698 lines
22 KiB
Python
698 lines
22 KiB
Python
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'''
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Video player
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============
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.. versionadded:: 1.2.0
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The video player widget can be used to play video and let the user control the
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play/pausing, volume and position. The widget cannot be customized much because
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of the complex assembly of numerous base widgets.
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.. image:: images/videoplayer.jpg
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:align: center
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Annotations
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-----------
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If you want to display text at a specific time and for a certain duration,
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consider annotations. An annotation file has a ".jsa" extension. The player
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will automatically load the associated annotation file if it exists.
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An annotation file is JSON-based, providing a list of label dictionary items.
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The key and value must match one of the :class:`VideoPlayerAnnotation` items.
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For example, here is a short version of a jsa file that you can find in
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`examples/widgets/cityCC0.jsa`::
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[
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{"start": 0, "duration": 2,
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"text": "This is an example of annotation"},
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{"start": 2, "duration": 2,
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"bgcolor": [0.5, 0.2, 0.4, 0.5],
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"text": "You can change the background color"}
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]
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For our cityCC0.mpg example, the result will be:
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.. image:: images/videoplayer-annotation.jpg
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:align: center
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If you want to experiment with annotation files, test with::
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python -m kivy.uix.videoplayer examples/widgets/cityCC0.mpg
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Fullscreen
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----------
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The video player can play the video in fullscreen, if
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:attr:`VideoPlayer.allow_fullscreen` is activated by a double-tap on
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the video. By default, if the video is smaller than the Window, it will be not
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stretched.
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You can allow stretching by passing custom options to a
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:class:`VideoPlayer` instance::
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player = VideoPlayer(source='myvideo.avi', state='play',
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options={'fit_mode': 'contain'})
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End-of-stream behavior
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----------------------
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You can specify what happens when the video has finished playing by passing an
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`eos` (end of stream) directive to the underlying
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:class:`~kivy.core.video.VideoBase` class. `eos` can be one of 'stop', 'pause'
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or 'loop' and defaults to 'stop'. For example, in order to loop the video::
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player = VideoPlayer(source='myvideo.avi', state='play',
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options={'eos': 'loop'})
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.. note::
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The `eos` property of the VideoBase class is a string specifying the
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end-of-stream behavior. This property differs from the `eos`
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properties of the :class:`VideoPlayer` and
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:class:`~kivy.uix.video.Video` classes, whose `eos`
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property is simply a boolean indicating that the end of the file has
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been reached.
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'''
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__all__ = ('VideoPlayer', 'VideoPlayerAnnotation')
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from json import load
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from os.path import exists
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from kivy.properties import ObjectProperty, StringProperty, BooleanProperty, \
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NumericProperty, DictProperty, OptionProperty
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from kivy.animation import Animation
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from kivy.uix.gridlayout import GridLayout
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from kivy.uix.floatlayout import FloatLayout
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from kivy.uix.progressbar import ProgressBar
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from kivy.uix.label import Label
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from kivy.uix.video import Video
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from kivy.uix.video import Image
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from kivy.factory import Factory
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from kivy.logger import Logger
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from kivy.clock import Clock
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class VideoPlayerVolume(Image):
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video = ObjectProperty(None)
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def on_touch_down(self, touch):
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if not self.collide_point(*touch.pos):
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return False
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touch.grab(self)
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# save the current volume and delta to it
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touch.ud[self.uid] = [self.video.volume, 0]
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return True
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def on_touch_move(self, touch):
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if touch.grab_current is not self:
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return
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# calculate delta
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dy = abs(touch.y - touch.oy)
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if dy > 10:
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dy = min(dy - 10, 100)
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touch.ud[self.uid][1] = dy
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self.video.volume = dy / 100.
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return True
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def on_touch_up(self, touch):
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if touch.grab_current is not self:
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return
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touch.ungrab(self)
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dy = abs(touch.y - touch.oy)
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if dy < 10:
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if self.video.volume > 0:
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self.video.volume = 0
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else:
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self.video.volume = 1.
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class VideoPlayerPlayPause(Image):
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video = ObjectProperty(None)
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def on_touch_down(self, touch):
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'''.. versionchanged:: 1.4.0'''
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if self.collide_point(*touch.pos):
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if self.video.state == 'play':
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self.video.state = 'pause'
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else:
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self.video.state = 'play'
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return True
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class VideoPlayerStop(Image):
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video = ObjectProperty(None)
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def on_touch_down(self, touch):
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if self.collide_point(*touch.pos):
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self.video.state = 'stop'
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self.video.position = 0
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return True
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class VideoPlayerProgressBar(ProgressBar):
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video = ObjectProperty(None)
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seek = NumericProperty(None, allownone=True)
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alpha = NumericProperty(1.)
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def __init__(self, **kwargs):
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super(VideoPlayerProgressBar, self).__init__(**kwargs)
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self.bubble = Factory.Bubble(size=(50, 44))
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self.bubble_label = Factory.Label(text='0:00')
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self.bubble.add_widget(self.bubble_label)
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self.add_widget(self.bubble)
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update = self._update_bubble
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fbind = self.fbind
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fbind('pos', update)
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fbind('size', update)
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fbind('seek', update)
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def on_video(self, instance, value):
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self.video.bind(position=self._update_bubble,
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state=self._showhide_bubble)
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def on_touch_down(self, touch):
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if not self.collide_point(*touch.pos):
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return
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self._show_bubble()
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touch.grab(self)
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self._update_seek(touch.x)
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return True
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def on_touch_move(self, touch):
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if touch.grab_current is not self:
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return
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self._update_seek(touch.x)
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return True
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def on_touch_up(self, touch):
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if touch.grab_current is not self:
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return
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touch.ungrab(self)
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if self.seek:
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self.video.seek(self.seek)
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self.seek = None
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self._hide_bubble()
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return True
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def _update_seek(self, x):
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if self.width == 0:
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return
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x = max(self.x, min(self.right, x)) - self.x
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self.seek = x / float(self.width)
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def _show_bubble(self):
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self.alpha = 1
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Animation.stop_all(self, 'alpha')
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def _hide_bubble(self):
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self.alpha = 1.
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Animation(alpha=0, d=4, t='in_out_expo').start(self)
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def on_alpha(self, instance, value):
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self.bubble.background_color = (1, 1, 1, value)
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self.bubble_label.color = (1, 1, 1, value)
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def _update_bubble(self, *l):
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seek = self.seek
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if self.seek is None:
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if self.video.duration == 0:
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seek = 0
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else:
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seek = self.video.position / self.video.duration
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# convert to minutes:seconds
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d = self.video.duration * seek
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minutes = int(d / 60)
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seconds = int(d - (minutes * 60))
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# fix bubble label & position
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self.bubble_label.text = '%d:%02d' % (minutes, seconds)
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self.bubble.center_x = self.x + seek * self.width
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self.bubble.y = self.top
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def _showhide_bubble(self, instance, value):
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if value == 'play':
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self._hide_bubble()
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else:
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self._show_bubble()
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class VideoPlayerPreview(FloatLayout):
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source = ObjectProperty(None)
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video = ObjectProperty(None)
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click_done = BooleanProperty(False)
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def on_touch_down(self, touch):
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if self.collide_point(*touch.pos) and not self.click_done:
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self.click_done = True
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self.video.state = 'play'
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return True
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class VideoPlayerAnnotation(Label):
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'''Annotation class used for creating annotation labels.
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Additional keys are available:
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* bgcolor: [r, g, b, a] - background color of the text box
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* bgsource: 'filename' - background image used for the background text box
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* border: (n, e, s, w) - border used for the background image
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'''
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start = NumericProperty(0)
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'''Start time of the annotation.
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:attr:`start` is a :class:`~kivy.properties.NumericProperty` and defaults
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to 0.
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'''
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duration = NumericProperty(1)
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'''Duration of the annotation.
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:attr:`duration` is a :class:`~kivy.properties.NumericProperty` and
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defaults to 1.
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'''
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annotation = DictProperty({})
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def on_annotation(self, instance, ann):
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for key, value in ann.items():
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setattr(self, key, value)
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class VideoPlayer(GridLayout):
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'''VideoPlayer class. See module documentation for more information.
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'''
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source = StringProperty('')
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'''Source of the video to read.
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:attr:`source` is a :class:`~kivy.properties.StringProperty` and
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defaults to ''.
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.. versionchanged:: 1.4.0
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'''
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thumbnail = StringProperty('')
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'''Thumbnail of the video to show. If None, VideoPlayer will try to find
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the thumbnail from the :attr:`source` + '.png'.
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:attr:`thumbnail` a :class:`~kivy.properties.StringProperty` and defaults
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to ''.
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.. versionchanged:: 1.4.0
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'''
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duration = NumericProperty(-1)
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'''Duration of the video. The duration defaults to -1 and is set to the
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real duration when the video is loaded.
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:attr:`duration` is a :class:`~kivy.properties.NumericProperty` and
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defaults to -1.
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'''
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position = NumericProperty(0)
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'''Position of the video between 0 and :attr:`duration`. The position
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defaults to -1 and is set to the real position when the video is loaded.
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:attr:`position` is a :class:`~kivy.properties.NumericProperty` and
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defaults to -1.
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'''
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volume = NumericProperty(1.0)
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'''Volume of the video in the range 0-1. 1 means full volume and 0 means
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mute.
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:attr:`volume` is a :class:`~kivy.properties.NumericProperty` and defaults
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to 1.
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'''
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state = OptionProperty('stop', options=('play', 'pause', 'stop'))
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'''String, indicates whether to play, pause, or stop the video::
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# start playing the video at creation
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video = VideoPlayer(source='movie.mkv', state='play')
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# create the video, and start later
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video = VideoPlayer(source='movie.mkv')
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# and later
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video.state = 'play'
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:attr:`state` is an :class:`~kivy.properties.OptionProperty` and defaults
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to 'stop'.
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'''
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play = BooleanProperty(False, deprecated=True)
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'''
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.. deprecated:: 1.4.0
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Use :attr:`state` instead.
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Boolean, indicates whether the video is playing or not. You can start/stop
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the video by setting this property::
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# start playing the video at creation
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video = VideoPlayer(source='movie.mkv', play=True)
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# create the video, and start later
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video = VideoPlayer(source='movie.mkv')
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# and later
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video.play = True
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:attr:`play` is a :class:`~kivy.properties.BooleanProperty` and defaults
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to False.
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'''
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image_overlay_play = StringProperty(
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'atlas://data/images/defaulttheme/player-play-overlay')
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'''Image filename used to show a "play" overlay when the video has not yet
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started.
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:attr:`image_overlay_play` is a
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:class:`~kivy.properties.StringProperty` and
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defaults to 'atlas://data/images/defaulttheme/player-play-overlay'.
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'''
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image_loading = StringProperty('data/images/image-loading.zip')
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'''Image filename used when the video is loading.
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:attr:`image_loading` is a :class:`~kivy.properties.StringProperty` and
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defaults to 'data/images/image-loading.zip'.
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'''
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image_play = StringProperty(
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'atlas://data/images/defaulttheme/media-playback-start')
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'''Image filename used for the "Play" button.
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:attr:`image_play` is a :class:`~kivy.properties.StringProperty` and
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defaults to 'atlas://data/images/defaulttheme/media-playback-start'.
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|
|
'''
|
||
|
|
|
||
|
|
image_stop = StringProperty(
|
||
|
|
'atlas://data/images/defaulttheme/media-playback-stop')
|
||
|
|
'''Image filename used for the "Stop" button.
|
||
|
|
|
||
|
|
:attr:`image_stop` is a :class:`~kivy.properties.StringProperty` and
|
||
|
|
defaults to 'atlas://data/images/defaulttheme/media-playback-stop'.
|
||
|
|
'''
|
||
|
|
|
||
|
|
image_pause = StringProperty(
|
||
|
|
'atlas://data/images/defaulttheme/media-playback-pause')
|
||
|
|
'''Image filename used for the "Pause" button.
|
||
|
|
|
||
|
|
:attr:`image_pause` is a :class:`~kivy.properties.StringProperty` and
|
||
|
|
defaults to 'atlas://data/images/defaulttheme/media-playback-pause'.
|
||
|
|
'''
|
||
|
|
|
||
|
|
image_volumehigh = StringProperty(
|
||
|
|
'atlas://data/images/defaulttheme/audio-volume-high')
|
||
|
|
'''Image filename used for the volume icon when the volume is high.
|
||
|
|
|
||
|
|
:attr:`image_volumehigh` is a :class:`~kivy.properties.StringProperty` and
|
||
|
|
defaults to 'atlas://data/images/defaulttheme/audio-volume-high'.
|
||
|
|
'''
|
||
|
|
|
||
|
|
image_volumemedium = StringProperty(
|
||
|
|
'atlas://data/images/defaulttheme/audio-volume-medium')
|
||
|
|
'''Image filename used for the volume icon when the volume is medium.
|
||
|
|
|
||
|
|
:attr:`image_volumemedium` is a :class:`~kivy.properties.StringProperty`
|
||
|
|
and defaults to 'atlas://data/images/defaulttheme/audio-volume-medium'.
|
||
|
|
'''
|
||
|
|
|
||
|
|
image_volumelow = StringProperty(
|
||
|
|
'atlas://data/images/defaulttheme/audio-volume-low')
|
||
|
|
'''Image filename used for the volume icon when the volume is low.
|
||
|
|
|
||
|
|
:attr:`image_volumelow` is a :class:`~kivy.properties.StringProperty`
|
||
|
|
and defaults to 'atlas://data/images/defaulttheme/audio-volume-low'.
|
||
|
|
'''
|
||
|
|
|
||
|
|
image_volumemuted = StringProperty(
|
||
|
|
'atlas://data/images/defaulttheme/audio-volume-muted')
|
||
|
|
'''Image filename used for the volume icon when the volume is muted.
|
||
|
|
|
||
|
|
:attr:`image_volumemuted` is a :class:`~kivy.properties.StringProperty`
|
||
|
|
and defaults to 'atlas://data/images/defaulttheme/audio-volume-muted'.
|
||
|
|
'''
|
||
|
|
|
||
|
|
annotations = StringProperty('')
|
||
|
|
'''If set, it will be used for reading annotations box.
|
||
|
|
|
||
|
|
:attr:`annotations` is a :class:`~kivy.properties.StringProperty`
|
||
|
|
and defaults to ''.
|
||
|
|
'''
|
||
|
|
|
||
|
|
fullscreen = BooleanProperty(False)
|
||
|
|
'''Switch to fullscreen view. This should be used with care. When
|
||
|
|
activated, the widget will remove itself from its parent, remove all
|
||
|
|
children from the window and will add itself to it. When fullscreen is
|
||
|
|
unset, all the previous children are restored and the widget is restored to
|
||
|
|
its previous parent.
|
||
|
|
|
||
|
|
.. warning::
|
||
|
|
|
||
|
|
The re-add operation doesn't care about the index position of its
|
||
|
|
children within the parent.
|
||
|
|
|
||
|
|
:attr:`fullscreen` is a :class:`~kivy.properties.BooleanProperty`
|
||
|
|
and defaults to False.
|
||
|
|
'''
|
||
|
|
|
||
|
|
allow_fullscreen = BooleanProperty(True)
|
||
|
|
'''By default, you can double-tap on the video to make it fullscreen. Set
|
||
|
|
this property to False to prevent this behavior.
|
||
|
|
|
||
|
|
:attr:`allow_fullscreen` is a :class:`~kivy.properties.BooleanProperty`
|
||
|
|
defaults to True.
|
||
|
|
'''
|
||
|
|
|
||
|
|
options = DictProperty({})
|
||
|
|
'''Optional parameters can be passed to a :class:`~kivy.uix.video.Video`
|
||
|
|
instance with this property.
|
||
|
|
|
||
|
|
:attr:`options` a :class:`~kivy.properties.DictProperty` and
|
||
|
|
defaults to {}.
|
||
|
|
'''
|
||
|
|
|
||
|
|
# internals
|
||
|
|
container = ObjectProperty(None)
|
||
|
|
|
||
|
|
_video_load_ev = None
|
||
|
|
|
||
|
|
def __init__(self, **kwargs):
|
||
|
|
self._video = None
|
||
|
|
self._image = None
|
||
|
|
self._annotations = ''
|
||
|
|
self._annotations_labels = []
|
||
|
|
super(VideoPlayer, self).__init__(**kwargs)
|
||
|
|
update_thumbnail = self._update_thumbnail
|
||
|
|
update_annotations = self._update_annotations
|
||
|
|
fbind = self.fbind
|
||
|
|
fbind('thumbnail', update_thumbnail)
|
||
|
|
fbind('annotations', update_annotations)
|
||
|
|
|
||
|
|
if self.source:
|
||
|
|
self._trigger_video_load()
|
||
|
|
|
||
|
|
def _trigger_video_load(self, *largs):
|
||
|
|
ev = self._video_load_ev
|
||
|
|
if ev is None:
|
||
|
|
ev = self._video_load_ev = Clock.schedule_once(self._do_video_load,
|
||
|
|
-1)
|
||
|
|
ev()
|
||
|
|
|
||
|
|
def _try_load_default_thumbnail(self, *largs):
|
||
|
|
if not self.thumbnail:
|
||
|
|
filename = self.source.rsplit('.', 1)
|
||
|
|
thumbnail = filename[0] + '.png'
|
||
|
|
if exists(thumbnail):
|
||
|
|
self._load_thumbnail(thumbnail)
|
||
|
|
|
||
|
|
def _try_load_default_annotations(self, *largs):
|
||
|
|
if not self.annotations:
|
||
|
|
filename = self.source.rsplit('.', 1)
|
||
|
|
annotations = filename[0] + '.jsa'
|
||
|
|
if exists(annotations):
|
||
|
|
self._load_annotations(annotations)
|
||
|
|
|
||
|
|
def on_source(self, instance, value):
|
||
|
|
# By default, VideoPlayer should look for thumbnail and annotations
|
||
|
|
# with the same filename (except extension) of the source (video) file.
|
||
|
|
Clock.schedule_once(self._try_load_default_thumbnail, -1)
|
||
|
|
Clock.schedule_once(self._try_load_default_annotations, -1)
|
||
|
|
if self._video is not None:
|
||
|
|
self._video.unload()
|
||
|
|
self._video = None
|
||
|
|
if value:
|
||
|
|
self._trigger_video_load()
|
||
|
|
|
||
|
|
def _update_thumbnail(self, *largs):
|
||
|
|
self._load_thumbnail(self.thumbnail)
|
||
|
|
|
||
|
|
def _update_annotations(self, *largs):
|
||
|
|
self._load_annotations(self.annotations)
|
||
|
|
|
||
|
|
def on_image_overlay_play(self, instance, value):
|
||
|
|
self._image.image_overlay_play = value
|
||
|
|
|
||
|
|
def on_image_loading(self, instance, value):
|
||
|
|
self._image.image_loading = value
|
||
|
|
|
||
|
|
def _load_thumbnail(self, thumbnail):
|
||
|
|
if not self.container:
|
||
|
|
return
|
||
|
|
self.container.clear_widgets()
|
||
|
|
if thumbnail:
|
||
|
|
self._image = VideoPlayerPreview(source=thumbnail, video=self)
|
||
|
|
self.container.add_widget(self._image)
|
||
|
|
|
||
|
|
def _load_annotations(self, annotations):
|
||
|
|
if not self.container:
|
||
|
|
return
|
||
|
|
self._annotations_labels = []
|
||
|
|
if annotations:
|
||
|
|
with open(annotations, 'r') as fd:
|
||
|
|
self._annotations = load(fd)
|
||
|
|
if self._annotations:
|
||
|
|
for ann in self._annotations:
|
||
|
|
self._annotations_labels.append(
|
||
|
|
VideoPlayerAnnotation(annotation=ann))
|
||
|
|
|
||
|
|
def on_state(self, instance, value):
|
||
|
|
if self._video is not None:
|
||
|
|
self._video.state = value
|
||
|
|
|
||
|
|
def _set_state(self, instance, value):
|
||
|
|
self.state = value
|
||
|
|
|
||
|
|
def _do_video_load(self, *largs):
|
||
|
|
self._video = Video(source=self.source, state=self.state,
|
||
|
|
volume=self.volume, pos_hint={'x': 0, 'y': 0},
|
||
|
|
**self.options)
|
||
|
|
self._video.bind(texture=self._play_started,
|
||
|
|
duration=self.setter('duration'),
|
||
|
|
position=self.setter('position'),
|
||
|
|
volume=self.setter('volume'),
|
||
|
|
state=self._set_state)
|
||
|
|
|
||
|
|
def on_play(self, instance, value):
|
||
|
|
value = 'play' if value else 'stop'
|
||
|
|
return self.on_state(instance, value)
|
||
|
|
|
||
|
|
def on_volume(self, instance, value):
|
||
|
|
if not self._video:
|
||
|
|
return
|
||
|
|
self._video.volume = value
|
||
|
|
|
||
|
|
def on_position(self, instance, value):
|
||
|
|
labels = self._annotations_labels
|
||
|
|
if not labels:
|
||
|
|
return
|
||
|
|
for label in labels:
|
||
|
|
start = label.start
|
||
|
|
duration = label.duration
|
||
|
|
if start > value or (start + duration) < value:
|
||
|
|
if label.parent:
|
||
|
|
label.parent.remove_widget(label)
|
||
|
|
elif label.parent is None:
|
||
|
|
self.container.add_widget(label)
|
||
|
|
|
||
|
|
def seek(self, percent, precise=True):
|
||
|
|
'''Change the position to a percentage (strictly, a proportion)
|
||
|
|
of duration.
|
||
|
|
|
||
|
|
:Parameters:
|
||
|
|
`percent`: float or int
|
||
|
|
Position to seek as a proportion of total duration, must
|
||
|
|
be between 0-1.
|
||
|
|
`precise`: bool, defaults to True
|
||
|
|
Precise seeking is slower, but seeks to exact requested
|
||
|
|
percent.
|
||
|
|
|
||
|
|
.. warning::
|
||
|
|
Calling seek() before the video is loaded has no effect.
|
||
|
|
|
||
|
|
.. versionadded:: 1.2.0
|
||
|
|
|
||
|
|
.. versionchanged:: 1.10.1
|
||
|
|
The `precise` keyword argument has been added.
|
||
|
|
'''
|
||
|
|
if not self._video:
|
||
|
|
return
|
||
|
|
self._video.seek(percent, precise=precise)
|
||
|
|
|
||
|
|
def _play_started(self, instance, value):
|
||
|
|
self.container.clear_widgets()
|
||
|
|
self.container.add_widget(self._video)
|
||
|
|
|
||
|
|
def on_touch_down(self, touch):
|
||
|
|
if not self.collide_point(*touch.pos):
|
||
|
|
return False
|
||
|
|
if touch.is_double_tap and self.allow_fullscreen:
|
||
|
|
self.fullscreen = not self.fullscreen
|
||
|
|
return True
|
||
|
|
return super(VideoPlayer, self).on_touch_down(touch)
|
||
|
|
|
||
|
|
def on_fullscreen(self, instance, value):
|
||
|
|
window = self.get_parent_window()
|
||
|
|
if not window:
|
||
|
|
Logger.warning('VideoPlayer: Cannot switch to fullscreen, '
|
||
|
|
'window not found.')
|
||
|
|
if value:
|
||
|
|
self.fullscreen = False
|
||
|
|
return
|
||
|
|
if not self.parent:
|
||
|
|
Logger.warning('VideoPlayer: Cannot switch to fullscreen, '
|
||
|
|
'no parent.')
|
||
|
|
if value:
|
||
|
|
self.fullscreen = False
|
||
|
|
return
|
||
|
|
|
||
|
|
if value:
|
||
|
|
self._fullscreen_state = state = {
|
||
|
|
'parent': self.parent,
|
||
|
|
'pos': self.pos,
|
||
|
|
'size': self.size,
|
||
|
|
'pos_hint': self.pos_hint,
|
||
|
|
'size_hint': self.size_hint,
|
||
|
|
'window_children': window.children[:]}
|
||
|
|
|
||
|
|
# remove all window children
|
||
|
|
for child in window.children[:]:
|
||
|
|
window.remove_widget(child)
|
||
|
|
|
||
|
|
# put the video in fullscreen
|
||
|
|
if state['parent'] is not window:
|
||
|
|
state['parent'].remove_widget(self)
|
||
|
|
window.add_widget(self)
|
||
|
|
|
||
|
|
# ensure the video widget is in 0, 0, and the size will be
|
||
|
|
# readjusted
|
||
|
|
self.pos = (0, 0)
|
||
|
|
self.size = (100, 100)
|
||
|
|
self.pos_hint = {}
|
||
|
|
self.size_hint = (1, 1)
|
||
|
|
else:
|
||
|
|
state = self._fullscreen_state
|
||
|
|
window.remove_widget(self)
|
||
|
|
for child in state['window_children']:
|
||
|
|
window.add_widget(child)
|
||
|
|
self.pos_hint = state['pos_hint']
|
||
|
|
self.size_hint = state['size_hint']
|
||
|
|
self.pos = state['pos']
|
||
|
|
self.size = state['size']
|
||
|
|
if state['parent'] is not window:
|
||
|
|
state['parent'].add_widget(self)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
import sys
|
||
|
|
from kivy.base import runTouchApp
|
||
|
|
player = VideoPlayer(source=sys.argv[1])
|
||
|
|
runTouchApp(player)
|
||
|
|
if player:
|
||
|
|
player.state = 'stop'
|