116 lines
2.2 KiB
Go
116 lines
2.2 KiB
Go
package formatprocessor //nolint:dupl
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/bluenviron/gortsplib/v3/pkg/formats"
|
|
"github.com/bluenviron/gortsplib/v3/pkg/formats/rtpvp8"
|
|
"github.com/pion/rtp"
|
|
|
|
"github.com/bluenviron/mediamtx/internal/logger"
|
|
)
|
|
|
|
// UnitVP8 is a VP8 data unit.
|
|
type UnitVP8 struct {
|
|
BaseUnit
|
|
PTS time.Duration
|
|
Frame []byte
|
|
}
|
|
|
|
type formatProcessorVP8 struct {
|
|
udpMaxPayloadSize int
|
|
format *formats.VP8
|
|
encoder *rtpvp8.Encoder
|
|
decoder *rtpvp8.Decoder
|
|
}
|
|
|
|
func newVP8(
|
|
udpMaxPayloadSize int,
|
|
forma *formats.VP8,
|
|
generateRTPPackets bool,
|
|
_ logger.Writer,
|
|
) (*formatProcessorVP8, error) {
|
|
t := &formatProcessorVP8{
|
|
udpMaxPayloadSize: udpMaxPayloadSize,
|
|
format: forma,
|
|
}
|
|
|
|
if generateRTPPackets {
|
|
err := t.createEncoder()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return t, nil
|
|
}
|
|
|
|
func (t *formatProcessorVP8) createEncoder() error {
|
|
t.encoder = &rtpvp8.Encoder{
|
|
PayloadMaxSize: t.udpMaxPayloadSize - 12,
|
|
PayloadType: t.format.PayloadTyp,
|
|
}
|
|
return t.encoder.Init()
|
|
}
|
|
|
|
func (t *formatProcessorVP8) Process(unit Unit, hasNonRTSPReaders bool) error { //nolint:dupl
|
|
tunit := unit.(*UnitVP8)
|
|
|
|
if tunit.RTPPackets != nil {
|
|
pkt := tunit.RTPPackets[0]
|
|
|
|
// remove padding
|
|
pkt.Header.Padding = false
|
|
pkt.PaddingSize = 0
|
|
|
|
if pkt.MarshalSize() > t.udpMaxPayloadSize {
|
|
return fmt.Errorf("payload size (%d) is greater than maximum allowed (%d)",
|
|
pkt.MarshalSize(), t.udpMaxPayloadSize)
|
|
}
|
|
|
|
// decode from RTP
|
|
if hasNonRTSPReaders || t.decoder != nil {
|
|
if t.decoder == nil {
|
|
var err error
|
|
t.decoder, err = t.format.CreateDecoder2()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
frame, pts, err := t.decoder.Decode(pkt)
|
|
if err != nil {
|
|
if err == rtpvp8.ErrMorePacketsNeeded {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
tunit.Frame = frame
|
|
tunit.PTS = pts
|
|
}
|
|
|
|
// route packet as is
|
|
return nil
|
|
}
|
|
|
|
// encode into RTP
|
|
pkts, err := t.encoder.Encode(tunit.Frame, tunit.PTS)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
tunit.RTPPackets = pkts
|
|
|
|
return nil
|
|
}
|
|
|
|
func (t *formatProcessorVP8) UnitForRTPPacket(pkt *rtp.Packet, ntp time.Time) Unit {
|
|
return &UnitVP8{
|
|
BaseUnit: BaseUnit{
|
|
RTPPackets: []*rtp.Packet{pkt},
|
|
NTP: ntp,
|
|
},
|
|
}
|
|
}
|