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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 <thread> | |
27 | #include <mutex> | |
28 | #include <vector> | |
29 | ||
30 | namespace SegmentTest { | |
31 | struct SmallSize8Single; | |
32 | struct MediumSize8Single; | |
33 | struct MaxSize8Single; | |
34 | struct MediumSize24Single; | |
35 | struct MediumSize32Single; | |
36 | struct MaxSize32Single; | |
37 | struct MediumSize32Multi; | |
38 | struct MaxSize32Multi; | |
39 | struct MaxSize32MultiIterated; | |
40 | } | |
41 | ||
42 | namespace pv { | |
43 | namespace data { | |
44 | ||
45 | typedef struct { | |
46 | uint64_t sample_index, chunk_num, chunk_offs; | |
47 | uint8_t* chunk; | |
48 | uint8_t* value; | |
49 | } SegmentRawDataIterator; | |
50 | ||
51 | class Segment | |
52 | { | |
53 | private: | |
54 | static const uint64_t MaxChunkSize; | |
55 | ||
56 | public: | |
57 | Segment(uint64_t samplerate, unsigned int unit_size); | |
58 | ||
59 | virtual ~Segment(); | |
60 | ||
61 | uint64_t get_sample_count() const; | |
62 | ||
63 | const pv::util::Timestamp& start_time() const; | |
64 | ||
65 | double samplerate() const; | |
66 | void set_samplerate(double samplerate); | |
67 | ||
68 | unsigned int unit_size() const; | |
69 | ||
70 | void free_unused_memory(); | |
71 | ||
72 | protected: | |
73 | void append_single_sample(void *data); | |
74 | void append_samples(void *data, uint64_t samples); | |
75 | uint8_t* get_raw_samples(uint64_t start, uint64_t count) const; | |
76 | ||
77 | SegmentRawDataIterator* begin_raw_sample_iteration(uint64_t start); | |
78 | void continue_raw_sample_iteration(SegmentRawDataIterator* it, uint64_t increase); | |
79 | void end_raw_sample_iteration(SegmentRawDataIterator* it); | |
80 | ||
81 | mutable std::recursive_mutex mutex_; | |
82 | std::vector<uint8_t*> data_chunks_; | |
83 | uint8_t* current_chunk_; | |
84 | uint64_t used_samples_, unused_samples_; | |
85 | uint64_t sample_count_; | |
86 | pv::util::Timestamp start_time_; | |
87 | double samplerate_; | |
88 | uint64_t chunk_size_; | |
89 | unsigned int unit_size_; | |
90 | int iterator_count_; | |
91 | bool mem_optimization_requested_; | |
92 | ||
93 | friend struct SegmentTest::SmallSize8Single; | |
94 | friend struct SegmentTest::MediumSize8Single; | |
95 | friend struct SegmentTest::MaxSize8Single; | |
96 | friend struct SegmentTest::MediumSize24Single; | |
97 | friend struct SegmentTest::MediumSize32Single; | |
98 | friend struct SegmentTest::MaxSize32Single; | |
99 | friend struct SegmentTest::MediumSize32Multi; | |
100 | friend struct SegmentTest::MaxSize32Multi; | |
101 | friend struct SegmentTest::MaxSize32MultiIterated; | |
102 | }; | |
103 | ||
104 | } // namespace data | |
105 | } // namespace pv | |
106 | ||
107 | #endif // PULSEVIEW_PV_DATA_SEGMENT_HPP |