forked from openlp/openlp
420 lines
14 KiB
Python
420 lines
14 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.webkit` module contains our WebKit video player
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"""
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from PyQt4 import QtGui
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import logging
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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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VIDEO_CSS = u"""
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#videobackboard {
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z-index:3;
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background-color: %(bgcolor)s;
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}
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#video {
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background-color: %(bgcolor)s;
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z-index:4;
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}
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"""
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VIDEO_JS = u"""
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function show_video(state, path, volume, loop, variable_value){
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// Sometimes video.currentTime stops slightly short of video.duration and video.ended is intermittent!
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var video = document.getElementById('video');
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if(volume != null){
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video.volume = volume;
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}
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switch(state){
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case 'load':
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video.src = 'file:///' + path;
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if(loop == true) {
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video.loop = true;
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}
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video.load();
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break;
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case 'play':
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video.play();
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break;
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case 'pause':
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video.pause();
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break;
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case 'stop':
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show_video('pause');
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video.currentTime = 0;
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break;
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case 'close':
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show_video('stop');
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video.src = '';
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break;
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case 'length':
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return video.duration;
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case 'currentTime':
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return video.currentTime;
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case 'seek':
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video.currentTime = variable_value;
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break;
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case 'isEnded':
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return video.ended;
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case 'setVisible':
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video.style.visibility = variable_value;
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break;
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case 'setBackBoard':
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var back = document.getElementById('videobackboard');
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back.style.visibility = variable_value;
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break;
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}
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}
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"""
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VIDEO_HTML = u"""
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<div id="videobackboard" class="size" style="visibility:hidden"></div>
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<video id="video" class="size" style="visibility:hidden" autobuffer preload></video>
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"""
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FLASH_CSS = u"""
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#flash {
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z-index:5;
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}
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"""
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FLASH_JS = u"""
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function getFlashMovieObject(movieName)
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{
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if (window.document[movieName]){
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return window.document[movieName];
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}
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if (document.embeds && document.embeds[movieName]){
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return document.embeds[movieName];
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}
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}
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function show_flash(state, path, volume, variable_value){
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var text = document.getElementById('flash');
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var flashMovie = getFlashMovieObject("OpenLPFlashMovie");
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var src = "src = 'file:///" + path + "'";
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var view_parm = " wmode='opaque'" + " width='100%%'" + " height='100%%'";
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var swf_parm = " name='OpenLPFlashMovie'" + " autostart='true' loop='false' play='true'" +
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" hidden='false' swliveconnect='true' allowscriptaccess='always'" + " volume='" + volume + "'";
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switch(state){
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case 'load':
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text.innerHTML = "<embed " + src + view_parm + swf_parm + "/>";
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flashMovie = getFlashMovieObject("OpenLPFlashMovie");
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flashMovie.Play();
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break;
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case 'play':
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flashMovie.Play();
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break;
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case 'pause':
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flashMovie.StopPlay();
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break;
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case 'stop':
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flashMovie.StopPlay();
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tempHtml = text.innerHTML;
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text.innerHTML = '';
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text.innerHTML = tempHtml;
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break;
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case 'close':
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flashMovie.StopPlay();
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text.innerHTML = '';
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break;
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case 'length':
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return flashMovie.TotalFrames();
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case 'currentTime':
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return flashMovie.CurrentFrame();
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case 'seek':
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// flashMovie.GotoFrame(variable_value);
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break;
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case 'isEnded':
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//TODO check flash end
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return false;
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case 'setVisible':
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text.style.visibility = variable_value;
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break;
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}
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}
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"""
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FLASH_HTML = u"""
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<div id="flash" class="size" style="visibility:hidden"></div>
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"""
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VIDEO_EXT = [
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u'*.3gp',
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u'*.3gpp',
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u'*.3g2',
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u'*.3gpp2',
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u'*.aac',
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u'*.flv',
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u'*.f4a',
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u'*.f4b',
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u'*.f4p',
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u'*.f4v',
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u'*.mov',
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u'*.m4a',
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u'*.m4b',
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u'*.m4p',
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u'*.m4v',
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u'*.mkv',
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u'*.mp4',
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u'*.ogv',
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u'*.webm',
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u'*.mpg', u'*.wmv', u'*.mpeg', u'*.avi',
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u'*.swf'
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]
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AUDIO_EXT = [
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u'*.mp3',
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u'*.ogg'
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]
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class WebkitPlayer(MediaPlayer):
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"""
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A specialised version of the MediaPlayer class, which provides a QtWebKit
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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'webkit')
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self.original_name = u'WebKit'
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self.display_name = u'&WebKit'
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self.parent = parent
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self.can_background = 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 get_media_display_css(self):
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"""
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Add css style sheets to htmlbuilder
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"""
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background = QtGui.QColor(Settings().value(u'players/background color')).name()
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css = VIDEO_CSS % {u'bgcolor': background}
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return css + FLASH_CSS
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def get_media_display_javascript(self):
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"""
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Add javascript functions to htmlbuilder
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"""
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return VIDEO_JS + FLASH_JS
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def get_media_display_html(self):
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"""
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Add html code to htmlbuilder
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"""
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return VIDEO_HTML + FLASH_HTML
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def setup(self, display):
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"""
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Set up the player
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"""
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display.web_view.resize(display.size())
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display.web_view.raise_()
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self.has_own_widget = False
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def check_available(self):
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"""
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Check the availability of the media player
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"""
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return True
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def load(self, display):
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"""
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Load a video
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"""
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log.debug(u'load vid in Webkit Controller')
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controller = display.controller
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if display.has_audio and not controller.media_info.is_background:
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volume = controller.media_info.volume
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vol = float(volume) / float(100)
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else:
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vol = 0
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path = controller.media_info.file_info.absoluteFilePath()
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if controller.media_info.is_background:
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loop = u'true'
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else:
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loop = u'false'
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display.web_view.setVisible(True)
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if controller.media_info.file_info.suffix() == u'swf':
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controller.media_info.is_flash = True
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js = u'show_flash("load","%s");' % (path.replace(u'\\', u'\\\\'))
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else:
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js = u'show_video("load", "%s", %s, %s);' % (path.replace(u'\\', u'\\\\'), str(vol), loop)
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display.frame.evaluateJavaScript(js)
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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.web_view.resize(display.size())
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def play(self, display):
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"""
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Play a video
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"""
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controller = display.controller
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display.web_loaded = True
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length = 0
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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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self.set_visible(display, True)
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if controller.media_info.is_flash:
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display.frame.evaluateJavaScript(u'show_flash("play");')
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else:
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display.frame.evaluateJavaScript(u'show_video("play");')
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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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# TODO add playing check and get the correct media length
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controller.media_info.length = length
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self.state = MediaState.Playing
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display.web_view.raise_()
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return True
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def pause(self, display):
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"""
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Pause a video
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"""
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controller = display.controller
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if controller.media_info.is_flash:
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display.frame.evaluateJavaScript(u'show_flash("pause");')
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else:
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display.frame.evaluateJavaScript(u'show_video("pause");')
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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 a video
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"""
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controller = display.controller
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if controller.media_info.is_flash:
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display.frame.evaluateJavaScript(u'show_flash("stop");')
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else:
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display.frame.evaluateJavaScript(u'show_video("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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controller = display.controller
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# 1.0 is the highest value
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if display.has_audio:
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vol = float(vol) / float(100)
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if not controller.media_info.is_flash:
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display.frame.evaluateJavaScript(u'show_video(null, null, %s);' % str(vol))
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def seek(self, display, seekVal):
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"""
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Go to a position in the video
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"""
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controller = display.controller
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if controller.media_info.is_flash:
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seek = seekVal
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display.frame.evaluateJavaScript(u'show_flash("seek", null, null, "%s");' % (seek))
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else:
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seek = float(seekVal) / 1000
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display.frame.evaluateJavaScript(u'show_video("seek", null, null, null, "%f");' % (seek))
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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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controller = display.controller
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if controller.media_info.is_flash:
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display.frame.evaluateJavaScript(u'show_flash("close");')
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else:
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display.frame.evaluateJavaScript(u'show_video("close");')
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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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controller = display.controller
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if status:
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is_visible = "visible"
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else:
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is_visible = "hidden"
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if controller.media_info.is_flash:
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display.frame.evaluateJavaScript(u'show_flash("setVisible", null, null, "%s");' % (is_visible))
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else:
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display.frame.evaluateJavaScript(u'show_video("setVisible", null, null, null, "%s");' % (is_visible))
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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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controller = display.controller
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if controller.media_info.is_flash:
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currentTime = display.frame.evaluateJavaScript(u'show_flash("currentTime");')
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length = display.frame.evaluateJavaScript(u'show_flash("length");')
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else:
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if display.frame.evaluateJavaScript(u'show_video("isEnded");'):
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self.stop(display)
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currentTime = display.frame.evaluateJavaScript(u'show_video("currentTime");')
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# check if conversion was ok and value is not 'NaN'
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if currentTime and currentTime != float('inf'):
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currentTime = int(currentTime * 1000)
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length = display.frame.evaluateJavaScript(u'show_video("length");')
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# check if conversion was ok and value is not 'NaN'
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if length and length != float('inf'):
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length = int(length * 1000)
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if currentTime > 0:
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controller.media_info.length = length
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controller.seekSlider.setMaximum(length)
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if not controller.seekSlider.isSliderDown():
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controller.seekSlider.blockSignals(True)
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controller.seekSlider.setSliderPosition(currentTime)
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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', 'Webkit is a media player which runs '
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'inside a web browser. This player allows text over video to be '
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'rendered.') +
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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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