marcocosta10000
6b3b6541a7
Initial project setup including the main agent script, configuration files, profile JSON state, systemd service unit, startup script, deployment documentation, and Python dependencies. Includes .env, venv/, and __pycache__/ which should likely be excluded via .gitignore to avoid committing secrets and artifacts.
294 lines
8.8 KiB
Python
294 lines
8.8 KiB
Python
from __future__ import annotations
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import os
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from io import BytesIO
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from typing import IO
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from . import ExifTags, Image, ImageFile
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try:
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from . import _avif
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SUPPORTED = True
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except ImportError:
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SUPPORTED = False
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# Decoder options as module globals, until there is a way to pass parameters
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# to Image.open (see https://github.com/python-pillow/Pillow/issues/569)
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DECODE_CODEC_CHOICE = "auto"
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DEFAULT_MAX_THREADS = 0
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def get_codec_version(codec_name: str) -> str | None:
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versions = _avif.codec_versions()
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for version in versions.split(", "):
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if version.split(" [")[0] == codec_name:
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return version.split(":")[-1].split(" ")[0]
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return None
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def _accept(prefix: bytes) -> bool | str:
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if prefix[4:8] != b"ftyp":
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return False
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major_brand = prefix[8:12]
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if major_brand in (
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# coding brands
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b"avif",
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b"avis",
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# We accept files with AVIF container brands; we can't yet know if
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# the ftyp box has the correct compatible brands, but if it doesn't
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# then the plugin will raise a SyntaxError which Pillow will catch
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# before moving on to the next plugin that accepts the file.
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#
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# Also, because this file might not actually be an AVIF file, we
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# don't raise an error if AVIF support isn't properly compiled.
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b"mif1",
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b"msf1",
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):
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if not SUPPORTED:
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return (
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"image file could not be identified because AVIF support not installed"
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)
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return True
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return False
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def _get_default_max_threads() -> int:
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if DEFAULT_MAX_THREADS:
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return DEFAULT_MAX_THREADS
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if hasattr(os, "sched_getaffinity"):
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return len(os.sched_getaffinity(0))
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else:
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return os.cpu_count() or 1
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class AvifImageFile(ImageFile.ImageFile):
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format = "AVIF"
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format_description = "AVIF image"
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__frame = -1
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def _open(self) -> None:
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if not SUPPORTED:
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msg = "image file could not be opened because AVIF support not installed"
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raise SyntaxError(msg)
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if DECODE_CODEC_CHOICE != "auto" and not _avif.decoder_codec_available(
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DECODE_CODEC_CHOICE
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):
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msg = "Invalid opening codec"
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raise ValueError(msg)
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assert self.fp is not None
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self._decoder = _avif.AvifDecoder(
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self.fp.read(),
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DECODE_CODEC_CHOICE,
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_get_default_max_threads(),
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)
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# Get info from decoder
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self._size, self.n_frames, self._mode, icc, exif, exif_orientation, xmp = (
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self._decoder.get_info()
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)
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self.is_animated = self.n_frames > 1
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if icc:
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self.info["icc_profile"] = icc
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if xmp:
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self.info["xmp"] = xmp
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if exif_orientation != 1 or exif:
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exif_data = Image.Exif()
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if exif:
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exif_data.load(exif)
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original_orientation = exif_data.get(ExifTags.Base.Orientation, 1)
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else:
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original_orientation = 1
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if exif_orientation != original_orientation:
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exif_data[ExifTags.Base.Orientation] = exif_orientation
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exif = exif_data.tobytes()
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if exif:
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self.info["exif"] = exif
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self.seek(0)
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def seek(self, frame: int) -> None:
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if not self._seek_check(frame):
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return
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# Set tile
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self.__frame = frame
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self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, self.mode)]
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def load(self) -> Image.core.PixelAccess | None:
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if self.tile:
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# We need to load the image data for this frame
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data, timescale, pts_in_timescales, duration_in_timescales = (
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self._decoder.get_frame(self.__frame)
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)
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self.info["timestamp"] = round(1000 * (pts_in_timescales / timescale))
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self.info["duration"] = round(1000 * (duration_in_timescales / timescale))
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if self.fp and self._exclusive_fp:
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self.fp.close()
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self.fp = BytesIO(data)
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return super().load()
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def load_seek(self, pos: int) -> None:
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pass
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def tell(self) -> int:
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return self.__frame
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def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
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_save(im, fp, filename, save_all=True)
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def _save(
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im: Image.Image, fp: IO[bytes], filename: str | bytes, save_all: bool = False
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) -> None:
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info = im.encoderinfo.copy()
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if save_all:
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append_images = list(info.get("append_images", []))
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else:
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append_images = []
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total = 0
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for ims in [im] + append_images:
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total += getattr(ims, "n_frames", 1)
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quality = info.get("quality", 75)
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if not isinstance(quality, int) or quality < 0 or quality > 100:
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msg = "Invalid quality setting"
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raise ValueError(msg)
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duration = info.get("duration", 0)
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subsampling = info.get("subsampling", "4:2:0")
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speed = info.get("speed", 6)
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max_threads = info.get("max_threads", _get_default_max_threads())
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codec = info.get("codec", "auto")
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if codec != "auto" and not _avif.encoder_codec_available(codec):
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msg = "Invalid saving codec"
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raise ValueError(msg)
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range_ = info.get("range", "full")
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tile_rows_log2 = info.get("tile_rows", 0)
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tile_cols_log2 = info.get("tile_cols", 0)
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alpha_premultiplied = bool(info.get("alpha_premultiplied", False))
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autotiling = bool(info.get("autotiling", tile_rows_log2 == tile_cols_log2 == 0))
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icc_profile = info.get("icc_profile", im.info.get("icc_profile"))
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exif_orientation = 1
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if exif := info.get("exif"):
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if isinstance(exif, Image.Exif):
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exif_data = exif
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else:
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exif_data = Image.Exif()
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exif_data.load(exif)
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if ExifTags.Base.Orientation in exif_data:
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exif_orientation = exif_data.pop(ExifTags.Base.Orientation)
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exif = exif_data.tobytes() if exif_data else b""
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elif isinstance(exif, Image.Exif):
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exif = exif_data.tobytes()
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xmp = info.get("xmp")
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if isinstance(xmp, str):
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xmp = xmp.encode("utf-8")
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advanced = info.get("advanced")
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if advanced is not None:
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if isinstance(advanced, dict):
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advanced = advanced.items()
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try:
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advanced = tuple(advanced)
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except TypeError:
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invalid = True
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else:
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invalid = any(not isinstance(v, tuple) or len(v) != 2 for v in advanced)
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if invalid:
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msg = (
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"advanced codec options must be a dict of key-value string "
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"pairs or a series of key-value two-tuples"
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)
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raise ValueError(msg)
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# Setup the AVIF encoder
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enc = _avif.AvifEncoder(
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im.size,
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subsampling,
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quality,
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speed,
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max_threads,
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codec,
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range_,
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tile_rows_log2,
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tile_cols_log2,
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alpha_premultiplied,
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autotiling,
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icc_profile or b"",
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exif or b"",
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exif_orientation,
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xmp or b"",
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advanced,
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)
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# Add each frame
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frame_idx = 0
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frame_duration = 0
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cur_idx = im.tell()
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is_single_frame = total == 1
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try:
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for ims in [im] + append_images:
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# Get number of frames in this image
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nfr = getattr(ims, "n_frames", 1)
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for idx in range(nfr):
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ims.seek(idx)
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# Make sure image mode is supported
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frame = ims
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rawmode = ims.mode
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if ims.mode not in {"RGB", "RGBA"}:
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rawmode = "RGBA" if ims.has_transparency_data else "RGB"
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frame = ims.convert(rawmode)
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# Update frame duration
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if isinstance(duration, (list, tuple)):
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frame_duration = duration[frame_idx]
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else:
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frame_duration = duration
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# Append the frame to the animation encoder
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enc.add(
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frame.tobytes("raw", rawmode),
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frame_duration,
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frame.size,
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rawmode,
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is_single_frame,
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)
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# Update frame index
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frame_idx += 1
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if not save_all:
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break
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finally:
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im.seek(cur_idx)
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# Get the final output from the encoder
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data = enc.finish()
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if data is None:
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msg = "cannot write file as AVIF (encoder returned None)"
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raise OSError(msg)
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fp.write(data)
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Image.register_open(AvifImageFile.format, AvifImageFile, _accept)
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if SUPPORTED:
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Image.register_save(AvifImageFile.format, _save)
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Image.register_save_all(AvifImageFile.format, _save_all)
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Image.register_extensions(AvifImageFile.format, [".avif", ".avifs"])
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Image.register_mime(AvifImageFile.format, "image/avif")
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