pv/data/decodesignal.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
   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 "logic.hpp"
  21 #include "logicsegment.hpp"
  22 #include "decodesignal.hpp"
  23 #include "signaldata.hpp"
  24
  25 #include <pv/binding/decoder.hpp>
  26 #include <pv/data/decode/decoder.hpp>
  27 #include <pv/data/decode/row.hpp>
  28 #include <pv/data/decoderstack.hpp>
  29 #include <pv/session.hpp>
  30
  31 using std::make_shared;
  32 using std::shared_ptr;
  33 using pv::data::decode::Decoder;
  34 using pv::data::decode::Row;
  35
  36 namespace pv {
  37 namespace data {
  38
  39 DecodeSignal::DecodeSignal(shared_ptr<pv::data::DecoderStack> decoder_stack) :
  40         SignalBase(nullptr, SignalBase::DecodeChannel),
  41         decoder_stack_(decoder_stack)
  42 {
  43         set_name(QString::fromUtf8(decoder_stack_->stack().front()->decoder()->name));
  44
  45         update_channel_list();
  46
  47         connect(decoder_stack_.get(), SIGNAL(new_annotations()),
  48                 this, SLOT(on_new_annotations()));
  49 }
  50
  51 DecodeSignal::~DecodeSignal()
  52 {
  53 }
  54
  55 bool DecodeSignal::is_decode_signal() const
  56 {
  57         return true;
  58 }
  59
  60 shared_ptr<pv::data::DecoderStack> DecodeSignal::decoder_stack() const
  61 {
  62         return decoder_stack_;
  63 }
  64
  65 const list< shared_ptr<Decoder> >& DecodeSignal::decoder_stack_list() const
  66 {
  67         return decoder_stack_->stack();
  68 }
  69
  70 void DecodeSignal::stack_decoder(srd_decoder *decoder)
  71 {
  72         assert(decoder);
  73         assert(decoder_stack);
  74         decoder_stack_->push(make_shared<data::decode::Decoder>(decoder));
  75         update_channel_list();
  76         decoder_stack_->begin_decode();
  77 }
  78
  79 void DecodeSignal::remove_decoder(int index)
  80 {
  81         decoder_stack_->remove(index);
  82         update_channel_list();
  83         decoder_stack_->begin_decode();
  84 }
  85
  86 bool DecodeSignal::toggle_decoder_visibility(int index)
  87 {
  88         const list< shared_ptr<Decoder> > stack(decoder_stack_->stack());
  89
  90         auto iter = stack.cbegin();
  91         for (int i = 0; i < index; i++, iter++)
  92                 assert(iter != stack.end());
  93
  94         shared_ptr<Decoder> dec = *iter;
  95
  96         // Toggle decoder visibility
  97         bool state = false;
  98         if (dec) {
  99                 state = !dec->shown();
 100                 dec->show(state);
 101         }
 102
 103         return state;
 104 }
 105
 106 QString DecodeSignal::error_message() const
 107 {
 108         return decoder_stack_->error_message();
 109 }
 110
 111 const list<data::DecodeChannel> DecodeSignal::get_channels() const
 112 {
 113         return channels_;
 114 }
 115
 116 void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
 117 {
 118         for (data::DecodeChannel &ch : channels_)
 119                 if (ch.id == channel_id)
 120                         ch.assigned_signal = signal;
 121
 122         channels_updated();
 123
 124         decoder_stack_->begin_decode();
 125 }
 126
 127 void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
 128 {
 129         for (data::DecodeChannel &ch : channels_)
 130                 if (ch.id == channel_id)
 131                         ch.initial_pin_state = init_state;
 132
 133         channels_updated();
 134
 135         decoder_stack_->begin_decode();
 136 }
 137
 138 vector<Row> DecodeSignal::visible_rows() const
 139 {
 140         return decoder_stack_->get_visible_rows();
 141 }
 142
 143 void DecodeSignal::get_annotation_subset(
 144         vector<pv::data::decode::Annotation> &dest,
 145         const decode::Row &row, uint64_t start_sample,
 146         uint64_t end_sample) const
 147 {
 148         return decoder_stack_->get_annotation_subset(dest, row,
 149                 start_sample, end_sample);
 150 }
 151
 152 void DecodeSignal::update_channel_list()
 153 {
 154         list<data::DecodeChannel> prev_channels = channels_;
 155         channels_.clear();
 156
 157         uint16_t id = 0;
 158
 159         // Copy existing entries, create new as needed
 160         for (shared_ptr<Decoder> decoder : decoder_stack_->stack()) {
 161                 const srd_decoder* srd_d = decoder->decoder();
 162                 const GSList *l;
 163
 164                 // Mandatory channels
 165                 for (l = srd_d->channels; l; l = l->next) {
 166                         const struct srd_channel *const pdch = (struct srd_channel *)l->data;
 167                         bool ch_added = false;
 168
 169                         // Copy but update ID if this channel was in the list before
 170                         for (data::DecodeChannel ch : prev_channels)
 171                                 if (ch.pdch_ == pdch) {
 172                                         ch.id = id++;
 173                                         channels_.push_back(ch);
 174                                         ch_added = true;
 175                                         break;
 176                                 }
 177
 178                         if (!ch_added) {
 179                                 // Create new entry without a mapped signal
 180                                 data::DecodeChannel ch = {id++, false, nullptr,
 181                                         QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
 182                                         SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
 183                                 channels_.push_back(ch);
 184                         }
 185                 }
 186
 187                 // Optional channels
 188                 for (l = srd_d->opt_channels; l; l = l->next) {
 189                         const struct srd_channel *const pdch = (struct srd_channel *)l->data;
 190                         bool ch_added = false;
 191
 192                         // Copy but update ID if this channel was in the list before
 193                         for (data::DecodeChannel ch : prev_channels)
 194                                 if (ch.pdch_ == pdch) {
 195                                         ch.id = id++;
 196                                         channels_.push_back(ch);
 197                                         ch_added = true;
 198                                         break;
 199                                 }
 200
 201                         if (!ch_added) {
 202                                 // Create new entry without a mapped signal
 203                                 data::DecodeChannel ch = {id++, true, nullptr,
 204                                         QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
 205                                         SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
 206                                 channels_.push_back(ch);
 207                         }
 208                 }
 209         }
 210
 211         channels_updated();
 212 }
 213
 214 void DecodeSignal::on_new_annotations()
 215 {
 216         // Forward the signal to the frontend
 217         new_annotations();
 218 }
 219
 220 } // namespace data
 221 } // namespace pv