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- #!/usr/bin/env python
- #
- # gst-python
- # Copyright (C) 2005 Andy Wingo <wingo@pobox.com>
- #
- # This library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Library General Public
- # License as published by the Free Software Foundation; either
- # version 2 of the License, or (at your option) any later version.
- #
- # This library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- # Library General Public License for more details.
- #
- # You should have received a copy of the GNU Library General Public
- # License along with this library; if not, write to the
- # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- # Boston, MA 02111-1307, USA.
-
-
- # A test more of gst-plugins than of gst-python.
-
-
- import sys
-
- import pygtk
- pygtk.require('2.0')
- import gtk
- import gtk.gdk
- import pango
- import gobject
-
- import pygst
- pygst.require('0.10')
- import gst
-
- import debugslider
-
-
- data = (('Video capture via V4L',
- 'v4lsrc name=source \n'
- ' ! videorate \n'
- ' ! ffmpegcolorspace ! autovideosink'),
- ('Video capture via V4L, fixed frame rate',
- 'v4lsrc name=source autoprobe=false autoprobe-fps=false \n'
- ' ! video/x-raw-yuv,format=(fourcc)I420,framerate=(double)7.5 \n'
- ' ! videorate \n'
- ' ! ffmpegcolorspace \n'
- ' ! autovideosink'),
- ('Sound capture',
- 'gconfaudiosrc\n'
- ' ! audio/x-raw-int,rate=22050,depth=16,channels=1,width=16,signed=(boolean)TRUE,endianness=(int)BYTE_ORDER\n'
- ' ! level message=true\n'
- ' ! fakesink'),
- ('Streaming Ogg/Theora+Vorbis playback, tee to disk',
- 'gnomevfssrc location=http://gstreamer.freedesktop.org/media/small/cooldance.ogg \n'
- ' ! tee name=tee \n'
- ' tee. ! oggdemux name=demux \n'
- ' demux. ! queue ! theoradec ! ffmpegcolorspace ! autovideosink \n'
- ' demux. ! queue ! vorbisdec ! audioconvert ! autoaudiosink \n'
- ' tee. ! queue ! filesink location=/tmp/cooldance.ogg'),
- ('Video test, YUV format',
- 'videotestsrc \n'
- ' ! video/x-raw-yuv,format=(fourcc)I420 \n'
- ' ! ffmpegcolorspace ! autovideosink'),
- ('Video test, RGB format',
- 'videotestsrc \n'
- ' ! video/x-raw-rgb,red_mask=0xff00 \n'
- ' ! ffmpegcolorspace \n'
- ' ! autovideosink'),
- ('Software scaling',
- 'videotestsrc \n'
- ' ! video/x-raw-rgb,height=200,width=320 \n'
- ' ! videoscale method=2 \n'
- ' ! ffmpegcolorspace ! autovideosink'),
- ('Reencode Vorbis to mulaw, play',
- 'filesrc location=/tmp/cooldance.ogg \n'
- ' ! oggdemux \n'
- ' ! vorbisdec ! audioconvert \n'
- ' ! mulawenc ! mulawdec ! autoaudiosink'),
- ('Capture DV via firewire, transcode into Ogg',
- 'dv1394src \n'
- ' ! dvdemux name=demux \n'
- ' ! queue \n'
- ' ! video/x-dv,systemstream=(boolean)false \n'
- ' ! dvdec drop-factor=2 \n'
- ' ! videorate \n'
- ' ! videoscale \n'
- ' ! video/x-raw-yuv,width=360,height=288 \n'
- ' ! videoscale \n'
- ' ! video/x-raw-yuv,width=240,height=192,framerate=10.0,format=(fourcc)YUY2 \n'
- ' ! ffmpegcolorspace \n'
- ' ! theoraenc \n'
- ' ! oggmux name=mux \n'
- ' ! filesink location=/tmp/dv.ogg \n'
- ' \n'
- ' demux. \n'
- ' ! audio/x-raw-int \n'
- ' ! queue \n'
- ' ! audioconvert \n'
- ' ! vorbisenc \n'
- ' ! mux.'))
-
-
- def escape(s, chars, escaper='\\'):
- for c in chars:
- s = s.replace(c, '%s%s' % (escaper, c))
- return s
-
-
- def make_model():
- m = gtk.ListStore(str, str)
- for pair in data:
- i = m.append()
- m.set_value(i, 0, pair[0])
- m.set_value(i, 1, pair[1])
- return m
-
-
- class Window(gtk.Window):
- def __init__(self):
- gtk.Window.__init__(self, gtk.WINDOW_TOPLEVEL)
- self.playing = False
- self.selected_pipe = None
- self.pipeline = None
- self.prepare_ui()
-
- def prepare_ui(self):
- self.set_default_size(300,400)
- self.set_title('GStreamer Pipeline Tester')
- self.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)
- self.connect('delete-event', lambda *x: gtk.main_quit())
- self.set_border_width(18)
- b = gtk.VBox(False, 12)
- b.show()
- self.add(b)
- l = gtk.Label()
- l.set_markup('<big><b>GStreamer Pipeline Tester</b></big>')
- l.show()
- b.pack_start(l, False, False, 6)
- l = gtk.Label('Choose a pipeline below to run.')
- l.show()
- b.pack_start(l, False, False, 0)
- sw = gtk.ScrolledWindow()
- sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_NEVER)
- sw.set_shadow_type(gtk.SHADOW_IN)
- sw.show()
- b.pack_start(sw, True, True, 6)
- tv = gtk.TreeView(make_model())
- tv.set_property('can-default', False)
- r = gtk.CellRendererText()
- r.set_property('xalign', 0.5)
- c = gtk.TreeViewColumn('System', r, text=0)
- tv.append_column(c)
- tv.set_headers_visible(False)
- tv.show()
- sw.add(tv)
- ds = debugslider.DebugSlider()
- ds.show()
- b.pack_start(ds, False, False, 0)
- l = gtk.Label()
- l.set_selectable(True)
- l.show()
- b.pack_start(l, False, False, 0)
- bb = gtk.HButtonBox()
- bb.set_layout(gtk.BUTTONBOX_SPREAD)
- bb.show()
- b.pack_start(bb, False, False, 0)
- bu = gtk.Button(stock=gtk.STOCK_MEDIA_PLAY)
- bu.set_property('can-default', True)
- bu.set_focus_on_click(False)
- bu.show()
- bb.pack_start(bu, True, False, 0)
- bu.set_property('has-default', True)
- self.button = bu
-
- def on_changed(s):
- m, i = s.get_selected()
- if m:
- self.selected_pipe = m.get_value(i, 1)
- pasteable = escape(self.selected_pipe, '\n)(')
- l.set_markup('<small><tt>%s</tt></small>' % pasteable)
- else:
- self.selected_pipe = None
- l.set_markup('')
- tv.get_selection().connect('changed', on_changed)
-
- tv.connect('row-activated', lambda *x: self.play_toggled())
-
- bu.connect('clicked', lambda *x: self.play_toggled())
-
- def error(self, message, secondary=None):
- m = gtk.MessageDialog(self,
- gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
- gtk.MESSAGE_ERROR,
- gtk.BUTTONS_OK,
- message)
- if secondary:
- m.format_secondary_text(secondary)
- m.run()
- m.destroy()
- self.stop()
-
- def on_message(self, bus, message):
- t = message.type
- print message
- if t == gst.MESSAGE_STATE_CHANGED:
- pass
- elif t == gst.MESSAGE_ERROR:
- err, debug = message.parse_error()
- self.error("%s" % err, debug)
- elif t == gst.MESSAGE_EOS:
- self.play_toggled()
- else:
- print '%s: %s:' % (message.src.get_path_string(),
- message.type.value_nicks[1])
- if message.structure:
- print ' %s' % message.structure.to_string()
- else:
- print ' (no structure)'
- return True
-
- def play(self):
- pipestr = self.selected_pipe
- try:
- self.set_sensitive(False)
- pipeline = gst.parse_launch(pipestr)
- self.set_sensitive(True)
- except gobject.GError, e:
- self.set_sensitive(True)
- self.error('Could not create pipeline', str(e))
- return False
-
- bus = pipeline.get_bus()
- bus.add_signal_watch()
- watch_id = bus.connect('message', self.on_message)
- self.pipeline = pipeline
- self.watch_id = watch_id
- pipeline.set_state(gst.STATE_PLAYING)
-
- def stop(self):
- bus = self.pipeline.get_bus()
- bus.disconnect(self.watch_id)
- bus.remove_signal_watch()
- self.pipeline.set_state(gst.STATE_NULL)
- self.pipeline = None
- del self.watch_id
-
- def play_toggled(self):
- if self.playing:
- self.stop()
- self.button.set_label(gtk.STOCK_MEDIA_PLAY)
- self.playing = False
- else:
- self.play()
- self.playing = True
- self.button.set_label(gtk.STOCK_MEDIA_STOP)
-
- if __name__ == '__main__':
- w = Window()
- w.show()
- gtk.main()
-