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/* FreeJ
* (c) Copyright 2009 Andrea Guzzo <xant@dyne.org>
*
* This source code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Public License as published
* by the Free Software Foundation; either version 3 of the License,
* or (at your option) any later version.
*
* This source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* Please refer to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along with
* this source code; if not, write to:
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#import <CIAlphaFade.h>
@implementation CIAlphaFade
static CIKernel *alphaFadeKernel = nil;
- (id)init
{
if(alphaFadeKernel == nil)
{
NSBundle *bundle = [NSBundle bundleForClass: [self class]];
NSString *code = [NSString stringWithContentsOfFile: [bundle
pathForResource: @"CIAlphaFade"
ofType: @"cikernel"]];
NSArray *kernels = [CIKernel kernelsWithString: code];
alphaFadeKernel = [[kernels objectAtIndex:0] retain];
}
return [super init];
}
- (NSDictionary *)customAttributes
{
return [NSDictionary dictionaryWithObjectsAndKeys:
[NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithDouble: 0.0], kCIAttributeMin,
[NSNumber numberWithDouble: 1.0], kCIAttributeMax,
[NSNumber numberWithDouble: 0.0], kCIAttributeSliderMin,
[NSNumber numberWithDouble: 1.0], kCIAttributeSliderMax,
[NSNumber numberWithDouble: 0.5], kCIAttributeDefault,
[NSNumber numberWithDouble: 0.0], kCIAttributeIdentity,
kCIAttributeTypeScalar, kCIAttributeType,
nil], @"outputOpacity",
nil];
}
- (CIImage *)outputImage
{
CISampler *src = [CISampler samplerWithImage: inputImage];
return [self apply: alphaFadeKernel, src, outputOpacity, nil];
}
+ (void)initialize
{
[CIFilter registerFilterName: @"CIAlphaFadeBlendMode"
constructor: self
classAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
@"Fade Alpha", kCIAttributeFilterDisplayName,
[NSArray arrayWithObjects:
kCICategoryColorAdjustment, kCICategoryVideo,
kCICategoryStillImage,kCICategoryInterlaced,
kCICategoryNonSquarePixels,nil], kCIAttributeFilterCategories,
nil]
];
}
+ (CIFilter *)filterWithName: (NSString *)name
{
CIFilter *filter;
filter = [[self alloc] init];
return [filter autorelease];
}
@end
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