examples/synchronizer.py: New file, a bit of a hack to remuxer.py, but for resyncing a bad ogg. Only UI at the moment..

Original commit message from CVS:
2006-08-04  Andy Wingo  <wingo@pobox.com>

* examples/synchronizer.py: New file, a bit of a hack to
remuxer.py, but for resyncing a bad ogg. Only UI at the moment..

1 files changed, 839 insertions, 0 deletions

diff --git a/examples/synchronizer.py b/examples/synchronizer.py
new file mode 100755
index 0000000..320de13
--- /dev/null
+++ b/examples/synchronizer.py
@@ -0,0 +1,839 @@
+#!/usr/bin/env python
+# -*- Mode: Python -*-
+# vi:si:et:sw=4:sts=4:ts=4
+
+import pygtk
+pygtk.require('2.0')
+
+import sys
+
+import gobject
+gobject.threads_init()
+
+import pygst
+pygst.require('0.10')
+import gst
+import gst.interfaces
+import gtk
+
+class GstPlayer:
+    def __init__(self, videowidget):
+        self.playing = False
+        self.player = gst.element_factory_make("playbin", "player")
+        self.videowidget = videowidget
+
+        bus = self.player.get_bus()
+        bus.enable_sync_message_emission()
+        bus.add_signal_watch()
+        bus.connect('sync-message::element', self.on_sync_message)
+        bus.connect('message', self.on_message)
+
+    def on_sync_message(self, bus, message):
+        if message.structure is None:
+            return
+        if message.structure.get_name() == 'prepare-xwindow-id':
+            self.videowidget.set_sink(message.src)
+            message.src.set_property('force-aspect-ratio', True)
+            
+    def on_message(self, bus, message):
+        t = message.type
+        if t == gst.MESSAGE_ERROR:
+            err, debug = message.parse_error()
+            print "Error: %s" % err, debug
+            if self.on_eos:
+                self.on_eos()
+            self.playing = False
+        elif t == gst.MESSAGE_EOS:
+            if self.on_eos:
+                self.on_eos()
+            self.playing = False
+
+    def set_location(self, location):
+        self.player.set_state(gst.STATE_NULL)
+        self.player.set_property('uri', location)
+
+    def get_location(self):
+        return self.player.get_property('uri')
+
+    def query_position(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, location):
+        """
+        @param location: time to seek to, in nanoseconds
+        """
+        gst.debug("seeking to %r" % location)
+        event = gst.event_new_seek(1.0, gst.FORMAT_TIME,
+            gst.SEEK_FLAG_FLUSH,
+            gst.SEEK_TYPE_SET, location,
+            gst.SEEK_TYPE_NONE, 0)
+
+        res = self.player.send_event(event)
+        if res:
+            gst.info("setting new stream time to 0")
+            self.player.set_new_stream_time(0L)
+        else:
+            gst.error("seek to %r failed" % location)
+
+    def pause(self):
+        gst.info("pausing player")
+        self.player.set_state(gst.STATE_PAUSED)
+        self.playing = False
+
+    def play(self):
+        gst.info("playing player")
+        self.player.set_state(gst.STATE_PLAYING)
+        self.playing = True
+        
+    def stop(self):
+        self.player.set_state(gst.STATE_NULL)
+        gst.info("stopped player")
+
+    def get_state(self, timeout=1):
+        return self.player.get_state(timeout=timeout)
+
+    def is_playing(self):
+        return self.playing
+    
+class VideoWidget(gtk.DrawingArea):
+    def __init__(self):
+        gtk.DrawingArea.__init__(self)
+        self.imagesink = None
+        self.unset_flags(gtk.DOUBLE_BUFFERED)
+
+    def do_expose_event(self, event):
+        if self.imagesink:
+            self.imagesink.expose()
+            return False
+        else:
+            return True
+
+    def set_sink(self, sink):
+        assert self.window.xid
+        self.imagesink = sink
+        self.imagesink.set_xwindow_id(self.window.xid)
+
+class SyncPoints(gtk.VBox):
+    def __init__(self, window):
+        gtk.VBox.__init__(self)
+        self.pwindow = window
+        self.create_ui()
+
+    def create_ui(self):
+        self.model = model = gtk.ListStore(gobject.TYPE_UINT64,
+                                           gobject.TYPE_UINT64)
+        self.view = view = gtk.TreeView(self.model)
+
+        def time_to_text(column, cell, method, iter, i):
+            value = model.get_value(iter, i)
+            ret = ''
+            for div, sep, mod, pad in ((gst.SECOND*60, '', 0, 0),
+                                       (gst.SECOND, ':', 60, 2),
+                                       (gst.MSECOND, '.', 1000, 3)):
+                n = value // div
+                if mod:
+                    n %= mod
+                ret += sep + ('%%0%dd' % pad) % n
+            cell.set_property('text', ret)
+
+        renderer = gtk.CellRendererText()
+        column = gtk.TreeViewColumn("Audio time", renderer)
+        column.set_cell_data_func(renderer, time_to_text, 0)
+        column.set_expand(True)
+        column.set_clickable(True)
+        view.append_column(column)
+        
+        renderer = gtk.CellRendererText()
+        column = gtk.TreeViewColumn("Video time", renderer)
+        column.set_cell_data_func(renderer, time_to_text, 1)
+        column.set_expand(True)
+        view.append_column(column)
+        
+        view.show()
+        self.pack_start(view, True, True, 6)
+
+        hbox = gtk.HBox(False, 0)
+        hbox.show()
+        self.pack_start(hbox, False, False, 0)
+
+        add = gtk.Button(stock=gtk.STOCK_ADD)
+        add.show()
+        def add_and_select(*x):
+            iter = model.append()
+            self.view.get_selection().select_iter(iter)
+        add.connect("clicked", add_and_select)
+        hbox.pack_end(add, False, False, 0)
+        
+        remove = gtk.Button(stock=gtk.STOCK_REMOVE)
+        remove.show()
+        def remove_selected(*x):
+            model, iter = self.view.get_selection().get_selected()
+            model.remove(iter)
+        remove.connect("clicked", remove_selected)
+        hbox.pack_end(remove, False, False, 0)
+        
+        pad = gtk.Label('   ')
+        pad.show()
+        hbox.pack_end(pad)
+
+        label = gtk.Label("Set: ")
+        label.show()
+        hbox.pack_start(label)
+
+        a = gtk.Button("A_udio")
+        a.show()
+        a.connect("clicked", lambda *x: self.set_selected_audio_now())
+        hbox.pack_start(a)
+
+        l = gtk.Label(" / ")
+        l.show()
+        hbox.pack_start(l)
+
+        v = gtk.Button("_Video")
+        v.show()
+        v.connect("clicked", lambda *x: self.set_selected_video_now())
+        hbox.pack_start(v)
+
+    def set_selected_audio(self, time):
+        sel = self.view.get_selection()
+        model, iter = sel.get_selected()
+        if iter:
+            model.set_value(iter, 0, time)
+
+    def set_selected_video(self, time):
+        sel = self.view.get_selection()
+        model, iter = sel.get_selected()
+        if iter:
+            model.set_value(iter, 1, time)
+
+    def set_selected_audio_now(self):
+        # pause and preroll first
+        if self.pwindow.player.is_playing():
+            self.pwindow.play_toggled()
+        self.pwindow.player.get_state(timeout=gst.MSECOND * 200)
+
+        time, dur = self.pwindow.player.query_position()
+        self.set_selected_audio(time)
+
+    def set_selected_video_now(self):
+        # pause and preroll first
+        if self.pwindow.player.is_playing():
+            self.pwindow.play_toggled()
+        self.pwindow.player.get_state(timeout=gst.MSECOND * 200)
+
+        time, dur = self.pwindow.player.query_position()
+        self.set_selected_video(time)
+
+    def seek_and_pause(self, time):
+        if self.pwindow.player.is_playing():
+            self.pwindow.play_toggled()
+        self.pwindow.player.seek(time)
+        if self.pwindow.player.is_playing():
+            self.pwindow.play_toggled()
+        self.pwindow.player.get_state(timeout=gst.MSECOND * 200)
+
+class ProgressDialog(gtk.Dialog):
+    def __init__(self, title, description, task, parent, flags, buttons):
+        gtk.Dialog.__init__(self, title, parent, flags, buttons)
+        self._create_ui(title, description, task)
+
+    def _create_ui(self, title, description, task):
+        self.set_border_width(6)
+        self.set_resizable(False)
+        self.set_has_separator(False)
+
+        vbox = gtk.VBox()
+        vbox.set_border_width(6)
+        vbox.show()
+        self.vbox.pack_start(vbox, False)
+
+        label = gtk.Label('<big><b>%s</b></big>' % title)
+        label.set_use_markup(True)
+        label.set_alignment(0.0, 0.0)
+        label.show()
+        vbox.pack_start(label, False)
+        
+        label = gtk.Label(description)
+        label.set_use_markup(True)
+        label.set_alignment(0.0, 0.0)
+        label.set_line_wrap(True)
+        label.set_padding(0, 12)
+        label.show()
+        vbox.pack_start(label, False)
+
+        self.progress = progress = gtk.ProgressBar()
+        progress.show()
+        vbox.pack_start(progress, False)
+
+        self.progresstext = label = gtk.Label('')
+        label.set_line_wrap(True)
+        label.set_use_markup(True)
+        label.set_alignment(0.0, 0.0)
+        label.show()
+        vbox.pack_start(label)
+        self.set_task(task)
+
+    def set_task(self, task):
+        self.progresstext.set_markup('<i>%s</i>' % task)
+
+UNKNOWN = 0
+SUCCESS = 1
+FAILURE = 2
+CANCELLED = 3
+
+class RemuxProgressDialog(ProgressDialog):
+    def __init__(self, parent, start, stop, fromname, toname):
+        ProgressDialog.__init__(self,
+                                "Writing to disk",
+                                ('Writing the selected segment of <b>%s</b> '
+                                 'to <b>%s</b>. This may take some time.'
+                                 % (fromname, toname)),
+                                'Starting media pipeline',
+                                parent,
+                                gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
+                                (gtk.STOCK_CANCEL, CANCELLED,
+                                 gtk.STOCK_CLOSE, SUCCESS))
+        self.start = start
+        self.stop = stop
+        self.update_position(start)
+        self.set_completed(False)
+        
+    def update_position(self, pos):
+        pos = min(max(pos, self.start), self.stop)
+        remaining = self.stop - pos
+        minutes = remaining // (gst.SECOND * 60)
+        seconds = (remaining - minutes * gst.SECOND * 60) // gst.SECOND
+        self.progress.set_text('%d:%02d of video remaining' % (minutes, seconds))
+        self.progress.set_fraction(1.0 - float(remaining) / (self.stop - self.start))
+
+    def set_completed(self, completed):
+        self.set_response_sensitive(CANCELLED, not completed)
+        self.set_response_sensitive(SUCCESS, completed)
+
+def set_connection_blocked_async_marshalled(pads, proc, *args, **kwargs):
+    def clear_list(l):
+        while l:
+            l.pop()
+
+    to_block = list(pads)
+    to_relink = [(x, x.get_peer()) for x in pads]
+
+    def on_pad_blocked_sync(pad, is_blocked):
+        if pad not in to_block:
+            # can happen after the seek and before unblocking -- racy,
+            # but no prob, bob.
+            return
+        to_block.remove(pad)
+        if not to_block:
+            # marshal to main thread
+            gobject.idle_add(on_pads_blocked)
+
+    def on_pads_blocked():
+        for src, sink in to_relink:
+            src.link(sink)
+        proc(*args, **kwargs)
+        for src, sink in to_relink:
+            src.set_blocked_async(False, lambda *x: None)
+        clear_list(to_relink)
+
+    for src, sink in to_relink:
+        src.unlink(sink)
+        src.set_blocked_async(True, on_pad_blocked_sync)
+
+class Remuxer(gst.Pipeline):
+
+    __gsignals__ = {'done': (gobject.SIGNAL_RUN_LAST, None, (int,))}
+
+    def __init__(self, fromuri, touri, start, stop):
+        # HACK: should do Pipeline.__init__, but that doesn't do what we
+        # want; there's a bug open aboooot that
+        self.__gobject_init__()
+
+        assert start >= 0
+        assert stop > start
+
+        self.fromuri = fromuri
+        self.touri = None
+        self.start_time = start
+        self.stop_time = stop
+
+        self.src = self.remuxbin = self.sink = None
+        self.resolution = UNKNOWN
+
+        self.window = None
+        self.pdialog = None
+
+        self._query_id = -1
+
+    def do_setup_pipeline(self):
+        self.src = gst.element_make_from_uri(gst.URI_SRC, self.fromuri)
+        self.remuxbin = RemuxBin(self.start_time, self.stop_time)
+        self.sink = gst.element_make_from_uri(gst.URI_SINK, self.touri)
+        self.resolution = UNKNOWN
+
+        if gobject.signal_lookup('allow-overwrite', self.sink.__class__):
+            self.sink.connect('allow-overwrite', lambda *x: True)
+
+        self.add(self.src, self.remuxbin, self.sink)
+
+        self.src.link(self.remuxbin)
+        self.remuxbin.link(self.sink)
+
+    def do_get_touri(self):
+        chooser = gtk.FileChooserDialog('Save as...',
+                                        self.window,
+                                        action=gtk.FILE_CHOOSER_ACTION_SAVE,
+                                        buttons=(gtk.STOCK_CANCEL,
+                                                 CANCELLED,
+                                                 gtk.STOCK_SAVE,
+                                                 SUCCESS))
+        chooser.set_uri(self.fromuri) # to select the folder
+        chooser.unselect_all()
+        chooser.set_do_overwrite_confirmation(True)
+        name = self.fromuri.split('/')[-1][:-4] + '-remuxed.ogg'
+        chooser.set_current_name(name)
+        resp = chooser.run()
+        uri = chooser.get_uri()
+        chooser.destroy()
+
+        if resp == SUCCESS:
+            return uri
+        else:
+            return None
+
+    def _start_queries(self):
+        def do_query():
+            try:
+                # HACK: self.remuxbin.query() should do the same
+                # (requires implementing a vmethod, dunno how to do that
+                # although i think it's possible)
+                # HACK: why does self.query_position(..) not give useful
+                # answers? 
+                pad = self.remuxbin.get_pad('src')
+                pos, duration = pad.query_position(gst.FORMAT_TIME)
+                if pos != gst.CLOCK_TIME_NONE:
+                    self.pdialog.update_position(pos)
+            except:
+                # print 'query failed'
+                pass
+            return True
+        if self._query_id == -1:
+            self._query_id = gobject.timeout_add(100, # 10 Hz
+                                                 do_query)
+
+    def _stop_queries(self):
+        if self._query_id != -1:
+            gobject.source_remove(self._query_id)
+            self._query_id = -1
+
+    def _bus_watch(self, bus, message):
+        if message.type == gst.MESSAGE_ERROR:
+            print 'error', message
+            self._stop_queries()
+            m = gtk.MessageDialog(self.window,
+                                  gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
+                                  gtk.MESSAGE_ERROR,
+                                  gtk.BUTTONS_CLOSE,
+                                  "Error processing file")
+            gerror, debug = message.parse_error()
+            txt = ('There was an error processing your file: %s\n\n'
+                   'Debug information:\n%s' % (gerror, debug))
+            m.format_secondary_text(txt)
+            m.run()
+            m.destroy()
+            self.response(FAILURE)
+        elif message.type == gst.MESSAGE_WARNING:
+            print 'warning', message
+        elif message.type == gst.MESSAGE_EOS:
+            # print 'eos, woot', message.src
+            name = self.touri
+            if name.startswith('file://'):
+                name = name[7:]
+            self.pdialog.set_task('Finished writing %s' % name)
+            self.pdialog.update_position(self.stop_time)
+            self._stop_queries()
+            self.pdialog.set_completed(True)
+        elif message.type == gst.MESSAGE_STATE_CHANGED:
+            if message.src == self:
+                old, new, pending = message.parse_state_changed()
+                if ((old, new, pending) ==
+                    (gst.STATE_READY, gst.STATE_PAUSED,
+                     gst.STATE_VOID_PENDING)):
+                    self.pdialog.set_task('Processing file')
+                    self.pdialog.update_position(self.start_time)
+                    self._start_queries()
+                    self.set_state(gst.STATE_PLAYING)
+
+    def response(self, response):
+        assert self.resolution == UNKNOWN
+        self.resolution = response
+        self.set_state(gst.STATE_NULL)
+        self.pdialog.destroy()
+        self.pdialog = None
+        self.window.set_sensitive(True)
+        self.emit('done', response)
+
+    def start(self, main_window):
+        self.window = main_window
+        self.touri = self.do_get_touri()
+        if not self.touri:
+            return False
+        self.do_setup_pipeline()
+        bus = self.get_bus()
+        bus.add_signal_watch()
+        bus.connect('message', self._bus_watch)
+        if self.window:
+            # can be None if we are debugging...
+            self.window.set_sensitive(False)
+        fromname = self.fromuri.split('/')[-1]
+        toname = self.touri.split('/')[-1]
+        self.pdialog = RemuxProgressDialog(main_window, self.start_time,
+                                           self.stop_time, fromname, toname)
+        self.pdialog.show()
+        self.pdialog.connect('response', lambda w, r: self.response(r))
+
+        self.set_state(gst.STATE_PAUSED)
+        return True
+        
+    def run(self, main_window):
+        if self.start(main_window):
+            loop = gobject.MainLoop()
+            self.connect('done', lambda *x: gobject.idle_add(loop.quit))
+            loop.run()
+        else:
+            self.resolution = CANCELLED
+        return self.resolution
+        
+class RemuxBin(gst.Bin):
+    def __init__(self, start_time, stop_time):
+        self.__gobject_init__()
+
+        self.parsefactories = self._find_parsers()
+        self.parsers = []
+
+        self.demux = gst.element_factory_make('oggdemux')
+        self.mux = gst.element_factory_make('oggmux')
+
+        self.add(self.demux, self.mux)
+
+        self.add_pad(gst.GhostPad('sink', self.demux.get_pad('sink')))
+        self.add_pad(gst.GhostPad('src', self.mux.get_pad('src')))
+
+        self.demux.connect('pad-added', self._new_demuxed_pad)
+        self.demux.connect('no-more-pads', self._no_more_pads)
+
+        self.start_time = start_time
+        self.stop_time = stop_time
+
+    def _find_parsers(self):
+        registry = gst.registry_get_default()
+        ret = {}
+        for f in registry.get_feature_list(gst.ElementFactory):
+            if f.get_klass().find('Parser') >= 0:
+                for t in f.get_static_pad_templates():
+                    if t.direction == gst.PAD_SINK:
+                        for s in t.get_caps():
+                            ret[s.get_name()] = f.get_name()
+                        break
+        return ret
+
+    def _new_demuxed_pad(self, element, pad):
+        format = pad.get_caps()[0].get_name()
+
+        if format not in self.parsefactories:
+            self.async_error("Unsupported media type: %s", format)
+            return
+
+        queue = gst.element_factory_make('queue', 'queue_' + format)
+        queue.set_property('max-size-buffers', 1000)
+        parser = gst.element_factory_make(self.parsefactories[format])
+        self.add(queue)
+        self.add(parser)
+        queue.set_state(gst.STATE_PAUSED)
+        parser.set_state(gst.STATE_PAUSED)
+        pad.link(queue.get_compatible_pad(pad))
+        queue.link(parser)
+        parser.link(self.mux)
+        self.parsers.append(parser)
+
+    def _do_seek(self):
+        flags = gst.SEEK_FLAG_FLUSH
+        # HACK: self.seek should work, should try that at some point
+        return self.demux.seek(1.0, gst.FORMAT_TIME, flags,
+                               gst.SEEK_TYPE_SET, self.start_time,
+                               gst.SEEK_TYPE_SET, self.stop_time)
+
+    def _no_more_pads(self, element):
+        pads = [x.get_pad('src') for x in self.parsers]
+        set_connection_blocked_async_marshalled(pads,
+                                                self._do_seek)
+
+
+class PlayerWindow(gtk.Window):
+    UPDATE_INTERVAL = 500
+    def __init__(self):
+        gtk.Window.__init__(self)
+        self.set_default_size(600, 500)
+
+        self.create_ui()
+
+        self.player = GstPlayer(self.videowidget)
+
+        def on_eos():
+            self.player.seek(0L)
+            self.play_toggled()
+        self.player.on_eos = lambda *x: on_eos()
+        
+        self.update_id = -1
+        self.changed_id = -1
+        self.seek_timeout_id = -1
+
+        self.p_position = gst.CLOCK_TIME_NONE
+        self.p_duration = gst.CLOCK_TIME_NONE
+
+        def on_delete_event():
+            self.player.stop()
+            gtk.main_quit()
+        self.connect('delete-event', lambda *x: on_delete_event())
+
+    def load_file(self, location):
+        filename = location.split('/')[-1]
+        self.set_title('%s munger' % filename)
+        self.player.set_location(location)
+        if self.videowidget.flags() & gtk.REALIZED:
+            self.play_toggled()
+        else:
+            self.videowidget.connect_after('realize',
+                                           lambda *x: self.play_toggled())
+                                  
+    def create_ui(self):
+        vbox = gtk.VBox()
+        vbox.show()
+        self.add(vbox)
+
+        self.videowidget = VideoWidget()
+        self.videowidget.show()
+        vbox.pack_start(self.videowidget)
+        
+        hbox = gtk.HBox()
+        hbox.show()
+        vbox.pack_start(hbox, fill=False, expand=False)
+        
+        self.adjustment = gtk.Adjustment(0.0, 0.00, 100.0, 0.1, 1.0, 1.0)
+        hscale = gtk.HScale(self.adjustment)
+        hscale.set_digits(2)
+        hscale.set_update_policy(gtk.UPDATE_CONTINUOUS)
+        hscale.connect('button-press-event', self.scale_button_press_cb)
+        hscale.connect('button-release-event', self.scale_button_release_cb)
+        hscale.connect('format-value', self.scale_format_value_cb)
+        hbox.pack_start(hscale)
+        hscale.show()
+        self.hscale = hscale
+
+        table = gtk.Table(3,3)
+        table.show()
+        vbox.pack_start(table, fill=False, expand=False, padding=6)
+
+        self.button = button = gtk.Button(stock=gtk.STOCK_MEDIA_PLAY)
+        button.set_property('can-default', True)
+        button.set_focus_on_click(False)
+        button.show()
+
+        # problem: play and paused are of different widths and cause the
+        # window to re-layout
+        # "solution": add more buttons to a vbox so that the horizontal
+        # width is enough
+        bvbox = gtk.VBox()
+        bvbox.add(button)
+        bvbox.add(gtk.Button(stock=gtk.STOCK_MEDIA_PLAY))
+        bvbox.add(gtk.Button(stock=gtk.STOCK_MEDIA_PAUSE))
+        sizegroup = gtk.SizeGroup(gtk.SIZE_GROUP_HORIZONTAL)
+        for kid in bvbox.get_children():
+            sizegroup.add_widget(kid)
+        bvbox.show()
+        table.attach(bvbox, 0, 1, 1, 3, gtk.FILL, gtk.FILL)
+        
+        # can't set this property before the button has a window
+        button.set_property('has-default', True)
+        button.connect('clicked', lambda *args: self.play_toggled())
+
+        self.sync = sync = SyncPoints(self)
+        sync.show()
+        table.attach(sync, 1, 2, 0, 3, gtk.EXPAND, gtk.EXPAND|gtk.FILL, 12)
+        # nasty things to get sizes
+        l = gtk.Label('\n\n\n')
+        l.show()
+        table.attach(l, 0, 1, 0, 1, 0, 0, 0)
+        l = gtk.Label('\n\n\n')
+        l.show()
+        table.attach(l, 2, 3, 0, 1, 0, 0, 0)
+
+        button = gtk.Button("_Open other movie...")
+        button.show()
+        button.connect('clicked', lambda *x: self.do_choose_file())
+        table.attach(button, 2, 3, 1, 2, gtk.FILL, gtk.FILL)
+
+        button = gtk.Button("_Write to disk")
+        button.set_property('image',
+                            gtk.image_new_from_stock(gtk.STOCK_SAVE_AS,
+                                                     gtk.ICON_SIZE_BUTTON))
+        button.connect('clicked', lambda *x: self.do_remux())
+        button.show()
+        table.attach(button, 2, 3, 2, 3, gtk.FILL, gtk.FILL)
+
+    def do_remux(self):
+        if self.player.is_playing():
+            self.play_toggled()
+        in_uri = self.player.get_location()
+        out_uri = in_uri[:-4] + '-remuxed.ogg'
+        raise NotImplementedError()
+        r = Remuxer(in_uri, out_uri,
+                    self.cutin.get_time(), self.cutout.get_time())
+        r.run(self)
+
+    def do_choose_file(self):
+        if self.player.is_playing():
+            self.play_toggled()
+        chooser = gtk.FileChooserDialog('Choose a movie to bork bork bork',
+                                        self,
+                                        buttons=(gtk.STOCK_CANCEL,
+                                                 CANCELLED,
+                                                 gtk.STOCK_OPEN,
+                                                 SUCCESS))
+        chooser.set_local_only(False)
+        chooser.set_select_multiple(False)
+        f = gtk.FileFilter()
+        f.set_name("All files")
+        f.add_pattern("*")
+        chooser.add_filter(f)
+        f = gtk.FileFilter()
+        f.set_name("Ogg files")
+        f.add_pattern("*.ogg") # as long as this is the only thing we
+                               # support...
+        chooser.add_filter(f)
+        chooser.set_filter(f)
+        
+        prev = self.player.get_location()
+        if prev:
+            chooser.set_uri(prev)
+
+        resp = chooser.run()
+        uri = chooser.get_uri()
+        chooser.destroy()
+
+        if resp == SUCCESS:
+            self.load_file(uri)
+            return True
+        else:
+            return False
+        
+    def play_toggled(self):
+        if self.player.is_playing():
+            self.player.pause()
+            self.button.set_label(gtk.STOCK_MEDIA_PLAY)
+        else:
+            self.player.play()
+            if self.update_id == -1:
+                self.update_id = gobject.timeout_add(self.UPDATE_INTERVAL,
+                                                     self.update_scale_cb)
+            self.button.set_label(gtk.STOCK_MEDIA_PAUSE)
+
+    def scale_format_value_cb(self, scale, value):
+        if self.p_duration == -1:
+            real = 0
+        else:
+            real = value * self.p_duration / 100
+        
+        seconds = real / gst.SECOND
+
+        return "%02d:%02d" % (seconds / 60, seconds % 60)
+
+    def scale_button_press_cb(self, widget, event):
+        # see seek.c:start_seek
+        gst.debug('starting seek')
+        
+        self.button.set_sensitive(False)
+        self.was_playing = self.player.is_playing()
+        if self.was_playing:
+            self.player.pause()
+
+        # don't timeout-update position during seek
+        if self.update_id != -1:
+            gobject.source_remove(self.update_id)
+            self.update_id = -1
+
+        # make sure we get changed notifies
+        if self.changed_id == -1:
+            self.changed_id = self.hscale.connect('value-changed',
+                self.scale_value_changed_cb)
+            
+    def scale_value_changed_cb(self, scale):
+        # see seek.c:seek_cb
+        real = long(scale.get_value() * self.p_duration / 100) # in ns
+        gst.debug('value changed, perform seek to %r' % real)
+        self.player.seek(real)
+        # allow for a preroll
+        self.player.get_state(timeout=50*gst.MSECOND) # 50 ms
+
+    def scale_button_release_cb(self, widget, event):
+        # see seek.cstop_seek
+        widget.disconnect(self.changed_id)
+        self.changed_id = -1
+
+        self.button.set_sensitive(True)
+        if self.seek_timeout_id != -1:
+            gobject.source_remove(self.seek_timeout_id)
+            self.seek_timeout_id = -1
+        else:
+            gst.debug('released slider, setting back to playing')
+            if self.was_playing:
+                self.player.play()
+
+        if self.update_id != -1:
+            self.error('Had a previous update timeout id')
+        else:
+            self.update_id = gobject.timeout_add(self.UPDATE_INTERVAL,
+                self.update_scale_cb)
+
+    def update_scale_cb(self):
+        had_duration = self.p_duration != gst.CLOCK_TIME_NONE
+        self.p_position, self.p_duration = self.player.query_position()
+        if self.p_position != gst.CLOCK_TIME_NONE:
+            value = self.p_position * 100.0 / self.p_duration
+            self.adjustment.set_value(value)
+        return True
+
+def main(args):
+    def usage():
+        sys.stderr.write("usage: %s [URI-OF-MEDIA-FILE]\n" % args[0])
+        return 1
+
+    w = PlayerWindow()
+    w.show()
+
+    if len(args) == 1:
+        if not w.do_choose_file():
+            return 1
+    elif len(args) == 2:
+        if not gst.uri_is_valid(args[1]):
+            sys.stderr.write("Error: Invalid URI: %s\n" % args[1])
+            return 1
+        w.load_file(args[1])
+    else:
+        return usage()
+
+    gtk.main()
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))