// Transmits an entire frame of imagery to the client
int sendFullFrame(SOCKET &clientSocket) {
int status = 0;
FIBITMAP *fiImage;
FIMEMORY *fiBuffer;
// Signal that a new frame is required and wait for frame
InterlockedExchange( &g_lRequestFlag, TRUE );
g_pRequestEvent->waitFor();
// Enter critical section for frame buffer from UT2004
// and copy new raw image to local buffer
EnterCriticalSection( &g_CriticalSection );
{
fiImage = FreeImage_ConvertTo24Bits(g_fiImage);
}
LeaveCriticalSection( &g_CriticalSection );
// Create memory reference
fiBuffer = FreeImage_OpenMemory();
// Convert a raw frame to a useful image
status = writeFrame( fiBuffer, fiImage, g_iImageType );
if (status != 1) status = 0; // TODO: handle error here
// Transmit frame over socket
status = transmitFrame( fiBuffer, clientSocket, g_iImageType );
// Delete memory references
FreeImage_Unload( fiImage );
FreeImage_CloseMemory( fiBuffer );
return status;
}
//--------------------------------------------------------------
void GenericClientManager::update() {
//check for serverMessages
if (useServer) {
this->checkServerMessages();
}
if (this->newFps!=this->appFps) {
this->appFps=this->newFps;
ofSetFrameRate(this->appFps);
}
this->specific->update();
if (transmitEnabled && useServer) {
transmitFrame();
}
}
/*==============================================================================
** Function...: channelAccess
** Return.....: GLOB_RET
** Description: dataLink
** Created....: 24.08.2012 by Achuthan
** Modified...: dd.mm.yyyy by nn
==============================================================================*/
GLOB_RET channelAccess(frame tempFrame, unsigned char retCode)
{
GLOB_RET ret = GLOB_FAILURE;
switch (retCode)
{
//Wait DIFS period, if there is CD then freez the coutner
case WAIT_DIFS:
START_DIFS_TIMER;
ret = DATA_LINK_DIFS_WAIT_OK;
while(difsTimer<DIFS)
{
if(CD)
{
while(CD)
{
//copyPacketIBtoKB();
} //
START_DIFS_TIMER;
}
}
break;
case PERFORM_BACKOFF:
if(backOff())
{
//if CD then return:
return DATA_LINK_CARRIER_DETECTED;
}
else
{
//else no CD then do the transmit
ret = DATA_LINK_BACKOFF_OK;
}
break;
case SEND_PAY:
// if it is NC we set the NC flag
if(tempFrame.payload.isncHeader.codedPacket == CODING)
{
tempFrame.type = NC_PAY;
}
// else we set the normal flag
else
{
tempFrame.type = PAY;
}
// signal the Driver to clock in and tx the payload
tempFrame.payload.isncHeader.optimalCWmin_A = Log.nodeCWminUpdate_A;
tempFrame.payload.isncHeader.optimalCWmin_B = Log.nodeCWminUpdate_B;
Log.avrCWmin_R2A = Log.avrCWmin_R2A + Log.nodeCWminUpdate_A;
Log.avrCWmin_R2B = Log.avrCWmin_R2B + Log.nodeCWminUpdate_B;
ret = transmitFrame(tempFrame, PACKET_SIZE);
break;
case WAIT_FOR_ACK:
START_ACK_TIMER;
//Block untill ACK is received or timeout
while( ackTimer < ACK_TIMEOUT && gotACK == NO );
// ACK received
if(gotACK)
{
ret = DATA_LINK_GOT_ACK;
Log.ackRcv_cnt++;
}
else
{
ret = DATA_LINK_ACK_TIMEOUT;
}
break;
default:
ret = GLOB_ERROR_INVALID_PARAM;
break;
}
return ret;
}
