ScummVM API documentation
API reference
Here is a list of all modules:
[detail level 1234]
 Common APICommon classes, functions, and structures
 Audio APIAPIs for managing in-game audio
 Engine APIAPI related to engines
 Graphics APIAPI related to on-screen graphics - surfaces, pixels, cursors, fonts, palettes, and renderers
 Image APIAPI of various image decoders used in engines