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<concept id="GUID-E2252589-DCFB-5272-8FB3-701712D7F417" xml:lang="en"><title>Multimedia

Quick Start</title><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>This document provides entry points for readers seeking to understand the

technology of the Symbian platform Multimedia module and its documentation. </p>

<p>Symbian platform phones are typically loaded with multimedia gadgets such

as cameras (for recording still and video images), radios, video and music

players. The Multimedia module provides a means of accessing and controlling

the hardware that drives these features. </p>

<section id="GUID-CA3522A7-66A7-5D62-B9BB-03993CD62884"><title>Getting started

with Multimedia</title> <p>Multimedia functionality is summarized below: </p> <p><b>Playing

and Recording audio and video</b> </p> <p>You can write applications to play

and record audio and video: </p> <p><b>Audio</b> </p> <ul>

<li id="GUID-8A03FD08-FBFA-5B60-A898-41BB887ED991"><p>Play recorded audio

files from a device using <xref href="GUID-D62A282E-9DEA-5EF3-A606-20647BC5049D.dita">Audio

Client</xref>. </p> </li>

<li id="GUID-1D730F97-1235-57DB-B05A-0E9E98EE3738"><p>Make audio recordings

from the device using <xref href="GUID-D62A282E-9DEA-5EF3-A606-20647BC5049D.dita">Audio

Client</xref>. </p> </li>

<li id="GUID-570F84B8-FB2B-5441-B51A-223738580BFE"><p>Record streaming audio

using <xref href="GUID-715E0EA4-8B3D-5DDF-B773-922E367B114F.dita">Streaming Audio

Recorder</xref>. </p> </li>

<li id="GUID-53C9CEEA-6C66-5F02-9DB8-DBB4E6B83333"><p>Play streaming audio

using <xref href="GUID-68417158-D625-56BF-BDD5-BE49A7651CED.dita">Streaming Audio

Player</xref>. </p> </li>

</ul> <p><b>Video</b> </p> <ul>

<li id="GUID-B4110157-E99B-5DCF-8D62-BB1BB2AFACBF"><p>Play recorded video

files from a device using the <xref href="GUID-5F4510C9-5B16-593A-A225-37606800915B.dita">Video

Client</xref> video player. </p> </li>

<li id="GUID-7D0B1BF3-7A65-5DD9-B582-E8975DC46DF4"><p>Make video recordings

files from a device using the <xref href="GUID-18D7228F-A1E5-594A-B654-EF5D74CE17D2.dita">Video

Client</xref> video recorder. </p> </li>

<li id="GUID-20F83D16-A8A5-5275-8752-4A9FBB25F60F"><p>Display subtitles artwork

on a video window using the <xref href="GUID-80E8BA3A-FDF3-50A5-BF44-181C40C31F09.dita">Video

Subtitle CRP</xref> component. </p> </li>

<li id="GUID-1B6988C8-FB8E-518C-9AFF-AD0836D7A63E"><p>Create and destroy a

surface for video rendering using the <xref href="GUID-D1F29744-EB92-5811-A735-B0BC1B352ED5.dita">Video

Renderer</xref> component. </p> </li>

</ul> <p><b>Accessing multimedia hardware</b> </p> <p>Devices may include

the following hardware components: </p> <ul>

<li id="GUID-1C19D943-5F4F-5AAA-8595-751E14777492"><p>Camera - for capturing

still and video images using <xref href="GUID-36C3A2FD-F4F9-5B8C-91B7-40C29B3D2224.dita">Camera

Framework</xref>. </p> </li>

<li><p>Mobile TV receiver - for playing

or recording DVB-H mobile TV broadcasts using <xref href="GUID-893BFF74-5DBB-5606-96FC-F961A52CA90D.dita">Mobile

TV DVBH Receiver HAI Component</xref>.</p></li>

<li><p>Multimedia Device Framework (MDF)

- for loading, controlling, connecting and unloading audio, video and imaging

components using the <xref href="GUID-E5900ED5-C49E-52B2-AE6D-CC0DB1F234A1.dita">OpenMAX

IL Collection</xref>.</p></li>

<li id="GUID-081710DF-6E7E-5CA0-B043-DE1D66FB21C7"><p>Speech recognition -

for making requests from the MMF (Multimedia Framework) to the DevASR (DevSound

Automatic Speech Recognition), which are transported using the <xref href="GUID-3CA473CB-E79C-5B32-8B5B-F222B3DDEF3B.dita">Speech

Recognition Controller </xref> component. </p> </li>

<li><p>Hardware abstraction layer - for video playing and recording using

the <xref href="GUID-842D8124-554F-5D89-9E20-8B48EA539D2F.dita">Video HAI Component</xref></p></li>

</ul> <p><b>Manipulating images</b> </p> <p>Many of the most common image

manipulation techniques are provided: </p> <ul>

<li id="GUID-C1AC52E7-2A88-51F0-8485-A1FBFAA64320"><p>Image encoding and decoding

is provided using <xref href="GUID-3D9C4B45-EEA0-581C-A9E5-8B2535014930.dita">Image

Conversion</xref>. </p> </li>

<li id="GUID-8EE315BD-90E3-521D-BDEB-4FB3EA64069A"><p>Reading and editing

image metadata using the <xref href="GUID-FCEE832C-5D8D-5177-A86A-E10015EF77DC.dita">Exchangeable

image file format</xref> (Exif). </p> </li>

<li id="GUID-98F15E8A-59F8-5441-9FB5-58B2B5B378B7"><p>Image transformations

such as rotations, masking, mirroring flipping, stretching, resizing, and

many other common image transformation techniques are provided using <xref href="GUID-C0B39D73-0A3C-5289-A774-7BE590037404.dita">Bitmap Transformation</xref> and <xref href="GUID-6914EA3D-6FAB-52DD-A159-990F4ED892A2.dita">Image Transformation</xref>. </p> </li>

<li id="GUID-ED0B62DA-B6CC-582E-BEE5-0645E735DBEC"><p>Processing an image

on a mobile device is provided using <xref href="GUID-0EBD074D-49E9-5E3E-9FA9-3484E968ABDB.dita">Image

Processor Library</xref>. </p> </li>

</ul> </section>

<section><title>Technologies</title> <p>The following is a list of technologies

used by Multimedia to enable various features: </p> <ul>

<li><p><b>DVB-H</b>- to receive Mobile

TV signals. </p></li>

<li id="GUID-93528CEA-86C0-54FD-9021-F1A279BD3C77"><p> <b>Exif</b> - to include

metadata for an image, such as, a time/date stamp, a description, GPS location

data, an embedded thumbnail. </p> </li>

<li id="GUID-30C128FF-EBBA-5811-9817-472A82893920"><p> <b>Codecs</b> - to

deal with (playing, recording, streaming) audio and video data in one of the

many supported formats through the Symbian. </p> </li>

</ul> </section>

<section><title>Documentation and examples</title><p>The following sections

list tutorials and example applications that can be used to play and record

audio and video data, perform image processing and manipulation, and access

any camera and radio tuner hardware present on a mobile phone. </p><p><b>Tutorials</b></p><ul>

<li><p><xref href="GUID-03D132BE-5B90-50E1-88D3-D66289C02444.dita">Audio Client

Tutorials</xref></p></li>

<li><p><xref href="GUID-C2BF3044-CC37-554D-9496-C7B18AE94561.dita">Audio Input

Stream Tutorials</xref></p></li>

<li><p><xref href="GUID-4D94A4B8-392D-5657-BD71-F1EA54318C47.dita">Audio Output

Stream Tutorials</xref></p></li>

<li><p><xref href="GUID-F370A917-6963-58F6-8876-160A1DC42040.dita">Video Client

Library Tutorials</xref></p></li>

<li><p><xref href="GUID-354240A8-2DDD-5181-9A36-9A054D239B62.dita">Video Subtitle

CRP Tutorial</xref></p></li>

<li><p><xref href="GUID-55A1A47A-A7DD-5B1A-88E1-4818CB65B782.dita">Camera Library

Tutorials</xref></p></li>

<li><p><xref href="GUID-B4783C5D-2653-5B92-AD0D-374A7AAA8EA4.dita">DVBH

Reciever Library Tutorials</xref></p></li>

<li><p><xref href="GUID-786A8188-AB4D-5C65-8BEF-50E45FDBE9A5.dita">Image Conversion

Library Tutorials</xref></p></li>

<li><p><xref href="GUID-26FD66B4-A291-5DAD-991D-40AB5316F30C.dita">Initializing

and Processing an Image Tutorial</xref></p></li>

</ul><p><b>Example applications</b></p><ul>

<li><p><xref href="GUID-288C200C-760D-52A2-8FC7-E179E5FB1A2A.dita">Multimedia Example

Code</xref></p></li>

</ul></section>