pv/prop/binding/deviceoptions.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <boost/bind.hpp>
  22
  23 #include <QDebug>
  24 #include <QObject>
  25
  26 #include <stdint.h>
  27
  28 #include "deviceoptions.h"
  29
  30 #include <pv/prop/bool.h>
  31 #include <pv/prop/double.h>
  32 #include <pv/prop/enum.h>
  33 #include <pv/prop/int.h>
  34
  35 using boost::bind;
  36 using boost::function;
  37 using boost::optional;
  38 using boost::shared_ptr;
  39 using std::make_pair;
  40 using std::pair;
  41 using std::string;
  42 using std::vector;
  43
  44 namespace pv {
  45 namespace prop {
  46 namespace binding {
  47
  48 DeviceOptions::DeviceOptions(const sr_dev_inst *sdi) :
  49         _sdi(sdi)
  50 {
  51         assert(sdi);
  52
  53         GVariant *gvar_opts, *gvar_list;
  54         gsize num_opts;
  55
  56         if ((sr_config_list(sdi->driver, sdi, NULL, SR_CONF_DEVICE_OPTIONS,
  57                 &gvar_opts) != SR_OK))
  58                 /* Driver supports no device instance options. */
  59                 return;
  60
  61         const int *const options = (const int32_t *)g_variant_get_fixed_array(
  62                 gvar_opts, &num_opts, sizeof(int32_t));
  63         for (unsigned int i = 0; i < num_opts; i++) {
  64                 const struct sr_config_info *const info =
  65                         sr_config_info_get(options[i]);
  66
  67                 if (!info)
  68                         continue;
  69
  70                 const int key = info->key;
  71
  72                 if (sr_config_list(_sdi->driver, _sdi, NULL, key, &gvar_list) != SR_OK)
  73                         gvar_list = NULL;
  74
  75                 const QString name = QString::fromUtf8(info->name);
  76
  77                 switch(key)
  78                 {
  79                 case SR_CONF_SAMPLERATE:
  80                         // Sample rate values are not bound because they are shown
  81                         // in the SamplingBar
  82                         break;
  83
  84                 case SR_CONF_CAPTURE_RATIO:
  85                         bind_int(name, key, "%", pair<int64_t, int64_t>(0, 100));
  86                         break;
  87
  88                 case SR_CONF_PATTERN_MODE:
  89                 case SR_CONF_BUFFERSIZE:
  90                 case SR_CONF_TRIGGER_SOURCE:
  91                 case SR_CONF_FILTER:
  92                 case SR_CONF_COUPLING:
  93                         bind_enum(name, key, gvar_list);
  94                         break;
  95
  96                 case SR_CONF_RLE:
  97                         bind_bool(name, key);
  98                         break;
  99
 100                 case SR_CONF_TIMEBASE:
 101                         bind_enum(name, key, gvar_list, print_timebase);
 102                         break;
 103
 104                 case SR_CONF_VDIV:
 105                         bind_enum(name, key, gvar_list, print_vdiv);
 106                         break;
 107
 108                 case SR_CONF_VOLTAGE_THRESHOLD:
 109                         bind_enum(name, key, gvar_list, print_voltage_threshold);
 110                         break;
 111                 }
 112
 113                 if (gvar_list)
 114                         g_variant_unref(gvar_list);
 115         }
 116         g_variant_unref(gvar_opts);
 117 }
 118
 119 GVariant* DeviceOptions::config_getter(
 120         const struct sr_dev_inst *sdi, int key)
 121 {
 122         GVariant *data = NULL;
 123         if (sr_config_get(sdi->driver, sdi, NULL, key, &data) != SR_OK) {
 124                 qDebug() <<
 125                         "WARNING: Failed to get value of config id" << key;
 126                 return NULL;
 127         }
 128         return data;
 129 }
 130
 131 void DeviceOptions::config_setter(
 132         const struct sr_dev_inst *sdi, int key, GVariant* value)
 133 {
 134         if (sr_config_set(sdi, NULL, key, value) != SR_OK)
 135                 qDebug() << "WARNING: Failed to set value of sample rate";
 136 }
 137
 138 void DeviceOptions::bind_bool(const QString &name, int key)
 139 {
 140         _properties.push_back(shared_ptr<Property>(
 141                 new Bool(name, bind(config_getter, _sdi, key),
 142                         bind(config_setter, _sdi, key, _1))));
 143 }
 144
 145 void DeviceOptions::bind_enum(const QString &name, int key,
 146         GVariant *const gvar_list, function<QString (GVariant*)> printer)
 147 {
 148         GVariant *gvar;
 149         GVariantIter iter;
 150         vector< pair<GVariant*, QString> > values;
 151
 152         assert(gvar_list);
 153
 154         g_variant_iter_init (&iter, gvar_list);
 155         while ((gvar = g_variant_iter_next_value (&iter)))
 156                 values.push_back(make_pair(gvar, printer(gvar)));
 157
 158         _properties.push_back(shared_ptr<Property>(
 159                 new Enum(name, values,
 160                         bind(config_getter, _sdi, key),
 161                         bind(config_setter, _sdi, key, _1))));
 162 }
 163
 164 void DeviceOptions::bind_int(const QString &name, int key, QString suffix,
 165         optional< std::pair<int64_t, int64_t> > range)
 166 {
 167         _properties.push_back(shared_ptr<Property>(
 168                 new Int(name, suffix, range,
 169                         bind(config_getter, _sdi, key),
 170                         bind(config_setter, _sdi, key, _1))));
 171 }
 172
 173 QString DeviceOptions::print_gvariant(GVariant *const gvar)
 174 {
 175         QString s;
 176
 177         if (g_variant_is_of_type(gvar, G_VARIANT_TYPE("s")))
 178                 s = QString::fromUtf8(g_variant_get_string(gvar, NULL));
 179         else
 180         {
 181                 gchar *const text = g_variant_print(gvar, FALSE);
 182                 s = QString::fromUtf8(text);
 183                 g_free(text);
 184         }
 185
 186         return s;
 187 }
 188
 189 QString DeviceOptions::print_timebase(GVariant *const gvar)
 190 {
 191         uint64_t p, q;
 192         g_variant_get(gvar, "(tt)", &p, &q);
 193         return QString::fromUtf8(sr_period_string(p * q));
 194 }
 195
 196 QString DeviceOptions::print_vdiv(GVariant *const gvar)
 197 {
 198         uint64_t p, q;
 199         g_variant_get(gvar, "(tt)", &p, &q);
 200         return QString::fromUtf8(sr_voltage_string(p, q));
 201 }
 202
 203 QString DeviceOptions::print_voltage_threshold(GVariant *const gvar)
 204 {
 205         gdouble lo, hi;
 206         char buf[64];
 207         g_variant_get(gvar, "(dd)", &lo, &hi);
 208         snprintf(buf, sizeof(buf), "L<%.1fV H>%.1fV", lo, hi);
 209         return QString::fromUtf8(buf);
 210 }
 211
 212 } // binding
 213 } // prop
 214 } // pv
 215