Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 162 insertions, 0 deletions

diff --git a/third_party/libwebrtc/common_video/framerate_controller_unittest.cc b/third_party/libwebrtc/common_video/framerate_controller_unittest.cc
new file mode 100644
index 0000000000..690076ca61
--- /dev/null
+++ b/third_party/libwebrtc/common_video/framerate_controller_unittest.cc
@@ -0,0 +1,162 @@
+/*
+ *  Copyright 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 "common_video/framerate_controller.h"
+
+#include <limits>
+
+#include "rtc_base/time_utils.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace {
+constexpr int kInputFps = 30;
+constexpr int kNumFrames = 60;
+}  // namespace
+
+class FramerateControllerTest : public ::testing::Test {
+ protected:
+  int64_t GetNextTimestampNs() {
+    int64_t interval_us = rtc::kNumMicrosecsPerSec / kInputFps;
+    next_timestamp_us_ += interval_us;
+    return next_timestamp_us_ * rtc::kNumNanosecsPerMicrosec;
+  }
+
+  int64_t next_timestamp_us_ = rtc::TimeMicros();
+  FramerateController controller_;
+};
+
+TEST_F(FramerateControllerTest, NoFramesDroppedIfNothingRequested) {
+  // Default max framerate is maxdouble.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_FALSE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, AllFramesDroppedIfZeroRequested) {
+  controller_.SetMaxFramerate(0);
+
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_TRUE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, AllFramesDroppedIfNegativeRequested) {
+  controller_.SetMaxFramerate(-1);
+
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_TRUE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, EverySecondFrameDroppedIfHalfRequested) {
+  controller_.SetMaxFramerate(kInputFps / 2);
+
+  // The first frame should not be dropped.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_EQ(i % 2 == 0, controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, EveryThirdFrameDroppedIfTwoThirdsRequested) {
+  controller_.SetMaxFramerate(kInputFps * 2 / 3);
+
+  // The first frame should not be dropped.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_EQ(i % 3 == 0, controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, NoFrameDroppedIfTwiceRequested) {
+  controller_.SetMaxFramerate(kInputFps * 2);
+
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_FALSE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, TestAverageFramerate) {
+  const double kMaxFps = 18.2;
+  controller_.SetMaxFramerate(kMaxFps);
+
+  const int kNumSec = 10;
+  int frames_kept = 0;
+  for (int i = 0; i < kInputFps * kNumSec; ++i) {
+    if (!controller_.ShouldDropFrame(GetNextTimestampNs()))
+      ++frames_kept;
+  }
+  double average_fps = static_cast<double>(frames_kept) / kNumSec;
+  EXPECT_NEAR(kMaxFps, average_fps, 0.01);
+}
+
+TEST_F(FramerateControllerTest, NoFrameDroppedForLargeTimestampOffset) {
+  controller_.SetMaxFramerate(kInputFps);
+  EXPECT_FALSE(controller_.ShouldDropFrame(0));
+
+  const int64_t kLargeOffsetNs = -987654321LL * 1000;
+  EXPECT_FALSE(controller_.ShouldDropFrame(kLargeOffsetNs));
+
+  int64_t input_interval_ns = rtc::kNumNanosecsPerSec / kInputFps;
+  EXPECT_FALSE(controller_.ShouldDropFrame(kLargeOffsetNs + input_interval_ns));
+}
+
+TEST_F(FramerateControllerTest, NoFrameDroppedIfInputWithJitterRequested) {
+  controller_.SetMaxFramerate(kInputFps);
+
+  // Input fps with jitter.
+  int64_t input_interval_ns = rtc::kNumNanosecsPerSec / kInputFps;
+  EXPECT_FALSE(controller_.ShouldDropFrame(input_interval_ns * 0 / 10));
+  EXPECT_FALSE(controller_.ShouldDropFrame(input_interval_ns * 10 / 10 - 1));
+  EXPECT_FALSE(controller_.ShouldDropFrame(input_interval_ns * 25 / 10));
+  EXPECT_FALSE(controller_.ShouldDropFrame(input_interval_ns * 30 / 10));
+  EXPECT_FALSE(controller_.ShouldDropFrame(input_interval_ns * 35 / 10));
+  EXPECT_FALSE(controller_.ShouldDropFrame(input_interval_ns * 50 / 10));
+}
+
+TEST_F(FramerateControllerTest, FrameDroppedWhenReductionRequested) {
+  controller_.SetMaxFramerate(kInputFps);
+
+  // Expect no frame drop.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_FALSE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+
+  // Reduce max frame rate.
+  controller_.SetMaxFramerate(kInputFps / 2);
+
+  // Verify that every other frame is dropped.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_EQ(i % 2 == 0, controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, NoFramesDroppedAfterReset) {
+  controller_.SetMaxFramerate(0);
+
+  // All frames dropped.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_TRUE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+
+  controller_.Reset();
+
+  // Expect no frame drop after reset.
+  for (int i = 1; i < kNumFrames; ++i)
+    EXPECT_FALSE(controller_.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+TEST_F(FramerateControllerTest, TestKeepFrame) {
+  FramerateController controller(kInputFps / 2);
+
+  EXPECT_FALSE(controller.ShouldDropFrame(GetNextTimestampNs()));
+  EXPECT_TRUE(controller.ShouldDropFrame(GetNextTimestampNs()));
+  EXPECT_FALSE(controller.ShouldDropFrame(GetNextTimestampNs()));
+  EXPECT_TRUE(controller.ShouldDropFrame(GetNextTimestampNs()));
+  EXPECT_FALSE(controller.ShouldDropFrame(GetNextTimestampNs()));
+
+  // Next frame should be dropped.
+  // Keep this frame (e.g. in case of a key frame).
+  controller.KeepFrame(GetNextTimestampNs());
+  // Expect next frame to be dropped instead.
+  EXPECT_TRUE(controller.ShouldDropFrame(GetNextTimestampNs()));
+}
+
+}  // namespace webrtc