Source code for osxphotos.photoinfo._photoinfo_exifinfo
""" PhotoInfo methods to expose EXIF info from the library """
import logging
from dataclasses import dataclass
from .._constants import _PHOTOS_4_VERSION
@dataclass(frozen=True)
class ExifInfo:
""" EXIF info associated with a photo from the Photos library """
flash_fired: bool
iso: int
metering_mode: int
sample_rate: int
track_format: int
white_balance: int
aperture: float
bit_rate: float
duration: float
exposure_bias: float
focal_length: float
fps: float
latitude: float
longitude: float
shutter_speed: float
camera_make: str
camera_model: str
codec: str
lens_model: str
@property
def exif_info(self):
""" Returns an ExifInfo object with the EXIF data for photo
Note: the returned EXIF data is the data Photos stores in the database on import;
ExifInfo does not provide access to the EXIF info in the actual image file
Some or all of the fields may be None
Only valid for Photos 5; on earlier database returns None
"""
if self._db._db_version <= _PHOTOS_4_VERSION:
logging.debug(f"exif_info not implemented for this database version")
return None
try:
exif = self._db._db_exifinfo_uuid[self.uuid]
exif_info = ExifInfo(
iso=exif["ZISO"],
flash_fired=True if exif["ZFLASHFIRED"] == 1 else False,
metering_mode=exif["ZMETERINGMODE"],
sample_rate=exif["ZSAMPLERATE"],
track_format=exif["ZTRACKFORMAT"],
white_balance=exif["ZWHITEBALANCE"],
aperture=exif["ZAPERTURE"],
bit_rate=exif["ZBITRATE"],
duration=exif["ZDURATION"],
exposure_bias=exif["ZEXPOSUREBIAS"],
focal_length=exif["ZFOCALLENGTH"],
fps=exif["ZFPS"],
latitude=exif["ZLATITUDE"],
longitude=exif["ZLONGITUDE"],
shutter_speed=exif["ZSHUTTERSPEED"],
camera_make=exif["ZCAMERAMAKE"],
camera_model=exif["ZCAMERAMODEL"],
codec=exif["ZCODEC"],
lens_model=exif["ZLENSMODEL"],
)
except KeyError:
logging.debug(f"Could not find exif record for uuid {self.uuid}")
exif_info = ExifInfo(
iso=None,
flash_fired=None,
metering_mode=None,
sample_rate=None,
track_format=None,
white_balance=None,
aperture=None,
bit_rate=None,
duration=None,
exposure_bias=None,
focal_length=None,
fps=None,
latitude=None,
longitude=None,
shutter_speed=None,
camera_make=None,
camera_model=None,
codec=None,
lens_model=None,
)
return exif_info