mirror of
https://github.com/jech/galene.git
synced 2024-12-27 01:35:48 +01:00
9093339b62
Instead of buffering the last keyframe, we merely keep track of its seqno, and use the main cache for recovering. We also send the whole sequence of packets rather than just the keyframe itself.
487 lines
9.5 KiB
Go
487 lines
9.5 KiB
Go
package packetcache
|
|
|
|
import (
|
|
"bytes"
|
|
"math/rand"
|
|
"reflect"
|
|
"sync"
|
|
"testing"
|
|
|
|
"github.com/pion/rtcp"
|
|
)
|
|
|
|
func randomBuf() []byte {
|
|
length := rand.Int31n(BufSize-1) + 1
|
|
buf := make([]byte, length)
|
|
rand.Read(buf)
|
|
return buf
|
|
}
|
|
|
|
func TestCache(t *testing.T) {
|
|
buf1 := randomBuf()
|
|
buf2 := randomBuf()
|
|
cache := New(16)
|
|
|
|
_, found := cache.Last()
|
|
if found {
|
|
t.Errorf("Found in empty cache")
|
|
}
|
|
|
|
_, i1 := cache.Store(13, 42, false, false, buf1)
|
|
_, i2 := cache.Store(17, 42, false, false, buf2)
|
|
|
|
seqno, found := cache.Last()
|
|
if !found {
|
|
t.Errorf("Not found")
|
|
}
|
|
if seqno != 17 {
|
|
t.Errorf("Expected %v, got %v", 17, seqno)
|
|
}
|
|
|
|
buf := make([]byte, BufSize)
|
|
|
|
l := cache.Get(13, buf)
|
|
if !bytes.Equal(buf[:l], buf1) {
|
|
t.Errorf("Couldn't get 13")
|
|
}
|
|
l = cache.Get(13, nil)
|
|
if l != uint16(len(buf1)) {
|
|
t.Errorf("Couldn't retrieve length")
|
|
}
|
|
l = cache.GetAt(13, i1, buf)
|
|
if !bytes.Equal(buf[:l], buf1) {
|
|
t.Errorf("Couldn't get 13 at %v", i1)
|
|
}
|
|
l = cache.Get(17, buf)
|
|
if !bytes.Equal(buf[:l], buf2) {
|
|
t.Errorf("Couldn't get 17")
|
|
}
|
|
l = cache.GetAt(17, i2, buf)
|
|
if !bytes.Equal(buf[:l], buf2) {
|
|
t.Errorf("Couldn't get 17 at %v", i2)
|
|
}
|
|
|
|
l = cache.Get(42, buf)
|
|
if l != 0 {
|
|
t.Errorf("Creation ex nihilo")
|
|
}
|
|
|
|
l = cache.GetAt(17, i1, buf)
|
|
if l != 0 {
|
|
t.Errorf("Got 17 at %v", i1)
|
|
}
|
|
|
|
l = cache.GetAt(42, i2, buf)
|
|
if l != 0 {
|
|
t.Errorf("Got 42 at %v", i2)
|
|
}
|
|
}
|
|
|
|
func TestCacheOverflow(t *testing.T) {
|
|
cache := New(16)
|
|
|
|
for i := 0; i < 32; i++ {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
|
|
for i := 0; i < 32; i++ {
|
|
buf := make([]byte, BufSize)
|
|
l := cache.Get(uint16(i), buf)
|
|
if i < 16 {
|
|
if l > 0 {
|
|
t.Errorf("Creation ex nihilo: %v", i)
|
|
}
|
|
} else {
|
|
if l != 1 || buf[0] != uint8(i) {
|
|
t.Errorf("Expected [%v], got %v", i, buf[:l])
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCacheGrow(t *testing.T) {
|
|
cache := New(16)
|
|
|
|
for i := 0; i < 24; i++ {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
|
|
cache.Resize(32)
|
|
for i := 0; i < 32; i++ {
|
|
expected := uint16(0)
|
|
if i < 8 {
|
|
expected = uint16(i + 16)
|
|
}
|
|
if i >= 24 {
|
|
expected = uint16(i - 16)
|
|
}
|
|
if cache.entries[i].seqno != expected {
|
|
t.Errorf("At %v, got %v, expected %v",
|
|
i, cache.entries[i].seqno, expected)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCacheShrink(t *testing.T) {
|
|
cache := New(16)
|
|
|
|
for i := 0; i < 24; i++ {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
|
|
cache.Resize(12)
|
|
for i := 0; i < 12; i++ {
|
|
expected := uint16(i + 16)
|
|
if i >= 8 {
|
|
expected = uint16(i + 4)
|
|
}
|
|
if cache.entries[i].seqno != expected {
|
|
t.Errorf("At %v, got %v, expected %v",
|
|
i, cache.entries[i].seqno, expected)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCacheGrowCond(t *testing.T) {
|
|
cache := New(16)
|
|
if len(cache.entries) != 16 {
|
|
t.Errorf("Expected 16, got %v", len(cache.entries))
|
|
}
|
|
|
|
done := cache.ResizeCond(17)
|
|
if done || len(cache.entries) != 16 {
|
|
t.Errorf("Grew cache by 1")
|
|
}
|
|
|
|
done = cache.ResizeCond(15)
|
|
if done || len(cache.entries) != 16 {
|
|
t.Errorf("Shrunk cache by 1")
|
|
}
|
|
|
|
done = cache.ResizeCond(32)
|
|
if !done || len(cache.entries) != 32 {
|
|
t.Errorf("Didn't grow cache")
|
|
}
|
|
|
|
done = cache.ResizeCond(16)
|
|
if !done || len(cache.entries) != 16 {
|
|
t.Errorf("Didn't shrink cache")
|
|
}
|
|
}
|
|
|
|
func TestBitmap(t *testing.T) {
|
|
value := uint64(0xcdd58f1e035379c0)
|
|
packet := make([]byte, 1)
|
|
|
|
cache := New(16)
|
|
|
|
var first uint16
|
|
for i := 0; i < 64; i++ {
|
|
if (value & (1 << i)) != 0 {
|
|
first, _ = cache.Store(uint16(42+i), 0, false, false, packet)
|
|
}
|
|
}
|
|
|
|
value >>= uint16(first - 42)
|
|
if uint32(value) != cache.bitmap.bitmap {
|
|
t.Errorf("Got %b, expected %b", cache.bitmap.bitmap, value)
|
|
}
|
|
}
|
|
|
|
func TestBitmapWrap(t *testing.T) {
|
|
value := uint64(0xcdd58f1e035379c0)
|
|
packet := make([]byte, 1)
|
|
|
|
cache := New(16)
|
|
|
|
cache.Store(0x7000, 0, false, false, packet)
|
|
cache.Store(0xA000, 0, false, false, packet)
|
|
|
|
var first uint16
|
|
for i := 0; i < 64; i++ {
|
|
if (value & (1 << i)) != 0 {
|
|
first, _ = cache.Store(uint16(42+i), 0, false, false, packet)
|
|
}
|
|
}
|
|
|
|
value >>= uint16(first - 42)
|
|
if uint32(value) != cache.bitmap.bitmap {
|
|
t.Errorf("Got %b, expected %b", cache.bitmap.bitmap, value)
|
|
}
|
|
}
|
|
|
|
func TestBitmapGet(t *testing.T) {
|
|
value := uint64(0xcdd58f1e035379c0)
|
|
packet := make([]byte, 1)
|
|
|
|
cache := New(16)
|
|
|
|
for i := 0; i < 64; i++ {
|
|
if (value & (1 << i)) != 0 {
|
|
cache.Store(uint16(42+i), 0, false, false, packet)
|
|
}
|
|
}
|
|
|
|
pos := uint16(42)
|
|
for cache.bitmap.bitmap != 0 {
|
|
found, first, bitmap := cache.BitmapGet(42 + 65)
|
|
if first < pos || first >= pos+64 {
|
|
t.Errorf("First is %v, pos is %v", first, pos)
|
|
}
|
|
if !found {
|
|
t.Fatalf("Didn't find any 0 bits")
|
|
}
|
|
value >>= (first - pos)
|
|
pos = first
|
|
if (value & 1) != 0 {
|
|
t.Errorf("Value is odd")
|
|
}
|
|
value >>= 1
|
|
pos += 1
|
|
for bitmap != 0 {
|
|
if uint8(bitmap&1) == uint8(value&1) {
|
|
t.Errorf("Bitmap mismatch")
|
|
}
|
|
bitmap >>= 1
|
|
value >>= 1
|
|
pos += 1
|
|
}
|
|
}
|
|
if value != 0 {
|
|
t.Errorf("Value is %v", value)
|
|
}
|
|
}
|
|
|
|
func TestBitmapPacket(t *testing.T) {
|
|
value := uint64(0xcdd58f1e035379c0)
|
|
packet := make([]byte, 1)
|
|
|
|
cache := New(16)
|
|
|
|
for i := 0; i < 64; i++ {
|
|
if (value & (1 << i)) != 0 {
|
|
cache.Store(uint16(42+i), 0, false, false, packet)
|
|
}
|
|
}
|
|
|
|
found, first, bitmap := cache.BitmapGet(42 + 65)
|
|
|
|
if !found {
|
|
t.Fatalf("Didn't find any 0 bits")
|
|
}
|
|
|
|
p := rtcp.NackPair{first, rtcp.PacketBitmap(bitmap)}
|
|
p.Range(func(s uint16) bool {
|
|
if s < 42 || s >= 42+64 {
|
|
if (value & (1 << (s - 42))) != 0 {
|
|
t.Errorf("Bit %v unexpectedly set", s-42)
|
|
}
|
|
}
|
|
return true
|
|
})
|
|
}
|
|
|
|
func BenchmarkCachePutGet(b *testing.B) {
|
|
n := 10
|
|
chans := make([]chan uint16, n)
|
|
for i := range chans {
|
|
chans[i] = make(chan uint16, 8)
|
|
}
|
|
|
|
cache := New(96)
|
|
|
|
var wg sync.WaitGroup
|
|
wg.Add(len(chans))
|
|
|
|
for i := range chans {
|
|
go func(ch <-chan uint16) {
|
|
defer wg.Done()
|
|
buf := make([]byte, BufSize)
|
|
for {
|
|
seqno, ok := <-ch
|
|
if !ok {
|
|
return
|
|
}
|
|
l := cache.Get(seqno, buf)
|
|
if l == 0 {
|
|
b.Errorf("Couldn't get %v", seqno)
|
|
}
|
|
}
|
|
}(chans[i])
|
|
}
|
|
|
|
buf := make([]byte, 1200)
|
|
|
|
b.SetBytes(1200)
|
|
b.ResetTimer()
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
seqno := uint16(i)
|
|
cache.Store(seqno, 0, false, false, buf)
|
|
for _, ch := range chans {
|
|
ch <- seqno
|
|
}
|
|
}
|
|
for _, ch := range chans {
|
|
close(ch)
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
type is struct {
|
|
index, seqno uint16
|
|
}
|
|
|
|
func BenchmarkCachePutGetAt(b *testing.B) {
|
|
n := 10
|
|
chans := make([]chan is, n)
|
|
for i := range chans {
|
|
chans[i] = make(chan is, 8)
|
|
}
|
|
|
|
cache := New(96)
|
|
|
|
var wg sync.WaitGroup
|
|
wg.Add(len(chans))
|
|
|
|
for i := range chans {
|
|
go func(ch <-chan is) {
|
|
defer wg.Done()
|
|
buf := make([]byte, BufSize)
|
|
for {
|
|
is, ok := <-ch
|
|
if !ok {
|
|
return
|
|
}
|
|
l := cache.GetAt(is.seqno, is.index, buf)
|
|
if l == 0 {
|
|
b.Errorf("Couldn't get %v", is)
|
|
}
|
|
}
|
|
}(chans[i])
|
|
}
|
|
|
|
buf := make([]byte, 1200)
|
|
|
|
b.SetBytes(1200)
|
|
b.ResetTimer()
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
seqno := uint16(i)
|
|
_, index := cache.Store(seqno, 0, false, false, buf)
|
|
for _, ch := range chans {
|
|
ch <- is{index, seqno}
|
|
}
|
|
}
|
|
for _, ch := range chans {
|
|
close(ch)
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
func TestToBitmap(t *testing.T) {
|
|
l := []uint16{18, 19, 32, 38}
|
|
bb := uint16(1 | 1<<(32-18-1))
|
|
f, b, r := ToBitmap(l)
|
|
if f != 18 || b != bb {
|
|
t.Errorf("Expected %v %v, Got %v %v", 18, bb, f, b)
|
|
}
|
|
if len(r) != 1 || r[0] != 38 {
|
|
t.Errorf("Expected [38], got %v", r)
|
|
}
|
|
|
|
f2, b2, r2 := ToBitmap(r)
|
|
if f2 != 38 || b2 != 0 || len(r2) != 0 {
|
|
t.Errorf("Expected 38 0, got %v %v %v", f2, b2, r2)
|
|
}
|
|
}
|
|
|
|
func TestToBitmapNack(t *testing.T) {
|
|
l := []uint16{18, 19, 32, 38}
|
|
var nacks []rtcp.NackPair
|
|
m := l
|
|
for len(m) > 0 {
|
|
var f, b uint16
|
|
f, b, m = ToBitmap(m)
|
|
nacks = append(nacks, rtcp.NackPair{f, rtcp.PacketBitmap(b)})
|
|
}
|
|
var n []uint16
|
|
for len(nacks) > 0 {
|
|
n = append(n, nacks[0].PacketList()...)
|
|
nacks = nacks[1:]
|
|
}
|
|
if !reflect.DeepEqual(l, n) {
|
|
t.Errorf("Expected %v, got %v", l, n)
|
|
}
|
|
}
|
|
|
|
func TestCacheStatsFull(t *testing.T) {
|
|
cache := New(16)
|
|
for i := 0; i < 32; i++ {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
stats := cache.GetStats(false)
|
|
if stats.Received != 32 ||
|
|
stats.TotalReceived != 32 ||
|
|
stats.Expected != 32 ||
|
|
stats.TotalExpected != 32 ||
|
|
stats.ESeqno != 31 {
|
|
t.Errorf("Expected 32, 32, 32, 32, 31, got %v", stats)
|
|
}
|
|
}
|
|
|
|
func TestCacheStatsDrop(t *testing.T) {
|
|
cache := New(16)
|
|
for i := 0; i < 32; i++ {
|
|
if i != 8 && i != 10 {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
}
|
|
stats := cache.GetStats(false)
|
|
if stats.Received != 30 ||
|
|
stats.TotalReceived != 30 ||
|
|
stats.Expected != 32 ||
|
|
stats.TotalExpected != 32 ||
|
|
stats.ESeqno != 31 {
|
|
t.Errorf("Expected 30, 30, 32, 32, 31, got %v", stats)
|
|
}
|
|
}
|
|
|
|
func TestCacheStatsUnordered(t *testing.T) {
|
|
cache := New(16)
|
|
for i := 0; i < 32; i++ {
|
|
if i != 8 && i != 10 {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
}
|
|
cache.Store(uint16(8), 0, false, false, []byte{8})
|
|
cache.Store(uint16(10), 0, false, false, []byte{10})
|
|
stats := cache.GetStats(false)
|
|
if stats.Received != 32 ||
|
|
stats.TotalReceived != 32 ||
|
|
stats.Expected != 32 ||
|
|
stats.TotalExpected != 32 ||
|
|
stats.ESeqno != 31 {
|
|
t.Errorf("Expected 32, 32, 32, 32, 31, got %v", stats)
|
|
}
|
|
}
|
|
|
|
func TestCacheStatsNack(t *testing.T) {
|
|
cache := New(16)
|
|
for i := 0; i < 32; i++ {
|
|
if i != 8 && i != 10 {
|
|
cache.Store(uint16(i), 0, false, false, []byte{uint8(i)})
|
|
}
|
|
}
|
|
cache.Expect(2)
|
|
cache.Store(uint16(8), 0, false, false, []byte{8})
|
|
cache.Store(uint16(10), 0, false, false, []byte{10})
|
|
stats := cache.GetStats(false)
|
|
if stats.Received != 32 ||
|
|
stats.TotalReceived != 32 ||
|
|
stats.Expected != 34 ||
|
|
stats.TotalExpected != 34 ||
|
|
stats.ESeqno != 31 {
|
|
t.Errorf("Expected 32, 32, 34, 34, 31, got %v", stats)
|
|
}
|
|
}
|