class _CameraWidget(QWidget):
imagecaptured = pyqtSignal(QPixmap)
cancel = pyqtSignal()
def __init__(self, parent=None):
super(_CameraWidget, self).__init__(parent)
self.setLayout(QGridLayout())
self.toolbar = QToolBar()
spacer = QWidget()
spacer.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
self.toolbar.setIconSize(QSize(48, 48))
self.toolbar.addWidget(spacer)
self.swapaction = self.toolbar.addAction(QIcon(":/widgets/cameraswap"),
"Swap Camera")
self.swapaction.triggered.connect(self.swapcamera)
self.current_camera_index = 0
self.camera = None
self.viewfinder = QCameraViewfinder()
self.viewfinder.mousePressEvent = self.capture
self.viewfinder.setAspectRatioMode(Qt.KeepAspectRatioByExpanding)
self.update_camera_buttons()
self.capturebutton = QPushButton("Capture", self)
self.capturebutton.pressed.connect(self.capture)
self.actionCancel = self.toolbar.addAction(QIcon(":/icons/cancel"),
"Cancel")
self.actionCancel.triggered.connect(self._cancel)
self.layout().setContentsMargins(0, 0, 0, 0)
self.layout().addWidget(self.toolbar)
self.layout().addWidget(self.viewfinder)
self.layout().addWidget(self.capturebutton)
self.viewfinder.show()
def __del__(self):
if self.camera:
self.camera.unload()
def _cancel(self):
if self.camera:
self.camera.unload()
self.cancel.emit()
@property
def list_of_cameras(self):
return QCameraInfo.availableCameras()
def update_camera_buttons(self):
if len(self.list_of_cameras) <= 1:
self.swapaction.setVisible(False)
def capture(self, *args):
self.camera.searchAndLock()
self.camera_capture.capture()
self.camera.unlock()
def swapcamera(self):
cameras = QCameraInfo.availableCameras()
if self.current_camera_index + 1 == len(cameras):
self.current_camera_index = 0
else:
self.current_camera_index += 1
self.start(self.current_camera_index)
@property
def camera_res(self):
width, height = tuple(roam.config.settings['camera_res'].split(','))
return width, height
def imageCaptured(self, frameid, image):
# TODO Doing a pixmap convert here is a waste but downstream needs a qpixmap for now
# refactor later
if self.camera:
self.camera.unload()
self.imagecaptured.emit(QPixmap.fromImage(image))
def start(self, dev=1):
if self.camera:
self.camera.unload()
cameras = QCameraInfo.availableCameras()
self.camera = QCamera(cameras[dev])
self.camera.setViewfinder(self.viewfinder)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.camera.start()
self.camera_capture = QCameraImageCapture(self.camera)
self.camera_capture.setCaptureDestination(
QCameraImageCapture.CaptureToBuffer)
self.camera_capture.imageCaptured.connect(self.imageCaptured)
class VideoWindow(QMainWindow):
def __init__(self, parent=None):
super(VideoWindow, self).__init__(parent)
def setupVideoUi(self):
self.mediaPlayer = QMediaPlayer(None, QMediaPlayer.VideoSurface)
self.camera = QCamera(0)
self.cameraviewfinder = QCameraViewfinder()
self.cameraviewfinder.setAspectRatioMode(Qt.IgnoreAspectRatio)
self.cameramode = self.camera.CaptureMode(2)
self.cameraimgcap = QCameraImageCapture(self.camera)
self.videoWidget = QVideoWidget()
self.mediaPlayer.setVideoOutput(self.videoWidget)
self.camera.setViewfinder(self.cameraviewfinder)
def exitCall(self):
sys.exit(app.exec_())
def play(self, fileNameList):
self.fileNameList = fileNameList
self.play_next()
def play_next(self):
global play_times
if play_times == len(self.fileNameList):
self.timer_play.stop()
return
single_file = self.fileNameList[play_times]
try:
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile(single_file)))
except Exception:
print("配置视频播放出错")
print(Exception)
#播放视频
self.mediaPlayer.play()
# 开启倒计时,进行连续播放
self.single_time = math.ceil(self.getDuration(single_file))
self.timer_play = QtCore.QTimer()
self.timer_play.timeout.connect(self.play_next)
# 定时器以毫秒作为单位
self.timer_play.start(self.single_time * 1000)
play_times = play_times + 1
def camera_start(self):
# 开启摄像头
# self.cameraviewfinder.resize(640, 480)
self.camera.start()
# 获取视频时长(单位为秒)
def getDuration(self, fileName):
total_times = 0
if type(fileName) != list:
clip = VideoFileClip(fileName)
single_time = clip.duration
clip.reader.close()
clip.audio.reader.close_proc()
return single_time
for f in fileName:
clip = VideoFileClip(f)
times = clip.duration
total_times = total_times + times
clip.reader.close()
clip.audio.reader.close_proc()
return total_times
def pause(self):
self.mediaPlayer.pause()