/**
* Type are:
* - Uniform 0
* - Gaussian 1
* - Multiplicative 2
* - Impulse 3
* - Laplacian 4
* - Poisson 5
*/
Handle<Value> MerlinImage::AddNoiseImage(const Arguments& args) {
HandleScope scope;
MagickWand* wand = MerlinImage::ReadImage( ObjectWrap::Unwrap<MerlinImage>(args.This()) );
const int type = args[0]->IntegerValue();
NoiseType t;
switch(type) {
case 0:
t = UniformNoise;
break;
case 1:
t = GaussianNoise;
break;
case 2:
t = MultiplicativeGaussianNoise;
break;
case 3:
t = ImpulseNoise;
break;
case 4:
t = LaplacianNoise;
break;
case 5:
t = PoissonNoise;
break;
}
MagickAddNoiseImage(wand, t);
return scope.Close(MerlinImage::WriteImage(wand));
}
MagickBooleanType MagickAddNoiseImageChannel(MagickWand *wand,const ChannelType channel,const NoiseType noise_type) {
MagickBooleanType status;
ChannelType previous_channel_mask;
if (channel != UndefinedChannel) {
previous_channel_mask = MagickSetImageChannelMask(wand, channel);
}
//TODO - what is the value meant to be?
status = MagickAddNoiseImage(wand, noise_type, 1.0);
if (channel != UndefinedChannel) {
(void) MagickSetImageChannelMask(wand, previous_channel_mask);
}
return status;
}