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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 <QDebug> | |
23 | ||
24 | #include <libsigrokcxx/libsigrokcxx.hpp> | |
25 | #include <libsigrokdecode/libsigrokdecode.h> | |
26 | ||
27 | #include "decoder.hpp" | |
28 | ||
29 | #include <pv/data/signalbase.hpp> | |
30 | #include <pv/data/decodesignal.hpp> | |
31 | ||
32 | using std::map; | |
33 | using std::string; | |
34 | ||
35 | namespace pv { | |
36 | namespace data { | |
37 | namespace decode { | |
38 | ||
39 | Decoder::Decoder(const srd_decoder *const dec) : | |
40 | decoder_(dec), | |
41 | shown_(true), | |
42 | decoder_inst_(nullptr) | |
43 | { | |
44 | // Query the decoder outputs | |
45 | uint8_t i = 0; | |
46 | for (GSList *l = dec->binary; l; l = l->next) { | |
47 | char **bin_class = (char**)l->data; | |
48 | char *name = bin_class[0]; | |
49 | char *desc = bin_class[1]; | |
50 | bin_classes_.push_back({i++, name, desc}); | |
51 | } | |
52 | } | |
53 | ||
54 | Decoder::~Decoder() | |
55 | { | |
56 | for (auto& option : options_) | |
57 | g_variant_unref(option.second); | |
58 | } | |
59 | ||
60 | const srd_decoder* Decoder::decoder() const | |
61 | { | |
62 | return decoder_; | |
63 | } | |
64 | ||
65 | const char* Decoder::name() const | |
66 | { | |
67 | return decoder_->name; | |
68 | } | |
69 | ||
70 | bool Decoder::shown() const | |
71 | { | |
72 | return shown_; | |
73 | } | |
74 | ||
75 | void Decoder::show(bool show) | |
76 | { | |
77 | shown_ = show; | |
78 | } | |
79 | ||
80 | const vector<DecodeChannel*>& Decoder::channels() const | |
81 | { | |
82 | return channels_; | |
83 | } | |
84 | ||
85 | void Decoder::set_channels(vector<DecodeChannel*> channels) | |
86 | { | |
87 | channels_ = channels; | |
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 | // If we have a decoder instance, apply option value immediately | |
102 | apply_all_options(); | |
103 | } | |
104 | ||
105 | void Decoder::apply_all_options() | |
106 | { | |
107 | if (decoder_inst_) { | |
108 | GHashTable *const opt_hash = g_hash_table_new_full(g_str_hash, | |
109 | g_str_equal, g_free, (GDestroyNotify)g_variant_unref); | |
110 | ||
111 | for (const auto& option : options_) { | |
112 | GVariant *const value = option.second; | |
113 | g_variant_ref(value); | |
114 | g_hash_table_replace(opt_hash, (void*)g_strdup( | |
115 | option.first.c_str()), value); | |
116 | } | |
117 | ||
118 | srd_inst_option_set(decoder_inst_, opt_hash); | |
119 | g_hash_table_destroy(opt_hash); | |
120 | } | |
121 | } | |
122 | ||
123 | bool Decoder::have_required_channels() const | |
124 | { | |
125 | for (DecodeChannel *ch : channels_) | |
126 | if (!ch->assigned_signal && !ch->is_optional) | |
127 | return false; | |
128 | ||
129 | return true; | |
130 | } | |
131 | ||
132 | srd_decoder_inst* Decoder::create_decoder_inst(srd_session *session) | |
133 | { | |
134 | GHashTable *const opt_hash = g_hash_table_new_full(g_str_hash, | |
135 | g_str_equal, g_free, (GDestroyNotify)g_variant_unref); | |
136 | ||
137 | for (const auto& option : options_) { | |
138 | GVariant *const value = option.second; | |
139 | g_variant_ref(value); | |
140 | g_hash_table_replace(opt_hash, (void*)g_strdup( | |
141 | option.first.c_str()), value); | |
142 | } | |
143 | ||
144 | if (decoder_inst_) | |
145 | qDebug() << "WARNING: previous decoder instance" << decoder_inst_ << "exists"; | |
146 | ||
147 | decoder_inst_ = srd_inst_new(session, decoder_->id, opt_hash); | |
148 | g_hash_table_destroy(opt_hash); | |
149 | ||
150 | if (!decoder_inst_) | |
151 | return nullptr; | |
152 | ||
153 | // Setup the channels | |
154 | GArray *const init_pin_states = g_array_sized_new(false, true, | |
155 | sizeof(uint8_t), channels_.size()); | |
156 | ||
157 | g_array_set_size(init_pin_states, channels_.size()); | |
158 | ||
159 | GHashTable *const channels = g_hash_table_new_full(g_str_hash, | |
160 | g_str_equal, g_free, (GDestroyNotify)g_variant_unref); | |
161 | ||
162 | for (DecodeChannel *ch : channels_) { | |
163 | if (!ch->assigned_signal) | |
164 | continue; | |
165 | ||
166 | init_pin_states->data[ch->id] = ch->initial_pin_state; | |
167 | ||
168 | GVariant *const gvar = g_variant_new_int32(ch->bit_id); // bit_id = bit position | |
169 | g_variant_ref_sink(gvar); | |
170 | // key is channel name (pdch->id), value is bit position in each sample (gvar) | |
171 | g_hash_table_insert(channels, ch->pdch_->id, gvar); | |
172 | } | |
173 | ||
174 | srd_inst_channel_set_all(decoder_inst_, channels); | |
175 | ||
176 | srd_inst_initial_pins_set_all(decoder_inst_, init_pin_states); | |
177 | g_array_free(init_pin_states, true); | |
178 | ||
179 | return decoder_inst_; | |
180 | } | |
181 | ||
182 | void Decoder::invalidate_decoder_inst() | |
183 | { | |
184 | decoder_inst_ = nullptr; | |
185 | } | |
186 | ||
187 | uint8_t Decoder::get_binary_class_count() const | |
188 | { | |
189 | return bin_classes_.size(); | |
190 | } | |
191 | ||
192 | const DecodeBinaryClassInfo* Decoder::get_binary_class(uint8_t id) const | |
193 | { | |
194 | return &(bin_classes_.at(id)); | |
195 | } | |
196 | ||
197 | } // namespace decode | |
198 | } // namespace data | |
199 | } // namespace pv |