I_GetMusicLength declarations for other interfaces

src/android/i_sound.c

@@ -158,6 +158,11 @@ boolean I_SetSongSpeed(float speed)
         return false;
 }
 
+UINT32 I_GetMusicLength(void)
+{
+        return 0;
+}
+
 boolean I_SetMusicPosition(UINT32 position)
 {
         (void)position;

src/djgppdos/i_sound.c

@@ -551,6 +551,11 @@ boolean I_SetSongSpeed(float speed)
 	return false;
 }
 
+UINT32 I_GetMusicLength(void)
+{
+	return 0;
+}
+
 boolean I_SetMusicPosition(UINT32 position)
 {
     (void)position;
@@ -559,7 +564,7 @@ boolean I_SetMusicPosition(UINT32 position)
 
 UINT32 I_GetMusicPosition(void)
 {
-    return 0.;
+    return 0;
 }
 
 boolean I_MIDIPlaying(void)

src/dummy/i_sound.c

@@ -146,6 +146,11 @@ boolean I_SetSongTrack(int track)
 	return false;
 }
 
+UINT32 I_GetMusicLength(void)
+{
+	return 0;
+}
+
 boolean I_SetMusicPosition(UINT32 position)
 {
     (void)position;

src/sdl/sdl_sound.c

@@ -1989,6 +1989,11 @@ boolean I_SetSongSpeed(float speed)
 	return false;
 }
 
+UINT32 I_GetMusicLength(void)
+{
+	return 0;
+}
+
 boolean I_SetMusicPosition(UINT32 position)
 {
 	(void)position;

src/win32/win_snd.c

@@ -774,6 +774,15 @@ boolean I_SetSongSpeed(float speed)
 	return true;
 }
 
+UINT32 I_GetMusicLength()
+{
+	if (midimode)
+		return 0;
+	UINT32 length;
+	e = FMOD_Sound_GetLength(music_stream, length, FMOD_TIMEUNIT_MS);
+	return length;
+}
+
 boolean I_SetMusicPosition(UINT32 position)
 {
 	if(midimode)