Linux Standard Base Desktop Specification 4.1 | ||
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This interface shall set the PNG compression strategy.
The parameter png_ptr shall specify the PNG file to compress.
The parameter strategy corresponds directly to the
strategy parameter of the
libz deflateInit2_() interface.
This parameter shall specify the PNG compression strategy to use:
one of
Z_DEFAULT_STRATEGY
,
Z_FILTERED
, and
Z_HUFFMAN_ONLY
.
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png_set_compression_method | Up | png_set_compression_window_bits |