Method CreateDCtx

cpp/src/arrow/util/compression_zstd.cc:248–261

  }

  Result<DCtxPtr> CreateDCtx() const {
    DCtxPtr dctx{ZSTD_createDCtx(), ZSTD_freeDCtx};
    if (dctx == nullptr) {
      return Status::OutOfMemory("ZSTD_DCtx create failed");
    }
    for (auto& [key, value] : decompression_context_params_) {
      auto ret =
          ZSTD_DCtx_setParameter(dctx.get(), static_cast<ZSTD_dParameter>(key), value);
      if (ZSTD_isError(ret)) {
        return ZSTDError(ret, "ZSTD_DCtx create failed: ");
      }
    }
    return dctx;
  }

  const int compression_level_;
  const std::vector<std::pair<int, int>> compression_context_params_;