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Adding source location effects to the Symbian C++ audio player

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__NOTOC__
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{{ArticleMetaData <!-- v1.2 -->
__NOEDITSECTION__
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|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) -->
{{KBCS}}
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|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
{{CodeSnippet
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|devices= Nokia N95
|id=CS001131
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|sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) -->
|platform=S60 3rd Edition
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|platform= S60 3rd Edition
|devices=Nokia N95
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|devicecompatability= <!-- Compatible devices (e.g.: All* (must have GPS) ) -->
|category=Symbian C++
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|dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
|subcategory=Audio
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|signing= <!-- Empty or one of Self-Signed, DevCert, Manufacturer -->
|creationdate=October 9, 2008
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|capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. -->
|keywords=CSourceLocation  
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|keywords= CSourceLocation
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|language= <!-- Language category code for non-English topics - e.g. Lang-Chinese -->
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|translated-by= <!-- [[User:XXXX]] -->
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|translated-from-title= <!-- Title only -->
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|translated-from-id= <!-- Id of translated revision -->
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|review-by= <!-- After re-review: [[User:username]] -->
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|review-timestamp= <!-- After re-review: YYYYMMDD -->
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|update-by= <!-- After significant update: [[User:username]]-->
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|update-timestamp= <!-- After significant update: YYYYMMDD -->
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|creationdate= 20081009
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|author= [[User:Technical writer 1]]
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<!-- The following are not in current metadata -->
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|subcategory= Audio
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|id= CS001131
 
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CAPABILITY NONE
 
CAPABILITY NONE
  
LIBRARY   SourceLocationEffect.lib   
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LIBRARY SourceLocationEffect.lib   
  
HEADER SourceLocationBase.h
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HEADER SourceLocationBase.h
  
  
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==See also==
 
==See also==
  
[[CS001130 - Adding doppler effects to the audio player]]  
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[[Adding doppler effects to the audio player in Symbian C++]]  
  
[[CS001132 - Adding listener's location effects to the audio player]]  
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[[Adding listener's location effects to the Symbian C++ audio player]]  
  
[[CS001133 - Adding bass boost to the audio player]]  
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[[Adding bass boost to the Symbian C++ audio player]]  
  
[[CS001134 - Adding stereo widening to the audio player]]
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[[Adding stereo widening to the Symbian C++ audio player]]
  
[[CS001135 - Adding reverb to the audio player]]
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[[Adding reverb to the Symbian C++ audio player]]
 +
 
 +
[[Adding equalizer to the Symbian C++ audio player]]
  
[[CS001136 - Adding equalizer to the audio player]]
 
  
[[Category:For publishing]]
 
 
[[Category:Symbian C++]]
 
[[Category:Symbian C++]]
[[Category:Code Examples]]
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[[Category:Code Snippet]]
 
[[Category:Multimedia]]
 
[[Category:Multimedia]]
 
[[Category:Audio]]
 
[[Category:Audio]]
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[[Category:Code Snippet]]

Revision as of 05:13, 4 July 2012

Article Metadata
Tested with
Devices(s): Nokia N95
Compatibility
Platform(s): S60 3rd Edition
Article
Keywords: CSourceLocation
Created: User:Technical writer 1 (09 Oct 2008)
Last edited: hamishwillee (04 Jul 2012)

Contents

Overview

The S60 platform has several audio enhancement APIs that can be used to modify the audio experience. One of them is the CSourceLocation API. This API makes the audio source's location for the listener appear to change.

This snippet can be self-signed.

Preconditions

The audio player must be fully constructed before constructing the instance of the API. This can be done with the following lines of code:

 iMdaAudioPlayerUtility =
CMdaAudioPlayerUtility::NewFilePlayerL(aFileName,
*this,
EMdaPriorityNormal,
EMdaPriorityPreferenceTimeAndQuality);

MMP file

The following capabilities and libraries are required:

CAPABILITY NONE

LIBRARY SourceLocationEffect.lib

HEADER SourceLocationBase.h


Source file

First you need to construct the reverb utility instance:

 iSource = CSourceLocation::NewL( *iMdaAudioPlayerUtility );

To set the source location effect on, you need to set the X,Y, and Z coordinates for the source, and then enable and apply the effect to the player.

  iSource->SetLocationCartesianL(iSourcePositionX,
iSourcePositionY,
iSourcePositionZ);
 
if(!iSource->IsEnabled())
iSource->EnableL();
 
iSource->ApplyL();

You can also and a 3D effect by using a timer that periodically changes the coordinates of the effect.

To set the source location effect off, call the following line of code:

 iSource->DisableL();


Test application

AudioEfects.zip


See also

Adding doppler effects to the audio player in Symbian C++

Adding listener's location effects to the Symbian C++ audio player

Adding bass boost to the Symbian C++ audio player

Adding stereo widening to the Symbian C++ audio player

Adding reverb to the Symbian C++ audio player

Adding equalizer to the Symbian C++ audio player

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