Text file src/image/png/testdata/pngsuite/README.original

Documentation: image/png/testdata/pngsuite

     1
     2pngsuite
     3--------
     4(c) Willem van Schaik, 1999
     5
     6Permission to use, copy, and distribute these images for any purpose and
     7without fee is hereby granted.
     8
     9These 15 images are part of the much larger PngSuite test-set of 
    10images, available for developers of PNG supporting software. The 
    11complete set, available at http:/www.schaik.com/pngsuite/, contains 
    12a variety of images to test interlacing, gamma settings, ancillary
    13chunks, etc.
    14
    15The images in this directory represent the basic PNG color-types:
    16grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
    17(1-8 bit) and grayscale or color images with alpha channel. You
    18can use them to test the proper functioning of PNG software.
    19
    20    filename      depth type
    21    ------------ ------ --------------
    22    basn0g01.png  1-bit grayscale
    23    basn0g02.png  2-bit grayscale
    24    basn0g04.png  4-bit grayscale
    25    basn0g08.png  8-bit grayscale
    26    basn0g16.png 16-bit grayscale
    27    basn2c08.png  8-bit truecolor
    28    basn2c16.png 16-bit truecolor
    29    basn3p01.png  1-bit paletted
    30    basn3p02.png  2-bit paletted
    31    basn3p04.png  4-bit paletted
    32    basn3p08.png  8-bit paletted
    33    basn4a08.png  8-bit gray with alpha
    34    basn4a16.png 16-bit gray with alpha
    35    basn6a08.png  8-bit RGBA
    36    basn6a16.png 16-bit RGBA
    37
    38Here is the correct result of typing "pngtest -m *.png" in
    39this directory:
    40
    41Testing basn0g01.png: PASS (524 zero samples)
    42 Filter 0 was used 32 times
    43Testing basn0g02.png: PASS (448 zero samples)
    44 Filter 0 was used 32 times
    45Testing basn0g04.png: PASS (520 zero samples)
    46 Filter 0 was used 32 times
    47Testing basn0g08.png: PASS (3 zero samples)
    48 Filter 1 was used 9 times
    49 Filter 4 was used 23 times
    50Testing basn0g16.png: PASS (1 zero samples)
    51 Filter 1 was used 1 times
    52 Filter 2 was used 31 times
    53Testing basn2c08.png: PASS (6 zero samples)
    54 Filter 1 was used 5 times
    55 Filter 4 was used 27 times
    56Testing basn2c16.png: PASS (592 zero samples)
    57 Filter 1 was used 1 times
    58 Filter 4 was used 31 times
    59Testing basn3p01.png: PASS (512 zero samples)
    60 Filter 0 was used 32 times
    61Testing basn3p02.png: PASS (448 zero samples)
    62 Filter 0 was used 32 times
    63Testing basn3p04.png: PASS (544 zero samples)
    64 Filter 0 was used 32 times
    65Testing basn3p08.png: PASS (4 zero samples)
    66 Filter 0 was used 32 times
    67Testing basn4a08.png: PASS (32 zero samples)
    68 Filter 1 was used 1 times
    69 Filter 4 was used 31 times
    70Testing basn4a16.png: PASS (64 zero samples)
    71 Filter 0 was used 1 times
    72 Filter 1 was used 2 times
    73 Filter 2 was used 1 times
    74 Filter 4 was used 28 times
    75Testing basn6a08.png: PASS (160 zero samples)
    76 Filter 1 was used 1 times
    77 Filter 4 was used 31 times
    78Testing basn6a16.png: PASS (1072 zero samples)
    79 Filter 1 was used 4 times
    80 Filter 4 was used 28 times
    81libpng passes test
    82
    83Willem van Schaik
    84<willem@schaik.com>
    85October 1999

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