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#Copyright (c) 2008, Media Modifications Ltd.
#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.
import gobject
gobject.threads_init()
import pygst
pygst.require('0.10')
import gst
import logging
logger = logging.getLogger('record:gplay.py')
class Gplay(gobject.GObject):
__gsignals__ = {
'playback-status-changed': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_INT, gobject.TYPE_FLOAT)),
}
def __init__(self, activity_obj):
super(Gplay, self).__init__()
self.activity = activity_obj
self._playback_monitor_handler = None
self._player = gst.element_factory_make('playbin')
bus = self._player.get_bus()
bus.add_signal_watch()
bus.connect('message::error', self._bus_error)
bus.connect('message::eos', self._bus_eos)
def _bus_error(self, bus, message):
err, debug = message.parse_error()
logger.error('bus error=%s debug=%s' % (err, debug))
def _bus_eos(self, bus, message):
self.stop()
def set_location(self, location):
if self._player.get_property('uri') == location:
self.seek(0)
return
self._player.set_state(gst.STATE_READY)
self._player.set_property('uri', location)
def seek(self, position):
if position == 0:
location = 0
else:
duration = self._player.query_duration(gst.FORMAT_TIME, None)[0]
location = duration * (position / 100)
event = gst.event_new_seek(1.0, gst.FORMAT_TIME, gst.SEEK_FLAG_FLUSH | gst.SEEK_FLAG_ACCURATE, gst.SEEK_TYPE_SET, location, gst.SEEK_TYPE_NONE, 0)
res = self._player.send_event(event)
if res:
self._player.set_new_stream_time(0L)
def pause(self):
self._player.set_state(gst.STATE_PAUSED)
def play(self):
if self.get_state() == gst.STATE_PLAYING:
return
if not self._player.props.video_sink:
sink = gst.element_factory_make('xvimagesink')
sink.props.force_aspect_ratio = True
self._player.props.video_sink = sink
self.activity.set_gplay_sink(self._player.props.video_sink)
self._player.set_state(gst.STATE_PLAYING)
self._emit_playback_status(0)
self._playback_monitor_handler = gobject.timeout_add(500, self._playback_monitor)
def _playback_monitor(self):
try:
position = self._player.query_position(gst.FORMAT_TIME)[0]
duration = self._player.query_duration(gst.FORMAT_TIME)[0]
except gst.QueryError:
return True
value = (float(position) / float(duration)) * 100.0
self._emit_playback_status(value)
return True
def _emit_playback_status(self, position):
state = self._player.get_state()[1]
self.emit('playback-status-changed', state, position)
def get_state(self):
return self._player.get_state()[1]
def stop(self):
if self._playback_monitor_handler:
gobject.source_remove(self._playback_monitor_handler)
self._playback_monitor_handler = None
self._player.set_state(gst.STATE_NULL)
self._emit_playback_status(0)
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