Method: Magick::Image#set_channel_depth

Defined in:
ext/RMagick/rmimage.cpp

#set_channel_depth(channel_arg, depth) ⇒ Object

Sets the depth of the image channel.

Parameters:

  • channel_arg (Magick::ChannelType) —

    the channel

  • depth (Numeric) —

    the depth

Returns:

  • self



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# File 'ext/RMagick/rmimage.cpp', line 12650

VALUE
Image_set_channel_depth(VALUE self, VALUE channel_arg, VALUE depth)
{
    Image *image;
    ChannelType channel;
    unsigned long channel_depth;
#if defined(IMAGEMAGICK_7)
    ExceptionInfo *exception;
#endif

    image = rm_check_frozen(self);

    VALUE_TO_ENUM(channel_arg, channel, ChannelType);
    channel_depth = NUM2ULONG(depth);

#if defined(IMAGEMAGICK_7)
    exception = AcquireExceptionInfo();
    BEGIN_CHANNEL_MASK(image, channel);
    GVL_STRUCT_TYPE(SetImageDepth) args = { image, channel_depth, exception };
    CALL_FUNC_WITHOUT_GVL(GVL_FUNC(SetImageDepth), &args);
    END_CHANNEL_MASK(image);
    CHECK_EXCEPTION();
    DestroyExceptionInfo(exception);
#else
    GVL_STRUCT_TYPE(SetImageChannelDepth) args = { image, channel, channel_depth };
    CALL_FUNC_WITHOUT_GVL(GVL_FUNC(SetImageChannelDepth), &args);
    rm_check_image_exception(image, RetainOnError);
#endif

    return self;
}