103 lines
3.3 KiB
Objective-C
103 lines
3.3 KiB
Objective-C
#import "OutputsArrayController.h"
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#import <CoreAudio/AudioHardware.h>
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@implementation OutputsArrayController
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- (void)awakeFromNib
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{
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[self removeObjects:[self arrangedObjects]];
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[self setSelectsInsertedObjects:NO];
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NSDictionary *defaultDevice = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] objectForKey:@"outputDevice"];
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NSString *defaultDeviceName = defaultDevice[@"name"];
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NSNumber *defaultDeviceIDNum = defaultDevice[@"deviceID"];
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AudioDeviceID defaultDeviceID = [defaultDeviceIDNum unsignedIntValue];
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[self enumerateAudioOutputsUsingBlock:
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^(NSString *deviceName, AudioDeviceID deviceID, AudioDeviceID systemDefaultID, BOOL *stop) {
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NSDictionary *deviceInfo = @{
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@"name": deviceName,
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@"deviceID": @(deviceID),
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};
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[self addObject:deviceInfo];
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if (defaultDevice) {
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if ((deviceID == defaultDeviceID) ||
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([deviceName isEqualToString:defaultDeviceName])) {
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[self setSelectedObjects:[NSArray arrayWithObject:deviceInfo]];
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// Update `outputDevice`, in case the ID has changed.
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[[NSUserDefaults standardUserDefaults] setObject:deviceInfo forKey:@"outputDevice"];
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}
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}
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else {
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if (deviceID == systemDefaultID) {
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[self setSelectedObjects:[NSArray arrayWithObject:deviceInfo]];
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}
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}
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}];
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if (!defaultDevice) {
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[self setSelectionIndex:0];
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}
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}
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- (void)enumerateAudioOutputsUsingBlock:(void (NS_NOESCAPE ^ _Nonnull)(NSString *deviceName, AudioDeviceID deviceID, AudioDeviceID systemDefaultID, BOOL *stop))block
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{
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UInt32 propsize;
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AudioObjectPropertyAddress theAddress = {
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.mSelector = kAudioHardwarePropertyDevices,
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.mScope = kAudioObjectPropertyScopeGlobal,
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.mElement = kAudioObjectPropertyElementMaster
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};
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__Verify_noErr(AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &theAddress, 0, NULL, &propsize));
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UInt32 nDevices = propsize / (UInt32)sizeof(AudioDeviceID);
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AudioDeviceID *devids = malloc(propsize);
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__Verify_noErr(AudioObjectGetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, &propsize, devids));
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theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
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AudioDeviceID systemDefault;
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propsize = sizeof(systemDefault);
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__Verify_noErr(AudioObjectGetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, &propsize, &systemDefault));
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theAddress.mScope = kAudioDevicePropertyScopeOutput;
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for (UInt32 i = 0; i < nDevices; ++i) {
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CFStringRef name = NULL;
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propsize = sizeof(name);
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theAddress.mSelector = kAudioDevicePropertyDeviceNameCFString;
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__Verify_noErr(AudioObjectGetPropertyData(devids[i], &theAddress, 0, NULL, &propsize, &name));
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propsize = 0;
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theAddress.mSelector = kAudioDevicePropertyStreamConfiguration;
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__Verify_noErr(AudioObjectGetPropertyDataSize(devids[i], &theAddress, 0, NULL, &propsize));
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if (propsize < sizeof(UInt32)) continue;
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AudioBufferList * bufferList = (AudioBufferList *) malloc(propsize);
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__Verify_noErr(AudioObjectGetPropertyData(devids[i], &theAddress, 0, NULL, &propsize, bufferList));
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UInt32 bufferCount = bufferList->mNumberBuffers;
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free(bufferList);
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if (!bufferCount) continue;
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BOOL stop = NO;
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block([NSString stringWithString:(__bridge NSString *)name],
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devids[i],
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systemDefault,
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&stop);
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CFRelease(name);
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if (stop) {
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break;
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}
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}
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free(devids);
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}
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@end
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