Difficult-Rocket/libs/pyglet/image/codecs/wic.py
shenjack d84b490b99
with more logger
Add | more formatter and some more

Fix | type mis match

sync pyglet

Enhance | logger with Template

add lib-not-dr as requirement

sync pyglet

sync pyglet

Add | add lto=yes to nuitka_build

just incase

sync pyglet

sync lib_not_dr

Remove | external requirement lib-not-dr

some logger

sync lib-not-dr

sync pyglet

sync lib-not-dr

sync lib-not-dr

sync pyglet

sync pyglet

Fix | console thread been block

Update DR rs and DR sdk

sync lib not dr

sync lib-not-dr

sync lib-not-dr

sync pyglet and lib-not-dr

sync pyglet 0.1.8

sync lib not dr

logger almost done?

almost!

sync pyglet (clicpboard support!)

sync lib not dr

sync lib not dr

color code and sync pyglet

do not show memory and progress building localy

sync pyglet

synclibs
2023-11-20 20:12:59 +08:00

637 lines
22 KiB
Python

from pyglet.image import *
from pyglet.image.codecs import *
from pyglet.libs.win32 import _kernel32 as kernel32
from pyglet.libs.win32 import _ole32 as ole32
from pyglet.libs.win32.constants import *
from pyglet.libs.win32.types import *
CLSID_WICImagingFactory1 = com.GUID(0xcacaf262, 0x9370, 0x4615, 0xa1, 0x3b, 0x9f, 0x55, 0x39, 0xda, 0x4c, 0xa)
CLSID_WICImagingFactory2 = com.GUID(0x317d06e8, 0x5f24, 0x433d, 0xbd, 0xf7, 0x79, 0xce, 0x68, 0xd8, 0xab, 0xc2)
# This is available with Windows 7 with a Platform Update, but unable to detect as it wasn't a version change to the OS,
# but a KB update. Available in atleast 8+.
if WINDOWS_8_OR_GREATER:
CLSID_WICImagingFactory = CLSID_WICImagingFactory2
else:
CLSID_WICImagingFactory = CLSID_WICImagingFactory1
WICBitmapCreateCacheOption = UINT
WICBitmapNoCache = 0
WICBitmapCacheOnDemand = 0x1
WICBitmapCacheOnLoad = 0x2
WICBITMAPCREATECACHEOPTION_FORCE_DWORD = 0x7fffffff
WICBitmapPaletteType = UINT
WICBitmapPaletteTypeCustom = 0
WICBitmapTransformOptions = UINT
WICBitmapTransformRotate0 = 0
WICBitmapTransformRotate90 = 0x1
WICBitmapTransformRotate180 = 0x2
WICBitmapTransformRotate270 = 0x3
WICBitmapTransformFlipHorizontal = 0x8
WICBitmapTransformFlipVertical = 0x10
WICBitmapDitherType = UINT
WICBitmapDitherTypeNone = 0
WICBitmapDitherTypeSolid = 0
WICBitmapDitherTypeOrdered4x4 = 0x1
WICBitmapDitherTypeOrdered8x8 = 0x2
WICBitmapDitherTypeOrdered16x16 = 0x3
WICBitmapDitherTypeSpiral4x4 = 0x4
WICBitmapDitherTypeSpiral8x8 = 0x5
WICBitmapDitherTypeDualSpiral4x4 = 0x6
WICBitmapDitherTypeDualSpiral8x8 = 0x7
WICBitmapDitherTypeErrorDiffusion = 0x8
WICBITMAPDITHERTYPE_FORCE_DWORD = 0x7fffffff
WICBITMAPTRANSFORMOPTIONS_FORCE_DWORD = 0x7fffffff
WICDecodeOptions = UINT
WICDecodeMetadataCacheOnDemand = 0
WICDecodeMetadataCacheOnLoad = 0x1
WICMETADATACACHEOPTION_FORCE_DWORD = 0x7fffffff
WICBitmapEncoderCacheOption = UINT
WICBitmapEncoderCacheInMemory = 0x0
WICBitmapEncoderCacheTempFile = 0x1
WICBitmapEncoderNoCache = 0x2
WICBITMAPENCODERCACHEOPTION_FORCE_DWORD = 0x7fffffff
# Different pixel formats.
REFWICPixelFormatGUID = POINTER(com.GUID)
GUID_WICPixelFormatDontCare = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x00)
GUID_WICPixelFormat1bppIndexed = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x01)
GUID_WICPixelFormat2bppIndexed = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x02)
GUID_WICPixelFormat4bppIndexed = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x03)
GUID_WICPixelFormat8bppIndexed = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x04)
GUID_WICPixelFormatBlackWhite = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x05)
GUID_WICPixelFormat2bppGray = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x06)
GUID_WICPixelFormat4bppGray = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x07)
GUID_WICPixelFormat8bppGray = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x08)
GUID_WICPixelFormat8bppAlpha = com.GUID(0xe6cd0116, 0xeeba, 0x4161, 0xaa, 0x85, 0x27, 0xdd, 0x9f, 0xb3, 0xa8, 0x95)
GUID_WICPixelFormat16bppBGR555 = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x09)
GUID_WICPixelFormat16bppBGR565 = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0a)
GUID_WICPixelFormat16bppBGRA5551 = com.GUID(0x05ec7c2b, 0xf1e6, 0x4961, 0xad, 0x46, 0xe1, 0xcc, 0x81, 0x0a, 0x87, 0xd2)
GUID_WICPixelFormat16bppGray = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0b)
GUID_WICPixelFormat24bppBGR = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0c)
GUID_WICPixelFormat24bppRGB = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d)
GUID_WICPixelFormat32bppBGR = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0e)
GUID_WICPixelFormat32bppBGRA = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0f)
GUID_WICPixelFormat32bppPBGRA = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x10)
GUID_WICPixelFormat32bppRGB = com.GUID(0xd98c6b95, 0x3efe, 0x47d6, 0xbb, 0x25, 0xeb, 0x17, 0x48, 0xab, 0x0c,
0xf1) # 7 platform update?
GUID_WICPixelFormat32bppRGBA = com.GUID(0xf5c7ad2d, 0x6a8d, 0x43dd, 0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9)
GUID_WICPixelFormat32bppPRGBA = com.GUID(0x3cc4a650, 0xa527, 0x4d37, 0xa9, 0x16, 0x31, 0x42, 0xc7, 0xeb, 0xed, 0xba)
GUID_WICPixelFormat48bppRGB = com.GUID(0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x15)
GUID_WICPixelFormat48bppBGR = com.GUID(0xe605a384, 0xb468, 0x46ce, 0xbb, 0x2e, 0x36, 0xf1, 0x80, 0xe6, 0x43, 0x13)
GUID_ContainerFormatBmp = com.GUID(0x0af1d87e, 0xfcfe, 0x4188, 0xbd, 0xeb, 0xa7, 0x90, 0x64, 0x71, 0xcb, 0xe3)
GUID_ContainerFormatPng = com.GUID(0x1b7cfaf4, 0x713f, 0x473c, 0xbb, 0xcd, 0x61, 0x37, 0x42, 0x5f, 0xae, 0xaf)
GUID_ContainerFormatIco = com.GUID(0xa3a860c4, 0x338f, 0x4c17, 0x91, 0x9a, 0xfb, 0xa4, 0xb5, 0x62, 0x8f, 0x21)
GUID_ContainerFormatJpeg = com.GUID(0x19e4a5aa, 0x5662, 0x4fc5, 0xa0, 0xc0, 0x17, 0x58, 0x02, 0x8e, 0x10, 0x57)
GUID_ContainerFormatTiff = com.GUID(0x163bcc30, 0xe2e9, 0x4f0b, 0x96, 0x1d, 0xa3, 0xe9, 0xfd, 0xb7, 0x88, 0xa3)
GUID_ContainerFormatGif = com.GUID(0x1f8a5601, 0x7d4d, 0x4cbd, 0x9c, 0x82, 0x1b, 0xc8, 0xd4, 0xee, 0xb9, 0xa5)
GUID_ContainerFormatWmp = com.GUID(0x57a37caa, 0x367a, 0x4540, 0x91, 0x6b, 0xf1, 0x83, 0xc5, 0x09, 0x3a, 0x4b)
class IPropertyBag2(com.pIUnknown):
_methods_ = [
('Read',
com.STDMETHOD()),
('Write',
com.STDMETHOD()),
('CountProperties',
com.STDMETHOD()),
('GetPropertyInfo',
com.STDMETHOD()),
('LoadObject',
com.STDMETHOD())
]
class IWICPalette(com.pIUnknown):
_methods_ = [
('InitializePredefined',
com.STDMETHOD()),
('InitializeCustom',
com.STDMETHOD()),
('InitializeFromBitmap',
com.STDMETHOD()),
('InitializeFromPalette',
com.STDMETHOD()),
('GetType',
com.STDMETHOD()),
('GetColorCount',
com.STDMETHOD()),
('GetColors',
com.STDMETHOD()),
('IsBlackWhite',
com.STDMETHOD()),
('IsGrayscale',
com.STDMETHOD()),
('HasAlpha',
com.STDMETHOD()),
]
class IWICStream(IStream, com.pIUnknown):
_methods_ = [
('InitializeFromIStream',
com.STDMETHOD(IStream)),
('InitializeFromFilename',
com.STDMETHOD(LPCWSTR, DWORD)),
('InitializeFromMemory',
com.STDMETHOD(POINTER(BYTE), DWORD)),
('InitializeFromIStreamRegion',
com.STDMETHOD()),
]
class IWICBitmapFrameEncode(com.pIUnknown):
_methods_ = [
('Initialize',
com.STDMETHOD(IPropertyBag2)),
('SetSize',
com.STDMETHOD(UINT, UINT)),
('SetResolution',
com.STDMETHOD()),
('SetPixelFormat',
com.STDMETHOD(REFWICPixelFormatGUID)),
('SetColorContexts',
com.STDMETHOD()),
('SetPalette',
com.STDMETHOD(IWICPalette)),
('SetThumbnail',
com.STDMETHOD()),
('WritePixels',
com.STDMETHOD(UINT, UINT, UINT, POINTER(BYTE))),
('WriteSource',
com.STDMETHOD()),
('Commit',
com.STDMETHOD()),
('GetMetadataQueryWriter',
com.STDMETHOD())
]
class IWICBitmapEncoder(com.pIUnknown):
_methods_ = [
('Initialize',
com.STDMETHOD(IWICStream, WICBitmapEncoderCacheOption)),
('GetContainerFormat',
com.STDMETHOD()),
('GetEncoderInfo',
com.STDMETHOD()),
('SetColorContexts',
com.STDMETHOD()),
('SetPalette',
com.STDMETHOD()),
('SetThumbnail',
com.STDMETHOD()),
('SetPreview',
com.STDMETHOD()),
('CreateNewFrame',
com.STDMETHOD(POINTER(IWICBitmapFrameEncode), POINTER(IPropertyBag2))),
('Commit',
com.STDMETHOD()),
('GetMetadataQueryWriter',
com.STDMETHOD())
]
class IWICComponentInfo(com.pIUnknown):
_methods_ = [
('GetComponentType',
com.STDMETHOD()),
('GetCLSID',
com.STDMETHOD()),
('GetSigningStatus',
com.STDMETHOD()),
('GetAuthor',
com.STDMETHOD()),
('GetVendorGUID',
com.STDMETHOD()),
('GetVersion',
com.STDMETHOD()),
('GetSpecVersion',
com.STDMETHOD()),
('GetFriendlyName',
com.STDMETHOD())
]
class IWICPixelFormatInfo(IWICComponentInfo, com.pIUnknown):
_methods_ = [
('GetFormatGUID',
com.STDMETHOD(POINTER(com.GUID))),
('GetColorContext',
com.STDMETHOD()),
('GetBitsPerPixel',
com.STDMETHOD(POINTER(UINT))),
('GetChannelCount',
com.STDMETHOD(POINTER(UINT))),
('GetChannelMask',
com.STDMETHOD())
]
class IWICBitmapSource(com.pIUnknown):
_methods_ = [
('GetSize',
com.STDMETHOD(POINTER(UINT), POINTER(UINT))),
('GetPixelFormat',
com.STDMETHOD(REFWICPixelFormatGUID)),
('GetResolution',
com.STDMETHOD(POINTER(DOUBLE), POINTER(DOUBLE))),
('CopyPalette',
com.STDMETHOD()),
('CopyPixels',
com.STDMETHOD(c_void_p, UINT, UINT, c_void_p)),
]
class IWICFormatConverter(IWICBitmapSource, com.pIUnknown):
_methods_ = [
('Initialize',
com.STDMETHOD(IWICBitmapSource, REFWICPixelFormatGUID, WICBitmapDitherType, c_void_p, DOUBLE,
WICBitmapPaletteType)),
('CanConvert',
com.STDMETHOD(REFWICPixelFormatGUID, REFWICPixelFormatGUID, POINTER(BOOL))),
]
class IWICMetadataQueryReader(com.pIUnknown):
_methods_ = [
('GetContainerFormat',
com.STDMETHOD()),
('GetLocation',
com.STDMETHOD()),
('GetMetadataByName',
com.STDMETHOD(LPCWSTR, c_void_p)),
('GetEnumerator',
com.STDMETHOD()),
]
class IWICBitmapFrameDecode(IWICBitmapSource, com.pIUnknown):
_methods_ = [
('GetMetadataQueryReader',
com.STDMETHOD(POINTER(IWICMetadataQueryReader))),
('GetColorContexts',
com.STDMETHOD()),
('GetThumbnail',
com.STDMETHOD(POINTER(IWICBitmapSource))),
]
class IWICBitmapFlipRotator(IWICBitmapSource, com.pIUnknown):
_methods_ = [
('Initialize',
com.STDMETHOD(IWICBitmapSource, WICBitmapTransformOptions)),
]
class IWICBitmap(IWICBitmapSource, com.pIUnknown):
_methods_ = [
('Lock',
com.STDMETHOD()),
('SetPalette',
com.STDMETHOD()),
('SetResolution',
com.STDMETHOD())
]
class IWICBitmapDecoder(com.pIUnknown):
_methods_ = [
('QueryCapability',
com.STDMETHOD()),
('Initialize',
com.STDMETHOD()),
('GetContainerFormat',
com.STDMETHOD()),
('GetDecoderInfo',
com.STDMETHOD()),
('CopyPalette',
com.STDMETHOD()),
('GetMetadataQueryReader',
com.STDMETHOD(POINTER(IWICMetadataQueryReader))),
('GetPreview',
com.STDMETHOD()),
('GetColorContexts',
com.STDMETHOD()),
('GetThumbnail',
com.STDMETHOD()),
('GetFrameCount',
com.STDMETHOD(POINTER(UINT))),
('GetFrame',
com.STDMETHOD(UINT, POINTER(IWICBitmapFrameDecode))),
]
IID_IWICImagingFactory1 = com.GUID(0xec5ec8a9, 0xc395, 0x4314, 0x9c, 0x77, 0x54, 0xd7, 0xa9, 0x35, 0xff, 0x70)
IID_IWICImagingFactory2 = com.GUID(0x7B816B45, 0x1996, 0x4476, 0xB1, 0x32, 0xDE, 0x9E, 0x24, 0x7C, 0x8A, 0xF0)
if WINDOWS_8_OR_GREATER:
IID_IWICImagingFactory = IID_IWICImagingFactory2
else:
IID_IWICImagingFactory = IID_IWICImagingFactory1
IID_IWICPixelFormatInfo = com.GUID(0xE8EDA601, 0x3D48, 0x431a, 0xAB, 0x44, 0x69, 0x05, 0x9B, 0xE8, 0x8B, 0xBE)
class IWICImagingFactory(com.pIUnknown):
_methods_ = [
('CreateDecoderFromFilename',
com.STDMETHOD(LPCWSTR, com.GUID, DWORD, WICDecodeOptions, POINTER(IWICBitmapDecoder))),
('CreateDecoderFromStream',
com.STDMETHOD(com.pIUnknown, c_void_p, WICDecodeOptions, POINTER(IWICBitmapDecoder))),
('CreateDecoderFromFileHandle',
com.STDMETHOD()),
('CreateComponentInfo',
com.STDMETHOD(com.GUID, POINTER(IWICComponentInfo))),
('CreateDecoder',
com.STDMETHOD()),
('CreateEncoder',
com.STDMETHOD(POINTER(com.GUID), POINTER(com.GUID), POINTER(IWICBitmapEncoder))),
('CreatePalette',
com.STDMETHOD(POINTER(IWICPalette))),
('CreateFormatConverter',
com.STDMETHOD(POINTER(IWICFormatConverter))),
('CreateBitmapScaler',
com.STDMETHOD()),
('CreateBitmapClipper',
com.STDMETHOD()),
('CreateBitmapFlipRotator',
com.STDMETHOD(POINTER(IWICBitmapFlipRotator))),
('CreateStream',
com.STDMETHOD(POINTER(IWICStream))),
('CreateColorContext',
com.STDMETHOD()),
('CreateColorTransformer',
com.STDMETHOD()),
('CreateBitmap',
com.STDMETHOD(UINT, UINT, REFWICPixelFormatGUID, WICBitmapCreateCacheOption, POINTER(IWICBitmap))),
('CreateBitmapFromSource',
com.STDMETHOD()),
('CreateBitmapFromSourceRect',
com.STDMETHOD()),
('CreateBitmapFromMemory',
com.STDMETHOD(UINT, UINT, REFWICPixelFormatGUID, UINT, UINT, POINTER(BYTE), POINTER(IWICBitmap))),
('CreateBitmapFromHBITMAP',
com.STDMETHOD()),
('CreateBitmapFromHICON',
com.STDMETHOD()),
('CreateComponentEnumerator',
com.STDMETHOD()),
('CreateFastMetadataEncoderFromDecoder',
com.STDMETHOD()),
('CreateFastMetadataEncoderFromFrameDecode',
com.STDMETHOD()),
('CreateQueryWriter',
com.STDMETHOD()),
('CreateQueryWriterFromReader',
com.STDMETHOD())
]
_factory = IWICImagingFactory()
ole32.CoCreateInstance(CLSID_WICImagingFactory,
None,
CLSCTX_INPROC_SERVER,
IID_IWICImagingFactory,
byref(_factory))
class WICDecoder(ImageDecoder):
"""Windows Imaging Component.
This decoder is a replacement for GDI and GDI+ starting with Windows 7 with more features up to Windows 10."""
def __init__(self):
super(ImageDecoder, self).__init__()
self._factory = _factory
def get_file_extensions(self):
return ['.bmp', '.jpg', '.jpeg', '.png', '.tif', '.tiff', '.ico', '.jxr', '.hdp', '.wdp']
def _load_bitmap_decoder(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
stream = com.pIUnknown()
ole32.CreateStreamOnHGlobal(hglob, True, byref(stream))
# Load image from stream
decoder = IWICBitmapDecoder()
status = self._factory.CreateDecoderFromStream(stream, None, WICDecodeMetadataCacheOnDemand, byref(decoder))
if status != 0:
stream.Release()
raise ImageDecodeException('WIC cannot load %r' % (filename or file))
return decoder, stream
def _get_bitmap_frame(self, bitmap_decoder, frame_index):
bitmap = IWICBitmapFrameDecode()
bitmap_decoder.GetFrame(frame_index, byref(bitmap))
return bitmap
def get_image(self, bitmap, target_fmt=GUID_WICPixelFormat32bppBGRA):
"""Get's image from bitmap, specifying target format, bitmap is released before returning."""
width = UINT()
height = UINT()
bitmap.GetSize(byref(width), byref(height))
width = int(width.value)
height = int(height.value)
# Get image pixel format
pf = com.GUID(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
bitmap.GetPixelFormat(byref(pf))
fmt = 'BGRA'
# If target format is not what we want (32bit BGRA) convert it.
if pf != target_fmt:
converter = IWICFormatConverter()
self._factory.CreateFormatConverter(byref(converter))
conversion_possible = BOOL()
converter.CanConvert(pf, target_fmt, byref(conversion_possible))
# 99% of the time conversion will be possible to default.
# However, we check to be safe and fallback to 24 bit BGR if not possible.
if not conversion_possible:
target_fmt = GUID_WICPixelFormat24bppBGR
fmt = 'BGR'
converter.Initialize(bitmap, target_fmt, WICBitmapDitherTypeNone, None, 0, WICBitmapPaletteTypeCustom)
bitmap.Release()
bitmap = converter
# Most images are loaded with a negative pitch, which requires list comprehension to fix.
# Create a flipped bitmap through the decoder rather through Python to increase performance.
flipper = IWICBitmapFlipRotator()
self._factory.CreateBitmapFlipRotator(byref(flipper))
flipper.Initialize(bitmap, WICBitmapTransformFlipVertical)
stride = len(fmt) * width
buffer_size = stride * height
buffer = (BYTE * buffer_size)()
flipper.CopyPixels(None, stride, buffer_size, byref(buffer))
flipper.Release()
bitmap.Release() # Can be converter.
return ImageData(width, height, fmt, buffer)
def _delete_bitmap_decoder(self, bitmap_decoder, stream):
# Release decoder and stream
bitmap_decoder.Release()
stream.Release()
def decode(self, filename, file):
if not file:
file = open(filename, 'rb')
bitmap_decoder, stream = self._load_bitmap_decoder(filename, file)
bitmap = self._get_bitmap_frame(bitmap_decoder, 0)
image = self.get_image(bitmap)
self._delete_bitmap_decoder(bitmap_decoder, stream)
return image
@staticmethod
def get_property_value(reader, metadata_name):
"""
Uses a metadata name and reader to return a single value. Can be used to get metadata from images.
If failure, returns 0.
Also handles cleanup of PROPVARIANT.
"""
try:
prop = PROPVARIANT()
reader.GetMetadataByName(metadata_name, byref(prop))
value = prop.llVal
ole32.PropVariantClear(byref(prop))
except OSError:
value = 0
return value
def get_decoders():
return [WICDecoder()]
extension_to_container = {
'.bmp': GUID_ContainerFormatBmp,
'.jpg': GUID_ContainerFormatJpeg,
'.jpeg': GUID_ContainerFormatJpeg,
'.tif': GUID_ContainerFormatTiff,
'.tiff': GUID_ContainerFormatTiff,
'.wmp': GUID_ContainerFormatWmp,
'.jxr': GUID_ContainerFormatWmp,
'.wdp': GUID_ContainerFormatWmp,
'.png': GUID_ContainerFormatPng,
}
class WICEncoder(ImageEncoder):
def get_file_extensions(self):
return [ext for ext in extension_to_container]
def encode(self, image, filename, file):
image = image.get_image_data()
wicstream = IWICStream()
encoder = IWICBitmapEncoder()
frame = IWICBitmapFrameEncode()
property_bag = IPropertyBag2()
ext = (filename and os.path.splitext(filename)[1]) or '.png'
# Choose container based on extension. Default to PNG.
container = extension_to_container.get(ext, GUID_ContainerFormatPng)
_factory.CreateStream(byref(wicstream))
# https://docs.microsoft.com/en-us/windows/win32/wic/-wic-codec-native-pixel-formats#native-image-formats
if container == GUID_ContainerFormatJpeg:
# Expects BGR, no transparency available. Hard coded.
fmt = 'BGR'
default_format = GUID_WICPixelFormat24bppBGR
else:
# Windows encodes in BGRA.
if len(image.format) == 3:
fmt = 'BGR'
default_format = GUID_WICPixelFormat24bppBGR
else:
fmt = 'BGRA'
default_format = GUID_WICPixelFormat32bppBGRA
pitch = image.width * len(fmt)
image_data = image.get_data(fmt, -pitch)
size = pitch * image.height
if file:
istream = IStream()
ole32.CreateStreamOnHGlobal(None, True, byref(istream))
wicstream.InitializeFromIStream(istream)
else:
wicstream.InitializeFromFilename(filename, GENERIC_WRITE)
_factory.CreateEncoder(container, None, byref(encoder))
encoder.Initialize(wicstream, WICBitmapEncoderNoCache)
encoder.CreateNewFrame(byref(frame), byref(property_bag))
frame.Initialize(property_bag)
frame.SetSize(image.width, image.height)
frame.SetPixelFormat(byref(default_format))
data = (BYTE * size).from_buffer(bytearray(image_data))
frame.WritePixels(image.height, pitch, size, data)
frame.Commit()
encoder.Commit()
if file:
sts = STATSTG()
istream.Stat(byref(sts), 0)
stream_size = sts.cbSize
istream.Seek(0, STREAM_SEEK_SET, None)
buf = (BYTE * stream_size)()
written = ULONG()
istream.Read(byref(buf), stream_size, byref(written))
if written.value == stream_size:
file.write(buf)
else:
print(f"Failed to read all of the data from stream attempting to save {file}")
istream.Release()
encoder.Release()
frame.Release()
property_bag.Release()
wicstream.Release()
def get_encoders():
return [WICEncoder()]