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