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Minimal Python typing interface
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‎python/python/async_tiff/_async_tiff.pyi‎

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from ._geo import GeoKeyDirectory as GeoKeyDirectory
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from ._ifd import ImageFileDirectory as ImageFileDirectory
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from ._tiff import TIFF as TIFF

‎python/python/async_tiff/_geo.pyi‎

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class GeoKeyDirectory:
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@property
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def model_type(self) -> int | None: ...
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@property
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def raster_type(self) -> int | None: ...
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@property
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def citation(self) -> str | None: ...
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@property
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def geographic_type(self) -> int | None: ...
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@property
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def geog_citation(self) -> str | None: ...
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@property
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def geog_geodetic_datum(self) -> int | None: ...
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@property
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def geog_prime_meridian(self) -> int | None: ...
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@property
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def geog_linear_units(self) -> int | None: ...
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@property
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def geog_linear_unit_size(self) -> float | None: ...
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@property
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def geog_angular_units(self) -> int | None: ...
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@property
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def geog_angular_unit_size(self) -> float | None: ...
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@property
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def geog_ellipsoid(self) -> int | None: ...
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@property
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def geog_semi_major_axis(self) -> float | None: ...
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@property
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def geog_semi_minor_axis(self) -> float | None: ...
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@property
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def geog_inv_flattening(self) -> float | None: ...
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@property
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def geog_azimuth_units(self) -> int | None: ...
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@property
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def geog_prime_meridian_long(self) -> float | None: ...
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@property
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def projected_type(self) -> int | None: ...
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@property
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def proj_citation(self) -> str | None: ...
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@property
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def projection(self) -> int | None: ...
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@property
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def proj_coord_trans(self) -> int | None: ...
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@property
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def proj_linear_units(self) -> int | None: ...
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@property
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def proj_linear_unit_size(self) -> float | None: ...
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@property
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def proj_std_parallel1(self) -> float | None: ...
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@property
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def proj_std_parallel2(self) -> float | None: ...
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@property
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def proj_nat_origin_long(self) -> float | None: ...
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@property
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def proj_nat_origin_lat(self) -> float | None: ...
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@property
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def proj_false_easting(self) -> float | None: ...
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@property
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def proj_false_northing(self) -> float | None: ...
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@property
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def proj_false_origin_long(self) -> float | None: ...
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@property
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def proj_false_origin_lat(self) -> float | None: ...
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@property
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def proj_false_origin_easting(self) -> float | None: ...
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@property
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def proj_false_origin_northing(self) -> float | None: ...
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@property
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def proj_center_long(self) -> float | None: ...
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@property
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def proj_center_lat(self) -> float | None: ...
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@property
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def proj_center_easting(self) -> float | None: ...
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@property
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def proj_center_northing(self) -> float | None: ...
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@property
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def proj_scale_at_nat_origin(self) -> float | None: ...
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@property
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def proj_scale_at_center(self) -> float | None: ...
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@property
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def proj_azimuth_angle(self) -> float | None: ...
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@property
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def proj_straight_vert_pole_long(self) -> float | None: ...
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@property
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def vertical(self) -> int | None: ...
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@property
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def vertical_citation(self) -> str | None: ...
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@property
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def vertical_datum(self) -> int | None: ...
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@property
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def vertical_units(self) -> int | None: ...

‎python/python/async_tiff/_ifd.pyi‎

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from .enums import (
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CompressionMethod,
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PhotometricInterpretation,
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PlanarConfiguration,
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Predictor,
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ResolutionUnit,
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SampleFormat,
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)
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from ._geo import GeoKeyDirectory
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class ImageFileDirectory:
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@property
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def new_subfile_type(self) -> int | None: ...
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@property
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def image_width(self) -> int:
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"""The number of columns in the image, i.e., the number of pixels per row."""
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@property
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def image_height(self) -> int:
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"""The number of rows of pixels in the image."""
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@property
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def bits_per_sample(self) -> list[int]: ...
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@property
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def compression(self) -> CompressionMethod: ...
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@property
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def photometric_interpretation(self) -> PhotometricInterpretation: ...
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@property
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def document_name(self) -> str | None: ...
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@property
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def image_description(self) -> str | None: ...
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@property
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def strip_offsets(self) -> list[int] | None: ...
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@property
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def orientation(self) -> int | None: ...
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@property
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def samples_per_pixel(self) -> int:
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"""
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The number of components per pixel.
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SamplesPerPixel is usually 1 for bilevel, grayscale, and palette-color images.
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SamplesPerPixel is usually 3 for RGB images. If this value is higher,
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ExtraSamples should give an indication of the meaning of the additional
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channels.
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"""
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@property
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def rows_per_strip(self) -> int | None: ...
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@property
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def strip_byte_counts(self) -> int | None: ...
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@property
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def min_sample_value(self) -> int | None: ...
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@property
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def max_sample_value(self) -> int | None: ...
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@property
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def x_resolution(self) -> float | None:
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"""The number of pixels per ResolutionUnit in the ImageWidth direction."""
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@property
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def y_resolution(self) -> float | None:
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"""The number of pixels per ResolutionUnit in the ImageLength direction."""
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@property
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def planar_configuration(self) -> PlanarConfiguration: ...
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@property
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def resolution_unit(self) -> ResolutionUnit | None: ...
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@property
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def software(self) -> str | None: ...
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@property
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def date_time(self) -> str | None: ...
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@property
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def artist(self) -> str | None: ...
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@property
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def host_computer(self) -> str | None: ...
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@property
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def predictor(self) -> Predictor | None: ...
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@property
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def tile_width(self) -> int: ...
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@property
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def tile_height(self) -> int: ...
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@property
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def tile_offsets(self) -> list[int]: ...
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@property
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def tile_byte_counts(self) -> list[int]: ...
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@property
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def extra_samples(self) -> bytes | None: ...
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@property
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def sample_format(self) -> list[SampleFormat]: ...
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@property
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def jpeg_tables(self) -> bytes | None: ...
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@property
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def copyright(self) -> str | None: ...
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@property
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def geo_key_directory(self) -> GeoKeyDirectory | None: ...
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@property
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def model_pixel_scale(self) -> list[float] | None: ...
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@property
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def model_tiepoint(self) -> list[float] | None: ...

‎python/python/async_tiff/_tiff.pyi‎

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from typing import Any
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from ._ifd import ImageFileDirectory
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class TIFF:
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@classmethod
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async def open(
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cls, path: str, *, store: Any, prefetch: int | None = 16384
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) -> TIFF: ...
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@property
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def ifds(self) -> list[ImageFileDirectory]: ...

‎python/src/tiff.rs‎

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@@ -37,6 +37,7 @@ impl PyTIFF {
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Ok(cog_reader)
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}
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#[getter]
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fn ifds(&self) -> Vec<PyImageFileDirectory> {
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let ifds = self.0.ifds();
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ifds.as_ref().iter().map(|ifd| ifd.clone().into()).collect()

‎python/tests/test_cog.py‎

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@@ -1,13 +1,19 @@
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import async_tiff
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from time import time
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from async_tiff import TIFF
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from async_tiff.store import S3Store
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store = S3Store("sentinel-cogs", region="us-west-2", skip_signature=True)
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path = "sentinel-s2-l2a-cogs/12/S/UF/2022/6/S2B_12SUF_20220609_0_L2A/B04.tif"
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8-
# 2 min, 15s
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tiff = await TIFF.open(path, store=store, prefetch=32768)
10-
ifds = tiff.ifds()
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start = time()
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tiff = await TIFF.open(path, store=store, prefetch=32768)
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end = time()
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end - start
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ifds = tiff.ifds
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ifd = ifds[0]
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ifd.compression
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ifd.tile_height

‎src/cog.rs‎

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@@ -66,11 +66,8 @@ mod test {
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let cog_reader = COGReader::try_open(Box::new(reader.clone())).await.unwrap();
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let ifd = &cog_reader.ifds.as_ref()[1];
69-
// dbg!(ifd.geotransform());
70-
dbg!(ifd);
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let tile = ifd.get_tile(0, 0, Box::new(reader)).await.unwrap();
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std::fs::write("img.buf", tile).unwrap();
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// dbg!(tile.len());
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}
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#[ignore = "local file"]

‎src/ifd.rs‎

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@@ -47,7 +47,6 @@ impl ImageFileDirectories {
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next_ifd_offset = ifd.next_ifd_offset();
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ifds.push(ifd);
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}
50-
dbg!(&ifds[0].compression);
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Ok(Self { ifds })
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}
@@ -771,7 +770,6 @@ impl ImageFileDirectory {
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async fn read_tag(cursor: &mut AsyncCursor) -> Result<(Tag, Value)> {
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let code = cursor.read_u16().await?;
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let tag_name = Tag::from_u16_exhaustive(code);
774-
// dbg!(&tag_name);
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776774
let current_cursor_position = cursor.position();
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@@ -823,8 +821,6 @@ async fn read_tag_value(
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// 2a: the value is 5-8 bytes and we're in BigTiff mode.
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// We don't support bigtiff yet
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826-
// dbg!(value_byte_length);
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// dbg!(tag_type);
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// NOTE: we should only be reading value_byte_length when it's 4 bytes or fewer. Right now
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// we're reading even if it's 8 bytes, but then only using the first 4 bytes of this
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// buffer.

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