Removed camera.gstreamer.

Too much of a pain in the ass to handle, too many format options to
think of, too many combinations of pipelines to support, and if I don't
think of those beforehand then I'll have to offload all of that
complexity on the user.
This commit is contained in:
Fabio Manganiello 2023-05-27 22:19:50 +02:00
parent 1c40e5e843
commit b4d714df8a
Signed by: blacklight
GPG key ID: D90FBA7F76362774
5 changed files with 0 additions and 126 deletions

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``camera.gstreamer``
======================================
.. automodule:: platypush.plugins.camera.gstreamer
:members:

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@ -19,7 +19,6 @@ Plugins
platypush/plugins/camera.android.ipcam.rst platypush/plugins/camera.android.ipcam.rst
platypush/plugins/camera.cv.rst platypush/plugins/camera.cv.rst
platypush/plugins/camera.ffmpeg.rst platypush/plugins/camera.ffmpeg.rst
platypush/plugins/camera.gstreamer.rst
platypush/plugins/camera.ir.mlx90640.rst platypush/plugins/camera.ir.mlx90640.rst
platypush/plugins/camera.pi.rst platypush/plugins/camera.pi.rst
platypush/plugins/chat.irc.rst platypush/plugins/chat.irc.rst

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from typing import Optional
from PIL import Image
from PIL.Image import Image as ImageType
from platypush.plugins.camera import CameraPlugin
from platypush.plugins.camera.gstreamer.model import GStreamerCamera
from platypush.common.gstreamer import Pipeline
class CameraGstreamerPlugin(CameraPlugin):
"""
Plugin to interact with a camera over GStreamer.
Requires:
* **gst-python**
* **pygobject**
On Debian and derived systems:
* ``[sudo] apt-get install python3-gi python3-gst-1.0``
On Arch and derived systems:
* ``[sudo] pacman -S gst-python``
"""
_camera_class = GStreamerCamera
def __init__(self, device: Optional[str] = '/dev/video0', **opts):
"""
:param device: Path to the camera device (default ``/dev/video0``).
:param opts: Camera options - see constructor of :class:`platypush.plugins.camera.CameraPlugin`.
"""
super().__init__(device=device, **opts)
def prepare_device(self, camera: GStreamerCamera) -> Pipeline:
pipeline = Pipeline()
src = pipeline.add_source('v4l2src', device=camera.info.device)
convert = pipeline.add('videoconvert')
assert camera.info and camera.info.resolution
video_filter = pipeline.add(
'capsfilter',
caps='video/x-raw,format=RGB,width={width},height={height},framerate={fps}/1'.format(
width=camera.info.resolution[0],
height=camera.info.resolution[1],
fps=camera.info.fps,
),
)
sink = pipeline.add_sink('appsink', name='appsink', sync=False)
pipeline.link(src, convert, video_filter, sink)
return pipeline
def start_camera(
self, camera: GStreamerCamera, preview: bool = False, *args, **kwargs
):
super().start_camera(*args, camera=camera, preview=preview, **kwargs)
if camera.object:
camera.object.play()
def release_device(self, camera: GStreamerCamera):
if camera.object:
camera.object.stop()
def capture_frame(self, camera: GStreamerCamera, *_, **__) -> Optional[ImageType]:
if not (camera.info and camera.info.fps and camera.info.resolution):
return None
timed_out = not camera.object.data_ready.wait(
timeout=5 + (1.0 / camera.info.fps)
)
if timed_out:
self.logger.warning('Frame capture timeout')
return None
data = camera.object.data
if data is None:
return None
camera.object.data_ready.clear()
if (
not data
and len(data) != camera.info.resolution[0] * camera.info.resolution[1] * 3
):
return None
return Image.frombytes('RGB', camera.info.resolution, data)
# vim:sw=4:ts=4:et:

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manifest:
events: {}
install:
pip:
- numpy
- Pillow
- pygobject
apt:
- python3-gi
- python3-gst-1.0
pacman:
- gst-python
- python-gobject
package: platypush.plugins.camera.gstreamer
type: plugin

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from platypush.common.gstreamer import Pipeline
from platypush.plugins.camera import CameraInfo, Camera
class GStreamerCamera(Camera):
info: CameraInfo
object: Pipeline
# vim:sw=4:ts=4:et: