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RtpTransceiverInterface: introduce HeaderExtensionsNegotiated.

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This changes adds exposure of a new transceiver method for
accessing header extensions that have been negotiated, following
spec details in https://w3c.github.io/webrtc-extensions/#rtcrtptransceiver-interface.

The change contains unit tests testing the functionality.

Note: support for signalling directionality of header extensions
in the SDP isn't implemented yet.

https://chromestatus.com/feature/5680189201711104.
Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/65YdUi02yZk

Bug: chromium:1051821
Change-Id: If963beed37e96eed2dff3a2822db4e30caaea4a0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/198126
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Markus Handell <handellm@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32860}
This commit is contained in:
Markus Handell
2020-12-17 22:19:40 +01:00
committed by Commit Bot
parent d95a47d08f
commit 5932fe1392
10 changed files with 164 additions and 4 deletions
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13
pc/rtp_transceiver.cc
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@ -12,12 +12,14 @@
#include <string>
#include <utility>
#include <vector>
#include "absl/algorithm/container.h"
#include "api/rtp_parameters.h"
#include "pc/channel_manager.h"
#include "pc/rtp_media_utils.h"
#include "pc/rtp_parameters_conversion.h"
#include "pc/session_description.h"
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
@ -455,6 +457,17 @@ RtpTransceiver::HeaderExtensionsToOffer() const {
return header_extensions_to_offer_;
}
std::vector<RtpHeaderExtensionCapability>
RtpTransceiver::HeaderExtensionsNegotiated() const {
if (!channel_)
return {};
std::vector<RtpHeaderExtensionCapability> result;
for (const auto& ext : channel_->GetNegotiatedRtpHeaderExtensions()) {
result.emplace_back(ext.uri, ext.id, RtpTransceiverDirection::kSendRecv);
}
return result;
}
RTCError RtpTransceiver::SetOfferedRtpHeaderExtensions(
rtc::ArrayView<const RtpHeaderExtensionCapability>
header_extensions_to_offer) {