BGameSoundDevice is broken on hybrid installs

[pulkomandy]

The BGameSoundDevice class is at te core of the sound part of the game kit. This class creates its own mixer and does not use the system one. According to a TODO in the code, this is bad practise.

On a gcc2h system, a gcc4 compiled app will not work, because :

• The app is linked with libgame, which itself links libmedia
• This class tries to create a mixer, which loads the mixer add on

As a consequence, the (gcc2) mixer add-on gets loaded in a gcc4 app. This does not work.

BMediaRoster::InstantiateDormantNode: addon-id 6, flavor_id 0, flags 0x0
resolve symbol "__tf11BTimeSource" returned: -2147478780
DormantNodeManager::LoadAddon: loading "/boot/system/add-ons/media/mixer.media_addon" failed: Symbol not found
DormantNodeManager::GetAddon: can't load add-on 6 from path /boot/system/add-ons/media/mixer.media_addon
BMediaRosterEx::InstantiateDormantNode: GetAddon failed

This makes the whole BGameSound stuff basically unuseable in hybrid systems. The fix is to remove this mixer from the class, or to make it use a gcc4 one when needed (like we do for translators addons).

[leavengood]

Taking ownership as I'll probably look at this before Stefano.

[pulkomandy]

Attempt at patching it

[pulkomandy]

Here is my attempt at a patch for this. Basically I removed the whole connection stuff in this class and made the sounds in the array connect directly to the system mixer.

This gets us a bit further, but still no sound output yet. I think each of the sounds need to be started and otherwise managed directly now ?

I'd appreciate if someone else could have a look at my code, since I'm not very familiar with media kit stuff (and wanted to use the game kit classes to avoid messing with it... :))

[pulkomandy]

Applied in hrev43127, since it seems to work fine.