mirror of
https://github.com/livekit/livekit.git
synced 2026-09-25 09:04:37 +00:00
42 lines
1.4 KiB
Go
42 lines
1.4 KiB
Go
// Copyright 2026 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package rtc
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import (
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"github.com/livekit/protocol/livekit"
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"github.com/livekit/protocol/utils"
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)
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// mergeSubscriberSettings retains an explicitly requested FEC level across
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// legacy clients' quality/mute updates, which omit the new optional field. Clone
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// both the incoming message and inherited value so cached settings are immutable.
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func mergeSubscriberSettings(previous, next *livekit.UpdateTrackSettings) *livekit.UpdateTrackSettings {
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settings := utils.CloneProto(next)
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fec := settings.Fec
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if fec == nil && previous != nil {
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fec = previous.Fec
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}
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if fec != nil {
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level := *fec
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switch level {
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case livekit.FECProtection_FEC_NONE, livekit.FECProtection_FEC_LOW, livekit.FECProtection_FEC_MEDIUM, livekit.FECProtection_FEC_HIGH:
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default:
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level = livekit.FECProtection_FEC_NONE
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}
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settings.Fec = level.Enum()
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}
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return settings
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}
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