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Stop CoreAudio from doing expensive audio rate conversion

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Sam Lantinga 2017-02-23 12:10:02 -08:00
parent a9762551cd
commit 71a4e8ed13
1 changed files with 7 additions and 0 deletions
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7
src/audio/coreaudio/SDL_coreaudio.m
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@ -734,6 +734,13 @@ COREAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
if (!update_audio_session(this, SDL_TRUE)) {
return -1;
}
/* Stop CoreAudio from doing expensive audio rate conversion */
@autoreleasepool {
AVAudioSession* session = [AVAudioSession sharedInstance];
[session setPreferredSampleRate:this->spec.freq error:nil];
this->spec.freq = (int)session.sampleRate;
}
#endif
/* Setup a AudioStreamBasicDescription with the requested format */