File: 0069.patch

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From: Andreas Pehrson <apehrson@mozilla.com>
Date: Wed, 11 Jan 2023 22:42:00 +0000
Subject: Bug 1800942 - Add DCHECKs to
 TimestampExtrapolator::ExtrapolateLocalTime. r=mjf

Differential Revision: https://phabricator.services.mozilla.com/D166536
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/c5df7f40392464ffc63f44a53ddcaab2091741e0
---
 modules/video_coding/timing/timestamp_extrapolator.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/video_coding/timing/timestamp_extrapolator.cc b/modules/video_coding/timing/timestamp_extrapolator.cc
index 404ea60c05..9d21f1b59d 100644
--- a/modules/video_coding/timing/timestamp_extrapolator.cc
+++ b/modules/video_coding/timing/timestamp_extrapolator.cc
@@ -144,6 +144,7 @@ void TimestampExtrapolator::Update(Timestamp now, uint32_t ts90khz) {
 std::optional<Timestamp> TimestampExtrapolator::ExtrapolateLocalTime(
     uint32_t timestamp90khz) const {
   int64_t unwrapped_ts90khz = unwrapper_.PeekUnwrap(timestamp90khz);
+  RTC_DCHECK_GE(unwrapped_ts90khz, 0);
 
   if (!first_unwrapped_timestamp_) {
     return std::nullopt;