Programming the camera: Difference between revisions
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(Initial stub for how to program the camera) |
(Getting started with the camera (plus inprogress notes)) |
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This page explores how to interact with the laptop's built-in video camera. |
This page explores how to interact with the laptop's built-in video camera. |
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== Getting started == |
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First, let's see the quickest way we can capture a still image from the camera--using a GStreamer command-line tool: |
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gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=foo.png |
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You'll need to run the above command in either a terminal in the developer console or one of the virtual terminals (e.g. <tt>ctrl-alt-f1</tt>). Note this means you don't need the Sugar GUI to be running to access the camera. |
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===== Camera ===== |
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* Have to script v4l2 via gstreamer to capture a single frame from the camera. See sugar/shell/intro/glive.py for sample code |
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* Try this from the command line: <tt>gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=foo.png</tt> |
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===== Camera-as-video-camera (v4l2?) ===== |
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* Is a regular v4l2 device available via gstreamer (gst module) |
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* Try this from a terminal in the developer console: <tt>gst-launch-0.10 v4l2src ! ximagesink</tt> (The image will appear <i>behind </i>the developer console window so you'll need to move the window aside.) |
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[[Category:Developers]] |
[[Category:Developers]] |
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Revision as of 15:10, 13 April 2007
This page explores how to interact with the laptop's built-in video camera.
Getting started
First, let's see the quickest way we can capture a still image from the camera--using a GStreamer command-line tool:
gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=foo.png
You'll need to run the above command in either a terminal in the developer console or one of the virtual terminals (e.g. ctrl-alt-f1). Note this means you don't need the Sugar GUI to be running to access the camera.
Camera
- Have to script v4l2 via gstreamer to capture a single frame from the camera. See sugar/shell/intro/glive.py for sample code
- Try this from the command line: gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=foo.png
Camera-as-video-camera (v4l2?)
- Is a regular v4l2 device available via gstreamer (gst module)
- Try this from a terminal in the developer console: gst-launch-0.10 v4l2src ! ximagesink (The image will appear behind the developer console window so you'll need to move the window aside.)