Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/audio_coding/neteq/underrun_optimizer_unittest.cc b/third_party/libwebrtc/modules/audio_coding/neteq/underrun_optimizer_unittest.cc
new file mode 100644
index 0000000000..a86e9cf107
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_coding/neteq/underrun_optimizer_unittest.cc
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/audio_coding/neteq/underrun_optimizer.h"
+
+#include "test/gtest.h"
+
+namespace webrtc {
+
+namespace {
+
+constexpr int kDefaultHistogramQuantile = 1020054733;  // 0.95 in Q30.
+constexpr int kForgetFactor = 32745;                   // 0.9993 in Q15.
+
+}  // namespace
+
+TEST(UnderrunOptimizerTest, ResamplePacketDelays) {
+  TickTimer tick_timer;
+  constexpr int kResampleIntervalMs = 500;
+  UnderrunOptimizer underrun_optimizer(&tick_timer, kDefaultHistogramQuantile,
+                                       kForgetFactor, absl::nullopt,
+                                       kResampleIntervalMs);
+
+  // The histogram should be updated once with the maximum delay observed for
+  // the following sequence of updates.
+  for (int i = 0; i < 500; i += 20) {
+    underrun_optimizer.Update(i);
+    EXPECT_FALSE(underrun_optimizer.GetOptimalDelayMs());
+  }
+  tick_timer.Increment(kResampleIntervalMs / tick_timer.ms_per_tick() + 1);
+  underrun_optimizer.Update(0);
+  EXPECT_EQ(underrun_optimizer.GetOptimalDelayMs(), 500);
+}
+
+}  // namespace webrtc