asked in Stackoverflow. (no answer)
Hi All,
I am trying to stream cast a computer generated video using gstreamer
and icecast, but I cannot get gstreamer appsrc to work. My app works
as expected if I use xvimagesink as the sink(see commented code
below). But once I pipe it to theoraenc it does not run.
I exchanged shout2send with filesink to check if the problem was
icecast, the result is that no data is written to the file.
Substituting appsrc with testvideosrc works as expected. Any
suggestion?
Bernardo
#!/usr/bin/env python
import sys, os, pygtk, gtk, gobject
import pygst
pygst.require("0.10")
import gst
import numpy as np
class GTK_Main:
def __init__(self):
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect("destroy", gtk.main_quit, "WM destroy")
vbox = gtk.VBox()
window.add(vbox)
self.button = gtk.Button("Start")
self.button.connect("clicked", self.start_stop)
vbox.add(self.button)
window.show_all()
self.player = gst.Pipeline("player")
source = gst.element_factory_make("appsrc", "source")
caps = gst.Caps("video/x-raw-gray,bpp=16,endianness=1234,width=320,height=240,framerate=(fraction)10/1")
source.set_property('caps',caps)
source.set_property('blocksize',320*240*2)
source.connect('need-data', self.needdata)
colorspace = gst.element_factory_make('ffmpegcolorspace')
enc = gst.element_factory_make('theoraenc')
mux = gst.element_factory_make('oggmux')
shout = gst.element_factory_make('shout2send')
shout.set_property("ip","localhost")
shout.set_property("password","hackme")
shout.set_property("mount","/stream")
caps = gst.Caps("video/x-raw-yuv,width=320,height=240,framerate=(fraction)10/1,format=(fourcc)I420")
enc.caps = caps
videosink = gst.element_factory_make('xvimagesink')
videosink.caps = caps
self.player.add(source, colorspace, enc, mux, shout)
gst.element_link_many(source, colorspace, enc, mux, shout)
#self.player.add(source, colorspace, videosink)
#gst.element_link_many(source, colorspace, videosink)
def start_stop(self, w):
if self.button.get_label() == "Start":
self.button.set_label("Stop")
self.player.set_state(gst.STATE_PLAYING)
else:
self.player.set_state(gst.STATE_NULL)
self.button.set_label("Start")
def needdata(self, src, length):
bytes = np.int16(np.random.rand(length/2)*30000).data
src.emit('push-buffer', gst.Buffer(bytes))
GTK_Main()
gtk.gdk.threads_init()
gtk.main()
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