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// compression.idl
//
// Compression definitions for ZIOP. From the ZIOP 1.0 specification.
//
// http://www.omg.org/spec/ZIOP/

#ifndef _omniorb_compression_idl_
#define _omniorb_compression_idl_

#include <corbaidl.idl>

#pragma prefix "omg.org"

module Compression {
  exception CompressionException {
    long   reason;
    string description;
  };
  exception FactoryAlreadyRegistered { };
  exception UnknownCompressorId { };

  typedef unsigned short CompressorId;

  const CompressorId COMPRESSORID_NONE  = 0;
  const CompressorId COMPRESSORID_GZIP  = 1;
  const CompressorId COMPRESSORID_PKZIP = 2;
  const CompressorId COMPRESSORID_BZIP2 = 3;
  const CompressorId COMPRESSORID_ZLIB  = 4;
  const CompressorId COMPRESSORID_LZMA  = 5;
  const CompressorId COMPRESSORID_LZO   = 6;
  const CompressorId COMPRESSORID_RZIP  = 7;
  const CompressorId COMPRESSORID_7X    = 8;
  const CompressorId COMPRESSORID_XAR   = 9;

  typedef unsigned short CompressionLevel;
  typedef float          CompressionRatio;

  struct CompressorIdLevel {
    CompressorId     compressor_id;
    CompressionLevel compression_level;
  };

  typedef sequence <CompressorIdLevel> CompressorIdLevelList;

  typedef CORBA::OctetSeq Buffer;

  local interface CompressorFactory;

  local interface Compressor {

    void compress(in    Buffer source,
                  inout Buffer target)
      raises (CompressionException);

    void decompress(in    Buffer source,
                    inout Buffer target)
      raises (CompressionException);

    readonly attribute CompressorFactory  compressor_factory;
    readonly attribute CompressionLevel   compression_level;
    readonly attribute unsigned long long compressed_bytes;
    readonly attribute unsigned long long uncompressed_bytes;
    readonly attribute CompressionRatio   compression_ratio;
  };

  typedef sequence<Compressor> CompressorSeq; // omniORB extension

  local interface CompressorFactory {
    readonly attribute CompressorId compressor_id;
    Compressor get_compressor(in CompressionLevel compression_level);
  };

  typedef sequence<CompressorFactory> CompressorFactorySeq;

  local interface CompressionManager {
    void register_factory(in CompressorFactory compressor_factory)
      raises (FactoryAlreadyRegistered);

    void unregister_factory(in CompressorId compressor_id)
      raises (UnknownCompressorId);

    CompressorFactory get_factory(in CompressorId compressor_id)
      raises (UnknownCompressorId);

    Compressor get_compressor(in CompressorId     compressor_id,
                              in CompressionLevel compression_level)
      raises (UnknownCompressorId);

    CompressorFactorySeq get_factories();
  };
};


#endif // _omniorb_compression_idl_