[23] | 1 | #!/usr/bin/env python |
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| 2 | #****************************************************************************** |
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| 3 | # $Id: gdalchksum.py 18194 2009-12-06 20:07:45Z rouault $ |
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| 4 | # |
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| 5 | # Project: GDAL |
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| 6 | # Purpose: Application to checksum a GDAL image file. |
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| 7 | # Author: Frank Warmerdam, warmerdam@pobox.com |
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| 8 | # |
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| 9 | #****************************************************************************** |
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| 10 | # Copyright (c) 2003, Frank Warmerdam <warmerdam@pobox.com> |
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| 11 | # |
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| 12 | # Permission is hereby granted, free of charge, to any person obtaining a |
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| 13 | # copy of this software and associated documentation files (the "Software"), |
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| 14 | # to deal in the Software without restriction, including without limitation |
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| 15 | # the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 16 | # and/or sell copies of the Software, and to permit persons to whom the |
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| 17 | # Software is furnished to do so, subject to the following conditions: |
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| 18 | # |
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| 19 | # The above copyright notice and this permission notice shall be included |
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| 20 | # in all copies or substantial portions of the Software. |
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| 21 | # |
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| 22 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 23 | # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 24 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 25 | # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 26 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 27 | # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 28 | # DEALINGS IN THE SOFTWARE. |
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| 29 | #****************************************************************************** |
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| 30 | |
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| 31 | try: |
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| 32 | from osgeo import gdal |
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| 33 | except ImportError: |
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| 34 | import gdal |
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| 35 | |
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| 36 | import sys |
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| 37 | |
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| 38 | def Usage(): |
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| 39 | print('Usage: gdalchksum.py [-b band] [-srcwin xoff yoff xsize ysize] file') |
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| 40 | sys.exit(1) |
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| 41 | |
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| 42 | # ============================================================================= |
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| 43 | # Mainline |
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| 44 | # ============================================================================= |
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| 45 | |
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| 46 | srcwin = None |
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| 47 | bands = [] |
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| 48 | |
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| 49 | filename = None |
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| 50 | |
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| 51 | gdal.AllRegister() |
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| 52 | argv = gdal.GeneralCmdLineProcessor( sys.argv ) |
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| 53 | if argv is None: |
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| 54 | sys.exit( 0 ) |
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| 55 | |
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| 56 | # Parse command line arguments. |
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| 57 | i = 1 |
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| 58 | while i < len(argv): |
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| 59 | arg = argv[i] |
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| 60 | |
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| 61 | if arg == '-b': |
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| 62 | i = i + 1 |
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| 63 | bands.append( int(argv[i]) ) |
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| 64 | |
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| 65 | elif arg == '-srcwin': |
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| 66 | srcwin = [int(argv[i+1]),int(argv[i+2]), |
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| 67 | int(argv[i+3]),int(argv[i+3]) ] |
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| 68 | i = i + 4 |
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| 69 | |
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| 70 | elif filename is None: |
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| 71 | filename = argv[i] |
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| 72 | |
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| 73 | else: |
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| 74 | Usage() |
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| 75 | |
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| 76 | i = i + 1 |
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| 77 | |
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| 78 | if filename is None: |
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| 79 | Usage() |
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| 80 | |
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| 81 | # Open source file |
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| 82 | |
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| 83 | ds = gdal.Open( filename ) |
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| 84 | if ds is None: |
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| 85 | print('Unable to open ', filename) |
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| 86 | sys.exit(1) |
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| 87 | |
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| 88 | # Default values |
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| 89 | |
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| 90 | if srcwin is None: |
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| 91 | srcwin = [ 0, 0, ds.RasterXSize, ds.RasterYSize ] |
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| 92 | |
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| 93 | if len(bands) == 0: |
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| 94 | bands = list(range(1,(ds.RasterCount+1))) |
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| 95 | |
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| 96 | |
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| 97 | # Generate checksums |
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| 98 | |
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| 99 | for band_num in bands: |
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| 100 | oBand = ds.GetRasterBand( band_num ) |
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| 101 | result = oBand.Checksum( srcwin[0], srcwin[1], srcwin[2], srcwin[3] ) |
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| 102 | print(result) |
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| 103 | |
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| 104 | ds = None |
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| 105 | |
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