Remove keyframe tracking from NackRequester.
Tracking keyframe packets is a useless optimization that kicked in when the nack list is full (1000 packets). Bug: none Change-Id: I134ecb4d51131718e5bb8775847fbde18f262ef9 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/334645 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Philip Eliasson <philipel@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41547}
This commit is contained in:
philipel
WebRTC LUCI CQ
parent
1fee69cfff
commit
d257cb7333
@ -141,13 +141,12 @@ void NackRequester::ProcessNacks() {
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}
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}
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int NackRequester::OnReceivedPacket(uint16_t seq_num, bool is_keyframe) {
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int NackRequester::OnReceivedPacket(uint16_t seq_num) {
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RTC_DCHECK_RUN_ON(worker_thread_);
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return OnReceivedPacket(seq_num, is_keyframe, false);
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return OnReceivedPacket(seq_num, false);
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}
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int NackRequester::OnReceivedPacket(uint16_t seq_num,
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bool is_keyframe,
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bool is_recovered) {
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RTC_DCHECK_RUN_ON(worker_thread_);
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// TODO(philipel): When the packet includes information whether it is
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@ -158,8 +157,6 @@ int NackRequester::OnReceivedPacket(uint16_t seq_num,
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if (!initialized_) {
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newest_seq_num_ = seq_num;
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if (is_keyframe)
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keyframe_list_.insert(seq_num);
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initialized_ = true;
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return 0;
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}
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@ -182,15 +179,6 @@ int NackRequester::OnReceivedPacket(uint16_t seq_num,
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return nacks_sent_for_packet;
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}
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// Keep track of new keyframes.
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if (is_keyframe)
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keyframe_list_.insert(seq_num);
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// And remove old ones so we don't accumulate keyframes.
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auto it = keyframe_list_.lower_bound(seq_num - kMaxPacketAge);
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if (it != keyframe_list_.begin())
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keyframe_list_.erase(keyframe_list_.begin(), it);
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if (is_recovered) {
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recovered_list_.insert(seq_num);
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@ -225,8 +213,6 @@ void NackRequester::ClearUpTo(uint16_t seq_num) {
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// thread.
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RTC_DCHECK_RUN_ON(worker_thread_);
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nack_list_.erase(nack_list_.begin(), nack_list_.lower_bound(seq_num));
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keyframe_list_.erase(keyframe_list_.begin(),
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keyframe_list_.lower_bound(seq_num));
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recovered_list_.erase(recovered_list_.begin(),
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recovered_list_.lower_bound(seq_num));
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}
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@ -236,25 +222,6 @@ void NackRequester::UpdateRtt(int64_t rtt_ms) {
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rtt_ = TimeDelta::Millis(rtt_ms);
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}
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bool NackRequester::RemovePacketsUntilKeyFrame() {
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// Called on worker_thread_.
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while (!keyframe_list_.empty()) {
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auto it = nack_list_.lower_bound(*keyframe_list_.begin());
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if (it != nack_list_.begin()) {
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// We have found a keyframe that actually is newer than at least one
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// packet in the nack list.
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nack_list_.erase(nack_list_.begin(), it);
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return true;
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}
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// If this keyframe is so old it does not remove any packets from the list,
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// remove it from the list of keyframes and try the next keyframe.
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keyframe_list_.erase(keyframe_list_.begin());
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}
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return false;
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}
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void NackRequester::AddPacketsToNack(uint16_t seq_num_start,
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uint16_t seq_num_end) {
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// Called on worker_thread_.
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@ -262,22 +229,13 @@ void NackRequester::AddPacketsToNack(uint16_t seq_num_start,
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auto it = nack_list_.lower_bound(seq_num_end - kMaxPacketAge);
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nack_list_.erase(nack_list_.begin(), it);
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// If the nack list is too large, remove packets from the nack list until
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// the latest first packet of a keyframe. If the list is still too large,
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// clear it and request a keyframe.
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uint16_t num_new_nacks = ForwardDiff(seq_num_start, seq_num_end);
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if (nack_list_.size() + num_new_nacks > kMaxNackPackets) {
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while (RemovePacketsUntilKeyFrame() &&
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nack_list_.size() + num_new_nacks > kMaxNackPackets) {
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}
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if (nack_list_.size() + num_new_nacks > kMaxNackPackets) {
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nack_list_.clear();
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RTC_LOG(LS_WARNING) << "NACK list full, clearing NACK"
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" list and requesting keyframe.";
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keyframe_request_sender_->RequestKeyFrame();
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return;
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}
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nack_list_.clear();
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RTC_LOG(LS_WARNING) << "NACK list full, clearing NACK"
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" list and requesting keyframe.";
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keyframe_request_sender_->RequestKeyFrame();
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return;
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}
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for (uint16_t seq_num = seq_num_start; seq_num != seq_num_end; ++seq_num) {
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@ -78,8 +78,8 @@ class NackRequester final : public NackRequesterBase {
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void ProcessNacks() override;
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int OnReceivedPacket(uint16_t seq_num, bool is_keyframe);
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int OnReceivedPacket(uint16_t seq_num, bool is_keyframe, bool is_recovered);
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int OnReceivedPacket(uint16_t seq_num);
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int OnReceivedPacket(uint16_t seq_num, bool is_recovered);
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void ClearUpTo(uint16_t seq_num);
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void UpdateRtt(int64_t rtt_ms);
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@ -108,10 +108,6 @@ class NackRequester final : public NackRequesterBase {
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void AddPacketsToNack(uint16_t seq_num_start, uint16_t seq_num_end)
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RTC_EXCLUSIVE_LOCKS_REQUIRED(worker_thread_);
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// Removes packets from the nack list until the next keyframe. Returns true
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// if packets were removed.
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bool RemovePacketsUntilKeyFrame()
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RTC_EXCLUSIVE_LOCKS_REQUIRED(worker_thread_);
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std::vector<uint16_t> GetNackBatch(NackFilterOptions options)
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RTC_EXCLUSIVE_LOCKS_REQUIRED(worker_thread_);
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@ -134,8 +130,6 @@ class NackRequester final : public NackRequesterBase {
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// synchronized access.
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std::map<uint16_t, NackInfo, DescendingSeqNumComp<uint16_t>> nack_list_
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RTC_GUARDED_BY(worker_thread_);
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std::set<uint16_t, DescendingSeqNumComp<uint16_t>> keyframe_list_
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RTC_GUARDED_BY(worker_thread_);
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std::set<uint16_t, DescendingSeqNumComp<uint16_t>> recovered_list_
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RTC_GUARDED_BY(worker_thread_);
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video_coding::Histogram reordering_histogram_ RTC_GUARDED_BY(worker_thread_);
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@ -102,90 +102,25 @@ class TestNackRequester : public ::testing::Test,
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TEST_F(TestNackRequester, NackOnePacket) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(1, false, false);
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nack_module.OnReceivedPacket(3, false, false);
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nack_module.OnReceivedPacket(1);
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nack_module.OnReceivedPacket(3);
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ASSERT_EQ(1u, sent_nacks_.size());
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EXPECT_EQ(2, sent_nacks_[0]);
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}
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TEST_F(TestNackRequester, WrappingSeqNum) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(0xfffe, false, false);
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nack_module.OnReceivedPacket(1, false, false);
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nack_module.OnReceivedPacket(0xfffe);
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nack_module.OnReceivedPacket(1);
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ASSERT_EQ(2u, sent_nacks_.size());
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EXPECT_EQ(0xffff, sent_nacks_[0]);
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EXPECT_EQ(0, sent_nacks_[1]);
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}
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TEST_F(TestNackRequester, WrappingSeqNumClearToKeyframe) {
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NackRequester& nack_module = CreateNackModule(TimeDelta::Millis(10));
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nack_module.OnReceivedPacket(0xfffe, false, false);
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nack_module.OnReceivedPacket(1, false, false);
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ASSERT_EQ(2u, sent_nacks_.size());
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EXPECT_EQ(0xffff, sent_nacks_[0]);
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EXPECT_EQ(0, sent_nacks_[1]);
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sent_nacks_.clear();
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nack_module.OnReceivedPacket(2, true, false);
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ASSERT_EQ(0u, sent_nacks_.size());
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nack_module.OnReceivedPacket(501, true, false);
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ASSERT_EQ(498u, sent_nacks_.size());
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for (int seq_num = 3; seq_num < 501; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 3]);
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sent_nacks_.clear();
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nack_module.OnReceivedPacket(1001, false, false);
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EXPECT_EQ(499u, sent_nacks_.size());
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for (int seq_num = 502; seq_num < 1001; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 502]);
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sent_nacks_.clear();
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clock_->AdvanceTimeMilliseconds(100);
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ASSERT_TRUE(WaitForSendNack());
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ASSERT_EQ(999u, sent_nacks_.size());
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EXPECT_EQ(0xffff, sent_nacks_[0]);
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EXPECT_EQ(0, sent_nacks_[1]);
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for (int seq_num = 3; seq_num < 501; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 1]);
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for (int seq_num = 502; seq_num < 1001; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 2]);
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// Adding packet 1004 will cause the nack list to reach it's max limit.
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// It will then clear all nacks up to the next keyframe (seq num 2),
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// thus removing 0xffff and 0 from the nack list.
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sent_nacks_.clear();
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nack_module.OnReceivedPacket(1004, false, false);
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ASSERT_EQ(2u, sent_nacks_.size());
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EXPECT_EQ(1002, sent_nacks_[0]);
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EXPECT_EQ(1003, sent_nacks_[1]);
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sent_nacks_.clear();
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clock_->AdvanceTimeMilliseconds(100);
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ASSERT_TRUE(WaitForSendNack());
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ASSERT_EQ(999u, sent_nacks_.size());
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for (int seq_num = 3; seq_num < 501; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 3]);
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for (int seq_num = 502; seq_num < 1001; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 4]);
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// Adding packet 1007 will cause the nack module to overflow again, thus
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// clearing everything up to 501 which is the next keyframe.
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nack_module.OnReceivedPacket(1007, false, false);
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sent_nacks_.clear();
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clock_->AdvanceTimeMilliseconds(100);
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ASSERT_TRUE(WaitForSendNack());
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ASSERT_EQ(503u, sent_nacks_.size());
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for (int seq_num = 502; seq_num < 1001; ++seq_num)
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EXPECT_EQ(seq_num, sent_nacks_[seq_num - 502]);
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EXPECT_EQ(1005, sent_nacks_[501]);
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EXPECT_EQ(1006, sent_nacks_[502]);
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}
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TEST_F(TestNackRequester, ResendNack) {
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NackRequester& nack_module = CreateNackModule(TimeDelta::Millis(1));
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nack_module.OnReceivedPacket(1, false, false);
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nack_module.OnReceivedPacket(3, false, false);
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nack_module.OnReceivedPacket(1);
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nack_module.OnReceivedPacket(3);
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size_t expected_nacks_sent = 1;
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ASSERT_EQ(expected_nacks_sent, sent_nacks_.size());
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EXPECT_EQ(2, sent_nacks_[0]);
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@ -225,8 +160,8 @@ TEST_F(TestNackRequester, ResendNack) {
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TEST_F(TestNackRequester, ResendPacketMaxRetries) {
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NackRequester& nack_module = CreateNackModule(TimeDelta::Millis(1));
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nack_module.OnReceivedPacket(1, false, false);
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nack_module.OnReceivedPacket(3, false, false);
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nack_module.OnReceivedPacket(1);
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nack_module.OnReceivedPacket(3);
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ASSERT_EQ(1u, sent_nacks_.size());
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EXPECT_EQ(2, sent_nacks_[0]);
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@ -246,37 +181,22 @@ TEST_F(TestNackRequester, ResendPacketMaxRetries) {
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TEST_F(TestNackRequester, TooLargeNackList) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(0, false, false);
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nack_module.OnReceivedPacket(1001, false, false);
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nack_module.OnReceivedPacket(0);
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nack_module.OnReceivedPacket(1001);
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EXPECT_EQ(1000u, sent_nacks_.size());
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EXPECT_EQ(0, keyframes_requested_);
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nack_module.OnReceivedPacket(1003, false, false);
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nack_module.OnReceivedPacket(1003);
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EXPECT_EQ(1000u, sent_nacks_.size());
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EXPECT_EQ(1, keyframes_requested_);
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nack_module.OnReceivedPacket(1004, false, false);
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EXPECT_EQ(1000u, sent_nacks_.size());
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EXPECT_EQ(1, keyframes_requested_);
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}
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TEST_F(TestNackRequester, TooLargeNackListWithKeyFrame) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(0, false, false);
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nack_module.OnReceivedPacket(1, true, false);
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nack_module.OnReceivedPacket(1001, false, false);
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EXPECT_EQ(999u, sent_nacks_.size());
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EXPECT_EQ(0, keyframes_requested_);
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nack_module.OnReceivedPacket(1003, false, false);
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EXPECT_EQ(1000u, sent_nacks_.size());
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EXPECT_EQ(0, keyframes_requested_);
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nack_module.OnReceivedPacket(1005, false, false);
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nack_module.OnReceivedPacket(1004);
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EXPECT_EQ(1000u, sent_nacks_.size());
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EXPECT_EQ(1, keyframes_requested_);
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}
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TEST_F(TestNackRequester, ClearUpTo) {
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NackRequester& nack_module = CreateNackModule(TimeDelta::Millis(1));
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nack_module.OnReceivedPacket(0, false, false);
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nack_module.OnReceivedPacket(100, false, false);
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nack_module.OnReceivedPacket(0);
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nack_module.OnReceivedPacket(100);
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EXPECT_EQ(99u, sent_nacks_.size());
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sent_nacks_.clear();
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@ -289,8 +209,8 @@ TEST_F(TestNackRequester, ClearUpTo) {
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TEST_F(TestNackRequester, ClearUpToWrap) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(0xfff0, false, false);
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nack_module.OnReceivedPacket(0xf, false, false);
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nack_module.OnReceivedPacket(0xfff0);
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nack_module.OnReceivedPacket(0xf);
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EXPECT_EQ(30u, sent_nacks_.size());
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sent_nacks_.clear();
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@ -303,13 +223,13 @@ TEST_F(TestNackRequester, ClearUpToWrap) {
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TEST_F(TestNackRequester, PacketNackCount) {
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NackRequester& nack_module = CreateNackModule(TimeDelta::Millis(1));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(0, false, false));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(2, false, false));
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EXPECT_EQ(1, nack_module.OnReceivedPacket(1, false, false));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(0));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(2));
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EXPECT_EQ(1, nack_module.OnReceivedPacket(1));
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sent_nacks_.clear();
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nack_module.UpdateRtt(100);
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EXPECT_EQ(0, nack_module.OnReceivedPacket(5, false, false));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(5));
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clock_->AdvanceTimeMilliseconds(100);
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WaitForSendNack();
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EXPECT_EQ(4u, sent_nacks_.size());
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@ -319,40 +239,24 @@ TEST_F(TestNackRequester, PacketNackCount) {
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EXPECT_EQ(6u, sent_nacks_.size());
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EXPECT_EQ(3, nack_module.OnReceivedPacket(3, false, false));
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EXPECT_EQ(3, nack_module.OnReceivedPacket(4, false, false));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(4, false, false));
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}
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TEST_F(TestNackRequester, NackListFullAndNoOverlapWithKeyframes) {
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NackRequester& nack_module = CreateNackModule();
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const int kMaxNackPackets = 1000;
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const unsigned int kFirstGap = kMaxNackPackets - 20;
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const unsigned int kSecondGap = 200;
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uint16_t seq_num = 0;
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nack_module.OnReceivedPacket(seq_num++, true, false);
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seq_num += kFirstGap;
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nack_module.OnReceivedPacket(seq_num++, true, false);
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EXPECT_EQ(kFirstGap, sent_nacks_.size());
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sent_nacks_.clear();
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seq_num += kSecondGap;
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nack_module.OnReceivedPacket(seq_num, true, false);
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EXPECT_EQ(kSecondGap, sent_nacks_.size());
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EXPECT_EQ(3, nack_module.OnReceivedPacket(3));
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EXPECT_EQ(3, nack_module.OnReceivedPacket(4));
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EXPECT_EQ(0, nack_module.OnReceivedPacket(4));
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}
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TEST_F(TestNackRequester, HandleFecRecoveredPacket) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(1, false, false);
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nack_module.OnReceivedPacket(4, false, true);
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nack_module.OnReceivedPacket(1);
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nack_module.OnReceivedPacket(4, /*is_recovered=*/true);
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EXPECT_EQ(0u, sent_nacks_.size());
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nack_module.OnReceivedPacket(5, false, false);
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nack_module.OnReceivedPacket(5);
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EXPECT_EQ(2u, sent_nacks_.size());
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}
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TEST_F(TestNackRequester, SendNackWithoutDelay) {
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NackRequester& nack_module = CreateNackModule();
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nack_module.OnReceivedPacket(0, false, false);
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nack_module.OnReceivedPacket(100, false, false);
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nack_module.OnReceivedPacket(0);
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nack_module.OnReceivedPacket(100);
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EXPECT_EQ(99u, sent_nacks_.size());
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}
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@ -389,14 +293,14 @@ class TestNackRequesterWithFieldTrial : public ::testing::Test,
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};
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TEST_F(TestNackRequesterWithFieldTrial, SendNackWithDelay) {
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nack_module_.OnReceivedPacket(0, false, false);
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nack_module_.OnReceivedPacket(100, false, false);
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nack_module_.OnReceivedPacket(0);
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nack_module_.OnReceivedPacket(100);
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EXPECT_EQ(0u, sent_nacks_.size());
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||||
clock_->AdvanceTimeMilliseconds(10);
|
||||
nack_module_.OnReceivedPacket(106, false, false);
|
||||
nack_module_.OnReceivedPacket(106);
|
||||
EXPECT_EQ(99u, sent_nacks_.size());
|
||||
clock_->AdvanceTimeMilliseconds(10);
|
||||
nack_module_.OnReceivedPacket(109, false, false);
|
||||
nack_module_.OnReceivedPacket(109);
|
||||
EXPECT_EQ(104u, sent_nacks_.size());
|
||||
}
|
||||
} // namespace webrtc
|
||||
|
||||
@ -654,12 +654,8 @@ void RtpVideoStreamReceiver2::OnReceivedPayloadData(
|
||||
}
|
||||
|
||||
if (nack_module_) {
|
||||
const bool is_keyframe =
|
||||
video_header.is_first_packet_in_frame &&
|
||||
video_header.frame_type == VideoFrameType::kVideoFrameKey;
|
||||
|
||||
packet->times_nacked = nack_module_->OnReceivedPacket(
|
||||
rtp_packet.SequenceNumber(), is_keyframe, rtp_packet.recovered());
|
||||
rtp_packet.SequenceNumber(), rtp_packet.recovered());
|
||||
} else {
|
||||
packet->times_nacked = -1;
|
||||
}
|
||||
@ -1129,8 +1125,7 @@ void RtpVideoStreamReceiver2::NotifyReceiverOfEmptyPacket(uint16_t seq_num) {
|
||||
|
||||
OnInsertedPacket(packet_buffer_.InsertPadding(seq_num));
|
||||
if (nack_module_) {
|
||||
nack_module_->OnReceivedPacket(seq_num, /* is_keyframe = */ false,
|
||||
/* is _recovered = */ false);
|
||||
nack_module_->OnReceivedPacket(seq_num, /*is_recovered=*/false);
|
||||
}
|
||||
if (loss_notification_controller_) {
|
||||
// TODO(bugs.webrtc.org/10336): Handle empty packets.
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user