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/int.h>
  32 #include <pv/prop/string.h>
  33
  34 using boost::bind;
  35 using boost::none;
  36 using boost::shared_ptr;
  37 using std::map;
  38 using std::string;
  39
  40 namespace pv {
  41 namespace prop {
  42 namespace binding {
  43
  44 DecoderOptions::DecoderOptions(
  45         shared_ptr<pv::data::DecoderStack> decoder_stack,
  46         shared_ptr<data::decode::Decoder> decoder) :
  47         _decoder_stack(decoder_stack),
  48         _decoder(decoder)
  49 {
  50         assert(_decoder);
  51
  52         const srd_decoder *const dec = _decoder->decoder();
  53         assert(dec);
  54
  55         for (GSList *l = dec->options; l; l = l->next)
  56         {
  57                 const srd_decoder_option *const opt =
  58                         (srd_decoder_option*)l->data;
  59
  60                 const QString name(opt->desc);
  61
  62                 const Property::Getter getter = bind(
  63                         &DecoderOptions::getter, this, opt->id);
  64                 const Property::Setter setter = bind(
  65                         &DecoderOptions::setter, this, opt->id, _1);
  66
  67                 shared_ptr<Property> prop;
  68
  69                 if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("x")))
  70                         prop = shared_ptr<Property>(
  71                                 new Int(name, "", none, getter, setter));
  72                 else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("s")))
  73                         prop = shared_ptr<Property>(
  74                                 new String(name, getter, setter));
  75                 else
  76                         continue;
  77
  78                 _properties.push_back(prop);
  79         }
  80 }
  81
  82 GVariant* DecoderOptions::getter(const char *id)
  83 {
  84         GVariant *val = NULL;
  85
  86         assert(_decoder);
  87
  88         // Get the value from the hash table if it is already present
  89         const map<string, GVariant*>& options = _decoder->options();
  90         map<string, GVariant*>::const_iterator iter = options.find(id);
  91
  92         if (iter != options.end())
  93                 val = (*iter).second;
  94         else
  95         {
  96                 assert(_decoder->decoder());
  97
  98                 // Get the default value if not
  99                 for (GSList *l = _decoder->decoder()->options; l; l = l->next)
 100                 {
 101                         const srd_decoder_option *const opt =
 102                                 (srd_decoder_option*)l->data;
 103                         if (strcmp(opt->id, id) == 0) {
 104                                 val = opt->def;
 105                                 break;
 106                         }
 107                 }
 108         }
 109
 110         if (val)
 111                 g_variant_ref(val);
 112
 113         return val;
 114 }
 115
 116 void DecoderOptions::setter(const char *id, GVariant *value)
 117 {
 118         assert(_decoder);
 119         _decoder->set_option(id, value);
 120
 121         assert(_decoder_stack);
 122         _decoder_stack->begin_decode();
 123 }
 124
 125 } // binding
 126 } // prop
 127 } // pv