193 lines
4.4 KiB
C
193 lines
4.4 KiB
C
//
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// Share 2.0 Interface
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//
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#ifndef _H_S20
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#define _H_S20
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BOOL S20_Init(void);
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void S20_Term(void);
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//
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// We can send to one person or broadcast to everyone listening to the
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// app sharing channel. The userID for one person is the mcsID, we get it
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// in S20 create/join/respond packets along with name + caps.
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//
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PS20DATAPACKET S20_AllocDataPkt(UINT streamID, UINT_PTR nodeID, UINT_PTR len);
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void S20_FreeDataPkt(PS20DATAPACKET pPacket);
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void S20_SendDataPkt(UINT streamID, UINT_PTR nodeID, PS20DATAPACKET pPacket);
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//
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// API FUNCTION: S20_UTEventProc
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//
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// DESCRIPTION:
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//
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// Handles NET_EVENTS
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//
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// PARAMETERS: standard UT event handler
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//
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// RETURNS: standard UT event handler
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//
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BOOL CALLBACK S20_UTEventProc(LPVOID userData, UINT event, UINT_PTR data1, UINT_PTR data2);
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//
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//
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// CONSTANTS
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//
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//
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//
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// States
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//
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typedef enum
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{
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S20_TERM = 0,
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S20_INIT,
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S20_ATTACH_PEND,
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S20_JOIN_PEND,
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S20_NO_SHARE,
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S20_SHARE_PEND,
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S20_SHARE_STARTING,
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S20_IN_SHARE,
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S20_NUM_STATES
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}
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S20_STATE;
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#define S20_MAX_QUEUED_CONTROL_PACKETS 20
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//
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// These pool sizes and latencies control how DC Share T120 flow control
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// behaves. They are tuned for performance so you had better understand
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// what you are doing if you change them!
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//
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// For example, can you explain why any setting other than 0 for the medium
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// priority will break DC Share? If not then go and read/understand
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// amgcflo.c and then look at how DC-Share will interact with it.
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//
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// To summarize:
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//
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// We don't control the top priority or medium priority pools because they
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// carry non-spoilable data that must therefore flow at a lower bandwidth
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// than the transport. In fact, applying back pressure to these streams
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// will cause DC-Share to fail in some cases.
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//
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// Low priority is where flow control really takes effect, since we want
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// the pipe to open right up (to 200K per ping) over fast transports but
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// to throttle back (to 1K per second possibly!) over slow transports.
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//
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//
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#define S20_LATENCY_TOP_PRIORITY 0
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#define S20_LATENCY_HIGH_PRIORITY 0
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#define S20_LATENCY_MEDIUM_PRIORITY 0
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#define S20_LATENCY_LOW_PRIORITY 7000
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#define S20_SIZE_TOP_PRIORITY 0
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#define S20_SIZE_HIGH_PRIORITY 0
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#define S20_SIZE_MEDIUM_PRIORITY 0
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#define S20_SIZE_LOW_PRIORITY 99000
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//
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//
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// MACROS
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//
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//
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#define S20_GET_CREATOR(A) ((TSHR_UINT16)(A & 0xFFFF))
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//
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//
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// TYPEDEFS
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//
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//
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typedef struct tagS20CONTROLPACKETQENTRY
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{
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UINT what;
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TSHR_UINT32 correlator;
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UINT who;
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UINT priority;
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}
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S20CONTROLPACKETQENTRY;
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typedef S20CONTROLPACKETQENTRY * PS20CONTROLPACKETQENTRY;
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//
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//
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// PROTOTYPES
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//
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//
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BOOL S20CreateOrJoinShare(
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UINT what,
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UINT_PTR callID);
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void S20LeaveOrEndShare(void);
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UINT S20MakeControlPacket(
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UINT what,
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UINT correlator,
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UINT who,
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PS20PACKETHEADER * ppPacket,
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LPUINT pLength,
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UINT priority);
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UINT S20FlushSendOrQueueControlPacket(
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UINT what,
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UINT correlator,
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UINT who,
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UINT priority);
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UINT S20FlushAndSendControlPacket(
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UINT what,
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UINT correlator,
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UINT who,
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UINT priority);
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UINT S20SendControlPacket(
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PS20PACKETHEADER pPacket,
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UINT length,
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UINT priority);
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UINT S20SendQueuedControlPackets(void);
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void S20AttachConfirm(NET_UID userID, NET_RESULT result, UINT callID);
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void S20DetachIndication(NET_UID userID, UINT callID);
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void S20LeaveIndication(NET_CHANNEL_ID channelID, UINT callID);
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void S20JoinConfirm(PNET_JOIN_CNF_EVENT pEvent);
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void S20SendIndication(PNET_SEND_IND_EVENT pEvent);
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void S20Flow(UINT priority, UINT newBufferSize);
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void S20CreateMsg(PS20CREATEPACKET pS20Packet);
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void S20JoinMsg(PS20JOINPACKET pS20Packet);
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void S20RespondMsg(PS20RESPONDPACKET pS20Packet);
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void S20DeleteMsg(PS20DELETEPACKET pS20Packet);
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void S20LeaveMsg(PS20LEAVEPACKET pS20Packet);
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void S20EndMsg(PS20ENDPACKET pS20Packet);
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void S20DataMsg(PS20DATAPACKET pS20Packet);
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void S20CollisionMsg(PS20COLLISIONPACKET pS20Packet);
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BOOL S20MaybeAddNewParty(MCSID mcsID,
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UINT lenCaps,
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UINT lenName,
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LPBYTE pData);
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void S20MaybeIssuePersonDelete(MCSID mcsID);
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UINT S20NewCorrelator(void);
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NET_PRIORITY S20StreamToS20Priority(UINT streamID);
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#endif // _H_S20
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