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soundconverter.py
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/
soundconverter.py
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# SoundConverter - GNOME application for converting between audio formats.
# Copyright 2004 Lars Wirzenius
# Copyright 2005-2017 Gautier Portet
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 3 of the License.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
"""
SoundConverter Launcher.
"""
# imports and package setup
import os
import sys
import locale
import gettext
from optparse import OptionParser, OptionGroup
# variables
LIBDIR = '@libdir@'
DATADIR = '@datadir@'
NAME = 'SoundConverter'
VERSION = '@version@'
GLADEFILE = '@datadir@/soundconverter/soundconverter.glade'
PACKAGE = NAME.lower()
try:
import gi
gi.require_version('Gst', '1.0')
gi.require_version('Gtk', '3.0')
from gi.repository import Gst, Gtk, GLib, Gdk
except (ImportError, ValueError) as error:
print(('%s needs GTK >= 3.0 (Error: "%s")' % (NAME, error)))
sys.exit(1)
# remove gstreamer arguments so only gstreamer sees them.
args = [a for a in sys.argv[1:] if not a.startswith('--gst-')]
Gst.init([a for a in sys.argv[1:] if a.startswith('--gst-')])
try:
locale.setlocale(locale.LC_ALL, '')
locale.bindtextdomain(PACKAGE, '@datadir@/locale')
gettext.bindtextdomain(PACKAGE, '@datadir@/locale')
gettext.textdomain(PACKAGE)
gettext.install(PACKAGE, localedir='@datadir@/locale')
#from gettext import gettext as _
except locale.Error:
print(' cannot use system locale.')
locale.setlocale(locale.LC_ALL, 'C')
gettext.textdomain(PACKAGE)
gettext.install(PACKAGE, localedir='@datadir@/locale')
def _add_soundconverter_path():
""" Makes the soundconverter package importable, which
has been installed to LIBDIR during make install """
root = os.path.join(LIBDIR, 'soundconverter', 'python')
if not root in sys.path:
sys.path.insert(0, root)
_add_soundconverter_path()
import soundconverter
soundconverter.NAME = NAME
soundconverter.VERSION = VERSION
soundconverter.GLADEFILE = GLADEFILE
from soundconverter.settings import settings
from soundconverter.fileoperations import vfs_encode_filename
from soundconverter.batch import CLI_Convert, cli_tags_main, CLI_Check
from soundconverter.fileoperations import filename_to_uri
from soundconverter.ui import gui_main
# command line argument parsing, launch-mode
def check_mime_type(mime):
types = {'vorbis': 'audio/x-vorbis', 'flac': 'audio/x-flac', 'wav' : 'audio/x-wav',
'mp3': 'audio/mpeg', 'aac': 'audio/x-m4a'}
mime = types.get(mime, mime)
if mime not in list(types.values()):
print(('Cannot use "%s" mime type.' % mime))
msg = 'Supported shortcuts and mime types:'
for k, v in sorted(types.items()):
msg += ' %s %s' % (k, v)
print(msg)
raise SystemExit
return mime
def mode_callback(option, opt, value, parser, **kwargs):
setattr(parser.values, option.dest, kwargs[option.dest])
class ModifiedOptionParser(OptionParser):
"""
A OptionParser class that doesn't remove newlines on the epilog in order
to show usage examples https://stackoverflow.com/questions/1857346/
See optparse.OptionParser for the original docstring
"""
def format_epilog(self, formatter):
if self.epilog == None:
return ""
return self.epilog
def parse_command_line():
""" Creates and returns the OptionParser, which parse the
command line arguments and displays help with --help. """
parser = ModifiedOptionParser(epilog='\nExample:\n'
' soundconverter -b [file] [dir] -r -m audio/x-vorbis -s .ogg -o [output dir] -Q 4\n')
parser.add_option('-c', '--check', dest='mode', action='callback',
callback=mode_callback, callback_kwargs={'mode':'check'},
help=_('Print which files cannot be read by gstreamer. '
'Useful before converting. This will disable the GUI and '
'run in batch mode, from the command line.'))
parser.add_option('-b', '--batch', dest='mode', action='callback',
callback=mode_callback, callback_kwargs={'mode':'batch'},
help=_('Convert in batch mode, from the command line, '
'without a graphical user interface. You '
'can use this from, say, shell scripts.'))
parser.add_option('-t', '--tags', dest="mode", action='callback',
callback=mode_callback, callback_kwargs={'mode':'tags'},
help=_('Show tags for input files instead of converting '
'them. This indicates command line batch mode '
'and disables the graphical user interface.'))
parser.add_option('-q', '--quiet', action="store_true", dest="quiet",
help=_("Be quiet. Don't write normal output, only errors."))
parser.add_option('-d', '--debug', action="store_true", dest="debug",
help=_('Displays additional debug information'))
parser.add_option('-j', '--jobs', action='store', type='int', dest='forced-jobs',
metavar='NUM', help=_('Force number of concurrent conversions.'))
# batch mode settings
batch_option_group = OptionGroup(parser, 'Batch Mode Options',
'Those options will only have effect when the -b, -c or -t '
'option is provided')
batch_option_group.add_option('-m', '--mime-type', dest="cli-output-type",
help=_('Set the output MIME type. The default '
'is %s. Note that you will probably want to set the output '
'suffix as well. Supported MIME types: %s') % (settings['cli-output-type'],
'audio/x-m4a (AAC) audio/x-flac (FLAC) audio/mpeg (MP3) audio/x-vorbis (Vorbis)'
'audio/x-wav (WAV)'))
batch_option_group.add_option('-s', '--suffix', dest="cli-output-suffix",
help=_('Set the output filename suffix. '
'The default is %s. Note that the suffix does not '
'affect\n the output MIME type.') % settings['cli-output-suffix'])
batch_option_group.add_option('-r', '--recursive', action="store_true", dest="recursive",
help=_('Go recursively into subdirectories'))
batch_option_group.add_option('-i', '--ignore', action="store_true", dest="ignore-existing",
help=_('Ignore files for which the target already exists instead '
'of converting them again'))
batch_option_group.add_option('-o', '--output', action="store", dest="output-path",
help=_('Put converted files into a different directory while rebuilding '
'the original directory structure. This includes the name of the original '
'directory.'))
batch_option_group.add_option('-Q', '--quality', action="store", type='int', dest="quality",
metavar='NUM', help=_('Quality of the converted output file. Between 0 '
'(lowest) and 5 (highest). Default is 3.'), default=3)
parser.add_option_group(batch_option_group)
# not implemented yet
# parser.add_option('--help-gst', action="store_true", dest="_unused",
# help=_('Shows GStreamer Options'))
return parser
parser = parse_command_line()
options, files = parser.parse_args(args)
for k in dir(options):
if k.startswith('_'):
continue
if getattr(options, k) is None:
continue
settings[k] = getattr(options, k)
settings['cli-output-type'] = check_mime_type(settings['cli-output-type'])
if not settings.get('quiet'):
print(( '%s %s' % (NAME, VERSION) ))
if settings['forced-jobs']:
print(('Using %d thread(s)' % settings['forced-jobs']))
if settings['mode'] == 'gui':
gui_main(NAME, VERSION, GLADEFILE, files)
else:
if not files:
print('nothing to do…')
if settings['mode'] == 'tags':
cli_tags_main(files)
elif settings['mode'] == 'batch':
CLI_Convert(files)
elif settings['mode'] == 'check':
CLI_Check(files)