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# -*- coding: utf-8 -*-
"""
***************************************************************************
SplitRGBBands.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
from qgis.PyQt.QtGui import QIcon
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.core.parameters import ParameterRaster
from processing.core.outputs import OutputRaster
from processing.tools.system import getTempFilename
from . import SagaUtils
pluginPath = os.path.normpath(os.path.join(
os.path.split(os.path.dirname(__file__))[0], os.pardir))
class SplitRGBBands(GeoAlgorithm):
INPUT = 'INPUT'
R = 'R'
G = 'G'
B = 'B'
def getIcon(self):
return QIcon(os.path.join(pluginPath, 'images', 'saga.png'))
def defineCharacteristics(self):
self.name, self.i18n_name = self.trAlgorithm('Split RGB bands')
self.group, self.i18n_group = self.trAlgorithm('Image tools')
self.addParameter(ParameterRaster(SplitRGBBands.INPUT,
self.tr('Input layer'), False))
self.addOutput(OutputRaster(SplitRGBBands.R,
self.tr('Output R band layer')))
self.addOutput(OutputRaster(SplitRGBBands.G,
self.tr('Output G band layer')))
self.addOutput(OutputRaster(SplitRGBBands.B,
self.tr('Output B band layer')))
def processAlgorithm(self, progress):
# TODO: check correct num of bands
input = self.getParameterValue(SplitRGBBands.INPUT)
temp = getTempFilename(None).replace('.', '')
basename = os.path.basename(temp)
validChars = \
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
safeBasename = ''.join(c for c in basename if c in validChars)
temp = os.path.join(os.path.dirname(temp), safeBasename)
r = self.getOutputValue(SplitRGBBands.R)
g = self.getOutputValue(SplitRGBBands.G)
b = self.getOutputValue(SplitRGBBands.B)
commands = []
version = SagaUtils.getSagaInstalledVersion(True) # NOQA
trailing = ""
lib = ""
commands.append('%sio_gdal 0 -GRIDS "%s" -FILES "%s"' % (lib, temp, input)
)
commands.append('%sio_gdal 1 -GRIDS "%s_%s1.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' % (lib, temp, trailing, r)
)
commands.append('%sio_gdal 1 -GRIDS "%s_%s2.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' % (lib, temp, trailing, g)
)
commands.append('%sio_gdal 1 -GRIDS "%s_%s3.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' % (lib, temp, trailing, b)
)
SagaUtils.createSagaBatchJobFileFromSagaCommands(commands)
SagaUtils.executeSaga(progress)
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