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#Copyright (c) 2009, Walter Bender (on behalf of Sugar Labs)
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.
"""
Video and audio playback
Based on code snippets from
http://wiki.sugarlabs.org/go/Development_Team/Almanac/GStreamer
"""
import gtk
import pygtk
pygtk.require('2.0')
import pygst
pygst.require('0.10')
import gst
import gst.interfaces
import gobject
import time
gobject.threads_init()
try:
from sugar.datastore import datastore
except:
# probably launched from outside of Sugar
pass
from talogo import *
class Gplay:
def __init__(self):
self.window = None
self.playing = False
self.player = gst.element_factory_make("playbin", "playbin")
xis = gst.element_factory_make("xvimagesink", "xvimagesink")
self.player.set_property("video-sink", xis)
bus = self.player.get_bus()
bus.enable_sync_message_emission()
bus.add_signal_watch()
self.SYNC_ID = bus.connect('sync-message::element', \
self._onSyncMessageCb)
def _onSyncMessageCb(self, bus, message):
if message.structure is None:
return True
if message.structure.get_name() == 'prepare-xwindow-id':
self.window.set_sink(message.src)
message.src.set_property('force-aspect-ratio', True)
return True
def setFile(self, path):
uri = "file://" + str( path )
if (self.player.get_property('uri') == uri):
self.seek(gst.SECOND*0)
return
self.player.set_state(gst.STATE_READY)
self.player.set_property('uri', uri)
ext = uri[len(uri)-3:]
if (ext == "jpg"):
self.pause()
else:
self.play()
def queryPosition(self):
#"Returns a (position, duration) tuple"
try:
position, format = self.player.query_position(gst.FORMAT_TIME)
except:
position = gst.CLOCK_TIME_NONE
try:
duration, format = self.player.query_duration(gst.FORMAT_TIME)
except:
duration = gst.CLOCK_TIME_NONE
return (position, duration)
def seek(self, time):
event = gst.event_new_seek(1.0,\
gst.FORMAT_TIME,\
gst.SEEK_FLAG_FLUSH|gst.SEEK_FLAG_ACCURATE,\
gst.SEEK_TYPE_SET,\
time,\
gst.SEEK_TYPE_NONE, 0)
res = self.player.send_event(event)
if res:
self.player.set_new_stream_time(0L)
def pause(self):
self.playing = False
self.player.set_state(gst.STATE_PAUSED)
def play(self):
self.playing = True
self.player.set_state(gst.STATE_PLAYING)
def stop(self):
self.playing = False
self.player.set_state(gst.STATE_NULL)
# self.nextMovie()
def get_state(self, timeout=1):
return self.player.get_state(timeout=timeout)
def is_playing(self):
return self.playing
class PlayVideoWindow(gtk.Window):
def __init__(self):
gtk.Window.__init__(self)
self.imagesink = None
self.unset_flags(gtk.DOUBLE_BUFFERED)
self.set_flags(gtk.APP_PAINTABLE)
def set_sink(self, sink):
if (self.imagesink != None):
assert self.window.xid
self.imagesink = None
del self.imagesink
self.imagesink = sink
if self.window is not None:
self.imagesink.set_xwindow_id(self.window.xid)
def play_audio(lc, filepath):
print "loading audio id: " + filepath
if lc.gplay == None:
lc.gplay = Gplay()
lc.gplay.setFile("file:///" + filepath)
def play_video(lc, media, x, y, w, h):
print "loading media id: " + str(media)
if media == "" or media[6:] == "":
raise logoerror("#nomedia")
elif media[6:] != "None":
try:
dsobject = datastore.get(media[6:])
print dsobject.file_path
except:
print "Couldn't open id: " + str(media[6:])
play_dsobject(lc, dsobject, x, y, w, h)
def play_movie_from_file(lc, filepath, x, y, w, h):
if lc.gplay == None:
lc.gplay = Gplay()
# wait for current movie to stop playing
if lc.gplay.is_playing:
print "already playing..."
lc.gplay.setFile("file:///" + filepath)
if lc.gplay.window == None:
gplayWin = PlayVideoWindow()
lc.gplay.window = gplayWin
gplayWin.set_type_hint( gtk.gdk.WINDOW_TYPE_HINT_DIALOG )
gplayWin.set_decorated( False )
if lc.tw.running_sugar():
gplayWin.set_transient_for( lc.tw.activity )
# y position is too high for some reason (toolbox?) adding offset
gplayWin.move( x, y+108 )
gplayWin.resize( w, h )
gplayWin.show_all( )
def stop_media(lc):
if lc.gplay == None:
return
lc.gplay.stop()
if lc.gplay.window != None:
# We need to destroy the video window
# print dir(lc.gplay.window)
lc.gplay.window.destroy()
lc.gplay = None
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