4f5e4eca36
IN A.D. 2101, WAR WAS BEGINNING. *boom* Yeah, this was a dumb bug, I didn't realize that AUAudioUnit would just arbitrarily ignore my configured block size and request a different one. The AirPods Pro will just request 480 instead of the 512 I ask for, so let's instead support variable block sizes, and only take up to the last 4096 samples of the chunk fed to the output device. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
69 lines
1.3 KiB
Objective-C
69 lines
1.3 KiB
Objective-C
//
|
|
// VisualizationController.m
|
|
// CogAudio Framework
|
|
//
|
|
// Created by Christopher Snowhill on 2/12/22.
|
|
//
|
|
|
|
#import "VisualizationController.h"
|
|
#import <Accelerate/Accelerate.h>
|
|
|
|
#import "fft.h"
|
|
|
|
@implementation VisualizationController
|
|
|
|
static VisualizationController *_sharedController = nil;
|
|
|
|
+ (VisualizationController *)sharedController {
|
|
@synchronized(self) {
|
|
if(!_sharedController) {
|
|
_sharedController = [[VisualizationController alloc] init];
|
|
}
|
|
}
|
|
return _sharedController;
|
|
}
|
|
|
|
- (id)init {
|
|
self = [super init];
|
|
if(self) {
|
|
vDSP_vclr(visAudio, 1, 4096);
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (void)dealloc {
|
|
fft_free();
|
|
}
|
|
|
|
- (void)postSampleRate:(double)sampleRate {
|
|
@synchronized(self) {
|
|
self->sampleRate = sampleRate;
|
|
}
|
|
}
|
|
|
|
- (void)postVisPCM:(const float *)inPCM amount:(int)amount {
|
|
int skipAmount = 0;
|
|
if(amount > 4096) {
|
|
skipAmount = amount - 4096;
|
|
amount = 4096;
|
|
}
|
|
@synchronized(self) {
|
|
cblas_scopy(4096 - amount, visAudio + amount, 1, visAudio, 1);
|
|
cblas_scopy(amount, inPCM + skipAmount, 1, visAudio + 4096 - amount, 1);
|
|
}
|
|
}
|
|
|
|
- (double)readSampleRate {
|
|
@synchronized(self) {
|
|
return sampleRate;
|
|
}
|
|
}
|
|
|
|
- (void)copyVisPCM:(float *)outPCM visFFT:(float *)outFFT {
|
|
@synchronized(self) {
|
|
cblas_scopy(4096, visAudio, 1, outPCM, 1);
|
|
fft_calculate(visAudio, outFFT, 2048);
|
|
}
|
|
}
|
|
|
|
@end
|