1. Remove _sc55 bool. All Roland GS-capable devices have MT-32 sound/drum maps, so they should always be used when _enable_gs is set.
2. Always enable _native_mt32 if Roland GS mode is selected. I don't know why I never did this originally, since _enable_gs is automatically disabled for SCUMM v6+ games that use General MIDI tracks instead of MT-32 music.
3. Set master tune for GS devices to 442.0kHz. This is the master tune setting for the MT-32.
For old savegames, we now use a "dummy" iMUSE objet to skip the old
iMUSE save state. I had hoped to be able to do this without making
any changes to the iMUSE code itself, but I was unable to.
Also added note about how the save state for the new music will not
quite work if the mixer output rate changes. Personally, I'm not
too worried about that. It breaks, but it shouldn't break badly.
Albeit the code is marked as a hack inside the source, the original behaved
exaclty the same. If the code is removed the PC Speaker output will miss notes,
since unlike the original we only output to parts, which have an instrument set
up.
This tries to make our code a bit more compliant with our code formatting
conventions. For future use, this is the command I used:
git ls-files "*.cpp" "*.h" | xargs sed -i -e 's/[ \t]*$//'
1) Don't skip transpose setting in sysex command 0. There are only a few sounds where this setting is used (mainly sfx).
2) Make MI2 and INDY4 read certain player start parameters from the sound resource. The start parameters usually match our default parameters (exception: e.g. LeChuck's Fortress). The use of these parameters has been dropped in DOTT (they use default parameters like we do).
Many engines follow the advice in audio/midiparser.h and create a
"pseudo-MidiDriver" subclass. But MidiParser really only needs a tiny
subset of the MidiDriver capabilities, namely those found in
MidiDriver_BASE. So we try to subclass from that whenever possible; this
allows us to remove many stub methods, and enables further future
simplifications.
This in turn enables modifying MidiDriver_MPU401::close() to allow
it to be called on a midi driver that has not yet been opened.
The specific issue that triggered me to make these changes was a
crash-upon-quit in HUGO, caused by it instantiating a midi driver,
then encountering an error (missing hugo.dat) *before* having
opened the new midi driver; the general cleanup code then tries
to close the (not yet opened) midi driver -> kaboom
Also fixed some engines which were leaking MidiDriver instances.
* IMuse is no longer a concurrency front-end.
* IMuseInternal now derives from IMuse.
* Common::StackLock used to protect thread-sensitive interface methods (same as IMuseDigital).
* clear_queue() included in stopAllSounds() so it can be removed from the public interface.
* Game ID now specified at init using property().
* Timer callbacks receive a struct containing IMuseInternal and MidiDriver refs, instead of just the latter.
* OSystem pointer from init is now cached and used instead of global.
All references to the g_system and g_scumm globals are now gone. BOOYAH!
Tested with MI2, DOTT and S&M, under Windows, in Native MIDI, Adlib, and Mixed modes. No regressions or concurrency issues observed. Manifestations of the latter are the biggest concern at this point.
svn-id: r21104
Colin Snover
Johannes Schickel
tcarey
Torbjörn Andersson
Max Horn
athrxx
strangerke
Travis Howell
Andre Heider
Jamieson Christian
