Sonic Visualiser

h1. Sonic Visualiser: architectural summary

Sonic Visualiser is a substantial application written in C++ using the "Qt":http://qt.nokia.com user interface toolkit.

It is a cross-platform application that can be built on (at least) OS/X, Windows, Linux, and Solaris, but it has a substantial number of dependencies on third-party libraries which contribute to the complexity of the build process. The code also does not currently build with Visual C++; the Windows build is done using MinGW and g++.

The Sonic Visualiser code is provided as a number of separate libraries, with varying dependencies. These are managed in separate projects on this code site, and are as follows:

* "*svcore*":/projects/svcore -- Non-interactive code, without user interface or audio device I/O.  This contains a number of submodules:

** *system* -- Some system-dependent code that Qt did not provide

** *base* -- Miscellaneous handy classes 

** *data/fft* -- FFT code [depends on fftw]

** *data/fileio* -- Audio file import and export and related classes [depends on libmad, liboggz, libfishsound, libsndfile]

** *data/midi* -- MIDI-related code [using rtmidi]

** *data/model* -- Data models used for Sonic Visualiser's internal representations. These include waveforms (including zoomed previews) as well as grids (spectrograms etc) and editable data (time/value plots, MIDI-style note tracks, text etc).

** *data/osc* -- OSC control [depends on liblo]

** *plugin* -- Interfaces for audio plugins such as LADSPA, DSSI, "Vamp":http://vamp-plugins.org/ [depends on vamp-hostsdk]

** *transform* -- A set of classes that use such plugins to transform the models found in *data/model* into one another (through audio analysis or effects transformations)

** *rdf* -- Classes to carry out RDF queries and to import and export RDF data to models or transforms [depends on librdf]