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ad908057 SA |
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 | #ifndef PULSEVIEW_PV_DATA_DECODESIGNAL_HPP | |
21 | #define PULSEVIEW_PV_DATA_DECODESIGNAL_HPP | |
22 | ||
47747218 SA |
23 | #include <atomic> |
24 | #include <condition_variable> | |
132a5c6d | 25 | #include <unordered_set> |
ecd07c20 SA |
26 | #include <vector> |
27 | ||
47747218 SA |
28 | #include <boost/optional.hpp> |
29 | ||
30 | #include <QSettings> | |
ecd07c20 SA |
31 | #include <QString> |
32 | ||
ad908057 SA |
33 | #include <libsigrokdecode/libsigrokdecode.h> |
34 | ||
47747218 SA |
35 | #include <pv/data/decode/row.hpp> |
36 | #include <pv/data/decode/rowdata.hpp> | |
ad908057 | 37 | #include <pv/data/signalbase.hpp> |
946b52e1 | 38 | #include <pv/util.hpp> |
ad908057 | 39 | |
47747218 SA |
40 | using std::atomic; |
41 | using std::condition_variable; | |
42 | using std::map; | |
43 | using std::mutex; | |
44 | using std::pair; | |
132a5c6d | 45 | using std::unordered_set; |
ecd07c20 | 46 | using std::vector; |
ad908057 SA |
47 | using std::shared_ptr; |
48 | ||
49 | namespace pv { | |
47747218 SA |
50 | class Session; |
51 | ||
ad908057 SA |
52 | namespace data { |
53 | ||
ecd07c20 SA |
54 | namespace decode { |
55 | class Annotation; | |
56 | class Decoder; | |
57 | class Row; | |
58 | } | |
59 | ||
ad908057 | 60 | class Logic; |
47747218 | 61 | class LogicSegment; |
9f97b357 | 62 | class SignalBase; |
ad908057 SA |
63 | class SignalData; |
64 | ||
9f97b357 SA |
65 | struct DecodeChannel |
66 | { | |
67 | uint16_t id; // Also tells which bit within a sample represents this channel | |
68 | const bool is_optional; | |
69 | const pv::data::SignalBase *assigned_signal; | |
70 | const QString name, desc; | |
71 | int initial_pin_state; | |
72 | const shared_ptr<pv::data::decode::Decoder> decoder_; | |
73 | const srd_channel *pdch_; | |
74 | }; | |
75 | ||
ad908057 SA |
76 | class DecodeSignal : public SignalBase |
77 | { | |
78 | Q_OBJECT | |
79 | ||
47747218 SA |
80 | private: |
81 | static const double DecodeMargin; | |
82 | static const double DecodeThreshold; | |
83 | static const int64_t DecodeChunkLength; | |
84 | static const unsigned int DecodeNotifyPeriod; | |
85 | ||
ad908057 | 86 | public: |
47747218 | 87 | DecodeSignal(pv::Session &session); |
ad908057 SA |
88 | virtual ~DecodeSignal(); |
89 | ||
90 | bool is_decode_signal() const; | |
47747218 | 91 | const vector< shared_ptr<data::decode::Decoder> >& decoder_stack() const; |
ad908057 SA |
92 | |
93 | void stack_decoder(srd_decoder *decoder); | |
94 | void remove_decoder(int index); | |
95 | bool toggle_decoder_visibility(int index); | |
96 | ||
47747218 | 97 | void reset_decode(); |
946b52e1 | 98 | void begin_decode(); |
ecd07c20 SA |
99 | QString error_message() const; |
100 | ||
47747218 | 101 | const vector<data::DecodeChannel> get_channels() const; |
132a5c6d | 102 | void auto_assign_signals(); |
9f97b357 SA |
103 | void assign_signal(const uint16_t channel_id, const SignalBase *signal); |
104 | ||
105 | void set_initial_pin_state(const uint16_t channel_id, const int init_state); | |
106 | ||
ff83d980 SA |
107 | double samplerate() const; |
108 | const pv::util::Timestamp& start_time() const; | |
0c5fe73e SA |
109 | |
110 | /** | |
111 | * Returns the number of samples that can be worked on, | |
112 | * i.e. the number of samples where samples are available | |
113 | * for all connected channels. | |
114 | */ | |
115 | int64_t get_working_sample_count() const; | |
116 | ||
117 | int64_t get_decoded_sample_count() const; | |
ff83d980 | 118 | |
ecd07c20 SA |
119 | vector<decode::Row> visible_rows() const; |
120 | ||
121 | /** | |
122 | * Extracts sorted annotations between two period into a vector. | |
123 | */ | |
124 | void get_annotation_subset( | |
125 | vector<pv::data::decode::Annotation> &dest, | |
126 | const decode::Row &row, uint64_t start_sample, | |
127 | uint64_t end_sample) const; | |
128 | ||
47747218 SA |
129 | virtual void save_settings(QSettings &settings) const; |
130 | ||
131 | virtual void restore_settings(QSettings &settings); | |
132 | ||
133 | /** | |
134 | * Helper function for static annotation_callback(), | |
135 | * must be public so the function can access it. | |
136 | * Don't use from outside this class. | |
137 | */ | |
138 | uint64_t inc_annotation_count(); | |
139 | ||
9f97b357 SA |
140 | private: |
141 | void update_channel_list(); | |
142 | ||
47747218 SA |
143 | void logic_mux_proc(); |
144 | ||
145 | boost::optional<int64_t> wait_for_data() const; | |
146 | ||
147 | void decode_data(const int64_t abs_start_samplenum, const int64_t sample_count, | |
148 | srd_session *const session); | |
149 | ||
150 | void decode_proc(); | |
151 | ||
152 | static void annotation_callback(srd_proto_data *pdata, void *decode_signal); | |
153 | ||
ad908057 SA |
154 | Q_SIGNALS: |
155 | void new_annotations(); | |
9f97b357 | 156 | void channels_updated(); |
ad908057 SA |
157 | |
158 | private Q_SLOTS: | |
47747218 SA |
159 | void on_capture_state_changed(int state); |
160 | void on_data_received(); | |
161 | void on_frame_ended(); | |
ad908057 SA |
162 | |
163 | private: | |
47747218 SA |
164 | pv::Session &session_; |
165 | ||
166 | vector<data::DecodeChannel> channels_; | |
167 | ||
168 | shared_ptr<Logic> logic_mux_data_; | |
169 | shared_ptr<LogicSegment> segment_; | |
170 | bool logic_mux_data_invalid_; | |
171 | ||
172 | pv::util::Timestamp start_time_; | |
173 | double samplerate_; | |
174 | ||
175 | int64_t sample_count_, annotation_count_, samples_decoded_; | |
176 | ||
177 | vector< shared_ptr<decode::Decoder> > stack_; | |
178 | map<const decode::Row, decode::RowData> rows_; | |
179 | map<pair<const srd_decoder*, int>, decode::Row> class_rows_; | |
180 | ||
181 | /** | |
182 | * This mutex prevents more than one thread from accessing | |
183 | * libsigrokdecode concurrently. | |
184 | * @todo A proper solution should be implemented to allow multiple | |
185 | * decode operations in parallel. | |
186 | */ | |
187 | static mutex global_srd_mutex_; | |
188 | ||
189 | mutable mutex input_mutex_, output_mutex_; | |
190 | mutable condition_variable decode_input_cond_, logic_mux_cond_; | |
191 | bool frame_complete_; | |
192 | ||
193 | std::thread decode_thread_, logic_mux_thread_; | |
194 | atomic<bool> decode_interrupt_, logic_mux_interrupt_; | |
195 | ||
196 | QString error_message_; | |
ad908057 SA |
197 | }; |
198 | ||
199 | } // namespace data | |
200 | } // namespace pv | |
201 | ||
202 | #endif // PULSEVIEW_PV_DATA_DECODESIGNAL_HPP |