ArchitecturalSummary » History » Version 3

Chris Cannam, 2012-01-13 04:54 PM

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h1. Sonic Visualiser: architectural summary
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Sonic Visualiser is a substantial application written in C++ using the "Qt": user interface toolkit.
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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++.
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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:
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* "*svcore*":/projects/svcore -- Non-interactive code, without user interface or audio device I/O.  This contains a number of submodules:
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** *system* -- Some system-dependent code that Qt did not provide
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** *base* -- Miscellaneous handy classes 
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** *data/fft* -- FFT code [depends on fftw]
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** *data/fileio* -- Audio file import and export and related classes [depends on libmad, liboggz, libfishsound, libsndfile]
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** *data/midi* -- MIDI-related code [using rtmidi]
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** *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).
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** *data/osc* -- OSC control [depends on liblo]
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** *plugin* -- Interfaces for audio plugins such as LADSPA, DSSI, "Vamp": [depends on vamp-hostsdk]
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** *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)
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** *rdf* -- Classes to carry out RDF queries and to import and export RDF data to models or transforms [depends on librdf]