PKG Add imageio (#919)

docs/changelog.md

@@ -20,7 +20,7 @@
   [#846](https://github.com/iodide-project/pyodide/pull/846)
 - Updated to emscripten 1.38.34
   [#480](https://github.com/iodide-project/pyodide/pull/480)
-- New packages: freesasa, lxml, python-sat, traits, astropy, pillow
+- New packages: freesasa, lxml, python-sat, traits, astropy, pillow, scikit-image, imageio
 - Updated packages: numpy 1.15.4, pandas 1.0.5, matplotlib 3.3.3 among others.
 - Updated default `--ldflags` argument to `pyodide_build` scripts to equal what
   pyodide actually uses.

packages/imageio/meta.yaml

@@ -0,0 +1,14 @@
+package:
+  name: imageio
+  version: 2.9.0
+source:
+  sha256: 52ddbaeca2dccf53ba2d6dec5676ca7bc3b2403ef8b37f7da78b7654bb3e10f0
+  url: https://files.pythonhosted.org/packages/c3/73/f37f428748c4f10a7991ac5bff00f113a34bcc0d0a78957d6e1cdc29a94e/imageio-2.9.0.tar.gz
+  patches:
+  - patches/setitup.patch
+requirements:
+  run:
+  - numpy
+test:
+  imports:
+  - imageio

packages/imageio/patches/setitup.patch

@@ -0,0 +1,35 @@
+diff --git a/imageio/core/findlib.py b/imageio/core/findlib.py
+--- a/imageio/core/findlib.py
++++ b/imageio/core/findlib.py
+@@ -7,7 +7,6 @@
+ 
+ import os
+ import sys
+-import ctypes
+ 
+ 
+ LOCALDIR = os.path.abspath(os.path.dirname(__file__))
+@@ -95,6 +94,7 @@ def load_lib(exact_lib_names, lib_names, lib_dirs=None):
+ 
+     Returns ``(ctypes_library, library_path)``
+     """
++    import ctypes
+ 
+     # Checks
+     assert isinstance(exact_lib_names, list)
+
+diff --git a/imageio/plugins/__init__.py b/imageio/plugins/__init__.py
+index 7e26683..971f83e 100644
+--- a/imageio/plugins/__init__.py
++++ b/imageio/plugins/__init__.py
+@@ -84,8 +84,8 @@ from . import tifffile
+ from . import pillow
+ from . import grab
+ 
+-from . import freeimage
+-from . import freeimagemulti
++# from . import freeimage
++# from . import freeimagemulti
+ 
+ from . import ffmpeg
+ 

packages/imageio/test_imageio.py

@@ -0,0 +1,15 @@
+def test_imageio(selenium):
+    selenium.load_package(["numpy", "imageio"])
+    selenium.run(
+        r"""
+import numpy as np
+import imageio
+
+filename = "/tmp/foo.tif"
+image_in = np.random.randint(0, 65535, size=(100, 36), dtype=np.uint16)
+imageio.imwrite(filename, image_in)
+image_out = imageio.imread(filename)
+assert image_out.shape == (100, 36)
+np.testing.assert_equal(image_in, image_out)
+    """
+    )

packages/scikit-image/meta.yaml

@@ -15,6 +15,7 @@ requirements:
     - matplotlib
     - networkx
     - pillow
+    - imageio
     - pywavelets
 test:
   imports:

packages/scikit-image/patches/preferred_plugins.patch

@@ -5,7 +5,7 @@
  preferred_plugins = {
      # Default plugins for all types (overridden by specific types below).
 -    'all': ['imageio', 'pil', 'matplotlib', 'qt'],
-+    'all': ['pil', 'matplotlib'],
++    'all': ['imageio', 'pil', 'matplotlib'],
      'imshow': ['matplotlib'],
      'imshow_collection': ['matplotlib']
  }