revert to previous version, add timeout though

oxgst/video.py

@@ -45,22 +45,16 @@ class Video(gst.Pipeline):
 
         self.sbin.connect('pad-added', self._sbinPadAddedCb)
         self.set_state(gst.STATE_PAUSED)
-
+        self.get_state()
+        self.width = self.sink.width
+        self.height = self.sink.height
+        self.framerate = self.sink.framerate
+        self.getDuration()
+        self.frames = int((float(self.duration) / gst.SECOND) * float(self.framerate))
 
     def _sbinPadAddedCb(self, unused_sbin, pad):
         self.log("pad : %s" % pad)
-        pad.set_blocked_async (True, self._pad_blocked_cb)
-
-    def _pad_blocked_cb(self, pad, blocked):
-        if blocked:
-            #duration
-            if self.duration < 0:
-                q = gst.query_new_duration(gst.FORMAT_TIME)
-                if pad.query(q):
-                  format, self.duration = q.parse_duration()
-
         pad.link(self.csp.get_pad("sink"))
-            pad.set_blocked_async (False, self._pad_blocked_cb)
 
     def _frameCb(self, unused_thsink, frame, timestamp):
         self.log("image:%s, timestamp:%s" % (frame, gst.TIME_ARGS(timestamp)))
@@ -79,6 +73,15 @@ class Video(gst.Pipeline):
             # still some more thumbnails to process
             gobject.idle_add(self._getFrame, self.queue.pop(0))
 
+    def getDuration(self):
+        if self.duration < 0:
+            pads = self.sink.sink_pads()
+            q = gst.query_new_duration(gst.FORMAT_TIME)
+            for pad in pads:
+                if pad.get_peer() and pad.get_peer().query(q):
+                  format, self.duration = q.parse_duration()
+        return self.duration
+
     def getFrame(self, timestamp, callback):
         """
             Queue a frame request for the given timestamp,
@@ -87,12 +90,12 @@ class Video(gst.Pipeline):
         """
         
         self.log("timestamp %s" % gst.TIME_ARGS(timestamp))
-        #if self.duration < 0:
-        #    self.getDuration()
+        if self.duration < 0:
+            self.getDuration()
         
-        #if timestamp > self.duration:
-        #    self.log("timestamp %s > duration %s" % (timestamp, self.duration))
-        #    return False
+        if timestamp > self.duration:
+            self.log("timestamp %s > duration %s" % (timestamp, self.duration))
+            return False
 
         self.callback[timestamp] = callback
 
@@ -108,11 +111,6 @@ class Video(gst.Pipeline):
     def _getFrame(self, timestamp):
         if not self._ready:
             return
-        if timestamp > self.duration:
-            if self.mainloop:
-                self.mainloop.quit()
-            return
-
         self.log("timestamp : %s" % gst.TIME_ARGS(timestamp))
         self.seek(1.0, gst.FORMAT_TIME, gst.SEEK_FLAG_FLUSH | gst.SEEK_FLAG_ACCURATE,
                   gst.SEEK_TYPE_SET, timestamp,
@@ -125,7 +123,6 @@ class Video(gst.Pipeline):
         def callback(frame, timestamp):
             self._frames[timestamp] = frame
             self.mainloop.quit()
-        self._quit = False
         def quit():
             if self._quit:
                 self.mainloop.quit()
@@ -136,7 +133,6 @@ class Video(gst.Pipeline):
         gobject.timeout_add(1000, quit)
         if self.getFrame(timestamp, callback):
             self.mainloop.run()
-
         frame = self._frames[timestamp]
         del self._frames[timestamp]
         return frame