Re: [osmosis-dev] Example code for PBF reading
On 19 March 2014 06:44, Peter K peat...@yahoo.de wrote: Osmosis just uses this library, right? I mean, it is a nicely packaged version of LGPLed OSM-binary: https://github.com/openstreetmap/osmosis/tree/master/osmosis-osm-binary Use it in maven via: dependency groupIdorg.openstreetmap.osmosis/groupId artifactIdosmosis-osm-binary/artifactId version0.43.1/version /dependency Yes, Osmosis uses that. But there's a little bit more to the story which might be useful. The osmosis-osm-binary project contains two pieces of code: - Auto-generated data model classes created by the protobuf protoc compiler. - Scott's common decoding logic that he designed to be shared by other projects outside of Osmosis. Osmosis itself has two separate PBF decoders, one in its osmosis-pbf project (--read-pbf task) and one in its osmosis-pbf2 project (--read-pbf-fast task). The osmosis-pbf project is Scott Crosby's original implementation, and the osmosis-pbf2 project is my re-write which supports decoding blocks using multiple threads to improve performance. The osmosis-pbf project utilises all of the osmosis-osm-binary project and only adds the Osmosis task code on top. The osmosis-pbf2 project only utilises the auto-generated protobuf classes and is an end-to-end decoding implementation. Finally, the osmosis-osm-binary project is not exactly Scott's original code. The original code is at https://github.com/scrosby/OSM-binary. The Osmosis version is mostly identical but modifies the package names to fit within the osmosis namespace and avoid any conflicts with other builds of the same code. I did this so that I could publish to Maven Central without fear of conflicts. In summary, you have the choice of two independent implementations of a PBF decoder, and both are available via Maven Central. The osmosis-pbf2 implementation is more Osmosis specific, however it should be possible to invoke the PbfReader class outside of the Osmosis pipeline as it performs all of its thread management internally. ___ osmosis-dev mailing list osmosis-dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/osmosis-dev
Re: [osmosis-dev] Example code for PBF reading
On Di, Mär 18, 2014 at 01:29:57 -0600, Martijn van Exel wrote: Are there any examples known to you that use the osmosis code in another project? I am specifically interested in using the PBF reading code. Or is there perhaps an easier way to add OSM PBF reading to my own (Java) project? There is some example PBF reading code in the OSM-binary repository https://github.com/scrosby/OSM-binary/blob/master/src.java/crosby/binary/test/ReadFileExample.java Also I think mkgmap (http://www.mkgmap.org.uk/) has its own PBF reading code based on OSM-binary. How good those implementations are, I don't know. Reading PBF files is not so simple, there are undocumented details that can trip you up. So using either of these might be more difficult than with Osmosis. Jochen -- Jochen Topf joc...@remote.org http://www.jochentopf.com/ +49-721-388298 ___ osmosis-dev mailing list osmosis-dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/osmosis-dev
Re: [osmosis-dev] Example code for PBF reading
Osmosis just uses this library, right? I mean, it is a nicely packaged version of LGPLed OSM-binary: https://github.com/openstreetmap/osmosis/tree/master/osmosis-osm-binary Use it in maven via: dependency groupIdorg.openstreetmap.osmosis/groupId artifactIdosmosis-osm-binary/artifactId version0.43.1/version /dependency Regards, Peter. On Di, Mär 18, 2014 at 01:29:57 -0600, Martijn van Exel wrote: Are there any examples known to you that use the osmosis code in another project? I am specifically interested in using the PBF reading code. Or is there perhaps an easier way to add OSM PBF reading to my own (Java) project? There is some example PBF reading code in the OSM-binary repository https://github.com/scrosby/OSM-binary/blob/master/src.java/crosby/binary/test/ReadFileExample.java Also I think mkgmap (http://www.mkgmap.org.uk/) has its own PBF reading code based on OSM-binary. How good those implementations are, I don't know. Reading PBF files is not so simple, there are undocumented details that can trip you up. So using either of these might be more difficult than with Osmosis. Jochen -- GraphHopper.com - Fast Flexible Road Routing ___ osmosis-dev mailing list osmosis-dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/osmosis-dev
