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transport_layer_cc_test.go
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transport_layer_cc_test.go
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// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT
package rtcp
import (
"errors"
"reflect"
"testing"
)
var _ Packet = (*TransportLayerCC)(nil) // assert is a Packet
func TestTransportLayerCC_RunLengthChunkUnmarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data []byte
Want RunLengthChunk
WantError error
}{
{
// 3.1.3 example1: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example1",
Data: []byte{0, 0xDD},
Want: RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketNotReceived,
RunLength: 221,
},
WantError: nil,
},
{
// 3.1.3 example2: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example2",
Data: []byte{0x60, 0x18},
Want: RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedWithoutDelta,
RunLength: 24,
},
WantError: nil,
},
} {
var chunk RunLengthChunk
err := chunk.Unmarshal(test.Data)
if err != nil {
t.Fatalf("Unmarshal err: %v", err)
}
if got, want := chunk, test.Want; got != want {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
}
}
func TestTransportLayerCC_RunLengthChunkMarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data RunLengthChunk
Want []byte
WantError error
}{
{
// 3.1.3 example1: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example1",
Data: RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketNotReceived,
RunLength: 221,
},
Want: []byte{0, 0xDD},
WantError: nil,
},
{
// 3.1.3 example2: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example2",
Data: RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedWithoutDelta,
RunLength: 24,
},
Want: []byte{0x60, 0x18},
WantError: nil,
},
} {
chunk := test.Data
data, _ := chunk.Marshal()
if got, want := data, test.Want; !reflect.DeepEqual(got, want) {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
}
}
func TestTransportLayerCC_StatusVectorChunkUnmarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data []byte
Want StatusVectorChunk
WantError error
}{
{
// 3.1.4 example1: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example1",
Data: []byte{0x9F, 0x1C},
Want: StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeOneBit,
SymbolList: []uint16{TypeTCCPacketNotReceived, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
WantError: nil,
},
{
// 3.1.4 example2: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example2",
Data: []byte{0xCD, 0x50},
Want: StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketNotReceived, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
WantError: nil,
},
} {
var chunk StatusVectorChunk
err := chunk.Unmarshal(test.Data)
if err != nil {
t.Fatalf("Unmarshal err: %v", err)
}
if got, want := chunk, test.Want; got.Type != want.Type || got.SymbolSize != want.SymbolSize || !reflect.DeepEqual(got.SymbolList, want.SymbolList) {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
}
}
func TestTransportLayerCC_StatusVectorChunkMarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data StatusVectorChunk
Want []byte
WantError error
}{
{
// 3.1.4 example1: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example1",
Data: StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeOneBit,
SymbolList: []uint16{TypeTCCPacketNotReceived, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
Want: []byte{0x9F, 0x1C},
WantError: nil,
},
{
// 3.1.4 example2: https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01#page-7
Name: "example2",
Data: StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketNotReceived, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
Want: []byte{0xCD, 0x50},
WantError: nil,
},
} {
chunk := test.Data
data, _ := chunk.Marshal()
if got, want := data, test.Want; !reflect.DeepEqual(got, want) {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
}
}
func TestTransportLayerCC_RecvDeltaUnmarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data []byte
Want RecvDelta
WantError error
}{
{
Name: "small delta 63.75ms",
Data: []byte{0xFF},
Want: RecvDelta{
Type: TypeTCCPacketReceivedSmallDelta,
// 255 * 250
Delta: 63750,
},
WantError: nil,
},
{
Name: "big delta 8191.75ms",
Data: []byte{0x7F, 0xFF},
Want: RecvDelta{
Type: TypeTCCPacketReceivedLargeDelta,
// 32767 * 250
Delta: 8191750,
},
WantError: nil,
},
{
Name: "big delta -8192ms",
Data: []byte{0x80, 0x00},
Want: RecvDelta{
Type: TypeTCCPacketReceivedLargeDelta,
// -32768 * 250
Delta: -8192000,
},
WantError: nil,
},
} {
var chunk RecvDelta
err := chunk.Unmarshal(test.Data)
if err != nil {
t.Fatalf("Unmarshal err: %v", err)
}
if got, want := chunk, test.Want; got != want {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
}
}
func TestTransportLayerCC_RecvDeltaMarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data RecvDelta
Want []byte
WantError error
}{
{
Name: "small delta 63.75ms",
Data: RecvDelta{
Type: TypeTCCPacketReceivedSmallDelta,
// 255 * 250
Delta: 63750,
},
Want: []byte{0xFF},
WantError: nil,
},
{
Name: "big delta 8191.75ms",
Data: RecvDelta{
Type: TypeTCCPacketReceivedLargeDelta,
// 32767 * 250
Delta: 8191750,
},
Want: []byte{0x7F, 0xFF},
WantError: nil,
},
{
Name: "big delta -8192ms",
Data: RecvDelta{
Type: TypeTCCPacketReceivedLargeDelta,
// -32768 * 250
Delta: -8192000,
},
Want: []byte{0x80, 0x00},
WantError: nil,
},
} {
chunk := test.Data
data, _ := chunk.Marshal()
if got, want := data, test.Want; !reflect.DeepEqual(got, want) {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
}
}
// 0 1 2 3
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// |V=2|P| FMT=15 | PT=205 | length |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | SSRC of packet sender |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | SSRC of media source |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | base sequence number | packet status count |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | reference time | fb pkt. count |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | packet chunk | recv delta | recv delta |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// 0b10101111,0b11001101,0b00000000,0b00000101,
// 0b11111010,0b00010111,0b11111010,0b00010111,
// 0b01000011,0b00000011,0b00101111,0b10100000,
// 0b00000000,0b10011001,0b00000000,0b00000001,
// 0b00111101,0b11101000,0b00000010,0b00010111,
// 0b00100000,0b00000001,0b10010100,0b00000001,
func TestTransportLayerCC_Unmarshal(t *testing.T) {
for _, test := range []struct {
Name string
Data []byte
Want TransportLayerCC
WantError error
}{
{
Name: "example1",
Data: []byte{
0xaf, 0xcd, 0x0, 0x5,
0xfa, 0x17, 0xfa, 0x17,
0x43, 0x3, 0x2f, 0xa0,
0x0, 0x99, 0x0, 0x1,
0x3d, 0xe8, 0x2, 0x17,
0x20, 0x1, 0x94, 0x1,
},
Want: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 5,
},
SenderSSRC: 4195875351,
MediaSSRC: 1124282272,
BaseSequenceNumber: 153,
PacketStatusCount: 1,
ReferenceTime: 4057090,
FbPktCount: 23,
// 0b00100000, 0b00000001
PacketChunks: []PacketStatusChunk{
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedSmallDelta,
RunLength: 1,
},
},
// 0b10010100
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 37000,
},
},
},
WantError: nil,
},
{
Name: "example2",
Data: []byte{
0xaf, 0xcd, 0x0, 0x6,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x1, 0x74, 0x0, 0xe,
0x45, 0xb1, 0x5a, 0x40,
0xd8, 0x0, 0xf0, 0xff,
0xd0, 0x0, 0x0, 0x3,
},
Want: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 6,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 372,
PacketStatusCount: 14,
ReferenceTime: 4567386,
FbPktCount: 64,
PacketChunks: []PacketStatusChunk{
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedLargeDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedWithoutDelta},
},
},
// 0b10010100
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 52000,
},
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 0,
},
},
},
WantError: nil,
},
{
Name: "example3",
Data: []byte{
0xaf, 0xcd, 0x0, 0x7,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x1, 0x74, 0x0, 0x6,
0x45, 0xb1, 0x5a, 0x40,
0x40, 0x2, 0x20, 0x04,
0x1f, 0xfe, 0x1f, 0x9a,
0xd0, 0x0, 0xd0, 0x0,
},
Want: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 7,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 372,
PacketStatusCount: 6,
ReferenceTime: 4567386,
FbPktCount: 64,
PacketChunks: []PacketStatusChunk{
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedLargeDelta,
RunLength: 2,
},
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedSmallDelta,
RunLength: 4,
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 2047500,
},
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 2022500,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 52000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 0,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 52000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 0,
},
},
},
WantError: nil,
},
{
Name: "example4",
Data: []byte{
0xaf, 0xcd, 0x0, 0x7,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x0, 0x4, 0x0, 0x7,
0x10, 0x63, 0x6e, 0x1,
0x20, 0x7, 0x4c, 0x24,
0x24, 0x10, 0xc, 0xc,
0x10, 0x0, 0x0, 0x3,
},
Want: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 7,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 4,
PacketStatusCount: 7,
ReferenceTime: 1074030,
FbPktCount: 1,
PacketChunks: []PacketStatusChunk{
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedSmallDelta,
RunLength: 7,
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 19000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 9000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 9000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
},
},
WantError: nil,
},
{
Name: "example5",
Data: []byte{
0xaf, 0xcd, 0x0, 0x6,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x0, 0x1, 0x0, 0xe,
0x10, 0x63, 0x6d, 0x0,
0xba, 0x0, 0x10, 0xc,
0xc, 0x10, 0x0, 0x3,
},
Want: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 6,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 1,
PacketStatusCount: 14,
ReferenceTime: 1074029,
FbPktCount: 0,
PacketChunks: []PacketStatusChunk{
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: 0,
SymbolList: []uint16{TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
},
},
WantError: nil,
},
{
Name: "example6",
Data: []byte{
0xaf, 0xcd, 0x0, 0x7,
0x9b, 0x74, 0xf6, 0x1f,
0x93, 0x71, 0xdc, 0xbc,
0x85, 0x3c, 0x0, 0x9,
0x63, 0xf9, 0x16, 0xb3,
0xd5, 0x52, 0x0, 0x30,
0x9b, 0xaa, 0x6a, 0xaa,
0x7b, 0x1, 0x9, 0x1,
},
Want: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 7,
},
SenderSSRC: 2608133663,
MediaSSRC: 2473712828,
BaseSequenceNumber: 34108,
PacketStatusCount: 9,
ReferenceTime: 6551830,
FbPktCount: 179,
PacketChunks: []PacketStatusChunk{
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketReceivedLargeDelta},
},
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketNotReceived,
RunLength: 48,
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 38750,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 42500,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 26500,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 42500,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 30750,
},
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 66250,
},
},
},
WantError: nil,
},
{
Name: "example7",
Data: []byte{
0x8f, 0xcd, 0x0, 0x4,
0x9a, 0xcb, 0x4, 0x42,
0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0,
},
Want: TransportLayerCC{
Header: Header{
Padding: false,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 4,
},
SenderSSRC: 2596996162,
MediaSSRC: 0,
BaseSequenceNumber: 0,
PacketStatusCount: 0,
ReferenceTime: 0,
FbPktCount: 0,
},
WantError: nil,
},
{
Name: "example8",
Data: []byte{
0xaf, 0xcd, 0x0, 0x5,
0xfa, 0x17, 0xfa, 0x17,
0x43, 0x3, 0x2f, 0xa0,
0x0, 0x99, 0x0, 0x3,
0x3d, 0xe8, 0x2, 0x17,
0x20, 0x3, 0x94, 0x1,
},
Want: TransportLayerCC{},
WantError: errPacketTooShort,
},
{
Name: "example9",
Data: []byte{
0xaf, 0xcd, 0x0, 0x5,
0xfa, 0x17, 0xfa, 0x17,
0x43, 0x3, 0x2f, 0xa0,
0x0, 0x99, 0x0, 0x2,
0x3d, 0xe8, 0x2, 0x17,
0x40, 0x2, 0x94, 0x1,
},
Want: TransportLayerCC{},
WantError: errPacketTooShort,
},
} {
test := test
t.Run(test.Name, func(t *testing.T) {
var chunk TransportLayerCC
err := chunk.Unmarshal(test.Data)
if got, want := err, test.WantError; !errors.Is(got, want) {
t.Fatalf("Unmarshal %q : err = %v, want %v", test.Name, got, want)
}
if err != nil {
return
}
if got, want := chunk, test.Want; !reflect.DeepEqual(got, want) {
t.Fatalf("Unmarshal %q : got = %v, want %v", test.Name, got, want)
}
})
}
}
func TestTransportLayerCC_Marshal(t *testing.T) {
for _, test := range []struct {
Name string
Data TransportLayerCC
Want []byte
WantError error
}{
{
Name: "example1",
Data: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 5,
},
SenderSSRC: 4195875351,
MediaSSRC: 1124282272,
BaseSequenceNumber: 153,
PacketStatusCount: 1,
ReferenceTime: 4057090,
FbPktCount: 23,
// 0b00100000, 0b00000001
PacketChunks: []PacketStatusChunk{
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedSmallDelta,
RunLength: 1,
},
},
// 0b10010100
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 37000,
},
},
},
Want: []byte{
0xaf, 0xcd, 0x0, 0x5,
0xfa, 0x17, 0xfa, 0x17,
0x43, 0x3, 0x2f, 0xa0,
0x0, 0x99, 0x0, 0x1,
0x3d, 0xe8, 0x2, 0x17,
0x20, 0x1, 0x94, 0x1,
},
WantError: nil,
},
{
Name: "example2",
Data: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 6,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 372,
PacketStatusCount: 2,
ReferenceTime: 4567386,
FbPktCount: 64,
PacketChunks: []PacketStatusChunk{
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedLargeDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeTwoBit,
SymbolList: []uint16{TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedWithoutDelta, TypeTCCPacketReceivedWithoutDelta},
},
},
// 0b10010100
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 52000,
},
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 0,
},
},
},
Want: []byte{
0xaf, 0xcd, 0x0, 0x6,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x1, 0x74, 0x0, 0x2,
0x45, 0xb1, 0x5a, 0x40,
0xd8, 0x0, 0xf0, 0xff,
0xd0, 0x0, 0x0, 0x1,
},
WantError: nil,
},
{
Name: "example3",
Data: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 7,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 372,
PacketStatusCount: 6,
ReferenceTime: 4567386,
FbPktCount: 64,
PacketChunks: []PacketStatusChunk{
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedLargeDelta,
RunLength: 2,
},
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedSmallDelta,
RunLength: 4,
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 2047500,
},
{
Type: TypeTCCPacketReceivedLargeDelta,
Delta: 2022500,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 52000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 0,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 52000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 0,
},
},
},
Want: []byte{
0xaf, 0xcd, 0x0, 0x7,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x1, 0x74, 0x0, 0x6,
0x45, 0xb1, 0x5a, 0x40,
0x40, 0x2, 0x20, 0x04,
0x1f, 0xfe, 0x1f, 0x9a,
0xd0, 0x0, 0xd0, 0x0,
},
WantError: nil,
},
{
Name: "example4",
Data: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 7,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 4,
PacketStatusCount: 7,
ReferenceTime: 1074030,
FbPktCount: 1,
PacketChunks: []PacketStatusChunk{
&RunLengthChunk{
Type: TypeTCCRunLengthChunk,
PacketStatusSymbol: TypeTCCPacketReceivedSmallDelta,
RunLength: 7,
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 19000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 9000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 9000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
},
},
Want: []byte{
0xaf, 0xcd, 0x0, 0x7,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x0, 0x4, 0x0, 0x7,
0x10, 0x63, 0x6e, 0x1,
0x20, 0x7, 0x4c, 0x24,
0x24, 0x10, 0xc, 0xc,
0x10, 0x0, 0x0, 0x3,
},
WantError: nil,
},
{
Name: "example5",
Data: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 6,
},
SenderSSRC: 4195875351,
MediaSSRC: 423483579,
BaseSequenceNumber: 1,
PacketStatusCount: 14,
ReferenceTime: 1074029,
FbPktCount: 0,
PacketChunks: []PacketStatusChunk{
&StatusVectorChunk{
Type: TypeTCCStatusVectorChunk,
SymbolSize: TypeTCCSymbolSizeOneBit,
SymbolList: []uint16{TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketReceivedSmallDelta, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived, TypeTCCPacketNotReceived},
},
},
RecvDeltas: []*RecvDelta{
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 3000,
},
{
Type: TypeTCCPacketReceivedSmallDelta,
Delta: 4000,
},
},
},
Want: []byte{
0xaf, 0xcd, 0x0, 0x6,
0xfa, 0x17, 0xfa, 0x17,
0x19, 0x3d, 0xd8, 0xbb,
0x0, 0x1, 0x0, 0xe,
0x10, 0x63, 0x6d, 0x0,
0xba, 0x0, 0x10, 0xc,
0xc, 0x10, 0x0, 0x2,
},
WantError: nil,
},
{
Name: "example6",
Data: TransportLayerCC{
Header: Header{
Padding: true,
Count: FormatTCC,
Type: TypeTransportSpecificFeedback,
Length: 7,
},
SenderSSRC: 4195875351,
MediaSSRC: 1124282272,
BaseSequenceNumber: 39956,
PacketStatusCount: 12,