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"
28 namespace AnalogSegmentTest {
36 uint64_t sample_index, chunk_num, chunk_offs;
39 } SegmentAnalogDataIterator;
41 class AnalogSegment : public Segment
50 struct EnvelopeSection
55 EnvelopeSample *samples;
63 EnvelopeSample *samples;
67 static const unsigned int ScaleStepCount = 10;
68 static const int EnvelopeScalePower;
69 static const int EnvelopeScaleFactor;
70 static const float LogEnvelopeScaleFactor;
71 static const uint64_t EnvelopeDataUnit;
74 AnalogSegment(uint64_t samplerate);
76 virtual ~AnalogSegment();
78 void append_interleaved_samples(const float *data,
79 size_t sample_count, size_t stride);
81 const float* get_samples(int64_t start_sample,
82 int64_t end_sample) const;
84 const std::pair<float, float> get_min_max() const;
86 SegmentAnalogDataIterator* begin_sample_iteration(uint64_t start) const;
87 void continue_sample_iteration(SegmentAnalogDataIterator* it, uint64_t increase) const;
88 void end_sample_iteration(SegmentAnalogDataIterator* it) const;
90 void get_envelope_section(EnvelopeSection &s,
91 uint64_t start, uint64_t end, float min_length) const;
94 void reallocate_envelope(Envelope &e);
96 void append_payload_to_envelope_levels();
99 struct Envelope envelope_levels_[ScaleStepCount];
101 float min_value_, max_value_;
103 friend struct AnalogSegmentTest::Basic;
109 #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP