move shared code to pkg.

pkg/types/webrtc.go

@@ -0,0 +1,42 @@
+package types
+
+import (
+	"errors"
+
+	"github.com/pion/webrtc/v3"
+)
+
+var (
+	ErrWebRTCVideoNotFound       = errors.New("webrtc video not found")
+	ErrWebRTCDataChannelNotFound = errors.New("webrtc data channel not found")
+	ErrWebRTCConnectionNotFound  = errors.New("webrtc connection not found")
+)
+
+type ICEServer struct {
+	URLs       []string `mapstructure:"urls"       json:"urls"`
+	Username   string   `mapstructure:"username"   json:"username,omitempty"`
+	Credential string   `mapstructure:"credential" json:"credential,omitempty"`
+}
+
+type WebRTCPeer interface {
+	CreateOffer(ICERestart bool) (*webrtc.SessionDescription, error)
+	CreateAnswer() (*webrtc.SessionDescription, error)
+	SetOffer(sdp string) error
+	SetAnswer(sdp string) error
+	SetCandidate(candidate webrtc.ICECandidateInit) error
+
+	SetVideoID(videoID string) error
+	SendCursorPosition(x, y int) error
+	SendCursorImage(cur *CursorImage, img []byte) error
+
+	Destroy()
+}
+
+type WebRTCManager interface {
+	Start()
+	Shutdown() error
+
+	ICEServers() []ICEServer
+
+	CreatePeer(session Session, videoID string) (*webrtc.SessionDescription, error)
+}