(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_GetAudioStreamInputChannelMap

Get the current input channel map of an audio stream.

Header File

Syntax

int * SDL_GetAudioStreamInputChannelMap(SDL_AudioStream *stream, int *count);

Function Parameters

SDL_AudioStream *	stream	the SDL_AudioStream to query.
int *	count	On output, set to number of channels in the map. Can be NULL.

Return Value

(int *) Returns an array of the current channel mapping, with as many elements as the current output spec's channels, or NULL if default. This should be freed with SDL_free() when it is no longer needed.

Remarks

Channel maps are optional; most things do not need them, instead passing data in the order that SDL expects.

Audio streams default to no remapping applied. This is represented by returning NULL, and does not signify an error.

Thread Safety

It is safe to call this function from any thread, as it holds a stream-specific mutex while running.

Version

This function is available since SDL 3.1.3.