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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Graphics
Video Capture Developer's Guide
The video capture framework provides applications the ability to capture frames from a video input source. These frames can be passed to a graphics component such as Screen for display.
Video Capture Manager
The Video Capture manager is based on a client/server model where an application is a client that's requesting capture services from the server (Video Capture manager).

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
- Quickstart Guide
- System Architecture
  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
- OS Components & Operations
- Graphics
  - Gestures Library Reference
    The Gestures library provides gesture recognizers to detect gestures through touch events that occur when you place one or more fingers on a touch screen.
  - Image Library Reference
  - Input Events Library Reference
    The Input Events library provides the framework necessary for Screen Graphics Subsystem to communicate with your touch driver.
  - OpenWF Configuration Developer's Guide
    If you are integrating a new display, you must configure and provide the parameters of your display based on its specifications via the OpenWF Display Configuration API (Wfdcfg Library).
  - OpenWF Display Server User's Guide
    The OpenWF Display Server (wfd-server) is a resource manager that provides applications the ability to show image buffers directly to the display controller via the OpenWF Display API.
  - Screen Graphics Subsystem Developer's Guide
    QNX Screen Graphics Subsystem is a graphics framework that provides all the functionality necessary to develop interactive user experiences.
  - Video Capture Developer's Guide
    The video capture framework provides applications the ability to capture frames from a video input source. These frames can be passed to a graphics component such as Screen for display.
    - Using Video Capture
      The video capture framework provides applications the ability to capture frames from a video input source. These frames can be passed to a graphics component such as Screen for display.
    - Video Capture Manager
      The Video Capture manager is based on a client/server model where an application is a client that's requesting capture services from the server (Video Capture manager).
      - vcap-mgr
        Enable multiple users to access frames and the loading of multiple video capture drivers
    - Video Capture API (capture.h)
      The video capture API includes all the functions, data structures, and constants needed for video capture. It does not handle video display, which should be handled by another component, such as Screen.
- Programming
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.
- Utilities & Libraries
- Migrating to QNX OS 8.0
QNX Software in the Cloud
QNX Software in the Cloud enables developers to use the QNX OS in the Amazon cloud environment.
QNX Toolkit for Visual Studio Code
This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
QNX Hypervisor User's Guide
This User's Guide explains the QNX hypervisor architecture and provides instructions for installing and running a QNX Hypervisor system, changing system components and configuration, and using hypervisor features such as virtual devices (vdevs).
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

Video Capture Manager

Graphics and Screen4.0 (8.x)Video Capture Developer's GuideAPIProgramming

The Video Capture manager is based on a client/server model where an application is a client that's requesting capture services from the server (Video Capture manager).

The Video Capture manager is resource manager that, together with the Video Capture framework, allows for the loading of multiple drivers as well as access to frames from a video input source by multiple users. The Video capture framework enables clients to capture frames from a video input source, but the implementation of video capture libraries allow only one user (consumer) attach to one specific input source. The framework relies on the libraries having exclusive access of the hardware; therefore, multiple consumers of the same input source isn't possible.

The Video capture manager adds a level of abstraction to allow multiple consumers to have access to the frames for consumption and multiple producers to load vcapture drivers. These added functionality is particularly important in a hypervisor system where the possibility of mutliple guests can be consumers.

To enable the Video capture manager, you must start vcap-mgr. The vcap-mgr utility:

provides a mount point for an interface through which it accepts commands (/dev/vcap-mgr/command)
supports the querying of the available capture sources (/dev/vcap-mgr/video_ins)

Page updated: March 05, 2025