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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net> | |
5 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #ifndef PULSEVIEW_PV_DATA_SEGMENT_HPP | |
22 | #define PULSEVIEW_PV_DATA_SEGMENT_HPP | |
23 | ||
24 | #include "pv/util.hpp" | |
25 | ||
26 | #include <atomic> | |
27 | #include <memory> | |
28 | #include <mutex> | |
29 | #include <thread> | |
30 | #include <deque> | |
31 | ||
32 | #include <QObject> | |
33 | ||
34 | using std::atomic; | |
35 | using std::recursive_mutex; | |
36 | using std::deque; | |
37 | ||
38 | namespace SegmentTest { | |
39 | struct SmallSize8Single; | |
40 | struct MediumSize8Single; | |
41 | struct MaxSize8Single; | |
42 | struct MediumSize24Single; | |
43 | struct MediumSize32Single; | |
44 | struct MaxSize32Single; | |
45 | struct MediumSize32Multi; | |
46 | struct MaxSize32Multi; | |
47 | struct MaxSize32MultiAtOnce; | |
48 | struct MaxSize32MultiIterated; | |
49 | } // namespace SegmentTest | |
50 | ||
51 | namespace pv { | |
52 | namespace data { | |
53 | ||
54 | typedef struct { | |
55 | uint64_t sample_index, chunk_num, chunk_offs; | |
56 | uint8_t* chunk; | |
57 | } SegmentDataIterator; | |
58 | ||
59 | class Segment : public QObject | |
60 | { | |
61 | Q_OBJECT | |
62 | ||
63 | private: | |
64 | static const uint64_t MaxChunkSize; | |
65 | ||
66 | public: | |
67 | Segment(uint32_t segment_id, uint64_t samplerate, unsigned int unit_size); | |
68 | ||
69 | virtual ~Segment(); | |
70 | ||
71 | uint64_t get_sample_count() const; | |
72 | ||
73 | const pv::util::Timestamp& start_time() const; | |
74 | ||
75 | double samplerate() const; | |
76 | void set_samplerate(double samplerate); | |
77 | ||
78 | unsigned int unit_size() const; | |
79 | ||
80 | uint32_t segment_id() const; | |
81 | ||
82 | void set_complete(); | |
83 | bool is_complete() const; | |
84 | ||
85 | void free_unused_memory(); | |
86 | ||
87 | Q_SIGNALS: | |
88 | void completed(); | |
89 | ||
90 | protected: | |
91 | void append_single_sample(void *data); | |
92 | void append_samples(void *data, uint64_t samples); | |
93 | const uint8_t* get_raw_sample(uint64_t sample_num) const; | |
94 | void get_raw_samples(uint64_t start, uint64_t count, uint8_t *dest) const; | |
95 | ||
96 | SegmentDataIterator* begin_sample_iteration(uint64_t start); | |
97 | void continue_sample_iteration(SegmentDataIterator* it, uint64_t increase); | |
98 | void end_sample_iteration(SegmentDataIterator* it); | |
99 | uint8_t* get_iterator_value(SegmentDataIterator* it); | |
100 | uint64_t get_iterator_valid_length(SegmentDataIterator* it); | |
101 | ||
102 | uint32_t segment_id_; | |
103 | mutable recursive_mutex mutex_; | |
104 | deque<uint8_t*> data_chunks_; | |
105 | uint8_t* current_chunk_; | |
106 | uint64_t used_samples_, unused_samples_; | |
107 | atomic<uint64_t> sample_count_; | |
108 | pv::util::Timestamp start_time_; | |
109 | double samplerate_; | |
110 | uint64_t chunk_size_; | |
111 | unsigned int unit_size_; | |
112 | int iterator_count_; | |
113 | bool mem_optimization_requested_; | |
114 | bool is_complete_; | |
115 | ||
116 | friend struct SegmentTest::SmallSize8Single; | |
117 | friend struct SegmentTest::MediumSize8Single; | |
118 | friend struct SegmentTest::MaxSize8Single; | |
119 | friend struct SegmentTest::MediumSize24Single; | |
120 | friend struct SegmentTest::MediumSize32Single; | |
121 | friend struct SegmentTest::MaxSize32Single; | |
122 | friend struct SegmentTest::MediumSize32Multi; | |
123 | friend struct SegmentTest::MaxSize32Multi; | |
124 | friend struct SegmentTest::MaxSize32MultiAtOnce; | |
125 | friend struct SegmentTest::MaxSize32MultiIterated; | |
126 | }; | |
127 | ||
128 | } // namespace data | |
129 | } // namespace pv | |
130 | ||
131 | typedef std::shared_ptr<pv::data::Segment> SharedPtrToSegment; | |
132 | ||
133 | Q_DECLARE_METATYPE(SharedPtrToSegment); | |
134 | ||
135 | #endif // PULSEVIEW_PV_DATA_SEGMENT_HPP |