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"
32 namespace AnalogSegmentTest {
42 uint64_t sample_index, chunk_num, chunk_offs;
45 } SegmentAnalogDataIterator;
47 class AnalogSegment : public QObject, public Segment
58 struct EnvelopeSection
63 EnvelopeSample *samples;
71 EnvelopeSample *samples;
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;
82 AnalogSegment(Analog& owner, uint64_t samplerate);
84 virtual ~AnalogSegment();
86 void append_interleaved_samples(const float *data,
87 size_t sample_count, size_t stride);
89 const float* get_samples(int64_t start_sample,
90 int64_t end_sample) const;
92 const pair<float, float> get_min_max() const;
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);
98 void get_envelope_section(EnvelopeSection &s,
99 uint64_t start, uint64_t end, float min_length) const;
102 void reallocate_envelope(Envelope &e);
104 void append_payload_to_envelope_levels();
109 struct Envelope envelope_levels_[ScaleStepCount];
111 float min_value_, max_value_;
113 friend struct AnalogSegmentTest::Basic;
119 #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP