From aa2fcfe1a33ab68571ace7e49c32b32bb832efc6 Mon Sep 17 00:00:00 2001
From: Christopher Denter <christopher@kivy.org>
Date: Thu, 26 May 2011 10:25:42 +0200
Subject: [PATCH] osx core image: make it compile

---
 kivy/core/image/osxcoreimage.pyx | 121 +++++++++++++++++++++++++++++++
 setup.py                         |  11 +++
 2 files changed, 132 insertions(+)
 create mode 100644 kivy/core/image/osxcoreimage.pyx

diff --git a/kivy/core/image/osxcoreimage.pyx b/kivy/core/image/osxcoreimage.pyx
new file mode 100644
index 000000000..992bd3db9
--- /dev/null
+++ b/kivy/core/image/osxcoreimage.pyx
@@ -0,0 +1,121 @@
+from libcpp cimport bool
+
+ctypedef unsigned long size_t
+ctypedef signed long CFIndex
+
+cdef extern from "Python.h":
+    object PyString_FromStringAndSize(char *s, Py_ssize_t len)
+
+
+cdef extern from "CoreFoundation/CFBase.h":
+    ctypedef void *CFAllocatorRef
+
+
+cdef extern from "CoreFoundation/CFData.h":
+    ctypedef void *CFDataRef
+    # XXX
+    # char or int?
+    unsigned char * CFDataGetBytePtr(CFDataRef)
+
+#cdef extern from "CoreGraphics/CGDataProvider.h":
+cdef extern from "QuartzCore/QuartzCore.h":
+    ctypedef void *CGDataProviderRef
+    CFDataRef CGDataProviderCopyData(CGDataProviderRef)
+
+
+cdef extern from "CoreFoundation/CFURL.h":
+    ctypedef void *CFURLRef
+    # Not in the snippet, but I deem necessary:
+    #
+    # CFURLRef CFURLCreateFromFileSystemRepresentation (
+    #    CFAllocatorRef allocator,
+    #    const UInt8 *buffer,
+    #    CFIndex bufLen,
+    #    Boolean isDirectory
+    # );
+    CFURLRef CFURLCreateFromFileSystemRepresentation(CFAllocatorRef,
+                                                     unsigned char *,
+                                                     CFIndex,
+                                                     # XXX CORRECT?
+                                                     bool)
+
+
+cdef extern from "CoreFoundation/CFDictionary.h":
+    ctypedef void *CFDictionaryRef
+
+
+#cdef extern from "CoreGraphics/CGImage.h":
+cdef extern from "QuartzCore/QuartzCore.h":
+    ctypedef void *CGImageRef
+    CGDataProviderRef CGImageGetDataProvider(CGImageRef)
+    # guessing these, because of no wifi:
+    int CGImageGetWidth(CGImageRef)
+    int CGImageGetHeight(CGImageRef)
+    int CGImageGetAlphaInfo(CGImageRef)
+    int kCGImageAlphaNone
+
+
+#cdef extern from "ImageIO/CGImageSource.h":
+cdef extern from "QuartzCore/QuartzCore.h":
+    ctypedef void *CGImageSourceRef
+    CGImageSourceRef CGImageSourceCreateWithURL(CFURLRef,
+                                                CFDictionaryRef)
+    CGImageRef CGImageSourceCreateImageAtIndex(CGImageSourceRef,
+                                               size_t, CFDictionaryRef)
+
+
+def load_raw_image_data(bytes _url):
+    cdef CFURLRef url
+    url = CFURLCreateFromFileSystemRepresentation(NULL, <bytes> _url, len(_url), 0)
+
+    cdef CGImageSourceRef myImageSourceRef
+    # or maybe: UIImage* uiImage = [UIImage imageWithContentsOfFile:fullPath];
+    # see iphone3d book
+    myImageSourceRef = CGImageSourceCreateWithURL(url, NULL)
+    if myImageSourceRef == NULL:
+        print 'myImageSourceRef is NULL'
+        return None
+
+    cdef CGImageRef myImageRef
+    myImageRef = CGImageSourceCreateImageAtIndex (myImageSourceRef, 0, NULL)
+    if myImageRef == NULL:
+        print 'myImageRef is NULL'
+        return None
+
+    cdef int width = CGImageGetWidth(myImageRef)
+    cdef int height = CGImageGetHeight(myImageRef)
+    cdef int hasAlpha = CGImageGetAlphaInfo(myImageRef) != kCGImageAlphaNone
+
+    # correctly detect the image type !!!
+    imgtype = 'rgb'
+    typesize = 3
+    if hasAlpha > 0:
+        imgtype = 'rgba'
+        typesize = 4
+
+    cdef CFDataRef data
+    data = CGDataProviderCopyData(CGImageGetDataProvider(myImageRef))
+
+    r_data = PyString_FromStringAndSize(<char *>CFDataGetBytePtr(data),
+                    width * height * typesize)
+
+    # XXX clean image object
+
+    print 'Image:', _url, width, height, imgtype
+    return (width, height, imgtype, r_data)
+
+#
+# bool hasAlpha = CGImageGetAlphaInfo(cgImage) != kCGImageAlphaNone; CGColorSpaceRef colorSpace = CGImageGetColorSpace(cgImage); switch (CGColorSpaceGetModel(colorSpace)) {
+# case kCGColorSpaceModelMonochrome: description.Format =
+# hasAlpha ? TextureFormatGrayAlpha : TextureFormatGray; break;
+# case kCGColorSpaceModelRGB: description.Format =
+# Texture Formats and Types
+# |    189
+# }
+# hasAlpha ? TextureFormatRgba : TextureFormatRgb; break;
+# default: assert(!"Unsupported color space."); break;
+# } description.BitsPerComponent = CGImageGetBitsPerComponent(cgImage);
+# return description;
+#
+#
+
diff --git a/setup.py b/setup.py
index 5b0d61160..0eff7d657 100644
--- a/setup.py
+++ b/setup.py
@@ -180,6 +180,7 @@ if True:
         ext_files = [pyx]
         ext_libraries = libraries[:]
         ext_include_dirs = include_dirs[:]
+        ext_extra_compile_args = []
         ext_extra_link_args = extra_link_args[:]
 
         if pyx.endswith('sdl.pyx'):
@@ -188,6 +189,15 @@ if True:
             ext_libraries += sdl_libraries
             ext_include_dirs += sdl_includes
             ext_extra_link_args += sdl_extra_link_args
+
+        elif pyx.endswith('osxcoreimage.pyx'):
+            if platform != 'darwin':
+                continue
+            ext_extra_link_args += ['-framework', 'Cocoa']
+            ext_extra_link_args += ['-framework', 'Foundation']
+            ext_extra_link_args += ['-framework', 'QuartzCore']
+            ext_extra_compile_args += ['-isysroot', '/Developer/SDKs/MacOSX10.6.sdk']
+
         elif 'graphics' in pyx:
             ext_files += pxd_graphics
         else:
@@ -197,6 +207,7 @@ if True:
             module_name,
             ext_files,
             libraries=ext_libraries,
+            extra_compile_args=ext_extra_compile_args,
             include_dirs=ext_include_dirs,
             extra_link_args=ext_extra_link_args))