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Revert "Reland "Send first probe packet directly instead of enqueuing it.""

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This reverts commit fc5871cb98481937351bee2f46b2a2e3987d177a.

Reason for revert: I rage quit.

Original change's description:
> Reland "Send first probe packet directly instead of enqueuing it."
>
> This is a reland of commit 8088aad5ac0154d8fdc252de9e8ab4e0172d7da2
>
> Patchset 1 is original CL, patchset 2 contains a fix to make behavior
> exactly identical to original. It fixes a difference when the first
> small probe packet comprises the entire probe.
>
> Original change's description:
> > Send first probe packet directly instead of enqueuing it.
> >
> > This avoids potentially creating needless containers in the packet
> > queue and removes usage of the packet prio, allowing it to be moved in
> > an upcoming CL.
> >
> > Bug: webrtc:11340
> > Change-Id: Iddd9e7e4e73c97ab25a85e42bcc0094d61fd60d3
> > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/259524
> > Reviewed-by: Emil Lundmark <lndmrk@webrtc.org>
> > Commit-Queue: Erik Språng <sprang@webrtc.org>
> > Cr-Commit-Position: refs/heads/main@{#36602}
>
> Bug: webrtc:11340
> Change-Id: I7d2f476a7043edd03f44a4a3de31f13c3c946a8d
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/259776
> Reviewed-by: Emil Lundmark <lndmrk@webrtc.org>
> Commit-Queue: Erik Språng <sprang@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#36626}

Bug: webrtc:11340
Change-Id: Ife22cff8f5fbf9b70dc24926b84caad82d2738b8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/259778
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36628}
This commit is contained in:
Erik Språng
2022-04-22 15:59:06 +00:00
committed by WebRTC LUCI CQ
parent 6bb1fd358b
commit acded16424
2 changed files with 24 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
modules/pacing/pacing_controller.cc
View File

@ -463,7 +463,6 @@ void PacingController::ProcessPackets() {
PacedPacketInfo pacing_info;
DataSize recommended_probe_size = DataSize::Zero();
DataSize data_sent = DataSize::Zero();
bool is_probing = prober_.is_probing();
if (is_probing) {
// Probe timing is sensitive, and handled explicitly by BitrateProber, so
@ -480,21 +479,11 @@ void PacingController::ProcessPackets() {
// If no RTP modules sending media are registered, we may not get a
// padding packet back.
if (!padding.empty()) {
// Insert with high priority so larger media packets don't preempt it.
EnqueuePacketInternal(std::move(padding[0]), kFirstPriority);
// We should never get more than one padding packets with a requested
// size of 1 byte.
RTC_DCHECK_EQ(padding.size(), 1u);
// Send packet immediately to avoid priority inversions.
data_sent += SendPacket(std::move(padding[0]), pacing_info, now);
// If we are currently probing, we need to stop the send sending when
// we have reached the send target.
if (is_probing && data_sent >= recommended_probe_size) {
RTC_DCHECK(!data_sent.IsZero());
probing_send_failure_ = false;
prober_.ProbeSent(CurrentTime(), data_sent);
return;
}
}
}
} else {
@ -503,6 +492,7 @@ void PacingController::ProcessPackets() {
}
}
DataSize data_sent = DataSize::Zero();
// Circuit breaker, making sure main loop isn't forever.
static constexpr int kMaxIterations = 1 << 16;
int iteration = 0;
@ -535,11 +525,29 @@ void PacingController::ProcessPackets() {
// Can't fetch new packet and no padding to send, exit send loop.
break;
} else {
data_sent += SendPacket(std::move(rtp_packet), pacing_info, now);
RTC_DCHECK(rtp_packet);
RTC_DCHECK(rtp_packet->packet_type().has_value());
const RtpPacketMediaType packet_type = *rtp_packet->packet_type();
DataSize packet_size = DataSize::Bytes(rtp_packet->payload_size() +
rtp_packet->padding_size());
if (include_overhead_) {
packet_size += DataSize::Bytes(rtp_packet->headers_size()) +
transport_overhead_per_packet_;
}
packet_sender_->SendPacket(std::move(rtp_packet), pacing_info);
for (auto& packet : packet_sender_->FetchFec()) {
EnqueuePacket(std::move(packet));
}
data_sent += packet_size;
++packets_sent;
// If we are currently probing, we need to stop the send loop when we have
// reached the send target.
// Send done, update send time.
OnPacketSent(packet_type, packet_size, now);
// If we are currently probing, we need to stop the send loop when we
// have reached the send target.
if (is_probing && data_sent >= recommended_probe_size) {
break;
}
@ -657,31 +665,6 @@ std::unique_ptr<RtpPacketToSend> PacingController::GetPendingPacket(
return packet_queue_.Pop();
}
DataSize PacingController::SendPacket(std::unique_ptr<RtpPacketToSend> packet,
const PacedPacketInfo& pacing_info,
Timestamp now) {
RTC_DCHECK(packet);
RTC_DCHECK(packet->packet_type().has_value());
const RtpPacketMediaType packet_type = *packet->packet_type();
DataSize packet_size =
DataSize::Bytes(packet->payload_size() + packet->padding_size());
if (include_overhead_) {
packet_size += DataSize::Bytes(packet->headers_size()) +
transport_overhead_per_packet_;
}
packet_sender_->SendPacket(std::move(packet), pacing_info);
for (std::unique_ptr<RtpPacketToSend>& packet : packet_sender_->FetchFec()) {
EnqueuePacket(std::move(packet));
}
// Sending complete, update send time.
OnPacketSent(packet_type, packet_size, now);
return packet_size;
}
void PacingController::OnPacketSent(RtpPacketMediaType packet_type,
DataSize packet_size,
Timestamp send_time) {