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_LOGICSEGMENT_HPP
21 #define PULSEVIEW_PV_DATA_LOGICSEGMENT_HPP
23 #include "segment.hpp"
32 namespace LogicSegmentTest {
43 class LogicSegment : public Segment
54 static const unsigned int ScaleStepCount = 10;
55 static const int MipMapScalePower;
56 static const int MipMapScaleFactor;
57 static const float LogMipMapScaleFactor;
58 static const uint64_t MipMapDataUnit;
61 typedef std::pair<int64_t, bool> EdgePair;
64 LogicSegment(std::shared_ptr<sigrok::Logic> logic,
65 uint64_t samplerate, uint64_t expected_num_samples = 0);
67 virtual ~LogicSegment();
69 void append_payload(std::shared_ptr<sigrok::Logic> logic);
71 void get_samples(uint8_t *const data,
72 int64_t start_sample, int64_t end_sample) const;
75 uint64_t unpack_sample(const uint8_t *ptr) const;
76 void pack_sample(uint8_t *ptr, uint64_t value);
78 void reallocate_mipmap_level(MipMapLevel &m);
80 void append_payload_to_mipmap();
82 uint64_t get_sample(uint64_t index) const;
86 * Parses a logic data segment to generate a list of transitions
87 * in a time interval to a given level of detail.
88 * @param[out] edges The vector to place the edges into.
89 * @param[in] start The start sample index.
90 * @param[in] end The end sample index.
91 * @param[in] min_length The minimum number of samples that
92 * can be resolved at this level of detail.
93 * @param[in] sig_index The index of the signal.
95 void get_subsampled_edges(std::vector<EdgePair> &edges,
96 uint64_t start, uint64_t end,
97 float min_length, int sig_index);
100 uint64_t get_subsample(int level, uint64_t offset) const;
102 static uint64_t pow2_ceil(uint64_t x, unsigned int power);
105 struct MipMapLevel mip_map_[ScaleStepCount];
106 uint64_t last_append_sample_;
108 friend struct LogicSegmentTest::Pow2;
109 friend struct LogicSegmentTest::Basic;
110 friend struct LogicSegmentTest::LargeData;
111 friend struct LogicSegmentTest::Pulses;
112 friend struct LogicSegmentTest::LongPulses;
118 #endif // PULSEVIEW_PV_DATA_LOGICSEGMENT_HPP