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Allow background music to play in the "play and record" case on iOS

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This commit is contained in:
Sam Lantinga 2020-03-26 19:30:17 -07:00
parent 369e5f33fb
commit abdc5cbf24
1 changed files with 38 additions and 28 deletions
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66
src/audio/coreaudio/SDL_coreaudio.m
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@ -327,44 +327,54 @@ static BOOL update_audio_session(_THIS, SDL_bool open)
AVAudioSession *session = [AVAudioSession sharedInstance];
NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
/* Set category to ambient by default so that other music continues playing. */
NSString *category = AVAudioSessionCategoryAmbient;
NSString *category = AVAudioSessionCategoryPlayback;
NSString *mode = AVAudioSessionModeDefault;
NSUInteger options = 0;
NSUInteger options = AVAudioSessionCategoryOptionMixWithOthers;
NSError *err = nil;
const char *hint;
if (open_playback_devices && open_capture_devices) {
hint = SDL_GetHint(SDL_HINT_AUDIO_CATEGORY);
if (hint) {
if (SDL_strcasecmp(hint, "AVAudioSessionCategoryAmbient") == 0) {
category = AVAudioSessionCategoryAmbient;
} else if (SDL_strcasecmp(hint, "AVAudioSessionCategorySoloAmbient") == 0) {
category = AVAudioSessionCategorySoloAmbient;
options &= ~AVAudioSessionCategoryOptionMixWithOthers;
} else if (SDL_strcasecmp(hint, "AVAudioSessionCategoryPlayback") == 0 ||
SDL_strcasecmp(hint, "playback") == 0) {
category = AVAudioSessionCategoryPlayback;
options &= ~AVAudioSessionCategoryOptionMixWithOthers;
} else if (SDL_strcasecmp(hint, "AVAudioSessionCategoryPlayAndRecord") == 0 ||
SDL_strcasecmp(hint, "playandrecord") == 0) {
category = AVAudioSessionCategoryPlayAndRecord;
}
} else if (open_playback_devices && open_capture_devices) {
category = AVAudioSessionCategoryPlayAndRecord;
#if !TARGET_OS_TV
options = AVAudioSessionCategoryOptionDefaultToSpeaker;
#endif
} else if (open_capture_devices) {
category = AVAudioSessionCategoryRecord;
} else {
const char *hint = SDL_GetHint(SDL_HINT_AUDIO_CATEGORY);
if (hint) {
if (SDL_strcasecmp(hint, "AVAudioSessionCategoryAmbient") == 0) {
category = AVAudioSessionCategoryAmbient;
} else if (SDL_strcasecmp(hint, "AVAudioSessionCategorySoloAmbient") == 0) {
category = AVAudioSessionCategorySoloAmbient;
} else if (SDL_strcasecmp(hint, "AVAudioSessionCategoryPlayback") == 0 ||
SDL_strcasecmp(hint, "playback") == 0) {
category = AVAudioSessionCategoryPlayback;
}
}
}
#if !TARGET_OS_TV
if (category == AVAudioSessionCategoryPlayAndRecord) {
options |= AVAudioSessionCategoryOptionDefaultToSpeaker;
}
#endif
if ([session respondsToSelector:@selector(setCategory:mode:options:error:)]) {
if (![session setCategory:category mode:mode options:options error:&err]) {
NSString *desc = err.description;
SDL_SetError("Could not set Audio Session category: %s", desc.UTF8String);
return NO;
if (![session.category isEqualToString:category] || session.categoryOptions != options) {
if (![session setCategory:category mode:mode options:options error:&err]) {
NSString *desc = err.description;
SDL_SetError("Could not set Audio Session category: %s", desc.UTF8String);
return NO;
}
}
} else {
if (![session setCategory:category error:&err]) {
NSString *desc = err.description;
SDL_SetError("Could not set Audio Session category: %s", desc.UTF8String);
return NO;
if (![session.category isEqualToString:category]) {
if (![session setCategory:category error:&err]) {
NSString *desc = err.description;
SDL_SetError("Could not set Audio Session category: %s", desc.UTF8String);
return NO;
}
}
}
@ -864,7 +874,7 @@ COREAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
this->spec.channels = session.preferredOutputNumberOfChannels;
}
#else
/* Calling setPreferredOutputNumberOfChannels seems to break audio output on iOS */
/* Calling setPreferredOutputNumberOfChannels seems to break audio output on iOS */
#endif /* TARGET_OS_TV */
}
#endif