pynq_composable.video Module

The pynq_composable.video module provides high level abstractions to start the video streams for a variety of sources and sinks. The pynq_composable.video.VideoStream abstracts all the low level details and instantiates the right driver depending on the video source and sink.

class pynq_composable.video.OpenCVDPVideo(ol: pynq.overlay.Overlay, filename: typing.Union[int, str], mode=VideoMode: width=1280 height=720 bpp=24 fps=60)[source]

Bases: pynq_composable.video.OpenCVPLVideo

Wrapper for a webcam/file video pipeline streamed to DisplayPort

start()[source]: Configure and start the video stream from/to PS

stop()[source]: Stop video stream

class pynq_composable.video.OpenCVPLVideo(ol: pynq.overlay.Overlay, filename: typing.Union[int, str], mode=VideoMode: width=1280 height=720 bpp=24 fps=60)[source]

Bases: object

Wrapper for a OpenCV video stream pipeline that sinks on PL

close()[source]: Uninitialise the drivers, stopping the pipeline beforehand

pause()[source]: Pause tie

readframe()[source]: Read an image from the video stream

start()[source]: Start video stream by configuring it

stop()[source]: Stop the video stream

class pynq_composable.video.PLDPVideo(ol: pynq.overlay.Overlay, source: pynq_composable.video.VSource = VSource.HDMI)[source]

Bases: object

Wrapper for PL Video stream sources that sink on DisplayPort

property modein: Return input video source mode

property modeout: Return output video sink mode

start()[source]: Configure and start the HDMI

stop()[source]: Stop the HDMI

class pynq_composable.video.PLPLVideo(ol: pynq.overlay.Overlay, source: pynq_composable.video.VSource = VSource.HDMI)[source]

Bases: object

PLPLVideo class

Handles video streams that start in the PL and end in the PL

property modein: Return input video source mode

property modeout: Return output video sink mode

start()[source]

Configure and start the Video source

Configures hdmi_in or mipi and hdmi_out. Then starts the source and sink, and finally tie them together

stop()[source]: Closes source and sink

class pynq_composable.video.VSink(value)[source]

Bases: enum.Enum

Suported output video sinks

DP = 2

HDMI = 1

class pynq_composable.video.VSource(value)[source]

Bases: enum.Enum

Suported input video sources

HDMI = 2

MIPI = 3

OpenCV = 1

class pynq_composable.video.VideoStream(ol: pynq.overlay.Overlay, source: pynq_composable.video.VSource = VSource.HDMI, sink: pynq_composable.video.VSink = VSink.HDMI, file: int = 0, mode: Optional[pynq.lib.video.common.VideoMode] = None)[source]

Bases: object

VideoStream class

Handles DisplayPort output paths .start: configures hdmi_in and hdmi_out starts them and tie them together .stop: closes hdmi_in and hdmi_out

property mode: Return mode

pause()[source]: Pause the stream

start()[source]: Start the video stream

stop()[source]: Stop the video stream