def _make_output(self, output_info, data, volume):
output = QtMultimedia.QAudioOutput(output_info,
output_info.preferredFormat())
output.setVolume(volume)
output.stateChanged.connect(lambda: self._delete_output(output))
buffer = QtCore.QBuffer()
buffer.open(QtCore.QIODevice.ReadWrite)
buffer.write(data)
buffer.seek(0)
output.start(buffer)
return output
def run(self, pixmap, graphics_view, loop=False):
self.loop = loop
self.pixmap = pixmap
self.graphics_view = graphics_view
self.timer = QtCore.QTimer(self.graphics_view)
self.timer.timeout.connect(self.update_frame)
self.timer.start(self.period_ms * 1000)
self.t = 0
if self.audio_format is not None:
self.audio_output = QtMultimedia.QAudioOutput(
self.audio_format, self.graphics_view
)
self.audio_output.stateChanged.connect(self.audio_state_handler)
# start audio streaming
self.audio_input.open(QtCore.QIODevice.ReadOnly)
self.audio_output.start(self.audio_input)
self.display_frame()
self.graphics_view.fitInView(self.pixmap, QtCore.Qt.KeepAspectRatio)