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[devel] Enable API for setting zlib non-IDAT parameters.

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Glenn Randers-Pehrson 2011-03-31 20:53:47 -05:00
parent 1345cbeea8
commit 1ecd786d95
2 changed files with 6 additions and 0 deletions
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5
scripts/pnglibconf.dfa
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@ -386,6 +386,11 @@ option WRITE_FLUSH requires WRITE
option USER_TRANSFORM_PTR if READ_USER_TRANSFORM WRITE_USER_TRANSFORM
option USER_TRANSFORM_INFO if READ_USER_TRANSFORM WRITE_USER_TRANSFORM
# This enables API to set compression parameters for compressing
# non-IDAT chunks (zTXt, iTXt, iCCP, and unknown chunks). This feature
# was added at libpng-1.5.3.
option WRITE_CUSTOMIZE_ZTXT_COMPRESSION requires WRITE
# Any chunks you are not interested in, you can undef here. The
# ones that allocate memory may be expecially important (hIST,
# tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info

1
scripts/pnglibconf.h.prebuilt
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@ -151,6 +151,7 @@
#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
#define PNG_WRITE_INVERT_SUPPORTED
#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION
#define PNG_WRITE_iTXt_SUPPORTED
#define PNG_WRITE_oFFs_SUPPORTED
#define PNG_WRITE_PACK_SUPPORTED