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/*
 * Copyright (C) 1996 Universidade de Lisboa
 * 
 * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
 *
 * This software may be used and distributed according to the terms of 
 * the GNU Public License, incorporated herein by reference.
 */
 
/*        
 *        CAPI encode/decode prototypes and defines
 */
 
#ifndef CAPI_H
#define CAPI_H
 
 
#define REQ_CAUSE         0x01
#define REQ_DISPLAY       0x04
#define REQ_USER_TO_USER  0x08 
 
#define AppInfoMask  REQ_CAUSE|REQ_DISPLAY|REQ_USER_TO_USER 
 
/* Connection Setup */
extern int capi_conn_req(const char * calledPN, struct sk_buff **buf,
			 int proto);
extern int capi_decode_conn_conf(struct pcbit_chan * chan, struct sk_buff *skb,
				 int *complete); 
 
extern int capi_decode_conn_ind(struct pcbit_chan * chan, struct sk_buff *skb,
				struct callb_data *info);
extern int capi_conn_resp(struct pcbit_chan* chan, struct sk_buff **skb);
 
extern int capi_conn_active_req(struct pcbit_chan* chan, struct sk_buff **skb);
extern int capi_decode_conn_actv_conf(struct pcbit_chan * chan, 
				      struct sk_buff *skb);
 
extern int capi_decode_conn_actv_ind(struct pcbit_chan * chan, 
				     struct sk_buff *skb);
extern int capi_conn_active_resp(struct pcbit_chan* chan, 
				 struct sk_buff **skb);
 
/* Data */
extern int capi_select_proto_req(struct pcbit_chan *chan, struct sk_buff **skb,
				 int outgoing);
extern int capi_decode_sel_proto_conf(struct pcbit_chan *chan, 
				      struct sk_buff *skb);
 
extern int capi_activate_transp_req(struct pcbit_chan *chan, 
				    struct sk_buff **skb);
extern int capi_decode_actv_trans_conf(struct pcbit_chan *chan, 
				       struct sk_buff *skb);
 
extern int capi_tdata_req(struct pcbit_chan* chan, struct sk_buff *skb);
extern int capi_tdata_resp(struct pcbit_chan *chan, struct sk_buff ** skb);
 
/* Connection Termination */
extern int capi_disc_req(ushort callref, struct sk_buff **skb, u_char cause);
extern int capi_decode_disc_conf(struct pcbit_chan *chan, struct sk_buff *skb);
 
extern int capi_decode_disc_ind(struct pcbit_chan *chan, struct sk_buff *skb);
extern int capi_disc_resp(struct pcbit_chan *chan, struct sk_buff **skb);
 
#ifdef DEBUG
extern int capi_decode_debug_188(u_char *hdr, ushort hdrlen);
#endif
 
extern __inline__ 
struct pcbit_chan * 
capi_channel(struct pcbit_dev *dev, struct sk_buff *skb)
{
	ushort callref;
 
	callref = *((ushort*) skb->data);
	skb_pull(skb, 2);
 
	if (dev->b1->callref == callref)
		return dev->b1;
	else if (dev->b2->callref == callref)
		return dev->b2;
 
	return NULL;
}
 
#endif