From 91fa6937091d808bf17ec261427db6404cc1d7ce Mon Sep 17 00:00:00 2001
From: Juliusz Chroboczek <jch@irif.fr>
Date: Mon, 17 May 2021 13:51:29 +0200
Subject: [PATCH] Display max layer in stats.

---
 rtpconn/rtpstats.go | 6 +++---
 static/stats.js     | 3 ++-
 stats/stats.go      | 3 ++-
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/rtpconn/rtpstats.go b/rtpconn/rtpstats.go
index dee64b9..98f17c4 100644
--- a/rtpconn/rtpstats.go
+++ b/rtpconn/rtpstats.go
@@ -49,8 +49,7 @@ func (c *webClient) GetStats() *stats.Client {
 			Id: down.id,
 		}
 		for _, t := range down.tracks {
-			l, _, _ := t.getLayerInfo()
-			layer := int(l)
+			l, _, ml := t.getLayerInfo()
 			rate, _ := t.rate.Estimate()
 			rtt := rtptime.ToDuration(t.getRTT(),
 				rtptime.JiffiesPerSec)
@@ -58,7 +57,8 @@ func (c *webClient) GetStats() *stats.Client {
 			j := time.Duration(jitter) * time.Second /
 				time.Duration(t.track.Codec().ClockRate)
 			conns.Tracks = append(conns.Tracks, stats.Track{
-				Layer:      &layer,
+				Layer:      &l,
+				MaxLayer:   &ml,
 				Bitrate:    uint64(rate) * 8,
 				MaxBitrate: t.maxBitrate.Get(jiffies),
 				Loss:       float64(loss) / 256.0,
diff --git a/static/stats.js b/static/stats.js
index 6290015..bb67547 100644
--- a/static/stats.js
+++ b/static/stats.js
@@ -95,7 +95,8 @@ function formatTrack(table, track) {
     tr.appendChild(document.createElement('td'));
     tr.appendChild(document.createElement('td'));
     let td = document.createElement('td');
-    td.textContent = track.layer;
+    if(track.layer && track.maxLayer)
+        td.textContent = `${track.layer}/${track.maxLayer}`;
     tr.appendChild(td);
     let td2 = document.createElement('td');
     if(track.maxBitrate)
diff --git a/stats/stats.go b/stats/stats.go
index 073e218..1a0d0b6 100644
--- a/stats/stats.go
+++ b/stats/stats.go
@@ -47,7 +47,8 @@ func (d *Duration) UnmarshalJSON(buf []byte) error {
 }
 
 type Track struct {
-	Layer      *int     `json:"layer,omitempty"`
+	Layer      *uint8   `json:"layer,omitempty"`
+	MaxLayer   *uint8   `json:"maxLayer,omitempty"`
 	Bitrate    uint64   `json:"bitrate"`
 	MaxBitrate uint64   `json:"maxBitrate,omitempty"`
 	Loss       float64  `json:"loss"`