database_reader.h File Reference

Concrete BagReader implementation for the SQLite-backed VLink bag format. More...

#include <future>
#include <memory>
#include <string>
#include <vector>
#include "./bag_reader.h"

Include dependency graph for database_reader.h:

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Classes
class	vlink::DatabaseReader
	Concrete SQLite-backed bag file player. More...

Namespaces
namespace	vlink

Detailed Description

Concrete BagReader implementation for the SQLite-backed VLink bag format.

DatabaseReader reads bag files in the SQLite-backed .vdb format and inherits all playback, seeking, fix, and reindex capabilities from BagReader.

The .vdb format stores messages in a structured SQLite database, enabling efficient random-access queries, indexed playback, and in-place repair with fix().

Usage

auto reader = vlink::BagReader::create("/data/recording.vdb");
// or explicitly:
auto reader = std::make_shared<vlink::DatabaseReader>("/data/recording.vdb");
reader->register_output_callback([](int64_t ts, const std::string& url,
                                    vlink::ActionType action, const vlink::Bytes& data) {
    // process message
});
reader->async_run();
reader->play({});

See also

BagReader, McapReader