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from pyglet.libs.win32.com import pIUnknown
from pyglet.image import *
from pyglet.image.codecs import *
from pyglet.libs.win32.constants import *
from pyglet.libs.win32.types import *
from pyglet.libs.win32 import _kernel32 as kernel32
from pyglet.libs.win32 import _ole32 as ole32
gdiplus = windll.gdiplus
REAL = c_float
PixelFormat1bppIndexed = 196865
PixelFormat4bppIndexed = 197634
PixelFormat8bppIndexed = 198659
PixelFormat16bppGrayScale = 1052676
PixelFormat16bppRGB555 = 135173
PixelFormat16bppRGB565 = 135174
PixelFormat16bppARGB1555 = 397319
PixelFormat24bppRGB = 137224
PixelFormat32bppRGB = 139273
PixelFormat32bppARGB = 2498570
PixelFormat32bppPARGB = 925707
PixelFormat48bppRGB = 1060876
PixelFormat64bppARGB = 3424269
PixelFormat64bppPARGB = 29622286
PixelFormatMax = 15
ImageLockModeRead = 1
ImageLockModeWrite = 2
ImageLockModeUserInputBuf = 4
PropertyTagFrameDelay = 0x5100
class GdiplusStartupInput(Structure):
_fields_ = [
('GdiplusVersion', c_uint32),
('DebugEventCallback', c_void_p),
('SuppressBackgroundThread', BOOL),
('SuppressExternalCodecs', BOOL)
]
class GdiplusStartupOutput(Structure):
_fields = [
('NotificationHookProc', c_void_p),
('NotificationUnhookProc', c_void_p)
]
class BitmapData(Structure):
_fields_ = [
('Width', c_uint),
('Height', c_uint),
('Stride', c_int),
('PixelFormat', c_int),
('Scan0', POINTER(c_byte)),
('Reserved', POINTER(c_uint))
]
class Rect(Structure):
_fields_ = [
('X', c_int),
('Y', c_int),
('Width', c_int),
('Height', c_int)
]
class PropertyItem(Structure):
_fields_ = [
('id', c_uint),
('length', c_ulong),
('type', c_short),
('value', c_void_p)
]
INT_PTR = POINTER(INT)
UINT_PTR = POINTER(UINT)
gdiplus.GdipBitmapLockBits.restype = c_int
gdiplus.GdipBitmapLockBits.argtypes = [c_void_p, c_void_p, UINT, c_int, c_void_p]
gdiplus.GdipBitmapUnlockBits.restype = c_int
gdiplus.GdipBitmapUnlockBits.argtypes = [c_void_p, c_void_p]
gdiplus.GdipCloneStringFormat.restype = c_int
gdiplus.GdipCloneStringFormat.argtypes = [c_void_p, c_void_p]
gdiplus.GdipCreateBitmapFromScan0.restype = c_int
gdiplus.GdipCreateBitmapFromScan0.argtypes = [c_int, c_int, c_int, c_int, POINTER(BYTE), c_void_p]
gdiplus.GdipCreateBitmapFromStream.restype = c_int
gdiplus.GdipCreateBitmapFromStream.argtypes = [c_void_p, c_void_p]
gdiplus.GdipCreateFont.restype = c_int
gdiplus.GdipCreateFont.argtypes = [c_void_p, REAL, INT, c_int, c_void_p]
gdiplus.GdipCreateFontFamilyFromName.restype = c_int
gdiplus.GdipCreateFontFamilyFromName.argtypes = [c_wchar_p, c_void_p, c_void_p]
gdiplus.GdipCreateMatrix.restype = None
gdiplus.GdipCreateMatrix.argtypes = [c_void_p]
gdiplus.GdipCreateSolidFill.restype = c_int
gdiplus.GdipCreateSolidFill.argtypes = [c_int, c_void_p] # ARGB
gdiplus.GdipDisposeImage.restype = c_int
gdiplus.GdipDisposeImage.argtypes = [c_void_p]
gdiplus.GdipDrawString.restype = c_int
gdiplus.GdipDrawString.argtypes = [c_void_p, c_wchar_p, c_int, c_void_p, c_void_p, c_void_p, c_void_p]
gdiplus.GdipGetFamilyName.restype = c_int
gdiplus.GdipGetFamilyName.argtypes = [LONG_PTR, c_wchar_p, c_wchar]
gdiplus.GdipFlush.restype = c_int
gdiplus.GdipFlush.argtypes = [c_void_p, c_int]
gdiplus.GdipGetFontCollectionFamilyCount.restype = c_int
gdiplus.GdipGetFontCollectionFamilyCount.argtypes = [c_void_p, INT_PTR]
gdiplus.GdipGetFontCollectionFamilyList.restype = c_int
gdiplus.GdipGetFontCollectionFamilyList.argtypes = [c_void_p, INT, c_void_p, INT_PTR]
gdiplus.GdipGetImageDimension.restype = c_int
gdiplus.GdipGetImageDimension.argtypes = [c_void_p, POINTER(REAL), POINTER(REAL)]
gdiplus.GdipGetImageGraphicsContext.restype = c_int
gdiplus.GdipGetImageGraphicsContext.argtypes = [c_void_p, c_void_p]
gdiplus.GdipGetImagePixelFormat.restype = c_int
gdiplus.GdipGetImagePixelFormat.argtypes = [c_void_p, c_void_p]
gdiplus.GdipGetPropertyItem.restype = c_int
gdiplus.GdipGetPropertyItem.argtypes = [c_void_p, c_uint, c_uint, c_void_p]
gdiplus.GdipGetPropertyItemSize.restype = c_int
gdiplus.GdipGetPropertyItemSize.argtypes = [c_void_p, c_uint, UINT_PTR]
gdiplus.GdipGraphicsClear.restype = c_int
gdiplus.GdipGraphicsClear.argtypes = [c_void_p, c_int] # ARGB
gdiplus.GdipImageGetFrameCount.restype = c_int
gdiplus.GdipImageGetFrameCount.argtypes = [c_void_p, c_void_p, UINT_PTR]
gdiplus.GdipImageGetFrameDimensionsCount.restype = c_int
gdiplus.GdipImageGetFrameDimensionsCount.argtypes = [c_void_p, UINT_PTR]
gdiplus.GdipImageGetFrameDimensionsList.restype = c_int
gdiplus.GdipImageGetFrameDimensionsList.argtypes = [c_void_p, c_void_p, UINT]
gdiplus.GdipImageSelectActiveFrame.restype = c_int
gdiplus.GdipImageSelectActiveFrame.argtypes = [c_void_p, c_void_p, UINT]
gdiplus.GdipMeasureString.restype = c_int
gdiplus.GdipMeasureString.argtypes = [c_void_p, c_wchar_p, c_int, c_void_p, c_void_p, c_void_p, c_void_p, INT_PTR, INT_PTR]
gdiplus.GdipNewPrivateFontCollection.restype = c_int
gdiplus.GdipNewPrivateFontCollection.argtypes = [c_void_p]
gdiplus.GdipPrivateAddMemoryFont.restype = c_int
gdiplus.GdipPrivateAddMemoryFont.argtypes = [c_void_p, c_void_p, c_int]
gdiplus.GdipSetPageUnit.restype = c_int
gdiplus.GdipSetPageUnit.argtypes = [c_void_p, c_int]
gdiplus.GdipSetStringFormatFlags.restype = c_int
gdiplus.GdipSetStringFormatFlags.argtypes = [c_void_p, c_int]
gdiplus.GdipSetTextRenderingHint.restype = c_int
gdiplus.GdipSetTextRenderingHint.argtypes = [c_void_p, c_int]
gdiplus.GdipStringFormatGetGenericTypographic.restype = c_int
gdiplus.GdipStringFormatGetGenericTypographic.argtypes = [c_void_p]
gdiplus.GdiplusShutdown.restype = None
gdiplus.GdiplusShutdown.argtypes = [POINTER(ULONG)]
gdiplus.GdiplusStartup.restype = c_int
gdiplus.GdiplusStartup.argtypes = [c_void_p, c_void_p, c_void_p]
class GDIPlusDecoder(ImageDecoder):
def get_file_extensions(self):
return ['.bmp', '.gif', '.jpg', '.jpeg', '.exif', '.png', '.tif', '.tiff']
def get_animation_file_extensions(self):
# TIFF also supported as a multi-page image; but that's not really an
# animation, is it?
return ['.gif']
def _load_bitmap(self, filename, file):
data = file.read()
# Create a HGLOBAL with image data
hglob = kernel32.GlobalAlloc(GMEM_MOVEABLE, len(data))
ptr = kernel32.GlobalLock(hglob)
memmove(ptr, data, len(data))
kernel32.GlobalUnlock(hglob)
# Create IStream for the HGLOBAL
self.stream = pIUnknown()
ole32.CreateStreamOnHGlobal(hglob, True, byref(self.stream))
# Load image from stream
bitmap = c_void_p()
status = gdiplus.GdipCreateBitmapFromStream(self.stream, byref(bitmap))
if status != 0:
self.stream.Release()
raise ImageDecodeException('GDI+ cannot load %r' % (filename or file))
return bitmap
@staticmethod
def _get_image(bitmap):
# Get size of image (Bitmap subclasses Image)
width = REAL()
height = REAL()
gdiplus.GdipGetImageDimension(bitmap, byref(width), byref(height))
width = int(width.value)
height = int(height.value)
# Get image pixel format
pf = c_int()
gdiplus.GdipGetImagePixelFormat(bitmap, byref(pf))
pf = pf.value
# Reverse from what's documented because of Intel little-endianness.
fmt = 'BGRA'
if pf == PixelFormat24bppRGB:
fmt = 'BGR'
elif pf == PixelFormat32bppRGB:
pass
elif pf == PixelFormat32bppARGB:
pass
elif pf in (PixelFormat16bppARGB1555, PixelFormat32bppPARGB,
PixelFormat64bppARGB, PixelFormat64bppPARGB):
pf = PixelFormat32bppARGB
else:
fmt = 'BGR'
pf = PixelFormat24bppRGB
# Lock pixel data in best format
rect = Rect()
rect.X = 0
rect.Y = 0
rect.Width = width
rect.Height = height
bitmap_data = BitmapData()
gdiplus.GdipBitmapLockBits(bitmap, byref(rect), ImageLockModeRead, pf, byref(bitmap_data))
# Create buffer for RawImage
buffer = create_string_buffer(bitmap_data.Stride * height)
memmove(buffer, bitmap_data.Scan0, len(buffer))
# Unlock data
gdiplus.GdipBitmapUnlockBits(bitmap, byref(bitmap_data))
return ImageData(width, height, fmt, buffer, -bitmap_data.Stride)
def _delete_bitmap(self, bitmap):
# Release image and stream
gdiplus.GdipDisposeImage(bitmap)
self.stream.Release()
def decode(self, filename, file):
if not file:
file = open(filename, 'rb')
bitmap = self._load_bitmap(filename, file)
image = self._get_image(bitmap)
self._delete_bitmap(bitmap)
return image
def decode_animation(self, filename, file):
if not file:
file = open(filename, 'rb')
bitmap = self._load_bitmap(filename, file)
dimension_count = c_uint()
gdiplus.GdipImageGetFrameDimensionsCount(bitmap, byref(dimension_count))
if dimension_count.value < 1:
self._delete_bitmap(bitmap)
raise ImageDecodeException('Image has no frame dimensions')
# XXX Make sure this dimension is time?
dimensions = (c_void_p * dimension_count.value)()
gdiplus.GdipImageGetFrameDimensionsList(bitmap, dimensions, dimension_count.value)
frame_count = c_uint()
gdiplus.GdipImageGetFrameCount(bitmap, dimensions, byref(frame_count))
prop_id = PropertyTagFrameDelay
prop_size = c_uint()
gdiplus.GdipGetPropertyItemSize(bitmap, prop_id, byref(prop_size))
prop_buffer = c_buffer(prop_size.value)
prop_item = cast(prop_buffer, POINTER(PropertyItem)).contents
gdiplus.GdipGetPropertyItem(bitmap, prop_id, prop_size.value, prop_buffer)
n_delays = prop_item.length // sizeof(c_long)
delays = cast(prop_item.value, POINTER(c_long * n_delays)).contents
frames = []
for i in range(frame_count.value):
gdiplus.GdipImageSelectActiveFrame(bitmap, dimensions, i)
image = self._get_image(bitmap)
delay = delays[i]
if delay <= 1:
delay = 10
frames.append(AnimationFrame(image, delay/100.))
self._delete_bitmap(bitmap)
return Animation(frames)
def get_decoders():
return [GDIPlusDecoder()]
def get_encoders():
return []
def init():
token = c_ulong()
startup_in = GdiplusStartupInput()
startup_in.GdiplusVersion = 1
startup_out = GdiplusStartupOutput()
gdiplus.GdiplusStartup(byref(token), byref(startup_in), byref(startup_out))
# Shutdown later?
# gdiplus.GdiplusShutdown(token)
init()
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