Refactor FEC code to use COW buffers

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

This CL replaces
|uint8 data[IP_PACKET_SIZE]| with |rtc::CopyOnWriteBuffer data| in Packet class,
removes |length| field there, and does necessary changes.

This is a reland of these two CLs with fixes:
https://webrtc-review.googlesource.com/c/src/+/144942
https://webrtc-review.googlesource.com/c/src/+/144881

Bug: webrtc:10750
Change-Id: I76f6dee5a57ade59942ea2822ca4737edfe6438b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/145332
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29035}
This commit is contained in:
Ilya Nikolaevskiy
2019-09-02 13:58:49 +02:00
committed by Commit Bot
parent a66395e72f
commit eec5fff4df
25 changed files with 357 additions and 328 deletions

View File

@ -126,16 +126,16 @@ void UlpfecReceiverTest::BuildAndAddRedMediaPacket(AugmentedPacket* packet) {
std::unique_ptr<AugmentedPacket> red_packet(
packet_generator_.BuildMediaRedPacket(*packet));
EXPECT_EQ(0, receiver_fec_->AddReceivedRedPacket(
red_packet->header, red_packet->data, red_packet->length,
kFecPayloadType));
red_packet->header, red_packet->data.cdata(),
red_packet->data.size(), kFecPayloadType));
}
void UlpfecReceiverTest::BuildAndAddRedFecPacket(Packet* packet) {
std::unique_ptr<AugmentedPacket> red_packet(
packet_generator_.BuildUlpfecRedPacket(*packet));
EXPECT_EQ(0, receiver_fec_->AddReceivedRedPacket(
red_packet->header, red_packet->data, red_packet->length,
kFecPayloadType));
red_packet->header, red_packet->data.cdata(),
red_packet->data.size(), kFecPayloadType));
}
void UlpfecReceiverTest::VerifyReconstructedMediaPacket(
@ -144,8 +144,10 @@ void UlpfecReceiverTest::VerifyReconstructedMediaPacket(
// Verify that the content of the reconstructed packet is equal to the
// content of |packet|, and that the same content is received |times| number
// of times in a row.
EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, packet.length))
.With(Args<0, 1>(ElementsAreArray(packet.data, packet.length)))
EXPECT_CALL(recovered_packet_receiver_,
OnRecoveredPacket(_, packet.data.size()))
.With(
Args<0, 1>(ElementsAreArray(packet.data.cdata(), packet.data.size())))
.Times(times);
}