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← Revision 17 as of 2015-01-02 21:46:19 ⇥
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SDL_MixAudio
This function is a legacy means of mixing audio. New programs might want to use SDL_MixAudioFormat() instead.
Syntax
void SDL_MixAudio(Uint8* dst,
const Uint8* src,
Uint32 len,
int volume)
Function Parameters
dst |
the destination for the mixed audio |
src |
the source audio buffer to be mixed |
len |
the length of the audio buffer in bytes |
volume |
ranges from 0 - 128, and should be set to SDL_MIX_MAXVOLUME for full audio volume |
Code Examples
void MyAudioCallback(void *udata, Uint8 *stream, int len)
{
extern const Uint8 *mixData;
SDL_memset(stream, 0, len); // make sure this is silence.
// mix our audio against the silence, at 50% volume.
SDL_MixAudio(stream, mixData, len, SDL_MIX_MAXVOLUME / 2);
}
Remarks
This function is equivalent to calling
SDL_MixAudioFormat(dst, src, format, len, volume);
where format is the obtained format of the audio device from the legacy SDL_OpenAudio() function.
