KYRA: FM-Towns audio driver rewrite

- FM-Towns euphony driver completely rewritten based on KYRA FM-Towns and LOOM towns disasm.

- Split all the emu and driver code from sound_towns.cpp into different files to make things a bit less confusing.

- Move the driver code to common space since the exact same euphony driver is used by LOOM which means we could get rid of the outdated and incomplete ym2612 driver/emu implementation (which doesn't even do things like instrument loading, pan position, etc). I haven't tried to add this to the Scumm engine yet, since I am not  familiar with it and my priority was to get the driver finished first. But from the look of disasm it shouldn't be difficult to do.

- Introduce a generic FM-Towns audio interface based on FM-Towns system file disasm which was necessary for the euphony driver rewrite. Every FM-Towns game I have seen so far seems to access the audio hardware via these system functions. This interface implementation will also allow reasonably simple creation of new FM-Towns audio drivers (e.g. this could be used for Kings Quest 5 FM-Towns or others).

- Move the PC98 driver to common space, too, since I have a strong feeling that this driver is also used in the PC98 version of Future Wars

- This also improves KYRA FM-Towns music quality, sound effects accuracy and music fading.

svn-id: r51645

4 files changed, 15 insertions, 1 deletions

diff --git a/tools/create_kyradat/create_kyradat.cpp b/tools/create_kyradat/create_kyradat.cpp
index c1bcbc006c..38fc60763e 100644
--- a/tools/create_kyradat/create_kyradat.cpp
+++ b/tools/create_kyradat/create_kyradat.cpp
@@ -45,7 +45,7 @@
 #include <map>
 
 enum {
-	kKyraDatVersion = 70
+	kKyraDatVersion = 71
 };
 
 const ExtractFilename extractFilenames[] = {
@@ -163,6 +163,7 @@ const ExtractFilename extractFilenames[] = {
 	{ k1CreditsStrings, kTypeRawData, true },
 
 	// FM-TOWNS specific
+	{ k1TownsMusicFadeTable, k3TypeRaw16to8, false },
 	{ k1TownsSFXwdTable, kTypeTownsWDSfxTable, false },
 	{ k1TownsSFXbtTable, kTypeRawData, false },
 	{ k1TownsCDATable, kTypeRawData, false },
@@ -898,6 +899,8 @@ const char *getIdString(const int id) {
 		return "k1GUIStrings";
 	case k1ConfigStrings:
 		return "k1ConfigStrings";
+	case k1TownsMusicFadeTable:
+		return "k1TownsMusicFadeTable";
 	case k1TownsSFXwdTable:
 		return "k1TownsSFXwdTable";
 	case k1TownsSFXbtTable:
diff --git a/tools/create_kyradat/create_kyradat.h b/tools/create_kyradat/create_kyradat.h
index 435e239381..25a950935b 100644
--- a/tools/create_kyradat/create_kyradat.h
+++ b/tools/create_kyradat/create_kyradat.h
@@ -138,6 +138,8 @@ enum kExtractID {
 
 	k1CreditsStrings,
 
+	k1TownsMusicFadeTable,
+	k1TownsMusicFadeTable,
 	k1TownsSFXwdTable,
 	k1TownsSFXbtTable,
 	k1TownsCDATable,
diff --git a/tools/create_kyradat/games.cpp b/tools/create_kyradat/games.cpp
index 9976451067..1bd7d31648 100644
--- a/tools/create_kyradat/games.cpp
+++ b/tools/create_kyradat/games.cpp
@@ -411,6 +411,8 @@ const int kyra1TownsNeed[] = {
 	k1NewGameString,
 	k1ConfigStrings,
 
+	k1TownsMusicFadeTable,
+	k1TownsMusicFadeTable,
 	k1TownsSFXwdTable,
 	k1TownsSFXbtTable,
 	k1TownsCDATable,
diff --git a/tools/create_kyradat/tables.cpp b/tools/create_kyradat/tables.cpp
index a74f58e2c3..dc8163901d 100644
--- a/tools/create_kyradat/tables.cpp
+++ b/tools/create_kyradat/tables.cpp
@@ -968,6 +968,12 @@ const ExtractEntrySearchData k1ConfigStringsProvider[] = {
 	EXTRACT_END_ENTRY
 };
 
+const ExtractEntrySearchData k1TownsMusicFadeTableProvider[] = {
+	{ UNK_LANG, kPlatformFMTowns, { 0x00000B10, 0x000076DE, { { 0x9F, 0x08, 0x5B, 0xD6, 0x25, 0x7F, 0x11, 0x08, 0x87, 0x45, 0x92, 0xD3, 0xE5, 0xA8, 0x7C, 0x2F } } } },
+
+	EXTRACT_END_ENTRY
+};
+	
 const ExtractEntrySearchData k1TownsSFXwdTableProvider[] = {
 	{ UNK_LANG, kPlatformFMTowns, { 0x00012608, 0x006717A1, { { 0x34, 0xDD, 0x2D, 0xA5, 0x14, 0x05, 0xEE, 0x2F, 0x93, 0x7C, 0x78, 0x4D, 0xCA, 0x13, 0xED, 0x93 } } } },
 
@@ -1823,6 +1829,7 @@ const ExtractEntry extractProviders[] = {
 	{ k1SpecialPalette33, k1SpecialPalette33Provider },
 	{ k1GUIStrings, k1GUIStringsProvider },
 	{ k1ConfigStrings, k1ConfigStringsProvider },
+	{ k1TownsMusicFadeTable, k1TownsMusicFadeTableProvider },
 	{ k1TownsSFXwdTable, k1TownsSFXwdTableProvider },
 	{ k1TownsSFXbtTable, k1TownsSFXbtTableProvider },
 	{ k1TownsCDATable, k1TownsCDATableProvider },