#ifdef __cplusplusextern "C" {#endif/*
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*/
typedef enum{    cmChannelStateDialtone,    cmChannelStateRingBack,    cmChannelStateConnected,    cmChannelStateDisconnected,    cmChannelStateIdle,    cmChannelStateOffering,    cmChannelStateRequestClose /* Remote terminal requests closing of an outgoing channel */} cmChannelState_e;RVAPIint CALLCONV cmChannelOpenMulticast(				    /* open a channel with multicast address */		IN      HCHAN               hsChan,		IN      char*               channelName,		IN      HCHAN               hsChanSameSession,		IN      HCHAN               hsChanAssociated,		IN      UINT32              rate);/* for incoming channel: it requests the remote terminal to close its outgoing channel */RVAPIint CALLCONV cmChannelDrop(		IN      HCHAN               hsChan);/* upon cmChannelStateRequestClose state notification: The user may reject the close    request by calling cmChannelDropReject(). Calling cmChannelDrop() causes the channel   to be closed.   */RVAPIint CALLCONV cmChannelDropReject(				 /* reject close request on outgoing channel */		IN      HCHAN               hsChan);/* -- Multipoint commands *//* When the conference becomes active, the master (MC) terminal shall call cmCallDeclareMC() to   indicate the new conference status. */RVAPI int CALLCONV cmCallDeclareMC(			     /* declare this terminal to be the MC of the call */		IN      HCALL               hsCall		);typedef struct {  UINT8 mcuNumber;  UINT8 terminalNumber;} cmTerminalLabel;typedef struct {  UINT32 ip;  UINT16 port;  BOOL isMulticast; /* TRUE if multicast ip */} cmIpAddress;typedef struct {  int sessionId; /* use 0 for stack decision */  int associatedSessionId;  cmTerminalLabel terminalLabel;  char *sessionDescription;  char *channelName;  INT32 channelDataTypeHandle; /* HVT node id of channel data type */  cmCapDataType type;  cmIpAddress rtpAddress;  cmIpAddress rtcpAddress;} cmChannelStruct;/* The master (MC) terminal shall use cmCallSetChannels() to force the remote terminal to open   the indicated channels for transmit. */RVAPI int CALLCONV cmCallSetChannels(			     /* As an Active MC, set transfer channels for remote terminal */		IN      HCALL               hsCall,		IN      cmChannelStruct     channelSet[]		);#ifdef __cplusplus}              #endif