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38 lines
1.6 KiB
Plaintext
38 lines
1.6 KiB
Plaintext
Name: zlib
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URL: http://zlib.net/
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Version: 1.2.5
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Security Critical: yes
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License: Custom license
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License Android Compatible: yes
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Description:
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General purpose compression library
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Local Modifications:
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A few minor changes, all marked with "Google":
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- Added #ifdefs to avoid compile warnings when NO_GZCOMPRESS is defined.
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- Removed use of strerror for WinCE in gzio.c.
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- Added 'int z_errno' global for WinCE, to which 'errno' is defined in zutil.h.
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- Added 'mozzconf.h' to mangle the function names.
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- Added logic in zlib.h to undef our earlier mangles when defaulting to 64 bit offset versions of API.
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The 'google.patch' file represents our changes from the original zlib-1.2.5.
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A more significant change to support mixed-source data compression. See
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crbug.com/139744 and mixed-source.patch.
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Integrated Intel SIMD optimisations from: https://github.com/jtkukunas/zlib/
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and modified to accomodate the older version and existing changes in tree.
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This introduces new files: simd_stub.c, crc_folding.c, fill_window_sse.c and
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x86.[ch]. All but the latter are built into a static library to allow the
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compiler to use the desired instructions only when valid. The latter version is
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only built on x86 (32-bit and 64-bit) systems with it's functionality stubbed
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on the others.
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Other changes to accomodate:
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- fill_window() implementation calls into _sse() variant when supported and the
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original implementation renamed to _c()
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- read_buf was moved from local to ZLIB_INTERNAL for fill_window_sse.c to use
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- INSERT_STRING macro was made a function, insert_string() and an implementation using CRC instruction added
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- some crc funcionality moved into crc32.c
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