62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* vim: set sw=8 ts=8 sts=8 noet: */
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/* capnp_c.h
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*
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* Copyright (C) 2013 James McKaskill
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* Copyright (C) 2014 Steve Dee
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*
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* This software may be modified and distributed under the terms
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* of the MIT license. See the LICENSE file for details.
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*/
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/*
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* functions / structures in this header are private to the capnproto-c
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* library; applications should not call or use them.
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*/
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#ifndef CAPNP_PRIV_H
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#define CAPNP_PRIV_H
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#include "capnp_c.h"
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#if defined(__GNUC__) && __GNUC__ >= 4
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# define intern __attribute__((visibility ("internal")))
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#else
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# define intern /**/
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#endif
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/* capn_stream encapsulates the needed fields for capn_(deflate|inflate) in a
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* similar manner to z_stream from zlib
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*
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* The user should set next_in, avail_in, next_out, avail_out to the
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* available in/out buffers before calling capn_(deflate|inflate).
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*
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* Other fields should be zero initialized.
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*/
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struct capn_stream {
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const uint8_t *next_in;
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size_t avail_in;
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uint8_t *next_out;
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size_t avail_out;
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unsigned zeros, raw;
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uint8_t inflate_buf[8];
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size_t avail_buf;
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};
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#define CAPN_MISALIGNED -1
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#define CAPN_NEED_MORE -2
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/* capn_deflate deflates a stream to the packed format
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* capn_inflate inflates a stream from the packed format
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*
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* Returns:
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* CAPN_MISALIGNED - if the unpacked data is not 8 byte aligned
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* CAPN_NEED_MORE - more packed data/room is required (out for inflate, in for
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* deflate)
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* 0 - success, all output for inflate, all input for deflate processed
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*/
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intern int capn_deflate(struct capn_stream*);
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intern int capn_inflate(struct capn_stream*);
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#endif /* CAPNP_PRIV_H */
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