Added I_GetMusicType and removed midimode variable

* Revised S_PlayMusic arguments
* Now music plays again!

(cherry picked from commit 55f3803e4b9f8104c90cc6c769d54121e5bac0b8)

src/i_sound.h

@@ -18,6 +18,21 @@
 #include "sounds.h"
 #include "command.h"
 
+// copied from SDL mixer, plus GME
+typedef enum {
+	MU_NONE,
+	MU_CMD,
+	MU_WAV,
+	MU_MOD,
+	MU_MID,
+	MU_OGG,
+	MU_MP3,
+	MU_MP3_MAD_UNUSED, // use MU_MP3 instead
+	MU_FLAC,
+	MU_MODPLUG_UNUSED, // use MU_MOD instead
+	MU_GME
+} musictype_t;
+
 /**	\brief Sound subsystem runing and waiting
 */
 extern UINT8 sound_started;
@@ -108,6 +123,9 @@ void I_SetSfxVolume(UINT8 volume);
 //
 //  MUSIC I/O
 //
+
+musictype_t I_GetMusicType(void);
+
 /** \brief Init the music systems
 */
 void I_InitMusic(void);

src/s_sound.c

@@ -1227,7 +1227,7 @@ static boolean S_MIDIMusic(const char *mname, boolean looping)
 	return true;
 }
 
-static boolean S_DigMusic(const char *mname, boolean looping)
+static boolean S_PlayMusic(boolean looping)
 {
 	if (nodigimusic || digital_disabled)
 		return false; // try midi
@@ -1235,11 +1235,6 @@ static boolean S_DigMusic(const char *mname, boolean looping)
 	if (!I_StartDigSong(mname, looping))
 		return false;
 
-	strncpy(music_name, mname, 7);
-	music_name[6] = 0;
-	music_lumpnum = LUMPERROR;
-	music_data = NULL;
-	music_handle = 0;
 	return true;
 }
 
@@ -1262,11 +1257,18 @@ void S_ChangeMusic(const char *mmusic, UINT16 mflags, boolean looping)
 	if (strncmp(music_name, mmusic, 6))
 	{
 		S_StopMusic(); // shutdown old music
-		if (!S_DigMusic(mmusic, looping) && !S_MIDIMusic(mmusic, looping))
+
+		if (!S_LoadMusic(mmusic))
 		{
 			CONS_Alert(CONS_ERROR, M_GetText("Music lump %.6s not found!\n"), mmusic);
 			return;
 		}
+
+		if (!S_PlayMusic(looping))
+		{
+			CONS_Alert(CONS_ERROR, "Music cannot be played!\n");
+			return;
+		}
 	}
 	I_SetSongTrack(mflags & MUSIC_TRACKMASK);
 }

src/sdl/mixer_sound.c

@@ -62,7 +62,6 @@
 
 UINT8 sound_started = false;
 
-static boolean midimode;
 static Mix_Music *music;
 static UINT8 music_volume, midi_volume, sfx_volume;
 static float loop_point;
@@ -87,7 +86,6 @@ void I_StartupSound(void)
 		return;
 	}
 
-	midimode = false;
 	music = NULL;
 	music_volume = midi_volume = sfx_volume = 0;
 
@@ -436,6 +434,25 @@ void I_SetSfxVolume(UINT8 volume)
 // Music
 //
 
+musictype_t I_GetMusicType(void)
+{
+#ifdef HAVE_LIBGME
+	if (gme)
+		return MU_GME;
+	else
+#endif
+	if (!music)
+		return MU_NONE;
+	else if (Mix_GetMusicType(music) == MUS_MID)
+		return MU_MID;
+	else if (Mix_GetMusicType(music) == MUS_MOD || Mix_GetMusicType(music) == MUS_MODPLUG_UNUSED)
+		return MU_MOD;
+	else if (Mix_GetMusicType(music) == MUS_MP3 || Mix_GetMusicType(music) == MUS_MP3_MAD_UNUSED)
+		return MU_MP3;
+	else
+		return (musictype_t)Mix_GetMusicType(music);
+}
+
 // Music hooks
 static void music_loop(void)
 {
@@ -470,8 +487,19 @@ FUNCMATH void I_InitMusic(void)
 
 void I_ShutdownMusic(void)
 {
-	I_ShutdownDigMusic();
+#ifdef HAVE_LIBGME
-	I_ShutdownMIDIMusic();
+	if (gme)
+	{
+		Mix_HookMusic(NULL, NULL);
+		gme_delete(gme);
+		gme = NULL;
+	}
+#endif
+	if (!music)
+		return;
+	Mix_HookMusicFinished(NULL);
+	Mix_FreeMusic(music);
+	music = NULL;
 }
 
 void I_PauseSong(INT32 handle)
@@ -492,7 +520,15 @@ void I_ResumeSong(INT32 handle)
 // Digital Music
 //
 
-void I_InitDigMusic(void)
+void I_SetDigMusicVolume(UINT8 volume)
+{
+	music_volume = volume;
+	if (I_GetMusicType() == MU_MID || !music)
+		return;
+	Mix_VolumeMusic((UINT32)volume*128/31);
+}
+
+boolean I_SetSongSpeed(float speed)
 {
 #ifdef HAVE_LIBGME
 	gme = NULL;
@@ -691,8 +727,6 @@ boolean I_StartDigSong(const char *musicname, boolean looping)
 
 void I_StopDigSong(void)
 {
-	if (midimode)
-		return;
 #ifdef HAVE_LIBGME
 	if (gme)
 	{
@@ -791,7 +825,7 @@ void I_SetMIDIMusicVolume(UINT8 volume)
 	midi_volume = 31;
 	//midi_volume = volume;
 
-	if (!midimode || !music)
+	if (I_GetMusicType() != MU_MID || !music)
 		return;
 	Mix_VolumeMusic((UINT32)midi_volume*128/31);
 }
@@ -834,10 +868,6 @@ void I_StopSong(INT32 handle)
 
 void I_UnRegisterSong(INT32 handle)
 {
-	if (!midimode || !music)
-		return;
-
-	(void)handle;
 	Mix_FreeMusic(music);
 	music = NULL;
 }