def decode(self, file, filename):
dataref = self._get_data_ref(file, filename)
importer = ComponentInstance()
quicktime.GetGraphicsImporterForDataRef(dataref,
PointerDataHandlerSubType,
byref(importer))
if not importer:
raise ImageDecodeException(filename or file)
rect = Rect()
quicktime.GraphicsImportGetNaturalBounds(importer, byref(rect))
width = rect.right
height = rect.bottom
format, qtformat = self._get_formats()
buffer = (c_byte * (width * height * len(format)))()
world = GWorldPtr()
quicktime.QTNewGWorldFromPtr(byref(world), qtformat, byref(rect),
c_void_p(), c_void_p(), 0, buffer,
len(format) * width)
quicktime.GraphicsImportSetGWorld(importer, world, c_void_p())
result = quicktime.GraphicsImportDraw(importer)
quicktime.DisposeGWorld(world)
if result != 0:
raise ImageDecodeException(filename or file)
pitch = len(format) * width
return ImageData(width, height, format, buffer, -pitch)
def decode(self, file, filename):
data = file.read()
handle = Handle()
dataref = Handle()
carbon.PtrToHand(data, byref(handle), len(data))
carbon.PtrToHand(byref(handle), byref(dataref), sizeof(Handle))
importer = ComponentInstance()
quicktime.GetGraphicsImporterForDataRef(dataref,
HandleDataHandlerSubType,
byref(importer))
rect = Rect()
quicktime.GraphicsImportGetNaturalBounds(importer, byref(rect))
width = rect.right
height = rect.bottom
# TODO choose 24 bit where appropriate.
if sys.byteorder == 'big':
format = 'ARGB'
qtformat = k32ARGBPixelFormat
else:
format = 'BGRA'
qtformat = k32BGRAPixelFormat
buffer = (c_byte * (width * height * len(format)))()
world = GWorldPtr()
quicktime.QTNewGWorldFromPtr(byref(world), qtformat, byref(rect),
c_void_p(), c_void_p(), 0, buffer,
len(format) * width)
quicktime.GraphicsImportSetGWorld(importer, world, c_void_p())
quicktime.GraphicsImportDraw(importer)
quicktime.DisposeGWorld(world)
pitch = len(format) * width
return ImageData(width, height, format, buffer, -pitch)