_enpt_alg_base.py 14.2 KB
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# -*- coding: utf-8 -*-

# enpt_enmapboxapp, A QGIS EnMAPBox plugin providing a GUI for the EnMAP processing tools (EnPT)
#
# Copyright (C) 2019  Daniel Scheffler (GFZ Potsdam, daniel.scheffler@gfz-potsdam.de)
#
# This software was developed within the context of the EnMAP project supported
# by the DLR Space Administration with funds of the German Federal Ministry of
# Economic Affairs and Energy (on the basis of a decision by the German Bundestag:
# 50 EE 1529) and contributions from DLR, GFZ and OHB System AG.
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with this program.  If not, see <http://www.gnu.org/licenses/>.

"""This module provides the base class for EnPTAlgorithm and ExternalEnPTAlgorithm."""

import os
from os.path import expanduser
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import psutil
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from datetime import date
from multiprocessing import cpu_count
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from threading import Thread
from queue import Queue
from subprocess import Popen, PIPE

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from qgis.core import \
    (QgsProcessingAlgorithm,
     QgsProcessingParameterFile,
     QgsProcessingParameterNumber,
     QgsProcessingParameterFolderDestination,
     QgsProcessingParameterBoolean,
     QgsProcessingParameterString
     )

from .version import __version__


class _EnPTBaseAlgorithm(QgsProcessingAlgorithm):
    # NOTE: The parameter assignments made here follow the parameter names in enpt/options/options_schema.py

    # Input parameters
    P_json_config = 'json_config'
    P_CPUs = 'CPUs'
    P_path_l1b_enmap_image = 'path_l1b_enmap_image'
    P_path_l1b_enmap_image_gapfill = 'path_l1b_enmap_image_gapfill'
    P_path_dem = 'path_dem'
    P_average_elevation = 'average_elevation'
    P_output_dir = 'output_dir'
    P_working_dir = 'working_dir'
    P_n_lines_to_append = 'n_lines_to_append'
    P_disable_progress_bars = 'disable_progress_bars'
    P_path_earthSunDist = 'path_earthSunDist'
    P_path_solar_irr = 'path_solar_irr'
    P_scale_factor_toa_ref = 'scale_factor_toa_ref'
    P_enable_keystone_correction = 'enable_keystone_correction'
    P_enable_vnir_swir_coreg = 'enable_vnir_swir_coreg'
    P_path_reference_image = 'path_reference_image'
    P_enable_ac = 'enable_ac'
    P_auto_download_ecmwf = 'auto_download_ecmwf'
    P_enable_ice_retrieval = 'enable_ice_retrieval'
    P_enable_cloud_screening = 'enable_cloud_screening'
    P_scale_factor_boa_ref = 'scale_factor_boa_ref'
    P_run_smile_P = 'run_smile_P'
    P_run_deadpix_P = 'run_deadpix_P'
    P_deadpix_P_algorithm = 'deadpix_P_algorithm'
    P_deadpix_P_interp_spectral = 'deadpix_P_interp_spectral'
    P_deadpix_P_interp_spatial = 'deadpix_P_interp_spatial'
    P_ortho_resampAlg = 'ortho_resampAlg'
    P_vswir_overlap_algorithm = 'vswir_overlap_algorithm'

    # # Output parameters
    P_OUTPUT_RASTER = 'outraster'
    # P_OUTPUT_VECTOR = 'outvector'
    # P_OUTPUT_FILE = 'outfile'
    P_OUTPUT_FOLDER = 'outfolder'

    def group(self):
        return 'Pre-Processing'

    def groupId(self):
        return 'PreProcessing'

    def name(self):
        return 'EnPTAlgorithm'

    def displayName(self):
        return 'EnMAP processing tool algorithm (v%s)' % __version__

    def createInstance(self, *args, **kwargs):
        return type(self)()

    @staticmethod
    def _get_default_output_dir():
        userhomedir = expanduser('~')

        default_enpt_dir = \
            os.path.join(userhomedir, 'Documents', 'EnPT', 'Output') if os.name == 'nt' else\
            os.path.join(userhomedir, 'EnPT', 'Output')

        outdir_nocounter = os.path.join(default_enpt_dir, date.today().strftime('%Y%m%d'))

        counter = 1
        while os.path.isdir('%s__%s' % (outdir_nocounter, counter)):
            counter += 1

        return '%s__%s' % (outdir_nocounter, counter)

    def initAlgorithm(self, configuration=None):
        self.addParameter(QgsProcessingParameterFile(
            name=self.P_json_config, description='Configuration JSON template file',
            behavior=QgsProcessingParameterFile.File, extension='json',
            defaultValue=None,
            optional=True))

        self.addParameter(QgsProcessingParameterNumber(
            name=self.P_CPUs,
            description='Number of CPU cores to be used for processing',
            type=QgsProcessingParameterNumber.Integer,
            defaultValue=cpu_count(), minValue=0, maxValue=cpu_count(),
            optional=True))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_path_l1b_enmap_image,
            description='L1B EnMAP image (zip-archive or root directory)'))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_path_l1b_enmap_image_gapfill,
            description='Adjacent EnMAP L1B image to be used for gap-filling (zip-archive or root directory)',
            optional=True))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_path_dem,
            description='Input path of digital elevation model in map or sensor geometry; GDAL compatible file '
                        'format \n(must cover the EnMAP L1B data completely if given in map geometry or must have the '
                        'same \npixel dimensions like the EnMAP L1B data if given in sensor geometry)',
            optional=True))

        self.addParameter(QgsProcessingParameterNumber(
            name=self.P_average_elevation,
            description='Average elevation in meters above sea level \n'
                        '(may be provided if no DEM is available and ignored if DEM is given)',
            type=QgsProcessingParameterNumber.Integer,
            defaultValue=0,
            optional=True))

        self.addParameter(QgsProcessingParameterFolderDestination(
            name=self.P_output_dir,
            description='Output directory where processed data and log files are saved',
            defaultValue=self._get_default_output_dir(),
            optional=True))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_working_dir,
            description='Directory to be used for temporary files',
            behavior=QgsProcessingParameterFile.Folder,
            defaultValue=None,
            optional=True))

        self.addParameter(QgsProcessingParameterNumber(
            name=self.P_n_lines_to_append,
            description='Number of lines to be added to the main image [if not given, use the whole imgap]',
            type=QgsProcessingParameterNumber.Integer,
            defaultValue=None,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_disable_progress_bars,
            description='Disable all progress bars during processing',
            defaultValue=True,
            optional=True))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_path_earthSunDist,
            description='Input path of the earth sun distance model',
            defaultValue=None,
            optional=True))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_path_solar_irr,
            description='Input path of the solar irradiance model',
            defaultValue=None,
            optional=True))

        self.addParameter(QgsProcessingParameterNumber(
            name=self.P_scale_factor_toa_ref,
            description='Scale factor to be applied to TOA reflectance result',
            type=QgsProcessingParameterNumber.Integer,
            defaultValue=10000,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_enable_keystone_correction,
            description='Keystone correction',
            defaultValue=False,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_enable_vnir_swir_coreg,
            description='VNIR/SWIR co-registration',
            defaultValue=False,
            optional=True))

        self.addParameter(QgsProcessingParameterFile(
            name=self.P_path_reference_image,
            description='Reference image for co-registration.',
            defaultValue=None,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_enable_ac,
            description='Enable atmospheric correction using SICOR algorithm',
            defaultValue=True,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_auto_download_ecmwf,
            description='Automatically download ECMWF data for atmospheric correction',
            defaultValue=False,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_enable_ice_retrieval,
            description='Enable ice retrieval (increases accuracy of water vapour retrieval)',
            defaultValue=True,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_enable_cloud_screening,
            description='Cloud screening during atmospheric correction',
            defaultValue=False,
            optional=True))

        self.addParameter(QgsProcessingParameterNumber(
            name=self.P_scale_factor_boa_ref,
            description='Scale factor to be applied to BOA reflectance result',
            type=QgsProcessingParameterNumber.Integer,
            defaultValue=10000,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_run_smile_P,
            description='Smile detection and correction (provider smile coefficients are ignored)',
            defaultValue=False,
            optional=True))

        self.addParameter(QgsProcessingParameterBoolean(
            name=self.P_run_deadpix_P,
            description='Dead pixel correction',
            defaultValue=True,
            optional=True))

        self.addParameter(QgsProcessingParameterString(
            name=self.P_deadpix_P_algorithm,
            description="Algorithm for dead pixel correction ('spectral' or 'spatial')",
            defaultValue='spectral',
            multiLine=False,
            optional=True))

        self.addParameter(QgsProcessingParameterString(
            name=self.P_deadpix_P_interp_spectral,
            description="Spectral interpolation algorithm to be used during dead pixel correction "
                        "('linear', 'bilinear', 'cubic', 'spline')",
            defaultValue='linear',
            multiLine=False,
            optional=True))

        self.addParameter(QgsProcessingParameterString(
            name=self.P_deadpix_P_interp_spatial,
            description="Spatial interpolation algorithm to be used during dead pixel correction "
                        "('linear', 'bilinear', 'cubic', 'spline')",
            defaultValue='linear',
            multiLine=False,
            optional=True))

        self.addParameter(QgsProcessingParameterString(
            name=self.P_ortho_resampAlg,
            description="Ortho-rectification resampling algorithm ('nearest', 'bilinear', 'gauss')",
            defaultValue='bilinear',
            multiLine=False,
            optional=True))

        self.addParameter(QgsProcessingParameterString(
            name=self.P_vswir_overlap_algorithm,
            description="Algorithm specifying how to deal with the spectral bands in the VNIR/SWIR spectral overlap "
                        "region ('order_by_wvl', 'average', 'vnir_only', 'swir_only')",
            defaultValue='swir_only',
            multiLine=False,
            optional=True))

    @staticmethod
    def shortHelpString(*args, **kwargs):
        """Example:

        '<p>Here comes the HTML documentation.</p>' \
        '<h3>With Headers...</h3>' \
        '<p>and Hyperlinks: <a href="www.google.de">Google</a></p>'

        :param args:
        :param kwargs:
        """

        text = \
            '<p>General information about this EnMAP box app can be found ' \
            '<a href="https://enmap.git-pages.gfz-potsdam.de/GFZ_Tools_EnMAP_BOX/enpt_enmapboxapp/doc/">here</a>' \
            '.</p>' \
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            '<p>Type <i>enpt -h</i> into a shell to get further information about individual ' \
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            'parameters.</p>'

        return text

    def helpString(self):
        return self.shortHelpString()

    @staticmethod
    def helpUrl(*args, **kwargs):
        return 'https://enmap.git-pages.gfz-potsdam.de/GFZ_Tools_EnMAP_BOX/enpt_enmapboxapp/doc/'
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    @staticmethod
    def _run_cmd(cmd, qgis_feedback=None, **kwargs):
        """Execute external command and get its stdout, exitcode and stderr.

        Code based on: https://stackoverflow.com/a/31867499

        :param cmd: a normal shell command including parameters
        """

        def reader(pipe, queue):
            try:
                with pipe:
                    for line in iter(pipe.readline, b''):
                        queue.put((pipe, line))
            finally:
                queue.put(None)

        process = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True, **kwargs)
        q = Queue()
        Thread(target=reader, args=[process.stdout, q]).start()
        Thread(target=reader, args=[process.stderr, q]).start()

        # for _ in range(2):
        for source, line in iter(q.get, None):
            if qgis_feedback.isCanceled():
                # qgis_feedback.reportError('CANCELED')

                proc2kill = psutil.Process(process.pid)
                for proc in proc2kill.children(recursive=True):
                    proc.kill()
                proc2kill.kill()

                raise KeyboardInterrupt

            linestr = line.decode('latin-1').rstrip()
            # print("%s: %s" % (source, linestr))
            if source.name == 3:
                qgis_feedback.pushInfo(linestr)
            if source.name == 4:
                qgis_feedback.reportError(linestr)

        exitcode = process.poll()

        return exitcode