mirror of
https://github.com/jech/galene.git
synced 2024-11-26 02:25:58 +01:00
3ba2394be7
The server now maintains a set of statuses for each user that are not interpreted by the server but communicated to the other members of the group using 'user' messages.
609 lines
12 KiB
Go
609 lines
12 KiB
Go
package diskwriter
|
|
|
|
import (
|
|
crand "crypto/rand"
|
|
"encoding/hex"
|
|
"errors"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"path/filepath"
|
|
"runtime"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/at-wat/ebml-go/webm"
|
|
"github.com/pion/rtp"
|
|
"github.com/pion/rtp/codecs"
|
|
"github.com/pion/webrtc/v3/pkg/media/samplebuilder"
|
|
|
|
"github.com/jech/galene/conn"
|
|
"github.com/jech/galene/group"
|
|
)
|
|
|
|
var Directory string
|
|
|
|
type Client struct {
|
|
group *group.Group
|
|
id string
|
|
|
|
mu sync.Mutex
|
|
down map[string]*diskConn
|
|
closed bool
|
|
}
|
|
|
|
func newId() string {
|
|
b := make([]byte, 16)
|
|
crand.Read(b)
|
|
return hex.EncodeToString(b)
|
|
}
|
|
|
|
func New(g *group.Group) *Client {
|
|
return &Client{group: g, id: newId()}
|
|
}
|
|
|
|
func (client *Client) Group() *group.Group {
|
|
return client.group
|
|
}
|
|
|
|
func (client *Client) Id() string {
|
|
return client.id
|
|
}
|
|
|
|
func (client *Client) Username() string {
|
|
return "RECORDING"
|
|
}
|
|
|
|
func (client *Client) Challenge(group string, cred group.ClientCredentials) bool {
|
|
return true
|
|
}
|
|
|
|
func (client *Client) OverridePermissions(g *group.Group) bool {
|
|
return true
|
|
}
|
|
|
|
func (client *Client) SetPermissions(perms group.ClientPermissions) {
|
|
return
|
|
}
|
|
|
|
func (client *Client) Permissions() group.ClientPermissions {
|
|
return group.ClientPermissions{}
|
|
}
|
|
|
|
func (client *Client) Status() map[string]interface{} {
|
|
return nil
|
|
}
|
|
|
|
func (client *Client) PushClient(id, username string, permissions group.ClientPermissions, status map[string]interface{}, kind string) error {
|
|
return nil
|
|
}
|
|
|
|
func (client *Client) Close() error {
|
|
client.mu.Lock()
|
|
defer client.mu.Unlock()
|
|
|
|
for _, down := range client.down {
|
|
down.Close()
|
|
}
|
|
client.down = nil
|
|
client.closed = true
|
|
return nil
|
|
}
|
|
|
|
func (client *Client) Kick(id, user, message string) error {
|
|
err := client.Close()
|
|
group.DelClient(client)
|
|
return err
|
|
}
|
|
|
|
func (client *Client) PushConn(g *group.Group, id string, up conn.Up, tracks []conn.UpTrack, replace string) error {
|
|
if client.group != g {
|
|
return nil
|
|
}
|
|
|
|
client.mu.Lock()
|
|
defer client.mu.Unlock()
|
|
|
|
if client.closed {
|
|
return errors.New("disk client is closed")
|
|
}
|
|
|
|
if replace != "" {
|
|
rp := client.down[replace]
|
|
if rp != nil {
|
|
rp.Close()
|
|
delete(client.down, replace)
|
|
} else {
|
|
log.Printf("Disk writer: replacing unknown connection")
|
|
}
|
|
}
|
|
|
|
old := client.down[id]
|
|
if old != nil {
|
|
old.Close()
|
|
delete(client.down, id)
|
|
}
|
|
|
|
if up == nil {
|
|
return nil
|
|
}
|
|
|
|
directory := filepath.Join(Directory, client.group.Name())
|
|
err := os.MkdirAll(directory, 0700)
|
|
if err != nil {
|
|
g.WallOps("Write to disk: " + err.Error())
|
|
return err
|
|
}
|
|
|
|
if client.down == nil {
|
|
client.down = make(map[string]*diskConn)
|
|
}
|
|
|
|
down, err := newDiskConn(client, directory, up, tracks)
|
|
if err != nil {
|
|
g.WallOps("Write to disk: " + err.Error())
|
|
return err
|
|
}
|
|
|
|
client.down[up.Id()] = down
|
|
return nil
|
|
}
|
|
|
|
type diskConn struct {
|
|
client *Client
|
|
directory string
|
|
username string
|
|
hasVideo bool
|
|
|
|
mu sync.Mutex
|
|
file *os.File
|
|
remote conn.Up
|
|
tracks []*diskTrack
|
|
width, height uint32
|
|
lastWarning time.Time
|
|
}
|
|
|
|
// called locked
|
|
func (conn *diskConn) warn(message string) {
|
|
now := time.Now()
|
|
if now.Sub(conn.lastWarning) < 10*time.Second {
|
|
return
|
|
}
|
|
log.Println(message)
|
|
conn.client.group.WallOps(message)
|
|
conn.lastWarning = now
|
|
}
|
|
|
|
// called locked
|
|
func (conn *diskConn) reopen() error {
|
|
for _, t := range conn.tracks {
|
|
if t.writer != nil {
|
|
t.writer.Close()
|
|
t.writer = nil
|
|
}
|
|
}
|
|
conn.file = nil
|
|
|
|
file, err := openDiskFile(conn.directory, conn.username)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
conn.file = file
|
|
return nil
|
|
}
|
|
|
|
func (conn *diskConn) Close() error {
|
|
conn.remote.DelLocal(conn)
|
|
|
|
conn.mu.Lock()
|
|
tracks := make([]*diskTrack, 0, len(conn.tracks))
|
|
for _, t := range conn.tracks {
|
|
if t.writer != nil {
|
|
t.writer.Close()
|
|
t.writer = nil
|
|
}
|
|
tracks = append(tracks, t)
|
|
}
|
|
conn.mu.Unlock()
|
|
|
|
for _, t := range tracks {
|
|
t.remote.DelLocal(t)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func openDiskFile(directory, username string) (*os.File, error) {
|
|
filenameFormat := "2006-01-02T15:04:05.000"
|
|
if runtime.GOOS == "windows" {
|
|
filenameFormat = "2006-01-02T15-04-05-000"
|
|
}
|
|
|
|
filename := time.Now().Format(filenameFormat)
|
|
if username != "" {
|
|
filename = filename + "-" + username
|
|
}
|
|
for counter := 0; counter < 100; counter++ {
|
|
var fn string
|
|
if counter == 0 {
|
|
fn = fmt.Sprintf("%v.webm", filename)
|
|
} else {
|
|
fn = fmt.Sprintf("%v-%02d.webm", filename, counter)
|
|
}
|
|
|
|
fn = filepath.Join(directory, fn)
|
|
f, err := os.OpenFile(
|
|
fn, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600,
|
|
)
|
|
if err == nil {
|
|
return f, nil
|
|
} else if !os.IsExist(err) {
|
|
return nil, err
|
|
}
|
|
}
|
|
return nil, errors.New("couldn't create file")
|
|
}
|
|
|
|
type diskTrack struct {
|
|
remote conn.UpTrack
|
|
conn *diskConn
|
|
|
|
writer webm.BlockWriteCloser
|
|
builder *samplebuilder.SampleBuilder
|
|
|
|
// bit 32 is a boolean indicating that the origin is valid
|
|
origin uint64
|
|
|
|
lastKf uint32
|
|
savedKf *rtp.Packet
|
|
}
|
|
|
|
func newDiskConn(client *Client, directory string, up conn.Up, remoteTracks []conn.UpTrack) (*diskConn, error) {
|
|
_, username := up.User()
|
|
conn := diskConn{
|
|
client: client,
|
|
directory: directory,
|
|
username: username,
|
|
tracks: make([]*diskTrack, 0, len(remoteTracks)),
|
|
remote: up,
|
|
}
|
|
for _, remote := range remoteTracks {
|
|
var builder *samplebuilder.SampleBuilder
|
|
codec := remote.Codec()
|
|
switch strings.ToLower(codec.MimeType) {
|
|
case "audio/opus":
|
|
builder = samplebuilder.New(
|
|
16, &codecs.OpusPacket{}, codec.ClockRate,
|
|
samplebuilder.WithPartitionHeadChecker(
|
|
&codecs.OpusPartitionHeadChecker{},
|
|
),
|
|
)
|
|
case "video/vp8":
|
|
if conn.hasVideo {
|
|
return nil, errors.New("multiple video tracks not supported")
|
|
}
|
|
builder = samplebuilder.New(
|
|
128, &codecs.VP8Packet{}, codec.ClockRate,
|
|
samplebuilder.WithPartitionHeadChecker(
|
|
&codecs.VP8PartitionHeadChecker{},
|
|
),
|
|
)
|
|
conn.hasVideo = true
|
|
case "video/vp9":
|
|
if conn.hasVideo {
|
|
return nil, errors.New("multiple video tracks not supported")
|
|
}
|
|
builder = samplebuilder.New(
|
|
128, &codecs.VP9Packet{}, codec.ClockRate,
|
|
samplebuilder.WithPartitionHeadChecker(
|
|
&codecs.VP9PartitionHeadChecker{},
|
|
),
|
|
)
|
|
conn.hasVideo = true
|
|
default:
|
|
client.group.WallOps(
|
|
"Cannot record codec " + codec.MimeType,
|
|
)
|
|
continue
|
|
}
|
|
track := &diskTrack{
|
|
remote: remote,
|
|
builder: builder,
|
|
conn: &conn,
|
|
}
|
|
conn.tracks = append(conn.tracks, track)
|
|
}
|
|
|
|
// Only do this after all tracks have been added to conn, to avoid
|
|
// racing on hasVideo.
|
|
for _, t := range conn.tracks {
|
|
err := t.remote.AddLocal(t)
|
|
if err != nil {
|
|
log.Printf("Couldn't add disk track: %v", err)
|
|
conn.warn("Couldn't add disk track: " + err.Error())
|
|
}
|
|
}
|
|
err := up.AddLocal(&conn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &conn, nil
|
|
}
|
|
|
|
func (t *diskTrack) SetTimeOffset(ntp uint64, rtp uint32) {
|
|
}
|
|
|
|
func (t *diskTrack) SetCname(string) {
|
|
}
|
|
|
|
func clonePacket(packet *rtp.Packet) *rtp.Packet {
|
|
buf, err := packet.Marshal()
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
var p rtp.Packet
|
|
err = p.Unmarshal(buf)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
return &p
|
|
}
|
|
|
|
func isKeyframe(codec string, data []byte) bool {
|
|
switch strings.ToLower(codec) {
|
|
case "video/vp8":
|
|
if len(data) < 1 {
|
|
return false
|
|
}
|
|
return (data[0] & 0x1) == 0
|
|
case "video/vp9":
|
|
if len(data) < 1 {
|
|
return false
|
|
}
|
|
if data[0]&0xC0 != 0x80 {
|
|
return false
|
|
}
|
|
profile := (data[0] >> 4) & 0x3
|
|
if profile != 3 {
|
|
return (data[0] & 0xC) == 0
|
|
}
|
|
return (data[0] & 0x6) == 0
|
|
default:
|
|
panic("Eek!")
|
|
}
|
|
}
|
|
|
|
func keyframeDimensions(codec string, data []byte, packet *rtp.Packet) (uint32, uint32) {
|
|
switch strings.ToLower(codec) {
|
|
case "video/vp8":
|
|
if len(data) < 10 {
|
|
return 0, 0
|
|
}
|
|
raw := uint32(data[6]) | uint32(data[7])<<8 |
|
|
uint32(data[8])<<16 | uint32(data[9])<<24
|
|
width := raw & 0x3FFF
|
|
height := (raw >> 16) & 0x3FFF
|
|
return width, height
|
|
case "video/vp9":
|
|
if packet == nil {
|
|
return 0, 0
|
|
}
|
|
var vp9 codecs.VP9Packet
|
|
_, err := vp9.Unmarshal(packet.Payload)
|
|
if err != nil {
|
|
return 0, 0
|
|
}
|
|
if !vp9.V {
|
|
return 0, 0
|
|
}
|
|
w := uint32(0)
|
|
h := uint32(0)
|
|
for i := range vp9.Width {
|
|
if i >= len(vp9.Height) {
|
|
break
|
|
}
|
|
if w < uint32(vp9.Width[i]) {
|
|
w = uint32(vp9.Width[i])
|
|
}
|
|
if h < uint32(vp9.Height[i]) {
|
|
h = uint32(vp9.Height[i])
|
|
}
|
|
}
|
|
return w, h
|
|
default:
|
|
return 0, 0
|
|
}
|
|
}
|
|
|
|
func (t *diskTrack) WriteRTP(packet *rtp.Packet) error {
|
|
// since we call initWriter, we take the connection lock for simplicity.
|
|
t.conn.mu.Lock()
|
|
defer t.conn.mu.Unlock()
|
|
|
|
if t.builder == nil {
|
|
return nil
|
|
}
|
|
|
|
codec := t.remote.Codec()
|
|
|
|
p := clonePacket(packet)
|
|
if p == nil {
|
|
return nil
|
|
}
|
|
|
|
if strings.ToLower(codec.MimeType) == "video/vp9" {
|
|
var vp9 codecs.VP9Packet
|
|
_, err := vp9.Unmarshal(p.Payload)
|
|
if err == nil && vp9.B && len(vp9.Payload) >= 1 {
|
|
profile := (vp9.Payload[0] >> 4) & 0x3
|
|
kf := false
|
|
if profile != 3 {
|
|
kf = (vp9.Payload[0] & 0xC) == 0
|
|
} else {
|
|
kf = (vp9.Payload[0] & 0x6) == 0
|
|
}
|
|
if kf {
|
|
t.savedKf = p
|
|
}
|
|
}
|
|
}
|
|
|
|
kfNeeded := false
|
|
|
|
t.builder.Push(p)
|
|
|
|
for {
|
|
sample, ts := t.builder.PopWithTimestamp()
|
|
if sample == nil {
|
|
if kfNeeded {
|
|
return conn.ErrKeyframeNeeded
|
|
}
|
|
return nil
|
|
}
|
|
|
|
keyframe := true
|
|
|
|
switch strings.ToLower(codec.MimeType) {
|
|
case "video/vp8", "video/vp9":
|
|
keyframe = isKeyframe(codec.MimeType, sample.Data)
|
|
if keyframe {
|
|
err := t.conn.initWriter(
|
|
keyframeDimensions(
|
|
codec.MimeType, sample.Data,
|
|
t.savedKf,
|
|
),
|
|
)
|
|
if err != nil {
|
|
t.conn.warn(
|
|
"Write to disk " + err.Error(),
|
|
)
|
|
return err
|
|
}
|
|
t.lastKf = ts
|
|
} else if t.writer != nil {
|
|
// Request a keyframe every 4s
|
|
delta := ts - t.lastKf
|
|
if (delta&0x80000000) != 0 || delta > 4*90000 {
|
|
kfNeeded = true
|
|
}
|
|
}
|
|
default:
|
|
if t.writer == nil {
|
|
if !t.conn.hasVideo {
|
|
err := t.conn.initWriter(0, 0)
|
|
if err != nil {
|
|
t.conn.warn(
|
|
"Write to disk " +
|
|
err.Error(),
|
|
)
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if t.writer == nil {
|
|
if !keyframe {
|
|
return conn.ErrKeyframeNeeded
|
|
}
|
|
return nil
|
|
}
|
|
|
|
if t.origin == 0 {
|
|
t.origin = uint64(ts) | (1 << 32)
|
|
}
|
|
ts -= uint32(t.origin)
|
|
|
|
tm := ts / (t.remote.Codec().ClockRate / 1000)
|
|
_, err := t.writer.Write(keyframe, int64(tm), sample.Data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
// called locked
|
|
func (conn *diskConn) initWriter(width, height uint32) error {
|
|
if conn.file != nil && width == conn.width && height == conn.height {
|
|
return nil
|
|
}
|
|
var entries []webm.TrackEntry
|
|
for i, t := range conn.tracks {
|
|
var entry webm.TrackEntry
|
|
codec := t.remote.Codec()
|
|
switch strings.ToLower(codec.MimeType) {
|
|
case "audio/opus":
|
|
entry = webm.TrackEntry{
|
|
Name: "Audio",
|
|
TrackNumber: uint64(i + 1),
|
|
CodecID: "A_OPUS",
|
|
TrackType: 2,
|
|
Audio: &webm.Audio{
|
|
SamplingFrequency: float64(codec.ClockRate),
|
|
Channels: uint64(codec.Channels),
|
|
},
|
|
}
|
|
case "video/vp8":
|
|
entry = webm.TrackEntry{
|
|
Name: "Video",
|
|
TrackNumber: uint64(i + 1),
|
|
CodecID: "V_VP8",
|
|
TrackType: 1,
|
|
Video: &webm.Video{
|
|
PixelWidth: uint64(width),
|
|
PixelHeight: uint64(height),
|
|
},
|
|
}
|
|
case "video/vp9":
|
|
entry = webm.TrackEntry{
|
|
Name: "Video",
|
|
TrackNumber: uint64(i + 1),
|
|
CodecID: "V_VP9",
|
|
TrackType: 1,
|
|
Video: &webm.Video{
|
|
PixelWidth: uint64(width),
|
|
PixelHeight: uint64(height),
|
|
},
|
|
}
|
|
default:
|
|
return errors.New("unknown track type")
|
|
}
|
|
entries = append(entries, entry)
|
|
}
|
|
|
|
err := conn.reopen()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
writers, err := webm.NewSimpleBlockWriter(conn.file, entries)
|
|
if err != nil {
|
|
conn.file.Close()
|
|
conn.file = nil
|
|
return err
|
|
}
|
|
|
|
if len(writers) != len(conn.tracks) {
|
|
conn.file.Close()
|
|
conn.file = nil
|
|
return errors.New("unexpected number of writers")
|
|
}
|
|
|
|
conn.width = width
|
|
conn.height = height
|
|
|
|
for i, t := range conn.tracks {
|
|
t.writer = writers[i]
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (down *diskConn) GetMaxBitrate(now uint64) uint64 {
|
|
return ^uint64(0)
|
|
}
|
|
|
|
func (t *diskTrack) Accumulate(bytes uint32) {
|
|
return
|
|
}
|