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aba1dd16 JH |
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 | |
efdec55a | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
aba1dd16 JH |
18 | */ |
19 | ||
a38268f0 SA |
20 | #ifndef PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP |
21 | #define PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP | |
aba1dd16 | 22 | |
f3d66e52 | 23 | #include "segment.hpp" |
aba1dd16 JH |
24 | |
25 | #include <utility> | |
26 | #include <vector> | |
27 | ||
7db61e77 SA |
28 | #include <QObject> |
29 | ||
6f925ba9 UH |
30 | using std::pair; |
31 | ||
f3d66e52 | 32 | namespace AnalogSegmentTest { |
9e587572 | 33 | struct Basic; |
340bc0a4 JH |
34 | } |
35 | ||
aba1dd16 | 36 | namespace pv { |
1b1ec774 | 37 | namespace data { |
aba1dd16 | 38 | |
7db61e77 SA |
39 | class Analog; |
40 | ||
26a883ed SA |
41 | typedef struct { |
42 | uint64_t sample_index, chunk_num, chunk_offs; | |
43 | uint8_t* chunk; | |
44 | float* value; | |
45 | } SegmentAnalogDataIterator; | |
46 | ||
7db61e77 | 47 | class AnalogSegment : public QObject, public Segment |
aba1dd16 | 48 | { |
7db61e77 SA |
49 | Q_OBJECT |
50 | ||
9320072d | 51 | public: |
fda5b6e0 JH |
52 | struct EnvelopeSample |
53 | { | |
54 | float min; | |
55 | float max; | |
56 | }; | |
57 | ||
9320072d JH |
58 | struct EnvelopeSection |
59 | { | |
60 | uint64_t start; | |
61 | unsigned int scale; | |
62 | uint64_t length; | |
63 | EnvelopeSample *samples; | |
64 | }; | |
65 | ||
66 | private: | |
fda5b6e0 JH |
67 | struct Envelope |
68 | { | |
69 | uint64_t length; | |
70 | uint64_t data_length; | |
71 | EnvelopeSample *samples; | |
72 | }; | |
73 | ||
74 | private: | |
75 | static const unsigned int ScaleStepCount = 10; | |
76 | static const int EnvelopeScalePower; | |
77 | static const int EnvelopeScaleFactor; | |
78 | static const float LogEnvelopeScaleFactor; | |
79 | static const uint64_t EnvelopeDataUnit; | |
80 | ||
aba1dd16 | 81 | public: |
7db61e77 | 82 | AnalogSegment(Analog& owner, uint64_t samplerate); |
aba1dd16 | 83 | |
f3d66e52 | 84 | virtual ~AnalogSegment(); |
fda5b6e0 | 85 | |
bb2cdfff JH |
86 | void append_interleaved_samples(const float *data, |
87 | size_t sample_count, size_t stride); | |
a8acb46e | 88 | |
d3758367 JH |
89 | const float* get_samples(int64_t start_sample, |
90 | int64_t end_sample) const; | |
aba1dd16 | 91 | |
6f925ba9 | 92 | const pair<float, float> get_min_max() const; |
73e377fe | 93 | |
c70e3464 SA |
94 | SegmentAnalogDataIterator* begin_sample_iteration(uint64_t start); |
95 | void continue_sample_iteration(SegmentAnalogDataIterator* it, uint64_t increase); | |
96 | void end_sample_iteration(SegmentAnalogDataIterator* it); | |
26a883ed | 97 | |
9320072d JH |
98 | void get_envelope_section(EnvelopeSection &s, |
99 | uint64_t start, uint64_t end, float min_length) const; | |
100 | ||
fda5b6e0 | 101 | private: |
520362f8 | 102 | void reallocate_envelope(Envelope &e); |
fda5b6e0 JH |
103 | |
104 | void append_payload_to_envelope_levels(); | |
105 | ||
106 | private: | |
7db61e77 SA |
107 | Analog& owner_; |
108 | ||
8dbbc7f0 | 109 | struct Envelope envelope_levels_[ScaleStepCount]; |
340bc0a4 | 110 | |
73e377fe SA |
111 | float min_value_, max_value_; |
112 | ||
f3d66e52 | 113 | friend struct AnalogSegmentTest::Basic; |
340bc0a4 JH |
114 | }; |
115 | ||
1b1ec774 | 116 | } // namespace data |
aba1dd16 JH |
117 | } // namespace pv |
118 | ||
a38268f0 | 119 | #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP |