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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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #ifndef PULSEVIEW_PV_DATA_DECODER_H | |
22 | #define PULSEVIEW_PV_DATA_DECODER_H | |
23 | ||
24 | #include "signaldata.h" | |
25 | ||
26 | #include <map> | |
27 | ||
28 | #include <boost/shared_ptr.hpp> | |
29 | #include <boost/thread.hpp> | |
30 | ||
31 | #include <QObject> | |
32 | #include <QString> | |
33 | ||
34 | #include <glib.h> | |
35 | ||
36 | struct srd_decoder; | |
37 | struct srd_probe; | |
38 | struct srd_proto_data; | |
39 | ||
40 | namespace DecoderTest { | |
41 | class TwoDecoder; | |
42 | } | |
43 | ||
44 | namespace pv { | |
45 | ||
46 | namespace view { | |
47 | class LogicSignal; | |
48 | ||
49 | namespace decode { | |
50 | class Annotation; | |
51 | } | |
52 | ||
53 | } | |
54 | ||
55 | namespace data { | |
56 | ||
57 | class Logic; | |
58 | ||
59 | class Decoder : public QObject, public SignalData | |
60 | { | |
61 | Q_OBJECT | |
62 | ||
63 | private: | |
64 | static const double DecodeMargin; | |
65 | static const double DecodeThreshold; | |
66 | static const int64_t DecodeChunkLength; | |
67 | ||
68 | public: | |
69 | Decoder(const srd_decoder *const decoder, | |
70 | std::map<const srd_probe*, | |
71 | boost::shared_ptr<pv::view::LogicSignal> > probes, | |
72 | GHashTable *options); | |
73 | ||
74 | virtual ~Decoder(); | |
75 | ||
76 | const srd_decoder* get_decoder() const; | |
77 | ||
78 | const std::vector< boost::shared_ptr<pv::view::decode::Annotation> > | |
79 | annotations() const; | |
80 | ||
81 | QString error_message(); | |
82 | ||
83 | void clear_snapshots(); | |
84 | ||
85 | private: | |
86 | void begin_decode(); | |
87 | ||
88 | void init_decoder(); | |
89 | ||
90 | void decode_proc(boost::shared_ptr<data::Logic> data); | |
91 | ||
92 | static void annotation_callback(srd_proto_data *pdata, | |
93 | void *decoder); | |
94 | ||
95 | signals: | |
96 | void new_decode_data(); | |
97 | ||
98 | private: | |
99 | ||
100 | /** | |
101 | * This mutex prevents more than one decode operation occuring | |
102 | * concurrently. | |
103 | * @todo A proper solution should be implemented to allow multiple | |
104 | * decode operations. | |
105 | */ | |
106 | static boost::mutex _global_decode_mutex; | |
107 | ||
108 | const srd_decoder *const _decoder; | |
109 | std::map<const srd_probe*, boost::shared_ptr<view::LogicSignal> > | |
110 | _probes; | |
111 | GHashTable *_options; | |
112 | ||
113 | mutable boost::mutex _mutex; | |
114 | std::vector< boost::shared_ptr<pv::view::decode::Annotation> > | |
115 | _annotations; | |
116 | QString _error_message; | |
117 | ||
118 | boost::thread _decode_thread; | |
119 | ||
120 | friend class DecoderTest::TwoDecoder; | |
121 | }; | |
122 | ||
123 | } // namespace data | |
124 | } // namespace pv | |
125 | ||
126 | #endif // PULSEVIEW_PV_DATA_DECODER_H |