68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
#ifndef _rtp_util_h_
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#define _rtp_util_h_
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#include "rtp-header.h"
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#include "rtcp-header.h"
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// The Internet Protocol defines big-endian as the standard network byte order
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#define nbo_r16 rtp_read_uint16
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#define nbo_r32 rtp_read_uint32
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#define nbo_w16 rtp_write_uint16
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#define nbo_w32 rtp_write_uint32
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static inline uint16_t rtp_read_uint16(const uint8_t* ptr)
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{
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return (((uint16_t)ptr[0]) << 8) | ptr[1];
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}
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static inline uint32_t rtp_read_uint32(const uint8_t* ptr)
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{
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return (((uint32_t)ptr[0]) << 24) | (((uint32_t)ptr[1]) << 16) | (((uint32_t)ptr[2]) << 8) | ptr[3];
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}
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static inline uint64_t rtp_read_uint64(const uint8_t* ptr)
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{
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return (((uint64_t)rtp_read_uint32(ptr)) << 32) | rtp_read_uint32(ptr + 4);
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}
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static inline void rtp_write_uint16(uint8_t* ptr, uint16_t val)
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{
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ptr[0] = (uint8_t)(val >> 8);
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ptr[1] = (uint8_t)val;
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}
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static inline void rtp_write_uint32(uint8_t* ptr, uint32_t val)
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{
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ptr[0] = (uint8_t)(val >> 24);
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ptr[1] = (uint8_t)(val >> 16);
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ptr[2] = (uint8_t)(val >> 8);
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ptr[3] = (uint8_t)val;
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}
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static inline void rtp_write_uint64(uint8_t* ptr, uint64_t val)
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{
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rtp_write_uint32(ptr, (uint32_t)(val >> 32));
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rtp_write_uint32(ptr + 4, (uint32_t)val);
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}
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static inline void nbo_write_rtp_header(uint8_t *ptr, const rtp_header_t *header)
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{
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ptr[0] = (uint8_t)((header->v << 6) | (header->p << 5) | (header->x << 4) | header->cc);
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ptr[1] = (uint8_t)((header->m << 7) | header->pt);
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ptr[2] = (uint8_t)(header->seq >> 8);
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ptr[3] = (uint8_t)(header->seq & 0xFF);
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nbo_w32(ptr+4, header->timestamp);
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nbo_w32(ptr+8, header->ssrc);
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}
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static inline void nbo_write_rtcp_header(uint8_t *ptr, const rtcp_header_t *header)
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{
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ptr[0] = (uint8_t)((header->v << 6) | (header->p << 5) | header->rc);
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ptr[1] = (uint8_t)(header->pt);
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ptr[2] = (uint8_t)(header->length >> 8);
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ptr[3] = (uint8_t)(header->length & 0xFF);
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}
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#endif /* !_rtp_util_h_ */
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