"""BSD 2-Clause License Copyright (c) 2019, Allied Vision Technologies GmbH All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. """ import sys from typing import Optional, Tuple from vimba import * def print_preamble(): print('///////////////////////////////////////////') print('/// Vimba API Asynchronous Grab Example ///') print('///////////////////////////////////////////\n') def print_usage(): print('Usage:') print(' python asynchronous_grab.py [/x] [-x] [camera_id]') print(' python asynchronous_grab.py [/h] [-h]') print() print('Parameters:') print(' /x, -x If set, use AllocAndAnnounce mode of buffer allocation') print(' camera_id ID of the camera to use (using first camera if not specified)') print() def abort(reason: str, return_code: int = 1, usage: bool = False): print(reason + '\n') if usage: print_usage() sys.exit(return_code) def parse_args() -> Tuple[Optional[str], AllocationMode]: args = sys.argv[1:] argc = len(args) allocation_mode = AllocationMode.AnnounceFrame cam_id = "" for arg in args: if arg in ('/h', '-h'): print_usage() sys.exit(0) elif arg in ('/x', '-x'): allocation_mode = AllocationMode.AllocAndAnnounceFrame elif not cam_id: cam_id = arg if argc > 2: abort(reason="Invalid number of arguments. Abort.", return_code=2, usage=True) return (cam_id if cam_id else None, allocation_mode) def get_camera(camera_id: Optional[str]) -> Camera: with Vimba.get_instance() as vimba: if camera_id: try: return vimba.get_camera_by_id(camera_id) except VimbaCameraError: abort('Failed to access Camera \'{}\'. Abort.'.format(camera_id)) else: cams = vimba.get_all_cameras() if not cams: abort('No Cameras accessible. Abort.') return cams[0] def setup_camera(cam: Camera): with cam: # Try to adjust GeV packet size. This Feature is only available for GigE - Cameras. try: cam.GVSPAdjustPacketSize.run() while not cam.GVSPAdjustPacketSize.is_done(): pass except (AttributeError, VimbaFeatureError): pass def frame_handler(cam: Camera, frame: Frame): print('{} acquired {}'.format(cam, frame), flush=True) cam.queue_frame(frame) def main(): print_preamble() cam_id, allocation_mode = parse_args() with Vimba.get_instance(): with get_camera(cam_id) as cam: setup_camera(cam) print('Press to stop Frame acquisition.') try: # Start Streaming with a custom a buffer of 10 Frames (defaults to 5) cam.start_streaming(handler=frame_handler, buffer_count=10, allocation_mode=allocation_mode) input() finally: cam.stop_streaming() if __name__ == '__main__': main()