//
//?class?CH264_RTP_PACK?start

class?CH264_RTP_PACK
{
	#define?RTP_VERSION?2

	typedef?struct?NAL_msg_s?
	{
		bool?eoframe?;
		unsigned?char?type;		//?NAL?type
		unsigned?char?*start;	//?pointer?to?first?location?in?the?send?buffer
		unsigned?char?*end;	//?pointer?to?last?location?in?send?buffer
		unsigned?long?size?;
	}?NAL_MSG_t;

	typedef?struct?
	{
		//LITTLE_ENDIAN
		unsigned?short???cc:4;		/*?CSRC?count?????????????????*/
		unsigned?short???x:1;		/*?header?extension?flag??????*/
		unsigned?short???p:1;		/*?padding?flag???????????????*/
		unsigned?short???v:2;		/*?packet?type????????????????*/
		unsigned?short???pt:7;		/*?payload?type???????????????*/
		unsigned?short???m:1;		/*?marker?bit?????????????????*/

		unsigned?short????seq;		/*?sequence?number????????????*/
		unsigned?long?????ts;		/*?timestamp??????????????????*/
		unsigned?long?????ssrc;		/*?synchronization?source?????*/
	}?rtp_hdr_t;

	typedef?struct?tagRTP_INFO
	{
		NAL_MSG_t	nal;	????//?NAL?information
		rtp_hdr_t	rtp_hdr;????//?RTP?header?is?assembled?here
		int?hdr_len;			//?length?of?RTP?header

		unsigned?char?*pRTP;????//?pointer?to?where?RTP?packet?has?beem?assembled
		unsigned?char?*start;	//?pointer?to?start?of?payload
		unsigned?char?*end;		//?pointer?to?end?of?payload

		unsigned?int?s_bit;		//?bit?in?the?FU?header
		unsigned?int?e_bit;		//?bit?in?the?FU?header
		bool?FU_flag;		//?fragmented?NAL?Unit?flag
	}?RTP_INFO;

public:
	CH264_RTP_PACK（unsigned?long?H264SSRC?unsigned?char?H264PAYLOADTYPE=96?unsigned?short?MAXRTPPACKSIZE=1472?）
	{
		m_MAXRTPPACKSIZE?=?MAXRTPPACKSIZE?;
		if?（?m_MAXRTPPACKSIZE?>?10000?）
		{
			m_MAXRTPPACKSIZE?=?10000?;
		}
		if?（?m_MAXRTPPACKSIZE?		{
			m_MAXRTPPACKSIZE?=?50?;
		}
		
		memset?（?&m_RTP_Info?0?sizeof（m_RTP_Info）?）?;

		m_RTP_Info.rtp_hdr.pt?=?H264PAYLOADTYPE?;
		m_RTP_Info.rtp_hdr.ssrc?=?H264SSRC?;
		m_RTP_Info.rtp_hdr.v?=?RTP_VERSION?;

		m_RTP_Info.rtp_hdr.seq?=?0?;
	}

	~CH264_RTP_PACK（void）
	{
	}

	//傳入Set的數(shù)據(jù)必須是一個完整的NAL起始碼為0x00000001。
	//起始碼之前至少預(yù)留10個字節(jié)，以避免內(nèi)存COPY操作。
	//打包完成后，原緩沖區(qū)內(nèi)的數(shù)據(jù)被破壞。
	bool?Set?（?unsigned?char?*NAL_Buf?unsigned?long?NAL_Size?unsigned?long?Time_Stamp?bool?End_Of_frame?）
	{
		unsigned?long?startcode?=?StartCode（NAL_Buf）?;
		
		if?（?startcode?!=?0x01000000?）
		{
			return?false?;
		}

		int?type?=?NAL_Buf[4]?&?0x1f?;
		if?（?type??12?）
		{
			return?false?;
		}

		m_RTP_Info.nal.start?=?NAL_Buf?;
		m_RTP_Info.nal.size?=?NAL_Size?;
		m_RTP_Info.nal.eoframe?=?End_Of_frame?;
		m_RTP_Info.nal.type?=?m_RTP_Info.nal.start[4]?;
		m_RTP_Info.nal.end?=?m_RTP_Info.nal.start?+?m_RTP_Info.nal.size?;

		m_RTP_Info.rtp_hdr.ts?=?Time_Stamp?;

		m_RTP_Info.nal.start?+=?4?;	//?skip?the?syncword
									
		if?（?（m_RTP_Info.nal.size?+?7）?>?m_MAXRTPPACKSIZE?）
		{
			m_RTP_Info.FU_flag?=?true?;
			m_RTP_Info.s_bit?=?1?;
			m_RTP_Info.e_bit?=?0?;

			m_RTP_Info.nal.start?+=?1?;	//?skip?NAL?header