leafo / magick Goto Github PK

On my machine, resample.h file is in /usr/include/ImageMagic-6/magick directory:

root@281ff7a9897e:/home/openresty# find / -name 'resample.h'
/usr/include/ImageMagick-6/magick/resample.h

Here my output of command that get_flags function uses:

root@281ff7a9897e:/home/openresty# pkg-config --cflags --libs MagickWand
-fopenmp -DMAGICKCORE_HDRI_ENABLE=0 -DMAGICKCORE_QUANTUM_DEPTH=16 -fopenmp -DMAGICKCORE_HDRI_ENABLE=0 -DMAGICKCORE_QUANTUM_DEPTH=16 -I/usr/include/x86_64-linux-gnu//ImageMagick-6 -I/usr/include/ImageMagick-6 -I/usr/include/x86_64-linux-gnu//ImageMagick-6 -I/usr/include/ImageMagick-6 -lMagickWand-6.Q16 -lMagickCore-6.Q16

As you can see, required directory is the second, while only first include path is used by get_filters method. So it need to be improved to search for all include path and not only the first.

When I try to load this module. It gives me below error.
loop or previous error loading module 'magick'

Does magick support thumbnailing the whole gif image with multiple frames?

This line sometimes (when testing a fair amount of load) gives an error attempting to index a nil value.
line 162
local lname = get_flags():match("-l(MagickWand[^%s]*)")

I've added the following to see what gave the issue:

if (get_flags() == nil) then return error("Failed to load MagickWand ") end

And indeed this error gets returned, indicating get_flags() is nil.

What could be the problem here?

is there a method that returns the bit depth? particularly since pixel values are returned as doubles from 0 to 1, getting the actual pixel value back as an integer requires this.

Documentation:
img:composite(source, compose, x, y)

Code:
composite = function(self, blob, x, y, opstr)

Documentation should be:
img:composite(source,x,y,compose)

How to install with CentOS 6.6
Online production environment is CentOS 6.6, not ubuntu / Debian

So I was attempting to create and edit png images on the fly with magick, but I found that neither the magick.new or the magick.new_image function existed.

Would you like me to take a crack at adding them in a PR? I am not familiar with moon or the busted system.

For anyone looking for a really poor performance workaround using os.execute and imagemagick's convert, you can use this:

__tmp = '/tmp/pico2png.temp.png'
function new_image(w,h)
  os.execute('convert -size '..w.."x"..h..' xc:white '..__tmp)
  local png,err = magick.load_image(__tmp)
  return png,err
end
__points = {}
__count = 0
function set_pixel(x,y,r,g,b)
  table.insert(__points,"fill rgb("..r..","..g..","..b..") point "..x..","..y.." ")
  if __count > 2^12 then
    __flush_pixels()
    __count = 0
  end
  __count = __count + 1
end
function __flush_pixels()
  os.execute("convert -draw '"..table.concat(__points).."' "..__tmp.." "..__tmp)
  __points = {}
end
-- run this before reading information about your image object.
function __post()
  __flush_pixels()
  return magick.load_image(__tmp)
end

I randomly will get this error when doing a simple require of this magick library

lua entry thread aborted: runtime error: /usr/local/share/lua/5.1/magick/init.lua:148: attempt to index a nil value

If I refresh the page, everything will be fine again.

I am able to run MagickWand-config from console.

Any idea why this would happen?

Hi guys,

when calling the thumb function with an webp image an error is raised. Can anyone tell whats wrong ?

im running it inside a docker container:

Dockerfile:

`FROM openresty/openresty:bionic

RUN apt-get update && apt-get install -y libmagickwand-dev libgraphicsmagick1-dev
RUN /usr/local/openresty/luajit/bin/luarocks install magick`

root@a96b53ba6d5c:/# apt-cache policy libmagickwand-dev libgraphicsmagick1-dev
libmagickwand-dev:
Installed: 8:6.9.7.4+dfsg-16ubuntu6.11
Candidate: 8:6.9.7.4+dfsg-16ubuntu6.11
Version table:
*** 8:6.9.7.4+dfsg-16ubuntu6.11 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
100 /var/lib/dpkg/status
8:6.9.7.4+dfsg-16ubuntu6 500
500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
libgraphicsmagick1-dev:
Installed: 1.3.28-2ubuntu0.1
Candidate: 1.3.28-2ubuntu0.1
Version table:
*** 1.3.28-2ubuntu0.1 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
500 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages
100 /var/lib/dpkg/status
1.3.28-2 500
500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages

Version:

openresty/1.19.9.1
built by gcc 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
OS: Linux 5.10.25-linuxkit

serve_image.lua:

`-- resize the image
local magick = require("magick")
magick.thumb(source_fname, size, dest_fname)

ngx.exec(ngx.var.request_uri)`

the error:

2021/11/11 10:45:48 [error] 12#12: *3 lua entry thread aborted: runtime error: /usr/local/openresty/luajit/share/lua/5.1/magick/thumb.lua:59: unable to open file /tmp/magick-126rH8Q2ow8ZUn': No such file or directory @ error/constitute.c/ReadImage/544
images_1 | stack traceback:
images_1 | coroutine 0:
images_1 | [C]: in function 'assert'
images_1 | /usr/local/openresty/luajit/share/lua/5.1/magick/thumb.lua:59: in function 'thumb'
images_1 | /serve_image.lua:61: in main chunk, client: 172.20.0.1, server: , request: "GET /YmNiMGI2NzBi/50x50/1656955fcd7fbcaf8ed861f4af9b25b6_36.webp HTTP/1.1", host: "images.dev:81"
`

Can anyone help?
Thanks in advance

Mak

There's a couple of memory leaks when using ffi.string, because ffi.string makes a copy, you should free original string using MagickRelinquishMemory.

convert one.png two.png three.png -compose displace -composite cylinderCMD.png Hello @leafo I'm trying to convert this command into C and later on I want to use it in lua. For that I used below set of methods. Could you help me to do this? I wouldn't have to posted a C related question over here but my ultimate goal is to use it in lua so I did. And for detail information you can check this link.

MagickCompositeImage(wand, wand2, DisplaceCompositeOp,MagickFalse, 0, 0); MagickCompositeImage(wand, wand3, DisplaceCompositeOp,MagickFalse, 0, 0); MagickWriteImage(wand,"final.png");

When i add line to code

local magick = require("magick")

nginx log say:

2016/06/29 14:10:38 [info] 5#0: waitpid() failed (10: No child processes)
2016/06/29 14:10:39 [notice] 5#0: signal 17 (SIGCHLD) received

It is normal?

Hi,

i am mostly converting camera images that have EXIF information set. Generating jpg thumbs with dimensions 100x75, the image size is ~36KB, but when i strip the EXIF data, the file size reduces to 8KB. (imagemagick's convert -strip option) How do i do that with the lua bindings?

Best

It looks like Windows has 2 different DLLs that need to be taken into account. The current file structure of this lib doesn't really make it simple to get this working... https://github.com/clementfarabet/graphicsmagick/blob/master/Image.lua#L327-L336

Hi leafo,

Any idea when the current changes may be published to MoonRocks? The current version out there seems to be quite old. I'm currently just copying this file from here to use the strip function on my images. If you need help testing to ensure a clean publish, I may be able to pitch on too.

Thanks!

image.get_pixel is very handy to read a pixel but there is no way to write a pixel! I'm trying to batch manipulate a bunch of images so I really need the ability to set pixels..

Using lapis framework i need to send an image created on-the-fly

local magick = require("magick")
local ngx = ngx
return function(self)
    local str_img = "iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAFUlEQVR42mP8z8BQz0AEYBxVSF+FABJADveWkH6oAAAAAElFTkSuQmCC"
    local img = magick.load_image_from_blob(ngx.decode_base64(str_img))
    ngx.header["content-type"] = "image/png"
   // HERE, HOW TO SEND THE  IMAGE TO BROWSER ?
    img:destroy()
end

in addition to individual pixel access with get_pixel() is it possible to add a feature that returns an array of pixels using the

GetAuthenticPixels
GetAuthenticPixelQueue

route?

`
local magick = require "magick"

local bg = magick.load_image("bg.png")
local compose = magick.load_image("h1.gif")
bg:composite(compose, 1000, 0, "XorCompositeOp")
compose:destroy()

bg:write("bg.png")
bg:destroy()
`
The image gets drawn but in the incorrect position, it should be (1000, 0) but the result is (0, 0)
with magick.gmwand the program works as intended

log

$ luarocks install --local https://raw.githubusercontent.com/leafo/magick/master/magick-dev-1.rockspec
Using https://raw.githubusercontent.com/leafo/magick/master/magick-dev-1.rockspec... switching to 'build' mode
Cloning into 'magick'...
remote: Counting objects: 24, done.
remote: Compressing objects: 100% (19/19), done.
remote: Total 24 (delta 1), reused 14 (delta 0), pack-reused 0
Receiving objects: 100% (24/24), 52.74 KiB | 0 bytes/s, done.
Resolving deltas: 100% (1/1), done.
Checking connectivity... done.

Error: Build error: Failed installing magick/wand/data.lua in /home/vagrant/.luarocks/lib/luarocks/rocks-5.1/magick/dev-1/lua/magick/wand/data.lua

commenting out those lines in the rockspec solves it for me:

    -- ["magick.gmwand.lib"] = "magick/gmwand/lib.lua",
    -- ["magick.wand.data"] = "magick/wand/data.lua",

(but probably disables functionality)

I spend 3 work days trying to realize auto rotate by EXIF info function for this library.
But it is in the library!!!

Please, note this in documentation!
You can use img:auto_orient() function to rotate images by EXIF info!

And check file /usr/local/share/lua/5.1/magick/wand/image.lua before you begin make some new functionality!

I have problem with GIF thumbnailing. Now 'magick' use static image as thumbnail for gif, ok. But it takes the last frame, and sometimes its broken.

There are 2 attached files. The first one is a screenshot of the original last frame and theresult. The second attach is original gif file.

I love the magick project! :)
Especialy after a found auto_orient option.

But, whet i resize PDF file to PNG i got the last page. Why?
I really need the first!

And if it possable , it would be grate to get option as
convert source.pdf[0] output.jpeg

Now I have a requirement, to scan the image of some pixel, to ensure if it is an advertisement image..

Can you please specify the license?

The binary seems to have been renamed GraphicsMagickWand-config in debian/testing.
See here for the content of the package.

hi leafo!

 Because WebP lossless images are 26% smaller in size compared to PNGs,so i want to use webp format in lua to scale my image, can you give me some help?

After install
sudo apt-get install luajit
sudo apt-get install libmagickwand-dev
sudo apt-get install luarocks
luarocks install magick

here is error:
local _obj_0 = require("magick.wand.lib")

stack traceback:
[C]: in function 'require'
/usr/local/lib/lua/magick.lua:5: in main chunk
[C]: in function 'require'

I can't find magick.wand.lib in my system.
How to make it work?

In function get_blob:

  local blob = lib.MagickGetImageBlob(self.wand, len)

the blob is a detached one from the original image->blob, so it must be freed by hand or change the above line with:

  local blob = ffi.gc(lib.MagickGetImageBlob(self.wand, len), ffi.C.free)

I have been trying to implement MagickGetImageHistogram, so I have changed two files. below is my change.
image.lua

local len = ffi.new("size_t[?]", 5)
local t = handle_result(self, lib.MagickGetImageHistogram(self.wand, len))

lib.lua

ffi.cdef([[  typedef void MagickWand;
typedef void PixelWand;

typedef int MagickBooleanType;
typedef int ExceptionType;
typedef int ssize_t;
typedef int CompositeOperator;
typedef int GravityType;
typedef int OrientationType;
typedef int InterlaceType;
typedef char DistortMethod[];

void MagickWandGenesis();
MagickWand* NewMagickWand();

PixelWand **MagickGetImageHistogram(MagickWand *wand, size_t *number_colors);
]])

But when I called MagickGetImageHistogram function from image.lua, it always return bool true. I don't understand what I missed. In documentation it says

MagickGetImageHistogram() returns the image histogram as an array of PixelWand wands.

So how do I convert it to lua table?

I want to rotate image by lua , does the magick support ?

How can I make progressive images?

I use

local image = assert(magick.load_image('my_photo.jpg'))
image:set_interlace_scheme('PlaneInterlace')
ngx.say(image:get_blob())
ngx.exit(ngx.OK)

but this service http://highloadtools.com/progressivejpeg put no prograssive image.

http://www.imagemagick.org/Usage/crop/#border
Any chance we can get support for the border method?

Hi leafo,
I have a problem with two consecutive requests, this is my code

local img = assert(magick.load_image(image.jpg))
img:crop(250,250,360,130)
img:resize_and_crop(150, 100)

with this code output is a image with 1x1 pixel,
however, if I do this:

local img = assert(magick.load_image(image.jpg))
img:crop(250,250,360,130)
img = assert(magick.load_image_from_blob(get_blob()))
img:resize_and_crop(150, 100)

It works as expected, why?

Failed to load filter list, can't resize

maybe because of my imagemagick path? It's installed via homebrew

`local magick = require "magick"

local img = magick.load_image("white.ico")
local blob = img:get_blob()
local img2 = magick.load_image_from_blob(blob)
img2:write("test2.ico")`

error:

luajit: test2.lua:6: attempt to index local 'img2' (a nil value) stack traceback: test2.lua:6: in main chunk [C]: at 0x55d98ce58120

Works fine when I try it with a png format.
The icon is white and of size 1px and was created using GIMP.

Lua current version is 5.3.4 ; do you have any plan to support Lua newest version?

I have installed magick but when I try to access it, it gives me an error says magick not found.

2017/03/09 10:57:15 [error] 27432#0: *1 lua entry thread aborted: runtime error: ...tml/default/image-server-tutorial/magick-master/test.lua:1: module 'magick' not found:
no field package.preload['magick']
no file '/usr/local/openresty/site/lualib/magick.lua'
no file '/usr/local/openresty/site/lualib/magick/init.lua'
no file '/usr/local/openresty/lualib/magick.lua'
no file '/usr/local/openresty/lualib/magick/init.lua'
no file './magick.lua'
no file '/usr/local/openresty/luajit/share/luajit-2.1.0-beta2/magick.lua'
no file '/usr/local/share/lua/5.1/magick.lua'
no file '/usr/local/share/lua/5.1/magick/init.lua'
no file '/usr/local/openresty/luajit/share/lua/5.1/magick.lua'
no file '/usr/local/openresty/luajit/share/lua/5.1/magick/init.lua'
no file '/usr/local/openresty/site/lualib/magick.so'
no file '/usr/local/openresty/lualib/magick.so'
no file './magick.so'
no file '/usr/local/lib/lua/5.1/magick.so'
no file '/usr/local/openresty/luajit/lib/lua/5.1/magick.so'
no file '/usr/local/lib/lua/5.1/loadall.so'

above is my output. And when I checked "whereis magick", it gives me "magick: /usr/local/bin/magick".

currently

  MagickBooleanType MagickCompositeImage(MagickWand *wand,
    const MagickWand *source_wand,const CompositeOperator compose,
    const ssize_t x,const ssize_t y);

but by API docs must be

  MagickBooleanType MagickCompositeImage(MagickWand *wand,
    const MagickWand *source_wand,const CompositeOperator compose,
    const MagickBooleanType clip_to_self,
    const ssize_t x,const ssize_t y);

Hi,

can you integrate the trim function? i hacked it myself (copy of strip() function) but i'm not a lua programmer.

Thx

Sample output from luarocks search -allcan be found this gist

using LuaRocks 2.2.2 on OSX (installed via lua homebrew package)

Installation instructions is missing in README

I have no idea where to start.