]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 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 | #ifndef PULSEVIEW_PV_DATA_DECODERSTACK_HPP | |
21 | #define PULSEVIEW_PV_DATA_DECODERSTACK_HPP | |
22 | ||
23 | #include "signaldata.hpp" | |
24 | ||
25 | #include <atomic> | |
26 | #include <condition_variable> | |
27 | #include <list> | |
28 | #include <map> | |
29 | #include <memory> | |
30 | #include <thread> | |
31 | ||
32 | #include <boost/optional.hpp> | |
33 | ||
34 | #include <QObject> | |
35 | #include <QString> | |
36 | ||
37 | #include <pv/data/decode/row.hpp> | |
38 | #include <pv/data/decode/rowdata.hpp> | |
39 | #include <pv/util.hpp> | |
40 | ||
41 | struct srd_decoder; | |
42 | struct srd_decoder_annotation_row; | |
43 | struct srd_channel; | |
44 | struct srd_proto_data; | |
45 | struct srd_session; | |
46 | ||
47 | namespace DecoderStackTest { | |
48 | struct TwoDecoderStack; | |
49 | } | |
50 | ||
51 | namespace pv { | |
52 | ||
53 | class Session; | |
54 | ||
55 | namespace view { | |
56 | class LogicSignal; | |
57 | } | |
58 | ||
59 | namespace data { | |
60 | ||
61 | class LogicSegment; | |
62 | ||
63 | namespace decode { | |
64 | class Annotation; | |
65 | class Decoder; | |
66 | } | |
67 | ||
68 | class Logic; | |
69 | ||
70 | class DecoderStack : public QObject | |
71 | { | |
72 | Q_OBJECT | |
73 | ||
74 | private: | |
75 | static const double DecodeMargin; | |
76 | static const double DecodeThreshold; | |
77 | static const int64_t DecodeChunkLength; | |
78 | static const unsigned int DecodeNotifyPeriod; | |
79 | ||
80 | public: | |
81 | DecoderStack(pv::Session &session, const srd_decoder *const dec); | |
82 | ||
83 | virtual ~DecoderStack(); | |
84 | ||
85 | const std::list< std::shared_ptr<decode::Decoder> >& stack() const; | |
86 | void push(std::shared_ptr<decode::Decoder> decoder); | |
87 | void remove(int index); | |
88 | ||
89 | double samplerate() const; | |
90 | ||
91 | const pv::util::Timestamp& start_time() const; | |
92 | ||
93 | int64_t samples_decoded() const; | |
94 | ||
95 | std::vector<decode::Row> get_visible_rows() const; | |
96 | ||
97 | /** | |
98 | * Extracts sorted annotations between two period into a vector. | |
99 | */ | |
100 | void get_annotation_subset( | |
101 | std::vector<pv::data::decode::Annotation> &dest, | |
102 | const decode::Row &row, uint64_t start_sample, | |
103 | uint64_t end_sample) const; | |
104 | ||
105 | QString error_message(); | |
106 | ||
107 | void clear(); | |
108 | ||
109 | uint64_t max_sample_count() const; | |
110 | ||
111 | void begin_decode(); | |
112 | ||
113 | private: | |
114 | boost::optional<int64_t> wait_for_data() const; | |
115 | ||
116 | void decode_data(const int64_t sample_count, | |
117 | const unsigned int unit_size, srd_session *const session); | |
118 | ||
119 | void decode_proc(); | |
120 | ||
121 | static void annotation_callback(srd_proto_data *pdata, | |
122 | void *decoder); | |
123 | ||
124 | private Q_SLOTS: | |
125 | void on_new_frame(); | |
126 | ||
127 | void on_data_received(); | |
128 | ||
129 | void on_frame_ended(); | |
130 | ||
131 | Q_SIGNALS: | |
132 | void new_decode_data(); | |
133 | ||
134 | private: | |
135 | pv::Session &session_; | |
136 | ||
137 | pv::util::Timestamp start_time_; | |
138 | double samplerate_; | |
139 | ||
140 | /** | |
141 | * This mutex prevents more than one thread from accessing | |
142 | * libsigrokdecode concurrently. | |
143 | * @todo A proper solution should be implemented to allow multiple | |
144 | * decode operations in parallel. | |
145 | */ | |
146 | static std::mutex global_srd_mutex_; | |
147 | ||
148 | std::list< std::shared_ptr<decode::Decoder> > stack_; | |
149 | ||
150 | std::shared_ptr<pv::data::LogicSegment> segment_; | |
151 | ||
152 | mutable std::mutex input_mutex_; | |
153 | mutable std::condition_variable input_cond_; | |
154 | int64_t sample_count_; | |
155 | bool frame_complete_; | |
156 | ||
157 | mutable std::mutex output_mutex_; | |
158 | int64_t samples_decoded_; | |
159 | ||
160 | std::map<const decode::Row, decode::RowData> rows_; | |
161 | ||
162 | std::map<std::pair<const srd_decoder*, int>, decode::Row> class_rows_; | |
163 | ||
164 | QString error_message_; | |
165 | ||
166 | std::thread decode_thread_; | |
167 | std::atomic<bool> interrupt_; | |
168 | ||
169 | friend struct DecoderStackTest::TwoDecoderStack; | |
170 | }; | |
171 | ||
172 | } // namespace data | |
173 | } // namespace pv | |
174 | ||
175 | #endif // PULSEVIEW_PV_DATA_DECODERSTACK_HPP |