Initial music playback support code

# Conflicts:
#	source/exhumed/src/cd.cpp
#	source/exhumed/src/cd.h

source/exhumed/src/cd.cpp

@@ -16,9 +16,13 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 //-------------------------------------------------------------------------
 #include "ns.h"
+#include "build.h"
 #include "compat.h"
 #include "baselayer.h"
 #include "cd.h"
+#include "fx_man.h"
+#include "sound.h"
+#include "exhumed.h"
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -26,6 +30,11 @@ BEGIN_PS_NS
 
 extern short word_9AC30;
 
+static char *pTrack = NULL;
+int trackhandle = -1;
+int nLastVolumeSet = 0;
+
+
 int cd_check_device_present()
 {
     return 1;
@@ -47,31 +56,113 @@ int initcdaudio()
 
 void setCDaudiovolume(int val)
 {
-
+    if (trackhandle > 0) {
+        FX_SetPan(trackhandle, val, val, val);
+    }
 }
 
 int playCDtrack(int nTrack)
 {
-    return 1;
+    if (nTrack < 2) {
+        return 0;
+    }
+
+    char filebuf[128];
+
+    // prefer flac if available
+    sprintf(filebuf, "exhumed%02d.flac", nTrack);
+    int32_t hFile = kopen4load(filebuf, 0);
+    if (hFile < 0)
+    {
+        // try ogg vorbis now
+        sprintf(filebuf, "exhumed%02d.ogg", nTrack);
+        hFile = kopen4load(filebuf, 0);
+        if (hFile < 0) {
+            return 0;
+        }
+    }
+
+    int32_t nFileLen = kfilelength(hFile);
+
+    pTrack = (char*)Xaligned_alloc(16, nFileLen);
+    int nRead = kread(hFile, pTrack, nFileLen);
+
+    kclose(hFile);
+
+    trackhandle = FX_Play(pTrack, nRead, -1, 0, 0, 255, 255, 255, FX_MUSIC_PRIORITY, fix16_one, MUSIC_ID);
+    if (trackhandle < 0)
+    {
+        if (pTrack)
+        {
+            Xaligned_free(pTrack);
+            pTrack = NULL;
+        }
+        return 0;
+    }
+
+    setCDaudiovolume(gMusicVolume);
+
+    nCDTrackLength = 1;
+
+    return nCDTrackLength;
 }
 
 void StartfadeCDaudio()
 {
-
+    if (CDplaying()) {
+        nLastVolumeSet = gMusicVolume;
+    }
 }
 
 int StepFadeCDaudio()
 {
+    if (!CDplaying()) {
     return 0;
+    }
+
+    if (nLastVolumeSet <= 0) {
+        return 0;
+    }
+
+    nLastVolumeSet -= 8;
+
+    if (nLastVolumeSet <= 0) {
+        nLastVolumeSet = 0;
+    }
+
+    setCDaudiovolume(nLastVolumeSet);
+
+    if (nLastVolumeSet == 0) {
+        StopCD();
+    }
+
+    return 1;
 }
 
 int CDplaying()
 {
+    if (trackhandle > 0 && pTrack) { // better way to do this?
     return 1;
+    }
+    else {
+        return 0;
+    }
 }
 
 void StopCD()
 {
+    if (trackhandle > 0) {
+        FX_StopSound(trackhandle);
+        trackhandle = -1;
+    }
 
+    nCDTrackLength = 0;
+
+    if (pTrack)
+    {
+        Xaligned_free(pTrack);
+        pTrack = NULL;
+    }
 }
+
 END_PS_NS

source/exhumed/src/cd.h

@@ -21,6 +21,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 BEGIN_PS_NS
 
+extern int trackhandle;
+
 int initcdaudio();
 void setCDaudiovolume(int val);
 int playCDtrack(int nTrack);

source/exhumed/src/cdaudio.cpp

@@ -17,12 +17,14 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //-------------------------------------------------------------------------
 #include "ns.h"
 #include "cdaudio.h"
+#include "cd.h"
+#include "exhumed.h"
+
 
 BEGIN_PS_NS
 
 int fadecdaudio()
 {
-/* TODO
     StartfadeCDaudio();
 
     while (1)
@@ -34,7 +36,7 @@ int fadecdaudio()
             WaitTicks(1);
         }
     }
-*/
+
     return 1;
 }
 

source/exhumed/src/exhumed.cpp

@@ -874,9 +874,9 @@ void timerhandler()
         lastfps = fps;
         fps = 0;
 
-        if (nCDTrackLength > 0) {
-            nCDTrackLength--;
-        }
+//        if (nCDTrackLength > 0) {
+//            nCDTrackLength--;
+//        }
     }
     if (!bInMove)
         OSD_DispatchQueued();
@@ -2291,7 +2291,7 @@ LOOP3:
     lPlayerXVel = 0;
     lPlayerYVel = 0;
     movefifopos = movefifoend;
-    nCDTrackLength = 0;
+//    nCDTrackLength = 0;
     RefreshStatus();
 
     if (bSerialPlay) {

source/exhumed/src/menu.cpp

@@ -923,7 +923,7 @@ void menu_AdjustVolume()
                     }
 
 // TODO				SetMusicVolume();
-// TODO				setCDaudiovolume(gMusicVolume);
+    				setCDaudiovolume(gMusicVolume);
                     continue;
                 }
 
@@ -955,8 +955,8 @@ void menu_AdjustVolume()
                         gMusicVolume += 4;
                     }
 
-// TODO				SetMusicVolume();
-// TODO				setCDaudiovolume(gMusicVolume);
+//  				SetMusicVolume();
+    				setCDaudiovolume(gMusicVolume);
                     continue;
                 }
 

source/exhumed/src/sound.cpp

@@ -35,6 +35,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include "snake.h"
 #include "trigdat.h"
 #include "sequence.h"
+#include "cd.h"
 
 BEGIN_PS_NS
 
@@ -295,6 +296,12 @@ void CalcASSPan(int nPan, int nVolume, int *pLeft, int *pRight)
 
 void ASSCallback(intptr_t num)
 {
+    if ((int32_t)num == MUSIC_ID) {
+        trackhandle = -1;
+        StopCD();
+        return;
+    }
+
     // TODO: add mutex?
     if ((int32_t)num == -1)
         handle = -1;
@@ -1174,7 +1181,7 @@ void StopAllSounds(void)
 
     for (int i = 0; i < kMaxActiveSounds; i++)
     {
-        if (sActiveSound[i].f_e >= 0)
+        if (sActiveSound[i].f_e >= 0 && sActiveSound[i].f_e != trackhandle)
             FX_StopSound(sActiveSound[i].f_e);
         // AIL_end_sample(sActiveSound[i].f_e);
     }

source/exhumed/src/sound.h

@@ -29,6 +29,8 @@ BEGIN_PS_NS
 
 #define kCreepyCount 150
 
+#define MUSIC_ID    (-65536)
+
 enum {
     kSound0 = 0,
     kSound1,