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51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package gb28181
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import (
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"github.com/lkmio/avformat"
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"github.com/lkmio/avformat/collections"
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"github.com/lkmio/lkm/stream"
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"github.com/lkmio/rtp"
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)
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type TalkStream struct {
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*stream.RtpStream
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muxer rtp.Muxer
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packet []byte
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}
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func (s *TalkStream) WriteHeader() error {
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return nil
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}
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func (s *TalkStream) Input(packet *avformat.AVPacket, index int) ([]*collections.ReferenceCounter[[]byte], int64, bool, error) {
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var size int
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s.muxer.Input(packet.Data, uint32(packet.Dts), func() []byte {
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return s.packet
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}, func(pkt []byte) {
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size = len(pkt)
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})
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packet = &avformat.AVPacket{Data: s.packet[:size]}
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return s.RtpStream.Input(packet, index)
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}
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func NewTalkTransStream(ssrc uint32) (stream.TransStream, error) {
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return &TalkStream{
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RtpStream: stream.NewRtpTransStream(stream.TransStreamGBTalk, 1024),
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muxer: rtp.NewMuxer(8, 0, ssrc),
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packet: make([]byte, 1500),
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}, nil
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}
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func TalkTransStreamFactory(_ stream.Source, _ stream.TransStreamProtocol, _ []*stream.Track, sink stream.Sink) (stream.TransStream, error) {
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var ssrc uint32 = 0xFFFFFFFF
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if sink != nil {
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forwardSink, ok := sink.(*stream.ForwardSink)
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if ok {
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ssrc = forwardSink.GetSSRC()
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}
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}
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return NewTalkTransStream(ssrc)
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}
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