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1 | # -*- coding: utf-8 -*- | |
2 | import argparse | |
3 | import sys | |
4 | import os | |
5 | import math | |
6 | import sounddevice as sd | |
7 | ||
8 | class Config: | |
9 | pass | |
10 | ||
11 | def path(): | |
12 | if getattr(sys, 'frozen', False): | |
13 | return sys._MEIPASS + "/" | |
14 | else: | |
15 | path = os.path.dirname(os.path.realpath(__file__)) | |
16 | return path + "/../" | |
17 | ||
18 | def parse_args(): | |
19 | argv = sys.argv[1:] | |
20 | sys.argv = sys.argv[:1] | |
21 | if "--" in argv: | |
22 | index = argv.index("--") | |
23 | kivy_args = argv[index+1:] | |
24 | argv = argv[:index] | |
25 | ||
26 | sys.argv.extend(kivy_args) | |
27 | ||
28 | parser = argparse.ArgumentParser( | |
29 | description="A Music Sampler application.", | |
30 | formatter_class=argparse.ArgumentDefaultsHelpFormatter) | |
31 | parser.add_argument("-c", "--config", | |
32 | default="config.yml", | |
33 | required=False, | |
34 | help="Config file to load") | |
35 | parser.add_argument("-m", "--builtin-mixing", | |
36 | action="store_true", | |
37 | help="Make the mixing of sounds manually (do it if the system cannot handle it correctly)") | |
38 | parser.add_argument("-l", "--latency", | |
39 | default="high", | |
40 | required=False, | |
41 | help="Latency: low, high or number of seconds") | |
42 | parser.add_argument("-b", "--blocksize", | |
43 | default=0, | |
44 | type=int, | |
45 | required=False, | |
46 | help="Blocksize: If not 0, the numbe of frames to take at each step for the mixer") | |
47 | parser.add_argument("-f", "--frame-rate", | |
48 | default=44100, | |
49 | type=int, | |
50 | required=False, | |
51 | help="Frame rate to play the musics") | |
52 | parser.add_argument("-x", "--channels", | |
53 | default=2, | |
54 | type=int, | |
55 | required=False, | |
56 | help="Number of channels to use") | |
57 | parser.add_argument("-s", "--sample-width", | |
58 | default=2, | |
59 | type=int, | |
60 | required=False, | |
61 | help="Sample width (number of bytes for each frame)") | |
62 | parser.add_argument("-V", "--version", | |
63 | action="version", | |
64 | help="Displays the current version and exits. Only use in bundled package", | |
65 | version=show_version()) | |
66 | parser.add_argument("--device", | |
67 | action=SelectDeviceAction, | |
68 | help="Select this sound device" | |
69 | ) | |
70 | parser.add_argument("--list-devices", | |
71 | nargs=0, | |
72 | action=ListDevicesAction, | |
73 | help="List available sound devices" | |
74 | ) | |
75 | parser.add_argument('--', | |
76 | dest="args", | |
77 | help="Kivy arguments. All arguments after this are interpreted by Kivy. Pass \"-- --help\" to get Kivy's usage.") | |
78 | args = parser.parse_args(argv) | |
79 | ||
80 | Config.yml_file = args.config | |
81 | Config.latency = args.latency | |
82 | Config.blocksize = args.blocksize | |
83 | Config.frame_rate = args.frame_rate | |
84 | Config.channels = args.channels | |
85 | Config.sample_width = args.sample_width | |
86 | Config.builtin_mixing = args.builtin_mixing | |
87 | ||
88 | class SelectDeviceAction(argparse.Action): | |
89 | def __call__(self, parser, namespace, values, option_string=None): | |
90 | sd.default.device = values | |
91 | ||
92 | class ListDevicesAction(argparse.Action): | |
93 | nargs = 0 | |
94 | def __call__(self, parser, namespace, values, option_string=None): | |
95 | print(sd.query_devices()) | |
96 | sys.exit() | |
97 | ||
98 | def show_version(): | |
99 | if getattr(sys, 'frozen', False): | |
100 | with open(path() + ".pyinstaller_commit", "r") as f: | |
101 | return f.read() | |
102 | else: | |
103 | return "option '-v' can only be used in bundled package" | |
104 | ||
105 | def duration_to_min_sec(duration): | |
106 | minutes = int(duration / 60) | |
107 | seconds = int(duration) % 60 | |
108 | if minutes < 100: | |
109 | return "{:2}:{:0>2}".format(minutes, seconds) | |
110 | else: | |
111 | return "{}:{:0>2}".format(minutes, seconds) | |
112 | ||
113 | def gain(volume, old_volume = None): | |
114 | if old_volume is None: | |
115 | return 20 * math.log10(volume / 100) | |
116 | else: | |
117 | return [20 * math.log10(max(volume, 0.1) / max(old_volume, 0.1)), max(volume, 0)] | |
118 |