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authorLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-14 16:43:12 +0530
committerLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-14 16:43:12 +0530
commitd47f8b48935d258f4c5c3e2267911753bebd5214 (patch)
tree3ed04e75bc3fc7c8e4ce618f527565da1df630a1 /env/lib/python3.10/site-packages/PIL/DdsImagePlugin.py
parent9468226a9e2e2ab8cdd599f1d8538e860ca86120 (diff)
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Diffstat (limited to 'env/lib/python3.10/site-packages/PIL/DdsImagePlugin.py')
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diff --git a/env/lib/python3.10/site-packages/PIL/DdsImagePlugin.py b/env/lib/python3.10/site-packages/PIL/DdsImagePlugin.py
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@@ -1,267 +0,0 @@
-"""
-A Pillow loader for .dds files (S3TC-compressed aka DXTC)
-Jerome Leclanche <jerome@leclan.ch>
-
-Documentation:
- https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
-
-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/
-"""
-
-import struct
-from io import BytesIO
-
-from . import Image, ImageFile
-from ._binary import o32le as o32
-
-# Magic ("DDS ")
-DDS_MAGIC = 0x20534444
-
-# DDS flags
-DDSD_CAPS = 0x1
-DDSD_HEIGHT = 0x2
-DDSD_WIDTH = 0x4
-DDSD_PITCH = 0x8
-DDSD_PIXELFORMAT = 0x1000
-DDSD_MIPMAPCOUNT = 0x20000
-DDSD_LINEARSIZE = 0x80000
-DDSD_DEPTH = 0x800000
-
-# DDS caps
-DDSCAPS_COMPLEX = 0x8
-DDSCAPS_TEXTURE = 0x1000
-DDSCAPS_MIPMAP = 0x400000
-
-DDSCAPS2_CUBEMAP = 0x200
-DDSCAPS2_CUBEMAP_POSITIVEX = 0x400
-DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800
-DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000
-DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000
-DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000
-DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000
-DDSCAPS2_VOLUME = 0x200000
-
-# Pixel Format
-DDPF_ALPHAPIXELS = 0x1
-DDPF_ALPHA = 0x2
-DDPF_FOURCC = 0x4
-DDPF_PALETTEINDEXED8 = 0x20
-DDPF_RGB = 0x40
-DDPF_LUMINANCE = 0x20000
-
-
-# dds.h
-
-DDS_FOURCC = DDPF_FOURCC
-DDS_RGB = DDPF_RGB
-DDS_RGBA = DDPF_RGB | DDPF_ALPHAPIXELS
-DDS_LUMINANCE = DDPF_LUMINANCE
-DDS_LUMINANCEA = DDPF_LUMINANCE | DDPF_ALPHAPIXELS
-DDS_ALPHA = DDPF_ALPHA
-DDS_PAL8 = DDPF_PALETTEINDEXED8
-
-DDS_HEADER_FLAGS_TEXTURE = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
-DDS_HEADER_FLAGS_MIPMAP = DDSD_MIPMAPCOUNT
-DDS_HEADER_FLAGS_VOLUME = DDSD_DEPTH
-DDS_HEADER_FLAGS_PITCH = DDSD_PITCH
-DDS_HEADER_FLAGS_LINEARSIZE = DDSD_LINEARSIZE
-
-DDS_HEIGHT = DDSD_HEIGHT
-DDS_WIDTH = DDSD_WIDTH
-
-DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS_TEXTURE
-DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS_COMPLEX | DDSCAPS_MIPMAP
-DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS_COMPLEX
-
-DDS_CUBEMAP_POSITIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEX
-DDS_CUBEMAP_NEGATIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEX
-DDS_CUBEMAP_POSITIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEY
-DDS_CUBEMAP_NEGATIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEY
-DDS_CUBEMAP_POSITIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEZ
-DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEZ
-
-
-# DXT1
-DXT1_FOURCC = 0x31545844
-
-# DXT3
-DXT3_FOURCC = 0x33545844
-
-# DXT5
-DXT5_FOURCC = 0x35545844
-
-
-# dxgiformat.h
-
-DXGI_FORMAT_R8G8B8A8_TYPELESS = 27
-DXGI_FORMAT_R8G8B8A8_UNORM = 28
-DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29
-DXGI_FORMAT_BC5_TYPELESS = 82
-DXGI_FORMAT_BC5_UNORM = 83
-DXGI_FORMAT_BC5_SNORM = 84
-DXGI_FORMAT_BC6H_UF16 = 95
-DXGI_FORMAT_BC6H_SF16 = 96
-DXGI_FORMAT_BC7_TYPELESS = 97
-DXGI_FORMAT_BC7_UNORM = 98
-DXGI_FORMAT_BC7_UNORM_SRGB = 99
-
-
-class DdsImageFile(ImageFile.ImageFile):
- format = "DDS"
- format_description = "DirectDraw Surface"
-
- def _open(self):
- if not _accept(self.fp.read(4)):
- raise SyntaxError("not a DDS file")
- (header_size,) = struct.unpack("<I", self.fp.read(4))
- if header_size != 124:
- raise OSError(f"Unsupported header size {repr(header_size)}")
- header_bytes = self.fp.read(header_size - 4)
- if len(header_bytes) != 120:
- raise OSError(f"Incomplete header: {len(header_bytes)} bytes")
- header = BytesIO(header_bytes)
-
- flags, height, width = struct.unpack("<3I", header.read(12))
- self._size = (width, height)
- self.mode = "RGBA"
-
- pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
- struct.unpack("<11I", header.read(44)) # reserved
-
- # pixel format
- pfsize, pfflags = struct.unpack("<2I", header.read(8))
- fourcc = header.read(4)
- (bitcount,) = struct.unpack("<I", header.read(4))
- masks = struct.unpack("<4I", header.read(16))
- if pfflags & DDPF_RGB:
- # Texture contains uncompressed RGB data
- masks = {mask: ["R", "G", "B", "A"][i] for i, mask in enumerate(masks)}
- rawmode = ""
- if bitcount == 32:
- rawmode += masks[0xFF000000]
- else:
- self.mode = "RGB"
- rawmode += masks[0xFF0000] + masks[0xFF00] + masks[0xFF]
-
- self.tile = [("raw", (0, 0) + self.size, 0, (rawmode[::-1], 0, 1))]
- else:
- data_start = header_size + 4
- n = 0
- if fourcc == b"DXT1":
- self.pixel_format = "DXT1"
- n = 1
- elif fourcc == b"DXT3":
- self.pixel_format = "DXT3"
- n = 2
- elif fourcc == b"DXT5":
- self.pixel_format = "DXT5"
- n = 3
- elif fourcc == b"ATI1":
- self.pixel_format = "BC4"
- n = 4
- self.mode = "L"
- elif fourcc == b"ATI2":
- self.pixel_format = "BC5"
- n = 5
- self.mode = "RGB"
- elif fourcc == b"BC5S":
- self.pixel_format = "BC5S"
- n = 5
- self.mode = "RGB"
- elif fourcc == b"DX10":
- data_start += 20
- # ignoring flags which pertain to volume textures and cubemaps
- (dxgi_format,) = struct.unpack("<I", self.fp.read(4))
- self.fp.read(16)
- if dxgi_format in (DXGI_FORMAT_BC5_TYPELESS, DXGI_FORMAT_BC5_UNORM):
- self.pixel_format = "BC5"
- n = 5
- self.mode = "RGB"
- elif dxgi_format == DXGI_FORMAT_BC5_SNORM:
- self.pixel_format = "BC5S"
- n = 5
- self.mode = "RGB"
- elif dxgi_format == DXGI_FORMAT_BC6H_UF16:
- self.pixel_format = "BC6H"
- n = 6
- self.mode = "RGB"
- elif dxgi_format == DXGI_FORMAT_BC6H_SF16:
- self.pixel_format = "BC6HS"
- n = 6
- self.mode = "RGB"
- elif dxgi_format in (DXGI_FORMAT_BC7_TYPELESS, DXGI_FORMAT_BC7_UNORM):
- self.pixel_format = "BC7"
- n = 7
- elif dxgi_format == DXGI_FORMAT_BC7_UNORM_SRGB:
- self.pixel_format = "BC7"
- self.info["gamma"] = 1 / 2.2
- n = 7
- elif dxgi_format in (
- DXGI_FORMAT_R8G8B8A8_TYPELESS,
- DXGI_FORMAT_R8G8B8A8_UNORM,
- DXGI_FORMAT_R8G8B8A8_UNORM_SRGB,
- ):
- self.tile = [("raw", (0, 0) + self.size, 0, ("RGBA", 0, 1))]
- if dxgi_format == DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
- self.info["gamma"] = 1 / 2.2
- return
- else:
- raise NotImplementedError(
- f"Unimplemented DXGI format {dxgi_format}"
- )
- else:
- raise NotImplementedError(f"Unimplemented pixel format {repr(fourcc)}")
-
- self.tile = [
- ("bcn", (0, 0) + self.size, data_start, (n, self.pixel_format))
- ]
-
- def load_seek(self, pos):
- pass
-
-
-def _save(im, fp, filename):
- if im.mode not in ("RGB", "RGBA"):
- raise OSError(f"cannot write mode {im.mode} as DDS")
-
- fp.write(
- o32(DDS_MAGIC)
- + o32(124) # header size
- + o32(
- DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PITCH | DDSD_PIXELFORMAT
- ) # flags
- + o32(im.height)
- + o32(im.width)
- + o32((im.width * (32 if im.mode == "RGBA" else 24) + 7) // 8) # pitch
- + o32(0) # depth
- + o32(0) # mipmaps
- + o32(0) * 11 # reserved
- + o32(32) # pfsize
- + o32(DDS_RGBA if im.mode == "RGBA" else DDPF_RGB) # pfflags
- + o32(0) # fourcc
- + o32(32 if im.mode == "RGBA" else 24) # bitcount
- + o32(0xFF0000) # rbitmask
- + o32(0xFF00) # gbitmask
- + o32(0xFF) # bbitmask
- + o32(0xFF000000 if im.mode == "RGBA" else 0) # abitmask
- + o32(DDSCAPS_TEXTURE) # dwCaps
- + o32(0) # dwCaps2
- + o32(0) # dwCaps3
- + o32(0) # dwCaps4
- + o32(0) # dwReserved2
- )
- if im.mode == "RGBA":
- r, g, b, a = im.split()
- im = Image.merge("RGBA", (a, r, g, b))
- ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (im.mode[::-1], 0, 1))])
-
-
-def _accept(prefix):
- return prefix[:4] == b"DDS "
-
-
-Image.register_open(DdsImageFile.format, DdsImageFile, _accept)
-Image.register_save(DdsImageFile.format, _save)
-Image.register_extension(DdsImageFile.format, ".dds")