pv/prop/binding/decoderoptions.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2013 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 <libsigrokdecode/libsigrokdecode.h>
  22
  23 #include "decoderoptions.h"
  24
  25 #include <boost/bind.hpp>
  26 #include <boost/foreach.hpp>
  27 #include <boost/none_t.hpp>
  28
  29 #include <pv/data/decoderstack.h>
  30 #include <pv/data/decode/decoder.h>
  31 #include <pv/prop/double.h>
  32 #include <pv/prop/enum.h>
  33 #include <pv/prop/int.h>
  34 #include <pv/prop/string.h>
  35
  36 using boost::bind;
  37 using boost::none;
  38 using boost::shared_ptr;
  39 using std::make_pair;
  40 using std::map;
  41 using std::pair;
  42 using std::string;
  43 using std::vector;
  44
  45 namespace pv {
  46 namespace prop {
  47 namespace binding {
  48
  49 DecoderOptions::DecoderOptions(
  50         shared_ptr<pv::data::DecoderStack> decoder_stack,
  51         shared_ptr<data::decode::Decoder> decoder) :
  52         _decoder_stack(decoder_stack),
  53         _decoder(decoder)
  54 {
  55         assert(_decoder);
  56
  57         const srd_decoder *const dec = _decoder->decoder();
  58         assert(dec);
  59
  60         for (GSList *l = dec->options; l; l = l->next)
  61         {
  62                 const srd_decoder_option *const opt =
  63                         (srd_decoder_option*)l->data;
  64
  65                 const QString name = QString::fromUtf8(opt->desc);
  66
  67                 const Property::Getter getter = bind(
  68                         &DecoderOptions::getter, this, opt->id);
  69                 const Property::Setter setter = bind(
  70                         &DecoderOptions::setter, this, opt->id, _1);
  71
  72                 shared_ptr<Property> prop;
  73
  74                 if (opt->values)
  75                         prop = bind_enum(name, opt, getter, setter);
  76                 else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("d")))
  77                         prop = shared_ptr<Property>(new Double(name, 2, "",
  78                                 none, none, getter, setter));
  79                 else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("x")))
  80                         prop = shared_ptr<Property>(
  81                                 new Int(name, "", none, getter, setter));
  82                 else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("s")))
  83                         prop = shared_ptr<Property>(
  84                                 new String(name, getter, setter));
  85                 else
  86                         continue;
  87
  88                 _properties.push_back(prop);
  89         }
  90 }
  91
  92 shared_ptr<Property> DecoderOptions::bind_enum(
  93         const QString &name, const srd_decoder_option *option,
  94         Property::Getter getter, Property::Setter setter)
  95 {
  96         vector< pair<GVariant*, QString> > values;
  97         for (GSList *l = option->values; l; l = l->next) {
  98                 GVariant *const var = (GVariant*)l->data;
  99                 assert(var);
 100                 values.push_back(make_pair(var, print_gvariant(var)));
 101         }
 102
 103         return shared_ptr<Property>(new Enum(name, values, getter, setter));
 104 }
 105
 106 GVariant* DecoderOptions::getter(const char *id)
 107 {
 108         GVariant *val = NULL;
 109
 110         assert(_decoder);
 111
 112         // Get the value from the hash table if it is already present
 113         const map<string, GVariant*>& options = _decoder->options();
 114         map<string, GVariant*>::const_iterator iter = options.find(id);
 115
 116         if (iter != options.end())
 117                 val = (*iter).second;
 118         else
 119         {
 120                 assert(_decoder->decoder());
 121
 122                 // Get the default value if not
 123                 for (GSList *l = _decoder->decoder()->options; l; l = l->next)
 124                 {
 125                         const srd_decoder_option *const opt =
 126                                 (srd_decoder_option*)l->data;
 127                         if (strcmp(opt->id, id) == 0) {
 128                                 val = opt->def;
 129                                 break;
 130                         }
 131                 }
 132         }
 133
 134         if (val)
 135                 g_variant_ref(val);
 136
 137         return val;
 138 }
 139
 140 void DecoderOptions::setter(const char *id, GVariant *value)
 141 {
 142         assert(_decoder);
 143         _decoder->set_option(id, value);
 144
 145         assert(_decoder_stack);
 146         _decoder_stack->begin_decode();
 147 }
 148
 149 } // binding
 150 } // prop
 151 } // pv