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Add SeqNum

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This commit is contained in:
Florian Märkl 2019-06-12 13:44:51 +02:00
commit d9cb444ec6
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5 changed files with 132 additions and 2 deletions
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3
lib/CMakeLists.txt
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@ -20,7 +20,8 @@ set(HEADER_FILES
include/chiaki/audioreceiver.h
include/chiaki/video.h
include/chiaki/videoreceiver.h
include/chiaki/frameprocessor.h)
include/chiaki/frameprocessor.h
include/chiaki/seqnum.h)
set(SOURCE_FILES
src/common.c

56
lib/include/chiaki/seqnum.h Normal file
View file

@ -0,0 +1,56 @@
/*
* This file is part of Chiaki.
*
* Chiaki is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Chiaki is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Chiaki. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef CHIAKI_SEQNUM_H
#define CHIAKI_SEQNUM_H
#include "common.h"
#include <stdbool.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef uint16_t ChiakiSeqNum16;
#define CHIAKI_SEQ_NUM_16_MAX 0xffff
static inline bool chiaki_seq_num_16_lt(ChiakiSeqNum16 a, ChiakiSeqNum16 b)
{
if(a == b)
return false;
int32_t d = (int32_t)b - (int32_t)a;
return (a < b && d < (1 << 15))
|| ((a > b) && -d > (1 << 15));
}
static inline bool chiaki_seq_num_16_gt(ChiakiSeqNum16 a, ChiakiSeqNum16 b)
{
if(a == b)
return false;
int32_t d = (int32_t)b - (int32_t)a;
return (a < b && d > (1 << 15))
|| ((a > b) && -d < (1 << 15));
}
#ifdef __cplusplus
}
#endif
#endif // CHIAKI_SEQNUM_H