Change the gain of an audio stream.
Defined in <SDL3/SDL_audio.h>
bool SDL_SetAudioStreamGain(SDL_AudioStream *stream, float gain);| SDL_AudioStream * | stream | the stream on which the gain is being changed. |
| float | gain | the gain. 1.0f is no change, 0.0f is silence. |
(bool) Returns true on success or false on failure; call SDL_GetError() for more information.
The gain of a stream is its volume; a larger gain means a louder output, with a gain of zero being silence.
Audio streams default to a gain of 1.0f (no change in output).
This is applied during SDL_GetAudioStreamData, and can be continuously changed to create various effects.
It is safe to call this function from any thread, as it holds a stream-specific mutex while running.
This function is available since SDL 3.1.3.