Possible to do Command in iOS ImageMagick?

[kissfro]

I have:

 MagickWandGenesis();
MagickWand *wand = NewMagickWand();
NSData *data = UIImagePNGRepresentation(self.originalImage);
MagickReadImageBlob(wand, [data bytes], [data length]);

int arg_count = 3;
char *args[] = { "-ordered", "-dither", "h4x4a", NULL};

ImageInfo *image_info = AcquireImageInfo();
ExceptionInfo *exception = AcquireExceptionInfo();

MagickBooleanType status = ConvertImageCommand(image_info, arg_count, args, NULL, exception);

if (exception->severity != UndefinedException)
{
    status = MagickTrue;
    CatchException(exception);
}

if (status == MagickFalse)
{
    NSLog(@"FAIL");
}

size_t my_size;
unsigned char * my_image = MagickGetImageBlob(wand, &my_size);
NSData *outData = [[NSData alloc] initWithBytes:my_image length:my_size];
free(my_image);

self.imageView.image = [[UIImage alloc] initWithData:outData];

image_info=DestroyImageInfo(image_info);
exception=DestroyExceptionInfo(exception);
DestroyMagickWand(wand);
MagickWandTerminus();

And it doesn't work. Have tried everything, was wondering if there is an example somewhere.

[AcidicSkittles]

What exactly are you trying to accomplish?

[kissfro]

@AcidicSkittles In this code I'm just trying to execute a basic command and apply a simple halftone pattern on a UIImage. Ultimately, I'm trying to build up to be able to implement this command:

convert parrots_med.png -set option:distort:viewport '%wx%h+0+0' \ -colorspace CMYK -separate null: \ ( -size 2x2 xc: ( +clone -negate ) \ +append ( +clone -negate ) -append ) \ -virtual-pixel tile -filter gaussian \ ( +clone -distort SRT 2,60 ) +swap \ ( +clone -distort SRT 2,30 ) +swap \ ( +clone -distort SRT 2,45 ) +swap \ ( +clone -distort SRT 2,0 -blur 0x0.7 ) +swap +delete \ -compose Overlay -layers composite \ -set colorspace CMYK -combine -colorspace RGB \ offset_parrots.png

Do you know if this is even possible with ImageMagick iOS?

[AcidicSkittles]

I don't know if it's possible to convert a command line to something that image magick on ios can interpret. you might be best off digging through the list of api functions here http://www.imagemagick.org/api/magick-image.php and finding what you're trying to do

[marforic]

Hi, you should convert the command line into the correct API calls.

Best

~C

On Monday, May 5, 2014, kissfro notifications@github.com wrote:

@AcidicSkittles https://github.com/AcidicSkittles In this code I'm just trying to execute a basic command and apply a simple halftone pattern on a UIImage. Ultimately, I'm trying to build up to be able to implement this command:

convert parrots_med.png -set option:distort:viewport '%wx%h+0+0' \ -colorspace CMYK -separate null: \ ( -size 2x2 xc: ( +clone -negate ) \ +append ( +clone -negate ) -append ) \ -virtual-pixel tile -filter gaussian \ ( +clone -distort SRT 2,60 ) +swap \ ( +clone -distort SRT 2,30 ) +swap \ ( +clone -distort SRT 2,45 ) +swap \ ( +clone -distort SRT 2,0 -blur 0x0.7 ) +swap +delete \ -compose Overlay -layers composite \ -set colorspace CMYK -combine -colorspace RGB \ offset_parrots.png

Do you know if this is even possible with ImageMagick iOS?

— Reply to this email directly or view it on GitHubhttps://github.com/marforic/imagemagick_lib_iphone/issues/11#issuecomment-42207428 .

System Security Group ETH Zurich CNB F 100.5 Universitätsstrasse 6 8092 Zurich SWITZERLAND

Phone: +41 44 633 76 99 E-Mail: maclaudi@inf.ethz.ch Web: http://www.syssec.ethz.ch/people/maclaudi

[kissfro]

Thanks for your feedback guys.