template < typename IN_PORT_TYPE, typename OUT_PORT_TYPE > int copy_octet_base::_transformerServiceFunction( typename std::vector< gr_istream< IN_PORT_TYPE > > &istreams ,
typename std::vector< gr_ostream< OUT_PORT_TYPE > > &ostreams )
{
typedef typename std::vector< gr_istream< IN_PORT_TYPE > > _IStreamList;
typedef typename std::vector< gr_ostream< OUT_PORT_TYPE > > _OStreamList;
boost::mutex::scoped_lock lock(serviceThreadLock);
if ( validGRBlock() == false ) {
// create our processing block, and setup property notifiers
createBlock();
// create input/output port-stream mapping
setupIOMappings();
LOG_DEBUG( copy_octet_base, " FINISHED BUILDING GNU RADIO BLOCK");
}
//process any Stream ID changes this could affect number of io streams
processStreamIdChanges();
if ( !validGRBlock() || istreams.size() == 0 || ostreams.size() == 0 ) {
LOG_WARN(copy_octet_base, "NO STREAMS ATTACHED TO BLOCK..." );
return NOOP;
}
_input_ready.resize( istreams.size() );
_ninput_items_required.resize( istreams.size() );
_ninput_items.resize( istreams.size() );
_input_items.resize( istreams.size() );
_output_items.resize( ostreams.size() );
//
// RESOLVE: need to look at forecast strategy,
// 1) see how many read items are necessary for N number of outputs
// 2) read input data and see how much output we can produce
//
//
// Grab available data from input streams
//
typename _OStreamList::iterator ostream;
typename _IStreamList::iterator istream = istreams.begin();
int nitems=0;
for ( int idx=0 ; istream != istreams.end() && serviceThread->threadRunning() ; idx++, istream++ ) {
// note this a blocking read that can cause deadlocks
nitems = istream->read();
if ( istream->overrun() ) {
LOG_WARN( copy_octet_base, " NOT KEEPING UP WITH STREAM ID:" << istream->streamID );
}
if ( istream->sriChanged() ) {
// RESOLVE - need to look at how SRI changes can affect Gnu Radio BLOCK state
LOG_DEBUG( copy_octet_base, "SRI CHANGED, STREAMD IDX/ID: "
<< idx << "/" << istream->pkt->streamID );
setOutputStreamSRI( idx, istream->pkt->SRI );
}
}
LOG_TRACE( copy_octet_base, "READ NITEMS: " << nitems );
if ( nitems <= 0 && !_istreams[0].eos() ) return NOOP;
bool exitServiceFunction = false;
bool eos = false;
int nout = 0;
while ( nout > -1 && !exitServiceFunction && serviceThread->threadRunning() ) {
eos = false;
nout = _forecastAndProcess( eos, istreams, ostreams );
if ( nout > -1 ) {
// we chunked on data so move read pointer..
istream = istreams.begin();
for ( ; istream != istreams.end(); istream++ ) {
int idx=std::distance( istreams.begin(), istream );
// if we processed data for this stream
if ( _input_ready[idx] ) {
size_t nitems = 0;
try {
nitems = gr_sptr->nitems_read( idx );
}
catch(...){}
istream->consume( nitems );
LOG_TRACE( copy_octet_base, " CONSUME READ DATA ITEMS/REMAIN " << nitems << "/" << istream->nitems());
}
}
gr_sptr->reset_read_index();
}
// check for not enough data return
if ( nout == -1 ) {
// check for end of stream
istream = istreams.begin();
for ( ; istream != istreams.end() ; istream++) if ( istream->eos() ) eos=true;
if ( eos ) {
LOG_TRACE( copy_octet_base, " DATA NOT READY, EOS:" << eos );
_forecastAndProcess( eos, istreams, ostreams);
}
exitServiceFunction = true;
}
}
if ( eos ) {
istream = istreams.begin();
for ( ; istream != istreams.end() ; ) {
int idx=std::distance( istreams.begin(), istream );
if ( istream->eos() || eos == true ) {
LOG_DEBUG( copy_octet_base, " CLOSING INPUT STREAM IDX:" << idx );
istream->close();
//
// if we are variable input list of input streams and fixed output...... humm
//
if ( gr_sptr->get_max_input_streams() == -1 ) {
LOG_DEBUG( copy_octet_base, " REMOVE VARIABLE INPUT STREAM IDX:" << idx );
istream=istreams.erase( istream );
gr_sptr->remove_read_index( idx );
// if output is variable then close the corresponding output stream
if ( gr_sptr->get_max_output_streams() == -1 && outPorts.size() == 1 ) {
ostream = ostreams.begin();
for ( int i=0; ostream != ostreams.end(); i++, ostream++) {
if ( i == idx ) {
LOG_DEBUG( copy_octet_base, " REMOVE VARIABLE OUTPUT STREAM IDX:" << idx );
ostream=ostreams.erase(ostream);
break;
}
}
}
}
else {
istream++;
}
}
}
// close remaining output streams
ostream = ostreams.begin();
for ( ; eos && ostream != ostreams.end(); ostream++ ) ostream->close();
}
//
// set the read pointers of the GNU Radio Block to start at the beginning of the
// supplied buffers
//
gr_sptr->reset_read_index();
LOG_TRACE( copy_octet_base, " END OF TRANSFORM SERVICE FUNCTION....." << noutput_items );
if ( nout == -1 && eos == false )
return NOOP;
else
return NORMAL;
}
