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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2022 nghttp3 contributors
* Copyright (c) 2022 nghttp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef NGHTTP2_EXTPRI_H
#define NGHTTP2_EXTPRI_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* defined(HAVE_CONFIG_H) */
#include <nghttp2/nghttp2.h>
/*
* NGHTTP2_EXTPRI_INC_MASK is a bit mask to retrieve incremental bit
* from a value produced by nghttp2_extpri_to_uint8.
*/
#define NGHTTP2_EXTPRI_INC_MASK (1 << 7)
/*
* nghttp2_extpri_to_uint8 encodes |pri| into uint8_t variable.
*/
uint8_t nghttp2_extpri_to_uint8(const nghttp2_extpri *extpri);
/*
* nghttp2_extpri_from_uint8 decodes |u8extpri|, which is produced by
* nghttp2_extpri_to_uint8, intto |extpri|.
*/
void nghttp2_extpri_from_uint8(nghttp2_extpri *extpri, uint8_t u8extpri);
/*
* nghttp2_extpri_uint8_urgency extracts urgency from |PRI| which is
* supposed to be constructed by nghttp2_extpri_to_uint8.
*/
#define nghttp2_extpri_uint8_urgency(PRI) \
((uint32_t)((PRI) & ~NGHTTP2_EXTPRI_INC_MASK))
/*
* nghttp2_extpri_uint8_inc extracts inc from |PRI| which is supposed to
* be constructed by nghttp2_extpri_to_uint8.
*/
#define nghttp2_extpri_uint8_inc(PRI) (((PRI) & NGHTTP2_EXTPRI_INC_MASK) != 0)
#endif /* !defined(NGHTTP2_EXTPRI_H) */
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