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draco/docs/spec/metadata.decoder.md
Frank Galligan 4efc3d27cc Update bitstream spec 
This PR is associated with #134.
2017-07-22 22:35:54 -07:00

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Metadata Decoder

DecodeGeometryMetadata()

DecodeGeometryMetadata(metadata) {
  num_att_metadata                                                      varUI32
  for (i = 0; i < num_att_metadata; ++i) {
    att_id                                                              varUI32
    att_metadata = new AttributeMetadata(att_id)
    DecodeMetadata(att_metadata)
    metadata.att_metadata.push_back(att_metadata)
  }
  DecodeMetadata(metadata)
}

{:.draco-syntax}

DecodeMetadata()

DecodeMetadata(metadata) {
  num_entries                                                           varUI32
  for (i = 0; i < num_entries; ++i) {
    DecodeEntry(metadata)
  }
  num_sub_metadata                                                      varUI32
  for (i = 0; i < num_sub_metadata; ++i) {
    size                                                                UI8
    name                                                                size * UI8
    temp_metadata = new Metadata()
    DecodeMetadata(temp_metadata)
    metadata.sub_metadata[name] = temp_metadata
  }
}

{:.draco-syntax}

DecodeEntry()

DecodeEntry(metadata) {
  size                                                                  UI8
  name                                                                  size * UI8
  size                                                                  varUI32
  value                                                                 size * UI8
  metadata.entries.insert(name, value)
}

{:.draco-syntax}