def chainfunc(self, pad, buffer):
if self.proxy:
# we are in proxy mode already
self.srcpad.push(buffer)
return Gst.FlowReturn.OK
self.buffer = self.buffer + buffer.data
if not self.buffer_size:
try:
self.buffer_size, a_type = \
struct.unpack('>L4s', self.buffer[:8])
except Exception:
return Gst.FlowReturn.OK
if len(self.buffer) < self.buffer_size:
# we need to buffer more
return Gst.FlowReturn.OK
buffer = self.buffer[self.buffer_size:]
fake_header = self.get_fake_header()
n_buf = Gst.Buffer(fake_header + buffer)
self.proxy = True
self.srcpad.push(n_buf)
return Gst.FlowReturn.OK
def test_basic():
global result_x
global result_y
Gst.init(None)
loop = GLib.MainLoop()
pipe_str = "appsrc name=appsrc ! queue ! appsink name=appsink"
pipeline = Gst.parse_launch(pipe_str)
appsrc = pipeline.get_by_name("appsrc")
appsrc.set_property('do-timestamp', True)
appsink = pipeline.get_by_name("appsink")
appsink.set_property('emit-signals', True)
appsink.set_property("sync", False)
appsink.connect("new-sample", new_sample)
bus = pipeline.get_bus()
watch_id = bus.connect("message", on_message, pipeline, loop, "one")
bus.add_signal_watch()
pipeline.set_state(Gst.State.PLAYING)
buf = Gst.Buffer()
buf.dts = Gst.CLOCK_TIME_NONE
buf.pts = Gst.CLOCK_TIME_NONE
detection = GstCv.CvDetection()
detection.x = TEST_VAL_X
detection.y = TEST_VAL_Y
GstCv.buffer_add_cv_detection_meta(buf, detection)
appsrc.emit('push-buffer', buf)
appsrc.emit('end-of-stream')
try:
loop.run()
except:
print("Error running loop")
pipeline.set_state(Gst.State.NULL)
assert (result_x == TEST_VAL_X)
assert (result_y == TEST_VAL_Y)
