webrtc.Configuration{
+		ICEServers: []webrtc.ICEServer{
+			{
+				URLs: []string{"stun:stun.l.google.com:19302"},
+			},
+		},
+	})
+	if err != nil {
+		panic(err)
+	}
+	log.Println(peerConnection)
+	return &MuxerRTC{Peer: peerConnection}
+}
+
+//AddTrackVideo video
+func (element *MuxerRTC) AddTrackVideo() error {
+	Track, err := element.Peer.NewTrack(webrtc.DefaultPayloadTypeH264, rand.Uint32(), "video", "video")
+	if err != nil {
+		return err
+	}
+	_, err = element.Peer.AddTrack(Track)
+	if err != nil {
+		return err
+	}
+	element.Track = append(element.Track, Track)
+	return nil
+}
+
+//AddTrackAudio audio
+func (element *MuxerRTC) AddTrackAudio() error {
+	Track, err := element.Peer.NewTrack(webrtc.DefaultPayloadTypePCMA, rand.Uint32(), "audio", "audio")
+	if err != nil {
+		return err
+	}
+	_, err = element.Peer.AddTrack(Track)
+	if err != nil {
+		return err
+	}
+	_, err = element.Peer.AddTransceiverFromTrack(Track, webrtc.RtpTransceiverInit{Direction: webrtc.RTPTransceiverDirectionSendonly})
+	if err != nil {
+		return err
+	}
+	element.Track = append(element.Track, Track)
+	return nil
+}
+
+//CreateAnswer func
+func (element *MuxerRTC) CreateAnswer(data string) ([]byte, error) {
+	//	log.Println(string(data))
+
+	//	sd, err := base64.StdEncoding.DecodeString(data)
+	//	if err != nil {
+	//		log.Println("DecodeString", err)
+	//		return nil, err
+	//	}
+	offer := webrtc.SessionDescription{
+		Type: webrtc.SDPTypeOffer,
+		SDP:  data,
+	}
+	if err := element.Peer.SetRemoteDescription(offer); err != nil {
+		log.Println("SetRemoteDescription", err)
+
+		return nil, err
+	}
+	answer, err := element.Peer.CreateAnswer(nil)
+	if err != nil {
+		log.Println("CreateAnswer", err)
+
+		return nil, err
+	}
+	return []byte(answer.SDP), nil
+}
+
+//WritePacket to stream
+func (element *MuxerRTC) WritePacket(id int, data []byte, smaple uint32) error {
+	err := element.Track[id].WriteSample(media.Sample{Data: data, Samples: smaple})
+	return err
+}
+func (element *MuxerRTC) Close() {
+	return
+}
+*/
diff --git a/go.mod b/go.mod
index 11b1d18..8ba6006 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
 module github.com/deepch/vdk
 
 go 1.14
+
+require github.com/pion/webrtc/v3 v3.0.0-beta.1 // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..4539dca
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,95 @@
+github.com/alangpierce/go-forceexport v0.0.0-20160317203124-8f1d6941cd75/go.mod h1:uAXEEpARkRhCZfEvy/y0Jcc888f9tHCc1W7/UeEtreE=
+github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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