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subscriber.go
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subscriber.go
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package record
import (
"bufio"
"io"
"path/filepath"
"strconv"
"time"
"go.uber.org/zap"
. "m7s.live/engine/v4"
)
type IRecorder interface {
ISubscriber
GetRecorder() *Recorder
Start(streamPath string) error
StartWithFileName(streamPath string, fileName string) error
io.Closer
CreateFile() (FileWr, error)
}
type Recorder struct {
Subscriber
SkipTS uint32
Record `json:"-" yaml:"-"`
File FileWr `json:"-" yaml:"-"`
FileName string // 自定义文件名,分段录像无效
filePath string // 文件路径
append bool // 是否追加模式
}
func (r *Recorder) GetRecorder() *Recorder {
return r
}
func (r *Recorder) CreateFile() (f FileWr, err error) {
r.filePath = r.getFileName(r.Stream.Path) + r.Ext
f, err = r.CreateFileFn(r.filePath, r.append)
logFields := []zap.Field{zap.String("path", r.filePath)}
if fw, ok := f.(*FileWriter); ok && r.Config != nil {
if r.Config.WriteBufferSize > 0 {
logFields = append(logFields, zap.Int("bufferSize", r.Config.WriteBufferSize))
fw.bufw = bufio.NewWriterSize(fw.Writer, r.Config.WriteBufferSize)
fw.Writer = fw.bufw
}
}
if err == nil {
r.Info("create file", logFields...)
} else {
logFields = append(logFields, zap.Error(err))
r.Error("create file", logFields...)
}
return
}
func (r *Recorder) getFileName(streamPath string) (filename string) {
filename = streamPath
if r.Fragment == 0 {
if r.FileName != "" {
filename = filepath.Join(filename, r.FileName)
}
} else {
filename = filepath.Join(filename, strconv.FormatInt(time.Now().Unix(), 10))
}
return
}
func (r *Recorder) start(re IRecorder, streamPath string, subType byte) (err error) {
err = plugin.Subscribe(streamPath, re)
if err == nil {
if _, loaded := RecordPluginConfig.recordings.LoadOrStore(r.ID, re); loaded {
return ErrRecordExist
}
r.Closer = re
go func() {
r.PlayBlock(subType)
RecordPluginConfig.recordings.Delete(r.ID)
}()
}
return
}
func (r *Recorder) cut(absTime uint32) {
if ts := absTime - r.SkipTS; time.Duration(ts)*time.Millisecond >= r.Fragment {
r.SkipTS = absTime
r.Close()
if file, err := r.Spesific.(IRecorder).CreateFile(); err == nil {
r.File = file
r.Spesific.OnEvent(file)
} else {
r.Stop(zap.Error(err))
}
}
}
// func (r *Recorder) Stop(reason ...zap.Field) {
// r.Close()
// r.Subscriber.Stop(reason...)
// }
func (r *Recorder) OnEvent(event any) {
switch v := event.(type) {
case IRecorder:
if file, err := r.Spesific.(IRecorder).CreateFile(); err == nil {
r.File = file
r.Spesific.OnEvent(file)
} else {
r.Stop(zap.Error(err))
}
case AudioFrame:
// 纯音频流的情况下需要切割文件
if r.Fragment > 0 && r.VideoReader == nil {
r.cut(v.AbsTime)
}
case VideoFrame:
if r.Fragment > 0 && v.IFrame {
r.cut(v.AbsTime)
}
default:
r.Subscriber.OnEvent(event)
}
}