def start(self, quality, bitrate, duration):
""" Start recording a video of quality and duration """
# organize params for raspivid command
filename = '%s/%s_%smbps_%s.h264' % (self._working_directory,
quality,
bitrate,
datetime.now().strftime('%Y.%m.%d_%H%M'))
params = {'filename': filename,
't': int(duration * 1000),
'b': int(bitrate * 10**6)}
params.update(self._quality_map[quality])
raspivid_command = 'raspivid --hflip --vflip --vstab --width %(w)s --height %(h)s --framerate 25 --bitrate %(b)s --timeout %(t)s --output %(filename)s' % params
self._pid = self._run_and_get_pid(raspivid_command)
print 'pid is', self._pid
self._active = True
self.started_at = time.time()
# memorize recording options
self.filename = filename
self.quality = quality
self.bitrate = bitrate
# don't interrupt raspivid, it will finish itself
# we're just interested when recording is finished
self._timer_id = Watchdog.set_timeout(duration + 1, self.stop)
print 'recorder started'
def redraw_menu(btn):
# boooooo
global state
global menu_timer_id
if state != 'menu': show_menu()
# timers
Watchdog.clear_timeout(menu_timer_id)
menu_timer_id = Watchdog.set_timeout(MENU_TIMEOUT, hide_menu)
stop_select_propagation = False
# first, allow to go up if it's possible and requested
if btn == 'up':
if menu['level']:
menu['level'].pop()
# second, go down to the selected item
item, prev_item = menu, menu
for level in menu['level']:
prev_item = item
item = item['items'][level]
# third, allow to go even lower, if it's possible and requested
if btn in ['down', 'select']:
if 'items' in item['items'][item['selected']]:
menu['level'].append(item['selected'])
prev_item = item
item = item['items'][item['selected']]
stop_select_propagation = True
# allow to go through items of this level
if btn in ['left', 'right']:
if 'left' == btn:
delta = -1
if 'right' == btn:
delta = +1
item['selected'] = (item['selected'] + delta) % len(item['items'])
# prepare item meta to be printed to screen
prev_name = ''
name = item['items'][item['selected']]['name']
description = item['items'][item['selected']].get('description', '')
if not description:
if item != prev_item:
prev_name = '%s%s' % (lcd.CHAR_ARROW_UP, prev_item['items'][prev_item['selected']]['name'])
position = '%s%d/%d%s' % (lcd.CHAR_ARROW_LEFT,
item['selected'] + 1, len(item['items']),
lcd.CHAR_ARROW_RIGHT)
lcd.home()
lcd.clear()
line1 = '%-16s' % (name, )
line2 = '%-11s%5s' % (description or prev_name, position)
lcd.message('%s\n%s' % (line1, line2))
# finally process SELECT
if btn == 'select' and not stop_select_propagation:
selected_item = item['items'][item['selected']]
if 'call' in selected_item:
func, args = selected_item['call'], selected_item['args']
func(*args)
