Add config option for logging dropped frames

pkg/config/config.yaml

@@ -143,6 +143,9 @@ emulator:
   # do not send late video frames
   skipLateFrames: false
 
+  # log dropped frames (temp)
+  logDroppedFrames: false
+
   libretro:
     # use zip compression for emulator save states
     saveCompression: true

pkg/config/emulator.go

@@ -9,13 +9,14 @@ import (
 )
 
 type Emulator struct {
-	FailFast       bool
-	Threads        int
-	Storage        string
-	LocalPath      string
-	Libretro       LibretroConfig
-	AutosaveSec    int
-	SkipLateFrames bool
+	FailFast         bool
+	Threads          int
+	Storage          string
+	LocalPath        string
+	Libretro         LibretroConfig
+	AutosaveSec      int
+	SkipLateFrames   bool
+	LogDroppedFrames bool
 }
 
 type LibretroConfig struct {

pkg/worker/caged/libretro/frontend.go

@@ -343,7 +343,10 @@ func (f *Frontend) Start() {
 				f.skipVideo = false
 			} else {
 				// lagging behind the target framerate so we don't sleep
-				f.log.Debug().Msgf("[] Frame drop: %v", elapsed)
+				if f.conf.LogDroppedFrames {
+					// !to make some stats counter instead
+					f.log.Debug().Msgf("[] Frame drop: %v", elapsed)
+				}
 				f.skipVideo = true
 			}