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webrtc/modules/video_coding/nack_module_unittest.cc
Mirko Bonadei 92ea95e34a Fixing WebRTC after moving from src/webrtc to src/ 
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC
from src/webrtc to src/ (in order to preserve an healthy git history).
This CL takes care of fixing header guards, #include paths, etc...

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org


Bug: chromium:611808
Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578
Reviewed-on: https://webrtc-review.googlesource.com/1561
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19846}
2017-09-15 05:02:56 +00:00

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9.6 KiB
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/*
* Copyright (c) 2016 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 <cstring>
#include <memory>
#include "modules/video_coding/include/video_coding_defines.h"
#include "modules/video_coding/nack_module.h"
#include "system_wrappers/include/clock.h"
#include "test/gtest.h"
namespace webrtc {
class TestNackModule : public ::testing::Test,
public NackSender,
public KeyFrameRequestSender {
protected:
TestNackModule()
: clock_(new SimulatedClock(0)),
nack_module_(clock_.get(), this, this),
keyframes_requested_(0) {}
void SendNack(const std::vector<uint16_t>& sequence_numbers) override {
sent_nacks_.insert(sent_nacks_.end(), sequence_numbers.begin(),
sequence_numbers.end());
}
void RequestKeyFrame() override { ++keyframes_requested_; }
std::unique_ptr<SimulatedClock> clock_;
NackModule nack_module_;
std::vector<uint16_t> sent_nacks_;
int keyframes_requested_;
};
TEST_F(TestNackModule, NackOnePacket) {
VCMPacket packet;
packet.seqNum = 1;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 3;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1u, sent_nacks_.size());
EXPECT_EQ(2, sent_nacks_[0]);
}
TEST_F(TestNackModule, WrappingSeqNum) {
VCMPacket packet;
packet.seqNum = 0xfffe;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 1;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(2u, sent_nacks_.size());
EXPECT_EQ(0xffff, sent_nacks_[0]);
EXPECT_EQ(0, sent_nacks_[1]);
}
TEST_F(TestNackModule, WrappingSeqNumClearToKeyframe) {
VCMPacket packet;
packet.seqNum = 0xfffe;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 1;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(2u, sent_nacks_.size());
EXPECT_EQ(0xffff, sent_nacks_[0]);
EXPECT_EQ(0, sent_nacks_[1]);
sent_nacks_.clear();
packet.frameType = kVideoFrameKey;
packet.is_first_packet_in_frame = true;
packet.seqNum = 2;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(0u, sent_nacks_.size());
packet.seqNum = 501;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(498u, sent_nacks_.size());
for (int seq_num = 3; seq_num < 501; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 3]);
sent_nacks_.clear();
packet.frameType = kVideoFrameDelta;
packet.seqNum = 1001;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(499u, sent_nacks_.size());
for (int seq_num = 502; seq_num < 1001; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 502]);
sent_nacks_.clear();
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
EXPECT_EQ(999u, sent_nacks_.size());
EXPECT_EQ(0xffff, sent_nacks_[0]);
EXPECT_EQ(0, sent_nacks_[1]);
for (int seq_num = 3; seq_num < 501; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 1]);
for (int seq_num = 502; seq_num < 1001; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 2]);
// Adding packet 1004 will cause the nack list to reach it's max limit.
// It will then clear all nacks up to the next keyframe (seq num 2),
// thus removing 0xffff and 0 from the nack list.
sent_nacks_.clear();
packet.seqNum = 1004;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(2u, sent_nacks_.size());
EXPECT_EQ(1002, sent_nacks_[0]);
EXPECT_EQ(1003, sent_nacks_[1]);
sent_nacks_.clear();
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
EXPECT_EQ(999u, sent_nacks_.size());
for (int seq_num = 3; seq_num < 501; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 3]);
for (int seq_num = 502; seq_num < 1001; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 4]);
// Adding packet 1007 will cause the nack module to overflow again, thus
// clearing everything up to 501 which is the next keyframe.
packet.seqNum = 1007;
nack_module_.OnReceivedPacket(packet);
sent_nacks_.clear();
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
EXPECT_EQ(503u, sent_nacks_.size());
for (int seq_num = 502; seq_num < 1001; ++seq_num)
EXPECT_EQ(seq_num, sent_nacks_[seq_num - 502]);
EXPECT_EQ(1005, sent_nacks_[501]);
EXPECT_EQ(1006, sent_nacks_[502]);
}
TEST_F(TestNackModule, DontBurstOnTimeSkip) {
nack_module_.Process();
clock_->AdvanceTimeMilliseconds(20);
EXPECT_EQ(0, nack_module_.TimeUntilNextProcess());
nack_module_.Process();
clock_->AdvanceTimeMilliseconds(100);
EXPECT_EQ(0, nack_module_.TimeUntilNextProcess());
nack_module_.Process();
EXPECT_EQ(20, nack_module_.TimeUntilNextProcess());
clock_->AdvanceTimeMilliseconds(19);
EXPECT_EQ(1, nack_module_.TimeUntilNextProcess());
clock_->AdvanceTimeMilliseconds(2);
nack_module_.Process();
EXPECT_EQ(19, nack_module_.TimeUntilNextProcess());
clock_->AdvanceTimeMilliseconds(19);
EXPECT_EQ(0, nack_module_.TimeUntilNextProcess());
nack_module_.Process();
clock_->AdvanceTimeMilliseconds(21);
EXPECT_EQ(0, nack_module_.TimeUntilNextProcess());
nack_module_.Process();
EXPECT_EQ(19, nack_module_.TimeUntilNextProcess());
}
TEST_F(TestNackModule, ResendNack) {
VCMPacket packet;
packet.seqNum = 1;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 3;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1u, sent_nacks_.size());
EXPECT_EQ(2, sent_nacks_[0]);
// Default RTT is 100
clock_->AdvanceTimeMilliseconds(99);
nack_module_.Process();
EXPECT_EQ(1u, sent_nacks_.size());
clock_->AdvanceTimeMilliseconds(1);
nack_module_.Process();
EXPECT_EQ(2u, sent_nacks_.size());
nack_module_.UpdateRtt(50);
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
EXPECT_EQ(3u, sent_nacks_.size());
clock_->AdvanceTimeMilliseconds(50);
nack_module_.Process();
EXPECT_EQ(4u, sent_nacks_.size());
packet.seqNum = 2;
nack_module_.OnReceivedPacket(packet);
clock_->AdvanceTimeMilliseconds(50);
nack_module_.Process();
EXPECT_EQ(4u, sent_nacks_.size());
}
TEST_F(TestNackModule, ResendPacketMaxRetries) {
VCMPacket packet;
packet.seqNum = 1;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 3;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1u, sent_nacks_.size());
EXPECT_EQ(2, sent_nacks_[0]);
for (size_t retries = 1; retries < 10; ++retries) {
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
EXPECT_EQ(retries + 1, sent_nacks_.size());
}
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
EXPECT_EQ(10u, sent_nacks_.size());
}
TEST_F(TestNackModule, TooLargeNackList) {
VCMPacket packet;
packet.seqNum = 0;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 1001;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1000u, sent_nacks_.size());
EXPECT_EQ(0, keyframes_requested_);
packet.seqNum = 1003;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1000u, sent_nacks_.size());
EXPECT_EQ(1, keyframes_requested_);
packet.seqNum = 1004;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1000u, sent_nacks_.size());
EXPECT_EQ(1, keyframes_requested_);
}
TEST_F(TestNackModule, TooLargeNackListWithKeyFrame) {
VCMPacket packet;
packet.seqNum = 0;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 1;
packet.is_first_packet_in_frame = true;
packet.frameType = kVideoFrameKey;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 1001;
packet.is_first_packet_in_frame = false;
packet.frameType = kVideoFrameKey;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(999u, sent_nacks_.size());
EXPECT_EQ(0, keyframes_requested_);
packet.seqNum = 1003;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1000u, sent_nacks_.size());
EXPECT_EQ(0, keyframes_requested_);
packet.seqNum = 1005;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(1000u, sent_nacks_.size());
EXPECT_EQ(1, keyframes_requested_);
}
TEST_F(TestNackModule, ClearUpTo) {
VCMPacket packet;
packet.seqNum = 0;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 100;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(99u, sent_nacks_.size());
sent_nacks_.clear();
clock_->AdvanceTimeMilliseconds(100);
nack_module_.ClearUpTo(50);
nack_module_.Process();
EXPECT_EQ(50u, sent_nacks_.size());
EXPECT_EQ(50, sent_nacks_[0]);
}
TEST_F(TestNackModule, ClearUpToWrap) {
VCMPacket packet;
packet.seqNum = 0xfff0;
nack_module_.OnReceivedPacket(packet);
packet.seqNum = 0xf;
nack_module_.OnReceivedPacket(packet);
EXPECT_EQ(30u, sent_nacks_.size());
sent_nacks_.clear();
clock_->AdvanceTimeMilliseconds(100);
nack_module_.ClearUpTo(0);
nack_module_.Process();
EXPECT_EQ(15u, sent_nacks_.size());
EXPECT_EQ(0, sent_nacks_[0]);
}
TEST_F(TestNackModule, PacketNackCount) {
VCMPacket packet;
packet.seqNum = 0;
EXPECT_EQ(0, nack_module_.OnReceivedPacket(packet));
packet.seqNum = 2;
EXPECT_EQ(0, nack_module_.OnReceivedPacket(packet));
packet.seqNum = 1;
EXPECT_EQ(1, nack_module_.OnReceivedPacket(packet));
sent_nacks_.clear();
nack_module_.UpdateRtt(100);
packet.seqNum = 5;
EXPECT_EQ(0, nack_module_.OnReceivedPacket(packet));
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
clock_->AdvanceTimeMilliseconds(100);
nack_module_.Process();
packet.seqNum = 3;
EXPECT_EQ(3, nack_module_.OnReceivedPacket(packet));
packet.seqNum = 4;
EXPECT_EQ(3, nack_module_.OnReceivedPacket(packet));
EXPECT_EQ(0, nack_module_.OnReceivedPacket(packet));
}
} // namespace webrtc
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