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         assert(sdi);
  46
  47         GVariant *gvar_opts, *gvar_list;
  48         gsize num_opts;
  49
  50         if ((sr_config_list(sdi->driver, sdi, NULL, SR_CONF_DEVICE_OPTIONS,
  51                 &gvar_opts) != SR_OK))
  52                 /* Driver supports no device instance options. */
  53                 return;
  54
  55         const int *const options = (const int32_t *)g_variant_get_fixed_array(
  56                 gvar_opts, &num_opts, sizeof(int32_t));
  57         for (unsigned int i = 0; i < num_opts; i++) {
  58                 const struct sr_config_info *const info =
  59                         sr_config_info_get(options[i]);
  60
  61                 if (!info)
  62                         continue;
  63
  64                 const int key = info->key;
  65
  66                 if (sr_config_list(_sdi->driver, _sdi, NULL, key, &gvar_list) != SR_OK)
  67                         gvar_list = NULL;
  68
  69                 const QString name(info->name);
  70
  71                 switch(key)
  72                 {
  73                 case SR_CONF_SAMPLERATE:
  74                         bind_samplerate(name, gvar_list);
  75                         break;
  76
  77                 case SR_CONF_CAPTURE_RATIO:
  78                         bind_int(name, key, "%", pair<int64_t, int64_t>(0, 100));
  79                         break;
  80
  81                 case SR_CONF_PATTERN_MODE:
  82                 case SR_CONF_BUFFERSIZE:
  83                 case SR_CONF_TRIGGER_SOURCE:
  84                 case SR_CONF_FILTER:
  85                 case SR_CONF_COUPLING:
  86                         bind_enum(name, key, gvar_list);
  87                         break;
  88
  89                 case SR_CONF_RLE:
  90                         bind_bool(name, key);
  91                         break;
  92
  93                 case SR_CONF_TIMEBASE:
  94                         bind_enum(name, key, gvar_list, print_timebase);
  95                         break;
  96
  97                 case SR_CONF_VDIV:
  98                         bind_enum(name, key, gvar_list, print_vdiv);
  99                         break;
 100
 101                 case SR_CONF_VOLTAGE_THRESHOLD:
 102                         bind_enum(name, key, gvar_list, print_voltage_threshold);
 103                         break;
 104                 }
 105
 106                 if (gvar_list)
 107                         g_variant_unref(gvar_list);
 108         }
 109         g_variant_unref(gvar_opts);
 110 }
 111
 112 GVariant* DeviceOptions::config_getter(
 113         const struct sr_dev_inst *sdi, int key)
 114 {
 115         GVariant *data = NULL;
 116         if (sr_config_get(sdi->driver, sdi, NULL, key, &data) != SR_OK) {
 117                 qDebug() <<
 118                         "WARNING: Failed to get value of config id" << key;
 119                 return NULL;
 120         }
 121         return data;
 122 }
 123
 124 void DeviceOptions::config_setter(
 125         const struct sr_dev_inst *sdi, int key, GVariant* value)
 126 {
 127         if (sr_config_set(sdi, NULL, key, value) != SR_OK)
 128                 qDebug() << "WARNING: Failed to set value of sample rate";
 129 }
 130
 131 void DeviceOptions::bind_bool(const QString &name, int key)
 132 {
 133         _properties.push_back(shared_ptr<Property>(
 134                 new Bool(name, bind(config_getter, _sdi, key),
 135                         bind(config_setter, _sdi, key, _1))));
 136 }
 137
 138 void DeviceOptions::bind_enum(const QString &name, int key,
 139         GVariant *const gvar_list, function<QString (GVariant*)> printer)
 140 {
 141         GVariant *gvar;
 142         GVariantIter iter;
 143         vector< pair<GVariant*, QString> > values;
 144
 145         assert(gvar_list);
 146
 147         g_variant_iter_init (&iter, gvar_list);
 148         while ((gvar = g_variant_iter_next_value (&iter)))
 149                 values.push_back(make_pair(gvar, printer(gvar)));
 150
 151         _properties.push_back(shared_ptr<Property>(
 152                 new Enum(name, values,
 153                         bind(config_getter, _sdi, key),
 154                         bind(config_setter, _sdi, key, _1))));
 155 }
 156
 157 void DeviceOptions::bind_int(const QString &name, int key, QString suffix,
 158         optional< std::pair<int64_t, int64_t> > range)
 159 {
 160         _properties.push_back(shared_ptr<Property>(
 161                 new Int(name, suffix, range,
 162                         bind(config_getter, _sdi, key),
 163                         bind(config_setter, _sdi, key, _1))));
 164 }
 165
 166 QString DeviceOptions::print_gvariant(GVariant *const gvar)
 167 {
 168         QString s;
 169
 170         if (g_variant_is_of_type(gvar, G_VARIANT_TYPE("s")))
 171                 s = QString(g_variant_get_string(gvar, NULL));
 172         else
 173         {
 174                 gchar *const text = g_variant_print(gvar, FALSE);
 175                 s = QString(text);
 176                 g_free(text);
 177         }
 178
 179         return s;
 180 }
 181
 182 void DeviceOptions::bind_samplerate(const QString &name,
 183         GVariant *const gvar_list)
 184 {
 185         GVariant *gvar_list_samplerates;
 186
 187         assert(gvar_list);
 188
 189         if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 190                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 191         {
 192                 gsize num_elements;
 193                 const uint64_t *const elements =
 194                         (const uint64_t *)g_variant_get_fixed_array(
 195                                 gvar_list_samplerates, &num_elements, sizeof(uint64_t));
 196
 197                 assert(num_elements == 3);
 198
 199                 _properties.push_back(shared_ptr<Property>(
 200                         new Double(name, 0, QObject::tr("Hz"),
 201                                 make_pair((double)elements[0], (double)elements[1]),
 202                                                 (double)elements[2],
 203                                 bind(samplerate_double_getter, _sdi),
 204                                 bind(samplerate_double_setter, _sdi, _1))));
 205
 206                 g_variant_unref(gvar_list_samplerates);
 207         }
 208         else if ((gvar_list_samplerates = g_variant_lookup_value(gvar_list,
 209                         "samplerates", G_VARIANT_TYPE("at"))))
 210         {
 211                 bind_enum(name, SR_CONF_SAMPLERATE,
 212                         gvar_list_samplerates, print_samplerate);
 213                 g_variant_unref(gvar_list_samplerates);
 214         }
 215 }
 216
 217 QString DeviceOptions::print_samplerate(GVariant *const gvar)
 218 {
 219         char *const s = sr_samplerate_string(
 220                 g_variant_get_uint64(gvar));
 221         const QString qstring(s);
 222         g_free(s);
 223         return qstring;
 224 }
 225
 226 GVariant* DeviceOptions::samplerate_double_getter(
 227         const struct sr_dev_inst *sdi)
 228 {
 229         GVariant *const gvar = config_getter(sdi, SR_CONF_SAMPLERATE);
 230
 231         if(!gvar)
 232                 return NULL;
 233
 234         GVariant *const gvar_double = g_variant_new_double(
 235                 g_variant_get_uint64(gvar));
 236
 237         g_variant_unref(gvar);
 238
 239         return gvar_double;
 240 }
 241
 242 void DeviceOptions::samplerate_double_setter(
 243         struct sr_dev_inst *sdi, GVariant *value)
 244 {
 245         GVariant *const gvar = g_variant_new_uint64(
 246                 g_variant_get_double(value));
 247         config_setter(sdi, SR_CONF_SAMPLERATE, gvar);
 248 }
 249
 250 QString DeviceOptions::print_timebase(GVariant *const gvar)
 251 {
 252         uint64_t p, q;
 253         g_variant_get(gvar, "(tt)", &p, &q);
 254         return QString(sr_period_string(p * q));
 255 }
 256
 257 QString DeviceOptions::print_vdiv(GVariant *const gvar)
 258 {
 259         uint64_t p, q;
 260         g_variant_get(gvar, "(tt)", &p, &q);
 261         return QString(sr_voltage_string(p, q));
 262 }
 263
 264 QString DeviceOptions::print_voltage_threshold(GVariant *const gvar)
 265 {
 266         gdouble lo, hi;
 267         char buf[64];
 268         g_variant_get(gvar, "(dd)", &lo, &hi);
 269         snprintf(buf, sizeof(buf), "L<%.1fV H>%.1fV", lo, hi);
 270         return QString(buf);
 271 }
 272
 273 } // binding
 274 } // prop
 275 } // pv
 276