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Reland "Ensure RTCRtpSenders are always created with one encoding"

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This is a reland of commit b8023690d9

Original change's description:
> Ensure RTCRtpSenders are always created with one encoding
>
> It is possible to have AddTransceiver calls with an empty array
> of encodings or AddTrack calls. In both cases, before negotiation,
> the sender's encodings array would be empty and it was not possible
> to update any value.
>
> Now, a default entry should be created in those cases, allowing to
> update the configuration before negotiation.
>
> Bug: webrtc:10567
> Change-Id: I1271e2965e1a97c1e472451e0ab8867fc24f6c2b
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/290994
> Auto-Submit: Florent Castelli <orphis@webrtc.org>
> Reviewed-by: Henrik Boström <hbos@webrtc.org>
> Commit-Queue: Florent Castelli <orphis@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#39126}

Bug: webrtc:10567
Change-Id: I558a95f7b587302b5e95f6ec26d1eb1fedf3dbed
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291240
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39150}
This commit is contained in:
Florent Castelli 2023-01-17 18:08:26 +01:00 committed by WebRTC LUCI CQ
parent 828de8036d
commit bd1e5d5aa5
3 changed files with 47 additions and 10 deletions
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5
pc/peer_connection.cc
View file

@ -1096,6 +1096,11 @@ PeerConnection::AddTransceiver(
}
}
// If no encoding parameters were provided, a default entry is created.
if (parameters.encodings.empty()) {
parameters.encodings.push_back({});
}
if (UnimplementedRtpParameterHasValue(parameters)) {
LOG_AND_RETURN_ERROR(
RTCErrorType::UNSUPPORTED_PARAMETER,

30
pc/peer_connection_integrationtest.cc
View file

@ -2834,6 +2834,14 @@ TEST_P(PeerConnectionIntegrationTest, UnsignaledSsrcGetParametersVideo) {
EXPECT_TRUE(parameters.encodings[0].ssrc.has_value());
}
TEST_P(PeerConnectionIntegrationTest,
GetParametersHasEncodingsBeforeNegotiation) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
auto sender = caller()->AddTrack(caller()->CreateLocalVideoTrack());
auto parameters = sender->GetParameters();
EXPECT_EQ(parameters.encodings.size(), 1u);
}
// Test that if a track is removed and added again with a different stream ID,
// the new stream ID is successfully communicated in SDP and media continues to
// flow end-to-end.
@ -3410,6 +3418,28 @@ TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
}
}
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
GetParametersHasEncodingsBeforeNegotiation) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
auto result = caller()->pc()->AddTransceiver(cricket::MEDIA_TYPE_VIDEO);
auto transceiver = result.MoveValue();
auto parameters = transceiver->sender()->GetParameters();
EXPECT_EQ(parameters.encodings.size(), 1u);
}
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
GetParametersHasInitEncodingsBeforeNegotiation) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
RtpTransceiverInit init;
init.send_encodings.push_back({});
init.send_encodings[0].max_bitrate_bps = 12345;
auto result = caller()->pc()->AddTransceiver(cricket::MEDIA_TYPE_VIDEO, init);
auto transceiver = result.MoveValue();
auto parameters = transceiver->sender()->GetParameters();
ASSERT_EQ(parameters.encodings.size(), 1u);
EXPECT_EQ(parameters.encodings[0].max_bitrate_bps, 12345);
}
INSTANTIATE_TEST_SUITE_P(
PeerConnectionIntegrationTest,
PeerConnectionIntegrationTest,

22
pc/rtp_transmission_manager.cc
View file

@ -150,10 +150,11 @@ RtpTransmissionManager::AddTrackPlanB(
(track->kind() == MediaStreamTrackInterface::kAudioKind
? cricket::MEDIA_TYPE_AUDIO
: cricket::MEDIA_TYPE_VIDEO);
auto new_sender =
CreateSender(media_type, track->id(), track, adjusted_stream_ids,
init_send_encodings ? *init_send_encodings
: std::vector<RtpEncodingParameters>());
auto new_sender = CreateSender(
media_type, track->id(), track, adjusted_stream_ids,
init_send_encodings
? *init_send_encodings
: std::vector<RtpEncodingParameters>(1, RtpEncodingParameters{}));
if (track->kind() == MediaStreamTrackInterface::kAudioKind) {
new_sender->internal()->SetMediaChannel(voice_media_send_channel());
GetAudioTransceiver()->internal()->AddSender(new_sender);
@ -217,10 +218,11 @@ RtpTransmissionManager::AddTrackUnifiedPlan(
if (FindSenderById(sender_id)) {
sender_id = rtc::CreateRandomUuid();
}
auto sender = CreateSender(media_type, sender_id, track, stream_ids,
init_send_encodings
? *init_send_encodings
: std::vector<RtpEncodingParameters>());
auto sender = CreateSender(
media_type, sender_id, track, stream_ids,
init_send_encodings
? *init_send_encodings
: std::vector<RtpEncodingParameters>(1, RtpEncodingParameters{}));
auto receiver = CreateReceiver(media_type, rtc::CreateRandomUuid());
transceiver = CreateAndAddTransceiver(sender, receiver);
transceiver->internal()->set_created_by_addtrack(true);
@ -411,7 +413,7 @@ void RtpTransmissionManager::AddAudioTrack(AudioTrackInterface* track,
// Normal case; we've never seen this track before.
auto new_sender = CreateSender(cricket::MEDIA_TYPE_AUDIO, track->id(),
rtc::scoped_refptr<AudioTrackInterface>(track),
{stream->id()}, {});
{stream->id()}, {{}});
new_sender->internal()->SetMediaChannel(voice_media_send_channel());
GetAudioTransceiver()->internal()->AddSender(new_sender);
// If the sender has already been configured in SDP, we call SetSsrc,
@ -458,7 +460,7 @@ void RtpTransmissionManager::AddVideoTrack(VideoTrackInterface* track,
// Normal case; we've never seen this track before.
auto new_sender = CreateSender(cricket::MEDIA_TYPE_VIDEO, track->id(),
rtc::scoped_refptr<VideoTrackInterface>(track),
{stream->id()}, {});
{stream->id()}, {{}});
new_sender->internal()->SetMediaChannel(video_media_send_channel());
GetVideoTransceiver()->internal()->AddSender(new_sender);
const RtpSenderInfo* sender_info =