70 строки
2.7 KiB
Python
Исполняемый файл
70 строки
2.7 KiB
Python
Исполняемый файл
#!/usr/bin/env pytest
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###############################################################################
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# $Id$
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#
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# Project: GDAL/OGR Test Suite
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# Purpose: Test AsyncReader interface
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# Author: Even Rouault <even dot rouault at spatialys.com>
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#
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###############################################################################
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# Copyright (c) 2010, Even Rouault <even dot rouault at spatialys.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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###############################################################################
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from osgeo import gdal
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###############################################################################
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# Test AsyncReader interface on the default (synchronous) implementation
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def test_asyncreader_1():
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ds = gdal.Open("data/rgbsmall.tif")
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asyncreader = ds.BeginAsyncReader(0, 0, ds.RasterXSize, ds.RasterYSize)
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buf = asyncreader.GetBuffer()
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result = asyncreader.GetNextUpdatedRegion(0)
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assert result == [
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gdal.GARIO_COMPLETE,
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0,
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0,
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ds.RasterXSize,
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ds.RasterYSize,
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], "wrong return values for GetNextUpdatedRegion()"
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ds.EndAsyncReader(asyncreader)
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asyncreader = None
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out_ds = gdal.GetDriverByName("GTiff").Create(
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"/vsimem/asyncresult.tif", ds.RasterXSize, ds.RasterYSize, ds.RasterCount
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)
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out_ds.WriteRaster(0, 0, ds.RasterXSize, ds.RasterYSize, buf)
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expected_cs = [ds.GetRasterBand(i + 1).Checksum() for i in range(ds.RasterCount)]
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cs = [out_ds.GetRasterBand(i + 1).Checksum() for i in range(ds.RasterCount)]
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ds = None
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out_ds = None
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gdal.Unlink("/vsimem/asyncresult.tif")
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for i, csum in enumerate(cs):
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assert csum == expected_cs[i], "did not get expected checksum for band %d" % (
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i + 1
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)
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