diff options
Diffstat (limited to 'third_party/libwebrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time_unittest.cc')
-rw-r--r-- | third_party/libwebrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time_unittest.cc | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time_unittest.cc b/third_party/libwebrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time_unittest.cc new file mode 100644 index 0000000000..d8ef23cc92 --- /dev/null +++ b/third_party/libwebrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time_unittest.cc @@ -0,0 +1,296 @@ +/* + * Copyright (c) 2013 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/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.h" + +#include "modules/remote_bitrate_estimator/remote_bitrate_estimator_unittest_helper.h" +#include "test/gtest.h" + +namespace webrtc { + +class RemoteBitrateEstimatorAbsSendTimeTest + : public RemoteBitrateEstimatorTest { + public: + RemoteBitrateEstimatorAbsSendTimeTest() {} + + RemoteBitrateEstimatorAbsSendTimeTest( + const RemoteBitrateEstimatorAbsSendTimeTest&) = delete; + RemoteBitrateEstimatorAbsSendTimeTest& operator=( + const RemoteBitrateEstimatorAbsSendTimeTest&) = delete; + + virtual void SetUp() { + bitrate_estimator_.reset(new RemoteBitrateEstimatorAbsSendTime( + bitrate_observer_.get(), &clock_)); + } + + protected: +}; + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, InitialBehavior) { + InitialBehaviorTestHelper(674840); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, RateIncreaseReordering) { + RateIncreaseReorderingTestHelper(674840); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, RateIncreaseRtpTimestamps) { + RateIncreaseRtpTimestampsTestHelper(1237); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropOneStream) { + CapacityDropTestHelper(1, false, 633, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropPosOffsetChange) { + CapacityDropTestHelper(1, false, 267, 30000); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropNegOffsetChange) { + CapacityDropTestHelper(1, false, 267, -30000); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropOneStreamWrap) { + CapacityDropTestHelper(1, true, 633, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropTwoStreamsWrap) { + CapacityDropTestHelper(2, true, 700, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropThreeStreamsWrap) { + CapacityDropTestHelper(3, true, 633, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropThirteenStreamsWrap) { + CapacityDropTestHelper(13, true, 667, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropNineteenStreamsWrap) { + CapacityDropTestHelper(19, true, 667, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, CapacityDropThirtyStreamsWrap) { + CapacityDropTestHelper(30, true, 667, 0); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestTimestampGrouping) { + TestTimestampGroupingTestHelper(); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestShortTimeoutAndWrap) { + // Simulate a client leaving and rejoining the call after 35 seconds. This + // will make abs send time wrap, so if streams aren't timed out properly + // the next 30 seconds of packets will be out of order. + TestWrappingHelper(35); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestLongTimeoutAndWrap) { + // Simulate a client leaving and rejoining the call after some multiple of + // 64 seconds later. This will cause a zero difference in abs send times due + // to the wrap, but a big difference in arrival time, if streams aren't + // properly timed out. + TestWrappingHelper(10 * 64); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestProcessAfterTimeout) { + // This time constant must be equal to the ones defined for the + // RemoteBitrateEstimator. + const int64_t kStreamTimeOutMs = 2000; + const int64_t kProcessIntervalMs = 1000; + IncomingPacket(0, 1000, clock_.TimeInMilliseconds(), 0, 0); + clock_.AdvanceTimeMilliseconds(kStreamTimeOutMs + 1); + // Trigger timeout. + bitrate_estimator_->Process(); + clock_.AdvanceTimeMilliseconds(kProcessIntervalMs); + // This shouldn't crash. + bitrate_estimator_->Process(); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestProbeDetection) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // First burst sent at 8 * 1000 / 10 = 800 kbps. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(10); + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * now_ms, AbsSendTime(now_ms, 1000)); + } + + // Second burst sent at 8 * 1000 / 5 = 1600 kbps. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(5); + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * now_ms, AbsSendTime(now_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_GT(bitrate_observer_->latest_bitrate(), 1500000u); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, + TestProbeDetectionNonPacedPackets) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // First burst sent at 8 * 1000 / 10 = 800 kbps, but with every other packet + // not being paced which could mess things up. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(5); + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * now_ms, AbsSendTime(now_ms, 1000)); + // Non-paced packet, arriving 5 ms after. + clock_.AdvanceTimeMilliseconds(5); + IncomingPacket(0, 100, now_ms, 90 * now_ms, AbsSendTime(now_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_GT(bitrate_observer_->latest_bitrate(), 800000u); +} + +// Packets will require 5 ms to be transmitted to the receiver, causing packets +// of the second probe to be dispersed. +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, + TestProbeDetectionTooHighBitrate) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + int64_t send_time_ms = 0; + // First burst sent at 8 * 1000 / 10 = 800 kbps. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(10); + now_ms = clock_.TimeInMilliseconds(); + send_time_ms += 10; + IncomingPacket(0, 1000, now_ms, 90 * send_time_ms, + AbsSendTime(send_time_ms, 1000)); + } + + // Second burst sent at 8 * 1000 / 5 = 1600 kbps, arriving at 8 * 1000 / 8 = + // 1000 kbps. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(8); + now_ms = clock_.TimeInMilliseconds(); + send_time_ms += 5; + IncomingPacket(0, 1000, now_ms, send_time_ms, + AbsSendTime(send_time_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_NEAR(bitrate_observer_->latest_bitrate(), 800000u, 10000); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, + TestProbeDetectionSlightlyFasterArrival) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // First burst sent at 8 * 1000 / 10 = 800 kbps. + // Arriving at 8 * 1000 / 5 = 1600 kbps. + int64_t send_time_ms = 0; + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(5); + send_time_ms += 10; + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * send_time_ms, + AbsSendTime(send_time_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_GT(bitrate_observer_->latest_bitrate(), 800000u); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestProbeDetectionFasterArrival) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // First burst sent at 8 * 1000 / 10 = 800 kbps. + // Arriving at 8 * 1000 / 5 = 1600 kbps. + int64_t send_time_ms = 0; + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(1); + send_time_ms += 10; + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * send_time_ms, + AbsSendTime(send_time_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_FALSE(bitrate_observer_->updated()); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, TestProbeDetectionSlowerArrival) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // First burst sent at 8 * 1000 / 5 = 1600 kbps. + // Arriving at 8 * 1000 / 7 = 1142 kbps. + int64_t send_time_ms = 0; + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(7); + send_time_ms += 5; + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * send_time_ms, + AbsSendTime(send_time_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_NEAR(bitrate_observer_->latest_bitrate(), 1140000, 10000); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, + TestProbeDetectionSlowerArrivalHighBitrate) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // Burst sent at 8 * 1000 / 1 = 8000 kbps. + // Arriving at 8 * 1000 / 2 = 4000 kbps. + int64_t send_time_ms = 0; + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(2); + send_time_ms += 1; + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * send_time_ms, + AbsSendTime(send_time_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_NEAR(bitrate_observer_->latest_bitrate(), 4000000u, 10000); +} + +TEST_F(RemoteBitrateEstimatorAbsSendTimeTest, ProbingIgnoresSmallPackets) { + const int kProbeLength = 5; + int64_t now_ms = clock_.TimeInMilliseconds(); + // Probing with 200 bytes every 10 ms, should be ignored by the probe + // detection. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(10); + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 200, now_ms, 90 * now_ms, AbsSendTime(now_ms, 1000)); + } + + bitrate_estimator_->Process(); + EXPECT_FALSE(bitrate_observer_->updated()); + + // Followed by a probe with 1000 bytes packets, should be detected as a + // probe. + for (int i = 0; i < kProbeLength; ++i) { + clock_.AdvanceTimeMilliseconds(10); + now_ms = clock_.TimeInMilliseconds(); + IncomingPacket(0, 1000, now_ms, 90 * now_ms, AbsSendTime(now_ms, 1000)); + } + + // Wait long enough so that we can call Process again. + clock_.AdvanceTimeMilliseconds(1000); + + bitrate_estimator_->Process(); + EXPECT_TRUE(bitrate_observer_->updated()); + EXPECT_NEAR(bitrate_observer_->latest_bitrate(), 800000u, 10000); +} +} // namespace webrtc |