我们从Python开源项目中，提取了以下16个代码示例，用于说明如何使用picamera.Color()。
def _set_annotate_foreground(self, value): self._check_camera_open() if not isinstance(value, Color): raise PiCameraValueError( 'annotate_foreground must be a Color') elif self._camera.annotate_rev < 3: if value.rgb_bytes != (255, 255, 255): warnings.warn( PiCameraFallback( "Firmware does not support setting a custom foreground " "annotation color; using white instead")) return mp = self._camera.control.params[mmal.MMAL_PARAMETER_ANNOTATE] mp.custom_text_color = True ( mp.custom_text_Y, mp.custom_text_U, mp.custom_text_V, ) = value.yuv_bytes self._camera.control.params[mmal.MMAL_PARAMETER_ANNOTATE] = mp
def _get_annotate_background(self): self._check_camera_open() mp = self._camera.control.params[mmal.MMAL_PARAMETER_ANNOTATE] if self._camera.annotate_rev == 3: if mp.enable_text_background: if mp.custom_background_color: return Color.from_yuv_bytes( mp.custom_background_Y, mp.custom_background_U, mp.custom_background_V) else: return Color('black') else: return None else: if mp.black_text_background: return Color('black') else: return None
def _get_annotate_background(self): self._check_camera_open() mp = self._get_annotate_settings() if self._annotate_v3: if mp.enable_text_background: if mp.custom_background_color: return Color.from_yuv_bytes( mp.custom_background_Y, mp.custom_background_U, mp.custom_background_V) else: return Color('black') else: return None else: if mp.black_text_background: return Color('black') else: return None
def _set_annotate_foreground(self, value): self._check_camera_open() if not isinstance(value, Color): raise PiCameraValueError( 'annotate_foreground must be a Color') elif not self._annotate_v3: if value.rgb_bytes != (255, 255, 255): warnings.warn( PiCameraFallback( "Firmware does not support setting a custom foreground " "annotation color; using white instead")) return mp = self._get_annotate_settings() mp.custom_text_color = True ( mp.custom_text_Y, mp.custom_text_U, mp.custom_text_V, ) = value.yuv_bytes mmal_check( mmal.mmal_port_parameter_set(self._camera[0].control, mp.hdr), prefix="Failed to set annotation foreground")
def take_picture(self, photoDir, overlayMessage=None): logging.debug('taking a picture') if not os.path.exists(photoDir): os.makedirs(photoDir) fileName = ('{}_gd_photo.jpg'.format(datetime.datetime.now().strftime("%H%M%S"))) file = ('{}/{}'.format(photoDir, fileName)) overlay = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S') if overlayMessage is not None: overlay += (' {}'.format(overlayMessage)) camera = picamera.PiCamera() try: camera.resolution = (1024, 768) camera.rotation = 90 camera.annotate_background = picamera.Color('black') camera.annotate_text = overlay camera.capture(file) finally: camera.close() return file
def _get_annotate_foreground(self): self._check_camera_open() mp = self._camera.control.params[mmal.MMAL_PARAMETER_ANNOTATE] if self._camera.annotate_rev == 3 and mp.custom_text_color: return Color.from_yuv_bytes( mp.custom_text_Y, mp.custom_text_U, mp.custom_text_V) else: return Color('white')
def _get_annotate_foreground(self): self._check_camera_open() mp = self._get_annotate_settings() if self._annotate_v3 and mp.custom_text_color: return Color.from_yuv_bytes( mp.custom_text_Y, mp.custom_text_U, mp.custom_text_V) else: return Color('white')
def _set_annotate_background(self, value): self._check_camera_open() if value is True: warnings.warn( PiCameraDeprecated( 'Setting PiCamera.annotate_background to True is ' 'deprecated; use PiCamera.color.Color("black") instead')) value = Color('black') elif value is False: warnings.warn( PiCameraDeprecated( 'Setting PiCamera.annotate_background to False is ' 'deprecated; use None instead')) value = None elif value is None: pass elif not isinstance(value, Color): raise PiCameraValueError( 'annotate_background must be a Color or None') elif not self._annotate_v3 and value.rgb_bytes != (0, 0, 0): warnings.warn( PiCameraFallback( "Firmware does not support setting a custom background " "annotation color; using black instead")) mp = self._get_annotate_settings() if self._annotate_v3: if value is None: mp.enable_text_background = False else: mp.enable_text_background = True mp.custom_background_color = True ( mp.custom_background_Y, mp.custom_background_U, mp.custom_background_V, ) = value.yuv_bytes else: if value is None: mp.black_text_background = False else: mp.black_text_background = True mmal_check( mmal.mmal_port_parameter_set(self._camera[0].control, mp.hdr), prefix="Failed to set annotation background")
def RunCamera(argv, killer): time_len = int(argv[1]) segment_len = int(argv[2]) with picamera.PiCamera() as camera: camera.resolution = (1360, 768) camera.framerate = 24 camera.brightness = 60 camera.contrast = 20 camera.sharpness = 20 camera.annotate_foreground = picamera.Color('black') camera.annotate_background = picamera.Color('white') camera.annotate_text = dt.datetime.now().strftime('%Y-%m-%d %H:%M:%S') camera.annotate_text_size = 22 zero = dt.datetime.now() while (dt.datetime.now() - zero).seconds <= time_len: start = dt.datetime.now() file_name = start.strftime('/home/pi/camera/%Y%m%d-%H%M%S.h264') print 'Record: ' + file_name camera.start_recording(file_name, bitrate=4500000) now = dt.datetime.now() while ((now - start).seconds <= segment_len) and ((now - zero).seconds <= time_len): camera.annotate_text = dt.datetime.now().strftime('%Y-%m-%d %H:%M:%S') camera.wait_recording(1) now = dt.datetime.now() if killer.kill_now: camera.stop_recording() return camera.stop_recording()
def _set_annotate_background(self, value): self._check_camera_open() if value is True: warnings.warn( PiCameraDeprecated( 'Setting PiCamera.annotate_background to True is ' 'deprecated; use PiCamera.color.Color("black") instead')) value = Color('black') elif value is False: warnings.warn( PiCameraDeprecated( 'Setting PiCamera.annotate_background to False is ' 'deprecated; use None instead')) value = None elif value is None: pass elif not isinstance(value, Color): raise PiCameraValueError( 'annotate_background must be a Color or None') elif self._camera.annotate_rev < 3 and value.rgb_bytes != (0, 0, 0): warnings.warn( PiCameraFallback( "Firmware does not support setting a custom background " "annotation color; using black instead")) mp = self._camera.control.params[mmal.MMAL_PARAMETER_ANNOTATE] if self._camera.annotate_rev == 3: if value is None: mp.enable_text_background = False else: mp.enable_text_background = True mp.custom_background_color = True ( mp.custom_background_Y, mp.custom_background_U, mp.custom_background_V, ) = value.yuv_bytes else: if value is None: mp.black_text_background = False else: mp.black_text_background = True self._camera.control.params[mmal.MMAL_PARAMETER_ANNOTATE] = mp
