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 namespace boost;
  36 using namespace std;
  37
  38 namespace pv {
  39 namespace prop {
  40 namespace binding {
  41
  42 DeviceOptions::DeviceOptions(struct sr_dev_inst *sdi) :
  43         _sdi(sdi)
  44 {
  45         GVariant *gvar_opts, *gvar_list;
  46         gsize num_opts;
  47
  48         if ((sr_config_list(sdi->driver, SR_CONF_DEVICE_OPTIONS,
  49                 &gvar_opts, sdi) != SR_OK))
  50                 /* Driver supports no device instance options. */
  51                 return;
  52
  53         const int *const options = (const int32_t *)g_variant_get_fixed_array(
  54                 gvar_opts, &num_opts, sizeof(int32_t));
  55         for (unsigned int i = 0; i < num_opts; i++) {
  56                 const struct sr_config_info *const info =
  57                         sr_config_info_get(options[i]);
  58
  59                 if (!info)
  60                         continue;
  61
  62                 const int key = info->key;
  63
  64                 if(sr_config_list(_sdi->driver, key, &gvar_list, _sdi) != SR_OK)
  65                         gvar_list = NULL;
  66
  67                 const QString name(info->name);
  68
  69                 switch(key)
  70                 {
  71                 case SR_CONF_SAMPLERATE:
  72                         bind_samplerate(name, gvar_list);
  73                         break;
  74
  75                 case SR_CONF_CAPTURE_RATIO:
  76                         bind_int(name, key, "%", pair<int64_t, int64_t>(0, 100));
  77                         break;
  78
  79                 case SR_CONF_PATTERN_MODE:
  80                 case SR_CONF_BUFFERSIZE:
  81                 case SR_CONF_TRIGGER_SOURCE:
  82                 case SR_CONF_FILTER:
  83                 case SR_CONF_COUPLING:
  84                         bind_enum(name, key, gvar_list);
  85                         break;
  86
  87                 case SR_CONF_RLE:
  88                         bind_bool(name, key);
  89                         break;
  90
  91                 case SR_CONF_TIMEBASE:
  92                         bind_enum(name, key, gvar_list, print_timebase);
  93                         break;
  94
  95                 case SR_CONF_VDIV:
  96                         bind_enum(name, key, gvar_list, print_vdiv);
  97                         break;
  98                 }
  99
 100                 if (gvar_list)
 101                         g_variant_unref(gvar_list);
 102         }
 103         g_variant_unref(gvar_opts);
 104 }
 105
 106 GVariant* DeviceOptions::config_getter(
 107         const struct sr_dev_inst *sdi, int key)
 108 {
 109         GVariant *data = NULL;
 110         if (sr_config_get(sdi->driver, key, &data, sdi) != SR_OK) {
 111                 qDebug() <<
 112                         "WARNING: Failed to get value of config id" << key;
 113                 return NULL;
 114         }
 115         return data;
 116 }
 117
 118 void DeviceOptions::config_setter(
 119         const struct sr_dev_inst *sdi, int key, GVariant* value)
 120 {
 121         if (sr_config_set(sdi, key, value) != SR_OK)
 122                 qDebug() << "WARNING: Failed to set value of sample rate";
 123 }
 124
 125 void DeviceOptions::bind_bool(const QString &name, int key)
 126 {
 127         _properties.push_back(shared_ptr<Property>(
 128                 new Bool(name, bind(config_getter, _sdi, key),
 129                         bind(config_setter, _sdi, key, _1))));
 130 }
 131
 132 void DeviceOptions::bind_enum(const QString &name, int key,
 133         GVariant *const gvar_list, function<QString (GVariant*)> printer)
 134 {
 135         GVariant *gvar;
 136         GVariantIter iter;
 137         vector< pair<GVariant*, QString> > values;
 138
 139         assert(gvar_list);
 140
 141         g_variant_iter_init (&iter, gvar_list);
 142         while ((gvar = g_variant_iter_next_value (&iter)))
 143                 values.push_back(make_pair(gvar, printer(gvar)));
 144
 145         _properties.push_back(shared_ptr<Property>(
 146                 new Enum(name, values,
 147                         bind(config_getter, _sdi, key),
 148                         bind(config_setter, _sdi, key, _1))));
 149 }
 150
 151 void DeviceOptions::bind_int(const QString &name, int key, QString suffix,
 152         optional< std::pair<int64_t, int64_t> > range)
 153 {
 154         _properties.push_back(shared_ptr<Property>(
 155                 new Int(name, suffix, range,
 156                         bind(config_getter, _sdi, key),
 157                         bind(config_setter, _sdi, key, _1))));
 158 }
 159
 160 QString DeviceOptions::print_gvariant(GVariant *const gvar)
 161 {
 162         QString s;
 163
 164         if (g_variant_is_of_type(gvar, G_VARIANT_TYPE("s")))
 165                 s = QString(g_variant_get_string(gvar, NULL));
 166         else
 167         {
 168                 gchar *const text = g_variant_print(gvar, FALSE);
 169                 s = QString(text);
 170                 g_free(text);
 171         }
 172
 173         return s;
 174 }
 175
 176 void DeviceOptions::bind_samplerate(const QString &name,
 177         GVariant *const gvar_list)
 178 {
 179         GVariant *gvar_list_samplerates;
 180
 181         assert(gvar_list);
 182
 183         if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 184                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 185         {
 186                 gsize num_elements;
 187                 const uint64_t *const elements =
 188                         (const uint64_t *)g_variant_get_fixed_array(
 189                                 gvar_list_samplerates, &num_elements, sizeof(uint64_t));
 190
 191                 assert(num_elements == 3);
 192
 193                 _properties.push_back(shared_ptr<Property>(
 194                         new Double(name, 0, QObject::tr("Hz"),
 195                                 make_pair((double)elements[0], (double)elements[1]),
 196                                                 (double)elements[2],
 197                                 bind(samplerate_double_getter, _sdi),
 198                                 bind(samplerate_double_setter, _sdi, _1))));
 199
 200                 g_variant_unref(gvar_list_samplerates);
 201         }
 202         else if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 203                         "samplerates", G_VARIANT_TYPE("at"))))
 204         {
 205                 bind_enum(name, SR_CONF_SAMPLERATE,
 206                         gvar_list_samplerates, print_samplerate);
 207                 g_variant_unref(gvar_list_samplerates);
 208         }
 209 }
 210
 211 QString DeviceOptions::print_samplerate(GVariant *const gvar)
 212 {
 213         char *const s = sr_samplerate_string(
 214                 g_variant_get_uint64(gvar));
 215         const QString qstring(s);
 216         g_free(s);
 217         return qstring;
 218 }
 219
 220 GVariant* DeviceOptions::samplerate_double_getter(
 221         const struct sr_dev_inst *sdi)
 222 {
 223         GVariant *const gvar = config_getter(sdi, SR_CONF_SAMPLERATE);
 224
 225         if(!gvar)
 226                 return NULL;
 227
 228         GVariant *const gvar_double = g_variant_new_double(
 229                 g_variant_get_uint64(gvar));
 230
 231         g_variant_unref(gvar);
 232
 233         return gvar_double;
 234 }
 235
 236 void DeviceOptions::samplerate_double_setter(
 237         struct sr_dev_inst *sdi, GVariant *value)
 238 {
 239         GVariant *const gvar = g_variant_new_uint64(
 240                 g_variant_get_double(value));
 241         config_setter(sdi, SR_CONF_SAMPLERATE, gvar);
 242 }
 243
 244 QString DeviceOptions::print_timebase(GVariant *const gvar)
 245 {
 246         uint64_t p, q;
 247         g_variant_get(gvar, "(tt)", &p, &q);
 248         return QString(sr_period_string(p * q));
 249 }
 250
 251 QString DeviceOptions::print_vdiv(GVariant *const gvar)
 252 {
 253         uint64_t p, q;
 254         g_variant_get(gvar, "(tt)", &p, &q);
 255         return QString(sr_voltage_string(p, q));
 256 }
 257
 258 } // binding
 259 } // prop
 260 } // pv
 261