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Diffstat (limited to 'Documentation/linux_tv/media/v4l/common.rst')
| -rw-r--r-- | Documentation/linux_tv/media/v4l/common.rst | 56 |
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diff --git a/Documentation/linux_tv/media/v4l/common.rst b/Documentation/linux_tv/media/v4l/common.rst new file mode 100644 index 000000000000..0e85b46b2efc --- /dev/null +++ b/Documentation/linux_tv/media/v4l/common.rst @@ -0,0 +1,56 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _common: + +################### +Common API Elements +################### +Programming a V4L2 device consists of these steps: + +- Opening the device + +- Changing device properties, selecting a video and audio input, video + standard, picture brightness a. o. + +- Negotiating a data format + +- Negotiating an input/output method + +- The actual input/output loop + +- Closing the device + +In practice most steps are optional and can be executed out of order. It +depends on the V4L2 device type, you can read about the details in +:ref:`devices`. In this chapter we will discuss the basic concepts +applicable to all devices. + + +.. toctree:: + :maxdepth: 1 + + open + querycap + app-pri + video + audio + tuner + standard + dv-timings + controls + format + planar-apis + crop + selection-api + streaming-par + + + + +.. ------------------------------------------------------------------------------ +.. This file was automatically converted from DocBook-XML with the dbxml +.. library (https://github.com/return42/sphkerneldoc). The origin XML comes +.. from the linux kernel, refer to: +.. +.. * https://github.com/torvalds/linux/tree/master/Documentation/DocBook +.. ------------------------------------------------------------------------------ |