CCTV Camera Pros iDVR-PRO H Series DVRs User Manual

Page 146

Advertising
background image

The “Library”, below, refers to any such software library or work which has

been distributed under these terms. A “work based on the Library” means

either the Library or any derivative work under copyright law: that is to say,

a work containing the Library or a portion of it, either verbatim or with

modifications and/or translated straightforwardly into another language.

(Hereinafter, translation is included without limitation in the term

“modification”.)
“Source code” for a work means the preferred form of the work for making

modifications to it. For a library, complete source code means all the

source code for all modules it contains, plus any associated interface

definition files, plus the scripts used to control compilation and installation

of the library.
Activities other than copying, distribution and modification are not covered

by this License; they are outside its scope. The act of running a program

using the Library is not restricted, and output from such a program is

covered only if its contents constitute a work based on the Library

(independent of the use of the Library in a tool for writing it). Whether that

is true depends on what the Library does and what the program that uses

the Library does.

1. You may copy and distribute verbatim copies of the Library’s complete

source code as you receive it, in any medium, provided that you

conspicuously and appropriately publish on each copy an appropriate

copyright notice and disclaimer of warranty; keep intact all the notices that

refer to this License and to the absence of any warranty; and distribute a

copy of this License along with the Library.
You may charge a fee for the physical act of transferring a copy, and you

may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Library or any portion of it,

thus forming a work based on the Library, and copy and distribute such

modifications or work under the terms of Section 1 above, provided that

you also meet all of these conditions:

a) The modified work must itself be a software library.

b) You must cause the files modified to carry prominent notices

stating that you changed the files and the date of any change.

c) You must cause the whole of the work to be licensed at no charge

to all third parties under the terms of this License.

d) If a facility in the modified Library refers to a function or a table of

data to be supplied by an application program that uses the facility,

other than as an argument passed when the facility is invoked, then

you must make a good faith effort to ensure that, in the event an

application does not supply such function or table, the facility still

operates, and performs whatever part of its purpose remains

meaningful.

(For example, a function in a library to compute square roots has a

purpose that is entirely well-defined independent of the application.

Therefore, Subsection 2d requires that any application-supplied function or

table used by this function must be optional: if the application does not

supply it, the square root function must still compute square roots.)
These requirements apply to the modified work as a whole. If identifiable

sections of that work are not derived from the Library, and can be

reasonably considered independent and separate works in themselves,

then this License, and its terms, do not apply to those sections when you

distribute them as separate works. But when you distribute the same

sections as part of a whole which is a work based on the Library, the

distribution of the whole must be on the terms of this License, whose

permissions for other licensees extend to the entire whole, and thus to

each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest your rights

to work written entirely by you; rather, the intent is to exercise the right to

control the distribution of derivative or collective works based on the

Library.
In addition, mere aggregation of another work not based on the Library

with the Library (or with a work based on the Library) on a volume of a

storage or distribution medium does not bring the other work under the

scope of this License.

3. You may opt to apply the terms of the ordinary GNU General Public

License instead of this License to a given copy of the Library. To do this,

you must alter all the notices that refer to this License, so that they refer to

the ordinary GNU General Public License, version 2, instead of to this

License. (If a newer version than version 2 of the ordinary GNU General

Public License has appeared, then you can specify that version instead if

you wish.) Do not make any other change in these notices.
Once this change is made in a given copy, it is irreversible for that copy, so

the ordinary GNU General Public License applies to all subsequent copies

and derivative works made from that copy.
This option is useful when you wish to copy part of the code of the Library

into a program that is not a library.

4. You may copy and distribute the Library (or a portion or derivative of it,

under Section 2) in object code or executable form under the terms of

Sections 1 and 2 above provided that you accompany it with the complete

corresponding machine-readable source code, which must be distributed

under the terms of Sections 1 and 2 above on a medium customarily used

for software interchange.
If distribution of object code is made by offering access to copy from a

designated place, then offering equivalent access to copy the source code

from the same place satisfies the requirement to distribute the source

code, even though third parties are not compelled to copy the source

along with the object code.

5. A program that contains no derivative of any portion of the Library, but is

designed to work with the Library by being compiled or linked with it, is

called a “work that uses the Library”. Such a work, in isolation, is not a

derivative work of the Library, and therefore falls outside the scope of this

License.
However, linking a “work that uses the Library” with the Library creates an

executable that is a derivative of the Library (because it contains portions

of the Library), rather than a “work that uses the library”. The executable is

therefore covered by this License. Section 6 states terms for distribution of

such executables.
When a “work that uses the Library” uses material from a header file that is

part of the Library, the object code for the work may be a derivative work

of the Library even though the source code is not. Whether this is true is

especially significant if the work can be linked without the Library, or if the

work is itself a library. The threshold for this to be true is not precisely

defined by law.
If such an object file uses only numerical parameters, data structure

layouts and accessors, and small macros and small inline functions (ten

lines or less in length), then the use of the object file is unrestricted,

regardless of whether it is legally a derivative work. (Executables containing

this object code plus portions of the Library will still fall under Section 6.)
Otherwise, if the work is a derivative of the Library, you may distribute the

object code for the work under the terms of Section 6. Any executables

containing that work also fall under Section 6, whether or not they are

linked directly with the Library itself.

6. As an exception to the Sections above, you may also combine or link a

“work that uses the Library” with the Library to produce a work containing

portions of the Library, and distribute that work under terms of your

choice, provided that the terms permit modification of the work for the

customer’s own use and reverse engineering for debugging such

modifications.
You must give prominent notice with each copy of the work that the

Library is used in it and that the Library and its use are covered by this

License. You must supply a copy of this License. If the work during

execution displays copyright notices, you must include the copyright

notice for the Library among them, as well as a reference directing the user

to the copy of this License. Also, you must do one of these things:

a) Accompany the work with the complete corresponding machine-

readable source code for the Library including whatever changes

were used in the work (which must be distributed under Sections 1

and 2 above); and, if the work is an executable linked with the

Library, with the complete machine readable “work that uses the

Library”, as object code and/or source code, so that the user can

modify the Library and then relink to produce a modified executable

containing the modified Library. (It is understood that the user who

changes the contents of definitions files in the Library will not

necessarily be able to recompile the application to use the modified

definitions.)

Advertising