├── requirements.txt
├── .gitignore
├── files_config.py
├── .travis.yml
├── locations.json.template
├── gpl3_header.txt
├── __init__.py
├── test_database.py
├── test_beat_data.py
├── converter.py
├── rekordbox.py
├── test_converter.py
├── traktor.py
├── main.py
├── README.md
├── copy_utils.py
├── database.py
├── beat_data.py
└── LICENSE


/requirements.txt:
--------------------------------------------------------------------------------
1 | PyQt5==5.10.1
2 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | __pycache__
2 | *pyc
3 | locations.json
4 | .idea
5 | 


--------------------------------------------------------------------------------
/files_config.py:
--------------------------------------------------------------------------------
1 | DEFAULT_PATH_FOR_JSON_FILE = "./locations.json"
2 | 
3 | KEY_REKORDBOX_PATH = "rekordbox"
4 | KEY_TRAKTOR_PATH = "traktor"
5 | KEY_ENGINE_PRIME_PATH = "engine_prime"


--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
 1 | language: python 
 2 | python:
 3 |   - 3.7
 4 | 
 5 | install: 
 6 |   - pip3 install nose2
 7 |   - pip3 install -r requirements.txt
 8 | 
 9 | notifications:
10 |   email: false
11 | 
12 | script:
13 |   - nose2 -v 
14 | 


--------------------------------------------------------------------------------
/locations.json.template:
--------------------------------------------------------------------------------
1 | {
2 |     "traktor": "/Users/YOUR_USER_NAME/Documents/Native Instruments/Traktor 3.2.0/collection.nml",
3 |     "rekordbox": "/Users/YOUR_USER_NAME/Documents/rekordbox_library.xml",
4 |     "engine_prime": "/Users/YOUR_USER_NAME/Music/Engine Library/"
5 | }
6 | 


--------------------------------------------------------------------------------
/gpl3_header.txt:
--------------------------------------------------------------------------------
 1 | PlzFixEP is an open-source helper to import data into Engine Prime
 2 | Copyright (C) <year>  <name of author>
 3 | 
 4 | This program is free software: you can redistribute it and/or modify
 5 | it under the terms of the GNU General Public License as published by
 6 | the Free Software Foundation, either version 3 of the License, or
 7 | (at your option) any later version.
 8 | 
 9 | This program is distributed in the hope that it will be useful,
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 | GNU General Public License for more details.
13 | 
14 | You should have received a copy of the GNU General Public License
15 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
16 | 


--------------------------------------------------------------------------------
/__init__.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | 


--------------------------------------------------------------------------------
/test_database.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | import unittest
20 | from database import *
21 | 
22 | _TEST_VITALIC = bytes.fromhex("00000081789c7378dad1c000048ea9553b40342303043001f1029bec3707fefc87007126a80c43c261bfda544761389f81e17f3d9c49b23e00fe93225b")
23 | 
24 | class TestDatabase(unittest.TestCase):
25 | 
26 |     def test_idenpotent(self):
27 |         self.assertEqual(
28 |             compress(bytes.fromhex(uncompress(_TEST_VITALIC))),
29 |             _TEST_VITALIC)
30 | 


--------------------------------------------------------------------------------
/test_beat_data.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | import unittest
20 | from beat_data import *
21 | 
22 | _TEST_VITALIC = "40e588800000000041657ab800000000010000000000000002000000a03c6becc0fcffffffffffffff1702000000000000000060c34e7d6541130200000000000000000000ff7f00000000000000000002000000a03c6becc0fcffffffffffffff1702000000000000000060c34e7d6541130200000000000000000000ff7f0000"
23 | 
24 | class TestBeatData(unittest.TestCase):
25 | 
26 |     def test_idenpotent(self):
27 |         self.assertEqual(
28 |             BeatData(_TEST_VITALIC).to_bytes(),
29 |             bytes.fromhex(_TEST_VITALIC))
30 | 
31 | 


--------------------------------------------------------------------------------
/converter.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | import struct
20 | import binascii
21 | 
22 | """
23 | A bunch of utils to convert binaries etc.
24 | Makes my eyes bleed
25 | """
26 | 
27 | def hex_to_bin(hex_str):
28 |     return (int(hex_str, 16)).to_bytes(len(hex_str)//2, byteorder='big')
29 | 
30 | def bin_to_double_little_endian(bin_str):
31 |     return struct.unpack('<d', bin_str)[0]
32 | def bin_to_double_big_endian(bin_str):
33 |     return struct.unpack('>d', bin_str)[0]
34 | 
35 | def bin_to_sint_little_endian(bin_str):
36 |     return struct.unpack('<i', bin_str)[0]
37 | def bin_to_sint_big_endian(bin_str):
38 |     return struct.unpack('>i', bin_str)[0]
39 | 
40 | def float_to_double_little_endian(float_val):
41 |     return struct.pack('<d', float_val)
42 | def float_to_double_big_endian(float_val):
43 |     return struct.pack('>d', float_val)
44 | 
45 | def sint_to_little_endian(sint_val):
46 |     return struct.pack('<i', sint_val)
47 | def sint_to_big_endian(sint_val):
48 |     return struct.pack('>i', sint_val)
49 | 
50 | def read_bytes_from_hexstring(string, nb_bytes):
51 |     return hex_to_bin(string[:nb_bytes*2]), string[nb_bytes*2:]
52 | 


--------------------------------------------------------------------------------
/rekordbox.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | 
20 | import xml.etree.ElementTree as ET
21 | import json
22 | import sys
23 | import os
24 | from beat_data import ExternalTrack
25 | from urllib.parse import unquote
26 | 
27 | """
28 | Traktor XML format:
29 | DJ_PLAYLISTS:
30 |    COLLECTION:
31 |       TRACK:
32 |           {Location="fullpath"}
33 |           TEMPO {Inizio="float s", Bpm}
34 | """
35 | 
36 | def get_tracks(xml_path):
37 |     xml_root = ET.parse(xml_path).getroot()
38 |     tracks = []
39 |     unparsable_entries_counter = 0
40 |     for entry in xml_root.findall("COLLECTION/TRACK"):
41 |         location = entry.attrib.get("Location")
42 |         if (entry is None or entry.find("TEMPO") is None or location is None):
43 |             # TODO: make the debug better
44 |             unparsable_entries_counter += 1
45 |             continue
46 |         bpm = entry.find("TEMPO").attrib['Bpm']
47 |         filename = unquote(os.path.basename(location))
48 | 
49 |         firstBeat = float(entry.find("TEMPO").attrib['Inizio']) * 1000
50 |         tracks.append(ExternalTrack(filename, bpm, firstBeat))
51 |     if unparsable_entries_counter:
52 |         print("Rekordbox, warning: couldn't import data for %s tracks." % unparsable_entries_counter)
53 |     return tracks
54 | 
55 | if __name__ == "__main__":
56 |     if len(sys.argv) < 2:
57 |         print("Usage: rekordbox.py [XML filepath]")
58 |     else:
59 |         path = sys.argv[1]
60 |         print(json.dumps(get_tracks(path), indent=4, default=lambda o: getattr(o, '__dict__', str(o))))
61 | 


--------------------------------------------------------------------------------
/test_converter.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | import unittest
20 | from converter import *
21 | 
22 | class TestConverter(unittest.TestCase):
23 | 
24 |     def test_hex_to_bin(self):
25 |         self.assertEqual(hex_to_bin("1A"), b'\x1a')
26 |         self.assertEqual(hex_to_bin("FF00"), b'\xff\x00')
27 | 
28 |     def test_bin_to_double(self):
29 |         self.assertEqual(bin_to_double_big_endian(hex_to_bin("40637947AE147AE1")), 155.79)
30 |         self.assertEqual(bin_to_double_big_endian(hex_to_bin("0000000000000000")), 0.0)
31 | 
32 |         self.assertEqual(bin_to_double_little_endian(hex_to_bin("E17A14AE47796340")), 155.79)
33 |         self.assertEqual(bin_to_double_little_endian(hex_to_bin("0000000000000000")), 0.0)
34 | 
35 |     def test_to_sint(self):
36 |         self.assertEqual(bin_to_sint_big_endian(hex_to_bin("FFFFFFFF")), -1)
37 |         self.assertEqual(bin_to_sint_big_endian(hex_to_bin("FFFFFF9C")), -100)
38 |         self.assertEqual(bin_to_sint_big_endian(hex_to_bin("000003E8")), 1000)
39 | 
40 |         self.assertEqual(bin_to_sint_little_endian(hex_to_bin("FFFFFFFF")), -1)
41 |         self.assertEqual(bin_to_sint_little_endian(hex_to_bin("9CFFFFFF")), -100)
42 |         self.assertEqual(bin_to_sint_little_endian(hex_to_bin("E8030000")), 1000)
43 | 
44 |     def test_bytes_from_hexstring(self):
45 |         self.assertEqual(read_bytes_from_hexstring("FF", 1), (b'\xff', ""))
46 |         self.assertEqual(read_bytes_from_hexstring("FFAA", 1), (b'\xff', "AA"))
47 |         self.assertEqual(read_bytes_from_hexstring("FFAA", 2), (b'\xff\xaa', ""))
48 |         self.assertEqual(read_bytes_from_hexstring("FFAABB", 2), (b'\xff\xaa', "BB"))
49 | 
50 | 


--------------------------------------------------------------------------------
/traktor.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | import xml.etree.ElementTree as ET
20 | import json
21 | import sys
22 | from beat_data import ExternalTrack
23 | 
24 | """
25 | Traktor XML format:
26 | COLLECTION:
27 |    ENTRY:
28 |       TEMPO {BPM="119.999985" BPM_QUALITY="100.000000"}
29 |       LOCATION {DIR="/:Users/:16pierre/:MSI/:", FILE="..."}
30 |       CUE_V2 {NAME="AutoGrid/Beat Marker", START="float ms"}
31 | """
32 | 
33 | def get_tracks(nml_path):
34 |     xml_root = ET.parse(nml_path).getroot()
35 |     tracks = []
36 |     unparsable_entries_counter = 0
37 |     for entry in xml_root.findall("COLLECTION/ENTRY"):
38 |         if (entry is None or entry.find("TEMPO") is None or entry.find("CUE_V2") is None):
39 |             # TODO: make the debug better
40 |             unparsable_entries_counter += 1
41 |             continue
42 |         bpm = entry.find("TEMPO").attrib['BPM']
43 |         location = entry.find("LOCATION")
44 |         filename = location.attrib['FILE']
45 | 
46 |         firstBeat = 0
47 |         for cue in entry.findall("CUE_V2"):
48 |             if cue.attrib['NAME'] in ['AutoGrid', 'Beat Marker']:
49 |                 firstBeat = cue.attrib['START']
50 | 
51 |         tracks.append(ExternalTrack(filename, bpm, firstBeat))
52 |     if unparsable_entries_counter:
53 |         print("Traktor, warning: couldn't import data for %s tracks." % unparsable_entries_counter)
54 |     return tracks
55 | 
56 | if __name__ == "__main__":
57 |     if len(sys.argv) < 2:
58 |         print("Usage: traktor.py [NML filepath]")
59 |     else:
60 |         path = sys.argv[1]
61 |         print(json.dumps(get_tracks(path), indent=4, default=lambda o: getattr(o, '__dict__', str(o))))
62 | 


--------------------------------------------------------------------------------
/main.py:
--------------------------------------------------------------------------------
 1 | """
 2 | PlzFixEP is an open-source helper to import data into Engine Prime
 3 | Copyright (C) 2020  Quentin PIERRE
 4 | 
 5 | This program is free software: you can redistribute it and/or modify
 6 | it under the terms of the GNU General Public License as published by
 7 | the Free Software Foundation, either version 3 of the License, or
 8 | (at your option) any later version.
 9 | 
10 | This program is distributed in the hope that it will be useful,
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 | GNU General Public License for more details.
14 | 
15 | You should have received a copy of the GNU General Public License
16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
17 | """
18 | 
19 | import database
20 | import traktor
21 | import rekordbox
22 | import sys
23 | import json
24 | import os
25 | from files_config import KEY_REKORDBOX_PATH, KEY_TRAKTOR_PATH, KEY_ENGINE_PRIME_PATH, DEFAULT_PATH_FOR_JSON_FILE
26 | 
27 | if __name__ == "__main__":
28 | 
29 |     if len(sys.argv) < 2 or sys.argv[1] not in ["rekordbox", "traktor"]:
30 |         print("Usage: python3 main.py [required: rekordbox|traktor] [optional: 'json path']")
31 |         exit(1)
32 | 
33 |     if len(sys.argv) < 3:
34 |         config_path = DEFAULT_PATH_FOR_JSON_FILE
35 |     else:
36 |         config_path = sys.argv[1]
37 | 
38 |     with open(config_path) as json_file:
39 |         config = json.load(json_file)
40 | 
41 |     soft = sys.argv[1]
42 |     if not config.get(KEY_ENGINE_PRIME_PATH):
43 |         print("Missing %s path in %s" % (KEY_ENGINE_PRIME_PATH, config_path))
44 |         exit(1)
45 |     if soft == "traktor" and not config.get(KEY_TRAKTOR_PATH):
46 |         print("Missing %s path in %s" % (KEY_TRAKTOR_PATH, config_path))
47 |         exit(1)
48 |     if soft == "rekordbox" and not config.get(KEY_REKORDBOX_PATH):
49 |         print("Missing %s path in %s" % (KEY_REKORDBOX_PATH, config_path))
50 |         exit(1)
51 |     
52 |     EP_MASTER_DB = os.path.join(config.get(KEY_ENGINE_PRIME_PATH), "m.db")
53 |     EP_PERF_DB = os.path.join(config.get(KEY_ENGINE_PRIME_PATH), "p.db")
54 | 
55 |     if soft == "traktor":
56 |         tracks_in_traktor = traktor.get_tracks(config.get(KEY_TRAKTOR_PATH))
57 |     else:
58 |         tracks_in_traktor = rekordbox.get_tracks(config.get(KEY_REKORDBOX_PATH))
59 | 
60 |     filename_to_id_dict = database.get_track_filename_to_id_dict(EP_MASTER_DB)
61 |     print("Number of tracks found in %s: %s" % (soft, len(tracks_in_traktor)))
62 |     print("Number of tracks found in Engine Prime: %s" % len(filename_to_id_dict))
63 |     common_tracks = [t for t in tracks_in_traktor if t.filename in filename_to_id_dict]
64 |     print("Number of tracks in Engine Prime && %s: %s" % (soft, len(common_tracks)))
65 | 
66 |     print("Fetching beat datas from Engine Prime...")
67 |     beat_datas = database.get_all_beat_data(EP_PERF_DB, EP_MASTER_DB)
68 | 
69 |     print("Writing data to Engine Prime...")
70 |     engine_id_to_traktor_track = {}
71 | 
72 |     beat_datas_by_id = {}
73 |     for beat_data in beat_datas:
74 |         beat_datas_by_id[beat_data.id] = beat_data
75 | 
76 |     for traktor_track in common_tracks:
77 |         if filename_to_id_dict[traktor_track.filename] in beat_datas_by_id:
78 |             engine_id_to_traktor_track[filename_to_id_dict[traktor_track.filename]] = traktor_track
79 | 
80 | 
81 |     for track_id, traktor_track in engine_id_to_traktor_track.items():
82 |         beat_datas_by_id[track_id].override_with_external(traktor_track)
83 | 
84 |     database.update_beat_database(EP_PERF_DB, beat_datas_by_id.values())
85 |     print("Done !")
86 | 
87 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Overview
 2 | 
 3 | Denon sells nice hardware, but not so great software... Denon's Engine Prime (EP) still has a lot to improve when it comes to beat detection and beat grid.
 4 | 
 5 | Although EP allows you to import from Serator, Rekordbox or Traktor libraries, the beat grids get erased... Pretty annoying.
 6 | 
 7 | `PlzFixEP` is an open-source project which goal is to provide utils to export beat grids to Engine Prime.
 8 | 
 9 | Supported imports:
10 | - Traktor -> Engine Prime
11 | - Rekordbox -> Engine Prime
12 | 
13 | # Usage
14 | 
15 | First of all, BACKUP your Engine Prime files ! (Location: Music/Engine Library)
16 | 
17 | 0. See [installation](#installation)
18 | 1. Import your tracks normally in Engine Prime.
19 | 2. Analyse them in Engine Prime.
20 | 3. Close Engine Prime
21 | 4. Run the `main.py` script:
22 | ```
23 | # Rekordbox -> Engine Prime
24 | python3 main.py rekordbox
25 | # Traktor -> Engine Prime
26 | python3 main.py traktor
27 | 
28 | # Advanced: specify the locations.json path:
29 | python3 main.py traktor /home/my_user_name/some_custom_file.json
30 | ```
31 | 
32 | 5. Re-open Engine Prime. Should be good to go
33 | 
34 | # Installation
35 | - install python3
36 | - install the required packages:
37 | ```
38 | pip3 install -r requirements.txt
39 | ```
40 | - create a `locations.json` file. It should look like:
41 | 
42 | ```
43 | {
44 |     "traktor": "SOME_PATH/collection.nml",
45 |     "rekordbox": "SOME_PATH/rekordbox_library.xml",
46 |     "engine_prime": "SOME_PATH/Engine Library/"
47 | }
48 | ```
49 | (see locations.json.template)
50 | 
51 | Note: you can ignore `traktor` or `rekordbox` if you're not using one of them.
52 | 
53 | # Notes
54 | 
55 | ## Exporting rekordbox collection to xml
56 | 
57 | Go to rekordbox, click `file-> Export collection to xml format`.
58 | 
59 | 
60 | # Contributing
61 | 
62 | You're very welcome to contribute if you want to pull request improvements / bugfixes, there's still a lot to do ;)
63 | 
64 | Here's a few quick tips to get started:
65 | - Engine Prime uses SQLite, and the database files are located in `~/Music/Engine Library/`.
66 | - `m.db` contains the overall information on your library (track lists etc.)
67 | - `p.db` contains an interesting table for this project: `PerformanceData`, which itself has a column `beatData`. That's where the beat information is stored, and that's a binary that required quite a bit of reverse-engineering.
68 | - Engine Prime uses a very weird serialization for `beatData` (see `beat_data.py`); EP stores a bunch of `BeatAnchors`, which are used to define the beat grid & BPM.
69 | - Engine Prime tends to write to its databases upon being closed.
70 | 
71 | At this point, there's still a few unknowns in `beat_data.py`. Feel free to explore and offer smarter interpretations `beatData`'s binary representation.
72 | 
73 | # Credits & Licensing
74 | 
75 | Original author: Quentin PIERRE (student at Mines Paristech)
76 | 
77 | PlzFixEP is an open-source helper to import data into Engine Prime
78 | Copyright (C) 2020  Quentin PIERRE
79 | 
80 | This program is free software: you can redistribute it and/or modify
81 | it under the terms of the GNU General Public License as published by
82 | the Free Software Foundation, either version 3 of the License, or
83 | (at your option) any later version.
84 | 
85 | This program is distributed in the hope that it will be useful,
86 | but WITHOUT ANY WARRANTY; without even the implied warranty of
87 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
88 | GNU General Public License for more details.
89 | 
90 | You should have received a copy of the GNU General Public License
91 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
92 | 
93 | ## Thanks
94 | 
95 | I used `Ghidra` quite intensively to reverse engineer EP.
96 | That's a great piece of software, do check it out ;)
97 | 
98 | Ghidra homepage: https://ghidra-sre.org/
99 | 


--------------------------------------------------------------------------------
/copy_utils.py:
--------------------------------------------------------------------------------
  1 | """
  2 | PlzFixEP is an open-source helper to import data into Engine Prime
  3 | Copyright (C) 2020  Quentin PIERRE
  4 | 
  5 | This program is free software: you can redistribute it and/or modify
  6 | it under the terms of the GNU General Public License as published by
  7 | the Free Software Foundation, either version 3 of the License, or
  8 | (at your option) any later version.
  9 | 
 10 | This program is distributed in the hope that it will be useful,
 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 | GNU General Public License for more details.
 14 | 
 15 | You should have received a copy of the GNU General Public License
 16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
 17 | 
 18 | 
 19 | This script syncs tracks to a USB drive.
 20 | My EP is broken: I can't drag and drop playlists or tracks to a flashdrive...
 21 | """
 22 | 
 23 | import os
 24 | import sys
 25 | import json
 26 | import threading
 27 | import multiprocessing
 28 | from pathlib import Path
 29 | from shutil import copy
 30 | 
 31 | import database
 32 | from files_config import KEY_REKORDBOX_PATH, KEY_TRAKTOR_PATH, KEY_ENGINE_PRIME_PATH, DEFAULT_PATH_FOR_JSON_FILE
 33 | 
 34 | def get_files(path):
 35 |     """
 36 |     Walks files in the specified directory
 37 |     """
 38 | 
 39 |     files = []
 40 |     if os.path.isdir(path):
 41 |         for r, d, fs in os.walk(os.path.dirname(path)):
 42 |             files.extend([os.path.join(r, f) for f in fs])
 43 |         return files
 44 |     else:
 45 |         raise Exception("%s is not a folder" % path)
 46 | 
 47 | def copy_files(sources, dests, override=False):
 48 |     for i in range(len(sources)):
 49 |         Path(dests[i]).parent.mkdir(parents=True, exist_ok=True)
 50 |         if not override and Path(dests[i]).exists():
 51 |             print("Skipping copy %s to %s, already exists" % (sources[i], dests[i]))
 52 |             continue
 53 | 
 54 |         if Path(dests[i]).exists():
 55 |             print("Copying %s to %s (overwrite)" % (sources[i], dests[i]))
 56 |             os.remove(dests[i])
 57 |         else:
 58 |             print("Copying %s to %s (new)" % (sources[i], dests[i]))
 59 | 
 60 |         copy(sources[i], dests[i])
 61 | 
 62 | def chunks(sources, dests, n):
 63 |     for i in range(0, len(sources), n):
 64 |         yield sources[i:i + n], dests[i:i + n]
 65 | 
 66 | def multi_thread_copy_files(sources, dests, nb_threads, override=False):
 67 | 
 68 |     if len(sources) < nb_threads:
 69 |         copy_files(sources, dests)
 70 |         return
 71 | 
 72 |     chunk_size = int(len(sources) / nb_threads)
 73 |     threads = []
 74 |     for chunked_sources, chunked_dests in chunks(sources, dests, chunk_size):
 75 |         t = threading.Thread(target=copy_files, args=(chunked_sources, chunked_dests, override))
 76 |         t.daemon = True
 77 |         t.start()
 78 |         threads.append(t)
 79 | 
 80 |     for t in threads:
 81 |         t.join()
 82 | 
 83 | 
 84 | def sources_to_targets(base_dir, target_dir, sources):
 85 |     return [str(Path(target_dir).joinpath(Path(s).relative_to(base_dir)).resolve().absolute()) for s in sources]
 86 | 
 87 | def sources_to_flattened_targets(target_dir, sources):
 88 |     return [str(Path(target_dir).joinpath(Path(s).name).resolve().absolute()) for s in sources]
 89 | 
 90 | if __name__ == "__main__":
 91 | 
 92 |     if len(sys.argv) < 2:
 93 |         raise Exception("Usage: python3 copy_utils.py /path_your_flash_drive")
 94 | 
 95 |     """
 96 |     By default, flash drive structure looks like:
 97 |     /flash_drive/Engine Library/*.db
 98 |     /flash_drive/Engine Library/Music/{Artist}/{Album}/{TRACK}
 99 |     
100 |     We can override the music paths though: we'll use a flattened music directory here
101 |     """
102 |     flash_drive_root = sys.argv[1]
103 |     flash_drive_ep_root = os.path.join(flash_drive_root, "Engine Library")
104 |     flash_drive_music_dir = os.path.join(flash_drive_ep_root, "Music")
105 | 
106 |     config_path = DEFAULT_PATH_FOR_JSON_FILE
107 |     with open(config_path) as json_file:
108 |         config = json.load(json_file)
109 | 
110 |     if not config.get(KEY_ENGINE_PRIME_PATH):
111 |         print("Missing %s path in %s" % (KEY_ENGINE_PRIME_PATH, config_path))
112 |         exit(1)
113 |     ep_root = config.get(KEY_ENGINE_PRIME_PATH)
114 | 
115 |     database_files = get_files(ep_root)
116 |     copy_files(database_files, sources_to_targets(ep_root, flash_drive_ep_root, database_files), override=True)
117 | 
118 |     ep_master_db = os.path.join(ep_root, "m.db")
119 |     flash_drive_ep_master_db = os.path.join(flash_drive_ep_root, "m.db")
120 | 
121 |     tracks_to_id = database.get_track_absolute_filepaths_to_id_dict(ep_master_db)
122 |     tracks_to_id = database.cleanup_missing_tracks_from_db_and_return_valid_tracks(flash_drive_ep_master_db, tracks_to_id)
123 | 
124 |     music_sources = list(tracks_to_id.keys())
125 |     music_absolute_targets = sources_to_flattened_targets(flash_drive_music_dir, music_sources)
126 |     music_relative_targets = [str(Path(m).relative_to(flash_drive_ep_root)) for m in music_absolute_targets]
127 | 
128 |     id_to_new_music_paths = dict()
129 |     for i in range(len(music_sources)):
130 |         id_to_new_music_paths[tracks_to_id[music_sources[i]]] = music_relative_targets[i]
131 | 
132 |     tracks = list(id_to_new_music_paths.values())
133 |     for i in range(len(tracks)):
134 |         for j in range(i+1, len(tracks)):
135 |             if tracks[i] == tracks[j]:
136 |                 print("duplicate: %s" % tracks[i])
137 | 
138 |     database.override_music_paths(flash_drive_ep_master_db, id_to_new_music_paths)
139 | 
140 |     multi_thread_copy_files(music_sources, music_absolute_targets, multiprocessing.cpu_count(), override=False)
141 |     print("Done !")
142 | 


--------------------------------------------------------------------------------
/database.py:
--------------------------------------------------------------------------------
  1 | """
  2 | PlzFixEP is an open-source helper to import data into Engine Prime
  3 | Copyright (C) 2020  Quentin PIERRE
  4 | 
  5 | This program is free software: you can redistribute it and/or modify
  6 | it under the terms of the GNU General Public License as published by
  7 | the Free Software Foundation, either version 3 of the License, or
  8 | (at your option) any later version.
  9 | 
 10 | This program is distributed in the hope that it will be useful,
 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 | GNU General Public License for more details.
 14 | 
 15 | You should have received a copy of the GNU General Public License
 16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
 17 | """
 18 | 
 19 | 
 20 | import sqlite3
 21 | import json
 22 | import PyQt5.QtCore as qtcore
 23 | from beat_data import BeatData
 24 | from pathlib import Path
 25 | 
 26 | NAME_TABLE_PERFORMANCE_DATA = "PerformanceData"
 27 | NAME_TABLE_TRACK = "Track"
 28 | NAME_COL_ID = "id"
 29 | NAME_COL_BEAT_DATA = "beatData"
 30 | NAME_COL_FILENAME = "filename"
 31 | NAME_COL_PATH = "path"
 32 | 
 33 | def get_all_beat_data(path_performance_db, path_master_db):
 34 |     perf_conn = sqlite3.connect(path_performance_db)
 35 |     perf_c    = perf_conn.cursor()
 36 | 
 37 |     results = []
 38 | 
 39 |     query_str = "SELECT %s,%s FROM %s" % (NAME_COL_ID, NAME_COL_BEAT_DATA, NAME_TABLE_PERFORMANCE_DATA)
 40 |     error_count = 0
 41 |     not_analysed_tracks = []
 42 |     for row in perf_c.execute(query_str):
 43 |         try:
 44 |             if not row[1]:
 45 |                 not_analysed_tracks.append(row[0])
 46 |             else:
 47 |                 results.append(BeatData(uncompress(row[1]), row[0]))
 48 |         except Exception:
 49 |             error_count += 1
 50 |     if error_count:
 51 |         print("Database: Number of corrupted tracks: %s" % error_count)
 52 |     perf_conn.close()
 53 |     if not_analysed_tracks:
 54 |         print("The following tracks were not analysed by Engine Prime and therefore skipped:")
 55 |         id_to_filename_dict = get_track_id_to_filename_dict(path_master_db)
 56 |         for track_id in not_analysed_tracks:
 57 |             if track_id in id_to_filename_dict:
 58 |                 print("- %s" % id_to_filename_dict[track_id])
 59 |         print("Total number of tracks not analysed: %d" % len(not_analysed_tracks))
 60 |     print("Tracks correctly loaded from Engine Prime: %d" % len(results))
 61 |     return results
 62 | 
 63 | # TODO: use file path instead of name here, more robust; need more conversion to link with traktor data etc. though
 64 | def get_track_filename_to_id_dict(path_master_db):
 65 |     master_conn = sqlite3.connect(path_master_db)
 66 |     master_c    = master_conn.cursor()
 67 | 
 68 |     results = {}
 69 | 
 70 |     query_str = "SELECT %s,%s FROM %s" % (NAME_COL_ID, NAME_COL_FILENAME, NAME_TABLE_TRACK)
 71 |     for row in master_c.execute(query_str):
 72 |         results[row[1]] = row[0]
 73 |     master_conn.close()
 74 |     return results
 75 | 
 76 | def relative_path_to_absolute_path(path_master_db, relative_path):
 77 |     m_path = Path(path_master_db)
 78 |     # relative paths in m.db are based on EP's database directory
 79 |     return str(m_path.parent.joinpath(relative_path).resolve().absolute())
 80 | 
 81 | def get_track_absolute_filepaths_to_id_dict(path_master_db):
 82 |     master_conn = sqlite3.connect(path_master_db)
 83 |     master_c    = master_conn.cursor()
 84 | 
 85 |     results = {}
 86 | 
 87 |     query_str = "SELECT %s,%s FROM %s" % (NAME_COL_ID, NAME_COL_PATH, NAME_TABLE_TRACK)
 88 |     for row in master_c.execute(query_str):
 89 |         if row[1]:
 90 |             # TODO: fix sqlite3.IntegrityError: UNIQUE constraint failed: Track.path
 91 |             results[relative_path_to_absolute_path(path_master_db, row[1])] = row[0]
 92 |     master_conn.close()
 93 |     return results
 94 | 
 95 | def override_music_paths(path_master_db, id_to_paths):
 96 |     master_conn = sqlite3.connect(path_master_db)
 97 |     master_c    = master_conn.cursor()
 98 |     query_str = "UPDATE %s SET %s=? WHERE %s=?" % (NAME_TABLE_TRACK, NAME_COL_PATH, NAME_COL_ID)
 99 |     for i in id_to_paths.keys():
100 |         master_c.execute(query_str, (id_to_paths[i], i))
101 |     master_conn.commit()
102 |     master_conn.close()
103 | 
104 | def delete_from_db(path_master_db, track_ids):
105 |     master_conn = sqlite3.connect(path_master_db)
106 |     master_c    = master_conn.cursor()
107 |     query_str = "DELETE FROM %s WHERE %s=?" % (NAME_TABLE_TRACK, NAME_COL_ID)
108 |     for i in track_ids:
109 |         master_c.execute(query_str, (i, ))
110 |     master_conn.commit()
111 |     master_conn.close()
112 | 
113 | def cleanup_missing_tracks_from_db_and_return_valid_tracks(path_master_db, path_to_ids):
114 |     valid_tracks = dict()
115 |     ids_to_be_removed = list()
116 |     for p in path_to_ids:
117 |         if not Path(p).is_absolute():
118 |             p2 = relative_path_to_absolute_path(path_master_db, p)
119 |         else:
120 |             p2 = p
121 |         if not Path(p2).exists():
122 |             ids_to_be_removed.append(path_to_ids[p])
123 |         else:
124 |             valid_tracks[p] = path_to_ids[p]
125 |     if ids_to_be_removed:
126 |         delete_from_db(path_master_db, ids_to_be_removed)
127 | 
128 |         print("Found %s missing files in databases, deleted them from database" % len(ids_to_be_removed))
129 |     return valid_tracks
130 | 
131 | def get_track_id_to_filename_dict(path_master_db):
132 |     return {v: k for k, v in get_track_filename_to_id_dict(path_master_db).items()}
133 | 
134 | def update_beat_database(path_performance_db, beat_datas):
135 |     perf_conn = sqlite3.connect(path_performance_db)
136 |     perf_c    = perf_conn.cursor()
137 | 
138 |     for beat_data in beat_datas:
139 |         query_str = "UPDATE %s SET %s=? WHERE %s=?" % (NAME_TABLE_PERFORMANCE_DATA, NAME_COL_BEAT_DATA, NAME_COL_ID)
140 |         perf_c.execute(query_str, (compress(beat_data.to_bytes()), beat_data.id))
141 |     perf_conn.commit()
142 |     perf_conn.close()
143 | 
144 | def uncompress(raw_beat_data_from_db):
145 |     uncompressed = qtcore.QByteArray()
146 |     uncompressed = uncompressed.append(raw_beat_data_from_db)
147 |     uncompressed = qtcore.qUncompress(uncompressed)
148 |     return uncompressed.toHex().data().decode('ascii')
149 | 
150 | def compress(bytes_data):
151 |     compressed = qtcore.QByteArray()
152 |     compressed = compressed.append(bytes_data)
153 |     compressed = qtcore.qCompress(compressed)
154 |     return compressed.data()
155 | 
156 | if __name__ == "__main__":
157 |     DEFAULT_PATH_PERFORMANCE_DB = "~/Music/Engine Library/p.db"
158 |     DEFAULT_PATH_MASTER_DB = "~/Music/Engine Library/m.db"
159 |     for b in get_all_beat_data(DEFAULT_PATH_PERFORMANCE_DB, DEFAULT_PATH_MASTER_DB):
160 |         if (len(b.custom_anchors)) > 2:
161 |             print(json.dumps(b, indent=4, default=lambda o: getattr(o, '__dict__', str(o))))
162 | 
163 |     print(get_track_filename_to_id_dict(DEFAULT_PATH_MASTER_DB))
164 | 
165 | 


--------------------------------------------------------------------------------
/beat_data.py:
--------------------------------------------------------------------------------
  1 | """
  2 | PlzFixEP is an open-source helper to import data into Engine Prime
  3 | Copyright (C) 2020  Quentin PIERRE
  4 | 
  5 | This program is free software: you can redistribute it and/or modify
  6 | it under the terms of the GNU General Public License as published by
  7 | the Free Software Foundation, either version 3 of the License, or
  8 | (at your option) any later version.
  9 | 
 10 | This program is distributed in the hope that it will be useful,
 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 | GNU General Public License for more details.
 14 | 
 15 | You should have received a copy of the GNU General Public License
 16 | along with this program.  If not, see <https://www.gnu.org/licenses/>.
 17 | """
 18 | 
 19 | 
 20 | import converter as co
 21 | import json
 22 | 
 23 | class ExternalTrack:
 24 |     def __init__(self, filename, bpm, firstDownBeatMs):
 25 |         self.filename = filename
 26 |         self.bpm = float(bpm)
 27 |         self.firstDownBeatMs = float(firstDownBeatMs)
 28 | 
 29 | class BeatData:
 30 | 
 31 |     def __init__(self, string, id=0):
 32 |         self.anchors = []
 33 |         self.custom_anchors = []
 34 | 
 35 |         sample_rate, string           = co.read_bytes_from_hexstring(string, 8)
 36 |         sample_length, string         = co.read_bytes_from_hexstring(string, 8)
 37 |         unknown, string               = co.read_bytes_from_hexstring(string, 1)
 38 |         # -> Always 0x01
 39 |         unknown_bytes, string         = co.read_bytes_from_hexstring(string, 4)
 40 |         # -> Always 0x00000000
 41 |         nb_anchors_reset, string      = co.read_bytes_from_hexstring(string, 4)
 42 |         nb_anchors_reset              = co.bin_to_sint_big_endian(nb_anchors_reset)
 43 | 
 44 |         for i in range(nb_anchors_reset):
 45 |             anchor, string = BeatAnchor.read_anchor(string)
 46 |             self.anchors.append(anchor)
 47 | 
 48 |         unknown_bytes2, string        = co.read_bytes_from_hexstring(string, 4)
 49 |         # -> Always 0x00000000
 50 |         nb_anchors_custom, string     = co.read_bytes_from_hexstring(string, 4)
 51 |         nb_anchors_custom             = co.bin_to_sint_big_endian(nb_anchors_custom)
 52 | 
 53 |         for i in range(nb_anchors_custom):
 54 |             anchor, string = BeatAnchor.read_anchor(string)
 55 |             self.custom_anchors.append(anchor)
 56 | 
 57 |         self.sample_rate              = co.bin_to_double_big_endian(sample_rate)
 58 |         self.sample_length            = co.bin_to_double_big_endian(sample_length)
 59 |         self.unknown = unknown
 60 |         self.unknown_bytes = unknown_bytes
 61 |         self.unknown_bytes2 = unknown_bytes2
 62 |         self.id = id
 63 | 
 64 |     def to_bytes(self):
 65 |         hex_bytes  = co.float_to_double_big_endian(self.sample_rate)
 66 |         hex_bytes += co.float_to_double_big_endian(self.sample_length)
 67 |         hex_bytes += b'\x01'
 68 |         hex_bytes += b'\x00\x00\x00\x00'
 69 |         hex_bytes += co.sint_to_big_endian(len(self.anchors))
 70 |         for anchor in self.anchors:
 71 |             hex_bytes += anchor.to_bytes()
 72 |         hex_bytes += b'\x00\x00\x00\x00'
 73 |         hex_bytes += co.sint_to_big_endian(len(self.custom_anchors))
 74 |         for anchor in self.custom_anchors:
 75 |             hex_bytes += anchor.to_bytes()
 76 |         return hex_bytes
 77 | 
 78 |     def override_with_external(self, external_track):
 79 |         central_sample = external_track.firstDownBeatMs / 1000.0 * self.sample_rate
 80 |         first_sample = central_sample
 81 |         samples_per_bar = 4.0 * self.sample_rate / external_track.bpm * 60.0
 82 |         beats_between_start_and_central = 0
 83 |         while(first_sample > 0):
 84 |             first_sample -= samples_per_bar
 85 |             beats_between_start_and_central += 4
 86 | 
 87 |         end_sample = central_sample
 88 |         beats_between_central_and_end = 0
 89 |         while(end_sample < self.sample_length):
 90 |             end_sample += samples_per_bar
 91 |             beats_between_central_and_end += 4
 92 |         
 93 |         central_anchor = BeatAnchor(central_sample, 0, 0, beats_between_central_and_end, 24576)
 94 |         first_anchor = BeatAnchor(first_sample, -beats_between_start_and_central, -1, beats_between_start_and_central, 0)
 95 |         last_anchor = BeatAnchor(end_sample, beats_between_central_and_end, 0, beats_between_central_and_end, 32767)
 96 |         self.custom_anchors = [first_anchor, central_anchor, last_anchor]
 97 | 
 98 |     def export_to_external_track(self):
 99 |         samples_per_beat = (self.custom_anchors[1].bits_to_anchor - self.custom_anchors[0].bits_to_anchor) / float(self.custom_anchors[0].beats_to_next_anchor)
100 |         bpm = self.sample_rate / samples_per_beat * 60
101 |         first_real_beat = self.custom_anchors[0].bits_to_anchor
102 |         while first_real_beat < 0:
103 |             first_real_beat += 4.0 * samples_per_beat
104 |         return ExternalTrack("dummy", bpm, first_real_beat / self.sample_rate * 1000.0)
105 | 
106 | class BeatAnchor:
107 | 
108 |     def __init__(self, bits_to_anchor, beats_to_anchor, phase, beats_to_next_anchor, unknown2):
109 |         self.bits_to_anchor = bits_to_anchor
110 |         self.beats_to_anchor = beats_to_anchor
111 |         self.phase = phase
112 |         self.beats_to_next_anchor = beats_to_next_anchor
113 |         self.unknown2 = unknown2
114 | 
115 |     @staticmethod
116 |     def read_anchor(string):
117 |         bits_to_anchor, string  = co.read_bytes_from_hexstring(string, 8)
118 |         beats_to_anchor, string = co.read_bytes_from_hexstring(string, 4)
119 |         phase, string           = co.read_bytes_from_hexstring(string, 4)
120 |         beats_to_next_anchor, string        = co.read_bytes_from_hexstring(string, 4)
121 |         unknown2, string        = co.read_bytes_from_hexstring(string, 4)
122 | 
123 |         bits_to_anchor = co.bin_to_double_little_endian(bits_to_anchor)
124 |         beats_to_anchor = co.bin_to_sint_little_endian(beats_to_anchor)
125 |         phase = co.bin_to_sint_little_endian(phase)
126 |         beats_to_next_anchor = co.bin_to_sint_little_endian(beats_to_next_anchor)
127 |         unknown2 = co.bin_to_sint_little_endian(unknown2)
128 |         # always 0 for first anchor
129 |         # always 32767 for second anchor if n_anchors = 2
130 |         # always 24576 for second/third anchor if n_anchors = 3
131 | 
132 |         return BeatAnchor(bits_to_anchor, beats_to_anchor, phase, beats_to_next_anchor, unknown2), string
133 | 
134 |     def to_bytes(self):
135 |         hex_bytes  = co.float_to_double_little_endian(self.bits_to_anchor)
136 |         hex_bytes += co.sint_to_little_endian(self.beats_to_anchor)
137 |         hex_bytes += co.sint_to_little_endian(self.phase)
138 |         hex_bytes += co.sint_to_little_endian(self.beats_to_next_anchor)
139 |         hex_bytes += co.sint_to_little_endian(self.unknown2)
140 |         # TODO: Fix unknown with 0, 24576 etc. ?
141 |         return hex_bytes
142 | 
143 | # Debug utils
144 | if __name__ == "__main__":
145 |     user_string = input()
146 |     data = BeatData(user_string)
147 |     print("====== ORIGINAL =====")
148 |     print(json.dumps(data, indent=4, default=lambda o: getattr(o, '__dict__', str(o))))
149 |     print("====== MODIFIED 1 =====")
150 |     data.override_with_external(data.export_to_external_track())
151 |     print(json.dumps(data, indent=4, default=lambda o: getattr(o, '__dict__', str(o))))
152 |     print("====== MODIFIED 2 =====")
153 |     data.override_with_external(data.export_to_external_track())
154 |     print(json.dumps(data, indent=4, default=lambda o: getattr(o, '__dict__', str(o))))
155 | 
156 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
  1 |                     GNU GENERAL PUBLIC LICENSE
  2 |                        Version 3, 29 June 2007
  3 | 
  4 |  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  5 |  Everyone is permitted to copy and distribute verbatim copies
  6 |  of this license document, but changing it is not allowed.
  7 | 
  8 |                             Preamble
  9 | 
 10 |   The GNU General Public License is a free, copyleft license for
 11 | software and other kinds of works.
 12 | 
 13 |   The licenses for most software and other practical works are designed
 14 | to take away your freedom to share and change the works.  By contrast,
 15 | the GNU General Public License is intended to guarantee your freedom to
 16 | share and change all versions of a program--to make sure it remains free
 17 | software for all its users.  We, the Free Software Foundation, use the
 18 | GNU General Public License for most of our software; it applies also to
 19 | any other work released this way by its authors.  You can apply it to
 20 | your programs, too.
 21 | 
 22 |   When we speak of free software, we are referring to freedom, not
 23 | price.  Our General Public Licenses are designed to make sure that you
 24 | have the freedom to distribute copies of free software (and charge for
 25 | them if you wish), that you receive source code or can get it if you
 26 | want it, that you can change the software or use pieces of it in new
 27 | free programs, and that you know you can do these things.
 28 | 
 29 |   To protect your rights, we need to prevent others from denying you
 30 | these rights or asking you to surrender the rights.  Therefore, you have
 31 | certain responsibilities if you distribute copies of the software, or if
 32 | you modify it: responsibilities to respect the freedom of others.
 33 | 
 34 |   For example, if you distribute copies of such a program, whether
 35 | gratis or for a fee, you must pass on to the recipients the same
 36 | freedoms that you received.  You must make sure that they, too, receive
 37 | or can get the source code.  And you must show them these terms so they
 38 | know their rights.
 39 | 
 40 |   Developers that use the GNU GPL protect your rights with two steps:
 41 | (1) assert copyright on the software, and (2) offer you this License
 42 | giving you legal permission to copy, distribute and/or modify it.
 43 | 
 44 |   For the developers' and authors' protection, the GPL clearly explains
 45 | that there is no warranty for this free software.  For both users' and
 46 | authors' sake, the GPL requires that modified versions be marked as
 47 | changed, so that their problems will not be attributed erroneously to
 48 | authors of previous versions.
 49 | 
 50 |   Some devices are designed to deny users access to install or run
 51 | modified versions of the software inside them, although the manufacturer
 52 | can do so.  This is fundamentally incompatible with the aim of
 53 | protecting users' freedom to change the software.  The systematic
 54 | pattern of such abuse occurs in the area of products for individuals to
 55 | use, which is precisely where it is most unacceptable.  Therefore, we
 56 | have designed this version of the GPL to prohibit the practice for those
 57 | products.  If such problems arise substantially in other domains, we
 58 | stand ready to extend this provision to those domains in future versions
 59 | of the GPL, as needed to protect the freedom of users.
 60 | 
 61 |   Finally, every program is threatened constantly by software patents.
 62 | States should not allow patents to restrict development and use of
 63 | software on general-purpose computers, but in those that do, we wish to
 64 | avoid the special danger that patents applied to a free program could
 65 | make it effectively proprietary.  To prevent this, the GPL assures that
 66 | patents cannot be used to render the program non-free.
 67 | 
 68 |   The precise terms and conditions for copying, distribution and
 69 | modification follow.
 70 | 
 71 |                        TERMS AND CONDITIONS
 72 | 
 73 |   0. Definitions.
 74 | 
 75 |   "This License" refers to version 3 of the GNU General Public License.
 76 | 
 77 |   "Copyright" also means copyright-like laws that apply to other kinds of
 78 | works, such as semiconductor masks.
 79 | 
 80 |   "The Program" refers to any copyrightable work licensed under this
 81 | License.  Each licensee is addressed as "you".  "Licensees" and
 82 | "recipients" may be individuals or organizations.
 83 | 
 84 |   To "modify" a work means to copy from or adapt all or part of the work
 85 | in a fashion requiring copyright permission, other than the making of an
 86 | exact copy.  The resulting work is called a "modified version" of the
 87 | earlier work or a work "based on" the earlier work.
 88 | 
 89 |   A "covered work" means either the unmodified Program or a work based
 90 | on the Program.
 91 | 
 92 |   To "propagate" a work means to do anything with it that, without
 93 | permission, would make you directly or secondarily liable for
 94 | infringement under applicable copyright law, except executing it on a
 95 | computer or modifying a private copy.  Propagation includes copying,
 96 | distribution (with or without modification), making available to the
 97 | public, and in some countries other activities as well.
 98 | 
 99 |   To "convey" a work means any kind of propagation that enables other
100 | parties to make or receive copies.  Mere interaction with a user through
101 | a computer network, with no transfer of a copy, is not conveying.
102 | 
103 |   An interactive user interface displays "Appropriate Legal Notices"
104 | to the extent that it includes a convenient and prominently visible
105 | feature that (1) displays an appropriate copyright notice, and (2)
106 | tells the user that there is no warranty for the work (except to the
107 | extent that warranties are provided), that licensees may convey the
108 | work under this License, and how to view a copy of this License.  If
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110 | menu, a prominent item in the list meets this criterion.
111 | 
112 |   1. Source Code.
113 | 
114 |   The "source code" for a work means the preferred form of the work
115 | for making modifications to it.  "Object code" means any non-source
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117 | 
118 |   A "Standard Interface" means an interface that either is an official
119 | standard defined by a recognized standards body, or, in the case of
120 | interfaces specified for a particular programming language, one that
121 | is widely used among developers working in that language.
122 | 
123 |   The "System Libraries" of an executable work include anything, other
124 | than the work as a whole, that (a) is included in the normal form of
125 | packaging a Major Component, but which is not part of that Major
126 | Component, and (b) serves only to enable use of the work with that
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128 | implementation is available to the public in source code form.  A
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130 | (kernel, window system, and so on) of the specific operating system
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132 | produce the work, or an object code interpreter used to run it.
133 | 
134 |   The "Corresponding Source" for a work in object code form means all
135 | the source code needed to generate, install, and (for an executable
136 | work) run the object code and to modify the work, including scripts to
137 | control those activities.  However, it does not include the work's
138 | System Libraries, or general-purpose tools or generally available free
139 | programs which are used unmodified in performing those activities but
140 | which are not part of the work.  For example, Corresponding Source
141 | includes interface definition files associated with source files for
142 | the work, and the source code for shared libraries and dynamically
143 | linked subprograms that the work is specifically designed to require,
144 | such as by intimate data communication or control flow between those
145 | subprograms and other parts of the work.
146 | 
147 |   The Corresponding Source need not include anything that users
148 | can regenerate automatically from other parts of the Corresponding
149 | Source.
150 | 
151 |   The Corresponding Source for a work in source code form is that
152 | same work.
153 | 
154 |   2. Basic Permissions.
155 | 
156 |   All rights granted under this License are granted for the term of
157 | copyright on the Program, and are irrevocable provided the stated
158 | conditions are met.  This License explicitly affirms your unlimited
159 | permission to run the unmodified Program.  The output from running a
160 | covered work is covered by this License only if the output, given its
161 | content, constitutes a covered work.  This License acknowledges your
162 | rights of fair use or other equivalent, as provided by copyright law.
163 | 
164 |   You may make, run and propagate covered works that you do not
165 | convey, without conditions so long as your license otherwise remains
166 | in force.  You may convey covered works to others for the sole purpose
167 | of having them make modifications exclusively for you, or provide you
168 | with facilities for running those works, provided that you comply with
169 | the terms of this License in conveying all material for which you do
170 | not control copyright.  Those thus making or running the covered works
171 | for you must do so exclusively on your behalf, under your direction
172 | and control, on terms that prohibit them from making any copies of
173 | your copyrighted material outside their relationship with you.
174 | 
175 |   Conveying under any other circumstances is permitted solely under
176 | the conditions stated below.  Sublicensing is not allowed; section 10
177 | makes it unnecessary.
178 | 
179 |   3. Protecting Users' Legal Rights From Anti-Circumvention Law.
180 | 
181 |   No covered work shall be deemed part of an effective technological
182 | measure under any applicable law fulfilling obligations under article
183 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or
184 | similar laws prohibiting or restricting circumvention of such
185 | measures.
186 | 
187 |   When you convey a covered work, you waive any legal power to forbid
188 | circumvention of technological measures to the extent such circumvention
189 | is effected by exercising rights under this License with respect to
190 | the covered work, and you disclaim any intention to limit operation or
191 | modification of the work as a means of enforcing, against the work's
192 | users, your or third parties' legal rights to forbid circumvention of
193 | technological measures.
194 | 
195 |   4. Conveying Verbatim Copies.
196 | 
197 |   You may convey verbatim copies of the Program's source code as you
198 | receive it, in any medium, provided that you conspicuously and
199 | appropriately publish on each copy an appropriate copyright notice;
200 | keep intact all notices stating that this License and any
201 | non-permissive terms added in accord with section 7 apply to the code;
202 | keep intact all notices of the absence of any warranty; and give all
203 | recipients a copy of this License along with the Program.
204 | 
205 |   You may charge any price or no price for each copy that you convey,
206 | and you may offer support or warranty protection for a fee.
207 | 
208 |   5. Conveying Modified Source Versions.
209 | 
210 |   You may convey a work based on the Program, or the modifications to
211 | produce it from the Program, in the form of source code under the
212 | terms of section 4, provided that you also meet all of these conditions:
213 | 
214 |     a) The work must carry prominent notices stating that you modified
215 |     it, and giving a relevant date.
216 | 
217 |     b) The work must carry prominent notices stating that it is
218 |     released under this License and any conditions added under section
219 |     7.  This requirement modifies the requirement in section 4 to
220 |     "keep intact all notices".
221 | 
222 |     c) You must license the entire work, as a whole, under this
223 |     License to anyone who comes into possession of a copy.  This
224 |     License will therefore apply, along with any applicable section 7
225 |     additional terms, to the whole of the work, and all its parts,
226 |     regardless of how they are packaged.  This License gives no
227 |     permission to license the work in any other way, but it does not
228 |     invalidate such permission if you have separately received it.
229 | 
230 |     d) If the work has interactive user interfaces, each must display
231 |     Appropriate Legal Notices; however, if the Program has interactive
232 |     interfaces that do not display Appropriate Legal Notices, your
233 |     work need not make them do so.
234 | 
235 |   A compilation of a covered work with other separate and independent
236 | works, which are not by their nature extensions of the covered work,
237 | and which are not combined with it such as to form a larger program,
238 | in or on a volume of a storage or distribution medium, is called an
239 | "aggregate" if the compilation and its resulting copyright are not
240 | used to limit the access or legal rights of the compilation's users
241 | beyond what the individual works permit.  Inclusion of a covered work
242 | in an aggregate does not cause this License to apply to the other
243 | parts of the aggregate.
244 | 
245 |   6. Conveying Non-Source Forms.
246 | 
247 |   You may convey a covered work in object code form under the terms
248 | of sections 4 and 5, provided that you also convey the
249 | machine-readable Corresponding Source under the terms of this License,
250 | in one of these ways:
251 | 
252 |     a) Convey the object code in, or embodied in, a physical product
253 |     (including a physical distribution medium), accompanied by the
254 |     Corresponding Source fixed on a durable physical medium
255 |     customarily used for software interchange.
256 | 
257 |     b) Convey the object code in, or embodied in, a physical product
258 |     (including a physical distribution medium), accompanied by a
259 |     written offer, valid for at least three years and valid for as
260 |     long as you offer spare parts or customer support for that product
261 |     model, to give anyone who possesses the object code either (1) a
262 |     copy of the Corresponding Source for all the software in the
263 |     product that is covered by this License, on a durable physical
264 |     medium customarily used for software interchange, for a price no
265 |     more than your reasonable cost of physically performing this
266 |     conveying of source, or (2) access to copy the
267 |     Corresponding Source from a network server at no charge.
268 | 
269 |     c) Convey individual copies of the object code with a copy of the
270 |     written offer to provide the Corresponding Source.  This
271 |     alternative is allowed only occasionally and noncommercially, and
272 |     only if you received the object code with such an offer, in accord
273 |     with subsection 6b.
274 | 
275 |     d) Convey the object code by offering access from a designated
276 |     place (gratis or for a charge), and offer equivalent access to the
277 |     Corresponding Source in the same way through the same place at no
278 |     further charge.  You need not require recipients to copy the
279 |     Corresponding Source along with the object code.  If the place to
280 |     copy the object code is a network server, the Corresponding Source
281 |     may be on a different server (operated by you or a third party)
282 |     that supports equivalent copying facilities, provided you maintain
283 |     clear directions next to the object code saying where to find the
284 |     Corresponding Source.  Regardless of what server hosts the
285 |     Corresponding Source, you remain obligated to ensure that it is
286 |     available for as long as needed to satisfy these requirements.
287 | 
288 |     e) Convey the object code using peer-to-peer transmission, provided
289 |     you inform other peers where the object code and Corresponding
290 |     Source of the work are being offered to the general public at no
291 |     charge under subsection 6d.
292 | 
293 |   A separable portion of the object code, whose source code is excluded
294 | from the Corresponding Source as a System Library, need not be
295 | included in conveying the object code work.
296 | 
297 |   A "User Product" is either (1) a "consumer product", which means any
298 | tangible personal property which is normally used for personal, family,
299 | or household purposes, or (2) anything designed or sold for incorporation
300 | into a dwelling.  In determining whether a product is a consumer product,
301 | doubtful cases shall be resolved in favor of coverage.  For a particular
302 | product received by a particular user, "normally used" refers to a
303 | typical or common use of that class of product, regardless of the status
304 | of the particular user or of the way in which the particular user
305 | actually uses, or expects or is expected to use, the product.  A product
306 | is a consumer product regardless of whether the product has substantial
307 | commercial, industrial or non-consumer uses, unless such uses represent
308 | the only significant mode of use of the product.
309 | 
310 |   "Installation Information" for a User Product means any methods,
311 | procedures, authorization keys, or other information required to install
312 | and execute modified versions of a covered work in that User Product from
313 | a modified version of its Corresponding Source.  The information must
314 | suffice to ensure that the continued functioning of the modified object
315 | code is in no case prevented or interfered with solely because
316 | modification has been made.
317 | 
318 |   If you convey an object code work under this section in, or with, or
319 | specifically for use in, a User Product, and the conveying occurs as
320 | part of a transaction in which the right of possession and use of the
321 | User Product is transferred to the recipient in perpetuity or for a
322 | fixed term (regardless of how the transaction is characterized), the
323 | Corresponding Source conveyed under this section must be accompanied
324 | by the Installation Information.  But this requirement does not apply
325 | if neither you nor any third party retains the ability to install
326 | modified object code on the User Product (for example, the work has
327 | been installed in ROM).
328 | 
329 |   The requirement to provide Installation Information does not include a
330 | requirement to continue to provide support service, warranty, or updates
331 | for a work that has been modified or installed by the recipient, or for
332 | the User Product in which it has been modified or installed.  Access to a
333 | network may be denied when the modification itself materially and
334 | adversely affects the operation of the network or violates the rules and
335 | protocols for communication across the network.
336 | 
337 |   Corresponding Source conveyed, and Installation Information provided,
338 | in accord with this section must be in a format that is publicly
339 | documented (and with an implementation available to the public in
340 | source code form), and must require no special password or key for
341 | unpacking, reading or copying.
342 | 
343 |   7. Additional Terms.
344 | 
345 |   "Additional permissions" are terms that supplement the terms of this
346 | License by making exceptions from one or more of its conditions.
347 | Additional permissions that are applicable to the entire Program shall
348 | be treated as though they were included in this License, to the extent
349 | that they are valid under applicable law.  If additional permissions
350 | apply only to part of the Program, that part may be used separately
351 | under those permissions, but the entire Program remains governed by
352 | this License without regard to the additional permissions.
353 | 
354 |   When you convey a copy of a covered work, you may at your option
355 | remove any additional permissions from that copy, or from any part of
356 | it.  (Additional permissions may be written to require their own
357 | removal in certain cases when you modify the work.)  You may place
358 | additional permissions on material, added by you to a covered work,
359 | for which you have or can give appropriate copyright permission.
360 | 
361 |   Notwithstanding any other provision of this License, for material you
362 | add to a covered work, you may (if authorized by the copyright holders of
363 | that material) supplement the terms of this License with terms:
364 | 
365 |     a) Disclaiming warranty or limiting liability differently from the
366 |     terms of sections 15 and 16 of this License; or
367 | 
368 |     b) Requiring preservation of specified reasonable legal notices or
369 |     author attributions in that material or in the Appropriate Legal
370 |     Notices displayed by works containing it; or
371 | 
372 |     c) Prohibiting misrepresentation of the origin of that material, or
373 |     requiring that modified versions of such material be marked in
374 |     reasonable ways as different from the original version; or
375 | 
376 |     d) Limiting the use for publicity purposes of names of licensors or
377 |     authors of the material; or
378 | 
379 |     e) Declining to grant rights under trademark law for use of some
380 |     trade names, trademarks, or service marks; or
381 | 
382 |     f) Requiring indemnification of licensors and authors of that
383 |     material by anyone who conveys the material (or modified versions of
384 |     it) with contractual assumptions of liability to the recipient, for
385 |     any liability that these contractual assumptions directly impose on
386 |     those licensors and authors.
387 | 
388 |   All other non-permissive additional terms are considered "further
389 | restrictions" within the meaning of section 10.  If the Program as you
390 | received it, or any part of it, contains a notice stating that it is
391 | governed by this License along with a term that is a further
392 | restriction, you may remove that term.  If a license document contains
393 | a further restriction but permits relicensing or conveying under this
394 | License, you may add to a covered work material governed by the terms
395 | of that license document, provided that the further restriction does
396 | not survive such relicensing or conveying.
397 | 
398 |   If you add terms to a covered work in accord with this section, you
399 | must place, in the relevant source files, a statement of the
400 | additional terms that apply to those files, or a notice indicating
401 | where to find the applicable terms.
402 | 
403 |   Additional terms, permissive or non-permissive, may be stated in the
404 | form of a separately written license, or stated as exceptions;
405 | the above requirements apply either way.
406 | 
407 |   8. Termination.
408 | 
409 |   You may not propagate or modify a covered work except as expressly
410 | provided under this License.  Any attempt otherwise to propagate or
411 | modify it is void, and will automatically terminate your rights under
412 | this License (including any patent licenses granted under the third
413 | paragraph of section 11).
414 | 
415 |   However, if you cease all violation of this License, then your
416 | license from a particular copyright holder is reinstated (a)
417 | provisionally, unless and until the copyright holder explicitly and
418 | finally terminates your license, and (b) permanently, if the copyright
419 | holder fails to notify you of the violation by some reasonable means
420 | prior to 60 days after the cessation.
421 | 
422 |   Moreover, your license from a particular copyright holder is
423 | reinstated permanently if the copyright holder notifies you of the
424 | violation by some reasonable means, this is the first time you have
425 | received notice of violation of this License (for any work) from that
426 | copyright holder, and you cure the violation prior to 30 days after
427 | your receipt of the notice.
428 | 
429 |   Termination of your rights under this section does not terminate the
430 | licenses of parties who have received copies or rights from you under
431 | this License.  If your rights have been terminated and not permanently
432 | reinstated, you do not qualify to receive new licenses for the same
433 | material under section 10.
434 | 
435 |   9. Acceptance Not Required for Having Copies.
436 | 
437 |   You are not required to accept this License in order to receive or
438 | run a copy of the Program.  Ancillary propagation of a covered work
439 | occurring solely as a consequence of using peer-to-peer transmission
440 | to receive a copy likewise does not require acceptance.  However,
441 | nothing other than this License grants you permission to propagate or
442 | modify any covered work.  These actions infringe copyright if you do
443 | not accept this License.  Therefore, by modifying or propagating a
444 | covered work, you indicate your acceptance of this License to do so.
445 | 
446 |   10. Automatic Licensing of Downstream Recipients.
447 | 
448 |   Each time you convey a covered work, the recipient automatically
449 | receives a license from the original licensors, to run, modify and
450 | propagate that work, subject to this License.  You are not responsible
451 | for enforcing compliance by third parties with this License.
452 | 
453 |   An "entity transaction" is a transaction transferring control of an
454 | organization, or substantially all assets of one, or subdividing an
455 | organization, or merging organizations.  If propagation of a covered
456 | work results from an entity transaction, each party to that
457 | transaction who receives a copy of the work also receives whatever
458 | licenses to the work the party's predecessor in interest had or could
459 | give under the previous paragraph, plus a right to possession of the
460 | Corresponding Source of the work from the predecessor in interest, if
461 | the predecessor has it or can get it with reasonable efforts.
462 | 
463 |   You may not impose any further restrictions on the exercise of the
464 | rights granted or affirmed under this License.  For example, you may
465 | not impose a license fee, royalty, or other charge for exercise of
466 | rights granted under this License, and you may not initiate litigation
467 | (including a cross-claim or counterclaim in a lawsuit) alleging that
468 | any patent claim is infringed by making, using, selling, offering for
469 | sale, or importing the Program or any portion of it.
470 | 
471 |   11. Patents.
472 | 
473 |   A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based.  The
475 | work thus licensed is called the contributor's "contributor version".
476 | 
477 |   A contributor's "essential patent claims" are all patent claims
478 | owned or controlled by the contributor, whether already acquired or
479 | hereafter acquired, that would be infringed by some manner, permitted
480 | by this License, of making, using, or selling its contributor version,
481 | but do not include claims that would be infringed only as a
482 | consequence of further modification of the contributor version.  For
483 | purposes of this definition, "control" includes the right to grant
484 | patent sublicenses in a manner consistent with the requirements of
485 | this License.
486 | 
487 |   Each contributor grants you a non-exclusive, worldwide, royalty-free
488 | patent license under the contributor's essential patent claims, to
489 | make, use, sell, offer for sale, import and otherwise run, modify and
490 | propagate the contents of its contributor version.
491 | 
492 |   In the following three paragraphs, a "patent license" is any express
493 | agreement or commitment, however denominated, not to enforce a patent
494 | (such as an express permission to practice a patent or covenant not to
495 | sue for patent infringement).  To "grant" such a patent license to a
496 | party means to make such an agreement or commitment not to enforce a
497 | patent against the party.
498 | 
499 |   If you convey a covered work, knowingly relying on a patent license,
500 | and the Corresponding Source of the work is not available for anyone
501 | to copy, free of charge and under the terms of this License, through a
502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients.  "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 | 
513 |   If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 | 
521 |   A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License.  You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 | 
536 |   Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 | 
540 |   12. No Surrender of Others' Freedom.
541 | 
542 |   If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License.  If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all.  For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 | 
552 |   13. Use with the GNU Affero General Public License.
553 | 
554 |   Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work.  The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 | 
563 |   14. Revised Versions of this License.
564 | 
565 |   The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time.  Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 | 
570 |   Each version is given a distinguishing version number.  If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation.  If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 | 
579 |   If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 | 
584 |   Later license versions may give you additional or different
585 | permissions.  However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 | 
589 |   15. Disclaimer of Warranty.
590 | 
591 |   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 | 
600 |   16. Limitation of Liability.
601 | 
602 |   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 | 
612 |   17. Interpretation of Sections 15 and 16.
613 | 
614 |   If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 | 
621 |                      END OF TERMS AND CONDITIONS
622 | 
623 |             How to Apply These Terms to Your New Programs
624 | 
625 |   If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 | 
629 |   To do so, attach the following notices to the program.  It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 | 
634 |     <one line to give the program's name and a brief idea of what it does.>
635 |     Copyright (C) <year>  <name of author>
636 | 
637 |     This program is free software: you can redistribute it and/or modify
638 |     it under the terms of the GNU General Public License as published by
639 |     the Free Software Foundation, either version 3 of the License, or
640 |     (at your option) any later version.
641 | 
642 |     This program is distributed in the hope that it will be useful,
643 |     but WITHOUT ANY WARRANTY; without even the implied warranty of
644 |     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
645 |     GNU General Public License for more details.
646 | 
647 |     You should have received a copy of the GNU General Public License
648 |     along with this program.  If not, see <https://www.gnu.org/licenses/>.
649 | 
650 | Also add information on how to contact you by electronic and paper mail.
651 | 
652 |   If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 | 
655 |     <program>  Copyright (C) <year>  <name of author>
656 |     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 |     This is free software, and you are welcome to redistribute it
658 |     under certain conditions; type `show c' for details.
659 | 
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License.  Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 | 
664 |   You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | <https://www.gnu.org/licenses/>.
668 | 
669 |   The GNU General Public License does not permit incorporating your program
670 | into proprietary programs.  If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library.  If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License.  But first, please read
674 | <https://www.gnu.org/licenses/why-not-lgpl.html>.
675 | 


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