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betaflight/src/main/common/streambuf.h
2016-09-10 16:34:22 +01:00

45 lines
1.5 KiB
C

/*
* This file is part of Cleanflight.
*
* Cleanflight 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.
*
* Cleanflight 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 Cleanflight. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
// simple buffer-based serializer/deserializer without implicit size check
// little-endian encoding implemneted now
typedef struct sbuf_s {
uint8_t *ptr; // data pointer must be first (sbuff_t* is equivalent to uint8_t **)
uint8_t *end;
} sbuf_t;
void sbufWriteU8(sbuf_t *dst, uint8_t val);
void sbufWriteU16(sbuf_t *dst, uint16_t val);
void sbufWriteU32(sbuf_t *dst, uint32_t val);
void sbufWriteData(sbuf_t *dst, const void *data, int len);
void sbufWriteString(sbuf_t *dst, const char *string);
uint8_t sbufReadU8(sbuf_t *src);
uint16_t sbufReadU16(sbuf_t *src);
uint32_t sbufReadU32(sbuf_t *src);
void sbufReadData(sbuf_t *dst, void *data, int len);
int sbufBytesRemaining(sbuf_t *buf);
uint8_t* sbufPtr(sbuf_t *buf);
void sbufAdvance(sbuf_t *buf, int size);
void sbufSwitchToReader(sbuf_t *buf, uint8_t * base);