Playing MIDI through Silverlight

09-08-2007 12:06 AM |

More specifically, would it be possible to create a MIDI file in memory and then load it into some media playing object that silverlight might have? I'm not looking to communicate with MIDI devices, just play MIDI files... 

Re: Playing MIDI through Silverlight

09-08-2007 8:56 AM |

Hello generalgoodtimes,

Silverlight does not support the MIDI format.  However, you could create a MIDI file in memory and then encode it into the .mp3 file format using a workflow that uses a command line application.  You could then play the MP3 file within a MediaElement.

If this answers your question, please select "mark as answer", otherwise, please post a follow up question.

Thank you,

Chad Campbell

Re: Playing MIDI through Silverlight

09-08-2007 10:50 AM |

Hi Chad,

Thank you for your reply. While that is good news, its only slightly what I'm looking for. Let me ask you this - do you suppose it would be possible to both create the MIDI file in memory and then encode it into an MP3 file within the same Silverlight application? I see no reason why that would not be possible - but then here's the big question - can MediaElement play a file that was created in memory? I spent a good deal of time investigating this on MSDN last night, and I don't think it can - but maybe I'm missing something... Any help or other ideas would be greatly appreciated.

Thank you,

Rob

 

Re: Playing MIDI through Silverlight

09-08-2007 12:14 PM |

You could encode the .midi file as an MP3 file, then use the SetSource method and an downloader object. 

Re: Playing MIDI through Silverlight

09-08-2007 2:25 PM |

Hi Chad,

That is what I was thinking, but I'm trying to do this without saving the MP3 file to disk, whether locally or remotely. I want to do this all in memory - and my understanding is I can't give a byte buffer to Downloader.SetSource - did I just miss something in the documentation that would allow this, or is there another way to go about that?

Thanks,

Rob

Re: Playing MIDI through Silverlight

11-10-2008 5:14 PM |

Hi, 

I find it very interesting, but ...

" using a workflow that uses a command line application. "

could u explain, these phrase, with a little more of detail?, thank you very much

Re: Playing MIDI through Silverlight

11-10-2008 9:19 PM |

Why not just add the Windows Media Player to your html page it plays midi files:-

<object id="Player" classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6" style="position:absolute;top:10px;width:64px;height:54px;" >
<param name="autoStart" value="false"/>
<param name="UImode" value="none"/>
<param name="stretchtofit" value="true"/>
<param name="volume" value="100"/>
<param name="Url" value="12popcorn.mid"/>
<param name="windowlessVideo" value="true"/>
</object>

 Accessing it is easy:-

HtmlPage.Window.Eval("parent.document.getElementById('Player').controls.play()");

Regards

Marc.

Re: Playing MIDI through Silverlight

11-15-2008 2:53 AM |

It seems to me like you should be able to create the MIDI content, encode it in memory into an Mp3 (or WMA) where the contents are written to a MemoryStream and then use MediaElement.SetSource to set the source to the MemoryStream containing the freshly encoded Mp3 content. The only place I can think of here where you might run into trouble is if you continued adding to the MemoryStream after you had already passed it to the MediaElement for playback.

Re: Re: Playing MIDI through Silverlight

11-03-2009 4:51 PM |

I just looked at this thread and I'm feeling a bit like a martian discovering strange human behavior :-) It seems obvious for everyone here "to encode a Midi file into a MP3".

Well.. I'm not bad at C#, I'm also a composer using a lot of midi devices and digital things...So I know a little bit about all this stuff, and I can say one thing : it is not obvious to "encode" a Midi into a MP3 !

Midi file does not carry any sound, just some data about what notes are played, when and how long (plus some other info).

The only way to "encode a midi file into a MP3" is to create a synthesizer that will play the score, get the resulting Wav and then, ok, encode the latter into MP3. Two things that are far to be obvious !

But it seems to be simple for everyone in this thread so, I'll just add : Good luck guys ! :-)

(and do not forget to publish your source code, just the little tricky part that can "encore a midi into a mp3", I'd love to get it :-) )