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#include "global.h"
#include "util.h"
#include "link.h"
#include "link_rfu.h"
#include "mevent_server.h"
static u32 mevent_receive_func(struct mevent_srv_sub *);
static u32 mevent_send_func(struct mevent_srv_sub *);
u32 mevent_srv_sub_recv(struct mevent_srv_sub * svr)
{
return svr->recvFunc(svr);
}
u32 mevent_srv_sub_send(struct mevent_srv_sub * svr)
{
return svr->sendFunc(svr);
}
void mevent_srv_sub_init(struct mevent_srv_sub * svr, u32 sendPlayerNo, u32 recvPlayerNo)
{
svr->sendPlayerNo = sendPlayerNo;
svr->recvPlayerNo = recvPlayerNo;
svr->seqno = 0;
svr->sendCRC = 0;
svr->sendSize = 0;
svr->sendCounter = 0;
svr->recvCRC = 0;
svr->recvSize = 0;
svr->recvCounter = 0;
svr->sendBfr = NULL;
svr->recvBfr = NULL;
svr->sendFunc = mevent_send_func;
svr->recvFunc = mevent_receive_func;
}
void mevent_srv_sub_init_send(struct mevent_srv_sub * svr, u32 ident, const void * src, u32 size)
{
svr->seqno = 0;
svr->sendIdent = ident;
svr->sendCounter = 0;
svr->sendCRC = 0;
if (size != 0)
svr->sendSize = size;
else
svr->sendSize = ME_SEND_BUF_SIZE;
svr->sendBfr = src;
}
void mevent_srv_sub_init_recv(struct mevent_srv_sub * svr, u32 ident, void * dest)
{
svr->seqno = 0;
svr->recvIdent = ident;
svr->recvCounter = 0;
svr->recvCRC = 0;
svr->recvSize = 0;
svr->recvBfr = dest;
}
static void mevent_recv_block(u32 recv_idx, void * dest, size_t size)
{
memcpy(dest, gBlockRecvBuffer[recv_idx], size);
}
static bool32 mevent_has_received(u32 recv_idx)
{
if ((GetBlockReceivedStatus() >> recv_idx) & 1)
return TRUE;
else
return FALSE;
}
static void mevent_reset_recv(u32 recv_idx)
{
ResetBlockReceivedFlag(recv_idx);
}
static bool32 mevent_receive_func(struct mevent_srv_sub * svr)
{
struct send_recv_header header;
switch (svr->seqno)
{
case 0:
if (mevent_has_received(svr->recvPlayerNo))
{
mevent_recv_block(svr->recvPlayerNo, &header, sizeof(header));
svr->recvSize = header.size;
svr->recvCRC = header.crc;
if (svr->recvSize > ME_SEND_BUF_SIZE)
{
LinkRfu_FatalError();
return FALSE;
}
else if (svr->recvIdent != header.ident)
{
LinkRfu_FatalError();
return FALSE;
}
else
{
svr->recvCounter = 0;
mevent_reset_recv(svr->recvPlayerNo);
++svr->seqno;
}
}
break;
case 1:
if (mevent_has_received(svr->recvPlayerNo))
{
size_t blocksiz = svr->recvCounter * 252;
if (svr->recvSize - blocksiz <= 252)
{
mevent_recv_block(svr->recvPlayerNo, svr->recvBfr + blocksiz, svr->recvSize - blocksiz);
++svr->recvCounter;
++svr->seqno;
}
else
{
mevent_recv_block(svr->recvPlayerNo, svr->recvBfr + blocksiz, 252);
++svr->recvCounter;
}
mevent_reset_recv(svr->recvPlayerNo);
}
break;
case 2:
if (CalcCRC16WithTable(svr->recvBfr, svr->recvSize) != svr->recvCRC)
{
LinkRfu_FatalError();
return FALSE;
}
else
{
svr->seqno = 0;
return TRUE;
}
break;
}
return FALSE;
}
static bool32 mevent_send_func(struct mevent_srv_sub * svr)
{
struct send_recv_header header;
switch (svr->seqno)
{
case 0:
if (IsLinkTaskFinished())
{
header.ident = svr->sendIdent;
header.size = svr->sendSize;
header.crc = CalcCRC16WithTable(svr->sendBfr, svr->sendSize);
svr->sendCRC = header.crc;
svr->sendCounter = 0;
SendBlock(0, &header, sizeof(header));
++svr->seqno;
}
break;
case 1:
if (IsLinkTaskFinished())
{
if (mevent_has_received(svr->sendPlayerNo))
{
size_t blocksiz;
mevent_reset_recv(svr->sendPlayerNo);
blocksiz = 252 * svr->sendCounter;
if (svr->sendSize - blocksiz <= 252)
{
SendBlock(0, svr->sendBfr + blocksiz, svr->sendSize - blocksiz);
++svr->sendCounter;
++svr->seqno;
}
else
{
SendBlock(0, svr->sendBfr + blocksiz, 252);
++svr->sendCounter;
}
}
}
break;
case 2:
if (IsLinkTaskFinished())
{
if (CalcCRC16WithTable(svr->sendBfr, svr->sendSize) != svr->sendCRC)
LinkRfu_FatalError();
else
++svr->seqno;
}
break;
case 3:
if (mevent_has_received(svr->sendPlayerNo))
{
mevent_reset_recv(svr->sendPlayerNo);
svr->seqno = 0;
return TRUE;
}
break;
}
return FALSE;
}
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