2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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/>.
20 #ifndef PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP
21 #define PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP
23 #include "segment.hpp"
30 namespace AnalogSegmentTest {
40 uint64_t sample_index, chunk_num, chunk_offs;
43 } SegmentAnalogDataIterator;
45 class AnalogSegment : public QObject, public Segment
56 struct EnvelopeSection
61 EnvelopeSample *samples;
69 EnvelopeSample *samples;
73 static const unsigned int ScaleStepCount = 10;
74 static const int EnvelopeScalePower;
75 static const int EnvelopeScaleFactor;
76 static const float LogEnvelopeScaleFactor;
77 static const uint64_t EnvelopeDataUnit;
80 AnalogSegment(Analog& owner, uint64_t samplerate);
82 virtual ~AnalogSegment();
84 void append_interleaved_samples(const float *data,
85 size_t sample_count, size_t stride);
87 const float* get_samples(int64_t start_sample,
88 int64_t end_sample) const;
90 const std::pair<float, float> get_min_max() const;
92 SegmentAnalogDataIterator* begin_sample_iteration(uint64_t start);
93 void continue_sample_iteration(SegmentAnalogDataIterator* it, uint64_t increase);
94 void end_sample_iteration(SegmentAnalogDataIterator* it);
96 void get_envelope_section(EnvelopeSection &s,
97 uint64_t start, uint64_t end, float min_length) const;
100 void reallocate_envelope(Envelope &e);
102 void append_payload_to_envelope_levels();
107 struct Envelope envelope_levels_[ScaleStepCount];
109 float min_value_, max_value_;
111 friend struct AnalogSegmentTest::Basic;
117 #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP