gnx/Hotel-Booking
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

updates

Browse Source
This commit is contained in:
Iliyan Angelov
2025-12-01 06:50:10 +02:00
parent 91f51bc6fe
commit 62c1fe5951
4682 changed files with 544807 additions and 31208 deletions
Download Patch File Download Diff File Expand all files Collapse all files

221
Backend/venv/lib/python3.12/site-packages/PIL/BlpImagePlugin.py
View File

@@ -29,10 +29,14 @@ BLP files come in many different flavours:
- DXT5 compression is used if alpha_encoding == 7.
"""
from __future__ import annotations
import abc
import os
import struct
from enum import IntEnum
from io import BytesIO
from typing import IO
from . import Image, ImageFile
@@ -53,11 +57,13 @@ class AlphaEncoding(IntEnum):
DXT5 = 7
def unpack_565(i):
def unpack_565(i: int) -> tuple[int, int, int]:
return ((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3
def decode_dxt1(data, alpha=False):
def decode_dxt1(
data: bytes, alpha: bool = False
) -> tuple[bytearray, bytearray, bytearray, bytearray]:
"""
input: one "row" of data (i.e. will produce 4*width pixels)
"""
@@ -65,9 +71,9 @@ def decode_dxt1(data, alpha=False):
blocks = len(data) // 8 # number of blocks in row
ret = (bytearray(), bytearray(), bytearray(), bytearray())
for block in range(blocks):
for block_index in range(blocks):
# Decode next 8-byte block.
idx = block * 8
idx = block_index * 8
color0, color1, bits = struct.unpack_from("<HHI", data, idx)
r0, g0, b0 = unpack_565(color0)
@@ -112,7 +118,7 @@ def decode_dxt1(data, alpha=False):
return ret
def decode_dxt3(data):
def decode_dxt3(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
"""
input: one "row" of data (i.e. will produce 4*width pixels)
"""
@@ -120,8 +126,8 @@ def decode_dxt3(data):
blocks = len(data) // 16 # number of blocks in row
ret = (bytearray(), bytearray(), bytearray(), bytearray())
for block in range(blocks):
idx = block * 16
for block_index in range(blocks):
idx = block_index * 16
block = data[idx : idx + 16]
# Decode next 16-byte block.
bits = struct.unpack_from("<8B", block)
@@ -165,7 +171,7 @@ def decode_dxt3(data):
return ret
def decode_dxt5(data):
def decode_dxt5(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
"""
input: one "row" of data (i.e. will produce 4 * width pixels)
"""
@@ -173,8 +179,8 @@ def decode_dxt5(data):
blocks = len(data) // 16 # number of blocks in row
ret = (bytearray(), bytearray(), bytearray(), bytearray())
for block in range(blocks):
idx = block * 16
for block_index in range(blocks):
idx = block_index * 16
block = data[idx : idx + 16]
# Decode next 16-byte block.
a0, a1 = struct.unpack_from("<BB", block)
@@ -239,8 +245,8 @@ class BLPFormatError(NotImplementedError):
pass
def _accept(prefix):
return prefix[:4] in (b"BLP1", b"BLP2")
def _accept(prefix: bytes) -> bool:
return prefix.startswith((b"BLP1", b"BLP2"))
class BlpImageFile(ImageFile.ImageFile):
@@ -251,60 +257,65 @@ class BlpImageFile(ImageFile.ImageFile):
format = "BLP"
format_description = "Blizzard Mipmap Format"
def _open(self):
def _open(self) -> None:
self.magic = self.fp.read(4)
self.fp.seek(5, os.SEEK_CUR)
(self._blp_alpha_depth,) = struct.unpack("<b", self.fp.read(1))
self.fp.seek(2, os.SEEK_CUR)
self._size = struct.unpack("<II", self.fp.read(8))
if self.magic in (b"BLP1", b"BLP2"):
decoder = self.magic.decode()
else:
if not _accept(self.magic):
msg = f"Bad BLP magic {repr(self.magic)}"
raise BLPFormatError(msg)
self._mode = "RGBA" if self._blp_alpha_depth else "RGB"
self.tile = [(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
compression = struct.unpack("<i", self.fp.read(4))[0]
if self.magic == b"BLP1":
alpha = struct.unpack("<I", self.fp.read(4))[0] != 0
else:
encoding = struct.unpack("<b", self.fp.read(1))[0]
alpha = struct.unpack("<b", self.fp.read(1))[0] != 0
alpha_encoding = struct.unpack("<b", self.fp.read(1))[0]
self.fp.seek(1, os.SEEK_CUR) # mips
self._size = struct.unpack("<II", self.fp.read(8))
args: tuple[int, int, bool] | tuple[int, int, bool, int]
if self.magic == b"BLP1":
encoding = struct.unpack("<i", self.fp.read(4))[0]
self.fp.seek(4, os.SEEK_CUR) # subtype
args = (compression, encoding, alpha)
offset = 28
else:
args = (compression, encoding, alpha, alpha_encoding)
offset = 20
decoder = self.magic.decode()
self._mode = "RGBA" if alpha else "RGB"
self.tile = [ImageFile._Tile(decoder, (0, 0) + self.size, offset, args)]
class _BLPBaseDecoder(ImageFile.PyDecoder):
class _BLPBaseDecoder(abc.ABC, ImageFile.PyDecoder):
_pulls_fd = True
def decode(self, buffer):
def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
try:
self._read_blp_header()
self._read_header()
self._load()
except struct.error as e:
msg = "Truncated BLP file"
raise OSError(msg) from e
return -1, 0
def _read_blp_header(self):
self.fd.seek(4)
(self._blp_compression,) = struct.unpack("<i", self._safe_read(4))
@abc.abstractmethod
def _load(self) -> None:
pass
(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.fd.seek(1, os.SEEK_CUR) # mips
def _read_header(self) -> None:
self._offsets = struct.unpack("<16I", self._safe_read(16 * 4))
self._lengths = struct.unpack("<16I", self._safe_read(16 * 4))
self.size = struct.unpack("<II", self._safe_read(8))
if isinstance(self, BLP1Decoder):
# Only present for BLP1
(self._blp_encoding,) = struct.unpack("<i", self._safe_read(4))
self.fd.seek(4, os.SEEK_CUR) # subtype
self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4))
self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4))
def _safe_read(self, length):
def _safe_read(self, length: int) -> bytes:
assert self.fd is not None
return ImageFile._safe_read(self.fd, length)
def _read_palette(self):
def _read_palette(self) -> list[tuple[int, int, int, int]]:
ret = []
for i in range(256):
try:
@@ -314,110 +325,115 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
ret.append((b, g, r, a))
return ret
def _read_bgra(self, palette):
def _read_bgra(
self, palette: list[tuple[int, int, int, int]], alpha: bool
) -> bytearray:
data = bytearray()
_data = BytesIO(self._safe_read(self._blp_lengths[0]))
_data = BytesIO(self._safe_read(self._lengths[0]))
while True:
try:
(offset,) = struct.unpack("<B", _data.read(1))
except struct.error:
break
b, g, r, a = palette[offset]
d = (r, g, b)
if self._blp_alpha_depth:
d: tuple[int, ...] = (r, g, b)
if alpha:
d += (a,)
data.extend(d)
return data
class BLP1Decoder(_BLPBaseDecoder):
def _load(self):
if self._blp_compression == Format.JPEG:
def _load(self) -> None:
self._compression, self._encoding, alpha = self.args
if self._compression == Format.JPEG:
self._decode_jpeg_stream()
elif self._blp_compression == 1:
if self._blp_encoding in (4, 5):
elif self._compression == 1:
if self._encoding in (4, 5):
palette = self._read_palette()
data = self._read_bgra(palette)
self.set_as_raw(bytes(data))
data = self._read_bgra(palette, alpha)
self.set_as_raw(data)
else:
msg = f"Unsupported BLP encoding {repr(self._blp_encoding)}"
msg = f"Unsupported BLP encoding {repr(self._encoding)}"
raise BLPFormatError(msg)
else:
msg = f"Unsupported BLP compression {repr(self._blp_encoding)}"
msg = f"Unsupported BLP compression {repr(self._encoding)}"
raise BLPFormatError(msg)
def _decode_jpeg_stream(self):
def _decode_jpeg_stream(self) -> None:
from .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])
assert self.fd is not None
self._safe_read(self._offsets[0] - self.fd.tell()) # What IS this?
data = self._safe_read(self._lengths[0])
data = jpeg_header + data
data = BytesIO(data)
image = JpegImageFile(data)
image = JpegImageFile(BytesIO(data))
Image._decompression_bomb_check(image.size)
if image.mode == "CMYK":
decoder_name, extents, offset, args = image.tile[0]
image.tile = [(decoder_name, extents, offset, (args[0], "CMYK"))]
r, g, b = image.convert("RGB").split()
image = Image.merge("RGB", (b, g, r))
self.set_as_raw(image.tobytes())
args = image.tile[0].args
assert isinstance(args, tuple)
image.tile = [image.tile[0]._replace(args=(args[0], "CMYK"))]
self.set_as_raw(image.convert("RGB").tobytes(), "BGR")
class BLP2Decoder(_BLPBaseDecoder):
def _load(self):
def _load(self) -> None:
self._compression, self._encoding, alpha, self._alpha_encoding = self.args
palette = self._read_palette()
self.fd.seek(self._blp_offsets[0])
assert self.fd is not None
self.fd.seek(self._offsets[0])
if self._blp_compression == 1:
if self._compression == 1:
# Uncompressed or DirectX compression
if self._blp_encoding == Encoding.UNCOMPRESSED:
data = self._read_bgra(palette)
if self._encoding == Encoding.UNCOMPRESSED:
data = self._read_bgra(palette, alpha)
elif self._blp_encoding == Encoding.DXT:
elif self._encoding == Encoding.DXT:
data = bytearray()
if self._blp_alpha_encoding == AlphaEncoding.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)
):
if self._alpha_encoding == AlphaEncoding.DXT1:
linesize = (self.state.xsize + 3) // 4 * 8
for yb in range((self.state.ysize + 3) // 4):
for d in decode_dxt1(self._safe_read(linesize), alpha):
data += d
elif self._blp_alpha_encoding == AlphaEncoding.DXT3:
linesize = (self.size[0] + 3) // 4 * 16
for yb in range((self.size[1] + 3) // 4):
elif self._alpha_encoding == AlphaEncoding.DXT3:
linesize = (self.state.xsize + 3) // 4 * 16
for yb in range((self.state.ysize + 3) // 4):
for d in decode_dxt3(self._safe_read(linesize)):
data += d
elif self._blp_alpha_encoding == AlphaEncoding.DXT5:
linesize = (self.size[0] + 3) // 4 * 16
for yb in range((self.size[1] + 3) // 4):
elif self._alpha_encoding == AlphaEncoding.DXT5:
linesize = (self.state.xsize + 3) // 4 * 16
for yb in range((self.state.ysize + 3) // 4):
for d in decode_dxt5(self._safe_read(linesize)):
data += d
else:
msg = f"Unsupported alpha encoding {repr(self._blp_alpha_encoding)}"
msg = f"Unsupported alpha encoding {repr(self._alpha_encoding)}"
raise BLPFormatError(msg)
else:
msg = f"Unknown BLP encoding {repr(self._blp_encoding)}"
msg = f"Unknown BLP encoding {repr(self._encoding)}"
raise BLPFormatError(msg)
else:
msg = f"Unknown BLP compression {repr(self._blp_compression)}"
msg = f"Unknown BLP compression {repr(self._compression)}"
raise BLPFormatError(msg)
self.set_as_raw(bytes(data))
self.set_as_raw(data)
class BLPEncoder(ImageFile.PyEncoder):
_pushes_fd = True
def _write_palette(self):
def _write_palette(self) -> bytes:
data = b""
assert self.im is not None
palette = self.im.getpalette("RGBA", "RGBA")
for i in range(len(palette) // 4):
r, g, b, a = palette[i * 4 : (i + 1) * 4]
@@ -426,12 +442,13 @@ class BLPEncoder(ImageFile.PyEncoder):
data += b"\x00" * 4
return data
def encode(self, bufsize):
def encode(self, bufsize: int) -> tuple[int, int, bytes]:
palette_data = self._write_palette()
offset = 20 + 16 * 4 * 2 + len(palette_data)
data = struct.pack("<16I", offset, *((0,) * 15))
assert self.im is not None
w, h = self.im.size
data += struct.pack("<16I", w * h, *((0,) * 15))
@@ -444,7 +461,7 @@ class BLPEncoder(ImageFile.PyEncoder):
return len(data), 0, data
def _save(im, fp, filename):
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
if im.mode != "P":
msg = "Unsupported BLP image mode"
raise ValueError(msg)
@@ -452,17 +469,23 @@ def _save(im, fp, filename):
magic = b"BLP1" if im.encoderinfo.get("blp_version") == "BLP1" else b"BLP2"
fp.write(magic)
assert im.palette is not None
fp.write(struct.pack("<i", 1)) # Uncompressed or DirectX compression
fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
fp.write(struct.pack("<b", 1 if im.palette.mode == "RGBA" else 0))
fp.write(struct.pack("<b", 0)) # alpha encoding
fp.write(struct.pack("<b", 0)) # mips
alpha_depth = 1 if im.palette.mode == "RGBA" else 0
if magic == b"BLP1":
fp.write(struct.pack("<L", alpha_depth))
else:
fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
fp.write(struct.pack("<b", alpha_depth))
fp.write(struct.pack("<b", 0)) # alpha encoding
fp.write(struct.pack("<b", 0)) # mips
fp.write(struct.pack("<II", *im.size))
if magic == b"BLP1":
fp.write(struct.pack("<i", 5))
fp.write(struct.pack("<i", 0))
ImageFile._save(im, fp, [("BLP", (0, 0) + im.size, 0, im.mode)])
ImageFile._save(im, fp, [ImageFile._Tile("BLP", (0, 0) + im.size, 0, im.mode)])
Image.register_open(BlpImageFile.format, BlpImageFile, _accept)