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 using std::enable_shared_from_this;
33 namespace AnalogSegmentTest {
42 class AnalogSegment : public Segment, public enable_shared_from_this<Segment>
53 struct EnvelopeSection
58 EnvelopeSample *samples;
66 EnvelopeSample *samples;
70 static const unsigned int ScaleStepCount = 10;
71 static const int EnvelopeScalePower;
72 static const int EnvelopeScaleFactor;
73 static const float LogEnvelopeScaleFactor;
74 static const uint64_t EnvelopeDataUnit;
77 AnalogSegment(Analog& owner, uint32_t segment_id, uint64_t samplerate);
79 virtual ~AnalogSegment();
81 void append_interleaved_samples(const float *data,
82 size_t sample_count, size_t stride);
84 void get_samples(int64_t start_sample, int64_t end_sample, float* dest) const;
86 const pair<float, float> get_min_max() const;
88 float* get_iterator_value_ptr(SegmentDataIterator* it);
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();
101 struct Envelope envelope_levels_[ScaleStepCount];
103 float min_value_, max_value_;
105 friend struct AnalogSegmentTest::Basic;
111 #endif // PULSEVIEW_PV_DATA_ANALOGSEGMENT_HPP