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138 lines
6.3 KiB
Python
Executable file
138 lines
6.3 KiB
Python
Executable file
#!/usr/bin/python3
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__author__ = 'Dominik Krupke, dserv01.de'
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#
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# While you want to listen to lossless music on your computer you may not be able to also listen to it mobile because
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# it takes too much space. A 32GB-SDCard does not suffice for your full music library so you only have the options to
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# either only hearing to a subset mobile or converting the music to a lossy format. This script is for the second
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# option.
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# * Of course you don't want the lossy files on your computer because you already have your perfect lossless music there.
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# * If you extend your music library you want a simple way to also have them mobile.
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# * You don't want to convert already converted music twice
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# This script synchronizes a lossless library folder (e.g. your music folder on your computer) to a lossy library
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# folder (e.g. the music folder of your mobile device) by checking if for all music files in your lossless folder there
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# is a converted version in your lossy folder. If this is not the case the file is converted. On the other side it
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# checks if you still have the lossless file for each lossy file in your library, otherwise this file is removed (so
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# removing a file from your lossless library also removes it from your lossy library)
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#
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# You can use your own commands for converting specific files. These commands have to convert a single file (check the
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# commands-array).
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#
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# The configuration is done with the from_path and the to_path, as well as with the commands-array.
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import os
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import subprocess
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##### CONFIGURATION ###########################################################################################
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# This is the path of your lossless libray, e.g. '/home/YOURNAME/Music/'
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FROM_PATH = '/home/glados/Music/HiFi/'
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# This is the path of your lossy library, e.g. /mnt/SDCARD0/Music/'
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TO_PATH = '/home/glados/Music/LoFi/'
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# Use [INPUT] and [OUTPUT] to build your commands. Both will be replaced by the full path but without the file extension,
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# e.g. /home/doms/Music/Beethoven/FuerElise.flac -> /home/doms/Music/Beethoven/FuerElise
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# You need to add the new and old fileextension for checking if the file is already converted and to remove old files
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COMMANDS = [['flac', 'opus', 'opusenc --bitrate 72 [INPUT].flac [OUTPUT].opus'],
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['mp3', 'opus', 'ffmpeg -i [INPUT].mp3 -c:v copy -f flac - | opusenc --bitrate 72 - [OUTPUT].opus'],
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['m4a', 'opus', 'ffmpeg -i [INPUT].m4a -c:v copy -f flac - | opusenc --bitrate 72 - [OUTPUT].opus'],
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['opus', 'opus', 'ffmpeg -i [INPUT].opus -c:v copy -f flac - | opusenc --bitrate 72 - [OUTPUT].opus'],
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['jpg', 'jpg', 'cp [INPUT].jpg [OUTPUT].jpg'],
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['png', 'jpg', 'convert [INPUT].png [OUTPUT].jpg']
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]
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# Remove files that are not in the original library
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SYNC_DELETIONS = True
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ASK_BEFORE_DELETE = False
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###############################################################################################################
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# Check path format
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if (FROM_PATH[-1] != '/' or TO_PATH[-1] != '/'):
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exit(1)
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# Create library paths if not existence
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try:
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if (not os.path.exists(TO_PATH)):
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os.makedirs(TO_PATH)
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elif (os.path.isfile(TO_PATH)):
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raise Exception("Directory is file?!")
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except Exception as e:
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exit(1)
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# Create folders if not existing
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def createFolder(subpath):
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if (os.path.exists(TO_PATH + subpath) and os.path.isdir(TO_PATH + subpath)):
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return True
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try:
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os.makedirs(TO_PATH + subpath)
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return True
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except Exception as e:
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return False
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# Escape the paths for the os.system
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def escapePath(s):
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return s.replace(" ", "\ ").replace(")", "\)").replace("(", "\(").replace("&", "\&").replace("'", "\\\'")
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# Go through all files and convert
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for root, dirs, files in os.walk(FROM_PATH, topdown=False):
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subpath = root[len(FROM_PATH):] + "/"
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if (createFolder(subpath)):
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for name in files:
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filename_without_extension = os.path.splitext(name)[0]
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file_extension = os.path.splitext(name)[1][1:]
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source_path_without_extension = FROM_PATH + subpath + filename_without_extension
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converted_path_without_extension = TO_PATH + subpath + filename_without_extension
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# Get command tripple - sure you can do this more efficient with a hashmap but there will only be a few entries
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command_tripple = None
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for tripple in COMMANDS:
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if (tripple[0] == file_extension):
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command_tripple = tripple
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break
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if (not command_tripple):
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continue
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source_path = source_path_without_extension + "." + command_tripple[0]
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goal_path = converted_path_without_extension + "." + command_tripple[1]
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if (os.path.isfile(source_path)):
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# If goal file does not exists or is older than source
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if (not os.path.exists(goal_path) or os.path.getctime(source_path) > os.path.getctime(goal_path)):
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os.system(command_tripple[2].replace("[INPUT]", escapePath(source_path_without_extension)).replace(
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"[OUTPUT]", escapePath(converted_path_without_extension)))
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# Remove old files
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if (SYNC_DELETIONS):
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for root, dirs, files in os.walk(TO_PATH, topdown=False):
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subpath = root[len(TO_PATH):] + "/"
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for name in files:
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filename_without_extension = os.path.splitext(name)[0]
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file_extension = os.path.splitext(name)[1][1:]
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source_path_without_extension = FROM_PATH + subpath + filename_without_extension
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converted_path_without_extension = TO_PATH + subpath + filename_without_extension
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original_exists = False
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for tripple in COMMANDS:
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if (tripple[1] == file_extension and os.path.exists(source_path_without_extension + "." + tripple[0])):
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original_exists = True
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break
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if (not original_exists):
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filepath_to_delete = escapePath(converted_path_without_extension) + "." + file_extension
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os.system("rm " + ("-i " if ASK_BEFORE_DELETE else "") + filepath_to_delete)
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# Remove old empty folders
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for folder in dirs:
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subpath = root[len(TO_PATH):] + "/"
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if not os.path.exists(FROM_PATH + subpath + folder):
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os.system("rmdir " + escapePath(TO_PATH + subpath + folder))
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