SDL Wiki
(This function is part of SDL_mixer, a separate library from SDL.)


Play a new music object, fading in the audio, from a starting position.

Header File

Defined in <SDL_mixer.h>


int Mix_FadeInMusicPos(Mix_Music *music, int loops, int ms, double position);

Function Parameters

Mix_Music * music the new music object to play.
int loops the number of times the chunk should loop, -1 to loop (not actually) infinitely.
int ms the number of milliseconds to spend fading in.
double position the start position within the music, in seconds, where playback should start.

Return Value

(int) Returns zero on success, -1 on error.


This will start the new music playing, much like Mix_PlayMusic() will, but will start the music playing at silence and fade in to its normal volume over the specified number of milliseconds.

If there is already music playing, that music will be halted and the new music object will take its place.

If loops is greater than zero, loop the music that many times. If loops is -1, loop "infinitely" (~65000 times).

Fading music will change it's volume progressively, as if Mix_VolumeMusic() was called on it (which is to say: you probably shouldn't call Mix_VolumeMusic() on fading music).

This function allows the caller to start the music playback past the beginning of its audio data. You may specify a start position, in seconds, and the playback and fade-in will start there instead of with the first samples of the music.

An app can specify a position of 0.0 to start at the beginning of the music (or just call Mix_FadeInMusic() instead).

To convert from milliseconds, divide by 1000.0.


This function is available since SDL_mixer 2.0.0.

CategoryAPI, CategoryAPIFunction

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