mirror of
https://github.com/wader/fq.git
synced 2024-12-23 13:22:58 +03:00
8e0dde03d0
This will allow passing both cli options and format options to sub decoder. Ex: pass keylog option to a tls decoder when decoding a pcap. Ex: pass decode options to a format inside a http body inside a pcap. Add ArgAs method to lookup argument based on type. This also makes the format decode function have same signature as sub decoders in the decode API. This change decode.Format a bit: DecodeFn is now just func(d *D) any DecodeInArg renamed to DefaultInArg
48 lines
942 B
Go
48 lines
942 B
Go
package mpeg
|
|
|
|
// ISO/IEC 14496-15, 5.3.3.1.2 Syntax
|
|
|
|
import (
|
|
"github.com/wader/fq/format"
|
|
"github.com/wader/fq/pkg/decode"
|
|
"github.com/wader/fq/pkg/interp"
|
|
)
|
|
|
|
var avcNALUFormat decode.Group
|
|
|
|
func init() {
|
|
interp.RegisterFormat(decode.Format{
|
|
Name: format.AVC_AU,
|
|
Description: "H.264/AVC Access Unit",
|
|
DecodeFn: avcAUDecode,
|
|
DefaultInArg: format.AvcAuIn{
|
|
LengthSize: 0,
|
|
},
|
|
RootArray: true,
|
|
RootName: "access_unit",
|
|
Dependencies: []decode.Dependency{
|
|
{Names: []string{format.AVC_NALU}, Group: &avcNALUFormat},
|
|
},
|
|
})
|
|
}
|
|
|
|
func avcAUDecode(d *decode.D) any {
|
|
var ai format.AvcAuIn
|
|
d.ArgAs(&ai)
|
|
|
|
if ai.LengthSize == 0 {
|
|
// TODO: is annexb the correct name?
|
|
annexBDecode(d, avcNALUFormat)
|
|
return nil
|
|
}
|
|
|
|
for d.NotEnd() {
|
|
d.FieldStruct("nalu", func(d *decode.D) {
|
|
l := int64(d.FieldU("length", int(ai.LengthSize)*8)) * 8
|
|
d.FieldFormatLen("nalu", l, avcNALUFormat, nil)
|
|
})
|
|
}
|
|
|
|
return nil
|
|
}
|