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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 | |
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 | ||
a38268f0 SA |
21 | #ifndef PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP |
22 | #define PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP | |
aba1dd16 | 23 | |
f3d66e52 | 24 | #include "segment.hpp" |
aba1dd16 JH |
25 | |
26 | #include <utility> | |
27 | #include <vector> | |
28 | ||
f3d66e52 | 29 | namespace AnalogSegmentTest { |
9e587572 | 30 | struct Basic; |
340bc0a4 JH |
31 | } |
32 | ||
aba1dd16 | 33 | namespace pv { |
1b1ec774 | 34 | namespace data { |
aba1dd16 | 35 | |
f3d66e52 | 36 | class AnalogSegment : public Segment |
aba1dd16 | 37 | { |
9320072d | 38 | public: |
fda5b6e0 JH |
39 | struct EnvelopeSample |
40 | { | |
41 | float min; | |
42 | float max; | |
43 | }; | |
44 | ||
9320072d JH |
45 | struct EnvelopeSection |
46 | { | |
47 | uint64_t start; | |
48 | unsigned int scale; | |
49 | uint64_t length; | |
50 | EnvelopeSample *samples; | |
51 | }; | |
52 | ||
53 | private: | |
fda5b6e0 JH |
54 | struct Envelope |
55 | { | |
56 | uint64_t length; | |
57 | uint64_t data_length; | |
58 | EnvelopeSample *samples; | |
59 | }; | |
60 | ||
61 | private: | |
62 | static const unsigned int ScaleStepCount = 10; | |
63 | static const int EnvelopeScalePower; | |
64 | static const int EnvelopeScaleFactor; | |
65 | static const float LogEnvelopeScaleFactor; | |
66 | static const uint64_t EnvelopeDataUnit; | |
67 | ||
aba1dd16 | 68 | public: |
f3d66e52 | 69 | AnalogSegment(uint64_t samplerate, uint64_t expected_num_samples = 0); |
aba1dd16 | 70 | |
f3d66e52 | 71 | virtual ~AnalogSegment(); |
fda5b6e0 | 72 | |
bb2cdfff JH |
73 | void append_interleaved_samples(const float *data, |
74 | size_t sample_count, size_t stride); | |
a8acb46e | 75 | |
d3758367 JH |
76 | const float* get_samples(int64_t start_sample, |
77 | int64_t end_sample) const; | |
aba1dd16 | 78 | |
9320072d JH |
79 | void get_envelope_section(EnvelopeSection &s, |
80 | uint64_t start, uint64_t end, float min_length) const; | |
81 | ||
fda5b6e0 JH |
82 | private: |
83 | void reallocate_envelope(Envelope &l); | |
84 | ||
85 | void append_payload_to_envelope_levels(); | |
86 | ||
87 | private: | |
8dbbc7f0 | 88 | struct Envelope envelope_levels_[ScaleStepCount]; |
340bc0a4 | 89 | |
f3d66e52 | 90 | friend struct AnalogSegmentTest::Basic; |
340bc0a4 JH |
91 | }; |
92 | ||
1b1ec774 | 93 | } // namespace data |
aba1dd16 JH |
94 | } // namespace pv |
95 | ||
a38268f0 | 96 | #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP |