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BCVideoFilter/BCFilters/BCColorInvertFilter.h

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+//
+//  BCColorInvertFilter.h
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCFilter.h"
+
+@interface BCColorInvertFilter : BCFilter
+
+@end

BCVideoFilter/BCFilters/BCColorInvertFilter.m

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+//
+//  BCColorInvertFilter.m
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCColorInvertFilter.h"
+
+@implementation BCColorInvertFilter
+
+/**
+ *  反转颜色滤镜-CIColorInvert
+ *
+ *  @param image   处理前的图片
+ *  @param content 上下文
+ *
+ *  @return 滤镜处理后的图片
+ */
+- (CIImage *)colorInvertWithImage:(CIImage *)ciImage
+{
+    if (!ciImage) {
+        return nil;
+    }
+
+    CIFilter *filter = [CIFilter filterWithName:@"CIColorInvert"];
+    [filter setValue:ciImage forKey:kCIInputImageKey];
+    CIImage *outPutImg = [filter outputImage];
+    return outPutImg;
+}
+
+
+/**
+ *  重写函数
+ *
+ *  @param image 处理前的图片
+ *
+ *  @return 处理后的图片
+ */
+- (CIImage *)getFilterHanldeImage:(CIImage *)image
+{
+    return [self colorInvertWithImage:image];
+}
+
+@end

BCVideoFilter/BCFilters/BCFilter.h

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+//
+//  BCFilter.h
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/2/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface BCFilter : NSObject
+
+// 当前滤镜说明
+@property (nonatomic, copy) NSString *currentFilter;
+
+// 滤镜参数
+@property (nonatomic, copy) NSArray *parameters;
+
+
+/**
+ *  获取处理后的图片
+ *
+ *  @param image 处理前的图片
+ *
+ *  @return 处理后的图片
+ */
+- (CIImage *)getFilterHanldeImage:(CIImage *)image;
+
+@end

BCVideoFilter/BCFilters/BCFilter.m

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+//
+//  BCFilter.m
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/2/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCFilter.h"
+
+@implementation BCFilter
+
+- (CIImage *)getFilterHanldeImage:(CIImage *)image
+{
+    return image;
+}
+
+@end

BCVideoFilter/BCFilters/BCGaussianBlurFilter.h

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+//
+//  BCGaussianBlurFilter.h
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCFilter.h"
+
+@interface BCGaussianBlurFilter : BCFilter
+
+@end

BCVideoFilter/BCFilters/BCGaussianBlurFilter.m

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+//
+//  BCGaussianBlurFilter.m
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCGaussianBlurFilter.h"
+
+@implementation BCGaussianBlurFilter
+
+/**
+ *  高斯模糊滤镜-CIGaussianBlur
+ *
+ *  @param ciImage 处理前的图片
+ *  @param radius  半径
+ *  @param content 上下文
+ *
+ *  @return 滤镜处理后的图片
+ */
+- (CIImage *)gaussianBlurWithImage:(CIImage *)ciImage
+                            radius:(CGFloat)radius
+{
+    CIFilter *filter = [CIFilter filterWithName:@"CIGaussianBlur"];
+    [filter setValue:ciImage forKey:kCIInputImageKey];
+    if (radius >= 0 && radius <= 100) {
+        [filter setValue:@(radius) forKey:@"inputRadius"];
+    }
+    CIImage *outPutImg = [filter outputImage];
+    return outPutImg;
+}
+
+/**
+ *  重写函数
+ *
+ *  @param image 处理前的图片
+ *
+ *  @return 处理后的图片
+ */
+- (CIImage *)getFilterHanldeImage:(CIImage *)image
+{
+    return [self gaussianBlurWithImage:image radius:2.0];
+}
+
+@end

BCVideoFilter/BCFilters/BCPixellateFilter.h

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+//
+//  BCPixellateFilter.h
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCFilter.h"
+
+@interface BCPixellateFilter : BCFilter
+
+@end

BCVideoFilter/BCFilters/BCPixellateFilter.m

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+//
+//  BCPixellateFilter.m
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCPixellateFilter.h"
+
+@implementation BCPixellateFilter
+
+/**
+ *  像素滤镜-CIPixellate
+ *
+ *  @param ciImage 处理前的图片
+ *  @param center  中心点
+ *  @param scale   比列
+ *  @param content 上下文
+ *
+ *  @return 滤镜处理后的图片
+ */
+- (CIImage *)pixellateWithImage:(CIImage *)ciImage
+                         center:(CGPoint)center
+                          scale:(CGFloat)scale
+{
+    CIFilter *filter = [CIFilter filterWithName:@"CIPixellate"];
+    [filter setValue:ciImage forKey:kCIInputImageKey];
+    if (scale >= 1 && scale <= 100) {
+        [filter setValue:@(scale) forKey:@"inputScale"];
+    }
+    CIVector *vector = [CIVector vectorWithCGPoint:center];
+    [filter setValue:vector forKey:@"inputCenter"];
+    CIImage *outPutImg = [filter outputImage];
+    return outPutImg;
+}
+
+/**
+ *  重写函数
+ *
+ *  @param image 处理前的图片
+ *
+ *  @return 处理后的图片
+ */
+- (CIImage *)getFilterHanldeImage:(CIImage *)image
+{
+    return [self pixellateWithImage:image center:CGPointMake(300, 300) scale:8];
+}
+
+@end

BCVideoFilter/BCFilters/BCSepiaToneFilter.h

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+//
+//  BCSepiaToneFilter.h
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+#import "BCFilter.h"
+
+@interface BCSepiaToneFilter : BCFilter
+
+@end

BCVideoFilter/BCFilters/BCSepiaToneFilter.m

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+//
+//  BCSepiaToneFilter.m
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 9/5/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCSepiaToneFilter.h"
+
+@implementation BCSepiaToneFilter
+
+/**
+ *  棕色滤镜-CISepiaTone
+ *
+ *  @param image      处理前的图片
+ *  @param intentsity 强度
+ *
+ *  @return 滤镜处理后的图片
+ */
+- (CIImage *)sepiaToneWithImage:(CIImage *)ciImage
+                     intentsity:(CGFloat)intentsity
+{
+    CIFilter *filter = [CIFilter filterWithName:@"CISepiaTone"];
+    [filter setValue:ciImage forKey:kCIInputImageKey];
+    if (intentsity >= 0 && intentsity <= 1) {
+        [filter setValue:@(intentsity) forKey:@"inputIntensity"];
+    }
+    CIImage *outPutImg = [filter outputImage];
+    return outPutImg;
+}
+
+/**
+ *  重写函数
+ *
+ *  @param image 处理前的图片
+ *
+ *  @return 处理后的图片
+ */
+- (CIImage *)getFilterHanldeImage:(CIImage *)image
+{
+    return [self sepiaToneWithImage:image intentsity:0.8];
+}
+
+@end

BCVideoFilter/BCGLKView.h

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+//
+//  BCGLKView.h
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 8/24/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import <GLKit/GLKit.h>
+
+@interface BCGLKView : GLKView
+
+@property (strong, nonatomic) CIImage * image;
+
+@property GLfloat preferredRotation;
+@property CGSize presentationRect;
+
+@end

BCVideoFilter/BCGLKView.m

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+//
+//  BCCoreImageView.m
+//  BCVideoFilterDemo
+//
+//  Created by 陈明标 on 8/19/16.
+//  Copyright © 2016 陈明标. All rights reserved.
+//
+
+#import "BCGLKView.h"
+
+#import <GLKit/GLKit.h>
+
+@interface BCGLKView () {
+    CIContext *coreImageContext;
+}
+
+@end
+
+@implementation BCGLKView
+
+- (instancetype) initWithFrame:(CGRect)frame {
+
+    self = [super initWithFrame:frame];
+
+    if (self) {
+        EAGLContext *context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+        self = [self initWithFrame:frame context:context];
+    }
+
+    return self;
+}
+
+- (instancetype) initWithFrame:(CGRect)frame context:(EAGLContext *)context {
+    self = [super initWithFrame:frame context:context];
+
+    if (self) {
+        coreImageContext = [CIContext contextWithEAGLContext:context];
+        [self setEnableSetNeedsDisplay:false];
+    }
+
+    return self;
+}
+
+- (void) drawRect:(CGRect)rect {
+
+    // 构造解码比例
+    CGRect origninalRect = CGRectMake(0, 260, 760, 520);
+
+    // 获取比例屏幕相对比例
+//    CGFloat widthScale  = (rect.size.width / origninalRect.size.width) * 2;
+//    CGFloat heightScale = (rect.size.height / origninalRect.size.height) * 2;
+
+//    CGRect destRect = CGRectApplyAffineTransform(origninalRect, CGAffineTransformMakeScale(widthScale, heightScale));
+    [coreImageContext drawImage:self.image inRect:origninalRect fromRect:self.image.extent];
+
+}
+
+@end
+