[L2Ork-dev] Purr Data and MP3 Objects

[Linux ROUEN Normandie]

Thanks Jonathan,
But that means it's not usable by a standard project user. You have to 
put your hands under the hood and then into the dirty engine.
I just checked [mp3play~] with 'iemlib' r.1.17 properly installed and 
declared under Pd Vanilla v.0.50.2 and it's the same bad behavior than 
under Purr Data v.2.13.0. Even more, here 'mp3play~-help.pd' is not 
present at all.
-Joseph
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Le 16/09/2020 à 21:13, Jonathan Wilkes a écrit :
> On Wed, Sep 16, 2020 at 2:37 PM Linux ROUEN Normandie
> <linux.rouen at free.fr> wrote:
>> Hello Folks,
>>
>> I'm looking for some advises regarding Recording and Playing MP3 files -directly- inside Purr Data v2.13.0+ under GNU/Linux and Windows.
>>
>> In my MIDI/Audio projects under Purr Data I'm already using successfully:
>> - [oggwrite~] / [oggread~] for .ogg (Vorbis) files (with lossy audio compression), and
>> - [writesf~] / [readsf~] for  .wav, .aif, .au and .snd files (with uncompressed linear pulse-code modulation).
>>
>> But some users are requesting, among other demands, the possibility to handle also MP3 (with lossy data-compression) for extending the number of compatible Audio equipment (like TVs) able to read them.
>>
>> After analysis I found only 2 objects -not tested yet- from the 'unauthorized' library being able to deal with MP3:
>> - [mp3write~] an MP3 file recorder v.0.4, and
>> - [mp3cast~] an MP3 streamer v.0.5.
>> But there is nothing about an MP3 file reader/player.
>>
>> Despite the many libraries installed by default, Purr Data could not create any of the following objects (see towards the end of the link - FR):
>> - [mp3amp~],
>> - [graphic-mp3amp~],
>> - [mp3live~],
>> - [mp3streamout~],
>> - [mp3streamin~],
>> - [mp3fileout~], and
>> - [mp3play~] from 'iemlib library'.
>>
>> * [mp3play~] should be in the 'iemlib' library but it's not there when its help file is well present in '/opt/purr-data/lib/pd-l2ork/extra/iemlib/mp3play~-help.pd'.
>> One strange thing is that the 'mp3play~.c' file is well present on the Git copy I made from Jonathan's repo for my French translations in:
>> - '/home/joe/GitLab/purr-data/externals/build/src/mp3play~.c' (47 bytes), and
>> - '/home/joe/GitLab/purr-data/externals/iemlib/iem_mp3/src/' (107 kB).
> mp3play~ is not currently getting built (and wasn't in Pd-extended, either).
>
> What a weirdo class structure! After compiling it, you must first create this:
>
> [iem_mp3]
>
> Which will then go in and trigger the setup routine for mp3play~, so
> that you can then do this:
>
> [mp3play~]
>
> Both will create properly. I was able to play the test file and it
> seemed to output something, though couldn't get my headphones to work
> so I don't know if it sounded right.
>
> It appears there are no dependencies for this object, so if we add it
> then it will work in the web app, too!
>
> I guess the first thing to do is look in Pd Vanilla and see if anyone
> has done work on this object since 2003.
>
> -Jonathan
>
>> Any ideas - suggestions about an available and working [MP3 file reader/player] object?
>> Thank you.
>> - - - - - - - - - - - - - - - - - - - -
>> Best,
>> Joseph Gastelais
>> LINUX ♥ ROUEN ♥ Normandie
>> - - - - - - - - - - - - - - - - - - - -
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