Revision as of 04:58, 4 July 2012

Overview

S60 has several audio enhancement APIs that can be used to modify the audio experience. One of them is the CAudioEqualizerUtility 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 AudioEqualizerUtility.lib

Header audioequalizerutility.h

Source file

First you need to construct the equalizer instance:

 iAudioEqualizerUtility =
   CAudioEqualizerUtility::NewL(*iMdaAudioPlayerUtility);

Use the following code to query equalizer presets:

 TArray<TEfAudioEqualizerUtilityPreset> allPresets = 
   iAudioEqualizerUtility->Presets();

Use the following code to apply an equalizer preset:

 iAudioEqualizerUtility->ApplyPresetL(preSetIndex);
 // where preSetIndex is 0 to (iAudioEqualizerUtility->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 reverb to the Symbian C++ audio player