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sal_rtp.h
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sal_rtp.h
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#ifndef __MA_RTP_H__
#define __MA_RTP_H__
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
#include "sal_standard.h"
typedef struct RTSP_INTERLEAVED_FRAME
{
unsigned char flag;
unsigned char channel;
unsigned short size;
} RTSP_INTERLEAVED_FRAME;
/******************************************************************
RTP_FIXED_HEADER
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|V=2|P|X| CC |M| PT | sequence number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| timestamp |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| synchronization source (SSRC) identifier |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
| contributing source (CSRC) identifiers |
| .... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
******************************************************************/
typedef struct RTP_FIXED_HEADER
{
/* byte 0 */
unsigned char csrc_len:4; /* CC expect 0 */
unsigned char extension:1;/* X expect 1, see RTP_OP below */
unsigned char padding:1; /* P expect 0 */
unsigned char version:2; /* V expect 2 */
/* byte 1 */
unsigned char payload:7; /* PT RTP_PAYLOAD_RTSP */
unsigned char marker:1; /* M expect 1 */
/* byte 2,3 */
unsigned short seq_no; /*sequence number*/
/* byte 4-7 */
unsigned long timestamp;
/* byte 8-11 */
unsigned long ssrc; /* stream number is used here. */
} RTP_FIXED_HEADER;/*12 bytes*/
//only for h265
enum NalUnitType
{
NAL_UNIT_CODED_SLICE_TRAIL_N = 0, // 0
NAL_UNIT_CODED_SLICE_TRAIL_R, // 1
NAL_UNIT_CODED_SLICE_TSA_N, // 2
NAL_UNIT_CODED_SLICE_TLA, // 3 // Current name in the spec: TSA_R
NAL_UNIT_CODED_SLICE_STSA_N, // 4
NAL_UNIT_CODED_SLICE_STSA_R, // 5
NAL_UNIT_CODED_SLICE_RADL_N, // 6
NAL_UNIT_CODED_SLICE_DLP, // 7 // Current name in the spec: RADL_R
NAL_UNIT_CODED_SLICE_RASL_N, // 8
NAL_UNIT_CODED_SLICE_TFD, // 9 // Current name in the spec: RASL_R
NAL_UNIT_RESERVED_10,
NAL_UNIT_RESERVED_11,
NAL_UNIT_RESERVED_12,
NAL_UNIT_RESERVED_13,
NAL_UNIT_RESERVED_14,
NAL_UNIT_RESERVED_15,
NAL_UNIT_CODED_SLICE_BLA, // 16 // Current name in the spec: BLA_W_LP
NAL_UNIT_CODED_SLICE_BLANT, // 17 // Current name in the spec: BLA_W_DLP
NAL_UNIT_CODED_SLICE_BLA_N_LP, // 18
NAL_UNIT_CODED_SLICE_IDR, // 19 // Current name in the spec: IDR_W_DLP
NAL_UNIT_CODED_SLICE_IDR_N_LP, // 20
NAL_UNIT_CODED_SLICE_CRA, // 21
NAL_UNIT_RESERVED_22,
NAL_UNIT_RESERVED_23,
NAL_UNIT_RESERVED_24,
NAL_UNIT_RESERVED_25,
NAL_UNIT_RESERVED_26,
NAL_UNIT_RESERVED_27,
NAL_UNIT_RESERVED_28,
NAL_UNIT_RESERVED_29,
NAL_UNIT_RESERVED_30,
NAL_UNIT_RESERVED_31,
NAL_UNIT_VPS, // 32
NAL_UNIT_SPS, // 33
NAL_UNIT_PPS, // 34
NAL_UNIT_ACCESS_UNIT_DELIMITER, // 35
NAL_UNIT_EOS, // 36
NAL_UNIT_EOB, // 37
NAL_UNIT_FILLER_DATA, // 38
NAL_UNIT_SEI, // 39 Prefix SEI
NAL_UNIT_SEI_SUFFIX, // 40 Suffix SEI
NAL_UNIT_RESERVED_41,
NAL_UNIT_RESERVED_42,
NAL_UNIT_RESERVED_43,
NAL_UNIT_RESERVED_44,
NAL_UNIT_RESERVED_45,
NAL_UNIT_RESERVED_46,
NAL_UNIT_RESERVED_47,
NAL_UNIT_UNSPECIFIED_48,
NAL_UNIT_UNSPECIFIED_49,
NAL_UNIT_UNSPECIFIED_50,
NAL_UNIT_UNSPECIFIED_51,
NAL_UNIT_UNSPECIFIED_52,
NAL_UNIT_UNSPECIFIED_53,
NAL_UNIT_UNSPECIFIED_54,
NAL_UNIT_UNSPECIFIED_55,
NAL_UNIT_UNSPECIFIED_56,
NAL_UNIT_UNSPECIFIED_57,
NAL_UNIT_UNSPECIFIED_58,
NAL_UNIT_UNSPECIFIED_59,
NAL_UNIT_UNSPECIFIED_60,
NAL_UNIT_UNSPECIFIED_61,
NAL_UNIT_UNSPECIFIED_62,
NAL_UNIT_UNSPECIFIED_63,
NAL_UNIT_INVALID,
};
/******************************************************************
NALU_HEADER
+---------------+
|0|1|2|3|4|5|6|7|
+-+-+-+-+-+-+-+-+
|F|NRI| Type |
+---------------+
******************************************************************/
typedef struct NALU_HEADER
{
//byte 0
unsigned char TYPE:5;
unsigned char NRI:2;
unsigned char F:1;
} NALU_HEADER; /* 1 byte */
/******************************************************************
NALU_HEADER_H265
+---------------+---------------+
|0|1|2|3|4|5|6|7|0|1|2|3|4|5|6|7|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|F| Type | LayerID | Tid |
+---------------+---------------+
******************************************************************/
typedef struct NALU_HEADER_H265
{
unsigned char buffer[2];
} NALU_HEADER_H265; /* 2 byte */
/******************************************************************
FU_INDICATOR
+---------------+
|0|1|2|3|4|5|6|7|
+-+-+-+-+-+-+-+-+
|F|NRI| Type |
+---------------+
******************************************************************/
typedef struct FU_INDICATOR
{
//byte 0
unsigned char TYPE:5;
unsigned char NRI:2;
unsigned char F:1;
} FU_INDICATOR; /*1 byte */
/******************************************************************
FU_HEADER
+---------------+
|0|1|2|3|4|5|6|7|
+-+-+-+-+-+-+-+-+
|S|E|R| Type |
+---------------+
******************************************************************/
typedef struct FU_HEADER
{
//byte 0
unsigned char TYPE:5;
unsigned char R:1;
unsigned char E:1;
unsigned char S:1;
} FU_HEADER; /* 1 byte */
/******************************************************************
FU_HEADER_H265
+---------------+
|0|1|2|3|4|5|6|7|
+-+-+-+-+-+-+-+-+
|S|E| Type |
+---------------+
******************************************************************/
typedef struct FU_HEADER_H265
{
//byte 0
unsigned char TYPE:6;
unsigned char E:1;
unsigned char S:1;
} FU_HEADER_H265; /* 1 byte */
typedef struct NALU_t
{
int startcodeprefix_len; //! 4 for parameter sets and first slice in picture, 3 for everything else (suggested)
unsigned len; //! Length of the NAL unit (Excluding the start code, which does not belong to the NALU)
unsigned max_size; //! Nal Unit Buffer size
int forbidden_bit; //! should be always FALSE
int nal_reference_idc; //! NALU_PRIORITY_xxxx only for h264
int nal_layer_id; //! NALU_PRIORITY_xxxx only for h265
int nal_tid; //! NALU_PRIORITY_xxxx only for h265
int nal_unit_type; //! NALU_TYPE_xxxx
char *buf; //! contains the first byte followed by the EBSP
unsigned short lost_packets; //! true, if packet loss is detected
} NALU_t;
//在udp传输模式、大分辨下I帧较大，RTP封包需较大vlc才能接收出图
#define UDP_MAX_SIZE (4*1024) //(1399) //(8*1024)
typedef struct RTP_SPLIT_S
{
unsigned char* pu8Buf; //存放所有RTP包的buffer
unsigned int u32BufSize; //buffer的大小
unsigned int u32SegmentCount; //RTP包的个数
unsigned char** ppu8Segment; //每一个RTP包的地址offset，来源是pu8Buf
unsigned int* pU32SegmentSize;//每一个RTP包的大小
} RTP_SPLIT_S;
/*
函 数 名: rtp_amr_alloc
功能描述: RTP封装AMR的音频帧 每个RTP包都包含RTP OVER TCP的交错帧头
输入参数: _pu8Frame 音频帧
_u32FrameSize 帧大小
_pu16SeqNumber RTP包的序号
_u32Timestamp RTP包的时间戳
_Ssrc RTP包的ssrc
输出参数: _pRetRtpSplit 保存RTP封包的结果，需调用rtp_free来释放
返 回 值: 成功返回0,失败返回小于0
*/
int rtp_amr_alloc(unsigned char* _pu8Frame, unsigned int _u32FrameSize,
unsigned short* _pu16SeqNumber, unsigned int _u32Timestamp,
unsigned long _Ssrc, RTP_SPLIT_S* _pRetRtpSplit);
/*
函 数 名: rtp_g711_alloc
功能描述: RTP封装G711的音频帧 每个RTP包都包含RTP OVER TCP的交错帧头
输入参数: _pu8Frame 音频帧
_u32FrameSize 帧大小
_pu16SeqNumber RTP包的序号
_u32Timestamp RTP包的时间戳
_Ssrc RTP包的ssrc
输出参数: _pRetRtpSplit 保存RTP封包的结果，需调用rtp_free来释放
返 回 值: 成功返回0,失败返回小于0
*/
int rtp_g711a_alloc(unsigned char* _pu8Frame, unsigned int _u32FrameSize,
unsigned short* _pu16SeqNumber, unsigned int _u32Timestamp,
unsigned long _Ssrc, RTP_SPLIT_S* _pRetRtpSplit);
/*
函 数 名: rtp_vframe_split
功能描述: h264/h265裸流分割nalu，获取每个nalu的分界点
输入参数: _pu8Frame 视频帧
_u32FrameSize 帧大小
输出参数: 无
返 回 值: 成功返回第二个nalu的分界点,失败返回小于0
*/
int rtp_vframe_split(unsigned char* _pu8Frame, unsigned int _u32FrameSize);
/*
函 数 名: rtp_h264_alloc
功能描述: RTP封装h264的视频帧，每个RTP包都包含RTP OVER TCP的交错帧头
输入参数: _pu8Frame 视频帧
_u32FrameSize 帧大小
_pu16SeqNumber RTP包的序号
_u32Timestamp RTP包的时间戳
输出参数: _pRetRtpSplit 保存RTP封包的结果
返 回 值: 成功返回0,失败返回小于0
*/
int rtp_h264_alloc(unsigned char* _pu8Frame, unsigned int _u32FrameSize,
unsigned short* _pu16SeqNumber, unsigned int _u32Timestamp,
RTP_SPLIT_S* _pRetRtpSplit);
/*
函 数 名: rtp_h265_alloc
功能描述: RTP封装h265的视频帧，每个RTP包都包含RTP OVER TCP的交错帧头
输入参数: _pu8Frame 视频帧
_u32FrameSize 帧大小
_pu16SeqNumber RTP包的序号
_u32Timestamp RTP包的时间戳
输出参数: _pRetRtpSplit 保存RTP封包的结果
返 回 值: 成功返回0,失败返回小于0
*/
int rtp_h265_alloc(unsigned char* _pu8Frame, unsigned int _u32FrameSize,
unsigned short* _pu16SeqNumber, unsigned int _u32Timestamp,
RTP_SPLIT_S* _pRetRtpSplit);
/*
函 数 名: rtp_free
功能描述: 释放RTP包封装的资源
输入参数: _pRetRtpSplit 保存RTP封包的结果
输出参数:
返 回 值: 成功返回0,失败返回小于0
*/
int rtp_free(RTP_SPLIT_S* _pRetRtpSplit);
/*
函 数 名: rtp_payload_get
功能描述: 获取RTP包负荷类型
输入参数: encode_type 编码格式
输出参数:
返 回 值: 成功返回0,失败返回小于0
*/
int rtp_payload_get(const char* encode_type);
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif