payload.h

基于h323协议的软phone

                0,1,2,3,4,5,6,7,8,9,#,*,A,B,C,D.

  the events will be identified by an enumeration.
  */

/* DTMF event name. according to RFC2833
   - the order is very important! do not change the order! */
typedef enum
{
    rtpDtmfEvent_0,
    rtpDtmfEvent_1,
    rtpDtmfEvent_2,
    rtpDtmfEvent_3,
    rtpDtmfEvent_4,
    rtpDtmfEvent_5,
    rtpDtmfEvent_6,
    rtpDtmfEvent_7,
    rtpDtmfEvent_8,
    rtpDtmfEvent_9,
    rtpDtmfEvent_asterisk,
    rtpDtmfEvent_pound,
    rtpDtmfEvent_A,
    rtpDtmfEvent_B,
    rtpDtmfEvent_C,
    rtpDtmfEvent_D,
    rtpDtmfEvent_NoEvent

} rtpDtmfEvent;


/************************************************************************
 * rtpDtmfEventParams
 * This struct holds all the information needed/received for RFC2833
 * packet with event mode
/***********************************************************************/
typedef struct
{
    rtpDtmfEvent event;         /* type of current event received or to-send */
    RvBool       end;           /* the E (end bit) - indicating the last packet of this event */
    RvUint8      volume;        /* volume of current event received or to-send */
    RvUint32     duration;      /* duration of current event received or to-send */

} rtpDtmfEventParams;



/************************************************************************
 * rtpDtmfEventPack
 *
 * purpose: set the payload format, for sending DTMF events inband,
 *          as described in RFC2833, section 3.5.
 *
 * input  : buf - buffer pointer that will be sent
 *          len - length of the buffer.
 *          p - RTP header default parameters.
 *          param - a structure containning the required parameters for DTMF events.
 * output : none
 * return : Non-negative value on success
 *          Negative value on failure
 ************************************************************************/
RVAPI
RvInt32 RVCALLCONV rtpDtmfEventPack(
        IN  void *      buf,
        IN  RvInt32     len,
        IN  rtpParam *  p,
        IN  void     *  param);


/************************************************************************
 * rtpDtmfEventUnpack
 *
 * purpose: evaluates the DTMF events from the received packed.
 *
 * input  : len - length of the buffer.
 * output : buf - the received buffer.
 *          p - RTP header parameters that were received.
 *          param - the received parameters for DTMF events.
 * return : Non-negative value on success
 *          Negative value on failure
 ************************************************************************/
RVAPI
RvInt32 RVCALLCONV rtpDtmfEventUnpack(
        OUT  void *      buf,
        IN   RvInt32     len,
        OUT  rtpParam *  p,
        OUT  void *      param);


/* == Telephony Tones according to RFC2833 == */

/************************************************************************
 * rtpDtmfTonesParams
 * This struct holds all the information needed/received for RFC2833
 * packet with tone mode
/***********************************************************************/
typedef struct
{
    RvUint16     modulation;        /* The modulation frequency, in Hz */
    RvBool       T;                 /* the 'T' bit. True means divide by 3 */
    RvUint8      volume;            /* volume of current tone received or to-send */
    RvUint32     duration;          /* duration of current tone received or to-send */
    RvUint16     *freqList;         /* the list of frequencies to send/received */
    RvUint32     freqListLength;    /* length of the rwquencies list */

} rtpDtmfTonesParams;


/************************************************************************
 * rtpDtmfTonesPack
 *
 * purpose: set the payload format, for sending telephony tones inband,
 *          as described in RFC2833, section 4.4.
 *
 * input  : buf - buffer pointer that will be sent
 *          len - length of the buffer.
 *          p - RTP header default parameters.
 *          param - a structure containning the required parameters for telephony tones.
 * output : none
 * return : Non-negative value on success
 *          Negative value on failure
 *
 * Important: one of the members of the 'rtpDtmfTonesParams' struct(param) is a pointer
 * notes      to an integer array, that symbolizes the frequencies that form the tone.
 *            the array is not limited in size, since a single tone can contain any
 *            number of frequencies. this is the reason there is a member 'freqListLength'
 *            in the struct as well.
 ************************************************************************/
RVAPI
RvInt32 RVCALLCONV rtpDtmfTonesPack(
        IN  void *      buf,
        IN  RvInt32     len,
        IN  rtpParam *  p,
        IN  void     *  param);


/************************************************************************
 * rtpDtmfTonesUnpack
 *
 * purpose: evaluates the telephony tones from the received packed.
 *
 * input  : len - length of the buffer.
 * output : buf - the received buffer.
 *          p - RTP header parameters that were received.
 *          param - the received parameters for telephony tones.
 * return : Non-negative value on success
 *          Negative value on failure
 ************************************************************************/
RVAPI
RvInt32 RVCALLCONV rtpDtmfTonesUnpack(
        OUT  void *      buf,
        IN   RvInt32     len,
        OUT  rtpParam *  p,
        OUT  void *      param);


/************************************************************************
 * rtpDtmfTonesGetByIndex
 *
 * purpose: find the requested frquency in the received message.
 *
 * input  : buf - the received buffer.
 *          index - index of the frequency indside the frequency list.
 *          p - RTP header parameters that were received.
 *          param - the received parameters for telephony tones.
 * output : frequency - The requested frquency
 * return : Non-negative value on success
 *          Negative value on failure
 ************************************************************************/
RVAPI
RvStatus RVCALLCONV rtpDtmfTonesGetByIndex(
        IN   void *      buf,
        IN   RvUint32    index,
        IN   rtpParam *  p,
        IN   void *      param,
        OUT  RvUint16 *  frequency);



/* ========================================================= */
/* ==== Annex Q & H.281 - Far End Camera Control (FECC) ==== */
/* ========================================================= */
/*
    The FECC protocol is designed to function along with H.224, in order to
    allow a multipoint video conferending to be individually controlled from
    any video terminal.
*/

typedef enum
{
    rtpAnnexQProceduresStartAction,
    rtpAnnexQProceduresContinueAction,
    rtpAnnexQProceduresStopAction,
    rtpAnnexQProceduresSelectVideoSource,
    rtpAnnexQProceduresVideoSourceSwitched,
    rtpAnnexQProceduresStoreAsPreset,
    rtpAnnexQProceduresActivatePreset

} rtpAnnexQProcedures;


typedef enum
{
    rtpAnnexQMoveDisable = 0,  /* = 00(binary) */
    rtpAnnexQMoveLeftDownOut = 2, /* = 10(binary) */
    rtpAnnexQMoveRightUpIn = 3  /* = 11(binary) */

} rtpAnnexQMoveCamera;


/************************************************************************
 * rtpAnnexQActions
 * This struct holds the various possible positions for a camera. the user
 * can request to move the camera in several positions concurrently.
/***********************************************************************/
typedef struct
{
    rtpAnnexQMoveCamera pan;
    rtpAnnexQMoveCamera tilt;
    rtpAnnexQMoveCamera zoom;
    rtpAnnexQMoveCamera focus;

} rtpAnnexQActions;


/************************************************************************
 * AnnexQCameraMode
 * This struct holds the user request for camera method of imaging.
/***********************************************************************/
typedef struct
{
    RvBool stillImage;
    RvBool doubleResolutionStillImage;

} AnnexQCameraMode;


/************************************************************************
 * rtpAnnexQParam
 * This struct holds all the information needed/received for H.281
 * packet with FECC capability request.
/***********************************************************************/
typedef struct
{
    rtpAnnexQProcedures procedure;
    rtpAnnexQActions    action;
    RvUint8             timeOut;
    RvUint8             videoSource;
    AnnexQCameraMode    mode;
    RvUint8             preset;

} rtpAnnexQParam;


/************************************************************************
 * rtpAnnexQMessagePack
 *
 * purpose: set the payload format, for sending Far end camera commands inband,
 *          as described in H.281.
 *
 * input  : buf - buffer pointer that will be sent
 *          len - length of the buffer.
 *          p - RTP header default parameters.
 *          param - a structure containning the required parameters for fecc.
 * output : none
 * return : Non-negative value on success
 *          Negative value on failure
 ************************************************************************/
RVAPI
RvInt32 RVCALLCONV rtpAnnexQMessagePack(
        IN  void *      buf,
        IN  RvInt32     len,
        IN  rtpParam *  p,
        IN  void     *  params);


/************************************************************************
 * rtpAnnexQMessageUnpack
 *
 * purpose: evaluates the fecc commands from the received packed.
 *
 * input  : len - length of the buffer.
 * output : buf - the received buffer.
 *          p - RTP header parameters that were received.
 *          param - the received parameters for fecc.
 * return : Non-negative value on success
 *          Negative value on failure
 ************************************************************************/
RVAPI
RvInt32 RVCALLCONV rtpAnnexQMessageUnpack(
        OUT  void *      buf,
        IN   RvInt32     len,
        OUT  rtpParam *  p,
        OUT  void *      params);



#ifdef __cplusplus
}
#endif

#endif  /* __PAYLOAD_H */