mirror of
https://github.com/Monibuca/engine.git
synced 2025-10-06 00:56:58 +08:00
124 lines
2.4 KiB
Go
124 lines
2.4 KiB
Go
package common
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import (
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"bytes"
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"io"
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"net"
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"time"
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"github.com/pion/rtp"
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"m7s.live/engine/v4/codec"
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"m7s.live/engine/v4/log"
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"m7s.live/engine/v4/util"
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)
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func SplitAnnexB[T ~[]byte](frame T, process func(T), delimiter []byte) {
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for after := frame; len(frame) > 0; frame = after {
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if frame, after, _ = bytes.Cut(frame, delimiter); len(frame) > 0 {
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process(frame)
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}
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}
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}
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type RTPFrame struct {
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*rtp.Packet
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Raw []byte
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}
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func (r *RTPFrame) H264Type() (naluType codec.H264NALUType) {
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return naluType.Parse(r.Payload[0])
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}
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func (r *RTPFrame) H265Type() (naluType codec.H265NALUType) {
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return naluType.Parse(r.Payload[0])
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}
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func (r *RTPFrame) Unmarshal(raw []byte) *RTPFrame {
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if r.Packet == nil {
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r.Packet = &rtp.Packet{}
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}
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r.Raw = raw
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if err := r.Packet.Unmarshal(raw); err != nil {
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log.Error(err)
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return nil
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}
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return r
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}
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type BaseFrame struct {
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DeltaTime uint32 // 相对上一帧时间戳，毫秒
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AbsTime uint32 // 绝对时间戳，毫秒
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Timestamp time.Time // 写入时间,可用于比较两个帧的先后
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Sequence uint32 // 在一个Track中的序号
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BytesIn int // 输入字节数用于计算BPS
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}
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type DataFrame[T any] struct {
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BaseFrame
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Value T
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}
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type AVFrame struct {
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BaseFrame
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IFrame bool
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CanRead bool `json:"-"`
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PTS uint32
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DTS uint32
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AVCC util.BLL `json:"-"` // 打包好的AVCC格式(MPEG-4格式、Byte-Stream Format)
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RTP util.List[RTPFrame] `json:"-"`
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AUList util.BLLs `json:"-"` // 裸数据
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mem util.BLL
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}
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func (av *AVFrame) WriteAVCC(ts uint32, frame *util.BLL) {
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av.AbsTime = ts
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av.BytesIn += frame.ByteLength
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for {
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item := frame.Shift()
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if item == nil {
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break
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}
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av.AVCC.Push(item)
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}
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// frame.Transfer(&av.AVCC)
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// frame.ByteLength = 0
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}
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func (av *AVFrame) AppendMem(item *util.ListItem[util.Buffer]) {
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av.mem.Push(item)
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}
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// Reset 重置数据,复用内存
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func (av *AVFrame) Reset() {
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av.RTP.Recycle()
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av.mem.Recycle()
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av.AVCC.Recycle()
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av.AUList.Recycle()
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av.BytesIn = 0
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av.AbsTime = 0
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av.DeltaTime = 0
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}
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type ParamaterSets [][]byte
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func (v ParamaterSets) GetAnnexB() (r net.Buffers) {
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for _, v := range v {
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r = append(r, codec.NALU_Delimiter2, v)
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}
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return
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}
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func (v ParamaterSets) WriteAnnexBTo(w io.Writer) (n int, err error) {
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var n1, n2 int
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for _, v := range v {
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if n1, err = w.Write(codec.NALU_Delimiter2); err != nil {
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return
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}
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n += n1
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if n2, err = w.Write(v); err != nil {
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return
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}
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n += n2
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}
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return
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}
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