86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// Copyright 2023 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 streamallocator
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import (
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"fmt"
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"github.com/livekit/protocol/livekit"
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)
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// ------------------------------------------------
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type StreamState int
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const (
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StreamStateInactive StreamState = iota
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StreamStateActive
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StreamStatePaused
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)
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func (s StreamState) String() string {
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switch s {
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case StreamStateInactive:
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return "INACTIVE"
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case StreamStateActive:
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return "ACTIVE"
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case StreamStatePaused:
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return "PAUSED"
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default:
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return fmt.Sprintf("UNKNOWN: %d", int(s))
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}
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}
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// ------------------------------------------------
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type StreamStateInfo struct {
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ParticipantID livekit.ParticipantID
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TrackID livekit.TrackID
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State StreamState
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}
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type StreamStateUpdate struct {
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StreamStates []*StreamStateInfo
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}
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func NewStreamStateUpdate() *StreamStateUpdate {
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return &StreamStateUpdate{}
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}
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func (s *StreamStateUpdate) HandleStreamingChange(track *Track, streamState StreamState) {
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switch streamState {
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case StreamStateInactive:
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// inactive is not a notification, could get into this state because of mute
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case StreamStateActive:
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s.StreamStates = append(s.StreamStates, &StreamStateInfo{
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ParticipantID: track.PublisherID(),
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TrackID: track.ID(),
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State: StreamStateActive,
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})
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case StreamStatePaused:
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s.StreamStates = append(s.StreamStates, &StreamStateInfo{
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ParticipantID: track.PublisherID(),
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TrackID: track.ID(),
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State: StreamStatePaused,
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})
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}
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}
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func (s *StreamStateUpdate) Empty() bool {
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return len(s.StreamStates) == 0
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}
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// ------------------------------------------------
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