Open Lighting Architecture: libs/acn/DMPE131Inflator.h Source File

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DMPE131Inflator.h
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15 *
16 * DMPE131Inflator.h
17 * This is a subclass of the DMPInflator which knows how to handle DMP over
18 * E1.31 messages.
19 * Copyright (C) 2009 Simon Newton
20 */
21
22#ifndef LIBS_ACN_DMPE131INFLATOR_H_
23#define LIBS_ACN_DMPE131INFLATOR_H_
24
25#include <map>
26#include <vector>
27#include "ola/Clock.h"
28#include "ola/Callback.h"
29#include "ola/DmxBuffer.h"
30#include "libs/acn/DMPInflator.h"
31
32namespace ola {
33namespace acn {
34
35 class DMPE131Inflator: public DMPInflator {
36 friend class DMPE131InflatorTest;
37
38 public:
39 explicit DMPE131Inflator(bool ignore_preview):
40 DMPInflator(),
41 m_ignore_preview(ignore_preview) {
42 }
43 ~DMPE131Inflator();
44
45 bool SetHandler(uint16_t universe, ola::DmxBuffer *buffer,
46 uint8_t *priority, ola::Callback0<void> *handler);
47 bool RemoveHandler(uint16_t universe);
48
49 void RegisteredUniverses(std::vector<uint16_t> *universes);
50
51 protected:
52 virtual bool HandlePDUData(uint32_t vector,
53 const HeaderSet &headers,
54 const uint8_t *data,
55 unsigned int pdu_len);
56
57 private:
58 typedef struct {
59 ola::acn::CID cid;
60 uint8_t sequence;
61 TimeStamp last_heard_from;
62 DmxBuffer buffer;
63 } dmx_source;
64
65 typedef struct {
66 DmxBuffer *buffer;
67 Callback0<void> *closure;
68 uint8_t active_priority;
69 uint8_t *priority;
70 std::vector<dmx_source> sources;
71 } universe_handler;
72
73 typedef std::map<uint16_t, universe_handler> UniverseHandlers;
74
75 UniverseHandlers m_handlers;
76 bool m_ignore_preview;
77 ola::Clock m_clock;
78
79 bool TrackSourceIfRequired(universe_handler *universe_data,
80 const HeaderSet &headers,
81 DmxBuffer **buffer);
82
83 // The max number of sources we'll track per universe.
84 static const uint8_t MAX_MERGE_SOURCES = 6;
85 // The max merge priority.
86 static const uint8_t MAX_E131_PRIORITY = 200;
87 // ignore packets that differ by less than this amount from the last one
88 static const int8_t SEQUENCE_DIFF_THRESHOLD = -20;
89 // expire sources after 2.5s
90 static const TimeInterval EXPIRY_INTERVAL;
91};
92} // namespace acn
93} // namespace ola
94#endif // LIBS_ACN_DMPE131INFLATOR_H_
Callback.h
DmxBuffer.h
A class used to hold a single universe of DMX data.
ola::Callback0
A 0 argument callback which can be called multiple times.
Definition Callback.h:129
ola::Clock
Used to get the current time.
Definition Clock.h:230
ola::DmxBuffer
Used to hold a single universe of DMX data.
Definition DmxBuffer.h:49
ola::TimeInterval
Definition Clock.h:126
ola::TimeStamp
Definition Clock.h:179
ola::acn::CID
The ACN component identifier.
Definition CID.h:47
ola::acn::DMPE131Inflator::RegisteredUniverses
void RegisteredUniverses(std::vector< uint16_t > *universes)
Definition DMPE131Inflator.cpp:224
ola::acn::HeaderSet
Definition HeaderSet.h:35
ola::acn
ACN related code.
ola
The namespace containing all OLA symbols.
Definition Credentials.cpp:44