scripts/SS_GetSoundLength.gml
From spelunky.gmk, Spelunky Classic 1.1's source, © 2008, 2009 Derek Yu and Mossmouth, LLC, shown whole under the Spelunky User License v1.1b. Extracted by spelunky.ai's tools, an unofficial fan project, one file per script or event; the // ==== lines are the extractor's, naming each action of the event. Some scripts are others' work that Derek Yu credits in the source's readme.txt: Martin Piecyk's platform engine, ChevyRay's view scaling scripts and tsg1zzn's Super Sound System. This script is part of tsg1zzn's Super Sound System.
The script SS_GetSoundLength, 17 lines of GML.
//Gets the length in bytes/*argument0: sound handle as returned by SS_LoadSound*//*return: an error code less than 0 as real if unsuccessful,the length in bytes as real if successful.*/if is_real(argument0) then return 0;return real(external_call(global.dll_SS_GetSoundLength,argument0));