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The MediaFS Developer's Guide presents how the media filesystem (MediaFS) module expects device drivers to describe media devices and mediastores, and the devctl() messages that these drivers need to support.
This Guide is intended for:
For more information about the MME, see Introduction to the MME and the other books in the MME documentation set.
The table below may help you find what you need in this book:
For information about: | See: |
---|---|
The MediaFS standardized interface | MediaFS Overview |
The structure of MediaFS, and required POSIX function support | MediaFS Structure |
MediaFS entities, including files, directories and symbolic links | MediaFS Entities |
Media changer presentation to MediaFS | Media Changers |
How to present playback states and controls to MediaFS | Managing Playback |
Device management messages supported by MediaFS | Device Management Messages |
Playback and status update supported by MediaFS | Playback Messages |
Metadata retrieval messages supported by MediaFS | Metadata Messages |
Playback structures and constants used by MediaFS | Playback Structures and Constants |
How to retrieve album art | Getting Album Art |
MediaFS events and their structures | MediaFS Events |
Examples of code used to work with MediaFS | Appendix A: Examples |
Other MME documentation available to application developers includes:
Book | Description |
---|---|
Introduction to the MME | MME Architecture, Quickstart Guide, and FAQs. |
MME Developer's Guide | How to use the MME to program client applications. |
MME API Library Reference | MME API functions, data structures, enumerated types, and events. |
MME Technotes | MME technical notes. |
MME Utilities | Utilities used by the MME. |
MME Configuration Guide | How to configure the MME. |
QDB Developer's Guide | QDB database engine programming guide and API library reference. |
Note that the MME is a component of the QNX Aviage multimedia core package, which is available in the QNX Aviage multimedia suite of products. The MME is the main component of this core package. It is used for configuration and control of your multimedia applications.
Throughout this manual, we use certain typographical conventions to distinguish technical terms. In general, the conventions we use conform to those found in IEEE POSIX publications. The following table summarizes our conventions:
Reference | Example |
---|---|
Code examples | if( stream == NULL ) |
Command options | -lR |
Commands | make |
Environment variables | PATH |
File and pathnames | /dev/null |
Function names | exit() |
Keyboard chords | Ctrl-Alt-Delete |
Keyboard input | something you type |
Keyboard keys | Enter |
Program output | login: |
Programming constants | NULL |
Programming data types | unsigned short |
Programming literals | 0xFF, "message string" |
Variable names | stdin |
User-interface components | Cancel |
We use an arrow (→) in directions for accessing menu items, like this:
You'll find the Other... menu item under.
We use notes, cautions, and warnings to highlight important messages:
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Notes point out something important or useful. |
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Cautions tell you about commands or procedures that may have unwanted or undesirable side effects. |
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Warnings tell you about commands or procedures that could be dangerous to your files, your hardware, or even yourself. |
In our documentation, we use a forward slash (/) as a delimiter in all pathnames, including those pointing to Windows files.
We also generally follow POSIX/UNIX filesystem conventions.
At the top and bottom of our HTML docs, you'll see some or all of these buttons:
Use this button: | To move: |
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To obtain technical support for any QNX product, visit the Support + Services area on our website (www.qnx.com). You'll find a wide range of support options, including community forums.
Copyright © 2008–2009, QNX Software Systems GmbH & Co. KG. All rights reserved.
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