Main: Add -s option to allow logging to console as before
[pulseview.git] / pv / data / analogsegment.hpp
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, see <http://www.gnu.org/licenses/>.
18  */
19
20 #ifndef PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP
21 #define PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP
22
23 #include "segment.hpp"
24
25 #include <utility>
26 #include <vector>
27
28 #include <QObject>
29
30 using std::pair;
31
32 namespace AnalogSegmentTest {
33 struct Basic;
34 }
35
36 namespace pv {
37 namespace data {
38
39 class Analog;
40
41 typedef struct {
42         uint64_t sample_index, chunk_num, chunk_offs;
43         uint8_t* chunk;
44         float* value;
45 } SegmentAnalogDataIterator;
46
47 class AnalogSegment : public Segment
48 {
49         Q_OBJECT
50
51 public:
52         struct EnvelopeSample
53         {
54                 float min;
55                 float max;
56         };
57
58         struct EnvelopeSection
59         {
60                 uint64_t start;
61                 unsigned int scale;
62                 uint64_t length;
63                 EnvelopeSample *samples;
64         };
65
66 private:
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
81 public:
82         AnalogSegment(Analog& owner, uint32_t segment_id, uint64_t samplerate);
83
84         virtual ~AnalogSegment();
85
86         void append_interleaved_samples(const float *data,
87                 size_t sample_count, size_t stride);
88
89         void get_samples(int64_t start_sample, int64_t end_sample, float* dest) const;
90
91         const pair<float, float> get_min_max() const;
92
93         SegmentAnalogDataIterator* begin_sample_iteration(uint64_t start);
94         void continue_sample_iteration(SegmentAnalogDataIterator* it, uint64_t increase);
95         void end_sample_iteration(SegmentAnalogDataIterator* it);
96
97         void get_envelope_section(EnvelopeSection &s,
98                 uint64_t start, uint64_t end, float min_length) const;
99
100 private:
101         void reallocate_envelope(Envelope &e);
102
103         void append_payload_to_envelope_levels();
104
105 private:
106         Analog& owner_;
107
108         struct Envelope envelope_levels_[ScaleStepCount];
109
110         float min_value_, max_value_;
111
112         friend struct AnalogSegmentTest::Basic;
113 };
114
115 } // namespace data
116 } // namespace pv
117
118 #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP