61 lines
1.6 KiB
ReStructuredText
61 lines
1.6 KiB
ReStructuredText
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.. _video:
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Video
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#####
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The video driver API offers a generic interface to video devices.
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Basic Operation
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***************
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Video Device
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============
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A video device is the abstraction of a hardware or software video function,
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which can produce, process, consume or transform video data. The video API is
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designed to offer flexible way to create, handle and combine various video
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devices.
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Endpoint
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========
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Each video device can have one or more endpoints. Output endpoints configure
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video output function and generate data. Input endpoints configure video input
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function and consume data.
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Video Buffer
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============
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A video buffer provides the transport mechanism for the data. There is no
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particular requirement on the content. The requirement for the content is
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defined by the endpoint format. A video buffer can be queued to a device
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endpoint for filling (input ep) or consuming (output ep) operation, once
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the operation is achieved, buffer can be dequeued for post-processing,
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release or reuse.
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Controls
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========
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A video control is accessed and identified by a CID (control identifier). It
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represents a video control property. Different devices will have different
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controls available which can be generic, related to a device class or vendor
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specific. The set/get control functions provide a generic scalable interface
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to handle and create controls.
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Configuration Options
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*********************
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Related configuration options:
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* :option:`CONFIG_VIDEO`
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API Reference
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*************
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.. doxygengroup:: video_interface
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:project: Zephyr
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.. doxygengroup:: video_controls
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:project: Zephyr
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