A mirror of https://github.com/madler/zlib.git https://git.lua4.win/zlib/atom?h=v1.2.5.3 2012-01-16T02:58:21+00:00 2012-01-16T02:58:21+00:00 Mark Adler madler@alumni.caltech.edu 2012-01-16T02:58:21+00:00 urn:sha1:defd366a41f061dc9dc2bb7ab88876909bd5934c 2012-01-14T18:53:23+00:00 Mark Adler madler@alumni.caltech.edu 2012-01-14T18:53:23+00:00 urn:sha1:68f64498c2bbabaef0180f4d30207db2b0b67f07 2012-01-14T05:54:40+00:00 Mark Adler madler@alumni.caltech.edu 2012-01-14T05:54:40+00:00 urn:sha1:4f5779a8e78e0b1c8b1ecdea88d8456dada17823 This allows deflate to generate the same output when continuing after a Z_SYNC_FLUSH vs. using deflateSetDictionary() after a Z_FULL_FLUSH or a deflateReset(). It also slightly improves compression when flushing by providing two more strings to possibly match at the start of the new block. 2012-01-07T22:08:02+00:00 Mark Adler madler@alumni.caltech.edu 2011-12-29T21:19:27+00:00 urn:sha1:0b828b4aa6c962ab46eae624578d77b35395b2c1 Previously, the bit buffer would hold 1 to 16 bits after "all" of the output is provided after a Z_BLOCK deflate() call. Now at most seven bits remain in the output buffer after Z_BLOCK. flush_pending() now flushes the bit buffer before copying out the byte buffer, in order for it to really flush as much as possible. 2012-01-07T22:03:07+00:00 Mark Adler madler@alumni.caltech.edu 2012-01-07T19:00:37+00:00 urn:sha1:8f5eceefe8b384d7c18813519cb337efef21a0f3 Z_PARTIAL_FLUSH would sometimes emit two empty static blocks instead of one in order to provide enough lookahead for inflate to be able to decode what was last compressed. inflate no longer needs that much lookahead, so this removes the possibility of emitting the second empty static block. Z_PARTIAL_FLUSH will now emit only one empty static block. 2012-01-07T22:03:07+00:00 Mark Adler madler@alumni.caltech.edu 2012-01-07T17:54:40+00:00 urn:sha1:263b1a05b04e442896d7941f87d022a2f35a9220 This allows the insertion of multiple empty static blocks for the purpose of efficiently bringing a stream to a byte boundary. 2011-12-29T08:15:44+00:00 Mark Adler madler@alumni.caltech.edu 2011-12-29T08:15:44+00:00 urn:sha1:19761b8506f15d6eeeb6ccfab33a11abce0f40e7 This avoids having to create useless variables for return values that aren't needed. 2011-12-29T08:03:55+00:00 Mark Adler madler@alumni.caltech.edu 2011-12-29T08:03:55+00:00 urn:sha1:9d55abc96968db80749df5ebf412d36e2d66de26 Previously when doing an empty flush, a extra static or stored block could be emitted before the requested empty static or stored block. This patch prevents the emission of empty blocks by the deflate_* functions. 2011-12-29T07:57:14+00:00 Mark Adler madler@alumni.caltech.edu 2011-12-29T07:57:14+00:00 urn:sha1:f1ebdd6a9c495a5db9a22aa80dd7d54ae7db42e9 The incorporation of the Z_BLOCK flush did not update the rejection of lower ranked flushes immediately after higher ranked flushes with no more input data. This prevented an empty Z_SYNC_FLUSH right after a Z_BLOCK flush, which would be desired to bring the deflate stream to a byte boundary conditionally on whether or not it was already at a byte boundary. This patch re-ranks Z_BLOCK above Z_NO_FLUSH but below Z_PARTIAL_FLUSH, allowing stronger empty flushes to follow a Z_BLOCK flush. 2011-12-24T04:57:10+00:00 Mark Adler madler@alumni.caltech.edu 2011-12-24T04:56:27+00:00 urn:sha1:bafcad90289cb72993e32a5fe8f31c4e60629f9e