audio and video playing

[talkcutter.git] / src / mediaplayer.py

diff --git a/src/mediaplayer.py b/src/mediaplayer.py
new file mode 100644 (file)
index 0000000..b2741b0
--- /dev/null
+++ b/src/mediaplayer.py
@@ -0,0 +1,94 @@
+import os
+import gst, gtk, gobject
+import sys
+import pygtk
+import gtk
+import gtk.glade
+
+class mediaplayer(object):
+    def __init__( self ):
+        self.playbin = gst.element_factory_make('playbin2')
+
+        self.bus = self.playbin.get_bus()
+        self.bus.add_signal_watch()
+        self.bus.connect("message::eos", self.on_finish)
+
+        self.spinner.set_range(0, 100)
+        self.spinner.set_increments(1, 10)
+        self.spinner.connect('change-value', self.on_seeker_change)
+
+        self.seeker.set_range(0, 100)
+        self.seeker.set_increments(1, 10)
+        self.seeker.connect('change-value', self.on_seeker_change)
+        self.seeker.connect('button-press-event', self.on_button_press)
+        self.seeker.connect('button-release-event', self.on_button_release)
+
+        self.is_playing = False
+        self.known_range = False
+
+    def play(self, uri):
+        self.playbin.set_property('uri', uri)
+        self.playbin.set_state(gst.STATE_PLAYING)
+        self.label.label = 'f';
+        gobject.timeout_add(100, self.update_slider)
+        self.is_playing = True
+        self.known_range = False
+
+    def on_finish(self, bus, message):
+        self.playbin.set_state(gst.STATE_PAUSED);
+        self.spinner.set_value(0);
+        self.seeker.set_value(0);
+
+    def on_video_realized(self, sender):
+        self.sink.set_xwindow_id(self.drawingarea.window.xid)
+
+    def update_slider(self):
+        if not self.is_playing:
+            return False # cancel timeout
+
+        try:
+            if not self.known_range:
+                duration_nanosecs, format = self.playbin.query_duration(gst.FORMAT_TIME)
+                if duration_nanosecs > 0:
+                  duration_secs = float(duration_nanosecs) / gst.SECOND
+                  print duration_secs
+                  self.seeker.set_range(0, duration_secs)
+                  self.spinner.set_range(0, duration_secs)
+                  self.known_range = True
+                  print "Duration: %f" % (duration_secs) 
+
+            nanosecs, format = self.playbin.query_position(gst.FORMAT_TIME)
+
+            # block seek handler so we don't seek when we set_value()
+            self.seeker.handler_block_by_func(self.on_seeker_change)
+            self.spinner.handler_block_by_func(self.on_seeker_change)
+
+            value = float(nanosecs) / gst.SECOND;
+
+            #print "Trigger: %f" % (value) 
+
+            self.seeker.set_value(value)
+            self.spinner.set_text("%f" %(value))
+
+            self.seeker.handler_unblock_by_func(self.on_seeker_change)
+            self.spinner.handler_unblock_by_func(self.on_seeker_change)
+
+        except gst.QueryError:
+            # pipeline must not be ready and does not know position
+            pass
+
+        return True # continue calling every 30 milliseconds
+
+
+    def on_seeker_change(self, element, a, b):
+        print 'on_seeker_change'
+        seek_time_secs = element.get_value()
+        self.playbin.seek_simple(gst.FORMAT_TIME, gst.SEEK_FLAG_FLUSH | gst.SEEK_FLAG_KEY_UNIT, seek_time_secs * gst.SECOND)
+
+    def on_button_press(self, element, a):
+        self.playbin.set_state(gst.STATE_PAUSED);
+
+    def on_button_release(self, element, a):
+        self.playbin.set_state(gst.STATE_PLAYING)
+
+