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28a4c9c5 | 1 | /* |
b3f22de0 | 2 | * This file is part of the PulseView project. |
28a4c9c5 JH |
3 | * |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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 | |
19 | */ | |
20 | ||
1b1ec774 JH |
21 | #ifndef PULSEVIEW_PV_DATA_LOGICSNAPSHOT_H |
22 | #define PULSEVIEW_PV_DATA_LOGICSNAPSHOT_H | |
640d091b | 23 | |
1b1ec774 | 24 | #include "snapshot.h" |
28a4c9c5 | 25 | |
2858b391 JH |
26 | #include <utility> |
27 | #include <vector> | |
28 | ||
1b1ec774 | 29 | namespace LogicSnapshotTest { |
023887ca JH |
30 | class Pow2; |
31 | class Basic; | |
32 | class LargeData; | |
33 | class Pulses; | |
34 | class LongPulses; | |
ecda6ca9 JH |
35 | } |
36 | ||
51e77110 | 37 | namespace pv { |
1b1ec774 | 38 | namespace data { |
51e77110 | 39 | |
1b1ec774 | 40 | class LogicSnapshot : public Snapshot |
28a4c9c5 | 41 | { |
4ceab49a JH |
42 | private: |
43 | struct MipMapLevel | |
44 | { | |
45 | uint64_t length; | |
46 | uint64_t data_length; | |
47 | void *data; | |
48 | }; | |
49 | ||
50 | private: | |
60b0c2da | 51 | static const unsigned int ScaleStepCount = 10; |
4ceab49a JH |
52 | static const int MipMapScalePower; |
53 | static const int MipMapScaleFactor; | |
0b02e057 | 54 | static const float LogMipMapScaleFactor; |
4ceab49a JH |
55 | static const uint64_t MipMapDataUnit; |
56 | ||
2858b391 JH |
57 | public: |
58 | typedef std::pair<int64_t, bool> EdgePair; | |
59 | ||
28a4c9c5 | 60 | public: |
1b1ec774 | 61 | LogicSnapshot(const sr_datafeed_logic &logic); |
28a4c9c5 | 62 | |
1b1ec774 | 63 | virtual ~LogicSnapshot(); |
4ceab49a | 64 | |
28a4c9c5 | 65 | void append_payload(const sr_datafeed_logic &logic); |
2858b391 | 66 | |
4ceab49a | 67 | private: |
023887ca | 68 | void reallocate_mipmap_level(MipMapLevel &m); |
4ceab49a JH |
69 | |
70 | void append_payload_to_mipmap(); | |
71 | ||
2858b391 JH |
72 | uint64_t get_sample(uint64_t index) const; |
73 | ||
30fcfd9f | 74 | public: |
2858b391 JH |
75 | /** |
76 | * Parses a logic data snapshot to generate a list of transitions | |
77 | * in a time interval to a given level of detail. | |
78 | * @param[out] edges The vector to place the edges into. | |
79 | * @param[in] start The start sample index. | |
80 | * @param[in] end The end sample index. | |
0b02e057 | 81 | * @param[in] min_length The minimum number of samples that |
2858b391 JH |
82 | * can be resolved at this level of detail. |
83 | * @param[in] sig_index The index of the signal. | |
84 | **/ | |
85 | void get_subsampled_edges(std::vector<EdgePair> &edges, | |
60b0c2da | 86 | uint64_t start, uint64_t end, |
0b02e057 JH |
87 | float min_length, int sig_index); |
88 | ||
89 | private: | |
b2bcbe51 | 90 | uint64_t get_subsample(int level, uint64_t offset) const; |
0b02e057 | 91 | |
60b0c2da | 92 | static uint64_t pow2_ceil(uint64_t x, unsigned int power); |
4ceab49a JH |
93 | |
94 | private: | |
95 | struct MipMapLevel _mip_map[ScaleStepCount]; | |
96 | uint64_t _last_append_sample; | |
97 | ||
1b1ec774 JH |
98 | friend class LogicSnapshotTest::Pow2; |
99 | friend class LogicSnapshotTest::Basic; | |
100 | friend class LogicSnapshotTest::LargeData; | |
101 | friend class LogicSnapshotTest::Pulses; | |
102 | friend class LogicSnapshotTest::LongPulses; | |
28a4c9c5 | 103 | }; |
51e77110 | 104 | |
1b1ec774 | 105 | } // namespace data |
51e77110 | 106 | } // namespace pv |
640d091b | 107 | |
1b1ec774 | 108 | #endif // PULSEVIEW_PV_DATA_LOGICSNAPSHOT_H |