1 files changed, 17 insertions, 3 deletions
diff --git a/dom/media/webm/NesteggPacketHolder.h b/dom/media/webm/NesteggPacketHolder.h
index 7c74f752d3..e1e7822106 100644
--- a/dom/media/webm/NesteggPacketHolder.h
+++ b/dom/media/webm/NesteggPacketHolder.h
@@ -25,11 +25,12 @@ class NesteggPacketHolder {
         mOffset(-1),
         mTimestamp(-1),
         mDuration(-1),
+        mDefaultDuration(-1),
         mTrack(0),
         mIsKeyframe(false) {}
 
-  bool Init(nestegg_packet* aPacket, int64_t aOffset, unsigned aTrack,
-            bool aIsKeyframe) {
+  bool Init(nestegg_packet* aPacket, nestegg* aContext, int64_t aOffset,
+            unsigned aTrack, bool aIsKeyframe) {
     uint64_t timestamp_ns;
     if (nestegg_packet_tstamp(aPacket, &timestamp_ns) == -1) {
       return false;
@@ -47,6 +48,10 @@ class NesteggPacketHolder {
     if (!nestegg_packet_duration(aPacket, &duration_ns)) {
       mDuration = duration_ns / 1000;
     }
+    if (!nestegg_track_default_duration(aContext, mTrack, &duration_ns)) {
+      mDefaultDuration = duration_ns / 1000;
+    }
+
     return true;
   }
 
@@ -66,6 +71,10 @@ class NesteggPacketHolder {
     MOZ_ASSERT(IsInitialized());
     return mDuration;
   }
+  int64_t DefaultDuration() const {
+    MOZ_ASSERT(IsInitialized());
+    return mDefaultDuration;
+  }
   unsigned Track() {
     MOZ_ASSERT(IsInitialized());
     return mTrack;
@@ -78,7 +87,7 @@ class NesteggPacketHolder {
  private:
   ~NesteggPacketHolder() { nestegg_free_packet(mPacket); }
 
-  bool IsInitialized() { return mOffset >= 0; }
+  bool IsInitialized() const { return mOffset >= 0; }
 
   nestegg_packet* mPacket;
 
@@ -90,8 +99,13 @@ class NesteggPacketHolder {
   int64_t mTimestamp;
 
   // Packet duration in microseconds; -1 if unknown or retrieval failed.
+  // https://www.webmproject.org/docs/container/#BlockDuration
   int64_t mDuration;
 
+  // Default durtaion in microseconds; -1 if unknown or retrieval failed.
+  // https://www.webmproject.org/docs/container/#Duration
+  int64_t mDefaultDuration;
+
   // Track ID.
   unsigned mTrack;