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vips — startup, shutdown, version
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VipsImage — the VIPS image class
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header — get, set and walk image headers
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generate — calculate pixels and pixel buffers
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VipsOperation — the VIPS operation base object class
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error — error messages and error handling
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memory — memory utilities
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VipsRegion — small, rectangular parts of images
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type — basic types
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rect — the VIPS rectangle class
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VipsObject — the VIPS base object class
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VipsThreadpool — pools of worker threads
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buf — a string you can append to
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VipsConnection — a source/sink of bytes, perhaps a network socket
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VipsSbuf — buffered read from a source
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basic — a few typedefs used everywhere