/usr/include/rosbag/view.h is in librosbag-storage-dev 1.11.16-3.
This file is owned by root:root, with mode 0o644.
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#ifndef ROSBAG_VIEW_H
#define ROSBAG_VIEW_H
#include <boost/function.hpp>
#include <boost/iterator/iterator_facade.hpp>
#include "rosbag/message_instance.h"
#include "rosbag/query.h"
#include "rosbag/macros.h"
#include "rosbag/structures.h"
namespace rosbag {
class ROSBAG_DECL View
{
friend class Bag;
public:
//! An iterator that points to a MessageInstance from a bag
/*!
* This iterator stores the MessageInstance that it is returning a
* reference to. If you increment the iterator that
* MessageInstance is destroyed. You should never store the
* pointer to this reference.
*/
class iterator : public boost::iterator_facade<iterator,
MessageInstance,
boost::forward_traversal_tag>
{
public:
iterator(iterator const& i);
iterator();
~iterator();
protected:
iterator(View* view, bool end = false);
private:
friend class View;
friend class boost::iterator_core_access;
void populate();
void populateSeek(std::multiset<IndexEntry>::const_iterator iter);
bool equal(iterator const& other) const;
void increment();
MessageInstance& dereference() const;
private:
View* view_;
std::vector<ViewIterHelper> iters_;
uint32_t view_revision_;
mutable MessageInstance* message_instance_;
};
typedef iterator const_iterator;
struct TrueQuery {
bool operator()(ConnectionInfo const*) const { return true; };
};
//! Create a view on a bag
/*!
* param reduce_overlap If multiple views return the same messages, reduce them to a single message
*/
View(bool const& reduce_overlap = false);
//! Create a view on a bag
/*!
* param bag The bag file on which to run this query
* param start_time The beginning of the time range for the query
* param end_time The end of the time range for the query
* param reduce_overlap If multiple views return the same messages, reduce them to a single message
*/
View(Bag const& bag, ros::Time const& start_time = ros::TIME_MIN, ros::Time const& end_time = ros::TIME_MAX, bool const& reduce_overlap = false);
//! Create a view and add a query
/*!
* param bag The bag file on which to run this query
* param query The actual query to evaluate which connections to include
* param start_time The beginning of the time range for the query
* param end_time The end of the time range for the query
* param reduce_overlap If multiple views return the same messages, reduce them to a single message
*/
View(Bag const& bag, boost::function<bool(ConnectionInfo const*)> query,
ros::Time const& start_time = ros::TIME_MIN, ros::Time const& end_time = ros::TIME_MAX, bool const& reduce_overlap = false);
~View();
iterator begin();
iterator end();
uint32_t size();
//! Add a query to a view
/*!
* param bag The bag file on which to run this query
* param start_time The beginning of the time range for the query
* param end_time The end of the time range for the query
*/
void addQuery(Bag const& bag, ros::Time const& start_time = ros::TIME_MIN, ros::Time const& end_time = ros::TIME_MAX);
//! Add a query to a view
/*!
* param bag The bag file on which to run this query
* param query The actual query to evaluate which connections to include
* param start_time The beginning of the time range for the query
* param end_time The end of the time range for the query
*/
void addQuery(Bag const& bag, boost::function<bool(ConnectionInfo const*)> query,
ros::Time const& start_time = ros::TIME_MIN, ros::Time const& end_time = ros::TIME_MAX);
std::vector<const ConnectionInfo*> getConnections();
ros::Time getBeginTime();
ros::Time getEndTime();
protected:
friend class iterator;
void updateQueries(BagQuery* q);
void update();
MessageInstance* newMessageInstance(ConnectionInfo const* connection_info, IndexEntry const& index, Bag const& bag);
private:
View(View const& view);
View& operator=(View const& view);
protected:
std::vector<MessageRange*> ranges_;
std::vector<BagQuery*> queries_;
uint32_t view_revision_;
uint32_t size_cache_;
uint32_t size_revision_;
bool reduce_overlap_;
};
} // namespace rosbag
#endif
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