Since I have no USB MIDI devices other than a basic USB/MIDI converter, I can't find the answers to the following questions experimentally, but I'd like to know how the USB MIDI driver in ALSA deals with certain features that I might like to put into a USB MIDI device of my own. Perhaps someone here already knows the answers to these questions, so I don't have to spend a lot of time decoding the source: 1) If a USB MIDI device has two or more MIDIStreaming interfaces, are these represented as separate /dev/snd/midi* devices? 2) If a MIDIStreaming interface has two or more in/out endpoint pairs referring to embedded MIDI OUT/IN jacks, are these represented as separate devices? 3) If a USB MIDI device sends MIDI messages to the host using virtual cable numbers other than zero, how are these bytes differentiated in the data read from /dev/snd/midi*? Or are they simply discarded? -- Ciao, Paul D. DeRocco Paul mailto:pderocco@xxxxxxxxxxxxx ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
