def window_flip_and_save():
global dump_idx
win = kivy.getWindow()
glReadBuffer(GL_FRONT)
data = glReadPixels(0, 0, win.width, win.height, GL_RGB, GL_UNSIGNED_BYTE)
surface = pygame.image.fromstring(str(buffer(data)), win.size, 'RGB', True)
filename = '%s%05d.%s' % (dump_prefix, dump_idx, dump_format)
pygame.image.save(surface, filename)
dump_idx += 1
def window_flip_and_save():
global img_current
win = kivy.getWindow()
with lock_current:
if not connected:
return
sem_next.acquire()
with lock_current:
glReadBuffer(GL_FRONT)
data = glReadPixels(0, 0, win.width, win.height, GL_RGB,
GL_UNSIGNED_BYTE)
img_current = str(buffer(data))
sem_current.release()
def _stream_video(self):
global img_current
lfps = []
dt = 0
frames = 0
fps_wanted = self.server.config.get('fps')
if fps_wanted == '':
fps_wanted = 0
fps_wanted = float(fps_wanted)
if fps_wanted <= 1:
fps_wanted = 0
else:
fps_wanted = 1 / fps_wanted
size = self.server.config.get('size')
if size == '':
size = None
else:
size = map(int, size.split('x'))
Logger.info(
'MjpegServer: Client %s:%d connected' % self.client_address)
self.send_response(200, 'OK')
self.boundary = 'kivy-mjpegserver-boundary-%d' % (random.randint(1,
9999999))
self.send_header('Server', 'Kivy MjpegServer')
self.send_header('Content-type',
'multipart/x-mixed-replace; boundary=%s' % self.boundary)
self.end_headers()
# don't accept connection until the window is created
# XXX really needed ?
while not kivy.getWindow():
time.sleep(0.1)
win = kivy.getWindow()
dt = dt_current = dt_old = time.time()
while keep_running():
# SYNC START
sem_current.acquire()
with lock_current:
im = Image.fromstring('RGB', win.size, img_current)
img_current = None
sem_next.release()
# SYNC END
buf = StringIO.StringIO()
if size:
im = im.resize(size)
im = im.transpose(Image.FLIP_TOP_BOTTOM)
im.save(buf, format='JPEG')
jpeg = buf.getvalue()
self.wfile.write('--%s\r\n' % self.boundary)
self.wfile.write('Content-Type: image/jpeg\r\n')
self.wfile.write('Content-Length: %d\r\n\r\n' % len(jpeg))
self.wfile.write(jpeg)
dt_old = dt_current
dt_current = time.time()
d = dt_current - dt_old
if d < fps_wanted:
time.sleep(d)
frames += 1
if dt_current - dt > 2.:
fps = frames / (dt_current - dt)
lfps.append(fps)
x = sum(lfps) / len(lfps)
msg = 'MjpegServer: Current FPS: %.1f, Average: %.1f' % (fps, x)
Logger.debug(msg)
dt = dt_current
frames = 0
