Esempio n. 1
0
    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)
Esempio n. 2
0
    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)