Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 168 insertions, 0 deletions

diff --git a/dom/media/driftcontrol/gtest/TestDriftController.cpp b/dom/media/driftcontrol/gtest/TestDriftController.cpp
new file mode 100644
index 0000000000..33486f945f
--- /dev/null
+++ b/dom/media/driftcontrol/gtest/TestDriftController.cpp
@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include "DriftController.h"
+#include "mozilla/Maybe.h"
+
+using namespace mozilla;
+
+TEST(TestDriftController, Basic)
+{
+  // The buffer level is the only input to the controller logic.
+  constexpr uint32_t buffered = 5 * 480;
+  constexpr uint32_t bufferedLow = 3 * 480;
+  constexpr uint32_t bufferedHigh = 7 * 480;
+
+  DriftController c(48000, 48000, media::TimeUnit::FromSeconds(0.05));
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000U);
+
+  // The adjustment interval is 1s.
+  const auto oneSec = media::TimeUnit(48000, 48000);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedLow, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48048u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 47952u);
+}
+
+TEST(TestDriftController, BasicResampler)
+{
+  // The buffer level is the only input to the controller logic.
+  constexpr uint32_t buffered = 5 * 240;
+  constexpr uint32_t bufferedLow = 3 * 240;
+  constexpr uint32_t bufferedHigh = 7 * 240;
+
+  DriftController c(24000, 48000, media::TimeUnit::FromSeconds(0.05));
+
+  // The adjustment interval is 1s.
+  const auto oneSec = media::TimeUnit(48000, 48000);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // low
+  c.UpdateClock(oneSec, oneSec, bufferedLow, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48048u);
+
+  // high
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // high
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 47964u);
+}
+
+TEST(TestDriftController, BufferedInput)
+{
+  // The buffer level is the only input to the controller logic.
+  constexpr uint32_t buffered = 5 * 480;
+  constexpr uint32_t bufferedLow = 3 * 480;
+  constexpr uint32_t bufferedHigh = 7 * 480;
+
+  DriftController c(48000, 48000, media::TimeUnit::FromSeconds(0.05));
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // The adjustment interval is 1s.
+  const auto oneSec = media::TimeUnit(48000, 48000);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // 0 buffered when updating correction
+  c.UpdateClock(oneSec, oneSec, 0, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48048u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedLow, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 47952u);
+}
+
+TEST(TestDriftController, BufferedInputWithResampling)
+{
+  // The buffer level is the only input to the controller logic.
+  constexpr uint32_t buffered = 5 * 240;
+  constexpr uint32_t bufferedLow = 3 * 240;
+  constexpr uint32_t bufferedHigh = 7 * 240;
+
+  DriftController c(24000, 48000, media::TimeUnit::FromSeconds(0.05));
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // The adjustment interval is 1s.
+  const auto oneSec = media::TimeUnit(24000, 24000);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // 0 buffered when updating correction
+  c.UpdateClock(oneSec, oneSec, 0, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48048u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedLow, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 47952u);
+}
+
+TEST(TestDriftController, SmallError)
+{
+  // The buffer level is the only input to the controller logic.
+  constexpr uint32_t buffered = 5 * 480;
+  constexpr uint32_t bufferedLow = buffered - 48;
+  constexpr uint32_t bufferedHigh = buffered + 48;
+
+  DriftController c(48000, 48000, media::TimeUnit::FromSeconds(0.05));
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  // The adjustment interval is 1s.
+  const auto oneSec = media::TimeUnit(48000, 48000);
+
+  c.UpdateClock(oneSec, oneSec, buffered, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedLow, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+  c.UpdateClock(oneSec, oneSec, bufferedHigh, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000u);
+}
+
+TEST(TestDriftController, SmallBufferedFrames)
+{
+  // The buffer level is the only input to the controller logic.
+  constexpr uint32_t bufferedLow = 3 * 480;
+
+  DriftController c(48000, 48000, media::TimeUnit::FromSeconds(0.05));
+  media::TimeUnit oneSec = media::TimeUnit::FromSeconds(1);
+  media::TimeUnit hundredMillis = oneSec / 10;
+
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000U);
+  for (uint32_t i = 0; i < 9; ++i) {
+    c.UpdateClock(hundredMillis, hundredMillis, bufferedLow, 0);
+  }
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48000U);
+  c.UpdateClock(hundredMillis, hundredMillis, bufferedLow, 0);
+  EXPECT_EQ(c.GetCorrectedTargetRate(), 48048U);
+}