Program Listing for File pass_through.hpp
↰ Return to documentation for file (include/message_filters/pass_through.hpp
)
// Copyright 2010, Willow Garage, Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// * Neither the name of the Willow Garage nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#ifndef MESSAGE_FILTERS__PASS_THROUGH_HPP_
#define MESSAGE_FILTERS__PASS_THROUGH_HPP_
#include <memory>
#include <utility>
#include <vector>
#include "message_filters/simple_filter.hpp"
namespace message_filters
{
template<typename M>
class PassThrough : public SimpleFilter<M>
{
public:
typedef std::shared_ptr<M const> MConstPtr;
typedef MessageEvent<M const> EventType;
PassThrough()
{
}
template<typename F>
PassThrough(F & f) // NOLINT(runtime/explicit)
{
connectInput(f);
}
template<class F>
void connectInput(F & f)
{
incoming_connection_.disconnect();
incoming_connection_ =
f.registerCallback(
typename SimpleFilter<M>::EventCallback(
std::bind(
&PassThrough::cb, this,
std::placeholders::_1)));
}
void add(const MConstPtr & msg)
{
add(EventType(msg));
}
void add(const EventType & evt)
{
this->signalMessage(evt);
}
private:
void cb(const EventType & evt)
{
add(evt);
}
Connection incoming_connection_;
};
} // namespace message_filters
#endif // MESSAGE_FILTERS__PASS_THROUGH_HPP_