1 /* 2 * nghttp2 - HTTP/2 C Library 3 * 4 * Copyright (c) 2022 nghttp3 contributors 5 * Copyright (c) 2022 nghttp2 contributors 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining 8 * a copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sublicense, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be 16 * included in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 */ 26 #ifndef NGHTTP2_EXTPRI_H 27 #define NGHTTP2_EXTPRI_H 28 29 #ifdef HAVE_CONFIG_H 30 # include <config.h> 31 #endif /* HAVE_CONFIG_H */ 32 33 #include <nghttp2/nghttp2.h> 34 35 /* 36 * NGHTTP2_EXTPRI_INC_MASK is a bit mask to retrieve incremental bit 37 * from a value produced by nghttp2_extpri_to_uint8. 38 */ 39 #define NGHTTP2_EXTPRI_INC_MASK (1 << 7) 40 41 /* 42 * nghttp2_extpri_to_uint8 encodes |pri| into uint8_t variable. 43 */ 44 uint8_t nghttp2_extpri_to_uint8(const nghttp2_extpri *extpri); 45 46 /* 47 * nghttp2_extpri_from_uint8 decodes |u8extpri|, which is produced by 48 * nghttp2_extpri_to_uint8, intto |extpri|. 49 */ 50 void nghttp2_extpri_from_uint8(nghttp2_extpri *extpri, uint8_t u8extpri); 51 52 /* 53 * nghttp2_extpri_uint8_urgency extracts urgency from |PRI| which is 54 * supposed to be constructed by nghttp2_extpri_to_uint8. 55 */ 56 #define nghttp2_extpri_uint8_urgency(PRI) \ 57 ((uint32_t)((PRI) & ~NGHTTP2_EXTPRI_INC_MASK)) 58 59 /* 60 * nghttp2_extpri_uint8_inc extracts inc from |PRI| which is supposed to 61 * be constructed by nghttp2_extpri_to_uint8. 62 */ 63 #define nghttp2_extpri_uint8_inc(PRI) (((PRI)&NGHTTP2_EXTPRI_INC_MASK) != 0) 64 65 #endif /* NGHTTP2_EXTPRI_H */ 66