SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)


A variable controlling speed/quality tradeoff of audio resampling.

Header File

Defined in SDL_hints.h




If available, SDL can use libsamplerate ( ) to handle audio resampling. There are different resampling modes available that produce different levels of quality, using more CPU.

If this hint isn't specified to a valid setting, or libsamplerate isn't available, SDL will use the default, internal resampling algorithm.

As of SDL 2.26, SDL_ConvertAudio() respects this hint when libsamplerate is available.

This hint is currently only checked at audio subsystem initialization.

This variable can be set to the following values:

CategoryAPI, CategoryAPIMacro, CategoryHints

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