forked from openlp/openlp
293 lines
11 KiB
Python
293 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2013 Raoul Snyman #
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# Portions copyright (c) 2008-2013 Tim Bentley, Gerald Britton, Jonathan #
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# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, #
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# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. #
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# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, #
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# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
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# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, #
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# Frode Woldsund, Martin Zibricky, Patrick Zimmermann #
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# --------------------------------------------------------------------------- #
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# This program is free software; you can redistribute it and/or modify it #
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# under the terms of the GNU General Public License as published by the Free #
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# Software Foundation; version 2 of the License. #
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# #
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# This program is distributed in the hope that it will be useful, but WITHOUT #
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
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# more details. #
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# #
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# You should have received a copy of the GNU General Public License along #
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# with this program; if not, write to the Free Software Foundation, Inc., 59 #
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# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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###############################################################################
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"""
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The :mod:`~openlp.core.ui.media.vlcplayer` module contains our VLC component wrapper
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"""
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from datetime import datetime
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from distutils.version import LooseVersion
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import logging
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import os
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import sys
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from PyQt4 import QtGui
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from openlp.core.lib import Settings, translate
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from openlp.core.ui.media import MediaState
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from openlp.core.ui.media.mediaplayer import MediaPlayer
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log = logging.getLogger(__name__)
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VLC_AVAILABLE = False
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try:
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from openlp.core.ui.media.vendor import vlc
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VLC_AVAILABLE = bool(vlc.get_default_instance())
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except (ImportError, NameError, NotImplementedError):
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pass
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except OSError, e:
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if sys.platform.startswith('win'):
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if not isinstance(e, WindowsError) and e.winerror != 126:
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raise
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else:
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raise
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if VLC_AVAILABLE:
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try:
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version = vlc.libvlc_get_version()
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except:
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version = u'0.0.0'
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if LooseVersion(version) < LooseVersion('1.1.0'):
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VLC_AVAILABLE = False
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log.debug(u'VLC could not be loaded: %s' % version)
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AUDIO_EXT = [u'*.mp3', u'*.wav', u'*.wma', u'*.ogg']
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VIDEO_EXT = [
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u'*.3gp',
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u'*.asf', u'*.wmv',
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u'*.au',
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u'*.avi',
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u'*.flv',
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u'*.mov',
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u'*.mp4', u'*.m4v',
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u'*.ogm', u'*.ogv',
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u'*.mkv', u'*.mka',
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u'*.ts', u'*.mpg',
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u'*.mpg', u'*.mp2',
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u'*.nsc',
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u'*.nsv',
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u'*.nut',
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u'*.ra', u'*.ram', u'*.rm', u'*.rv', u'*.rmbv',
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u'*.a52', u'*.dts', u'*.aac', u'*.flac', u'*.dv', u'*.vid',
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u'*.tta', u'*.tac',
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u'*.ty',
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u'*.dts',
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u'*.xa',
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u'*.iso',
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u'*.vob',
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u'*.webm'
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]
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class VlcPlayer(MediaPlayer):
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"""
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A specialised version of the MediaPlayer class, which provides a VLC
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display.
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"""
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def __init__(self, parent):
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"""
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Constructor
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"""
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MediaPlayer.__init__(self, parent, u'vlc')
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self.original_name = u'VLC'
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self.display_name = u'&VLC'
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self.parent = parent
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self.canFolder = True
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self.audio_extensions_list = AUDIO_EXT
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self.video_extensions_list = VIDEO_EXT
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def setup(self, display):
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"""
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Set up the media player
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"""
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display.vlcWidget = QtGui.QFrame(display)
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display.vlcWidget.setFrameStyle(QtGui.QFrame.NoFrame)
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# creating a basic vlc instance
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command_line_options = u'--no-video-title-show'
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if not display.has_audio:
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command_line_options += u' --no-audio --no-video-title-show'
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if Settings().value(u'advanced/hide mouse') and display.controller.is_live:
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command_line_options += u' --mouse-hide-timeout=0'
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display.vlcInstance = vlc.Instance(command_line_options)
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# creating an empty vlc media player
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display.vlcMediaPlayer = display.vlcInstance.media_player_new()
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display.vlcWidget.resize(display.size())
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display.vlcWidget.raise_()
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display.vlcWidget.hide()
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# The media player has to be 'connected' to the QFrame.
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# (otherwise a video would be displayed in it's own window)
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# This is platform specific!
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# You have to give the id of the QFrame (or similar object)
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# to vlc, different platforms have different functions for this.
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win_id = int(display.vlcWidget.winId())
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if sys.platform == "win32":
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display.vlcMediaPlayer.set_hwnd(win_id)
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elif sys.platform == "darwin":
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# We have to use 'set_nsobject' since Qt4 on OSX uses Cocoa
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# framework and not the old Carbon.
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display.vlcMediaPlayer.set_nsobject(win_id)
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else:
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# for Linux using the X Server
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display.vlcMediaPlayer.set_xwindow(win_id)
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self.has_own_widget = True
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def check_available(self):
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"""
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Return the availability of VLC
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"""
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return VLC_AVAILABLE
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def load(self, display):
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"""
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Load a video into VLC
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"""
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log.debug(u'load vid in Vlc Controller')
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controller = display.controller
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volume = controller.media_info.volume
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file_path = str(controller.media_info.file_info.absoluteFilePath())
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path = os.path.normcase(file_path)
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# create the media
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display.vlcMedia = display.vlcInstance.media_new_path(path)
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# put the media in the media player
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display.vlcMediaPlayer.set_media(display.vlcMedia)
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# parse the metadata of the file
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display.vlcMedia.parse()
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self.volume(display, volume)
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# We need to set media_info.length during load because we want
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# to avoid start and stop the video twice. Once for real playback
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# and once to just get media length.
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#
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# Media plugin depends on knowing media length before playback.
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controller.media_info.length = int(display.vlcMediaPlayer.get_media().get_duration() / 1000)
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return True
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def media_state_wait(self, display, mediaState):
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"""
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Wait for the video to change its state
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Wait no longer than 60 seconds. (loading an iso file needs a long time)
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"""
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start = datetime.now()
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while not mediaState == display.vlcMedia.get_state():
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if display.vlcMedia.get_state() == vlc.State.Error:
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return False
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self.application.process_events()
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if (datetime.now() - start).seconds > 60:
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return False
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return True
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def resize(self, display):
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"""
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Resize the player
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"""
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display.vlcWidget.resize(display.size())
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def play(self, display):
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"""
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Play the current item
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"""
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controller = display.controller
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start_time = 0
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if self.state != MediaState.Paused and controller.media_info.start_time > 0:
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start_time = controller.media_info.start_time
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display.vlcMediaPlayer.play()
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if not self.media_state_wait(display, vlc.State.Playing):
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return False
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self.volume(display, controller.media_info.volume)
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if start_time > 0:
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self.seek(display, controller.media_info.start_time * 1000)
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controller.media_info.length = int(display.vlcMediaPlayer.get_media().get_duration() / 1000)
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controller.seekSlider.setMaximum(controller.media_info.length * 1000)
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self.state = MediaState.Playing
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display.vlcWidget.raise_()
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return True
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def pause(self, display):
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"""
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Pause the current item
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"""
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if display.vlcMedia.get_state() != vlc.State.Playing:
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return
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display.vlcMediaPlayer.pause()
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if self.media_state_wait(display, vlc.State.Paused):
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self.state = MediaState.Paused
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def stop(self, display):
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"""
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Stop the current item
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"""
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display.vlcMediaPlayer.stop()
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self.state = MediaState.Stopped
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def volume(self, display, vol):
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"""
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Set the volume
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"""
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if display.has_audio:
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display.vlcMediaPlayer.audio_set_volume(vol)
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def seek(self, display, seekVal):
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"""
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Go to a particular position
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"""
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if display.vlcMediaPlayer.is_seekable():
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display.vlcMediaPlayer.set_time(seekVal)
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def reset(self, display):
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"""
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Reset the player
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"""
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display.vlcMediaPlayer.stop()
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display.vlcWidget.setVisible(False)
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self.state = MediaState.Off
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def set_visible(self, display, status):
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"""
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Set the visibility
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"""
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if self.has_own_widget:
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display.vlcWidget.setVisible(status)
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def update_ui(self, display):
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"""
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Update the UI
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"""
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# Stop video if playback is finished.
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if display.vlcMedia.get_state() == vlc.State.Ended:
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self.stop(display)
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controller = display.controller
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if controller.media_info.end_time > 0:
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if display.vlcMediaPlayer.get_time() > controller.media_info.end_time * 1000:
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self.stop(display)
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self.set_visible(display, False)
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if not controller.seekSlider.isSliderDown():
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controller.seekSlider.blockSignals(True)
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controller.seekSlider.setSliderPosition(display.vlcMediaPlayer.get_time())
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controller.seekSlider.blockSignals(False)
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def get_info(self):
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"""
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Return some information about this player
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"""
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return(translate('Media.player', 'VLC is an external player which '
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'supports a number of different formats.') +
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u'<br/> <strong>' + translate('Media.player', 'Audio') +
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u'</strong><br/>' + unicode(AUDIO_EXT) + u'<br/><strong>' +
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translate('Media.player', 'Video') + u'</strong><br/>' +
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unicode(VIDEO_EXT) + u'<br/>')
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