79 lines
2.7 KiB
Go
79 lines
2.7 KiB
Go
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package webrtc
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import "github.com/pion/rtp"
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// TrackLocalWriter is the Writer for outbound RTP Packets
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type TrackLocalWriter interface {
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// WriteRTP encrypts a RTP packet and writes to the connection
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WriteRTP(header *rtp.Header, payload []byte) (int, error)
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// Write encrypts and writes a full RTP packet
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Write(b []byte) (int, error)
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}
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// TrackLocalContext is the Context passed when a TrackLocal has been Binded/Unbinded from a PeerConnection, and used
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// in Interceptors.
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type TrackLocalContext struct {
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id string
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params RTPParameters
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ssrc SSRC
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writeStream TrackLocalWriter
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}
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// CodecParameters returns the negotiated RTPCodecParameters. These are the codecs supported by both
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// PeerConnections and the SSRC/PayloadTypes
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func (t *TrackLocalContext) CodecParameters() []RTPCodecParameters {
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return t.params.Codecs
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}
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// HeaderExtensions returns the negotiated RTPHeaderExtensionParameters. These are the header extensions supported by
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// both PeerConnections and the SSRC/PayloadTypes
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func (t *TrackLocalContext) HeaderExtensions() []RTPHeaderExtensionParameter {
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return t.params.HeaderExtensions
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}
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// SSRC requires the negotiated SSRC of this track
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// This track may have multiple if RTX is enabled
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func (t *TrackLocalContext) SSRC() SSRC {
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return t.ssrc
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}
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// WriteStream returns the WriteStream for this TrackLocal. The implementer writes the outbound
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// media packets to it
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func (t *TrackLocalContext) WriteStream() TrackLocalWriter {
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return t.writeStream
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}
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// ID is a unique identifier that is used for both Bind/Unbind
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func (t *TrackLocalContext) ID() string {
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return t.id
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}
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// TrackLocal is an interface that controls how the user can send media
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// The user can provide their own TrackLocal implementations, or use
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// the implementations in pkg/media
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type TrackLocal interface {
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// Bind should implement the way how the media data flows from the Track to the PeerConnection
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// This will be called internally after signaling is complete and the list of available
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// codecs has been determined
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Bind(TrackLocalContext) (RTPCodecParameters, error)
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// Unbind should implement the teardown logic when the track is no longer needed. This happens
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// because a track has been stopped.
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Unbind(TrackLocalContext) error
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// ID is the unique identifier for this Track. This should be unique for the
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// stream, but doesn't have to globally unique. A common example would be 'audio' or 'video'
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// and StreamID would be 'desktop' or 'webcam'
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ID() string
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// RID is the RTP Stream ID for this track.
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RID() string
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// StreamID is the group this track belongs too. This must be unique
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StreamID() string
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// Kind controls if this TrackLocal is audio or video
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Kind() RTPCodecType
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}
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