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|ID||Category||Severity||Reproducibility||Date Submitted||Last Update|
|0007775||[Squeak] OS-Linux||major||always||06-25-13 18:05||10-20-17 22:21|
|Summary||0007775: unix midiplugin cannot play standard instruments via ALSA midi connection|
The MIDI plugin is expected to be able to play sounds using the standard MIDI instrument list; on unix with ALSA sound drivers (i.e. on the Raspberry Pi in this case) this seems not to work. Apparently this has been a problem for some time since the Scratch code using it has been commented out since 2009.
The result is that a lot of sounds are very sub-par for the users of Scratch on any unix platform and of course the Pi. This is a pity, since it gives a very poor impression.
|Additional Information||After gazing at the unix midi code I had to conclude that it didn't look like it could work at all, but what do I know? At the simplest level, querying the number of ports seems to give an answer that classes with related functions that get passed a port number. Compare, for example, sqMIDIGetPortCount and sqMIDIGetPortDirectionality|
|Attached Files||sqUnixMIDIALSA.inc [^] (18,532 bytes) 06-25-13 18:05|
(0014602 - 88 - 88 - 260 - 260 - 260 - 260)
|More info about ALSA here: https://www.everipedia.com/Advanced_Linux_Sound_Architecture/ [^]|
(0014604 - 48 - 60 - 154 - 154 - 154 - 154)
awesome, thanks travm1
(0014605 - 532 - 562 - 562 - 562 - 562 - 562)
Oh my, I'd forgotten about this; long time ago.
The problem was actually 'fixed' a couple of years ago by someone (and I can't find any trace of the name, but Yoshiki might recall since it is one of the Japanese squeakers) who wrote a shell scfript to install Timidity and soundfonts.
It works, but Timidity seems to have a resource leak since it gradually takes more and more cpu%. There are timing issues as well, with the HDMI sound being particularly strange.
The script on the Pi is /usr/share/scratch/timidityinstall.sh
|06-25-13 18:05||tim||New Issue|
|06-25-13 18:05||tim||File Added: sqUnixMIDIALSA.inc|
|06-25-13 18:06||tim||Issue Monitored: tim|
|04-07-17 05:53||travm1||Note Added: 0014602|
|10-20-17 18:29||thalamus||Note Added: 0014604|
|10-20-17 22:21||tim||Note Added: 0014605|
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