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//
// Copyright 2012 Josh Blum
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with io_sig program. If not, see <http://www.gnu.org/licenses/>.
#ifndef INCLUDED_GNURADIO_IO_SIGNATURE_HPP
#define INCLUDED_GNURADIO_IO_SIGNATURE_HPP
#include <vector>
#include <stdexcept>
namespace gnuradio
{
/*!
* An IO signature describes the input or output specifications
* for the streaming input or output ports of a block.
* Properties are a maximum and minimum number of ports,
* and an item size in bytes for each port.
*/
struct IOSignature : std::vector<int>
{
static const int IO_INFINITE = -1;
//! Create an empty signature with infinite IO
IOSignature(void)
{
this->set_min_streams(IO_INFINITE);
this->set_max_streams(IO_INFINITE);
}
//! Create a signature with the specified min and max streams
IOSignature(const int min_streams, const int max_streams)
{
if (min_streams > max_streams and max_streams != IO_INFINITE)
{
throw std::invalid_argument("io signature fail: min_streams > max_streams");
}
this->set_min_streams(min_streams);
this->set_max_streams(max_streams);
}
//! Construct from pointer for backwards compatible shared_ptr usage.
IOSignature(const IOSignature *sig)
{
*this = *sig;
}
//! Overloaded arrow operator for backwards compatible shared_ptr usage.
IOSignature* operator->(void)
{
return this;
};
//! Overloaded arrow operator for backwards compatible shared_ptr usage.
const IOSignature* operator->(void) const
{
return this;
};
void set_min_streams(const int val)
{
_min_streams = val;
}
void set_max_streams(const int val)
{
_max_streams = val;
}
int min_streams(void) const
{
return _min_streams;
}
int max_streams(void) const
{
return _max_streams;
}
int sizeof_stream_item(const int index) const
{
if (this->empty()) return 0;
if (this->size() > unsigned(index))
{
return this->at(index);
}
return this->back();
}
std::vector<int> sizeof_stream_items(void) const
{
return *this;
}
int _min_streams;
int _max_streams;
};
} //namespace gnuradio
#endif /*INCLUDED_GNURADIO_IO_SIGNATURE_HPP*/
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