ZLMediaKit/src/Rtmp/utils.cpp
2021-01-17 18:31:50 +08:00

77 lines
1.7 KiB
C++

/*
* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
*
* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
*
* Use of this source code is governed by MIT license that can be found in the
* LICENSE file in the root of the source tree. All contributing project authors
* may be found in the AUTHORS file in the root of the source tree.
*/
#include "utils.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "Util/util.h"
#include "Network/sockutil.h"
using namespace toolkit;
/*
* Used to do unaligned loads on archs that don't support them. GCC can mostly
* optimize these away.
*/
uint32_t load_be32(const void *p)
{
uint32_t val;
memcpy(&val, p, sizeof val);
return ntohl(val);
}
uint16_t load_be16(const void *p)
{
uint16_t val;
memcpy(&val, p, sizeof val);
return ntohs(val);
}
uint32_t load_le32(const void *p)
{
const uint8_t *data = (const uint8_t *) p;
return data[0] | ((uint32_t) data[1] << 8) |
((uint32_t) data[2] << 16) | ((uint32_t) data[3] << 24);
}
uint32_t load_be24(const void *p)
{
const uint8_t *data = (const uint8_t *) p;
return data[2] | ((uint32_t) data[1] << 8) | ((uint32_t) data[0] << 16);
}
void set_be24(void *p, uint32_t val)
{
uint8_t *data = (uint8_t *) p;
data[0] = val >> 16;
data[1] = val >> 8;
data[2] = val;
}
void set_le32(void *p, uint32_t val)
{
uint8_t *data = (uint8_t *) p;
data[0] = val;
data[1] = val >> 8;
data[2] = val >> 16;
data[3] = val >> 24;
}
void set_be32(void *p, uint32_t val)
{
uint8_t *data = (uint8_t *) p;
data[3] = val;
data[2] = val >> 8;
data[1] = val >> 16;
data[0] = val >> 24;
}