forked from openlp/openlp
333 lines
12 KiB
Python
333 lines
12 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) 2008-2017 OpenLP Developers #
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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.systemplayer` contains the system (aka QtMultimedia) player component.
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"""
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import functools
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import logging
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import mimetypes
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from PyQt5 import QtCore, QtMultimedia, QtMultimediaWidgets
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from openlp.core.common.i18n import 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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ADDITIONAL_EXT = {
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'audio/ac3': ['.ac3'],
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'audio/flac': ['.flac'],
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'audio/x-m4a': ['.m4a'],
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'audio/midi': ['.mid', '.midi'],
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'audio/x-mp3': ['.mp3'],
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'audio/mpeg': ['.mp3', '.mp2', '.mpga', '.mpega', '.m4a'],
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'audio/qcelp': ['.qcp'],
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'audio/x-wma': ['.wma'],
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'audio/x-ms-wma': ['.wma'],
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'video/x-flv': ['.flv'],
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'video/x-matroska': ['.mpv', '.mkv'],
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'video/x-wmv': ['.wmv'],
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'video/x-mpg': ['.mpg'],
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'video/mpeg': ['.mp4', '.mts', '.mov'],
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'video/x-ms-wmv': ['.wmv']
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}
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class SystemPlayer(MediaPlayer):
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"""
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A specialised version of the MediaPlayer class, which provides a QtMultimedia 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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super(SystemPlayer, self).__init__(parent, 'system')
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self.original_name = 'System'
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self.display_name = '&System'
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self.parent = parent
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self.additional_extensions = ADDITIONAL_EXT
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self.media_player = QtMultimedia.QMediaPlayer(None, QtMultimedia.QMediaPlayer.VideoSurface)
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mimetypes.init()
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media_service = self.media_player.service()
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log.info(media_service.__class__.__name__)
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# supportedMimeTypes doesn't return anything on Linux and Windows and
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# the mimetypes it returns on Mac OS X may not be playable.
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supported_codecs = self.media_player.supportedMimeTypes()
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for mime_type in supported_codecs:
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mime_type = str(mime_type)
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log.info(mime_type)
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if mime_type.startswith('audio/'):
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self._add_to_list(self.audio_extensions_list, mime_type)
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elif mime_type.startswith('video/'):
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self._add_to_list(self.video_extensions_list, mime_type)
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def _add_to_list(self, mime_type_list, mime_type):
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"""
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Add mimetypes to the provided list
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"""
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# Add all extensions which mimetypes provides us for supported types.
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extensions = mimetypes.guess_all_extensions(mime_type)
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for extension in extensions:
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ext = '*%s' % extension
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if ext not in mime_type_list:
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mime_type_list.append(ext)
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log.info('MediaPlugin: %s extensions: %s', mime_type, ' '.join(extensions))
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def disconnect_slots(self, signal):
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"""
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Safely disconnect the slots from `signal`
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"""
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try:
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signal.disconnect()
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except TypeError:
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# If disconnect() is called on a signal without slots, it throws a TypeError
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pass
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def setup(self, display):
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"""
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Set up the player widgets
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:param display:
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"""
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display.video_widget = QtMultimediaWidgets.QVideoWidget(display)
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display.video_widget.resize(display.size())
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display.media_player = QtMultimedia.QMediaPlayer(display)
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display.media_player.setVideoOutput(display.video_widget)
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display.video_widget.raise_()
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display.video_widget.hide()
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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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Check if the player is available
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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 into the display
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:param display: The display where the media is
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"""
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log.debug('load vid in System Controller')
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controller = display.controller
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volume = controller.media_info.volume
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path = controller.media_info.file_info.absoluteFilePath()
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# Check if file is playable due to mimetype filters being nonexistent on Linux and Windows
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if self.check_media(path):
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display.media_player.setMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(path)))
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self.volume(display, volume)
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return True
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else:
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return False
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def resize(self, display):
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"""
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Resize the display
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:param display: The display where the media is
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"""
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display.video_widget.resize(display.size())
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def play(self, display):
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"""
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Play the current media item
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:param display: The display where the media is
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"""
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log.info('Play the current item')
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controller = display.controller
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start_time = 0
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if display.controller.is_live:
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if self.get_live_state() != QtMultimedia.QMediaPlayer.PausedState and controller.media_info.start_time > 0:
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start_time = controller.media_info.start_time
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else:
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if self.get_preview_state() != QtMultimedia.QMediaPlayer.PausedState and \
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controller.media_info.start_time > 0:
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start_time = controller.media_info.start_time
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display.media_player.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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self.volume(display, controller.media_info.volume)
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self.disconnect_slots(display.media_player.durationChanged)
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display.media_player.durationChanged.connect(functools.partial(self.set_duration, controller))
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self.set_state(MediaState.Playing, display)
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display.video_widget.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 media item
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:param display: The display where the media is
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"""
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display.media_player.pause()
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if display.controller.is_live:
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if self.get_live_state() == QtMultimedia.QMediaPlayer.PausedState:
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self.set_state(MediaState.Paused, display)
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else:
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if self.get_preview_state() == QtMultimedia.QMediaPlayer.PausedState:
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self.set_state(MediaState.Paused, display)
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def stop(self, display):
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"""
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Stop the current media item
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:param display: The display where the media is
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"""
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display.media_player.stop()
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self.set_visible(display, False)
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self.set_state(MediaState.Stopped, display)
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def volume(self, display, volume):
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"""
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Set the volume
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:param display: The display where the media is
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:param volume: The volume to be set
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"""
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if display.has_audio:
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display.media_player.setVolume(volume)
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def seek(self, display, seek_value):
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"""
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Go to a particular point in the current media item
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:param display: The display where the media is
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:param seek_value: The where to seek to
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"""
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display.media_player.setPosition(seek_value)
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def reset(self, display):
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"""
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Reset the media player
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:param display: The display where the media is
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"""
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display.media_player.stop()
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display.media_player.setMedia(QtMultimedia.QMediaContent())
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self.set_visible(display, False)
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display.video_widget.setVisible(False)
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self.set_state(MediaState.Off, display)
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def set_visible(self, display, status):
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"""
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Set the visibility of the widget
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:param display: The display where the media is
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:param status: The visibility status to be set
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"""
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if self.has_own_widget:
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display.video_widget.setVisible(status)
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@staticmethod
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def set_duration(controller, duration):
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"""
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:param controller: the controller displaying the media
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:param duration: how long is the media
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:return:
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"""
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controller.seek_slider.setMaximum(controller.media_info.length)
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def update_ui(self, display):
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"""
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Update the UI
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:param display: The display where the media is
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"""
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if display.media_player.state() == QtMultimedia.QMediaPlayer.PausedState and self.state != MediaState.Paused:
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self.pause(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.media_player.position() > controller.media_info.end_time:
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self.stop(display)
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self.set_visible(display, False)
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if not controller.seek_slider.isSliderDown():
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controller.seek_slider.blockSignals(True)
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controller.seek_slider.setSliderPosition(display.media_player.position())
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controller.seek_slider.blockSignals(False)
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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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return ''
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def get_info(self):
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"""
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Return some info about this player
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"""
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return (translate('Media.player', 'This media player uses your operating system '
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'to provide media capabilities.') +
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'<br/> <strong>' + translate('Media.player', 'Audio') +
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'</strong><br/>' + str(self.audio_extensions_list) +
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'<br/><strong>' + translate('Media.player', 'Video') +
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'</strong><br/>' + str(self.video_extensions_list) + '<br/>')
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def check_media(self, path):
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"""
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Check if a file can be played
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Uses a separate QMediaPlayer in a thread
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:param path: Path to file to be checked
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:return: True if file can be played otherwise False
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"""
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thread = QtCore.QThread()
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check_media_worker = CheckMediaWorker(path)
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check_media_worker.setVolume(0)
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check_media_worker.moveToThread(thread)
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check_media_worker.finished.connect(thread.quit)
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thread.started.connect(check_media_worker.play)
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thread.start()
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while thread.isRunning():
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self.application.processEvents()
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return check_media_worker.result
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class CheckMediaWorker(QtMultimedia.QMediaPlayer):
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"""
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Class used to check if a media file is playable
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"""
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finished = QtCore.pyqtSignal()
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def __init__(self, path):
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super(CheckMediaWorker, self).__init__(None, QtMultimedia.QMediaPlayer.VideoSurface)
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self.result = None
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self.error.connect(functools.partial(self.signals, 'error'))
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self.mediaStatusChanged.connect(functools.partial(self.signals, 'media'))
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self.setMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(path)))
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def signals(self, origin, status):
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if origin == 'media' and status == self.BufferedMedia:
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self.result = True
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self.stop()
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self.finished.emit()
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elif origin == 'error' and status != self.NoError:
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self.result = False
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self.stop()
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self.finished.emit()
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