libpng/contrib/visupng
John Bowler c3e7e7d715 [libpng16] tests backported from libpng 1.7
This updates libpng16 with all the test changes from libpng17,
including changes to pngvalid.c to ensure that the original,
distributed, version of contrib/visupng/cexcept.h can be used.

pngvalid contains the correction to the use of SAVE/STORE_
UNKNOWN_CHUNKS; a bug revealed by changes in libpng 1.7.  More
tests contain the --strict option to detect warnings and the
pngvalid-standard test has been corrected so that it does not
turn on progresive-read (there is a separate test which does
that.)

Some signed/unsigned fixes have been made.

Signed-off-by: John Bowler <jbowler@acm.org>
2015-09-15 15:38:52 -07:00
..
cexcept.h [libpng16] tests backported from libpng 1.7 2015-09-15 15:38:52 -07:00
PngFile.c [libpng16] tests backported from libpng 1.7 2015-09-15 15:38:52 -07:00
PngFile.h
README.txt
resource.h
VisualPng.c
VisualPng.dsp
VisualPng.dsw
VisualPng.ico
VisualPng.png
VisualPng.rc

Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng
------------------------------------------------------------------------

Copyright 2000, Willem van Schaik.

This code is released under the libpng license.
For conditions of distribution and use, see the disclaimer
and license in png.h

As a PNG .dll demo VisualPng is finished. More features would only hinder
the program's objective. However, further extensions (like support for other
graphics formats) are in development. To get these, or for pre-compiled
binaries, go to "http://www.schaik.com/png/visualpng.html".

------------------------------------------------------------------------

Assumes that

   libpng DLLs and LIBs are in ..\..\projects\msvc\win32\libpng
   zlib DLLs and LIBs are in   ..\..\projects\msvc\win32\zlib
   libpng header files are in  ..\..\..\libpng
   zlib header files are in    ..\..\..\zlib
   the pngsuite images are in  ..\pngsuite

To build:

1) On the main menu Select "Build|Set Active configuration".
   Choose the configuration that corresponds to the library you want to test.
   This library must have been built using the libpng MS project located in
   the "..\..\mscv" subdirectory.

2) Select "Build|Clean"

3) Select "Build|Rebuild All"

4) After compiling and linking VisualPng will be started to view an image
   from the PngSuite directory.  Press Ctrl-N (and Ctrl-V) for other images.


To install:

When distributing VisualPng (or a further development) the following options
are available:

1) Build the program with the configuration "Win32 LIB" and you only need to
   include the executable from the ./lib directory in your distribution.

2) Build the program with the configuration "Win32 DLL" and you need to put
   in your distribution the executable from the ./dll directory and the dll's
   libpng1.dll, zlib.dll and msvcrt.dll.  These need to be in the user's PATH.


Willem van Schaik
Calgary, June 6th 2000

P.S. VisualPng was written based on preliminary work of:

    - Simon-Pierre Cadieux
    - Glenn Randers-Pehrson
    - Greg Roelofs