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-
-pngsuite
---------
-(c) Willem van Schaik, 1999
-
-Permission to use, copy, and distribute these images for any purpose and
-without fee is hereby granted.
-
-The 15 "bas*.png" images are part of the much larger PngSuite test-set of 
-images, available for developers of PNG supporting software. The 
-complete set, available at http:/www.schaik.com/pngsuite/, contains 
-a variety of images to test interlacing, gamma settings, ancillary
-chunks, etc.
-
-The "ft*.png" images are "free/libre" replacements for the transparent
-corresponding t*.png images in the PngSuite.
-
-The images in this directory represent the basic PNG color-types:
-grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
-(1-8 bit) and grayscale or color images with alpha channel. You
-can use them to test the proper functioning of PNG software.
-
-    filename       depth type
-    ------------ ------ --------------
-    basn0g01.png   1-bit grayscale
-    basn0g02.png   2-bit grayscale
-    basn0g04.png   4-bit grayscale
-    basn0g08.png   8-bit grayscale
-    basn0g16.png  16-bit grayscale
-    basn2c08.png   8-bit truecolor
-    basn2c16.png  16-bit truecolor
-    basn3p01.png   1-bit paletted
-    basn3p02.png   2-bit paletted
-    basn3p04.png   4-bit paletted
-    basn3p08.png   8-bit paletted
-    basn4a08.png   8-bit gray with alpha
-    basn4a16.png  16-bit gray with alpha
-    basn6a08.png   8-bit RGBA
-    basn6a16.png  16-bit RGBA
-
-    ftbbn0g04.png  4-bit grayscale, black bKGD
-    ftbbn2c16.png 16-bit truecolor, black bKGD
-    ftbbn3p08.png  8-bit paletted, black bKGD
-    ftbgn2c16.png 16-bit truecolor, gray bKGD
-    ftbgn3p08.png  8-bit paletted, gray bKGD
-    ftbrn2c08.png  8-bit truecolor, red bKGD
-    ftbwn0g16.png 16-bit gray, white bKGD
-    ftbwn3p08.png  8-bit paletted, white bKGD
-    ftbyn3p08.png  8-bit paletted, yellow bKGD
-    ftp0n0g08.png  8-bit grayscale, opaque
-    ftp0n2c08.png  8-bit truecolor, opaque 
-    ftp0n3p08.png  8-bit paletted, opaque
-    ftp1n3p08.png  8-bit paletted, no bKGD
-
-Here is the correct result of typing "pngtest -m *.png" in
-this directory:
-
-Testing basn0g01.png: PASS (524 zero samples)
- Filter 0 was used 32 times
-Testing basn0g02.png: PASS (448 zero samples)
- Filter 0 was used 32 times
-Testing basn0g04.png: PASS (520 zero samples)
- Filter 0 was used 32 times
-Testing basn0g08.png: PASS (3 zero samples)
- Filter 1 was used 9 times
- Filter 4 was used 23 times
-Testing basn0g16.png: PASS (1 zero samples)
- Filter 1 was used 1 times
- Filter 2 was used 31 times
-Testing basn2c08.png: PASS (6 zero samples)
- Filter 1 was used 5 times
- Filter 4 was used 27 times
-Testing basn2c16.png: PASS (592 zero samples)
- Filter 1 was used 1 times
- Filter 4 was used 31 times
-Testing basn3p01.png: PASS (512 zero samples)
- Filter 0 was used 32 times
-Testing basn3p02.png: PASS (448 zero samples)
- Filter 0 was used 32 times
-Testing basn3p04.png: PASS (544 zero samples)
- Filter 0 was used 32 times
-Testing basn3p08.png: PASS (4 zero samples)
- Filter 0 was used 32 times
-Testing basn4a08.png: PASS (32 zero samples)
- Filter 1 was used 1 times
- Filter 4 was used 31 times
-Testing basn4a16.png: PASS (64 zero samples)
- Filter 0 was used 1 times
- Filter 1 was used 2 times
- Filter 2 was used 1 times
- Filter 4 was used 28 times
-Testing basn6a08.png: PASS (160 zero samples)
- Filter 1 was used 1 times
- Filter 4 was used 31 times
-Testing basn6a16.png: PASS (1072 zero samples)
- Filter 1 was used 4 times
- Filter 4 was used 28 times
-libpng passes test
-
-Willem van Schaik
-<willem@schaik.com>
-October 1999