[Bug 21589] New: MacOS error from MIDI SetVolume
wine-bugs at winehq.org
wine-bugs at winehq.org
Wed Feb 3 11:22:07 CST 2010
http://bugs.winehq.org/show_bug.cgi?id=21589
Summary: MacOS error from MIDI SetVolume
Product: Wine
Version: 1.1.36
Platform: x86
OS/Version: Mac OS X 10.5
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: winmm&mci
AssignedTo: wine-bugs at winehq.org
ReportedBy: hoehle at users.sourceforge.net
Created an attachment (id=26043)
--> (http://bugs.winehq.org/attachment.cgi?id=26043)
console output during tests
Hi,
The midi tests now in git that will appear with wine-1.1.38 produce a strange
error on MacOS:
err:wave:AudioUnit_GetVolume
AudioUnitGetParameter return an error "\xff\xff\xd5\x8e"
Same error for SetVolume
a) Is dbg_fourcc() really the appropriate method for reporting error codes
there? It rather looks like a small negative number:
-10866 aka. kAudioUnitErr_InvalidScope
b) The same function succeeds when called from waveGetVolume in tests/wave.c on
a wave handle instead of a MIDI one.
Perhaps the MacOS MIDI SW-synth does not support volume settings after all?
Perhaps a more elaborate filter graph would be needed to support variable
volumes? One would then question whether MIDICAPS_VOLUME need be reported at
all in such a case and possibly drop support for Get/SetVolume in midi.c -- or
implement said filter graph.
This is just supposition. I'm not familiar with MacOS programming.
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