ElisCustomFilter.m

   1 //  Copyright (c) 2009 Yanagi Asakura
   2 //
   3 //  This software is provided 'as-is', without any express or implied
   4 //  warranty. In no event will the authors be held liable for any damages
   5 //  arising from the use of this software.
   6 //
   7 //  Permission is granted to anyone to use this software for any purpose,
   8 //  including commercial applications, and to alter it and redistribute it
   9 //  freely, subject to the following restrictions:
  10 //
  11 //  1. The origin of this software must not be misrepresented; you must not
  12 //  claim that you wrote the original software. If you use this software
  13 //  in a product, an acknowledgment in the product documentation would be
  14 //  appreciated but is not required.
  15 //
  16 //  2. Altered source versions must be plainly marked as such, and must not be
  17 //  misrepresented as being the original software.
  18 //
  19 //  3. This notice may not be removed or altered from any source
  20 //  distribution.
  21
  22 //
  23 //  ElisCustomFilter.m
  24 //  Elis
  25 //
  26 //  Created by 柳 on 09/09/02.
  27 //  Copyright 2009 Yanagi Entertainment. All rights reserved.
  28 //
  29
  30 #import "ElisCustomFilter.h"
  31
  32 @implementation ElisCustomFilter
  33
  34 static CIKernel* s_opacityKernel = nil;
  35
  36 - (id)init
  37 {
  38     if(s_opacityKernel == nil){
  39 //        NSBundle *bundle = [NSBundle bundleForClass:[self class]];
  40         NSBundle* bundle = [NSBundle mainBundle];
  41         NSString *code = [NSString stringWithContentsOfFile:[bundle pathForResource:@"ElisCoreImageKernel" ofType:@"cikernel"]];
  42         NSLog(code);
  43         NSArray *kernels = [CIKernel kernelsWithString:code];
  44         s_opacityKernel = [[kernels objectAtIndex:0] retain];
  45     }
  46
  47     return [super init];
  48 }
  49
  50 + (void)initialize
  51 {
  52     NSLog(@"Initializing Custom Filter ...");
  53
  54     [CIFilter registerFilterName:@"CHOpacity"
  55                      constructor:self
  56                  classAttributes:[NSDictionary dictionaryWithObjectsAndKeys:@"Change", kCIAttributeFilterDisplayName,
  57                                   [NSArray arrayWithObjects:kCICategoryColorAdjustment, kCICategoryVideo, kCICategoryStillImage,
  58                                    kCICategoryNonSquarePixels, nil], kCIAttributeFilterCategories, nil]];
  59 //                                  [NSDictionary dictionaryWithObjectsAndKeys:
  60 //                                   [NSNumber numberWithDouble:0.0], kCIAttributeMin,
  61 //                                   [NSNumber numberWithDouble:1.0], kCIAttributeMax,
  62 //                                   [NSNumber numberWithDouble:0.0], kCIAttributeSliderMin,
  63 //                                   [NSNumber numberWithDouble:1.0], kCIAttributeSliderMax,
  64 //                                   [NSNumber numberWithDouble:1.0], kCIAttributeDefault,
  65 //                                   [NSNumber numberWithDouble:1.0], kCIAttributeIdentity,
  66 //                                   kCIAttributeTypeScalar, kCIAttributeType, nil], @"inputOpacity", nil]];
  67 }
  68
  69 - (NSDictionary*)customAttributes
  70 {
  71     return [NSDictionary dictionaryWithObjectsAndKeys:
  72             [NSDictionary dictionaryWithObjectsAndKeys:
  73              [NSNumber numberWithDouble:0.0], kCIAttributeMin,
  74              [NSNumber numberWithDouble:1.0], kCIAttributeMax,
  75              [NSNumber numberWithDouble:0.0], kCIAttributeSliderMin,
  76              [NSNumber numberWithDouble:1.0], kCIAttributeSliderMax,
  77              [NSNumber numberWithDouble:1.0], kCIAttributeDefault,
  78              [NSNumber numberWithDouble:1.0], kCIAttributeIdentity,
  79              kCIAttributeTypeScalar, kCIAttributeType, nil], @"inputOpacity", nil];
  80 }
  81
  82 - (CIImage*)outputImage
  83 {
  84     CISampler *src = [CISampler samplerWithImage:inputImage];
  85
  86     return [self apply:s_opacityKernel, src, inputOpacity, kCIApplyOptionDefinition, [src definition], nil];
  87 }
  88
  89 + (CIFilter*)filterWithName:(NSString *)name
  90 {
  91     CIFilter *filter;
  92
  93     filter = [[self alloc] init];
  94     return [filter autorelease];
  95 }
  96
  97 @end