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Adding reverb to the Symbian C++ audio player

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Article Metadata
Code ExampleTested with
Devices(s): Nokia N95
Compatibility
Platform(s): S60 3rd Edition
Article
Keywords: CEnvironmentalReverbUtility, TEfEnvironmentalReverbUtilityPreset
Created: User:Technical writer 1 (09 Oct 2008)
Last edited: hamishwillee (14 Jun 2013)

Contents

Overview

The S60 platform has several audio enhancement APIs that can be used to modify the audio experience. One of them is the CEnvironmentalReverbUtility API.

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 EnvironmentalReverbUtility.lib

HEADER environmentalreverbutility.h


Source file

First you need to construct the reverb utility instance:

 iEnvironmentalReverbUtility =
CEnvironmentalReverbUtility::NewL(*iMdaAudioPlayerUtility);

You can use the following code to query reverb presets:

 TArray<TEfEnvironmentalReverbUtilityPreset> allPresets =
iEnvironmentalReverbUtility->Presets();

To enable an environmental reverb with a desired preset, simply use an index value for the preset list:

 iEnvironmentalReverbUtility->ApplyPresetL(preSetIndex);
// where preSetIndex is
// 0 .. (iEnvironmentalReverbUtility->Presets().Count() – 1)


Test application

File:PlayerExtrasExample.zip


See also

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

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

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 equalizer to the Symbian C++ audio player

This page was last modified on 14 June 2013, at 07:52.
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