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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef PULSEVIEW_PV_DATA_LOGICSNAPSHOT_H
22 #define PULSEVIEW_PV_DATA_LOGICSNAPSHOT_H
29 namespace LogicSnapshotTest {
40 class LogicSnapshot : public Snapshot
51 static const unsigned int ScaleStepCount = 10;
52 static const int MipMapScalePower;
53 static const int MipMapScaleFactor;
54 static const float LogMipMapScaleFactor;
55 static const uint64_t MipMapDataUnit;
58 typedef std::pair<int64_t, bool> EdgePair;
61 LogicSnapshot(const sr_datafeed_logic &logic,
62 uint64_t expected_num_samples = 0);
64 virtual ~LogicSnapshot();
66 void append_payload(const sr_datafeed_logic &logic);
68 void get_samples(uint8_t *const data,
69 int64_t start_sample, int64_t end_sample) const;
72 uint64_t unpack_sample(const uint8_t *ptr) const;
73 void pack_sample(uint8_t *ptr, uint64_t value);
75 void reallocate_mipmap_level(MipMapLevel &m);
77 void append_payload_to_mipmap();
79 uint64_t get_sample(uint64_t index) const;
83 * Parses a logic data snapshot to generate a list of transitions
84 * in a time interval to a given level of detail.
85 * @param[out] edges The vector to place the edges into.
86 * @param[in] start The start sample index.
87 * @param[in] end The end sample index.
88 * @param[in] min_length The minimum number of samples that
89 * can be resolved at this level of detail.
90 * @param[in] sig_index The index of the signal.
92 void get_subsampled_edges(std::vector<EdgePair> &edges,
93 uint64_t start, uint64_t end,
94 float min_length, int sig_index);
97 uint64_t get_subsample(int level, uint64_t offset) const;
99 static uint64_t pow2_ceil(uint64_t x, unsigned int power);
102 struct MipMapLevel _mip_map[ScaleStepCount];
103 uint64_t _last_append_sample;
105 friend class LogicSnapshotTest::Pow2;
106 friend class LogicSnapshotTest::Basic;
107 friend class LogicSnapshotTest::LargeData;
108 friend class LogicSnapshotTest::Pulses;
109 friend class LogicSnapshotTest::LongPulses;
115 #endif // PULSEVIEW_PV_DATA_LOGICSNAPSHOT_H