.. _DS_plugin_nvvideotestsrc:

Gst-nvvideotestsrc
==================

The ``Gst-nvvideotestsrc`` plugin uses CUDA to generate video test data in a variety of formats and patterns that is written directly to GPU output buffers using the video/x-raw(memory:NVMM) data type.

.. note::
  The ``Gst-nvvideotestsrc`` plugin is currently only supported on X86. 

Outputs
-------------------

This section summarizes the outputs of the ``Gst-nvvideotestsrc`` plugin.

* Output

  *     Gst Buffer with a test pattern
  *     Video Format: NV12, I420, RGBA (NVMM)

* Control parameters

  *     gpu-id
  *     animation-mode
  *     memtype
  *     blocksize
  *     pattern

Gst Properties
----------------

The following tables describes the ``Gst`` properties of the ``Gst-nvvideotestsrc`` plugin.

.. csv-table:: nvvideotestsrc plugin properties
  :file: ../text/tables/Gst-nvvideotestsrc tables/DS_Plugin_gst-nvvideotestsrc_gst_properties.csv
  :widths: 20, 20, 20, 20
  :header-rows: 1

How to test
-----------

``nvvideotestsrc`` is currently supported for X86 only. support with "Jetson + dGPU" is not yet enabled.

Run following reference `gst-launch-1.0 pipeline` on DGPU setup.

A) Default SMPTE Pattern - 720p 60Hz

::

    gst-launch-1.0 nvvideotestsrc ! queue ! nveglglessink -e

B) Mandelbrot Pattern - 1080p 60Hz

 ::

    gst-launch-1.0 nvvideotestsrc pattern=mandelbrot ! 'video/x-raw(memory:NVMM), width=1920, height=1080, framerate=60/1' ! queue ! nveglglessink -e

C) Gradient Pattern - 720p 60Hz

::

    gst-launch-1.0 gst-launch-1.0 nvvideotestsrc pattern=2 ! queue ! nveglglessink -e