mirror of
https://github.com/aler9/rtsp-simple-server
synced 2025-10-06 08:06:58 +08:00
51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package message
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import (
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"fmt"
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"github.com/bluenviron/mediamtx/internal/protocols/rtmp/rawmessage"
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)
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// ExtendedSequenceStart is a sequence start extended message.
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type ExtendedSequenceStart struct {
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ChunkStreamID byte
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MessageStreamID uint32
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FourCC FourCC
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Config []byte
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}
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func (m *ExtendedSequenceStart) unmarshal(raw *rawmessage.Message) error {
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if len(raw.Body) < 6 {
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return fmt.Errorf("not enough bytes")
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}
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m.ChunkStreamID = raw.ChunkStreamID
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m.MessageStreamID = raw.MessageStreamID
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m.FourCC = FourCC(raw.Body[1])<<24 | FourCC(raw.Body[2])<<16 | FourCC(raw.Body[3])<<8 | FourCC(raw.Body[4])
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m.Config = raw.Body[5:]
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return nil
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}
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func (m ExtendedSequenceStart) marshalBodySize() int {
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return 5 + len(m.Config)
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}
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func (m ExtendedSequenceStart) marshal() (*rawmessage.Message, error) {
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body := make([]byte, m.marshalBodySize())
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body[0] = 0b10000000 | byte(ExtendedTypeSequenceStart)
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body[1] = uint8(m.FourCC >> 24)
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body[2] = uint8(m.FourCC >> 16)
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body[3] = uint8(m.FourCC >> 8)
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body[4] = uint8(m.FourCC)
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copy(body[5:], m.Config)
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return &rawmessage.Message{
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ChunkStreamID: m.ChunkStreamID,
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Type: uint8(TypeVideo),
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MessageStreamID: m.MessageStreamID,
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Body: body,
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}, nil
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}
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