25077277b3
A bad sample scanner and cleaner will point out in the log whenever a bad sample, such as infinity, or Not a Number, or even huge values over ±2.0, in case some piece of code, or a decoder, or even a bad file, has taken over the output. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
40 lines
938 B
Objective-C
40 lines
938 B
Objective-C
//
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// BadSampleCleaner.m
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// CogAudio Framework
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//
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// Created by Christopher Snowhill on 2/15/22.
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//
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#ifdef _DEBUG
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#import "BadSampleCleaner.h"
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#import "Logging.h"
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@implementation BadSampleCleaner
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+ (void)cleanSamples:(float *)buffer amount:(NSUInteger)amount location:(NSString *)location {
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BOOL hadNaN = NO;
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BOOL hadINF = NO;
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BOOL hadHUGE = NO;
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for(NSUInteger i = 0; i < amount; ++i) {
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float sample = buffer[i];
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BOOL isNaN = isnan(sample);
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BOOL isINF = isinf(sample);
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BOOL isHUGE = (fabs(sample) > 2.0);
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hadNaN = hadNaN || isNaN;
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hadINF = hadINF || isINF;
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hadHUGE = hadHUGE || isHUGE;
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if(isNaN || isINF || isHUGE) {
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memset(&buffer[i], 0, sizeof(buffer[i]));
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memset(&sample, 0, sizeof(sample));
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}
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}
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if(hadNaN || hadINF || hadHUGE) {
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DLog(@"Sample block at %@ had NaN: %@, INF: %@, HUGE: %@", location, hadNaN ? @"yes" : @"no", hadINF ? @"yes" : @"no", hadHUGE ? @"yes" : @"no");
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}
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}
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@end
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#endif
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