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BdfFontFile.py
2.75
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_binary.py
2
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BlpImagePlugin.py
14.23
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BmpImagePlugin.py
13.91
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BufrStubImagePlugin.py
1.48
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ContainerIO.py
2.82
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CurImagePlugin.py
1.64
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DcxImagePlugin.py
2.09
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DdsImagePlugin.py
7.8
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EpsImagePlugin.py
11.64
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ExifTags.py
9.22
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features.py
9.17
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FitsStubImagePlugin.py
2.5
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FliImagePlugin.py
4.16
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FontFile.py
2.7
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FpxImagePlugin.py
6.5
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FtexImagePlugin.py
3.23
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GbrImagePlugin.py
2.73
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GdImageFile.py
2.41
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GifImagePlugin.py
32.05
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GimpGradientFile.py
3.27
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GimpPaletteFile.py
1.24
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GribStubImagePlugin.py
1.48
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Hdf5StubImagePlugin.py
1.48
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IcnsImagePlugin.py
11.46
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IcoImagePlugin.py
10.57
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ImageChops.py
7.13
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ImageCms.py
36.22
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ImageColor.py
8.52
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ImageDraw2.py
4.9
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ImageDraw.py
33.9
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ImageEnhance.py
3.12
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ImageFile.py
20.58
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ImageFilter.py
15.75
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ImageFont.py
44.29
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ImageGrab.py
3.54
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ImageMath.py
7.44
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ImageMode.py
2.03
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ImageMorph.py
7.59
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ImageOps.py
19.82
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ImagePalette.py
7.66
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ImagePath.py
336
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Image.py
118.51
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ImageQt.py
6.54
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ImageSequence.py
1.81
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ImageShow.py
7.75
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ImageStat.py
3.81
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ImageTransform.py
2.78
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ImageWin.py
7.02
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_imagingcms.cpython-310-x86_64-linux-gnu.so
37.8
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_imaging.cpython-310-x86_64-linux-gnu.so
438.53
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_imagingft.cpython-310-x86_64-linux-gnu.so
41.46
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_imagingmath.cpython-310-x86_64-linux-gnu.so
18.43
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_imagingmorph.cpython-310-x86_64-linux-gnu.so
14.46
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ImImagePlugin.py
10.48
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ImtImagePlugin.py
2.15
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__init__.py
1.7
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IptcImagePlugin.py
5.58
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Jpeg2KImagePlugin.py
10.14
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JpegImagePlugin.py
27.79
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JpegPresets.py
12.06
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__main__.py
41
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McIdasImagePlugin.py
1.71
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MicImagePlugin.py
2.55
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MpegImagePlugin.py
1.76
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MpoImagePlugin.py
4.3
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MspImagePlugin.py
5.4
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PaletteFile.py
1.08
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PalmImagePlugin.py
8.89
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PcdImagePlugin.py
1.44
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PcfFontFile.py
6.2
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PcxImagePlugin.py
5.73
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PdfImagePlugin.py
7.16
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PdfParser.py
33.75
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PixarImagePlugin.py
1.59
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PngImagePlugin.py
43.11
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PpmImagePlugin.py
4.34
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PsdImagePlugin.py
7.88
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PSDraw.py
6.56
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PyAccess.py
9.38
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SgiImagePlugin.py
5.95
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SpiderImagePlugin.py
9.31
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SunImagePlugin.py
4.18
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TarIO.py
1.41
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TgaImagePlugin.py
6.32
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TiffImagePlugin.py
71.17
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TiffTags.py
14.93
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_tkinter_finder.py
525
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_util.py
359
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_version.py
50
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WalImageFile.py
5.42
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_webp.cpython-310-x86_64-linux-gnu.so
28.09
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WebPImagePlugin.py
10.58
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WmfImagePlugin.py
4.53
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XbmImagePlugin.py
2.37
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XpmImagePlugin.py
2.99
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XVThumbImagePlugin.py
1.89
KB
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Code Editor : BlpImagePlugin.py
""" Blizzard Mipmap Format (.blp) Jerome Leclanche <jerome@leclan.ch> The contents of this file are hereby released in the public domain (CC0) Full text of the CC0 license: https://creativecommons.org/publicdomain/zero/1.0/ BLP1 files, used mostly in Warcraft III, are not fully supported. All types of BLP2 files used in World of Warcraft are supported. The BLP file structure consists of a header, up to 16 mipmaps of the texture Texture sizes must be powers of two, though the two dimensions do not have to be equal; 512x256 is valid, but 512x200 is not. The first mipmap (mipmap #0) is the full size image; each subsequent mipmap halves both dimensions. The final mipmap should be 1x1. BLP files come in many different flavours: * JPEG-compressed (type == 0) - only supported for BLP1. * RAW images (type == 1, encoding == 1). Each mipmap is stored as an array of 8-bit values, one per pixel, left to right, top to bottom. Each value is an index to the palette. * DXT-compressed (type == 1, encoding == 2): - DXT1 compression is used if alpha_encoding == 0. - An additional alpha bit is used if alpha_depth == 1. - DXT3 compression is used if alpha_encoding == 1. - DXT5 compression is used if alpha_encoding == 7. """ import struct from io import BytesIO from . import Image, ImageFile BLP_FORMAT_JPEG = 0 BLP_ENCODING_UNCOMPRESSED = 1 BLP_ENCODING_DXT = 2 BLP_ENCODING_UNCOMPRESSED_RAW_BGRA = 3 BLP_ALPHA_ENCODING_DXT1 = 0 BLP_ALPHA_ENCODING_DXT3 = 1 BLP_ALPHA_ENCODING_DXT5 = 7 def unpack_565(i): return (((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3) def decode_dxt1(data, alpha=False): """ input: one "row" of data (i.e. will produce 4*width pixels) """ blocks = len(data) // 8 # number of blocks in row ret = (bytearray(), bytearray(), bytearray(), bytearray()) for block in range(blocks): # Decode next 8-byte block. idx = block * 8 color0, color1, bits = struct.unpack_from("<HHI", data, idx) r0, g0, b0 = unpack_565(color0) r1, g1, b1 = unpack_565(color1) # Decode this block into 4x4 pixels # Accumulate the results onto our 4 row accumulators for j in range(4): for i in range(4): # get next control op and generate a pixel control = bits & 3 bits = bits >> 2 a = 0xFF if control == 0: r, g, b = r0, g0, b0 elif control == 1: r, g, b = r1, g1, b1 elif control == 2: if color0 > color1: r = (2 * r0 + r1) // 3 g = (2 * g0 + g1) // 3 b = (2 * b0 + b1) // 3 else: r = (r0 + r1) // 2 g = (g0 + g1) // 2 b = (b0 + b1) // 2 elif control == 3: if color0 > color1: r = (2 * r1 + r0) // 3 g = (2 * g1 + g0) // 3 b = (2 * b1 + b0) // 3 else: r, g, b, a = 0, 0, 0, 0 if alpha: ret[j].extend([r, g, b, a]) else: ret[j].extend([r, g, b]) return ret def decode_dxt3(data): """ input: one "row" of data (i.e. will produce 4*width pixels) """ blocks = len(data) // 16 # number of blocks in row ret = (bytearray(), bytearray(), bytearray(), bytearray()) for block in range(blocks): idx = block * 16 block = data[idx : idx + 16] # Decode next 16-byte block. bits = struct.unpack_from("<8B", block) color0, color1 = struct.unpack_from("<HH", block, 8) (code,) = struct.unpack_from("<I", block, 12) r0, g0, b0 = unpack_565(color0) r1, g1, b1 = unpack_565(color1) for j in range(4): high = False # Do we want the higher bits? for i in range(4): alphacode_index = (4 * j + i) // 2 a = bits[alphacode_index] if high: high = False a >>= 4 else: high = True a &= 0xF a *= 17 # We get a value between 0 and 15 color_code = (code >> 2 * (4 * j + i)) & 0x03 if color_code == 0: r, g, b = r0, g0, b0 elif color_code == 1: r, g, b = r1, g1, b1 elif color_code == 2: r = (2 * r0 + r1) // 3 g = (2 * g0 + g1) // 3 b = (2 * b0 + b1) // 3 elif color_code == 3: r = (2 * r1 + r0) // 3 g = (2 * g1 + g0) // 3 b = (2 * b1 + b0) // 3 ret[j].extend([r, g, b, a]) return ret def decode_dxt5(data): """ input: one "row" of data (i.e. will produce 4 * width pixels) """ blocks = len(data) // 16 # number of blocks in row ret = (bytearray(), bytearray(), bytearray(), bytearray()) for block in range(blocks): idx = block * 16 block = data[idx : idx + 16] # Decode next 16-byte block. a0, a1 = struct.unpack_from("<BB", block) bits = struct.unpack_from("<6B", block, 2) alphacode1 = bits[2] | (bits[3] << 8) | (bits[4] << 16) | (bits[5] << 24) alphacode2 = bits[0] | (bits[1] << 8) color0, color1 = struct.unpack_from("<HH", block, 8) (code,) = struct.unpack_from("<I", block, 12) r0, g0, b0 = unpack_565(color0) r1, g1, b1 = unpack_565(color1) for j in range(4): for i in range(4): # get next control op and generate a pixel alphacode_index = 3 * (4 * j + i) if alphacode_index <= 12: alphacode = (alphacode2 >> alphacode_index) & 0x07 elif alphacode_index == 15: alphacode = (alphacode2 >> 15) | ((alphacode1 << 1) & 0x06) else: # alphacode_index >= 18 and alphacode_index <= 45 alphacode = (alphacode1 >> (alphacode_index - 16)) & 0x07 if alphacode == 0: a = a0 elif alphacode == 1: a = a1 elif a0 > a1: a = ((8 - alphacode) * a0 + (alphacode - 1) * a1) // 7 elif alphacode == 6: a = 0 elif alphacode == 7: a = 255 else: a = ((6 - alphacode) * a0 + (alphacode - 1) * a1) // 5 color_code = (code >> 2 * (4 * j + i)) & 0x03 if color_code == 0: r, g, b = r0, g0, b0 elif color_code == 1: r, g, b = r1, g1, b1 elif color_code == 2: r = (2 * r0 + r1) // 3 g = (2 * g0 + g1) // 3 b = (2 * b0 + b1) // 3 elif color_code == 3: r = (2 * r1 + r0) // 3 g = (2 * g1 + g0) // 3 b = (2 * b1 + b0) // 3 ret[j].extend([r, g, b, a]) return ret class BLPFormatError(NotImplementedError): pass class BlpImageFile(ImageFile.ImageFile): """ Blizzard Mipmap Format """ format = "BLP" format_description = "Blizzard Mipmap Format" def _open(self): self.magic = self.fp.read(4) self._read_blp_header() if self.magic == b"BLP1": decoder = "BLP1" self.mode = "RGB" elif self.magic == b"BLP2": decoder = "BLP2" self.mode = "RGBA" if self._blp_alpha_depth else "RGB" else: raise BLPFormatError(f"Bad BLP magic {repr(self.magic)}") self.tile = [(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))] def _read_blp_header(self): (self._blp_compression,) = struct.unpack("<i", self.fp.read(4)) (self._blp_encoding,) = struct.unpack("<b", self.fp.read(1)) (self._blp_alpha_depth,) = struct.unpack("<b", self.fp.read(1)) (self._blp_alpha_encoding,) = struct.unpack("<b", self.fp.read(1)) (self._blp_mips,) = struct.unpack("<b", self.fp.read(1)) self._size = struct.unpack("<II", self.fp.read(8)) if self.magic == b"BLP1": # Only present for BLP1 (self._blp_encoding,) = struct.unpack("<i", self.fp.read(4)) (self._blp_subtype,) = struct.unpack("<i", self.fp.read(4)) self._blp_offsets = struct.unpack("<16I", self.fp.read(16 * 4)) self._blp_lengths = struct.unpack("<16I", self.fp.read(16 * 4)) class _BLPBaseDecoder(ImageFile.PyDecoder): _pulls_fd = True def decode(self, buffer): try: self.fd.seek(0) self.magic = self.fd.read(4) self._read_blp_header() self._load() except struct.error as e: raise OSError("Truncated Blp file") from e return 0, 0 def _safe_read(self, length): return ImageFile._safe_read(self.fd, length) def _read_palette(self): ret = [] for i in range(256): try: b, g, r, a = struct.unpack("<4B", self._safe_read(4)) except struct.error: break ret.append((b, g, r, a)) return ret def _read_blp_header(self): (self._blp_compression,) = struct.unpack("<i", self._safe_read(4)) (self._blp_encoding,) = struct.unpack("<b", self._safe_read(1)) (self._blp_alpha_depth,) = struct.unpack("<b", self._safe_read(1)) (self._blp_alpha_encoding,) = struct.unpack("<b", self._safe_read(1)) (self._blp_mips,) = struct.unpack("<b", self._safe_read(1)) self.size = struct.unpack("<II", self._safe_read(8)) if self.magic == b"BLP1": # Only present for BLP1 (self._blp_encoding,) = struct.unpack("<i", self._safe_read(4)) (self._blp_subtype,) = struct.unpack("<i", self._safe_read(4)) self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4)) self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4)) class BLP1Decoder(_BLPBaseDecoder): def _load(self): if self._blp_compression == BLP_FORMAT_JPEG: self._decode_jpeg_stream() elif self._blp_compression == 1: if self._blp_encoding in (4, 5): data = bytearray() palette = self._read_palette() _data = BytesIO(self._safe_read(self._blp_lengths[0])) while True: try: (offset,) = struct.unpack("<B", _data.read(1)) except struct.error: break b, g, r, a = palette[offset] data.extend([r, g, b]) self.set_as_raw(bytes(data)) else: raise BLPFormatError( f"Unsupported BLP encoding {repr(self._blp_encoding)}" ) else: raise BLPFormatError( f"Unsupported BLP compression {repr(self._blp_encoding)}" ) def _decode_jpeg_stream(self): from PIL.JpegImagePlugin import JpegImageFile (jpeg_header_size,) = struct.unpack("<I", self._safe_read(4)) jpeg_header = self._safe_read(jpeg_header_size) self._safe_read(self._blp_offsets[0] - self.fd.tell()) # What IS this? data = self._safe_read(self._blp_lengths[0]) data = jpeg_header + data data = BytesIO(data) image = JpegImageFile(data) Image._decompression_bomb_check(image.size) self.tile = image.tile # :/ self.fd = image.fp self.mode = image.mode class BLP2Decoder(_BLPBaseDecoder): def _load(self): palette = self._read_palette() data = bytearray() self.fd.seek(self._blp_offsets[0]) if self._blp_compression == 1: # Uncompressed or DirectX compression if self._blp_encoding == BLP_ENCODING_UNCOMPRESSED: _data = BytesIO(self._safe_read(self._blp_lengths[0])) while True: try: (offset,) = struct.unpack("<B", _data.read(1)) except struct.error: break b, g, r, a = palette[offset] data.extend((r, g, b)) elif self._blp_encoding == BLP_ENCODING_DXT: if self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT1: linesize = (self.size[0] + 3) // 4 * 8 for yb in range((self.size[1] + 3) // 4): for d in decode_dxt1( self._safe_read(linesize), alpha=bool(self._blp_alpha_depth) ): data += d elif self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT3: linesize = (self.size[0] + 3) // 4 * 16 for yb in range((self.size[1] + 3) // 4): for d in decode_dxt3(self._safe_read(linesize)): data += d elif self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT5: linesize = (self.size[0] + 3) // 4 * 16 for yb in range((self.size[1] + 3) // 4): for d in decode_dxt5(self._safe_read(linesize)): data += d else: raise BLPFormatError( f"Unsupported alpha encoding {repr(self._blp_alpha_encoding)}" ) else: raise BLPFormatError(f"Unknown BLP encoding {repr(self._blp_encoding)}") else: raise BLPFormatError( f"Unknown BLP compression {repr(self._blp_compression)}" ) self.set_as_raw(bytes(data)) def _accept(prefix): return prefix[:4] in (b"BLP1", b"BLP2") Image.register_open(BlpImageFile.format, BlpImageFile, _accept) Image.register_extension(BlpImageFile.format, ".blp") Image.register_decoder("BLP1", BLP1Decoder) Image.register_decoder("BLP2", BLP2Decoder)
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