fossfreedom
330 linhas
12 KiB
Python
330 linhas
12 KiB
Python
# -*- Mode: python; coding: utf-8; tab-width: 4; indent-tabs-mode: nil; -*-
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#
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# Copyright (C) 2012 - fossfreedom
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# Copyright (C) 2012 - Agustin Carrasco
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of thie GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import shutil
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import os
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import sys
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import subprocess
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from gi.repository import GObject
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from gi.repository import Gtk
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from gi.repository import GLib
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from gi.repository import RB
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from gi.repository import Gdk
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from gi.repository import Peas
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from gi.repository import Gst
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from coverart_utils import NaturalString
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import rb
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import coverart_rb3compat as rb3compat
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class CoverArtExport(GObject.Object):
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'''
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This class provides for various export routines
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'''
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TARGET_BITRATE = 128
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def __init__(self, plugin, shell, album_manager):
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self.plugin = plugin
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self.shell = shell
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self.album_manager = album_manager
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self._gstreamer_has_initialised = False
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def is_search_plugin_enabled(self):
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peas = Peas.Engine.get_default()
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loaded_plugins = peas.get_loaded_plugins()
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result = False
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if 'coverart_search_providers' in loaded_plugins:
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info = peas.get_plugin_info('coverart_search_providers')
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version = info.get_version()
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if NaturalString(version) >= "0.9":
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result = True
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return result
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def embed_albums(self, selected_albums):
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'''
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method to create the menu items for all supported plugins
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:selected_albums: `Album` - array of albums
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'''
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self._initialise_gstreamer()
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from coverart_search_tracks import CoverArtTracks
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search_tracks = CoverArtTracks()
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playlist_manager = self.shell.props.playlist_manager
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playlists_entries = playlist_manager.get_playlists()
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ui = Gtk.Builder()
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ui.add_from_file(rb.find_plugin_file(self.plugin,
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'ui/coverart_exportembed.ui'))
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ui.connect_signals(self)
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embeddialog = ui.get_object('exportembeddialog')
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folderchooserbutton = ui.get_object('folderchooserbutton')
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use_album_name_checkbutton = ui.get_object('use_album_name_checkbutton')
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open_filemanager_checkbutton = ui.get_object('open_filemanager_checkbutton')
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convert_checkbutton = ui.get_object('convert_checkbutton')
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bitrate_spinbutton = ui.get_object('bitrate_spinbutton')
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resize_checkbutton = ui.get_object('resize_checkbutton')
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resize_spinbutton = ui.get_object('resize_spinbutton')
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bitrate_spinbutton.set_value(self.TARGET_BITRATE)
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resize_spinbutton.set_value(128)
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downloads_dir = GLib.get_user_special_dir(GLib.UserDirectory.DIRECTORY_DOWNLOAD)
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folderchooserbutton.set_current_folder(downloads_dir)
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response = embeddialog.run()
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if response != Gtk.ResponseType.OK:
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embeddialog.destroy()
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return
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# ok pressed - now fetch values from the dialog
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final_folder_store = folderchooserbutton.get_current_folder()
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use_album_name = use_album_name_checkbutton.get_active()
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open_filemanager = open_filemanager_checkbutton.get_active()
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convert = convert_checkbutton.get_active()
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bitrate = bitrate_spinbutton.get_value()
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toresize = resize_checkbutton.get_active()
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if toresize:
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resize = int(resize_spinbutton.get_value())
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else:
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resize = -1
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embeddialog.destroy()
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albums = {}
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total = 0
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for album in selected_albums:
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albums[album] = album.get_tracks()
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total = total + len(albums[album])
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self._track_count = 1
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def complete():
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self.album_manager.progress = 1
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if open_filemanager:
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#code taken from http://stackoverflow.com/questions/1795111/is-there-a-cross-platform-way-to-open-a-file-browser-in-python
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if sys.platform == 'win32':
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import winreg
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path = r('SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon')
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for root in (winreg.HKEY_CURRENT_USER, winreg.HKEY_LOCAL_MACHINE):
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try:
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with winreg.OpenKey(root, path) as k:
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value, regtype = winreg.QueryValueEx(k, 'Shell')
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except WindowsError:
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pass
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else:
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if regtype in (winreg.REG_SZ, winreg.REG_EXPAND_SZ):
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shell = value
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break
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else:
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shell = 'Explorer.exe'
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subprocess.Popen([shell, final_folder_store])
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elif sys.platform == 'darwin':
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subprocess.Popen(['open', final_folder_store])
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else:
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subprocess.Popen(['xdg-open', final_folder_store])
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self._albumiter = iter(albums)
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self._tracknumber = 0
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self._album = next(self._albumiter)
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def idle_call(data):
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exit_idle = True
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track = albums[self._album][self._tracknumber]
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if not process_track(self._album, track):
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exit_idle = False
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self._tracknumber = self._tracknumber + 1
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if self._tracknumber >= len(albums[self._album]):
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try:
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self._tracknumber = 0
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self._album = next(self._albumiter)
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except StopIteration:
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exit_idle = False
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if not exit_idle:
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complete()
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return exit_idle
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def process_track(album, track):
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self.album_manager.progress = self._track_count / total
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self._track_count = self._track_count + 1
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key = album.create_ext_db_key()
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finalPath = rb3compat.unquote(track.location)[7:]
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album_name = RB.search_fold(album.name)
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if use_album_name:
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folder_store = final_folder_store + '/' + album_name
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else:
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folder_store = final_folder_store
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try:
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if not os.path.exists(folder_store):
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os.makedirs(folder_store)
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if convert:
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self.convert_to_mp3(finalPath, folder_store, bitrate)
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finalPath = self._calc_mp3_filename(finalPath, folder_store)
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print(finalPath)
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else:
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shutil.copy(finalPath, folder_store)
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except IOError as err:
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print(err.args[0])
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return False
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dest = os.path.join(folder_store, os.path.basename(finalPath))
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desturi = 'file://' + rb3compat.pathname2url(dest)
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return search_tracks.embed(desturi, key, resize)
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data = None
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Gdk.threads_add_idle(GLib.PRIORITY_DEFAULT_IDLE, idle_call, data)
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def _initialise_gstreamer(self):
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if self._gstreamer_has_initialised:
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return
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self._gstreamer_has_initialised = True
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Gst.init(None)
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def on_new_decoded_pad(dbin, pad):
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decode = pad.get_parent()
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pipeline = decode.get_parent()
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convert = pipeline.get_by_name('convert')
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decode.link(convert)
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# we are going to mimic the following
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# gst-launch-1.0 filesrc location="02 - ABBA - Knowing Me, Knowing You.ogg" !
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# decodebin ! audioconvert ! audioresample ! lamemp3enc target=bitrate bitrate=128 !
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# xingmux ! id3v2mux ! filesink location="mytrack.mp3"
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converter = Gst.Pipeline.new('converter')
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source = Gst.ElementFactory.make('filesrc', None)
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decoder = Gst.ElementFactory.make('decodebin', 'decoder')
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convert = Gst.ElementFactory.make('audioconvert', 'convert')
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sample = Gst.ElementFactory.make('audioresample', 'sample')
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encoder = Gst.ElementFactory.make('lamemp3enc', 'encoder')
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encoder.set_property('target', 'bitrate')
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encoder.set_property('bitrate', self.TARGET_BITRATE)
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xing = Gst.ElementFactory.make('xingmux', 'xing') # needed to make bitrate more accurate
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mux = Gst.ElementFactory.make('id3v2mux', 'mux')
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if not mux:
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# use id3mux where not available
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mux = Gst.ElementFactory.make('id3mux', 'mux')
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sink = Gst.ElementFactory.make('filesink', 'sink')
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converter.add(source)
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converter.add(decoder)
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converter.add(convert)
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converter.add(sample)
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converter.add(encoder)
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converter.add(xing)
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converter.add(mux)
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converter.add(sink)
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Gst.Element.link(source, decoder)
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#note - a decodebin cannot be linked at compile since
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#it doesnt have source-pads (http://stackoverflow.com/questions/2993777/gstreamer-of-pythons-gst-linkerror-problem)
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decoder.connect("pad-added", on_new_decoded_pad)
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Gst.Element.link(convert, sample)
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Gst.Element.link(sample, encoder)
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Gst.Element.link(encoder, xing)
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Gst.Element.link(xing, mux)
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Gst.Element.link(mux, sink)
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self.converter = converter
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self.source = source
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self.sink = sink
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self.encoder = encoder
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def _calc_mp3_filename(self, filename, save_folder):
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finalname = os.path.basename(filename)
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finalname = finalname.rsplit('.')[0] + ".mp3"
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return save_folder + "/" + finalname
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def convert_to_mp3(self, filename, save_folder, bitrate):
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self.source.set_property('location', filename)
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self.sink.set_property('location', self._calc_mp3_filename(filename, save_folder))
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print(bitrate)
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if bitrate < 32:
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bitrate = self.TARGET_BITRATE
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self.encoder.set_property('bitrate', int(bitrate))
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print(bitrate)
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# Start playing
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ret = self.converter.set_state(Gst.State.PLAYING)
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if ret == Gst.StateChangeReturn.FAILURE:
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print("Unable to set the pipeline to the playing state.", sys.stderr)
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exit(-1)
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# Wait until error or EOS
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bus = self.converter.get_bus()
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try:
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msg = bus.timed_pop_filtered(
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Gst.CLOCK_TIME_NONE, Gst.MessageType.ERROR | Gst.MessageType.EOS)
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except:
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# for some reason in ubuntu 12.04 Gst.CLOCK_TIME_NONE fails
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msg = bus.timed_pop_filtered(
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18446744073709551615, Gst.MessageType.ERROR | Gst.MessageType.EOS)
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# Parse message
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if (msg):
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if msg.type == Gst.MessageType.ERROR:
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err, debug = msg.parse_error()
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print("Error received from element %s: %s" % (
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msg.src.get_name(), err), sys.stderr)
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print("Debugging information: %s" % debug, sys.stderr)
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elif msg.type == Gst.MessageType.EOS:
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print("End-Of-Stream reached.")
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else:
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print("Unexpected message received.", sys.stderr)
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# Free resources
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self.converter.set_state(Gst.State.NULL)
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