| .. -*- 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 | |
| control | |
| extended-controls | |
| format | |
| planar-apis | |
| crop | |
| selection-api | |
| streaming-par |