本文整理汇总了C++中typename_istreamlist::iterator::read_pointer方法的典型用法代码示例。如果您正苦于以下问题：C++ iterator::read_pointer方法的具体用法？C++ iterator::read_pointer怎么用？C++ iterator::read_pointer使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类typename_istreamlist::iterator的用法示例。
在下文中一共展示了iterator::read_pointer方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: while
//.........这里部分代码省略.........
return -1;
}
// reset looping variables
int ritems = 0;
int nitems = 0;
// reset caching vectors
_output_items.clear();
_input_items.clear();
_ninput_items.clear();
istream = istreams.begin();
for ( int idx=0 ; istream != istreams.end(); idx++, istream++ ) {
// check if the stream is ready
if ( !_input_ready[idx] ) {
continue;
}
// get number of items remaining
try {
ritems = gr_sptr->nitems_read( idx );
} catch(...){
// something bad has happened, we are missing an input stream
LOG_ERROR( randomizer_base, "MISSING INPUT STREAM FOR GR BLOCK, STREAM ID:" << istream->streamID );
return -2;
}
nitems = istream->nitems() - ritems;
LOG_TRACE( randomizer_base, " ISTREAM: IDX:" << idx << " ITEMS AVAIL/READ/REQ " << nitems << "/"
<< ritems << "/" << _ninput_items_required[idx] );
if ( nitems >= _ninput_items_required[idx] && nitems > 0 ) {
//remove eos checks ...if ( nitems < _ninput_items_required[idx] ) nitems=0;
_ninput_items.push_back( nitems );
_input_items.push_back( (const void *) (istream->read_pointer(ritems)) );
}
}
//
// setup output buffer vector based on noutput..
//
ostream = ostreams.begin();
for( ; ostream != ostreams.end(); ostream++ ) {
ostream->resize(noutput_items);
_output_items.push_back((void*)(ostream->write_pointer()) );
}
nout=0;
if ( _input_items.size() != 0 && serviceThread->threadRunning() ) {
LOG_TRACE( randomizer_base, " CALLING WORK.....N_OUT:" << noutput_items << " N_IN:" << nitems
<< " ISTREAMS:" << _input_items.size() << " OSTREAMS:" << _output_items.size());
nout = gr_sptr->general_work( noutput_items, _ninput_items, _input_items, _output_items);
LOG_TRACE( randomizer_base, "RETURN WORK ..... N_OUT:" << nout);
}
// check for stop condition from work method
if ( nout < gr_block::WORK_DONE ) {
LOG_WARN( randomizer_base, "WORK RETURNED STOP CONDITION..." << nout );
nout=0;
eos = true;
}
}
if (nout != 0 or eos ) {
noutput_items = nout;
LOG_TRACE( randomizer_base, " WORK RETURNED: NOUT : " << nout << " EOS:" << eos);
ostream = ostreams.begin();示例2: while
//.........这里部分代码省略.........
while ( !dataReady && noutput_items >= outMultiple ) {
//
// ask the block how much input they need to produce noutput_items...
//
gr_sptr->forecast(noutput_items, _ninput_items_required);
LOG_TRACE( file_descriptor_sink_i_base, "--> FORECAST IN/OUT " << _ninput_items_required[0] << "/" << noutput_items );
istream = istreams.begin();
uint32_t dr_cnt=0;
for ( int idx=0 ; noutput_items > 0 && istream != istreams.end(); idx++, istream++ ) {
// check if buffer has enough elements
_input_ready[idx] = false;
if ( istream->nitems() >= (uint64_t)_ninput_items_required[idx] ) {
_input_ready[idx] = true;
dr_cnt++;
}
LOG_TRACE( file_descriptor_sink_i_base, "ISTREAM DATACHECK NELMS/NITEMS/REQ/READY:" <<
istream->nelems() << "/" << istream->nitems() << "/" <<
_ninput_items_required[idx] << "/" << _input_ready[idx]);
}
if ( dr_cnt < istreams.size() ) {
if ( outMultiple > 1 ) {
noutput_items -= outMultiple;
} else {
noutput_items /= 2;
}
} else {
dataReady = true;
}
LOG_TRACE( file_descriptor_sink_i_base, " TRIM FORECAST NOUTPUT/READY " << noutput_items << "/" << dataReady );
}
// check if data is ready...
if ( !dataReady ) {
LOG_TRACE( file_descriptor_sink_i_base, "DATA CHECK - NOT ENOUGH DATA AVAIL/REQ:"
<< _istreams[0].nitems() << "/" << _ninput_items_required[0] );
return -1;
}
// reset looping variables
int ritems = 0;
int nitems = 0;
// reset caching vectors
_output_items.clear();
_input_items.clear();
_ninput_items.clear();
istream = istreams.begin();
for ( int idx=0 ; istream != istreams.end(); idx++, istream++ ) {
// check if the stream is ready
if ( !_input_ready[idx] ) continue;
// get number of items remaining
try {
ritems = gr_sptr->nitems_read( idx );
} catch(...){
// something bad has happened, we are missing an input stream
LOG_ERROR( file_descriptor_sink_i_base, "MISSING INPUT STREAM FOR GR BLOCK, STREAM ID:" << istream->streamID );
return -2;
}
nitems = istream->nitems() - ritems;
LOG_TRACE( file_descriptor_sink_i_base, " ISTREAM: IDX:" << idx << " ITEMS AVAIL/READ/REQ " << nitems << "/"
<< ritems << "/" << _ninput_items_required[idx] );
if ( nitems >= _ninput_items_required[idx] && nitems > 0 ) {
//remove eos checks ...if ( nitems < _ninput_items_required[idx] ) nitems=0;
_ninput_items.push_back( nitems );
_input_items.push_back( (const void *) (istream->read_pointer(ritems)) );
}
}
nout=0;
if ( _input_items.size() != 0 && serviceThread->threadRunning() ) {
LOG_TRACE( file_descriptor_sink_i_base, " CALLING WORK.....N_OUT:" << noutput_items <<
" N_IN:" << nitems << " ISTREAMS:" << _input_items.size() <<
" OSTREAMS:" << _output_items.size());
nout = gr_sptr->general_work( noutput_items, _ninput_items, _input_items, _output_items);
// sink/analyzer patterns do not return items, so consume_each is not called in Gnu Radio BLOCK
if ( nout == 0 ) {
gr_sptr->consume_each(nitems);
}
LOG_TRACE( file_descriptor_sink_i_base, "RETURN WORK ..... N_OUT:" << nout);
}
// check for stop condition from work method
if ( nout < gr_block::WORK_DONE ) {
LOG_WARN( file_descriptor_sink_i_base, "WORK RETURNED STOP CONDITION..." << nout );
nout=0;
eos = true;
}
}
return nout;
}