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
  34 using namespace boost;
  35 using namespace std;
  36
  37 namespace pv {
  38 namespace prop {
  39 namespace binding {
  40
  41 DeviceOptions::DeviceOptions(struct sr_dev_inst *sdi) :
  42         _sdi(sdi)
  43 {
  44         GVariant *gvar_opts, *gvar_list;
  45         gsize num_opts;
  46
  47         if ((sr_config_list(sdi->driver, SR_CONF_DEVICE_OPTIONS,
  48                 &gvar_opts, sdi) != SR_OK))
  49                 /* Driver supports no device instance options. */
  50                 return;
  51
  52         const int *const options = (const int32_t *)g_variant_get_fixed_array(
  53                 gvar_opts, &num_opts, sizeof(int32_t));
  54         for (unsigned int i = 0; i < num_opts; i++) {
  55                 const struct sr_config_info *const info =
  56                         sr_config_info_get(options[i]);
  57
  58                 if (!info)
  59                         continue;
  60
  61                 const int key = info->key;
  62
  63                 if(sr_config_list(_sdi->driver, key, &gvar_list, _sdi) != SR_OK)
  64                         gvar_list = NULL;
  65
  66                 const QString name(info->name);
  67
  68                 switch(key)
  69                 {
  70                 case SR_CONF_SAMPLERATE:
  71                         bind_samplerate(name, gvar_list);
  72                         break;
  73
  74                 case SR_CONF_PATTERN_MODE:
  75                 case SR_CONF_BUFFERSIZE:
  76                 case SR_CONF_TRIGGER_SOURCE:
  77                 case SR_CONF_FILTER:
  78                 case SR_CONF_COUPLING:
  79                         bind_enum(name, key, gvar_list);
  80                         break;
  81
  82                 case SR_CONF_RLE:
  83                         bind_bool(name, key);
  84                         break;
  85
  86                 case SR_CONF_TIMEBASE:
  87                         bind_enum(name, key, gvar_list, print_timebase);
  88                         break;
  89
  90                 case SR_CONF_VDIV:
  91                         bind_enum(name, key, gvar_list, print_vdiv);
  92                         break;
  93                 }
  94
  95                 if (gvar_list)
  96                         g_variant_unref(gvar_list);
  97         }
  98         g_variant_unref(gvar_opts);
  99 }
 100
 101 GVariant* DeviceOptions::config_getter(
 102         const struct sr_dev_inst *sdi, int key)
 103 {
 104         GVariant *data = NULL;
 105         if (sr_config_get(sdi->driver, key, &data, sdi) != SR_OK) {
 106                 qDebug() <<
 107                         "WARNING: Failed to get value of config id" << key;
 108                 return NULL;
 109         }
 110         return data;
 111 }
 112
 113 void DeviceOptions::config_setter(
 114         const struct sr_dev_inst *sdi, int key, GVariant* value)
 115 {
 116         if (sr_config_set(sdi, key, value) != SR_OK)
 117                 qDebug() << "WARNING: Failed to set value of sample rate";
 118 }
 119
 120 void DeviceOptions::bind_bool(const QString &name, int key)
 121 {
 122         _properties.push_back(shared_ptr<Property>(
 123                 new Bool(name, bind(config_getter, _sdi, key),
 124                         bind(config_setter, _sdi, key, _1))));
 125 }
 126
 127 void DeviceOptions::bind_enum(const QString &name, int key,
 128         GVariant *const gvar_list, function<QString (GVariant*)> printer)
 129 {
 130         GVariant *gvar;
 131         GVariantIter iter;
 132         vector< pair<GVariant*, QString> > values;
 133
 134         assert(gvar_list);
 135
 136         g_variant_iter_init (&iter, gvar_list);
 137         while ((gvar = g_variant_iter_next_value (&iter)))
 138                 values.push_back(make_pair(gvar, printer(gvar)));
 139
 140         _properties.push_back(shared_ptr<Property>(
 141                 new Enum(name, values,
 142                         bind(config_getter, _sdi, key),
 143                         bind(config_setter, _sdi, key, _1))));
 144 }
 145
 146 QString DeviceOptions::print_gvariant(GVariant *const gvar)
 147 {
 148         QString s;
 149
 150         if (g_variant_is_of_type(gvar, G_VARIANT_TYPE("s")))
 151                 s = QString(g_variant_get_string(gvar, NULL));
 152         else
 153         {
 154                 gchar *const text = g_variant_print(gvar, FALSE);
 155                 s = QString(text);
 156                 g_free(text);
 157         }
 158
 159         return s;
 160 }
 161
 162 void DeviceOptions::bind_samplerate(const QString &name,
 163         GVariant *const gvar_list)
 164 {
 165         GVariant *gvar_list_samplerates;
 166
 167         assert(gvar_list);
 168
 169         if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 170                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 171         {
 172                 gsize num_elements;
 173                 const uint64_t *const elements =
 174                         (const uint64_t *)g_variant_get_fixed_array(
 175                                 gvar_list_samplerates, &num_elements, sizeof(uint64_t));
 176
 177                 assert(num_elements == 3);
 178
 179                 _properties.push_back(shared_ptr<Property>(
 180                         new Double(name, 0, QObject::tr("Hz"),
 181                                 make_pair((double)elements[0], (double)elements[1]),
 182                                                 (double)elements[2],
 183                                 bind(samplerate_double_getter, _sdi),
 184                                 bind(samplerate_double_setter, _sdi, _1))));
 185
 186                 g_variant_unref(gvar_list_samplerates);
 187         }
 188         else if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 189                         "samplerates", G_VARIANT_TYPE("at"))))
 190         {
 191                 bind_enum(name, SR_CONF_SAMPLERATE,
 192                         gvar_list_samplerates, print_samplerate);
 193                 g_variant_unref(gvar_list_samplerates);
 194         }
 195 }
 196
 197 QString DeviceOptions::print_samplerate(GVariant *const gvar)
 198 {
 199         char *const s = sr_samplerate_string(
 200                 g_variant_get_uint64(gvar));
 201         const QString qstring(s);
 202         g_free(s);
 203         return qstring;
 204 }
 205
 206 GVariant* DeviceOptions::samplerate_double_getter(
 207         const struct sr_dev_inst *sdi)
 208 {
 209         GVariant *const gvar = config_getter(sdi, SR_CONF_SAMPLERATE);
 210
 211         if(!gvar)
 212                 return NULL;
 213
 214         GVariant *const gvar_double = g_variant_new_double(
 215                 g_variant_get_uint64(gvar));
 216
 217         g_variant_unref(gvar);
 218
 219         return gvar_double;
 220 }
 221
 222 void DeviceOptions::samplerate_double_setter(
 223         struct sr_dev_inst *sdi, GVariant *value)
 224 {
 225         GVariant *const gvar = g_variant_new_uint64(
 226                 g_variant_get_double(value));
 227         config_setter(sdi, SR_CONF_SAMPLERATE, gvar);
 228 }
 229
 230 QString DeviceOptions::print_timebase(GVariant *const gvar)
 231 {
 232         uint64_t p, q;
 233         g_variant_get(gvar, "(tt)", &p, &q);
 234         return QString(sr_period_string(p * q));
 235 }
 236
 237 QString DeviceOptions::print_vdiv(GVariant *const gvar)
 238 {
 239         uint64_t p, q;
 240         g_variant_get(gvar, "(tt)", &p, &q);
 241         return QString(sr_voltage_string(p, q));
 242 }
 243
 244 } // binding
 245 } // prop
 246 } // pv
 247