Introduce support for video packet batching.
This CL introduces a new feature enabling video packet send batches.
The feature is enabled via
PeerConnectionInterface
::RTCConfiguration
::MediaConfig
::enable_send_packet_batching.
PacketOptions have been augmented with attribute "batchable" (set for
all video packets) and attribute "last_packet_in_batch" which gives
injected AsyncPacketSockets a chance to understand when a batch begins
and ends.
When the feature is on, packets are collected in RtpSenderEgress. On
reception of OnBatchComplete from PacingController, RtpSenderEgress
sends the collected batch, setting "last_packet_in_batch" to true
in the last packet.
Bug: chromium:1439830
Change-Id: I1846b9d4a8a0efd227d617691213a2e048bdc8a2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/303720
Commit-Queue: Markus Handell <handellm@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40012}
diff --git a/rtc_base/async_packet_socket.h b/rtc_base/async_packet_socket.h
index 90f2a13..ad9a79e 100644
--- a/rtc_base/async_packet_socket.h
+++ b/rtc_base/async_packet_socket.h
@@ -54,6 +54,12 @@
PacketTimeUpdateParams packet_time_params;
// PacketInfo is passed to SentPacket when signaling this packet is sent.
PacketInfo info_signaled_after_sent;
+ // True if this is a batchable packet. Batchable packets are collected at low
+ // levels and sent first when their AsyncPacketSocket receives a
+ // OnSendBatchComplete call.
+ bool batchable = false;
+ // True if this is the last packet of a batch.
+ bool last_packet_in_batch = false;
};
// Provides the ability to receive packets asynchronously. Sends are not
