Some soundcards cause crashes on certian platforms. One example is bug 1406981. The MOTU 828mk3 cause crashes when calling GetAudioChannelLayout on OSX. We should maintain a blacklist for some problematic soundcards for better stability

(In reply to Chun-Min Chang[:chunmin] from comment #0) > Some soundcards cause crashes on certian platforms. One example is bug > 1406981. The MOTU 828mk3 cause crashes when calling GetAudioChannelLayout on > OSX. We should maintain a blacklist for some problematic soundcards for > better stability For this case, we could put the `group Id`[0] of this soundcard in the blacklist. [0] http://searchfox.org/mozilla-central/rev/40b456626e2d0409b7034768b4d9526fc7235ea4/dom/media/nsIAudioDeviceInfo.idl#13

(In reply to Chun-Min Chang[:chunmin] from comment #1) > (In reply to Chun-Min Chang[:chunmin] from comment #0) > > Some soundcards cause crashes on certian platforms. One example is bug > > 1406981. The MOTU 828mk3 cause crashes when calling GetAudioChannelLayout on > > OSX. We should maintain a blacklist for some problematic soundcards for > > better stability > For this case, we could put the `group Id`[0] of this soundcard in the > blacklist. > > [0] > http://searchfox.org/mozilla-central/rev/ > 40b456626e2d0409b7034768b4d9526fc7235ea4/dom/media/nsIAudioDeviceInfo.idl#13 I was wrong. The `group_id`/`device_id` isn't identical between the machines. The `group_id`/`device_id` is accessed from `kAudioDevicePropertyDeviceUID`[0], while `kAudioDevicePropertyDeviceUID` is only identical to one machine. It may be different from one machine to another machine[1]. Thus, we should use `kAudioDevicePropertyModelUID` instead of `kAudioDevicePropertyDeviceUID`[2] since `kAudioDevicePropertyModelUID` is same no matter what machine is. It means that we need to add an attribute to store this and show it on about:support. [0] http://searchfox.org/mozilla-central/rev/1285ae3e810e2dbf2652c49ee539e3199fcfe820/media/libcubeb/src/cubeb_audiounit.cpp#3059 [1] https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10.9.sdk/System/Library/Frameworks/CoreAudio.framework/Versions/A/Headers/AudioHardwareBase.h#L594-L600 [2] https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10.9.sdk/System/Library/Frameworks/CoreAudio.framework/Versions/A/Headers/AudioHardwareBase.h#L601-L607