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Enable the --fps option on non Windows systems & set CAP_PROP_BUFFERSIZE to 1 when using OpenCV for live capture

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Autumn 2021-10-01 02:35:00 +10:00
parent 8b72102583
commit e49cbdb9c0
2 changed files with 4 additions and 4 deletions
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7
facetracker.py
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@ -13,12 +13,12 @@ if os.name == 'nt':
parser.add_argument("-a", "--list-dcaps", type=int, help="Set this to -1 to list all cameras and their available capabilities, set this to a camera id to list that camera's capabilities", default=None)
parser.add_argument("-W", "--width", type=int, help="Set camera and raw RGB width", default=640)
parser.add_argument("-H", "--height", type=int, help="Set camera and raw RGB height", default=360)
parser.add_argument("-F", "--fps", type=int, help="Set camera frames per second", default=24)
parser.add_argument("-D", "--dcap", type=int, help="Set which device capability line to use or -1 to use the default camera settings", default=None)
parser.add_argument("-B", "--blackmagic", type=int, help="When set to 1, special support for Blackmagic devices is enabled", default=0)
else:
parser.add_argument("-W", "--width", type=int, help="Set raw RGB width", default=640)
parser.add_argument("-H", "--height", type=int, help="Set raw RGB height", default=360)
parser.add_argument("-F", "--fps", type=int, help="Set camera frames per second", default=24)
parser.add_argument("-c", "--capture", help="Set camera ID (0, 1...) or video file", default="0")
parser.add_argument("-M", "--mirror-input", action="store_true", help="Process a mirror image of the input video")
parser.add_argument("-m", "--max-threads", type=int, help="Set the maximum number of threads", default=1)
@ -153,18 +153,17 @@ target_port = args.port
if args.faces >= 40:
print("Transmission of tracking data over network is not supported with 40 or more faces.")
fps = 0
fps = args.fps
dcap = None
use_dshowcapture_flag = False
if os.name == 'nt':
fps = args.fps
dcap = args.dcap
use_dshowcapture_flag = True if args.use_dshowcapture == 1 else False
input_reader = InputReader(args.capture, args.raw_rgb, args.width, args.height, fps, use_dshowcapture=use_dshowcapture_flag, dcap=dcap)
if args.dcap == -1 and type(input_reader) == DShowCaptureReader:
fps = min(fps, input_reader.device.get_fps())
else:
input_reader = InputReader(args.capture, args.raw_rgb, args.width, args.height, fps, use_dshowcapture=use_dshowcapture_flag)
input_reader = InputReader(args.capture, args.raw_rgb, args.width, args.height, fps)
if type(input_reader.reader) == VideoReader:
fps = 0

1
input_reader.py
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@ -111,6 +111,7 @@ class OpenCVReader(VideoReader):
super(OpenCVReader, self).__init__(capture, camera=True)
self.cap.set(3, width)
self.cap.set(4, height)
self.cap.set(38, 1)
def is_open(self):
return super(OpenCVReader, self).is_open()
def is_ready(self):