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/double.h>
  31 #include <pv/prop/enum.h>
  32
  33 using namespace boost;
  34 using namespace std;
  35
  36 namespace pv {
  37 namespace prop {
  38 namespace binding {
  39
  40 DeviceOptions::DeviceOptions(struct sr_dev_inst *sdi) :
  41         _sdi(sdi)
  42 {
  43         GVariant *gvar_opts, *gvar_list;
  44         gsize num_opts;
  45
  46         if ((sr_config_list(sdi->driver, SR_CONF_DEVICE_OPTIONS,
  47                 &gvar_opts, sdi) != SR_OK))
  48                 /* Driver supports no device instance options. */
  49                 return;
  50
  51         const int *const options = (const int32_t *)g_variant_get_fixed_array(
  52                 gvar_opts, &num_opts, sizeof(int32_t));
  53         for (unsigned int i = 0; i < num_opts; i++) {
  54                 const struct sr_config_info *const info =
  55                         sr_config_info_get(options[i]);
  56
  57                 const int key = info->key;
  58
  59                 if (!info || sr_config_list(_sdi->driver, key,
  60                         &gvar_list, _sdi) != SR_OK)
  61                         continue;
  62
  63                 const QString name(info->name);
  64
  65                 switch(key)
  66                 {
  67                 case SR_CONF_SAMPLERATE:
  68                         bind_samplerate(name, gvar_list);
  69                         break;
  70
  71                 case SR_CONF_PATTERN_MODE:
  72                 case SR_CONF_BUFFERSIZE:
  73                 case SR_CONF_TRIGGER_SOURCE:
  74                 case SR_CONF_FILTER:
  75                 case SR_CONF_COUPLING:
  76                         bind_enum(name, key, gvar_list);
  77                         break;
  78
  79                 case SR_CONF_TIMEBASE:
  80                         bind_enum(name, key, gvar_list, print_timebase);
  81                         break;
  82
  83                 case SR_CONF_VDIV:
  84                         bind_enum(name, key, gvar_list, print_vdiv);
  85                         break;
  86                 }
  87
  88                 g_variant_unref(gvar_list);
  89         }
  90         g_variant_unref(gvar_opts);
  91 }
  92
  93 GVariant* DeviceOptions::config_getter(
  94         const struct sr_dev_inst *sdi, int key)
  95 {
  96         GVariant *data = NULL;
  97         if (sr_config_get(sdi->driver, key, &data, sdi) != SR_OK) {
  98                 qDebug() <<
  99                         "WARNING: Failed to get value of config id" << key;
 100                 return NULL;
 101         }
 102         return data;
 103 }
 104
 105 void DeviceOptions::config_setter(
 106         const struct sr_dev_inst *sdi, int key, GVariant* value)
 107 {
 108         if (sr_config_set(sdi, key, value) != SR_OK)
 109                 qDebug() << "WARNING: Failed to set value of sample rate";
 110 }
 111
 112 void DeviceOptions::bind_enum(const QString &name, int key,
 113         GVariant *const gvar_list, function<QString (GVariant*)> printer)
 114 {
 115         GVariant *gvar;
 116         GVariantIter iter;
 117         vector< pair<GVariant*, QString> > values;
 118
 119         g_variant_iter_init (&iter, gvar_list);
 120         while ((gvar = g_variant_iter_next_value (&iter)))
 121                 values.push_back(make_pair(gvar, printer(gvar)));
 122
 123         _properties.push_back(shared_ptr<Property>(
 124                 new Enum(name, values,
 125                         bind(config_getter, _sdi, key),
 126                         bind(config_setter, _sdi, key, _1))));
 127 }
 128
 129 QString DeviceOptions::print_gvariant(GVariant *const gvar)
 130 {
 131         QString s;
 132
 133         if (g_variant_is_of_type(gvar, G_VARIANT_TYPE("s")))
 134                 s = QString(g_variant_get_string(gvar, NULL));
 135         else
 136         {
 137                 gchar *const text = g_variant_print(gvar, FALSE);
 138                 s = QString(text);
 139                 g_free(text);
 140         }
 141
 142         return s;
 143 }
 144
 145 void DeviceOptions::bind_samplerate(const QString &name,
 146         GVariant *const gvar_list)
 147 {
 148         GVariant *gvar_list_samplerates;
 149
 150         if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 151                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 152         {
 153                 gsize num_elements;
 154                 const uint64_t *const elements =
 155                         (const uint64_t *)g_variant_get_fixed_array(
 156                                 gvar_list_samplerates, &num_elements, sizeof(uint64_t));
 157
 158                 assert(num_elements == 3);
 159
 160                 _properties.push_back(shared_ptr<Property>(
 161                         new Double(name, 0, QObject::tr("Hz"),
 162                                 make_pair((double)elements[0], (double)elements[1]),
 163                                                 (double)elements[2],
 164                                 bind(samplerate_double_getter, _sdi),
 165                                 bind(samplerate_double_setter, _sdi, _1))));
 166
 167                 g_variant_unref(gvar_list_samplerates);
 168         }
 169         else if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 170                         "samplerates", G_VARIANT_TYPE("at"))))
 171         {
 172                 bind_enum(name, SR_CONF_SAMPLERATE,
 173                         gvar_list_samplerates, print_samplerate);
 174                 g_variant_unref(gvar_list_samplerates);
 175         }
 176 }
 177
 178 QString DeviceOptions::print_samplerate(GVariant *const gvar)
 179 {
 180         char *const s = sr_samplerate_string(
 181                 g_variant_get_uint64(gvar));
 182         const QString qstring(s);
 183         g_free(s);
 184         return qstring;
 185 }
 186
 187 GVariant* DeviceOptions::samplerate_double_getter(
 188         const struct sr_dev_inst *sdi)
 189 {
 190         GVariant *const gvar = config_getter(sdi, SR_CONF_SAMPLERATE);
 191
 192         if(!gvar)
 193                 return NULL;
 194
 195         GVariant *const gvar_double = g_variant_new_double(
 196                 g_variant_get_uint64(gvar));
 197
 198         g_variant_unref(gvar);
 199
 200         return gvar_double;
 201 }
 202
 203 void DeviceOptions::samplerate_double_setter(
 204         struct sr_dev_inst *sdi, GVariant *value)
 205 {
 206         GVariant *const gvar = g_variant_new_uint64(
 207                 g_variant_get_double(value));
 208         config_setter(sdi, SR_CONF_SAMPLERATE, gvar);
 209 }
 210
 211 QString DeviceOptions::print_timebase(GVariant *const gvar)
 212 {
 213         uint64_t p, q;
 214         g_variant_get(gvar, "(tt)", &p, &q);
 215         return QString(sr_period_string(p * q));
 216 }
 217
 218 QString DeviceOptions::print_vdiv(GVariant *const gvar)
 219 {
 220         uint64_t p, q;
 221         g_variant_get(gvar, "(tt)", &p, &q);
 222         return QString(sr_voltage_string(p, q));
 223 }
 224
 225 } // binding
 226 } // prop
 227 } // pv
 228