30 lines
897 B
Objective-C
30 lines
897 B
Objective-C
#import <XCTest/XCTest.h>
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#import "TestUtil.h"
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#import "AudioStretcher.h"
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@interface AudioStretcherTest : XCTestCase
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@end
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@implementation AudioStretcherTest
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-(void) testStretchAudioStretches {
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for (NSNumber* s in @[@0.5, @1.0, @1.5]) {
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NSUInteger inputSampleCount = 8000;
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double stretch = [s doubleValue];
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double freq = 300;
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AudioStretcher* a = [AudioStretcher audioStretcher];
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NSData* inputData = sineWave(freq, 8000, 8000);
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NSData* outputData = [a stretchAudioData:inputData stretchFactor:stretch];
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NSUInteger outputSampleCount = [outputData length]/sizeof(int16_t);
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if ([s doubleValue] == 1) {
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test([inputData isEqualToData:outputData]);
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}
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double ratio = outputSampleCount / (double)inputSampleCount / stretch;
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test(ratio > 0.95 && ratio < 1.05);
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}
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}
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@end
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