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         const sr_probe_group *group) :
  50         _sdi(sdi),
  51         _group(group)
  52 {
  53         assert(sdi);
  54
  55         GVariant *gvar_opts, *gvar_list;
  56         gsize num_opts;
  57
  58         if ((sr_config_list(sdi->driver, sdi, group, SR_CONF_DEVICE_OPTIONS,
  59                 &gvar_opts) != SR_OK))
  60                 /* Driver supports no device instance options. */
  61                 return;
  62
  63         const int *const options = (const int32_t *)g_variant_get_fixed_array(
  64                 gvar_opts, &num_opts, sizeof(int32_t));
  65         for (unsigned int i = 0; i < num_opts; i++) {
  66                 const struct sr_config_info *const info =
  67                         sr_config_info_get(options[i]);
  68
  69                 if (!info)
  70                         continue;
  71
  72                 const int key = info->key;
  73
  74                 if (sr_config_list(_sdi->driver, _sdi, group,
  75                         key, &gvar_list) != SR_OK)
  76                         gvar_list = NULL;
  77
  78                 const QString name = QString::fromUtf8(info->name);
  79
  80                 switch(key)
  81                 {
  82                 case SR_CONF_SAMPLERATE:
  83                         // Sample rate values are not bound because they are shown
  84                         // in the SamplingBar
  85                         break;
  86
  87                 case SR_CONF_CAPTURE_RATIO:
  88                         bind_int(name, key, "%", pair<int64_t, int64_t>(0, 100));
  89                         break;
  90
  91                 case SR_CONF_PATTERN_MODE:
  92                 case SR_CONF_BUFFERSIZE:
  93                 case SR_CONF_TRIGGER_SOURCE:
  94                 case SR_CONF_FILTER:
  95                 case SR_CONF_COUPLING:
  96                         bind_enum(name, key, gvar_list);
  97                         break;
  98
  99                 case SR_CONF_RLE:
 100                         bind_bool(name, key);
 101                         break;
 102
 103                 case SR_CONF_TIMEBASE:
 104                         bind_enum(name, key, gvar_list, print_timebase);
 105                         break;
 106
 107                 case SR_CONF_VDIV:
 108                         bind_enum(name, key, gvar_list, print_vdiv);
 109                         break;
 110
 111                 case SR_CONF_VOLTAGE_THRESHOLD:
 112                         bind_enum(name, key, gvar_list, print_voltage_threshold);
 113                         break;
 114                 }
 115
 116                 if (gvar_list)
 117                         g_variant_unref(gvar_list);
 118         }
 119         g_variant_unref(gvar_opts);
 120 }
 121
 122 GVariant* DeviceOptions::config_getter(
 123         const sr_dev_inst *sdi, const sr_probe_group *group, int key)
 124 {
 125         GVariant *data = NULL;
 126         if (sr_config_get(sdi->driver, sdi, group, key, &data) != SR_OK) {
 127                 qDebug() <<
 128                         "WARNING: Failed to get value of config id" << key;
 129                 return NULL;
 130         }
 131         return data;
 132 }
 133
 134 void DeviceOptions::config_setter(
 135         const struct sr_dev_inst *sdi, const sr_probe_group *group, int key,
 136         GVariant* value)
 137 {
 138         if (sr_config_set(sdi, group, key, value) != SR_OK)
 139                 qDebug() << "WARNING: Failed to set value of sample rate";
 140 }
 141
 142 void DeviceOptions::bind_bool(const QString &name, int key)
 143 {
 144         _properties.push_back(shared_ptr<Property>(
 145                 new Bool(name, bind(config_getter, _sdi, _group, key),
 146                         bind(config_setter, _sdi, _group, key, _1))));
 147 }
 148
 149 void DeviceOptions::bind_enum(const QString &name, int key,
 150         GVariant *const gvar_list, function<QString (GVariant*)> printer)
 151 {
 152         GVariant *gvar;
 153         GVariantIter iter;
 154         vector< pair<GVariant*, QString> > values;
 155
 156         assert(gvar_list);
 157
 158         g_variant_iter_init (&iter, gvar_list);
 159         while ((gvar = g_variant_iter_next_value (&iter)))
 160                 values.push_back(make_pair(gvar, printer(gvar)));
 161
 162         _properties.push_back(shared_ptr<Property>(
 163                 new Enum(name, values,
 164                         bind(config_getter, _sdi, _group, key),
 165                         bind(config_setter, _sdi, _group, key, _1))));
 166 }
 167
 168 void DeviceOptions::bind_int(const QString &name, int key, QString suffix,
 169         optional< std::pair<int64_t, int64_t> > range)
 170 {
 171         _properties.push_back(shared_ptr<Property>(
 172                 new Int(name, suffix, range,
 173                         bind(config_getter, _sdi, _group, key),
 174                         bind(config_setter, _sdi, _group, key, _1))));
 175 }
 176
 177 QString DeviceOptions::print_gvariant(GVariant *const gvar)
 178 {
 179         QString s;
 180
 181         if (g_variant_is_of_type(gvar, G_VARIANT_TYPE("s")))
 182                 s = QString::fromUtf8(g_variant_get_string(gvar, NULL));
 183         else
 184         {
 185                 gchar *const text = g_variant_print(gvar, FALSE);
 186                 s = QString::fromUtf8(text);
 187                 g_free(text);
 188         }
 189
 190         return s;
 191 }
 192
 193 QString DeviceOptions::print_timebase(GVariant *const gvar)
 194 {
 195         uint64_t p, q;
 196         g_variant_get(gvar, "(tt)", &p, &q);
 197         return QString::fromUtf8(sr_period_string(p * q));
 198 }
 199
 200 QString DeviceOptions::print_vdiv(GVariant *const gvar)
 201 {
 202         uint64_t p, q;
 203         g_variant_get(gvar, "(tt)", &p, &q);
 204         return QString::fromUtf8(sr_voltage_string(p, q));
 205 }
 206
 207 QString DeviceOptions::print_voltage_threshold(GVariant *const gvar)
 208 {
 209         gdouble lo, hi;
 210         char buf[64];
 211         g_variant_get(gvar, "(dd)", &lo, &hi);
 212         snprintf(buf, sizeof(buf), "L<%.1fV H>%.1fV", lo, hi);
 213         return QString::fromUtf8(buf);
 214 }
 215
 216 } // binding
 217 } // prop
 218 } // pv
 219