pv/data/decode/decoder.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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <cassert>
  21
  22 #include <libsigrokcxx/libsigrokcxx.hpp>
  23 #include <libsigrokdecode/libsigrokdecode.h>
  24
  25 #include "decoder.hpp"
  26
  27 #include <pv/data/signalbase.hpp>
  28
  29 using std::set;
  30 using std::map;
  31 using std::shared_ptr;
  32 using std::string;
  33
  34 namespace pv {
  35 namespace data {
  36 namespace decode {
  37
  38 Decoder::Decoder(const srd_decoder *const dec) :
  39         decoder_(dec),
  40         shown_(true),
  41         initial_pins_(nullptr)
  42 {
  43 }
  44
  45 Decoder::~Decoder()
  46 {
  47         for (auto& option : options_)
  48                 g_variant_unref(option.second);
  49 }
  50
  51 const srd_decoder* Decoder::decoder() const
  52 {
  53         return decoder_;
  54 }
  55
  56 bool Decoder::shown() const
  57 {
  58         return shown_;
  59 }
  60
  61 void Decoder::show(bool show)
  62 {
  63         shown_ = show;
  64 }
  65
  66 const map<const srd_channel*, shared_ptr<data::SignalBase> >&
  67 Decoder::channels() const
  68 {
  69         return channels_;
  70 }
  71
  72 void Decoder::set_channels(map<const srd_channel*,
  73         shared_ptr<data::SignalBase> > channels)
  74 {
  75         channels_ = channels;
  76 }
  77
  78 void Decoder::set_initial_pins(GArray *initial_pins)
  79 {
  80         if (initial_pins_)
  81                 g_array_free(initial_pins_, TRUE);
  82         initial_pins_ = initial_pins;
  83 }
  84
  85 GArray *Decoder::initial_pins() const
  86 {
  87         return initial_pins_;
  88 }
  89
  90 const map<string, GVariant*>& Decoder::options() const
  91 {
  92         return options_;
  93 }
  94
  95 void Decoder::set_option(const char *id, GVariant *value)
  96 {
  97         assert(value);
  98         g_variant_ref(value);
  99         options_[id] = value;
 100 }
 101
 102 bool Decoder::have_required_channels() const
 103 {
 104         for (GSList *l = decoder_->channels; l; l = l->next) {
 105                 const srd_channel *const pdch = (const srd_channel*)l->data;
 106                 assert(pdch);
 107                 if (channels_.find(pdch) == channels_.end())
 108                         return false;
 109         }
 110
 111         return true;
 112 }
 113
 114 set< shared_ptr<pv::data::Logic> > Decoder::get_data()
 115 {
 116         set< shared_ptr<pv::data::Logic> > data;
 117         for (const auto& channel : channels_) {
 118                 shared_ptr<data::SignalBase> b(channel.second);
 119                 assert(b);
 120                 data.insert(b->logic_data());
 121         }
 122
 123         return data;
 124 }
 125
 126 srd_decoder_inst* Decoder::create_decoder_inst(srd_session *session) const
 127 {
 128         GHashTable *const opt_hash = g_hash_table_new_full(g_str_hash,
 129                 g_str_equal, g_free, (GDestroyNotify)g_variant_unref);
 130
 131         for (const auto& option : options_) {
 132                 GVariant *const value = option.second;
 133                 g_variant_ref(value);
 134                 g_hash_table_replace(opt_hash, (void*)g_strdup(
 135                         option.first.c_str()), value);
 136         }
 137
 138         srd_decoder_inst *const decoder_inst = srd_inst_new(
 139                 session, decoder_->id, opt_hash);
 140         g_hash_table_destroy(opt_hash);
 141
 142         if (!decoder_inst)
 143                 return nullptr;
 144
 145         // Setup the channels
 146         GHashTable *const channels = g_hash_table_new_full(g_str_hash,
 147                 g_str_equal, g_free, (GDestroyNotify)g_variant_unref);
 148
 149         for (const auto& channel : channels_) {
 150                 shared_ptr<data::SignalBase> b(channel.second);
 151                 GVariant *const gvar = g_variant_new_int32(b->index());
 152                 g_variant_ref_sink(gvar);
 153                 g_hash_table_insert(channels, channel.first->id, gvar);
 154         }
 155
 156         srd_inst_channel_set_all(decoder_inst, channels);
 157
 158         srd_inst_initial_pins_set_all(decoder_inst, initial_pins_);
 159
 160         return decoder_inst;
 161 }
 162
 163 }  // namespace decode
 164 }  // namespace data
 165 }  // namespace pv