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package mpeg
import (
"github.com/wader/fq/format"
"github.com/wader/fq/pkg/decode"
"github.com/wader/fq/pkg/interp"
)
var hevcAUNALGroup decode.Group
func init() {
interp.RegisterFormat(
format.HEVC_AU,
&decode.Format{
Description: "H.265/HEVC Access Unit",
DecodeFn: hevcAUDecode,
DefaultInArg: format.HEVC_AU_In{
LengthSize: 4,
},
RootArray: true,
RootName: "access_unit",
Dependencies: []decode.Dependency{
{Groups: []*decode.Group{format.HEVC_NALU}, Out: &hevcAUNALGroup},
},
})
}
// TODO: share/refactor with avcAUDecode?
func hevcAUDecode(d *decode.D) any {
var hi format.HEVC_AU_In
d.ArgAs(&hi)
if hi.LengthSize == 0 {
// TODO: is annexb the correct name?
annexBDecode(d, hevcAUNALGroup)
return nil
}
for d.NotEnd() {
d.FieldStruct("nalu", func(d *decode.D) {
l := int64(d.FieldU("length", int(hi.LengthSize)*8)) * 8
d.FieldFormatLen("nalu", l, &hevcAUNALGroup, nil)
})
}
return nil
}
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