djiparsetxt
parseRecord_COMPONENT.cpp
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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 3 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 General Public License for more details.
11 
12 You should have received a copy of the GNU General Public License
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14 **********/
15 /*
16  A C++ program to parse DJI's ".txt" log files (recorded by the "DJI Go 4" app).
17  Version 2020-09-25
18 
19  Copyright (c) 2020 Live Networks, Inc. All rights reserved.
20  For the latest version of this program (and more information), visit http://djilogs.live555.com
21 
22  Parsing COMPONENT records within DJI ".txt" files.
23  Implementation.
24 */
25 
27 
28 void RecordAndDetailsParser::parseRecord_COMPONENT(u_int8_t const*& ptr, u_int8_t const* limit) {
29  // Because these records always seem to appear at the beginning of the file, before the
30  // first OSD record, treat each (known) component type as a separate column in the output:
31 
32  // COMPONENT.type: 2 bytes little-endian unsigned
33  u_int16_t componentType = get2BytesLE(ptr, limit);
34 
35  // Length of the following serial number: 1 byte
36  unsigned serialNumberLength = getByte(ptr, limit);
37 
38  // COMPONENT.<type>Sn: string (length "serialNumberLength"):
39  noteStringField(componentType == 1 ? "COMPONENT.cameraSn":
40  componentType == 2 ? "COMPONENT.aircraftSn":
41  componentType == 3 ? "COMPONENT.rcSn":
42  componentType == 4 ? "COMPONENT.batterySn":
43  "COMPONENT.unknownSn",
44  ptr, serialNumberLength, limit);
45 }
u_int8_t getByte(u_int8_t const *&ptr, u_int8_t const *limit)
void parseRecord_COMPONENT(u_int8_t const *&ptr, u_int8_t const *limit)
u_int16_t get2BytesLE(u_int8_t const *&ptr, u_int8_t const *limit)
void noteStringField(char const *label, u_int8_t const *&ptr, unsigned stringLength, u_int8_t const *limit)