recipe: Pillow 12.3.0 links libtiff

recipes/pillow/meta.yaml

@@ -1,11 +1,11 @@
 package:
   name: Pillow
-  version: "12.2.0"
+  version: "12.3.0"
 
 requirements:
   # PNG support is internal: libpng is not used.
   #
-  # All three are linked STATICALLY into the extensions on iOS and dynamically on
+  # All four are linked STATICALLY into the extensions on iOS and dynamically on
   # Android, so where they belong differs by platform. Under `host` they become a
   # runtime Requires-Dist and every consuming app installs the wheel; on iOS that
   # is ~16 MB of .a already folded into _imaging.so / _webp.so and unloadable at
@@ -17,11 +17,13 @@ requirements:
     - flet-libjpeg 3.0.90
     - flet-libfreetype 2.13.3
     - flet-libwebp 1.6.0
+    - flet-libtiff 4.7.0
 # {% else %}
   host_build:
     - flet-libjpeg 3.0.90
     - flet-libfreetype 2.13.3
     - flet-libwebp 1.6.0
+    - flet-libtiff 4.7.0
 # {% endif %}
 
 # {% if not version or version >= (12,0,0) %}
@@ -41,7 +43,7 @@ patches:
 # {% endif %}
 
 build:
-  number: 2
+  number: 1
   script_env:
 # {% if sdk == 'android' %}
     # pillow's setup.py manually probes `self.compiler.{include,library}_dirs`

recipes/pillow/tests/test_pillow.py

@@ -197,3 +197,43 @@ def test_webp_animation_encode():
     for i, want in enumerate([(255, 0, 0), (0, 255, 0), (0, 0, 255)]):
         rt.seek(i)
         assert rt.convert("RGB").getpixel((4, 4)) == want
+
+
+def test_libtiff_available():
+    """libtiff is linked: Pillow lists it as a codec."""
+    from PIL import features
+
+    assert features.check("libtiff") is True
+    assert "libtiff" in features.get_supported_codecs()
+
+
+def test_tiff_jpeg_roundtrip():
+    """Write and decode JPEG-compressed TIFFs (compression 7), RGB and RGBA."""
+    from PIL import Image
+
+    for mode, colour in (("RGB", (200, 40, 40)), ("RGBA", (40, 200, 40, 128))):
+        src = Image.new(mode, (64, 48), colour)
+        out = io.BytesIO()
+        src.save(out, "TIFF", compression="jpeg")
+
+        rt = Image.open(io.BytesIO(out.getvalue()))
+        assert rt.tag_v2[259] == 7, f"{mode}: compression tag {rt.tag_v2[259]}"
+        rt.load()  # where a build without libtiff raises "decoder libtiff not available"
+        assert rt.mode == mode
+        got = rt.getpixel((32, 24))
+        assert all(abs(g - w) <= 8 for g, w in zip(got, colour)), f"{mode}: {got}"
+
+
+def test_tiff_lossless_compressions_roundtrip():
+    """LZW, deflate and PackBits TIFFs round-trip exactly."""
+    from PIL import Image
+
+    src = Image.new("RGB", (16, 16))
+    src.putdata([(x * 16, y * 16, 0) for y in range(16) for x in range(16)])
+
+    for compression in ("tiff_lzw", "tiff_adobe_deflate", "packbits"):
+        out = io.BytesIO()
+        src.save(out, "TIFF", compression=compression)
+        rt = Image.open(io.BytesIO(out.getvalue()))
+        assert rt.info["compression"] == compression
+        assert rt.tobytes() == src.tobytes(), compression