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41 lines
859 B
Go
41 lines
859 B
Go
package mpeg
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// ISO/IEC 14496-15, 5.3.3.1.2 Syntax
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import (
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"github.com/wader/fq/format"
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"github.com/wader/fq/format/registry"
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"github.com/wader/fq/pkg/decode"
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)
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var avcNALUFormat []*decode.Format
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func init() {
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registry.MustRegister(&decode.Format{
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Name: format.AVC_AU,
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Description: "H.264/AVC Access Unit",
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DecodeFn: avcAUDecode,
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Dependencies: []decode.Dependency{
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{Names: []string{format.AVC_NALU}, Formats: &avcNALUFormat},
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},
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})
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}
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func avcAUDecode(d *decode.D, in interface{}) interface{} {
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avcIn, ok := in.(format.AvcIn)
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if !ok {
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d.Invalid("avcIn required")
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}
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d.FieldArrayFn("access_unit", func(d *decode.D) {
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for d.NotEnd() {
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d.FieldStructFn("nalu", func(d *decode.D) {
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l := d.FieldU("length", int(avcIn.LengthSize)*8)
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d.FieldFormatLen("nalu", int64(l)*8, avcNALUFormat)
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})
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}
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})
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return nil
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}
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