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Create av1_sample_buffer_support.go #238

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Create av1_sample_buffer_support.go #238

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2655dbb
Create av1_sample_buffer_support.go
alexpokotilo Sep 20, 2023
1d208b7
Update av1_sample_buffer_support.go
alexpokotilo Sep 26, 2023
6b5620c
Fix inspection issues
alexpokotilo Sep 26, 2023
b3d6ebe
Create av1_sample_buffer_support_test.go
alexpokotilo Sep 26, 2023
75ee6c6
Moved files into codecs/av1/frame
Sep 26, 2023
59359f2
Merge branch 'master' into av1-sample-buffer-support
alexpokotilo Apr 15, 2024
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97 changes: 97 additions & 0 deletions codecs/av1/frame/av1_sample_buffer_support.go
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@@ -0,0 +1,97 @@
package frame

import (
"github.com/pion/rtp/codecs"
"github.com/pion/rtp/codecs/av1/obu"
)

type AV1PacketSampleBufferSupport struct {

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exported: exported type AV1PacketSampleBufferSupport should have comment or be unexported (revive)
popFrame bool
avFrame *AV1
}

func (d *AV1PacketSampleBufferSupport) IsPartitionTail(marker bool, _ []byte) bool {

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exported: exported method AV1PacketSampleBufferSupport.IsPartitionTail should have comment or be unexported (revive)
d.popFrame = true
return marker
}

// IsPartitionHead checks whether if this is a head of the AV1 partition
func (d *AV1PacketSampleBufferSupport) IsPartitionHead(payload []byte) bool {
d.popFrame = true
if len(payload) == 0 {
return false

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}
return (payload[0] & byte(0b10000000)) == 0
}

func (d *AV1PacketSampleBufferSupport) Unmarshal(payload []byte) ([]byte, error) {

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exported: exported method AV1PacketSampleBufferSupport.Unmarshal should have comment or be unexported (revive)

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if d.popFrame {
d.avFrame = &AV1{}
d.popFrame = false // start frame assembling
}

packet := codecs.AV1Packet{}
_, err := packet.Unmarshal(payload)

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if err != nil {
return nil, err

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}

OBUs, _ := d.avFrame.ReadFrames(&packet)

if len(OBUs) == 0 {
return nil, nil

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}

var payloadSize uint = 0

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for i := range OBUs {
obuLength := uint(len(OBUs[i]))
if obuLength == 0 {
continue
}
payloadSize += obuLength
payloadSize += obu.SizeLeb128(obu.EncodeLEB128(obuLength - 1))
}

result := make([]byte, payloadSize)

offset := 0
for i := range OBUs {
obuLength := len(OBUs[i])

if obuLength == 0 {
continue
}

lenMinus := obuLength - 1

result[offset] = OBUs[i][0] ^ 2 // mark size header exists
offset++
payloadSize := obu.EncodeLEB128(uint(lenMinus))

switch obu.SizeLeb128(payloadSize) {
case 4:
result[offset] = byte(payloadSize >> 24)
offset++
fallthrough

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case 3:
result[offset] = byte(payloadSize >> 16)
offset++
fallthrough
case 2:
result[offset] = byte(payloadSize >> 8)
offset++
fallthrough
case 1:
result[offset] = byte(payloadSize)
offset++
}

copy(result[offset:], OBUs[i][1:])
offset += lenMinus
}

return result, nil
}
149 changes: 149 additions & 0 deletions codecs/av1/frame/av1_sample_buffer_support_test.go
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package frame

import (
"bytes"

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"github.com/pion/rtp"
"github.com/pion/rtp/codecs/av1/obu"
"github.com/pion/webrtc/v3/pkg/media/samplebuilder"
"testing"

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"time"
)

func buildAv1Payload(data byte, padding int) []byte {
dataSize := 0

if data > 0 {
dataSize = 1
}

payloadSize := obu.EncodeLEB128(uint(1 + padding + dataSize))
result := make([]byte, 3+obu.SizeLeb128(payloadSize))

result[0] = 0 // AV1 RTP header

offset := 1

switch obu.SizeLeb128(payloadSize) {
case 4:
result[offset] = byte(payloadSize >> 24)
offset++
fallthrough
case 3:
result[offset] = byte(payloadSize >> 16)
offset++
fallthrough
case 2:
result[offset] = byte(payloadSize >> 8)
offset++
fallthrough
case 1:
result[offset] = byte(payloadSize)
offset++
}

result[offset] = 0 // OBU HEADER

if dataSize > 0 {
offset++
result[offset] = data
}
return append(result, make([]byte, padding)...)
}

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func buildAv1Packages(seqNo *uint16, timestamp *uint32, padding int) []*rtp.Packet {
s := *seqNo
t := *timestamp

*timestamp += 1800
*seqNo += 5

return []*rtp.Packet{
{Header: rtp.Header{SequenceNumber: s, Timestamp: t}, Payload: buildAv1Payload(1, 0)},
{Header: rtp.Header{SequenceNumber: s + 1, Timestamp: t}, Payload: buildAv1Payload(2, 0)},
{Header: rtp.Header{SequenceNumber: s + 2, Timestamp: t}, Payload: buildAv1Payload(3, 0)},
{Header: rtp.Header{SequenceNumber: s + 3, Timestamp: t}, Payload: buildAv1Payload(4, 0)},
{Header: rtp.Header{SequenceNumber: s + 4, Timestamp: t, Marker: true}, Payload: buildAv1Payload(5, padding)},
}
}
func TestAV1SampleBufferSupport(t *testing.T) {

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assembledAv1Frame := []byte{2, 1, 1, 2, 1, 2, 2, 1, 3, 2, 1, 4, 2, 1, 5}
t.Run("AV1 Sample Buffer returning OBU stream", func(t *testing.T) {
videoStreamBuilder := samplebuilder.New(100, &AV1PacketSampleBufferSupport{}, 90000,
samplebuilder.WithMaxTimeDelay(time.Millisecond*100))
var seqNo uint16 = 0

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var-declaration: should drop = 0 from declaration of var seqNo; it is the zero value (revive)
var timestamp uint32 = 0

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for i := 0; i < 4; i++ {
for _, pkt := range buildAv1Packages(&seqNo, &timestamp, 0) {
sample := videoStreamBuilder.Pop()
if nil != sample {
if !bytes.Equal(sample.Data, assembledAv1Frame) {
t.Fatal("issue in unmarshalling")
}
}
videoStreamBuilder.Push(pkt)
}
}

for i := 1; i < 16400; i++ { // check OBU len up to 3 bytes
for _, pkt := range buildAv1Packages(&seqNo, &timestamp, i) {
sample := videoStreamBuilder.Pop()
if nil != sample {

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if !bytes.Equal(sample.Data[0:12], assembledAv1Frame[0:12]) {
t.Fatal("issue in unmarshalling")
}

if sample.Data[len(sample.Data)-i] != 5 {
t.Fatal("issue in unmarshalling")
}

if i > 0 {
padding := make([]byte, i-1)
if !bytes.Equal(sample.Data[len(sample.Data)-i+1:], padding) {
t.Fatal("issue in unmarshalling")
}
}
}
videoStreamBuilder.Push(pkt)
}
}
})
}

func buildHeaderOnlyAv1Packets(seqNo *uint16, timestamp *uint32, padding int) []*rtp.Packet {
s := *seqNo
t := *timestamp

*timestamp += 1800
*seqNo += 3

return []*rtp.Packet{
// Two header-only OBUs
{Header: rtp.Header{SequenceNumber: s, Timestamp: t}, Payload: buildAv1Payload(0, 0)},
{Header: rtp.Header{SequenceNumber: s + 1, Timestamp: t}, Payload: buildAv1Payload(0, 0)},
{Header: rtp.Header{SequenceNumber: s + 2, Timestamp: t, Marker: true}, Payload: buildAv1Payload(5, padding)},
}
}

func TestAV1SampleBufferSupport_OBUWIthoutPayload(t *testing.T) {
assembledAv1Frame := []byte{2, 0, 2, 0, 2, 1, 5}
t.Run("AV1 Sample Buffer with header only OBU elements", func(t *testing.T) {
videoStreamBuilder := samplebuilder.New(100, &AV1PacketSampleBufferSupport{}, 90000,
samplebuilder.WithMaxTimeDelay(time.Millisecond*100))
var seqNo uint16 = 0

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var-declaration: should drop = 0 from declaration of var seqNo; it is the zero value (revive)
var timestamp uint32 = 0

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for i := 0; i < 4; i++ {
for _, pkt := range buildHeaderOnlyAv1Packets(&seqNo, &timestamp, 0) {
sample := videoStreamBuilder.Pop()
if nil != sample {
if !bytes.Equal(sample.Data, assembledAv1Frame) {
t.Fatal("issue in unmarshalling")
}
}
videoStreamBuilder.Push(pkt)
}
}
})
}
11 changes: 11 additions & 0 deletions codecs/av1/obu/leb128.go
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@@ -68,6 +68,17 @@
return 0, 0, ErrFailedToReadLEB128
}

func SizeLeb128(leb128 uint) uint {

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if (leb128 >> 24) > 0 {

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return 4

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} else if (leb128 >> 16) > 0 {
return 3
} else if (leb128 >> 8) > 0 {
return 2
}
return 1
}

// WriteToLeb128 writes a uint to a LEB128 encoded byte slice.
func WriteToLeb128(in uint) []byte {
b := make([]byte, 10)
5 changes: 4 additions & 1 deletion go.mod
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Original file line number Diff line number Diff line change
@@ -2,4 +2,7 @@ module github.com/pion/rtp

go 1.19

require github.com/pion/randutil v0.1.0
require (
github.com/pion/randutil v0.1.0
github.com/pion/webrtc/v3 v3.2.21
)
168 changes: 168 additions & 0 deletions go.sum
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Original file line number Diff line number Diff line change
@@ -1,2 +1,170 @@
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
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github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
github.com/pion/datachannel v1.5.5/go.mod h1:iMz+lECmfdCMqFRhXhcA/219B0SQlbpoR2V118yimL0=
github.com/pion/dtls/v2 v2.2.7/go.mod h1:8WiMkebSHFD0T+dIU+UeBaoV7kDhOW5oDCzZ7WZ/F9s=
github.com/pion/ice/v2 v2.3.11/go.mod h1:hPcLC3kxMa+JGRzMHqQzjoSj3xtE9F+eoncmXLlCL4E=
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github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
github.com/pion/mdns v0.0.8/go.mod h1:hYE72WX8WDveIhg7fmXgMKivD3Puklk0Ymzog0lSyaI=
github.com/pion/randutil v0.1.0 h1:CFG1UdESneORglEsnimhUjf33Rwjubwj6xfiOXBa3mA=
github.com/pion/randutil v0.1.0/go.mod h1:XcJrSMMbbMRhASFVOlj/5hQial/Y8oH/HVo7TBZq+j8=
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github.com/pion/rtp v1.8.1/go.mod h1:pBGHaFt/yW7bf1jjWAoUjpSNoDnw98KTMg+jWWvziqU=
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github.com/pion/sctp v1.8.8/go.mod h1:igF9nZBrjh5AtmKc7U30jXltsFHicFCXSmWA2GWRaWs=
github.com/pion/sdp/v3 v3.0.6/go.mod h1:iiFWFpQO8Fy3S5ldclBkpXqmWy02ns78NOKoLLL0YQw=
github.com/pion/srtp/v2 v2.0.17/go.mod h1:y5WSHcJY4YfNB/5r7ca5YjHeIr1H3LM1rKArGGs8jMc=
github.com/pion/stun v0.6.1/go.mod h1:/hO7APkX4hZKu/D0f2lHzNyvdkTGtIy3NDmLR7kSz/8=
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github.com/pion/transport/v2 v2.2.1/go.mod h1:cXXWavvCnFF6McHTft3DWS9iic2Mftcz1Aq29pGcU5g=
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github.com/pion/transport/v2 v2.2.3/go.mod h1:q2U/tf9FEfnSBGSW6w5Qp5PFWRLRj3NjLhCCgpRK4p0=
github.com/pion/turn/v2 v2.1.3/go.mod h1:huEpByKKHix2/b9kmTAM3YoX6MKP+/D//0ClgUYR2fY=
github.com/pion/webrtc/v3 v3.2.21 h1:c8fy5JcqJkAQBwwy3Sk9huQLTBUSqaggyRlv9Lnh2zY=
github.com/pion/webrtc/v3 v3.2.21/go.mod h1:vVURQTBOG5BpWKOJz3nlr23NfTDeyKVmubRNqzQp+Tg=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sclevine/agouti v3.0.0+incompatible/go.mod h1:b4WX9W9L1sfQKXeJf1mUTLZKJ48R1S7H23Ji7oFO5Bw=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
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