Add LERC support

Author: kylebarron

README.md

@@ -28,7 +28,7 @@ Fast, async GeoTIFF and [Cloud-Optimized GeoTIFF][cogeo] (COG) reader for Python
 - Lightweight with **no GDAL dependency**.
 - Access data from AWS S3, Google Cloud Storage, and Azure Storage via **integration with [obstore]**.
 - **Full type hinting** for all operations.
-- **Broad decompression support**: Deflate, LZMA, LZW, JPEG, JPEG2000, WebP, ZSTD.
+- **Broad decompression support**: Deflate, JPEG, JPEG2000, LERC, LERC_DEFLATE, LERC_ZSTD, LZMA, LZW, WebP, ZSTD.
 - Support for **any arbitrary backend** via [obspec] protocols.
 
 [Affine]: https://affine.readthedocs.io/en/latest/

fixtures/geotiff-test-data

@@ -6,13 +6,16 @@
     from tests.conftest import Variant
 
 ALL_DATA_IMAGES: list[tuple[str, Variant]] = [
+    ("float32_1band_lerc_block32", "rasterio"),
+    ("float32_1band_lerc_deflate_block32", "rasterio"),
+    ("float32_1band_lerc_zstd_block32", "rasterio"),
+    ("nlcd_landcover", "nlcd"),
     ("uint16_1band_lzw_block128_predictor2", "rasterio"),
     ("uint8_1band_deflate_block128_unaligned", "rasterio"),
-    ("uint8_rgb_deflate_block64_cog", "rasterio"),
     ("uint8_1band_lzma_block64", "rasterio"),
+    ("uint8_rgb_deflate_block64_cog", "rasterio"),
     ("uint8_rgb_webp_block64_cog", "rasterio"),
     ("uint8_rgba_webp_block64_cog", "rasterio"),
-    ("nlcd_landcover", "nlcd"),
 ]
 """All fixtures where the data can be compared with rasterio."""
 
@@ -21,8 +24,6 @@
     *ALL_DATA_IMAGES,
     # YCbCr is auto-decompressed by rasterio
     ("maxar_opendata_yellowstone_visual", "vantor"),
-    # we don't support LERC yet
-    ("float32_1band_lerc_block32", "rasterio"),
 ]
 """All fixtures where we test metadata parsing."""