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openlp/openlp/core/ui/media/vlcplayer.py

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# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2014 Raoul Snyman #
# Portions copyright (c) 2008-2014 Tim Bentley, Gerald Britton, Jonathan #
# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, #
# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. #
# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, #
# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, #
# Frode Woldsund, Martin Zibricky #
# --------------------------------------------------------------------------- #
# 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 2 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 #
###############################################################################
from datetime import datetime
from distutils.version import LooseVersion
import logging
import os
import sys
from PyQt4 import QtCore, QtGui
from openlp.core.lib import Receiver
from openlp.core.lib.settings import Settings
from openlp.core.lib.mediaplayer import MediaPlayer
from openlp.core.ui.media import MediaState
log = logging.getLogger(__name__)
VLC_AVAILABLE = False
try:
import vlc
VLC_AVAILABLE = bool(vlc.get_default_instance())
except (ImportError, NameError, NotImplementedError):
pass
except OSError, e:
if sys.platform.startswith('win'):
if not isinstance(e, WindowsError) and e.winerror != 126:
raise
else:
raise
if VLC_AVAILABLE:
try:
version = vlc.libvlc_get_version()
except:
version = u'0.0.0'
if LooseVersion(version) < LooseVersion('1.1.0'):
VLC_AVAILABLE = False
log.debug(u'VLC could not be loaded: %s' % version)
AUDIO_EXT = [u'*.mp3', u'*.wav', u'*.wma', u'*.ogg']
VIDEO_EXT = [
u'*.3gp',
u'*.asf', u'*.wmv',
u'*.au',
u'*.avi',
u'*.flv',
u'*.mov',
u'*.mp4', u'*.m4v',
u'*.ogm', u'*.ogv',
u'*.mkv', u'*.mka',
u'*.ts', u'*.mpg',
u'*.mpg', u'*.mp2',
u'*.nsc',
u'*.nsv',
u'*.nut',
u'*.ra', u'*.ram', u'*.rm', u'*.rv' ,u'*.rmbv',
u'*.a52', u'*.dts', u'*.aac', u'*.flac' ,u'*.dv', u'*.vid',
u'*.tta', u'*.tac',
u'*.ty',
u'*.dts',
u'*.xa',
u'*.iso',
u'*.vob',
u'*.webm',
u'*.divx'
]
class VlcPlayer(MediaPlayer):
"""
A specialised version of the MediaPlayer class, which provides a VLC
display.
"""
def __init__(self, parent):
MediaPlayer.__init__(self, parent, u'vlc')
self.original_name = u'VLC'
self.display_name = u'&VLC'
self.parent = parent
self.canFolder = True
self.audio_extensions_list = AUDIO_EXT
self.video_extensions_list = VIDEO_EXT
def setup(self, display):
display.vlcWidget = QtGui.QFrame(display)
# creating a basic vlc instance
command_line_options = u'--no-video-title-show'
if not display.hasAudio:
command_line_options += u' --no-audio --no-video-title-show'
if Settings().value(u'advanced/hide mouse',
QtCore.QVariant(False)).toBool() and \
display.controller.isLive:
command_line_options += u' --mouse-hide-timeout=0'
display.vlcInstance = vlc.Instance(command_line_options)
display.vlcInstance.set_log_verbosity(2)
# creating an empty vlc media player
display.vlcMediaPlayer = display.vlcInstance.media_player_new()
display.vlcWidget.resize(display.size())
display.vlcWidget.raise_()
display.vlcWidget.hide()
# The media player has to be 'connected' to the QFrame.
# (otherwise a video would be displayed in it's own window)
# This is platform specific!
# You have to give the id of the QFrame (or similar object)
# to vlc, different platforms have different functions for this.
win_id = int(display.vlcWidget.winId())
if sys.platform == "win32":
display.vlcMediaPlayer.set_hwnd(win_id)
elif sys.platform == "darwin":
# We have to use 'set_nsobject' since Qt4 on OSX uses Cocoa
# framework and not the old Carbon.
display.vlcMediaPlayer.set_nsobject(win_id)
else:
# for Linux using the X Server
display.vlcMediaPlayer.set_xwindow(win_id)
self.hasOwnWidget = True
def check_available(self):
return VLC_AVAILABLE
def load(self, display):
log.debug(u'load vid in Vlc Controller')
controller = display.controller
volume = controller.media_info.volume
file_path = str(
controller.media_info.file_info.absoluteFilePath().toUtf8())
path = os.path.normcase(file_path)
# create the media
display.vlcMedia = display.vlcInstance.media_new_path(path)
# put the media in the media player
display.vlcMediaPlayer.set_media(display.vlcMedia)
# parse the metadata of the file
display.vlcMedia.parse()
self.volume(display, volume)
# We need to set media_info.length during load because we want
# to avoid start and stop the video twice. Once for real playback
# and once to just get media length.
#
# Media plugin depends on knowing media length before playback.
controller.media_info.length = \
int(display.vlcMediaPlayer.get_media().get_duration() / 1000)
return True
def media_state_wait(self, display, mediaState):
"""
Wait for the video to change its state
Wait no longer than 60 seconds. (loading an iso file needs a long time)
"""
start = datetime.now()
while not mediaState == display.vlcMedia.get_state():
if display.vlcMedia.get_state() == vlc.State.Error:
return False
Receiver.send_message(u'openlp_process_events')
if (datetime.now() - start).seconds > 60:
return False
return True
def resize(self, display):
display.vlcWidget.resize(display.size())
def play(self, display):
controller = display.controller
start_time = 0
if controller.media_info.start_time > 0:
start_time = controller.media_info.start_time
display.vlcMediaPlayer.play()
if not self.media_state_wait(display, vlc.State.Playing):
return False
if start_time > 0:
self.seek(display, controller.media_info.start_time * 1000)
controller.media_info.length = \
int(display.vlcMediaPlayer.get_media().get_duration() / 1000)
controller.seekSlider.setMaximum(controller.media_info.length * 1000)
self.state = MediaState.Playing
display.vlcWidget.raise_()
return True
def pause(self, display):
if display.vlcMedia.get_state() != vlc.State.Playing:
return
display.vlcMediaPlayer.pause()
if self.media_state_wait(display, vlc.State.Paused):
self.state = MediaState.Paused
def stop(self, display):
display.vlcMediaPlayer.stop()
self.state = MediaState.Stopped
def volume(self, display, vol):
if display.hasAudio:
display.vlcMediaPlayer.audio_set_volume(vol)
def seek(self, display, seekVal):
if display.vlcMediaPlayer.is_seekable():
display.vlcMediaPlayer.set_time(seekVal)
def reset(self, display):
display.vlcMediaPlayer.stop()
display.vlcWidget.setVisible(False)
self.state = MediaState.Off
def set_visible(self, display, status):
if self.hasOwnWidget:
display.vlcWidget.setVisible(status)
def update_ui(self, display):
# Stop video if playback is finished.
if display.vlcMedia.get_state() == vlc.State.Ended:
self.stop(display)
controller = display.controller
if controller.media_info.end_time > 0:
if display.vlcMediaPlayer.get_time() > \
controller.media_info.end_time * 1000:
self.stop(display)
self.set_visible(display, False)
if not controller.seekSlider.isSliderDown():
controller.seekSlider.setSliderPosition( \
display.vlcMediaPlayer.get_time())
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