1 files changed, 38 insertions, 3 deletions
diff --git a/dom/media/MediaDecoder.cpp b/dom/media/MediaDecoder.cpp
index 23c30eed2a..159c6a6121 100644
--- a/dom/media/MediaDecoder.cpp
+++ b/dom/media/MediaDecoder.cpp
@@ -893,9 +893,44 @@ void MediaDecoder::FirstFrameLoaded(
 
   // We only care about video first frame.
   if (mInfo->HasVideo() && mMDSMCreationTime) {
-    mTelemetryProbesReporter->OntFirstFrameLoaded(
-        TimeStamp::Now() - *mMDSMCreationTime, IsMSE(),
-        mDecoderStateMachine->IsExternalEngineStateMachine());
+    auto info = MakeUnique<dom::MediaDecoderDebugInfo>();
+    RequestDebugInfo(*info)->Then(
+        GetMainThreadSerialEventTarget(), __func__,
+        [self = RefPtr<MediaDecoder>{this}, this, now = TimeStamp::Now(),
+         creationTime = *mMDSMCreationTime, result = std::move(info)](
+            GenericPromise::ResolveOrRejectValue&& aValue) mutable {
+          if (IsShutdown()) {
+            return;
+          }
+          if (aValue.IsReject()) {
+            NS_WARNING("Failed to get debug info for the first frame probe!");
+            return;
+          }
+          auto firstFrameLoadedTime = (now - creationTime).ToMilliseconds();
+          MOZ_ASSERT(result->mReader.mTotalReadMetadataTimeMs >= 0.0);
+          MOZ_ASSERT(result->mReader.mTotalWaitingForVideoDataTimeMs >= 0.0);
+          MOZ_ASSERT(result->mStateMachine.mTotalBufferingTimeMs >= 0.0);
+
+          using FirstFrameLoadedFlag =
+              TelemetryProbesReporter::FirstFrameLoadedFlag;
+          TelemetryProbesReporter::FirstFrameLoadedFlagSet flags;
+          if (IsMSE()) {
+            flags += FirstFrameLoadedFlag::IsMSE;
+          }
+          if (mDecoderStateMachine->IsExternalEngineStateMachine()) {
+            flags += FirstFrameLoadedFlag::IsExternalEngineStateMachine;
+          }
+          if (IsHLSDecoder()) {
+            flags += FirstFrameLoadedFlag::IsHLS;
+          }
+          if (result->mReader.mVideoHardwareAccelerated) {
+            flags += FirstFrameLoadedFlag::IsHardwareDecoding;
+          }
+          mTelemetryProbesReporter->OntFirstFrameLoaded(
+              firstFrameLoadedTime, result->mReader.mTotalReadMetadataTimeMs,
+              result->mReader.mTotalWaitingForVideoDataTimeMs,
+              result->mStateMachine.mTotalBufferingTimeMs, flags, *mInfo);
+        });
     mMDSMCreationTime.reset();
   }