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Refactor FEC code to use COW buffers

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This refactoring helps to reduce unnecessary memcpy calls on the receive
side.

This CL is the first stage of refactoring: it only replaces
|uint8 data[IP_PACKET_SIZE]| with |rtc::CopyOnWriteBuffer data| and does
necessary changes.

A follow-up CL will remove length field of the Packet class.


Bug: webrtc:10750
Change-Id: Ie233da83ff33f6370f511955e4c65d59522389a7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144881
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28539}
This commit is contained in:
Ilya Nikolaevskiy
2019-07-10 11:28:04 +02:00
committed by Commit Bot
parent 1300ce12e8
commit 7325bc3917
24 changed files with 199 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
modules/rtp_rtcp/source/rtp_fec_unittest.cc
View File

@ -121,7 +121,7 @@ void RtpFecTest<ForwardErrorCorrectionType>::ReceivedPackets(
new ForwardErrorCorrection::ReceivedPacket());
received_packet->pkt = new ForwardErrorCorrection::Packet();
received_packet->pkt->length = packet->length;
memcpy(received_packet->pkt->data, packet->data, packet->length);
received_packet->pkt->data = packet->data;
received_packet->is_fec = is_fec;
if (!is_fec) {
received_packet->ssrc = kMediaSsrc;
@ -158,7 +158,8 @@ bool RtpFecTest<ForwardErrorCorrectionType>::IsRecoveryComplete() {
if (media_packet->length != recovered_packet->pkt->length) {
return false;
}
if (memcmp(media_packet->data, recovered_packet->pkt->data,
if (memcmp(media_packet->data.cdata(),
recovered_packet->pkt->data.cdata(),
media_packet->length) != 0) {
return false;
}