Browse Source
- View with rulers - FFT with Accelerated framework - Opening music from iTunes (almost) TODO: ducktape things togethermaster
Joshua Moerman
11 years ago
10 changed files with 473 additions and 19 deletions
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*xcworkspace |
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*xcuserdata |
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build |
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<?xml version="1.0" encoding="UTF-8" standalone="no"?> |
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<document type="com.apple.InterfaceBuilder3.CocoaTouch.iPad.XIB" version="3.0" toolsVersion="4514" systemVersion="13B42" targetRuntime="iOS.CocoaTouch.iPad" propertyAccessControl="none" useAutolayout="YES"> |
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<dependencies> |
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<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="4514"/> |
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</dependencies> |
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<objects> |
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<placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="ViewController"> |
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<connections> |
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<outlet property="contentView" destination="1" id="waQ-1e-XtN"/> |
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</connections> |
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</placeholder> |
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<placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/> |
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<view contentMode="scaleToFill" id="1"> |
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<rect key="frame" x="0.0" y="0.0" width="534" height="376"/> |
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> |
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<subviews> |
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<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="qOE-WQ-xv7"> |
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<rect key="frame" x="414" y="256" width="100" height="100"/> |
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> |
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<color key="backgroundColor" red="0.40000000600000002" green="1" blue="0.80000001190000003" alpha="1" colorSpace="calibratedRGB"/> |
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<constraints> |
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<constraint firstAttribute="height" constant="100" id="20Q-nP-HWg"/> |
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<constraint firstAttribute="width" constant="100" id="Isk-N0-p0Z"/> |
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</constraints> |
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</view> |
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<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="V5r-JV-Fkh"> |
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<rect key="frame" x="414" y="20" width="100" height="100"/> |
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> |
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<color key="backgroundColor" red="0.80000001192092896" green="1" blue="0.40000000596046448" alpha="1" colorSpace="calibratedRGB"/> |
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<constraints> |
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<constraint firstAttribute="width" constant="100" id="GAt-IV-PXp"/> |
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<constraint firstAttribute="height" constant="100" id="eYY-eK-hai"/> |
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</constraints> |
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</view> |
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<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="xhz-dx-nq1"> |
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<rect key="frame" x="20" y="20" width="100" height="100"/> |
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> |
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<color key="backgroundColor" red="1" green="0.80000001192092896" blue="0.40000000596046448" alpha="1" colorSpace="calibratedRGB"/> |
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<constraints> |
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<constraint firstAttribute="height" constant="100" id="L4i-fJ-6Ko"/> |
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<constraint firstAttribute="width" constant="100" id="ym9-zy-Fdt"/> |
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</constraints> |
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</view> |
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<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="01T-Bq-eRq"> |
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<rect key="frame" x="20" y="256" width="100" height="100"/> |
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> |
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<color key="backgroundColor" red="1" green="0.43529412150382996" blue="0.81176471710205078" alpha="1" colorSpace="calibratedRGB"/> |
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<constraints> |
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<constraint firstAttribute="height" constant="100" id="Vc9-mU-Out"/> |
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<constraint firstAttribute="width" constant="100" id="zza-hp-DTx"/> |
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</constraints> |
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</view> |
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</subviews> |
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<color key="backgroundColor" red="1" green="0.40000000596046448" blue="0.40000000596046448" alpha="1" colorSpace="calibratedRGB"/> |
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<constraints> |
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<constraint firstItem="01T-Bq-eRq" firstAttribute="leading" secondItem="1" secondAttribute="leading" constant="20" id="D6I-ib-Jul"/> |
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<constraint firstAttribute="trailing" secondItem="V5r-JV-Fkh" secondAttribute="trailing" constant="20" id="Jx3-5I-Mar"/> |
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<constraint firstItem="xhz-dx-nq1" firstAttribute="top" secondItem="1" secondAttribute="top" constant="20" id="MPA-2Y-2Ax"/> |
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<constraint firstItem="xhz-dx-nq1" firstAttribute="leading" secondItem="1" secondAttribute="leading" constant="20" id="TSQ-mb-8WP"/> |
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<constraint firstAttribute="bottom" secondItem="qOE-WQ-xv7" secondAttribute="bottom" constant="20" id="cwF-Rs-2Ma"/> |
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<constraint firstItem="V5r-JV-Fkh" firstAttribute="top" secondItem="1" secondAttribute="top" constant="20" id="lta-Lt-WYv"/> |
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<constraint firstAttribute="trailing" secondItem="qOE-WQ-xv7" secondAttribute="trailing" constant="20" id="oNF-uM-mJr"/> |
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<constraint firstAttribute="bottom" secondItem="01T-Bq-eRq" secondAttribute="bottom" constant="20" id="qi3-cZ-ZFw"/> |
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</constraints> |
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<freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/> |
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</view> |
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</objects> |
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</document> |
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//
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// FFTTest.h
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// SpectogramPrototype
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//
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// Created by Joshua Moerman on 24/12/13.
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// Copyright (c) 2013 Joshua Moerman. All rights reserved.
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//
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#import <Foundation/Foundation.h> |
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@interface FFTTest : NSObject |
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- (void) inPlaceFFT:(float*)data forSize:(unsigned int)n; |
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@property (readonly) unsigned int acceptedSize; |
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@end |
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// |
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// FFTTest.m |
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// SpectogramPrototype |
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// |
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// Created by Joshua Moerman on 24/12/13. |
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// Copyright (c) 2013 Joshua Moerman. All rights reserved. |
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// |
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#import "FFTTest.h" |
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#import <Accelerate/Accelerate.h> |
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@interface FFTTest () { |
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FFTSetup setup; |
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float * window; |
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float * buffer; |
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} |
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@end |
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const int logN = 3; |
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const int N = 1 << logN; |
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const float scaling = 1.0 / N; |
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@implementation FFTTest |
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@synthesize acceptedSize; |
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- (id)init{ |
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if(self = [super init]){ |
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acceptedSize = N; |
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setup = vDSP_create_fftsetup(logN, kFFTRadix2); |
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window = calloc(N, sizeof(float)); |
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buffer = calloc(N, sizeof(float)); |
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assert(setup && window && buffer); |
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} |
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return self; |
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} |
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- (void)dealloc{ |
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free(buffer); |
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free(window); |
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vDSP_destroy_fftsetup(setup); |
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} |
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- (void)inPlaceFFT:(float *)data forSize:(unsigned int)n{ |
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assert(n == N); |
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// Output the source data |
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for(int i = 0; i < N; ++i){ |
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printf("%f, ", data[i]); |
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} |
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printf("\n"); |
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// Window our time - slice |
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// vDSP_blkman_window(window, N, 0); |
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// vmul(data, 1, window, 1, data, 1, N); |
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// Rearrange data |
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DSPSplitComplex split_buffer = { buffer, buffer + N/2 }; |
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vDSP_ctoz((DSPComplex *)data, 2, &split_buffer, 1, N/2); |
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// DO IT! |
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vDSP_fft_zrip(setup, &split_buffer, 1, logN, FFT_FORWARD); |
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// Calculates magnitudes (so ignores phases) |
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vDSP_zvabs(&split_buffer, 1, data, 1, N/2); |
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vDSP_vsmul(data, 1, &scaling, data, 1, N/2); |
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// Output results: |
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for(int i = 0; i < N/2; ++i){ |
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printf("%f, ", data[i]); |
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} |
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printf("\n"); |
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} |
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@end |
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//
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// RuledScrollView.h
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// SpectogramPrototype
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//
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// Created by Joshua Moerman on 24/12/13.
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// Copyright (c) 2013 Joshua Moerman. All rights reserved.
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//
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#import <UIKit/UIKit.h> |
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@interface RuledScrollView : UIScrollView |
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@property (nonatomic, readonly) UIView * content; |
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@property (nonatomic, readonly) UIView * topRuler; |
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@property (nonatomic, readonly) UIView * leftRuler; |
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@end |
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// |
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// RuledScrollView.m |
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// SpectogramPrototype |
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// |
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// Created by Joshua Moerman on 24/12/13. |
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// Copyright (c) 2013 Joshua Moerman. All rights reserved. |
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// |
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#import "RuledScrollView.h" |
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@interface RuledScrollView () <UIScrollViewDelegate> { |
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CGFloat rulerHeight; |
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CGFloat rulerWidth; |
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} |
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- (void) initView; |
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- (void) placeTicks; |
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@end |
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@implementation RuledScrollView |
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@synthesize content, topRuler, leftRuler; |
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- (id)initWithFrame:(CGRect)frame{ |
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if(self = [super initWithFrame:frame]){ |
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[self initView]; |
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} |
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return self; |
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} |
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- (id)initWithCoder:(NSCoder *)aDecoder{ |
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if(self = [super initWithCoder:aDecoder]){ |
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[self initView]; |
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} |
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return self; |
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} |
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- (void)initView { |
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rulerHeight = 44; |
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rulerWidth = 120; |
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self.delegate = self; |
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self.backgroundColor = [UIColor whiteColor]; |
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content = [[UIView alloc] initWithFrame:self.frame]; |
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content.autoresizesSubviews = NO; |
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[self addSubview:content]; |
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CGRect frame2 = self.frame; |
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frame2.size.height = rulerHeight; |
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topRuler = [[UIView alloc] initWithFrame:frame2]; |
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topRuler.layer.opacity = 0.5; |
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topRuler.backgroundColor = self.backgroundColor; |
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[self addSubview:topRuler]; |
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CGRect frame3 = self.frame; |
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frame3.size.width = rulerWidth; |
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leftRuler = [[UIView alloc] initWithFrame:frame3]; |
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leftRuler.layer.opacity = 0.5; |
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leftRuler.backgroundColor = self.backgroundColor; |
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[self addSubview:leftRuler]; |
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} |
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/* we should draw the ticks in drawRect: |
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[[UIColor blackColor] setFill]; |
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UIRectFill((CGRect){0,200,rect.size.width,1}); |
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and do tiling for the text |
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*/ |
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- (void)placeTicks { |
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[topRuler.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)]; |
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for (CGFloat x = rulerWidth + 50; x < topRuler.frame.size.width; x += 100){ |
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UIView * line = [[UIView alloc] initWithFrame:CGRectMake(x, 0, 1, rulerHeight)]; |
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line.backgroundColor = [UIColor blackColor]; |
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[topRuler addSubview:line]; |
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CGFloat width = 100; |
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UILabel * text = [[UILabel alloc] initWithFrame:CGRectMake(x - width/2, 0, width, rulerHeight)]; |
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text.text = [NSString stringWithFormat:@"%.0f", x]; |
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text.textAlignment = NSTextAlignmentCenter; |
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[topRuler addSubview:text]; |
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} |
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} |
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- (void)layoutSubviews { |
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{ |
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CGRect frame = self.topRuler.frame; |
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frame.origin.y = self.contentOffset.y; |
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self.topRuler.frame = frame; |
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[self placeTicks]; |
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} |
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{ |
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CGRect frame = self.leftRuler.frame; |
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frame.origin.x = self.contentOffset.x; |
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self.leftRuler.frame = frame; |
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} |
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} |
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- (void)setContentSize:(CGSize)contentSize{ |
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[super setContentSize:CGSizeMake(contentSize.width + rulerWidth, contentSize.height + rulerHeight)]; |
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content.frame = CGRectMake(rulerWidth, rulerHeight, contentSize.width, contentSize.height); |
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topRuler.frame = CGRectMake(0, 0, contentSize.width + rulerWidth, rulerHeight); |
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leftRuler.frame = CGRectMake(0, 0, rulerWidth, contentSize.height + rulerHeight); |
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} |
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- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ |
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return content; |
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} |
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@end |
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