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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 | ||
f3d66e52 | 28 | namespace AnalogSegmentTest { |
9e587572 | 29 | struct Basic; |
340bc0a4 JH |
30 | } |
31 | ||
aba1dd16 | 32 | namespace pv { |
1b1ec774 | 33 | namespace data { |
aba1dd16 | 34 | |
f3d66e52 | 35 | class AnalogSegment : public Segment |
aba1dd16 | 36 | { |
9320072d | 37 | public: |
fda5b6e0 JH |
38 | struct EnvelopeSample |
39 | { | |
40 | float min; | |
41 | float max; | |
42 | }; | |
43 | ||
9320072d JH |
44 | struct EnvelopeSection |
45 | { | |
46 | uint64_t start; | |
47 | unsigned int scale; | |
48 | uint64_t length; | |
49 | EnvelopeSample *samples; | |
50 | }; | |
51 | ||
52 | private: | |
fda5b6e0 JH |
53 | struct Envelope |
54 | { | |
55 | uint64_t length; | |
56 | uint64_t data_length; | |
57 | EnvelopeSample *samples; | |
58 | }; | |
59 | ||
60 | private: | |
61 | static const unsigned int ScaleStepCount = 10; | |
62 | static const int EnvelopeScalePower; | |
63 | static const int EnvelopeScaleFactor; | |
64 | static const float LogEnvelopeScaleFactor; | |
65 | static const uint64_t EnvelopeDataUnit; | |
66 | ||
aba1dd16 | 67 | public: |
f3d66e52 | 68 | AnalogSegment(uint64_t samplerate, uint64_t expected_num_samples = 0); |
aba1dd16 | 69 | |
f3d66e52 | 70 | virtual ~AnalogSegment(); |
fda5b6e0 | 71 | |
bb2cdfff JH |
72 | void append_interleaved_samples(const float *data, |
73 | size_t sample_count, size_t stride); | |
a8acb46e | 74 | |
d3758367 JH |
75 | const float* get_samples(int64_t start_sample, |
76 | int64_t end_sample) const; | |
aba1dd16 | 77 | |
9320072d JH |
78 | void get_envelope_section(EnvelopeSection &s, |
79 | uint64_t start, uint64_t end, float min_length) const; | |
80 | ||
fda5b6e0 | 81 | private: |
520362f8 | 82 | void reallocate_envelope(Envelope &e); |
fda5b6e0 JH |
83 | |
84 | void append_payload_to_envelope_levels(); | |
85 | ||
86 | private: | |
8dbbc7f0 | 87 | struct Envelope envelope_levels_[ScaleStepCount]; |
340bc0a4 | 88 | |
f3d66e52 | 89 | friend struct AnalogSegmentTest::Basic; |
340bc0a4 JH |
90 | }; |
91 | ||
1b1ec774 | 92 | } // namespace data |
aba1dd16 JH |
93 | } // namespace pv |
94 | ||
a38268f0 | 95 | #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP |