Files
monibuca/plugin/mp4/api.go
2025-01-07 13:14:30 +08:00

305 lines
8.8 KiB
Go

package plugin_mp4
import (
"context"
"fmt"
"io"
"net/http"
"os"
"path/filepath"
"time"
"unsafe"
"github.com/mcuadros/go-defaults"
"google.golang.org/protobuf/types/known/emptypb"
m7s "m7s.live/v5"
"m7s.live/v5/pb"
"m7s.live/v5/pkg"
"m7s.live/v5/pkg/config"
"m7s.live/v5/pkg/util"
mp4pb "m7s.live/v5/plugin/mp4/pb"
mp4 "m7s.live/v5/plugin/mp4/pkg"
"m7s.live/v5/plugin/mp4/pkg/box"
)
type ContentPart struct {
*os.File
Start int64
Size int
}
func (p *MP4Plugin) download(w http.ResponseWriter, r *http.Request) {
if p.DB == nil {
http.Error(w, pkg.ErrNoDB.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "video/mp4")
streamPath := r.PathValue("streamPath")
query := r.URL.Query()
var streams []m7s.RecordStream
if id := query.Get("id"); id != "" {
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s_%s.mp4", streamPath, id))
p.DB.Find(&streams, "id=? AND stream_path=?", id, streamPath)
if len(streams) == 0 {
http.Error(w, "record not found", http.StatusNotFound)
return
}
http.ServeFile(w, r, streams[0].FilePath)
return
}
startTime, endTime, err := util.TimeRangeQueryParse(query)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
p.Info("download", "streamPath", streamPath, "start", startTime, "end", endTime)
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s_%s_%s.mp4", streamPath, startTime.Format("20060102150405"), endTime.Format("20060102150405")))
queryRecord := m7s.RecordStream{
Mode: m7s.RecordModeAuto,
}
p.DB.Where(&queryRecord).Find(&streams, "end_time>? AND start_time<? AND stream_path=?", startTime, endTime, streamPath)
muxer := mp4.NewMuxer(0)
var n int
n, err = w.Write(box.MakeFtypBox(box.TypeISOM, 0x200, box.TypeISOM, box.TypeISO2, box.TypeAVC1, box.TypeMP41))
if err != nil {
return
}
muxer.CurrentOffset = int64(n)
var lastTs, tsOffset int64
var parts []*ContentPart
sampleOffset := muxer.CurrentOffset + box.BasicBoxLen*2
mdatOffset := sampleOffset
var audioTrack, videoTrack *mp4.Track
var file *os.File
streamCount := len(streams)
for i, stream := range streams {
tsOffset = lastTs
file, err = os.Open(stream.FilePath)
if err != nil {
return
}
p.Info("read", "file", file.Name())
demuxer := mp4.NewDemuxer(file)
err = demuxer.Demux()
if err != nil {
return
}
if i == 0 {
for _, track := range demuxer.Tracks {
t := muxer.AddTrack(track.Cid)
t.ExtraData = track.ExtraData
if track.Cid.IsAudio() {
audioTrack = t
t.SampleSize = track.SampleSize
t.SampleRate = track.SampleRate
t.ChannelCount = track.ChannelCount
} else if track.Cid.IsVideo() {
videoTrack = t
t.Width = track.Width
t.Height = track.Height
}
}
startTimestamp := startTime.Sub(stream.StartTime).Milliseconds()
var startSample *box.Sample
if startSample, err = demuxer.SeekTime(uint64(startTimestamp)); err != nil {
tsOffset = 0
continue
}
tsOffset = -int64(startSample.DTS)
}
var part *ContentPart
for track, sample := range demuxer.RangeSample {
if i == streamCount-1 && int64(sample.DTS) > endTime.Sub(stream.StartTime).Milliseconds() {
break
}
if part == nil {
part = &ContentPart{
File: file,
Start: sample.Offset,
}
}
part.Size += sample.Size
lastTs = int64(sample.DTS + uint64(tsOffset))
fixSample := *sample
fixSample.DTS += uint64(tsOffset)
fixSample.PTS += uint64(tsOffset)
fixSample.Offset += sampleOffset - part.Start
if track.Cid.IsAudio() {
audioTrack.AddSampleEntry(fixSample)
} else if track.Cid.IsVideo() {
videoTrack.AddSampleEntry(fixSample)
}
}
if part != nil {
sampleOffset += int64(part.Size)
parts = append(parts, part)
}
}
moovSize := muxer.GetMoovSize()
for _, track := range muxer.Tracks {
for i := range track.Samplelist {
track.Samplelist[i].Offset += int64(moovSize)
}
}
err = muxer.WriteMoov(w)
if err != nil {
return
}
var mdatBox = box.MediaDataBox(sampleOffset - mdatOffset)
boxLen, buf := mdatBox.Encode()
if boxLen == box.BasicBoxLen*2 {
w.Write(buf)
} else {
freeBox := box.NewBasicBox(box.TypeFREE)
freeBox.Size = box.BasicBoxLen
_, free := freeBox.Encode()
w.Write(free)
w.Write(buf)
}
var written, totalWritten int64
for _, part := range parts {
part.Seek(part.Start, io.SeekStart)
written, err = io.CopyN(w, part.File, int64(part.Size))
if err != nil {
return
}
totalWritten += written
part.Close()
}
}
func (p *MP4Plugin) StartRecord(ctx context.Context, req *mp4pb.ReqStartRecord) (res *mp4pb.ResponseStartRecord, err error) {
var recordExists bool
res = &mp4pb.ResponseStartRecord{}
p.Server.Records.Call(func() error {
_, recordExists = p.Server.Records.Find(func(job *m7s.RecordJob) bool {
return job.StreamPath == req.StreamPath && job.FilePath == req.FilePath
})
return nil
})
if recordExists {
err = pkg.ErrRecordExists
return
}
p.Server.Streams.Call(func() error {
if stream, ok := p.Server.Streams.Get(req.StreamPath); ok {
recordConf := config.Record{
Append: false,
Fragment: req.Fragment.AsDuration(),
FilePath: req.FilePath,
}
job := p.Record(stream, recordConf, nil)
res.Data = uint64(uintptr(unsafe.Pointer(job.GetTask())))
}
return nil
})
return
}
func (p *MP4Plugin) EventStart(ctx context.Context, req *mp4pb.ReqEventRecord) (res *mp4pb.ResponseEventRecord, err error) {
beforeDuration := p.BeforeDuration
afterDuration := p.AfterDuration
res = &mp4pb.ResponseEventRecord{}
if req.BeforeDuration != "" {
beforeDuration, err = time.ParseDuration(req.BeforeDuration)
if err != nil {
p.Error("EventStart", "error", err)
}
}
if req.AfterDuration != "" {
afterDuration, err = time.ParseDuration(req.AfterDuration)
if err != nil {
p.Error("EventStart", "error", err)
}
}
recorder := p.Meta.Recorder()
var tmpJob *m7s.RecordJob
p.Server.Records.Call(func() error {
tmpJob, _ = p.Server.Records.Find(func(job *m7s.RecordJob) bool {
return job.StreamPath == req.StreamPath
})
return nil
})
if tmpJob == nil { //为空表示没有正在进行的录制,也就是没有自动录像,则进行正常的事件录像
p.Server.Streams.Call(func() error {
if stream, ok := p.Server.Streams.Get(req.StreamPath); ok {
recordConf := config.Record{
Append: false,
Fragment: 0,
FilePath: filepath.Join(p.EventRecordFilePath, stream.StreamPath, time.Now().Local().Format("2006-01-02-15-04-05")),
}
recordJob := recorder.GetRecordJob()
recordJob.EventId = req.EventId
recordJob.EventLevel = req.EventLevel
recordJob.EventName = req.EventName
recordJob.EventDesc = req.EventDesc
recordJob.AfterDuration = afterDuration
recordJob.BeforeDuration = beforeDuration
recordJob.Mode = m7s.RecordModeEvent
var subconfig config.Subscribe
defaults.SetDefaults(&subconfig)
subconfig.BufferTime = beforeDuration
p.Record(stream, recordConf, &subconfig)
}
return nil
})
} else {
if tmpJob.AfterDuration != 0 { //当前有事件录像正在录制,则更新该录像的结束时间
tmpJob.AfterDuration = time.Duration(tmpJob.Subscriber.VideoReader.AbsTime)*time.Millisecond + afterDuration
} else { //当前有自动录像正在录制,则生成事件录像的记录,而不去生成事件录像的文件
recordStream := &m7s.RecordStream{
StreamPath: req.StreamPath,
EventId: req.EventId,
EventLevel: req.EventLevel,
EventDesc: req.EventDesc,
EventName: req.EventName,
Mode: m7s.RecordModeEvent,
BeforeDuration: beforeDuration,
AfterDuration: afterDuration,
}
now := time.Now()
startTime := now.Add(-beforeDuration)
endTime := now.Add(afterDuration)
recordStream.StartTime = startTime
recordStream.EndTime = endTime
if p.DB != nil {
p.DB.Save(&recordStream)
}
}
}
return res, err
}
func (p *MP4Plugin) List(ctx context.Context, req *mp4pb.ReqRecordList) (resp *pb.ResponseList, err error) {
globalReq := &pb.ReqRecordList{
StreamPath: req.StreamPath,
Range: req.Range,
Start: req.Start,
End: req.End,
PageNum: req.PageNum,
PageSize: req.PageSize,
Mode: req.Mode,
Type: "mp4",
}
return p.Server.GetRecordList(ctx, globalReq)
}
func (p *MP4Plugin) Catalog(ctx context.Context, req *emptypb.Empty) (resp *pb.ResponseCatalog, err error) {
return p.Server.GetRecordCatalog(ctx, &pb.ReqRecordCatalog{Type: "mp4"})
}
func (p *MP4Plugin) Delete(ctx context.Context, req *mp4pb.ReqRecordDelete) (resp *pb.ResponseDelete, err error) {
globalReq := &pb.ReqRecordDelete{
StreamPath: req.StreamPath,
Ids: req.Ids,
StartTime: req.StartTime,
EndTime: req.EndTime,
Range: req.Range,
Type: "mp4",
}
return p.Server.DeleteRecord(ctx, globalReq)
}