proto.h

/* Copyright (c) 2015 Antumbra

   This program 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.

   This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */

#ifndef PROTO_H
#define PROTO_H

#include <stdint.h>
#include <stdbool.h>

/* recv and send functions use same buffer. Do not call recv while assembling
   outbound packet. */

const void *proto_recv(uint32_t *api, uint16_t *cmd);
uint32_t proto_get_u32(const void **buf);
uint16_t proto_get_u16(const void **buf);
uint8_t proto_get_u8(const void **buf);
void proto_skip_pad(const void **buf, uint8_t sz);

bool proto_send(uint8_t status, const void *out, uint8_t sz);
void proto_send_start(uint8_t status);
void proto_send_add(const void *out, uint8_t sz);
void proto_send_pad(uint8_t sz);
void proto_send_u32(uint32_t n);
void proto_send_u16(uint16_t n);
void proto_send_u8(uint8_t n);
bool proto_send_end(void);

#endif