### ----------------------------------------------------
### -- PDF::ISO_32000_2
### -- Licenses: Artistic-2.0
### -- Authors: David Warring
### -- File: resources/ISO_32000_2/Table_8-Optional_parameters_for_LZWDecode_and_FlateDecode_filters.json
### ----------------------------------------------------
{
  "table": {
    "caption": "Table 8 — Optional parameters for LZWDecode and FlateDecode filters",
    "head": [
      "Key",
      "Type",
      "Value"
    ],
    "rows": [
      [
        "Predictor",
        "integer",
        "A code that selects the predictor algorithm, if any. If the value of this entry is 1, the filter assumes that the normal algorithm was used to encode the data, without prediction. If the value is greater than 1, the filter assumes that the data were differenced before being encoded, and Predictor selects the predictor algorithm. For more information regarding Predictor values greater than 1, see 7.4.4.4, \"LZW and Flate predictor functions\". Default value: 1."
      ],
      [
        "Colors",
        "integer",
        "(May be used only if Predictor is greater than 1) The number of interleaved colour components per sample. Valid values are 1 to 4 (PDF 1.0) and 1 or greater (PDF 1.3). Default value: 1."
      ],
      [
        "BitsPerComponent",
        "integer",
        "(May be used only if Predictor is greater than 1) The number of bits used to represent each colour component in a sample. Valid values are 1, 2, 4, 8, and (PDF 1.5) 16. Default value: 8."
      ],
      [
        "Columns",
        "integer",
        "(May be used only if Predictor is greater than 1) The number of samples in each row. Default value: 1."
      ],
      [
        "EarlyChange",
        "integer",
        "(LZWDecode only) An indication of when to increase the code length. If the value of this entry is 0, code length increases is postponed as long as possible. If the value is 1, code length increases occurs one code early. This parameter is included because LZW sample code distributed by some vendors increases the code length one code earlier than necessary. Default value: 1."
      ]
    ]
  }
}


