2 * This file is part of the sigrok 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 #include "datasnapshot.h"
26 namespace LogicDataSnapshotTest {
34 class LogicDataSnapshot : public DataSnapshot
45 static const int ScaleStepCount = 10;
46 static const int MipMapScalePower;
47 static const int MipMapScaleFactor;
48 static const float LogMipMapScaleFactor;
49 static const uint64_t MipMapDataUnit;
52 typedef std::pair<int64_t, bool> EdgePair;
55 LogicDataSnapshot(const sr_datafeed_logic &logic);
57 virtual ~LogicDataSnapshot();
59 void append_payload(const sr_datafeed_logic &logic);
62 void reallocate_mip_map(MipMapLevel &m);
64 void append_payload_to_mipmap();
67 uint64_t get_sample(uint64_t index) const;
70 * Parses a logic data snapshot to generate a list of transitions
71 * in a time interval to a given level of detail.
72 * @param[out] edges The vector to place the edges into.
73 * @param[in] start The start sample index.
74 * @param[in] end The end sample index.
75 * @param[in] min_length The minimum number of samples that
76 * can be resolved at this level of detail.
77 * @param[in] sig_index The index of the signal.
79 void get_subsampled_edges(std::vector<EdgePair> &edges,
80 int64_t start, int64_t end,
81 float min_length, int sig_index);
84 uint64_t get_subsample(int level, uint64_t offset) const;
86 static int64_t pow2_ceil(int64_t x, unsigned int power);
89 struct MipMapLevel _mip_map[ScaleStepCount];
90 uint64_t _last_append_sample;
92 friend class LogicDataSnapshotTest::Pow2;
93 friend class LogicDataSnapshotTest::Basic;
94 friend class LogicDataSnapshotTest::LargeData;
95 friend class LogicDataSnapshotTest::Pulses;
96 friend class LogicDataSnapshotTest::LongPulses;