add legacy simulcast stream that shows pointer.

server/dev/runtime/config.yml

@@ -1,8 +1,27 @@
 capture:
   video:
     codec: vp8
+    # legacy format is not added to the list of ids so that its ignored by bandwidth estimator
     ids: [ hq, lq ]
     pipelines:
+      # legacy format is the same as hq, but with show_pointer enabled
+      legacy:
+        fps: 25
+        gst_encoder: vp8enc
+        gst_params:
+          target-bitrate: round(3072 * 650)
+          cpu-used: 4
+          end-usage: cbr
+          threads: 4
+          deadline: 1
+          undershoot: 95
+          buffer-size: (3072 * 4)
+          buffer-initial-size: (3072 * 2)
+          buffer-optimal-size: (3072 * 3)
+          keyframe-max-dist: 25
+          min-quantizer: 4
+          max-quantizer: 20
+        show_pointer: true
       hq:
         fps: 25
         gst_encoder: vp8enc

server/internal/capture/manager.go

@@ -49,8 +49,8 @@ func New(desktop types.DesktopManager, config *config.Capture) *CaptureManagerCt
 			}
 
 			return fmt.Sprintf(
-				"ximagesrc display-name=%s show-pointer=false use-damage=false "+
-					"%s ! appsink name=appsink", config.Display, pipeline,
+				"ximagesrc display-name=%s show-pointer=%v use-damage=false "+
+					"%s ! appsink name=appsink", config.Display, pipelineConf.ShowPointer, pipeline,
 			), nil
 		}
 

server/internal/config/capture.go

@@ -359,9 +359,17 @@ func (s *Capture) Set() {
 					"min-quantizer":       "4",
 					"max-quantizer":       "20",
 				},
+				ShowPointer: viper.GetBool("legacy"),
 			},
 		}
 		s.VideoIDs = []string{"main"}
+
+		if viper.GetBool("legacy") {
+			legacyPipeline := s.VideoPipelines["main"]
+			legacyPipeline.ShowPointer = true
+			s.VideoPipelines["legacy"] = legacyPipeline
+			// we do not add legacy to VideoIDs so that its ignored by bandwidth estimator
+		}
 	}
 
 	// audio
@@ -463,7 +471,13 @@ func (s *Capture) SetV2() {
 				"main": {
 					GstPipeline: pipeline,
 				},
+				"legacy": {
+					GstPipeline: pipeline,
+					ShowPointer: true,
+				},
 			}
+			// we do not add legacy to VideoIDs so that its ignored by bandwidth estimator
+			s.VideoIDs = []string{"main"}
 			// TODO: add deprecated warning and proper alternative
 		}
 	}

server/internal/http/legacy/wstobackend.go

@@ -60,6 +60,18 @@ func (s *session) wsToBackend(msg []byte) error {
 			s.name = request.DisplayName
 		}
 
+		// try to set legacy video stream, if it fails, it will be ignored
+		if err := s.toBackend(event.SIGNAL_VIDEO, &message.SignalVideo{
+			PeerVideoRequest: types.PeerVideoRequest{
+				Selector: &types.StreamSelector{
+					Type: types.StreamSelectorTypeExact,
+					ID:   "legacy",
+				},
+			},
+		}); err != nil {
+			return err
+		}
+
 		return s.toBackend(event.SIGNAL_ANSWER, &message.SignalDescription{
 			SDP: request.SDP,
 		})

server/pkg/types/capture.go

@@ -158,6 +158,7 @@ type VideoConfig struct {
 	GstParams   map[string]string `mapstructure:"gst_params"`   // map of expressions
 	GstSuffix   string            `mapstructure:"gst_suffix"`   // pipeline suffix, starts with !
 	GstPipeline string            `mapstructure:"gst_pipeline"` // whole pipeline as a string
+	ShowPointer bool              `mapstructure:"show_pointer"` // show pointer in the video
 }
 
 func (config *VideoConfig) GetPipeline(screen ScreenSize) (string, error) {