AAA
e87498d414
Adds an explicit H.264 Native sender mode while preserving VP8 as the default, with one bounded Host/Viewer loopback and an explicit hardware-attribution caveat.
57 lines
1.8 KiB
Go
57 lines
1.8 KiB
Go
package remote
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import (
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"fmt"
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"github.com/TNTcraftHIM/Screener/native/sender/internal/media"
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"github.com/pion/webrtc/v4"
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)
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const (
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h264PayloadType = 114
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h264RTXPayloadType = 115
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)
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// newPeerAPI keeps the default VP8 API untouched. H.264 gets a private
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// MediaEngine so its fixture-derived profile is advertised only on opt-in
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// sessions and cannot alter Web or ordinary Native negotiation.
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func newPeerAPI(codec media.Codec) (*webrtc.API, []webrtc.RTPCodecParameters, error) {
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if codec == media.CodecVP8 {
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return nil, nil, nil
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}
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if codec != media.CodecH264 {
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return nil, nil, fmt.Errorf("unsupported native codec %q", codec)
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}
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engine := &webrtc.MediaEngine{}
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if err := engine.RegisterDefaultCodecs(); err != nil {
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return nil, nil, fmt.Errorf("register default codecs: %w", err)
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}
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feedback := []webrtc.RTCPFeedback{
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{Type: "ccm", Parameter: "fir"},
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{Type: "nack"},
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{Type: "nack", Parameter: "pli"},
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}
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primary := webrtc.RTPCodecParameters{
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RTPCodecCapability: webrtc.RTPCodecCapability{
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MimeType: webrtc.MimeTypeH264, ClockRate: 90_000,
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SDPFmtpLine: media.H264SDPFmtpLine, RTCPFeedback: feedback,
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},
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PayloadType: h264PayloadType,
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}
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rtx := webrtc.RTPCodecParameters{
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RTPCodecCapability: webrtc.RTPCodecCapability{
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MimeType: webrtc.MimeTypeRTX, ClockRate: 90_000,
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SDPFmtpLine: fmt.Sprintf("apt=%d", h264PayloadType),
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},
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PayloadType: h264RTXPayloadType,
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}
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if err := engine.RegisterCodec(primary, webrtc.RTPCodecTypeVideo); err != nil {
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return nil, nil, fmt.Errorf("register H.264 codec: %w", err)
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}
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if err := engine.RegisterCodec(rtx, webrtc.RTPCodecTypeVideo); err != nil {
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return nil, nil, fmt.Errorf("register H.264 RTX codec: %w", err)
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}
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return webrtc.NewAPI(webrtc.WithMediaEngine(engine)), []webrtc.RTPCodecParameters{primary, rtx}, nil
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}
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