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Wiki > Main > SummerOfCode > SummerOfCode2009 > PureDataOnRockbox

---+!! %MAKETEXT{"Pure Data on Rockbox"}%

This project is part of the [[SummerOfCode2009][Google Summer of Code 2009 project]].

| *Project name* | *Student* | *Mentor* | *Backup mentor* |
| Make Rockbox a musical instrument | [[WincentBalin][Wincent Balin (wincent)]] | [[PeterDHoye][Peter D'Hoye (petur)]] | [[DominikWenger][Dominik Wenger (domonoky)]] |

This is a Google Summer of Code 2009 project with the goal to make Rockbox a musical instrument. To do so, the sound processing framework Pure Data will be integrated into Rockbox in the likeness of http://www.ipodlinux.org/wiki/PdPod .

Those who do not know what Pure Data is are advised to look at the book "Designing Sound" (http://aspress.co.uk/ds/), both at the abridged text and at the sample chapters. Another good Pure Data tutorial can be found at http://www.pd-tutorial.com/ .

To test the abilities of PDBox get the file [[%ATTACHURL%/PureData.zip][PureData.zip]] from http://www.ipodlinux.org/wiki/PdPod . If http://www.ipodlinux.org/ does not work, you might want to get this file from this page (seel below).

There is a repository with updated designs at <a href="http://pd-anywhere.svn.sourceforge.net/viewvc/pd-anywhere/branches/reware-exhibition/ipod/PureData/" title="http://pd-anywhere.svn.sourceforge.net/viewvc/pd-anywhere/branches/reware-exhibition/ipod/PureData/">http://pd-anywhere.svn.sourceforge.net/viewvc/pd-anywhere/branches/reware-exhibition/ipod/PureData/</a> . Beware of designs _Daft_Widget.pd_ and _dj_scratch.pd_ ; they contain errors which make pdbox hang! Alternatively you might use the archive [[%ATTACHURL%/PureData2.zip][PureData2.zip]], attached below.

---++ %MAKETEXT{"Project Plan"}%

*Part 1 (50%): Port PDa (Pure Data anywhere, the Pure Data fixed point fork) to Rockbox*
   * Port network communication: done (actually, it was replaced by a small custom message passing interface)
   * Port memory allocator: done (using dbestfit library)
   * Porting file-for-file, looking at missing symbols in the plug-in: done
   * Port audio: done (output only)
   * Port file operations: done
   * Port scheduler: done
*Part 2 (50%): Port PDPod GUI to Rockbox* 
   * Sending statements to Pure Data core (pauses and un-pauses were used as an example): done
   * Custom GUI: done
   * Standard GUI: done
*Known problems* 
   * <strike>GUI does not take backdrops (bitmap backgrounds) into account, leading to an unreadable text/background combination -- PeterDHoye - 04 Aug 2009</strike> - fixed
   * <span style="text-decoration: line-through;">PD designs which are based on audio files instead of (for lack of a better term) oscillators may have difficulties while loading</span> - fixed
   * Sound input capability is lacking
<span style="color: darkgray;"> </span> <span style="color: slategray;">
---++ %MAKETEXT{"Preliminary information"}%

   * SourceForge.net project for Pure Data Anywhere: http://sourceforge.net/projects/pd-anywhere/
   * Data transfer from the core to the output, networking code etc. is of special interest
   * Tried to compile Pure Data Anywhere in Rockbox. Some files failed. File handling and networking mostly.
   * Designing around memory allocator (looking if it is needed at all)
   * Designed rudimentary event queue based networking code. While integrating the code it became evident that a memory allocator is needed. Therefore: Integrating dbestfit memory allocator
   * Made an initial patch: [[http://www.rockbox.org/tracker/task/10214][FS#10214]]
   * dbestfit seem to work with simple test. Of course, the most thorough test will be the plug-in itself
   * Changed the patch to [[http://www.rockbox.org/tracker/task/10244][FS#10244]]
   * Changed the patch to [[http://www.rockbox.org/tracker/task/10416][FS#10416]]
   * [[%ATTACHURL%/PureData.zip][PureData.zip]]: Archive of files for Pure Data with pdPod GUI
   * [[%ATTACHURL%/PureData2.zip][PureData2.zip]]: Archive of Pure Data patches from http://pd-anywhere.svn.sourceforge.net/viewvc/pd-anywhere/branches/reware-exhibition/ipod/PureData/ (without dangerous patches)
</span>

I	Attachment	Action	Size	Date	Who	Comment
zip	PureData.zip	manage	1788.6 K	12 Jul 2009 - 19:52	WincentBalin	Archive of files for Pure Data with pdPod GUI
zip	PureData2.zip	manage	5768.1 K	03 Jun 2010 - 00:51	WincentBalin	Archive of Pure Data patches from http://pd-anywhere.svn.sourceforge.net/viewvc/pd-anywhere/branches/reware-exhibition/ipod/PureData/ (without dangerous patches)

r31 - 03 Jun 2010 - 00:57:51 - WincentBalin

Parents: SummerOfCode > SummerOfCode2009