/*
 * rtp.h  --  RTP header file (RFC 1890)
 */

#include <sys/types.h>
#include "sysdep.h"

#define RTP_SVM_RAW 40
/*
 * The type definitions below are valid for 32-bit architectures and
 * may have to be adjusted for 16- or 64-bit architectures.
 */
typedef unsigned char  u_int8;
typedef unsigned short u_int16;
typedef unsigned int   u_int32;
typedef          short int16;

/*
 * Current protocol version.
 */
#define RTP_VERSION    2

#define RTP_SEQ_MOD (1<<16)
#define RTP_MAX_SDES 255      /* maximum text length for SDES */


/*
 * Largest (user-level) packet size generated by our rtp applications.
 * Individual video formats may use smaller mtu's.
 */
#define PACKET_SIZE 1024
#define RTP_MTU 1024
#define MAXHDR 24
#define RTP_HDR_SZ 12
#define TOTHDR 20
/*
 *
 *
 *    The RTP header has the following format:
 *
 *  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             |
 * |                             ....                              |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 * RTP data header
 */

typedef struct {
#if RTP_BIG_ENDIAN
    unsigned int version:2;   /* protocol version */
    unsigned int p:1;         /* padding flag */
    unsigned int x:1;         /* header extension flag */
    unsigned int cc:4;        /* CSRC count */
    unsigned int m:1;         /* marker bit */
    unsigned int pt:7;        /* payload type */
#elif RTP_LITTLE_ENDIAN
    unsigned int cc:4;        /* CSRC count */
    unsigned int x:1;         /* header extension flag */
    unsigned int p:1;         /* padding flag */
    unsigned int version:2;   /* protocol version */
    unsigned int pt:7;        /* payload type */
    unsigned int m:1;         /* marker bit */
#else
#error Define one of RTP_LITTLE_ENDIAN or RTP_BIG_ENDIAN
#endif

    unsigned int seq:16;      /* sequence number */
    u_int32 ts;               /* timestamp */
    u_int32 ssrc;             /* synchronization source */
} rtp_hdr_t;


/*
 * CellB encapsulation.
 *
 * Motion JPEG encapsulation.
 *
 * 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
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |                                frag offset                    |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |      x        |       y       |     Width     |     Height    |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * 
 * Type = Index into a table of predefined JPEG parameters
 * Width = Width of input in 8-pixel blocks
 * Height = Height of input in 8-pixel blocks
 * Q = Quality factor (0-100 = std, >100 = custom)
 * Frag offset = The byte offset into the frame for the data in 
 * this packet
 */
struct jpeghdr {
  //        unsigned int type:8;  
  //    int off:24;              
	u_int32 off;
        u_int8 x;
	u_int8 y;
	u_int8 width;
	u_int8 height;
	/* cells */
};