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venv/Lib/site-packages/django/contrib/gis/gdal/raster/const.py

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+"""
+GDAL - Constant definitions
+"""
+from ctypes import (
+    c_double, c_float, c_int16, c_int32, c_ubyte, c_uint16, c_uint32,
+)
+
+# See https://gdal.org/api/raster_c_api.html#_CPPv412GDALDataType
+GDAL_PIXEL_TYPES = {
+    0: 'GDT_Unknown',  # Unknown or unspecified type
+    1: 'GDT_Byte',  # Eight bit unsigned integer
+    2: 'GDT_UInt16',  # Sixteen bit unsigned integer
+    3: 'GDT_Int16',  # Sixteen bit signed integer
+    4: 'GDT_UInt32',  # Thirty-two bit unsigned integer
+    5: 'GDT_Int32',  # Thirty-two bit signed integer
+    6: 'GDT_Float32',  # Thirty-two bit floating point
+    7: 'GDT_Float64',  # Sixty-four bit floating point
+    8: 'GDT_CInt16',  # Complex Int16
+    9: 'GDT_CInt32',  # Complex Int32
+    10: 'GDT_CFloat32',  # Complex Float32
+    11: 'GDT_CFloat64',  # Complex Float64
+}
+
+# A list of gdal datatypes that are integers.
+GDAL_INTEGER_TYPES = [1, 2, 3, 4, 5]
+
+# Lookup values to convert GDAL pixel type indices into ctypes objects.
+# The GDAL band-io works with ctypes arrays to hold data to be written
+# or to hold the space for data to be read into. The lookup below helps
+# selecting the right ctypes object for a given gdal pixel type.
+GDAL_TO_CTYPES = [
+    None, c_ubyte, c_uint16, c_int16, c_uint32, c_int32,
+    c_float, c_double, None, None, None, None
+]
+
+# List of resampling algorithms that can be used to warp a GDALRaster.
+GDAL_RESAMPLE_ALGORITHMS = {
+    'NearestNeighbour': 0,
+    'Bilinear': 1,
+    'Cubic': 2,
+    'CubicSpline': 3,
+    'Lanczos': 4,
+    'Average': 5,
+    'Mode': 6,
+}
+
+# See https://gdal.org/api/raster_c_api.html#_CPPv415GDALColorInterp
+GDAL_COLOR_TYPES = {
+    0: 'GCI_Undefined',  # Undefined, default value, i.e. not known
+    1: 'GCI_GrayIndex',  # Grayscale
+    2: 'GCI_PaletteIndex',  # Paletted
+    3: 'GCI_RedBand',  # Red band of RGBA image
+    4: 'GCI_GreenBand',  # Green band of RGBA image
+    5: 'GCI_BlueBand',  # Blue band of RGBA image
+    6: 'GCI_AlphaBand',  # Alpha (0=transparent, 255=opaque)
+    7: 'GCI_HueBand',  # Hue band of HLS image
+    8: 'GCI_SaturationBand',  # Saturation band of HLS image
+    9: 'GCI_LightnessBand',  # Lightness band of HLS image
+    10: 'GCI_CyanBand',  # Cyan band of CMYK image
+    11: 'GCI_MagentaBand',  # Magenta band of CMYK image
+    12: 'GCI_YellowBand',  # Yellow band of CMYK image
+    13: 'GCI_BlackBand',  # Black band of CMLY image
+    14: 'GCI_YCbCr_YBand',  # Y Luminance
+    15: 'GCI_YCbCr_CbBand',  # Cb Chroma
+    16: 'GCI_YCbCr_CrBand',  # Cr Chroma, also GCI_Max
+}
+
+# GDAL virtual filesystems prefix.
+VSI_FILESYSTEM_PREFIX = '/vsi'
+
+# Fixed base path for buffer-based GDAL in-memory files.
+VSI_MEM_FILESYSTEM_BASE_PATH = '/vsimem/'
+
+# Should the memory file system take ownership of the buffer, freeing it when
+# the file is deleted? (No, GDALRaster.__del__() will delete the buffer.)
+VSI_TAKE_BUFFER_OWNERSHIP = False
+
+# Should a VSI file be removed when retrieving its buffer?
+VSI_DELETE_BUFFER_ON_READ = False