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flowbox_test.py
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flowbox_test.py
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import gi
gi.require_version('Gst', '1.0')
gi.require_version('Gtk', '3.0')
gi.require_version('GstVideo', '1.0')
from gi.repository import Gst, GObject, Gtk, Gdk
from gi.repository import GstVideo
class CropTest(Gtk.Window):
def __init__(self):
super(CropTest, self).__init__()
self.connect('destroy', self.on_quit)
self.create_ui()
self.create_control()
def create_ui(self):
screen = self.get_screen()
w = screen.get_width() - 10
h = screen.get_height() - 65
self.set_default_size(w, h)
hbox = Gtk.HBox()
self.add(hbox)
da = Gtk.DrawingArea()
da.set_size_request(1280, 720)
da.modify_bg(Gtk.StateType.NORMAL, Gdk.Color(0, 0, 0))
hbox.pack_start(da, False, False, 2)
vbox = Gtk.VBox()
hbox.pack_end(vbox, True, True, 2)
lblLeft = Gtk.Label("Left :")
lblLeft.set_halign(Gtk.Align.START)
vbox.pack_start(lblLeft, False, False, 0)
adjLeft = Gtk.Adjustment(0, 0, 200, 10, 20, 0)
adjLeft.connect('value-changed', self.on_left_changed)
sclLeft = Gtk.HScale(adjustment=adjLeft)
vbox.pack_start(sclLeft, False, True, 0)
vbox.pack_start(Gtk.Label(""), False, False, 2)
lblTop = Gtk.Label("Top :")
lblTop.set_halign(Gtk.Align.START)
vbox.pack_start(lblTop, False, False, 0)
adjTop = Gtk.Adjustment(0, 0, 200, 10, 20, 0)
adjTop.connect('value-changed', self.on_top_changed)
sclTop = Gtk.HScale(adjustment=adjTop)
vbox.pack_start(sclTop, False, True, 0)
vbox.pack_start(Gtk.Label(""), False, False, 2)
lblRight = Gtk.Label("Right :")
lblRight.set_halign(Gtk.Align.START)
vbox.pack_start(lblRight, False, False, 0)
adjRight = Gtk.Adjustment(0, 0, 400, 10, 20, 0)
adjRight.connect('value-changed', self.on_right_changed)
sclRight = Gtk.HScale(adjustment=adjRight)
vbox.pack_start(sclRight, False, True, 0)
vbox.pack_start(Gtk.Label(""), False, False, 2)
lblBottom = Gtk.Label("Bottom :")
lblBottom.set_halign(Gtk.Align.START)
vbox.pack_start(lblBottom, False, False, 0)
adjBottom = Gtk.Adjustment(0, 0, 200, 10, 20, 0)
adjBottom.connect('value-changed', self.on_bottom_changed)
sclBottom = Gtk.HScale(adjustment=adjBottom)
vbox.pack_start(sclBottom, False, True, 0)
hbox2 = Gtk.HBox()
vbox.pack_end(hbox2, True, False, 2)
startBtn = Gtk.Button(label='Start')
startBtn.connect('clicked', self.run)
hbox2.pack_start(startBtn, True, True, 2)
exitBtn = Gtk.Button(label='Exit')
exitBtn.connect('clicked', self.on_quit)
hbox2.pack_start(exitBtn, True, True, 2)
def create_control(self):
self.pipe = Gst.Pipeline.new('videocrop_test')
bus = self.pipe.get_bus()
bus.add_signal_watch()
src = Gst.ElementFactory.make('tcpclientsrc', 'src')
src.set_property('host', '192.168.0.79')
src.set_property('port', 5001)
self.pipe.add(src)
depay = Gst.ElementFactory.make('gdpdepay', 'depay')
self.pipe.add(depay)
rtpdepay = Gst.ElementFactory.make('rtph264depay', 'rtpdepay')
self.pipe.add(rtpdepay)
parse = Gst.ElementFactory.make('h264parse', 'parse')
self.pipe.add(parse)
dec = Gst.ElementFactory.make('avdec_h264', 'dec')
self.pipe.add(dec)
conv = Gst.ElementFactory.make('videoconvert', 'convert')
self.pipe.add(conv)
self.crop = Gst.ElementFactory.make('videocrop', 'crop')
self.crop.set_property('left', 0)
self.crop.set_property('top', 0)
self.crop.set_property('right', 0)
self.crop.set_property('bottom', 0)
self.pipe.add(self.crop)
conv2 = Gst.ElementFactory.make('videoconvert', 'conv2')
self.pipe.add(conv2)
sink = Gst.ElementFactory.make('autovideosink', 'sink')
sink.set_property('sync', False)
self.pipe.add(sink)
src.link(depay)
depay.link(rtpdepay)
rtpdepay.link(parse)
parse.link(dec)
dec.link(conv)
conv.link(self.crop)
self.crop.link(conv2)
conv2.link(sink)
def start(self):
self.show_all()
def run(self, widget):
self.pipe.set_state(Gst.State.PLAYING)
def on_left_changed(self, adjustmnt):
val = int(adjustmnt.get_value())
self.crop.set_property('left', val)
def on_top_changed(self, adjustmnt):
val = int(adjustmnt.get_value())
self.crop.set_property('top', val)
def on_right_changed(self, adjustmnt):
val = int(adjustmnt.get_value())
self.crop.set_property('right', val)
def on_bottom_changed(self, adjustmnt):
val = int(adjustmnt.get_value())
self.crop.set_property('bottom', val)
def on_quit(self, widget):
self.pipe.set_state(Gst.State.NULL)
self.pipe.unref()
Gtk.main_quit()
if __name__ == "__main__":
GObject.threads_init()
Gst.init(None)
win = CropTest()
win.start()
Gtk.main()