packetizer

type Config struct {
	Codec       codec.Type // Codec selects the RTP payloader and timestamp behavior.
	SSRC        uint32     // SSRC is the synchronization source written into output packets.
	PayloadType uint8      // PayloadType is the negotiated RTP payload type to emit.
	MTU         uint16     // Maximum transmission unit (typically 1200)
	ClockRate   uint32     // RTP clock rate (90000 for video, 48000 for Opus)
}

type PacketInfo struct {
	Offset int // Offset into the buffer where this packet starts
	Size   int // Size of this packet
}

type Packetizer interface {
	// PacketizeInto packetizes encoded data into RTP packets.
	// dst is a pre-allocated buffer to hold all packets contiguously.
	// packets is a pre-allocated slice to receive packet info (offset/size).
	// Returns the number of packets written.
	PacketizeInto(data []byte, timestamp uint32, isKeyframe bool, dst []byte, packets []PacketInfo) (int, error)

	// MaxPackets returns the maximum number of packets that could be generated
	// for a frame of the given size.
	MaxPackets(frameSize int) int

	// MaxPacketSize returns the maximum size of a single RTP packet.
	MaxPacketSize() int

	// SequenceNumber returns the next sequence number that will be used.
	SequenceNumber() uint16

	// Close releases resources.
	Close() error
}