Method: Magick::Image#equalize_channel

Defined in:
ext/RMagick/rmimage.c

#equalize_channel(*args) ⇒ Object

Call EqualizeImageChannel.

Ruby usage:

- @verbatim Image#equalize_channel @endverbatim
- @verbatim Image#equalize_channel(channel) @endverbatim
- @verbatim Image#equalize_channel(channel, ...) @endverbatim

Notes:

- Default channel is AllChannels

Parameters:

  • argc —

    number of input arguments

  • argv —

    array of input arguments

  • self —

    this object

Returns:

  • a new image

[View source]

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# File 'ext/RMagick/rmimage.c', line 5611

VALUE
Image_equalize_channel(int argc, VALUE *argv, VALUE self)
{
#if defined(HAVE_EQUALIZEIMAGECHANNEL)
    Image *image, *new_image;
    ExceptionInfo exception;
    ChannelType channels;

    image = rm_check_destroyed(self);
    channels = extract_channels(&argc, argv);
    if (argc > 0)
    {
        raise_ChannelType_error(argv[argc-1]);
    }

    new_image = rm_clone_image(image);

    GetExceptionInfo(&exception);

    (void) EqualizeImageChannel(new_image, channels);

    rm_check_image_exception(new_image, DestroyOnError);
    (void) DestroyExceptionInfo(&exception);

    return rm_image_new(new_image);
#else
    argc = argc;
    argv = argv;
    self = self;
    rm_not_implemented();
    return(VALUE) 0;
#endif
}