Set gain value in audio streams

[luppichristian]

Hello, I think it would be useful to set a gain value per audio stream that can be modified dynamically like frequency ratio. Not sure if this is not implemented for a reason but I would like to ask.

int SDL_SetAudioStreamGainRatio(SDL_AudioStream* stream, float ratio);

float SDL_GetAudioStreamGainRatio(SDL_AudioStream* stream);

Thanks

[icculus]

I think we were just trying to find a point to stop adding features, but this would be useful and (probably) not difficult.