own displayed video metadata on render thread

.gitignore

@@ -1 +1,2 @@
 build
+imgui.ini

cmd/mxl-player/main.go

@@ -614,6 +614,10 @@ func main() {
 		sdl.SetWindowFullscreen(windowHandler, true)
 	}
 	var (
+		displayedVideoWidth  uint32
+		displayedVideoHeight uint32
+		displayedVideoStride uint32
+
 		fps        float64
 		lastIndex  uint64
 		dropped    uint64
@@ -692,6 +696,9 @@ func main() {
 			}
 
 			shownIndex = pendingFrame.Frame.Index
+			displayedVideoWidth = pendingFrame.Frame.Width
+			displayedVideoHeight = pendingFrame.Frame.Height
+			displayedVideoStride = pendingFrame.Frame.Stride
 			hasFrame = true
 		} else if frameErr != nil &&
 			!errors.Is(frameErr, context.DeadlineExceeded) &&
@@ -731,14 +738,12 @@ func main() {
 				cimgui.Text(fmt.Sprintf("FPS: %.1f", fps))
 				cimgui.Text(fmt.Sprintf("Dropped: %d", dropped))
 				cimgui.Text(fmt.Sprintf("Index: %d", shownIndex))
-				if videoSrc != nil {
+				if displayedVideoWidth != 0 && displayedVideoHeight != 0 {
-					cimgui.Text(fmt.Sprintf("Video: %dx%d %.2fp", videoSrc.Width(), videoSrc.Height(),
+					cimgui.Text(fmt.Sprintf(
-						float32(videoSrc.Rate().Num/videoSrc.Rate().Den)))
+						"Video: %dx%d",
-				}
+						displayedVideoWidth,
-				if syncSrc != nil {
+						displayedVideoHeight,
-					cimgui.Text(fmt.Sprintf("Video: %dx%d %.2fp", syncSrc.Width(), syncSrc.Height(),
+					))
-						float32(syncSrc.Rate().Num/syncSrc.Rate().Den)))
-					cimgui.Text(fmt.Sprintf("Audio: %dch %dkHz", syncSrc.Channels(), syncSrc.AudioRate().Num))
 				}
 				cimgui.Text("\nPress F1 to hide stats")
 				cimgui.Text("Q or Esc to quit")
@@ -757,13 +762,11 @@ func main() {
 			gui.EndFrame()
 			lastFrame = time.Now()
 			// end of test widget
-			var w, h, stride uint32
+			err := r.DrawFrame(
-			if syncSrc != nil {
+				displayedVideoWidth,
-				w, h, stride = syncSrc.Width(), syncSrc.Height(), syncSrc.Stride()
+				displayedVideoHeight,
-			} else if videoSrc != nil {
+				displayedVideoStride,
-				w, h, stride = videoSrc.Width(), videoSrc.Height(), videoSrc.Stride()
+			)
-			}
-			err := r.DrawFrame(w, h, stride)
 			if errors.Is(err, renderer.ErrOutOfDate) {
 				if rerr := r.RecreateSwapchain(); rerr != nil {
 					if errors.Is(rerr, renderer.ErrMinimized) {