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2957f5084d
* Update zlibng * Set cmake path more directly in zlibng to hopefully fix an issue with the build on drone * I'm dumb, missing / in path * Mackal helps with a dumb gitignore issue * Adding all the files, not sure what's ignoring them and im tired of looking * Some tweaks to zlibng build to hopefully get it to build properly. works on msvc now
102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/* inflate_p.h -- Private inline functions and macros shared with more than one deflate method
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*
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*/
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#ifndef INFLATE_P_H
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#define INFLATE_P_H
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/*
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* Macros shared by inflate() and inflateBack()
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*/
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/* check function to use adler32() for zlib or crc32() for gzip */
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#ifdef GUNZIP
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# define UPDATE(check, buf, len) \
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(state->flags ? PREFIX(crc32)(check, buf, len) : functable.adler32(check, buf, len))
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#else
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# define UPDATE(check, buf, len) functable.adler32(check, buf, len)
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#endif
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/* check macros for header crc */
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#ifdef GUNZIP
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# define CRC2(check, word) \
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do { \
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hbuf[0] = (unsigned char)(word); \
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hbuf[1] = (unsigned char)((word) >> 8); \
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check = PREFIX(crc32)(check, hbuf, 2); \
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} while (0)
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# define CRC4(check, word) \
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do { \
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hbuf[0] = (unsigned char)(word); \
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hbuf[1] = (unsigned char)((word) >> 8); \
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hbuf[2] = (unsigned char)((word) >> 16); \
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hbuf[3] = (unsigned char)((word) >> 24); \
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check = PREFIX(crc32)(check, hbuf, 4); \
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} while (0)
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#endif
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/* Load registers with state in inflate() for speed */
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#define LOAD() \
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do { \
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put = strm->next_out; \
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left = strm->avail_out; \
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next = strm->next_in; \
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have = strm->avail_in; \
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hold = state->hold; \
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bits = state->bits; \
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} while (0)
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/* Restore state from registers in inflate() */
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#define RESTORE() \
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do { \
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strm->next_out = put; \
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strm->avail_out = left; \
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strm->next_in = (z_const unsigned char *)next; \
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strm->avail_in = have; \
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state->hold = hold; \
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state->bits = bits; \
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} while (0)
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/* Clear the input bit accumulator */
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#define INITBITS() \
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do { \
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hold = 0; \
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bits = 0; \
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} while (0)
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/* Ensure that there is at least n bits in the bit accumulator. If there is
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not enough available input to do that, then return from inflate()/inflateBack(). */
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#define NEEDBITS(n) \
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do { \
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while (bits < (unsigned)(n)) \
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PULLBYTE(); \
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} while (0)
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/* Return the low n bits of the bit accumulator (n < 16) */
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#define BITS(n) \
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(hold & ((1U << (unsigned)(n)) - 1))
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/* Remove n bits from the bit accumulator */
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#define DROPBITS(n) \
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do { \
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hold >>= (n); \
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bits -= (unsigned)(n); \
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} while (0)
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/* Remove zero to seven bits as needed to go to a byte boundary */
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#define BYTEBITS() \
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do { \
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hold >>= bits & 7; \
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bits -= bits & 7; \
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} while (0)
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#endif
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/* Set mode=BAD and prepare error message */
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#define SET_BAD(errmsg) \
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do { \
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state->mode = BAD; \
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strm->msg = (char *)errmsg; \
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} while (0)
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