Initial commit.

--HG--
extra : convert_revision : svn%3Ac306627e-7827-47d3-bdf0-9a457c9553a1/trunk%402

pe/qt/modules/block/block.pyx

@@ -0,0 +1,39 @@
+cdef object getblock(object image):
+    cdef int width, height, pixel_count, red, green, blue, i, offset
+    cdef char *s
+    cdef unsigned char r, g, b
+    width = image.width()
+    height = image.height()
+    if width:
+        pixel_count = width * height
+        red = green = blue = 0
+        tmp = image.bits().asstring(image.numBytes())
+        s = tmp
+        for i in range(pixel_count):
+            offset = i * 3
+            r = s[offset]
+            g = s[offset + 1]
+            b = s[offset + 2]
+            red += r
+            green += g
+            blue += b
+        return (red // pixel_count, green // pixel_count, blue // pixel_count)
+    else:
+        return (0, 0, 0)
+
+def getblocks(image, int block_count_per_side):
+    cdef int width, height, block_width, block_height, ih, iw, top, left
+    width = image.width()
+    height = image.height()
+    if not width:
+        return []
+    block_width = max(width // block_count_per_side, 1)
+    block_height = max(height // block_count_per_side, 1)
+    result = []
+    for ih in range(block_count_per_side):
+        top = min(ih * block_height, height - block_height)
+        for iw in range(block_count_per_side):
+            left = min(iw * block_width, width - block_width)
+            crop = image.copy(left, top, block_width, block_height)
+            result.append(getblock(crop))
+    return result

pe/qt/modules/block/setup.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python
+
+from distutils.core import setup
+from distutils.extension import Extension
+from Cython.Distutils import build_ext
+
+setup(
+    cmdclass = {'build_ext': build_ext},
+    ext_modules = [Extension("_block", ["block.pyx"])]
+)