Re: MIDISysexSendRequest appropriate for MIDI SDS?
Re: MIDISysexSendRequest appropriate for MIDI SDS?
- Subject: Re: MIDISysexSendRequest appropriate for MIDI SDS?
- From: Kurt Revis <email@hidden>
- Date: Sun, 15 Feb 2009 09:02:52 -0800
On Feb 15, 2009, at 7:21 AM, Fredrik wrote:
On Feb 14, 2009, at 8:09 PM, Fredrik wrote:
I have started to experiment with MIDI sample dump and would
like to know if MIDISysexSendRequest will work
since the SDS header seems to be specific for that purpose.
SDS messages are just sysex, so yes, you can use MIDISendSysex()
if you like.
Ok I see, I was thinking of the SDS header, which is in it self a
request to begin SDS transmission AFAIK.
You're talking about the "Dump Header" command, described here?
http://kilsti.com/midi_synth/docs/sds_2.txt
Format: Dump Header
F0 7E cc 01 ss ss ee ff ff ff gg gg gg hh hh hh ii ii ii jj F7
That starts with F0 and ends with F7, so it's still just a sysex
message.
Yes it is, but it´s also a request to start sending SDS data, I just
wasn´t sure what MIDISysexSendRequest would do in the background.
The SendRequest part of it´s name implies that it would perhaps add
something to the data that you supply.
Ah, I see what you were thinking.
No, it doesn't add anything extra to your data. (CoreMIDI doesn't
know anything about SDS, and in general sysex can differ wildly
depending on the device, so I can't imagine how it would know what to
add.)
The MIDISysexSendRequest is just a structure that's used to keep track
of *your app's* request to CoreMIDI to send sysex data.
--
Kurt Revis
email@hidden
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