Hi breno, thank you for the quick response. It helped. I had a look into mixer_samples.t and line 106 states, that quick_load_WAV is not (yet? Who do I have to bribe with what to get it?) implemented.
Here is a working piece of code using temporary files. Of course, you need a database containing audio files. Best regards, Alex [code] #!perl use strict; use warnings; use utf8; use DBI; use SQL::Abstract::Limit; use File::Temp; use SDL; use SDL::Audio; use SDL::Mixer; use SDL::Mixer::Samples; use SDL::Mixer::Channels; use SDL::Mixer::Music; SDL::init(SDL_INIT_AUDIO); SDL::Mixer::init( MIX_INIT_MP3 | MUS_MP3 ); unless( SDL::Mixer::open_audio( 44100, AUDIO_S16SYS, 2, 4096 ) == 0 ) { Carp::croak "Cannot open audio: ".SDL::get_error(); } my $buffer = get_audio_buffer(); # -- write audio buffer to temp file my $fh = File::Temp->new( UNLINK => 1, SUFFIX => '.mp3' ); $fh->unlink_on_destroy( 1 ); print $fh $buffer; my $fname = $fh->filename; # close the handle or the temfile will have some sort of lock on it and cannot be read $fh->close(); my $background_music = SDL::Mixer::Music::load_MUS( $fname ); unless( $background_music ) { Carp::croak "Cannot load music file [buffer from DB]: " . SDL::get_error(); } SDL::Mixer::Music::play_music( $background_music,0 ); sleep(6); SDL::Mixer::Music::halt_music(); SDL::Mixer::close_audio; exit(0); sub get_audio_buffer { my $sql = SQL::Abstract::Limit->new( limit_dialect => 'LimitXY' );; my $table = 'audio_files'; my @fields = (qw/audio/); my %where = ( id => 2, ); my @order = (); my $limit = 1; my $offset = 0; my ( $stmt, @bind ) = $sql->select( $table, \@fields, \%where, \@order, $limit, $offset ); my $database = 'database_name'; my $db_host = 'your_host'; my $db_port = '3306'; my $dsn = "DBI:mysql:database=$database;host=$db_host;port=$db_port"; my $username = 'username'; my $password = 'password'; my $dbh = DBI->connect($dsn, $username, $password) or die('Cannot connect to DB: ' . DBI->errstr()); my $sth = $dbh->prepare( $stmt ); $sth->execute( @bind ); my ($buffer) = $sth->fetchrow_array(); return $buffer; } # /get_audio_buffer [/code] -----Ursprüngliche Nachricht----- Von: breno [mailto:oainikus...@gmail.com] Gesendet: Dienstag, 29. November 2011 06:34 An: Alexander Becker Cc: sdl-devel@perl.org Betreff: Re: How to play an mp3 file from a database On Mon, Nov 28, 2011 at 8:13 PM, Alexander Becker < > wrote: > Dear all! > Hi there! > I just tried the example code of the SDL Manual where you play some music. > By the SDL manual, I refer to the one that is hidden at the bottom of > the sdl.perl.org page, so that you really have to search for it in > order to find it - and even then you have to get along with an ugly github interface. > There's a new project website under way, but we're missing people to work in it. Please join #sdl in irc.perl.org if you want to help us get it right :) > So, in general: Is there a way to play mp3 files? Yup. If your libsdl was compiled with mp3 support, all you have to do (iirc) is set the MIX_INIT_MP3 (for effects) and MUS_MP3 (for audio) flags when you call SDL::Mixer::init(): SDL::Mixer::init( MIX_INIT_MP3 | MUS_MP3 ); then use load_MUS() and play_music() from SDL::Mixer::Music to play mp3 files as background music, or load_WAV() from SDL::Mixer::Samples to play mp3 effects (yes, the function is named load_WAV() but plays different formats too if they're available). The documentation in SDL::Mixer, SDL::Mixer::Music and SDL::Mixer::Samples should be helpful, as some of the test files (t/mixer_music.t comes to mind). > And in particular: is there a way to play mp3 files that are in a variable? > Or do I have to work with temporary files? > Not sure. I *think* SDL::Mixer::quick_load_WAV( $buffer ) might do the right thing. You'll have to test it though. Cheers, breno ----- eMail ist virenfrei. Von AVG überprüft - www.avg.de Version: 10.0.1411 / Virendatenbank: 2092/4046 - Ausgabedatum: 29.11.2011