82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
// Copyright 2024 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 sfu
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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pd "github.com/livekit/livekit-server/pkg/sfu/rtpextension/playoutdelay"
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"github.com/livekit/livekit-server/pkg/sfu/rtpstats"
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"github.com/livekit/protocol/logger"
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)
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func TestPlayoutDelay(t *testing.T) {
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stats := rtpstats.NewRTPStatsSender(rtpstats.RTPStatsParams{}, 128)
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stats.SetClockRate(90000)
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c, err := NewPlayoutDelayController(100, 120, logger.GetLogger(), stats)
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require.NoError(t, err)
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ext := c.GetDelayExtension(100)
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playoutDelayEqual(t, ext, 100, 120)
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ext = c.GetDelayExtension(105)
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playoutDelayEqual(t, ext, 100, 120)
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// seq acked before delay changed
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c.OnSeqAcked(65534)
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ext = c.GetDelayExtension(105)
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playoutDelayEqual(t, ext, 100, 120)
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c.OnSeqAcked(90)
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ext = c.GetDelayExtension(105)
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playoutDelayEqual(t, ext, 100, 120)
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// seq acked, no extension sent for new packet
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c.OnSeqAcked(103)
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ext = c.GetDelayExtension(106)
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require.Nil(t, ext)
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// delay on change(can't go below min), no extension sent
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c.SetJitter(0)
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ext = c.GetDelayExtension(107)
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require.Nil(t, ext)
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// delay changed, generate new extension to send
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time.Sleep(200 * time.Millisecond)
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c.SetJitter(50)
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t.Log(c.currentDelay, c.state.Load())
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ext = c.GetDelayExtension(108)
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var delay pd.PlayOutDelay
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require.NoError(t, delay.Unmarshal(ext))
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require.Greater(t, delay.Min, uint16(100))
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// can't go above max
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time.Sleep(200 * time.Millisecond)
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c.SetJitter(10000)
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ext = c.GetDelayExtension(109)
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playoutDelayEqual(t, ext, 120, 120)
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}
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func playoutDelayEqual(t *testing.T, data []byte, min, max uint16) {
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var delay pd.PlayOutDelay
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require.NoError(t, delay.Unmarshal(data))
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require.Equal(t, min, delay.Min)
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require.Equal(t, max, delay.Max)
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}
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