/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set sw=2 sts=2 et cin: */
/* 
 * This file is part of the MUSE Instrument Pipeline
 * Copyright (C) 2005-2015 European Southern Observatory
 *
 * 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

/* This file was automatically generated */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

/*----------------------------------------------------------------------------*
 *                              Includes                                      *
 *----------------------------------------------------------------------------*/
#include <string.h> /* strcmp(), strstr() */
#include <strings.h> /* strcasecmp() */
#include <cpl.h>

#include "muse_ampl_z.h" /* in turn includes muse.h */

/*----------------------------------------------------------------------------*/
/**
  @defgroup recipe_muse_ampl         Recipe muse_ampl: Determine the instrumental throughput from exposures taken with the pico-amplifier / photo diode readings.
  @author Peter Weilbacher
  
        This recipe combines several separate amplifier images (flat-fields
        with special FITS headers containing pico amplifier measurements)
        into one master image file and computes the instrumental throughput per
        IFU (and slice).

        Processing trims the raw data and records the overscan statistics,
        subtracts the bias (taking account of the overscan, if overscan is not
        "none"), and optionally, the dark from each raw input image, converts
        them from adu to count, scales them according to their exposure time,
        and combines them using input parameters.

        To compute the throughput the image is converted into a pixel table, the
        flux is then integrated over the given filter band, and the ratio of the
        expected flux (FITS header INS.AMPL2.CURR) to measured flux is taken, in
        the same units. If a geometry table was given as input, the relative
        area of the IFUs is taken into account when computing the flux per unit
        area. The resulting ratio is the instrument efficiency (throughput) and
        saved as QC parameters for the whole input image and per slice in the
        output pixel table.
      
 */
/*----------------------------------------------------------------------------*/
/**@{*/

/*----------------------------------------------------------------------------*
 *                         Static variables                                   *
 *----------------------------------------------------------------------------*/
static const char *muse_ampl_help =
  "This recipe combines several separate amplifier images (flat-fields with special FITS headers containing pico amplifier measurements) into one master image file and computes the instrumental throughput per IFU (and slice). Processing trims the raw data and records the overscan statistics, subtracts the bias (taking account of the overscan, if overscan is not \"none\"), and optionally, the dark from each raw input image, converts them from adu to count, scales them according to their exposure time, and combines them using input parameters. To compute the throughput the image is converted into a pixel table, the flux is then integrated over the given filter band, and the ratio of the expected flux (FITS header INS.AMPL2.CURR) to measured flux is taken, in the same units. If a geometry table was given as input, the relative area of the IFUs is taken into account when computing the flux per unit area. The resulting ratio is the instrument efficiency (throughput) and saved as QC parameters for the whole input image and per slice in the output pixel table.";

static const char *muse_ampl_help_esorex =
  "\n\nInput frames for raw frame tag \"AMPL\":\n"
  "\n Frame tag            Type Req #Fr Description"
  "\n -------------------- ---- --- --- ------------"
  "\n AMPL                 raw   Y  >=3 Special raw flat-field taken with pico-amplifier readings in the FITS header"
  "\n MASTER_BIAS          calib Y    1 Master bias"
  "\n MASTER_DARK          calib .    1 Master dark"
  "\n BADPIX_TABLE         calib .      Known bad pixels"
  "\n GEOMETRY_TABLE       calib .    1 Relative positions of the slices in the field of view"
  "\n FILTER_LIST          calib Y    1 Filter definitions; here, it has to contain the filter curve for the filter given in INS.AMPL2.FILTER"
  "\n TRACE_TABLE          calib Y    1 Trace table"
  "\n WAVECAL_TABLE        calib Y    1 Wavelength calibration table"
  "\n\nProduct frames for raw frame tag \"AMPL\":\n"
  "\n Frame tag            Level    Description"
  "\n -------------------- -------- ------------"
  "\n MASTER_AMPL          final    Combined master AMPL image, written if --savemaster=true"
  "\n TABLE_AMPL           final    Output table with computations for each CCD pixel, written if --savetable=true."
  "\n AMPL_CONVOLVED       final    Combined and convolved master AMPL image";

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief   Create the recipe config for this plugin.

  @remark The recipe config is used to check for the tags as well as to create
          the documentation of this plugin.
 */
/*----------------------------------------------------------------------------*/
static cpl_recipeconfig *
muse_ampl_new_recipeconfig(void)
{
  cpl_recipeconfig *recipeconfig = cpl_recipeconfig_new();
      
  cpl_recipeconfig_set_tag(recipeconfig, "AMPL", 3, -1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "MASTER_BIAS", 1, 1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "MASTER_DARK", -1, 1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "BADPIX_TABLE", -1, -1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "GEOMETRY_TABLE", -1, 1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "FILTER_LIST", 1, 1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "TRACE_TABLE", 1, 1);
  cpl_recipeconfig_set_input(recipeconfig, "AMPL", "WAVECAL_TABLE", 1, 1);
  cpl_recipeconfig_set_output(recipeconfig, "AMPL", "MASTER_AMPL");
  cpl_recipeconfig_set_output(recipeconfig, "AMPL", "TABLE_AMPL");
  cpl_recipeconfig_set_output(recipeconfig, "AMPL", "AMPL_CONVOLVED");
    
  return recipeconfig;
} /* muse_ampl_new_recipeconfig() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief   Return a new header that shall be filled on output.
  @param   aFrametag   tag of the output frame
  @param   aHeader     the prepared FITS header
  @return  CPL_ERROR_NONE on success another cpl_error_code on error

  @remark This function is also used to generate the recipe documentation.
 */
/*----------------------------------------------------------------------------*/
static cpl_error_code
muse_ampl_prepare_header(const char *aFrametag, cpl_propertylist *aHeader)
{
  cpl_ensure_code(aFrametag, CPL_ERROR_NULL_INPUT);
  cpl_ensure_code(aHeader, CPL_ERROR_NULL_INPUT);
  if (!strcmp(aFrametag, "MASTER_AMPL")) {
    muse_processing_prepare_property(aHeader, "ESO QC AMPL INPUT[0-9]+ NSATURATED",
                                     CPL_TYPE_INT,
                                     "Number of saturated pixels in raw image i in input list");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL MASTER NSATURATED",
                                     CPL_TYPE_INT,
                                     "Number of saturated pixels in output master image");
  } else if (!strcmp(aFrametag, "TABLE_AMPL")) {
    muse_processing_prepare_property(aHeader, "ESO QC AMPL PHOTONS",
                                     CPL_TYPE_FLOAT,
                                     "[ph] Integrated number of photons detected on the CCD");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL POWER",
                                     CPL_TYPE_FLOAT,
                                     "[W] Integrated power detected on the CCD");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL THRU[0-9]+",
                                     CPL_TYPE_FLOAT,
                                     "[%] Channel throughput compared to photodiode a");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL THRU2ERR",
                                     CPL_TYPE_FLOAT,
                                     "[%] Estimated error of throughput compared to photodiode 2");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL SLICE[0-9]+ THRU2",
                                     CPL_TYPE_FLOAT,
                                     "[%] Slice j throughput compared to photodiode 2");
  } else if (!strcmp(aFrametag, "AMPL_CONVOLVED")) {
    muse_processing_prepare_property(aHeader, "ESO QC AMPL INPUT[0-9]+ NSATURATED",
                                     CPL_TYPE_INT,
                                     "Number of saturated pixels in raw image i in input list");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL MASTER NSATURATED",
                                     CPL_TYPE_INT,
                                     "Number of saturated pixels in output master image");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL PHOTONS",
                                     CPL_TYPE_FLOAT,
                                     "[ph] Integrated number of photons detected on the CCD");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL POWER",
                                     CPL_TYPE_FLOAT,
                                     "[W] Integrated power detected on the CCD");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL THRU[0-9]+",
                                     CPL_TYPE_FLOAT,
                                     "[%] Channel throughput compared to photodiode a");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL THRU2ERR",
                                     CPL_TYPE_FLOAT,
                                     "[%] Estimated error of throughput compared to photodiode 2");
    muse_processing_prepare_property(aHeader, "ESO QC AMPL SLICE[0-9]+ THRU2",
                                     CPL_TYPE_FLOAT,
                                     "[%] Slice j throughput compared to photodiode 2");
  } else {
    cpl_msg_warning(__func__, "Frame tag %s is not defined", aFrametag);
    return CPL_ERROR_ILLEGAL_INPUT;
  }
  return CPL_ERROR_NONE;
} /* muse_ampl_prepare_header() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief   Return the level of an output frame.
  @param   aFrametag   tag of the output frame
  @return  the cpl_frame_level or CPL_FRAME_LEVEL_NONE on error

  @remark This function is also used to generate the recipe documentation.
 */
/*----------------------------------------------------------------------------*/
static cpl_frame_level
muse_ampl_get_frame_level(const char *aFrametag)
{
  if (!aFrametag) {
    return CPL_FRAME_LEVEL_NONE;
  }
  if (!strcmp(aFrametag, "MASTER_AMPL")) {
    return CPL_FRAME_LEVEL_FINAL;
  }
  if (!strcmp(aFrametag, "TABLE_AMPL")) {
    return CPL_FRAME_LEVEL_FINAL;
  }
  if (!strcmp(aFrametag, "AMPL_CONVOLVED")) {
    return CPL_FRAME_LEVEL_FINAL;
  }
  return CPL_FRAME_LEVEL_NONE;
} /* muse_ampl_get_frame_level() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief   Return the mode of an output frame.
  @param   aFrametag   tag of the output frame
  @return  the muse_frame_mode

  @remark This function is also used to generate the recipe documentation.
 */
/*----------------------------------------------------------------------------*/
static muse_frame_mode
muse_ampl_get_frame_mode(const char *aFrametag)
{
  if (!aFrametag) {
    return MUSE_FRAME_MODE_ALL;
  }
  if (!strcmp(aFrametag, "MASTER_AMPL")) {
    return MUSE_FRAME_MODE_MASTER;
  }
  if (!strcmp(aFrametag, "TABLE_AMPL")) {
    return MUSE_FRAME_MODE_MASTER;
  }
  if (!strcmp(aFrametag, "AMPL_CONVOLVED")) {
    return MUSE_FRAME_MODE_MASTER;
  }
  return MUSE_FRAME_MODE_ALL;
} /* muse_ampl_get_frame_mode() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief   Setup the recipe options.
  @param   aPlugin   the plugin
  @return  0 if everything is ok, -1 if not called as part of a recipe.

  Define the command-line, configuration, and environment parameters for the
  recipe.
 */
/*----------------------------------------------------------------------------*/
static int
muse_ampl_create(cpl_plugin *aPlugin)
{
  /* Check that the plugin is part of a valid recipe */
  cpl_recipe *recipe;
  if (cpl_plugin_get_type(aPlugin) == CPL_PLUGIN_TYPE_RECIPE) {
    recipe = (cpl_recipe *)aPlugin;
  } else {
    return -1;
  }

  /* register the extended processing information (new FITS header creation, *
   * getting of the frame level for a certain tag)                           */
  muse_processinginfo_register(recipe,
                               muse_ampl_new_recipeconfig(),
                               muse_ampl_prepare_header,
                               muse_ampl_get_frame_level,
                               muse_ampl_get_frame_mode);

  /* XXX initialize timing in messages                                       *
   *     since at least esorex is too stupid to turn it on, we have to do it */
  if (muse_cplframework() == MUSE_CPLFRAMEWORK_ESOREX) {
    cpl_msg_set_time_on();
  }

  /* Create the parameter list in the cpl_recipe object */
  recipe->parameters = cpl_parameterlist_new();
  /* Fill the parameters list */
  cpl_parameter *p;
      
  /* --nifu: IFU to handle. If set to 0, all IFUs are processed serially. If set to -1, all IFUs are processed in parallel. */
  p = cpl_parameter_new_range("muse.muse_ampl.nifu",
                              CPL_TYPE_INT,
                             "IFU to handle. If set to 0, all IFUs are processed serially. If set to -1, all IFUs are processed in parallel.",
                              "muse.muse_ampl",
                              (int)0,
                              (int)-1,
                              (int)24);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "nifu");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "nifu");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --overscan: If this is "none", stop when detecting discrepant overscan levels (see ovscsigma), for "offset" it assumes that the mean overscan level represents the real offset in the bias levels of the exposures involved, and adjusts the data accordingly; for "vpoly", a polynomial is fit to the vertical overscan and subtracted from the whole quadrant. */
  p = cpl_parameter_new_value("muse.muse_ampl.overscan",
                              CPL_TYPE_STRING,
                             "If this is \"none\", stop when detecting discrepant overscan levels (see ovscsigma), for \"offset\" it assumes that the mean overscan level represents the real offset in the bias levels of the exposures involved, and adjusts the data accordingly; for \"vpoly\", a polynomial is fit to the vertical overscan and subtracted from the whole quadrant.",
                              "muse.muse_ampl",
                              (const char *)"vpoly");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "overscan");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "overscan");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --ovscreject: This influences how values are rejected when computing overscan statistics. Either no rejection at all ("none"), rejection using the DCR algorithm ("dcr"), or rejection using an iterative constant fit ("fit"). */
  p = cpl_parameter_new_value("muse.muse_ampl.ovscreject",
                              CPL_TYPE_STRING,
                             "This influences how values are rejected when computing overscan statistics. Either no rejection at all (\"none\"), rejection using the DCR algorithm (\"dcr\"), or rejection using an iterative constant fit (\"fit\").",
                              "muse.muse_ampl",
                              (const char *)"dcr");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "ovscreject");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "ovscreject");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --ovscsigma: If the deviation of mean overscan levels between a raw input image and the reference image is higher than |ovscsigma x stdev|, stop the processing. If overscan="vpoly", this is used as sigma rejection level for the iterative polynomial fit (the level comparison is then done afterwards with |100 x stdev| to guard against incompatible settings). Has no effect for overscan="offset". */
  p = cpl_parameter_new_value("muse.muse_ampl.ovscsigma",
                              CPL_TYPE_DOUBLE,
                             "If the deviation of mean overscan levels between a raw input image and the reference image is higher than |ovscsigma x stdev|, stop the processing. If overscan=\"vpoly\", this is used as sigma rejection level for the iterative polynomial fit (the level comparison is then done afterwards with |100 x stdev| to guard against incompatible settings). Has no effect for overscan=\"offset\".",
                              "muse.muse_ampl",
                              (double)30.);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "ovscsigma");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "ovscsigma");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --ovscignore: The number of pixels of the overscan adjacent to the data section of the CCD that are ignored when computing statistics or fits. */
  p = cpl_parameter_new_value("muse.muse_ampl.ovscignore",
                              CPL_TYPE_INT,
                             "The number of pixels of the overscan adjacent to the data section of the CCD that are ignored when computing statistics or fits.",
                              "muse.muse_ampl",
                              (int)3);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "ovscignore");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "ovscignore");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --combine: Type of combination to use */
  p = cpl_parameter_new_enum("muse.muse_ampl.combine",
                             CPL_TYPE_STRING,
                             "Type of combination to use",
                             "muse.muse_ampl",
                             (const char *)"sigclip",
                             4,
                             (const char *)"average",
                             (const char *)"median",
                             (const char *)"minmax",
                             (const char *)"sigclip");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "combine");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "combine");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --nlow: Number of minimum pixels to reject with minmax */
  p = cpl_parameter_new_value("muse.muse_ampl.nlow",
                              CPL_TYPE_INT,
                             "Number of minimum pixels to reject with minmax",
                              "muse.muse_ampl",
                              (int)1);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "nlow");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "nlow");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --nhigh: Number of maximum pixels to reject with minmax */
  p = cpl_parameter_new_value("muse.muse_ampl.nhigh",
                              CPL_TYPE_INT,
                             "Number of maximum pixels to reject with minmax",
                              "muse.muse_ampl",
                              (int)1);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "nhigh");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "nhigh");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --nkeep: Number of pixels to keep with minmax */
  p = cpl_parameter_new_value("muse.muse_ampl.nkeep",
                              CPL_TYPE_INT,
                             "Number of pixels to keep with minmax",
                              "muse.muse_ampl",
                              (int)1);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "nkeep");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "nkeep");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --lsigma: Low sigma for pixel rejection with sigclip */
  p = cpl_parameter_new_value("muse.muse_ampl.lsigma",
                              CPL_TYPE_DOUBLE,
                             "Low sigma for pixel rejection with sigclip",
                              "muse.muse_ampl",
                              (double)3);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "lsigma");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "lsigma");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --hsigma: High sigma for pixel rejection with sigclip */
  p = cpl_parameter_new_value("muse.muse_ampl.hsigma",
                              CPL_TYPE_DOUBLE,
                             "High sigma for pixel rejection with sigclip",
                              "muse.muse_ampl",
                              (double)3);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "hsigma");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "hsigma");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --fbeam: Factor to describe the widening of the beam from the focal plane to photo diode 2. */
  p = cpl_parameter_new_value("muse.muse_ampl.fbeam",
                              CPL_TYPE_DOUBLE,
                             "Factor to describe the widening of the beam from the focal plane to photo diode 2.",
                              "muse.muse_ampl",
                              (double)1.10);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "fbeam");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "fbeam");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --temp: Lamp temperature [K] used to create the black body function. */
  p = cpl_parameter_new_value("muse.muse_ampl.temp",
                              CPL_TYPE_DOUBLE,
                             "Lamp temperature [K] used to create the black body function.",
                              "muse.muse_ampl",
                              (double)3200.);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "temp");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "temp");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --savemaster: Save the processed and combined master image before any concolution is done. */
  p = cpl_parameter_new_value("muse.muse_ampl.savemaster",
                              CPL_TYPE_BOOL,
                             "Save the processed and combined master image before any concolution is done.",
                              "muse.muse_ampl",
                              (int)FALSE);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "savemaster");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "savemaster");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --savetable: Save the table with all the processed pixel values. */
  p = cpl_parameter_new_value("muse.muse_ampl.savetable",
                              CPL_TYPE_BOOL,
                             "Save the table with all the processed pixel values.",
                              "muse.muse_ampl",
                              (int)FALSE);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "savetable");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "savetable");

  cpl_parameterlist_append(recipe->parameters, p);
      
  /* --merge: Merge output products from different IFUs into a common file. */
  p = cpl_parameter_new_value("muse.muse_ampl.merge",
                              CPL_TYPE_BOOL,
                             "Merge output products from different IFUs into a common file.",
                              "muse.muse_ampl",
                              (int)FALSE);
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CFG, "merge");
  cpl_parameter_set_alias(p, CPL_PARAMETER_MODE_CLI, "merge");

  cpl_parameterlist_append(recipe->parameters, p);
    
  return 0;
} /* muse_ampl_create() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief   Fill the recipe parameters into the parameter structure
  @param   aParams       the recipe-internal structure to fill
  @param   aParameters   the cpl_parameterlist with the parameters
  @return  0 if everything is ok, -1 if something went wrong.

  This is a convienience function that centrally fills all parameters into the
  according fields of the recipe internal structure.
 */
/*----------------------------------------------------------------------------*/
static int
muse_ampl_params_fill(muse_ampl_params_t *aParams, cpl_parameterlist *aParameters)
{
  cpl_ensure_code(aParams, CPL_ERROR_NULL_INPUT);
  cpl_ensure_code(aParameters, CPL_ERROR_NULL_INPUT);
  cpl_parameter *p;
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.nifu");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->nifu = cpl_parameter_get_int(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.overscan");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->overscan = cpl_parameter_get_string(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.ovscreject");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->ovscreject = cpl_parameter_get_string(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.ovscsigma");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->ovscsigma = cpl_parameter_get_double(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.ovscignore");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->ovscignore = cpl_parameter_get_int(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.combine");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->combine_s = cpl_parameter_get_string(p);
  aParams->combine =
    (!strcasecmp(aParams->combine_s, "average")) ? MUSE_AMPL_PARAM_COMBINE_AVERAGE :
    (!strcasecmp(aParams->combine_s, "median")) ? MUSE_AMPL_PARAM_COMBINE_MEDIAN :
    (!strcasecmp(aParams->combine_s, "minmax")) ? MUSE_AMPL_PARAM_COMBINE_MINMAX :
    (!strcasecmp(aParams->combine_s, "sigclip")) ? MUSE_AMPL_PARAM_COMBINE_SIGCLIP :
      MUSE_AMPL_PARAM_COMBINE_INVALID_VALUE;
  cpl_ensure_code(aParams->combine != MUSE_AMPL_PARAM_COMBINE_INVALID_VALUE,
                  CPL_ERROR_ILLEGAL_INPUT);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.nlow");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->nlow = cpl_parameter_get_int(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.nhigh");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->nhigh = cpl_parameter_get_int(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.nkeep");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->nkeep = cpl_parameter_get_int(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.lsigma");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->lsigma = cpl_parameter_get_double(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.hsigma");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->hsigma = cpl_parameter_get_double(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.fbeam");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->fbeam = cpl_parameter_get_double(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.temp");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->temp = cpl_parameter_get_double(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.savemaster");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->savemaster = cpl_parameter_get_bool(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.savetable");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->savetable = cpl_parameter_get_bool(p);
      
  p = cpl_parameterlist_find(aParameters, "muse.muse_ampl.merge");
  cpl_ensure_code(p, CPL_ERROR_DATA_NOT_FOUND);
  aParams->merge = cpl_parameter_get_bool(p);
    
  return 0;
} /* muse_ampl_params_fill() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief    Execute the plugin instance given by the interface
  @param    aPlugin   the plugin
  @return   0 if everything is ok, -1 if not called as part of a recipe
 */
/*----------------------------------------------------------------------------*/
static int
muse_ampl_exec(cpl_plugin *aPlugin)
{
  if (cpl_plugin_get_type(aPlugin) != CPL_PLUGIN_TYPE_RECIPE) {
    return -1;
  }
  muse_processing_recipeinfo(aPlugin);
  cpl_recipe *recipe = (cpl_recipe *)aPlugin;
  cpl_msg_set_threadid_on();

  cpl_frameset *usedframes = cpl_frameset_new(),
               *outframes = cpl_frameset_new();
  muse_ampl_params_t params;
  muse_ampl_params_fill(&params, recipe->parameters);

  cpl_errorstate prestate = cpl_errorstate_get();

  if (params.nifu < -1 || params.nifu > kMuseNumIFUs) {
    cpl_msg_error(__func__, "Please specify a valid IFU number (between 1 and "
                  "%d), 0 (to process all IFUs consecutively), or -1 (to "
                  "process all IFUs in parallel) using --nifu.", kMuseNumIFUs);
    return -1;
  } /* if invalid params.nifu */

  cpl_boolean donotmerge = CPL_FALSE; /* depending on nifu we may not merge */
  int rc = 0;
  if (params.nifu > 0) {
    muse_processing *proc = muse_processing_new("muse_ampl",
                                                recipe);
    rc = muse_ampl_compute(proc, &params);
    cpl_frameset_join(usedframes, proc->usedframes);
    cpl_frameset_join(outframes, proc->outframes);
    muse_processing_delete(proc);
    donotmerge = CPL_TRUE; /* after processing one IFU, merging cannot work */
  } else if (params.nifu < 0) { /* parallel processing */
    int *rcs = cpl_calloc(kMuseNumIFUs, sizeof(int));
    int nifu;
    // FIXME: Removed default(none) clause here, to make the code work with
    //        gcc9 while keeping older versions of gcc working too without
    //        resorting to conditional compilation. Having default(none) here
    //        causes gcc9 to abort the build because of __func__ not being
    //        specified in a data sharing clause. Adding a data sharing clause
    //        makes older gcc versions choke.
    #pragma omp parallel for                                                   \
            shared(outframes, params, rcs, recipe, usedframes)
    for (nifu = 1; nifu <= kMuseNumIFUs; nifu++) {
      muse_processing *proc = muse_processing_new("muse_ampl",
                                                  recipe);
      muse_ampl_params_t *pars = cpl_malloc(sizeof(muse_ampl_params_t));
      memcpy(pars, &params, sizeof(muse_ampl_params_t));
      pars->nifu = nifu;
      int *rci = rcs + (nifu - 1);
      *rci = muse_ampl_compute(proc, pars);
      if (rci && (int)cpl_error_get_code() == MUSE_ERROR_CHIP_NOT_LIVE) {
        *rci = 0;
      }
      cpl_free(pars);
      #pragma omp critical(muse_processing_used_frames)
      cpl_frameset_join(usedframes, proc->usedframes);
      #pragma omp critical(muse_processing_output_frames)
      cpl_frameset_join(outframes, proc->outframes);
      muse_processing_delete(proc);
    } /* for nifu */
    /* non-parallel loop to propagate the "worst" return code;       *
     * since we only ever return -1, any non-zero code is propagated */
    for (nifu = 1; nifu <= kMuseNumIFUs; nifu++) {
      if (rcs[nifu-1] != 0) {
        rc = rcs[nifu-1];
      } /* if */
    } /* for nifu */
    cpl_free(rcs);
  } else { /* serial processing */
    for (params.nifu = 1; params.nifu <= kMuseNumIFUs && !rc; params.nifu++) {
      muse_processing *proc = muse_processing_new("muse_ampl",
                                                  recipe);
      rc = muse_ampl_compute(proc, &params);
      if (rc && (int)cpl_error_get_code() == MUSE_ERROR_CHIP_NOT_LIVE) {
        rc = 0;
      }
      cpl_frameset_join(usedframes, proc->usedframes);
      cpl_frameset_join(outframes, proc->outframes);
      muse_processing_delete(proc);
    } /* for nifu */
  } /* else */
  UNUSED_ARGUMENT(donotmerge); /* maybe this is not going to be used below */

  if (!cpl_errorstate_is_equal(prestate)) {
    /* dump all errors from this recipe in chronological order */
    cpl_errorstate_dump(prestate, CPL_FALSE, muse_cplerrorstate_dump_some);
    /* reset message level to not get the same errors displayed again by esorex */
    cpl_msg_set_level(CPL_MSG_INFO);
  }
  /* clean up duplicates in framesets of used and output frames */
  muse_cplframeset_erase_duplicate(usedframes);
  muse_cplframeset_erase_duplicate(outframes);

  /* merge output products from the up to 24 IFUs */
  if (params.merge && !donotmerge) {
    muse_utils_frameset_merge_frames(outframes, CPL_TRUE);
  }

  /* to get esorex to see our classification (frame groups etc.), *
   * replace the original frameset with the list of used frames   *
   * before appending product output frames                       */
  /* keep the same pointer, so just erase all frames, not delete the frameset */
  muse_cplframeset_erase_all(recipe->frames);
  cpl_frameset_join(recipe->frames, usedframes);
  cpl_frameset_join(recipe->frames, outframes);
  cpl_frameset_delete(usedframes);
  cpl_frameset_delete(outframes);
  return rc;
} /* muse_ampl_exec() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief    Destroy what has been created by the 'create' function
  @param    aPlugin   the plugin
  @return   0 if everything is ok, -1 if not called as part of a recipe
 */
/*----------------------------------------------------------------------------*/
static int
muse_ampl_destroy(cpl_plugin *aPlugin)
{
  /* Get the recipe from the plugin */
  cpl_recipe *recipe;
  if (cpl_plugin_get_type(aPlugin) == CPL_PLUGIN_TYPE_RECIPE) {
    recipe = (cpl_recipe *)aPlugin;
  } else {
    return -1;
  }

  /* Clean up */
  cpl_parameterlist_delete(recipe->parameters);
  muse_processinginfo_delete(recipe);
  return 0;
} /* muse_ampl_destroy() */

/*----------------------------------------------------------------------------*/
/**
  @private
  @brief    Add this recipe to the list of available plugins.
  @param    aList   the plugin list
  @return   0 if everything is ok, -1 otherwise (but this cannot happen)

  Create the recipe instance and make it available to the application using the
  interface. This function is exported.
 */
/*----------------------------------------------------------------------------*/
int
cpl_plugin_get_info(cpl_pluginlist *aList)
{
  cpl_recipe *recipe = cpl_calloc(1, sizeof *recipe);
  cpl_plugin *plugin = &recipe->interface;

  char *helptext;
  if (muse_cplframework() == MUSE_CPLFRAMEWORK_ESOREX) {
    helptext = cpl_sprintf("%s%s", muse_ampl_help,
                           muse_ampl_help_esorex);
  } else {
    helptext = cpl_sprintf("%s", muse_ampl_help);
  }

  /* Initialize the CPL plugin stuff for this module */
  cpl_plugin_init(plugin, CPL_PLUGIN_API, MUSE_BINARY_VERSION,
                  CPL_PLUGIN_TYPE_RECIPE,
                  "muse_ampl",
                  "Determine the instrumental throughput from exposures taken with the pico-amplifier / photo diode readings.",
                  helptext,
                  "Peter Weilbacher",
                  "usd-help@eso.org",
                  muse_get_license(),
                  muse_ampl_create,
                  muse_ampl_exec,
                  muse_ampl_destroy);
  cpl_pluginlist_append(aList, plugin);
  cpl_free(helptext);

  return 0;
} /* cpl_plugin_get_info() */

/**@}*/