Archived:How to create a playlist for the music player using Symbian C++

Comments

This article help people that want to know how one can create a m3u playlist for the default music player. The source code lacks a bit more comments, but is simple and easy to undertand.

--ramiroluz

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Archived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

Article Metadata

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Tested with

Devices(s): Nokia E71, N95, N96

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Compatibility

Platform(s): S60 3rd Edition FP1, S60 3rd Edition FP2

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Article

Keywords: Playlist, Music player, M3U

Created: User:Kbwiki (08 Sep 2009)

Last edited: hamishwillee (14 Jun 2012)

Overview

This article provides the way to create a playlist for the standard S60 music player.

Description

The standard S60 mMusic player supports playlists in the M3U format (Moving Picture Experts Group Audio Layer 3 Uniform Resource Locator). So, to create playlist programmatically, we need to write an M3U file with the file names of each track in the playlist. File paths can be either absolute or relative to the M3U file.

Solution

The sample M3U file:

#EXTM3U
Audio1.mp3
Audio2.mp3
Audio3.mp3
Audio4.mp3

Create a file with the extension .m3u and write the song names and paths using RFile::Write(). We need to write into the m3u file in UTF8 format (use CnvUtfConverter::ConvertFromUnicodeToUtf8()).

 //Creating a pre-defined playlist
 RFile file;
 TInt nRetVal;
 TInt err;
 RFs fs;
 TBuf<500> string;
 //Header
 string.Copy(_L("#EXTM3U\n"));
 //Songs relative paths
 string.Append(_L("song1.mp3\n"));
 string.Append(_L("song2.mp3\n"));
 string.Append(_L("song3.mp3"));
 User::LeaveIfError(fs.Connect());
 CleanupClosePushL(fs);
 _LIT(KLogFile,"c:\\data\\MyPlayList.m3u");
 err = file.Create(fs, KLogFile, EFileWrite);
 if( err == KErrAlreadyExists)
 file.Open(fs, KLogFile, EFileWrite);
 TPtrC8 representation((TUint8*)(&string)->Ptr(), (&string)->Size());
 TInt pos;
 nRetVal = file.Size(pos);
 TBuf8<500> stringutf;
 CnvUtfConverter::ConvertFromUnicodeToUtf8(stringutf, string);
 nRetVal = file.Write(stringutf);
 nRetVal = file.Flush();
 file.Close();
 CleanupStack::PopAndDestroy();

Note

The music player needs to be refreshed in order to show the playlist in the music player's playlist library.

Related article

M3U wiki page[1]