music players

include/gba/m4a.h

@@ -46,18 +46,131 @@ typedef struct SongHeader {
 
 typedef struct Song {
     const SongHeader* header;
-    u16 ms;
+    u16 musicPlayerIndex;
     u16 me;
 } Song;
 
+typedef struct SoundChannel {
+    u8 statusFlags;
+    u8 type;
+    u8 rightVolume;
+    u8 leftVolume;
+    u8 attack;
+    u8 decay;
+    u8 sustain;
+    u8 release;
+    u8 key;
+    u8 envelopeVolume;
+    u8 envelopeVolumeRight;
+    u8 envelopeVolumeLeft;
+    u8 echoVolume;
+    u8 echoLength;
+    u8 unk0;
+    u8 unk1;
+    u8 gateTime;
+    u8 midiKey;
+    u8 velocity;
+    u8 priority;
+    u8 rhythmPan;
+    u8 unk2[3];
+    u32 count;
+    u32 fw;
+    u32 frequency;
+    WaveData* wav;
+    u32 currentPointer;
+    MusicPlayerTrack* track;
+    u32 prev;
+    u32 next;
+    u32 unk3;
+    u16 xpi;
+    u16 xpc;
+} SoundChannel;
+
+typedef void (*MPlayMainFunc)(MusicPlayerInfo*);
+
+// typedef above
+struct MusicPlayerInfo {
+    const SongHeader* songHeader;
+    u32 status;
+    u8 trackCount;
+    u8 priority;
+    u8 cmd;
+    u8 unk_B;
+    u32 clock;
+    u8 gap[8];
+    u8* memAccArea;
+    u16 tempoD;
+    u16 tempoU;
+    u16 tempoI;
+    u16 tempoC;
+    u16 fadeOI;
+    u16 fadeOC;
+    u16 fadeOV;
+    MusicPlayerTrack* tracks;
+    ToneData* tone;
+    u32 ident;
+    MPlayMainFunc func;
+    u32* intp;
+};
+
+#define MPT_FLG_VOLSET 0x01
+#define MPT_FLG_VOLCHG 0x03
+#define MPT_FLG_PITSET 0x04
+#define MPT_FLG_PITCHG 0x0C
+#define MPT_FLG_START 0x40
+#define MPT_FLG_EXIST 0x80
+
+// typedef above
+struct MusicPlayerTrack {
+    u8 flags;
+    u8 wait;
+    u8 patternLevel;
+    u8 repN;
+    u8 gateTime;
+    u8 key;
+    u8 velocity;
+    u8 runningStatus;
+    u8 keyM;
+    u8 pitM;
+    s8 keyShift;
+    s8 keyShiftX;
+    s8 tune;
+    u8 pitX;
+    s8 bend;
+    u8 bendRange;
+    u8 volMR;
+    u8 volML;
+    u8 vol;
+    u8 volX;
+    s8 pan;
+    s8 panX;
+    s8 modM;
+    u8 mod;
+    u8 modT;
+    u8 lfoSpeed;
+    u8 lfoSpeedC;
+    u8 lfoDelay;
+    u8 lfoDelayC;
+    u8 priority;
+    u8 echoVolume;
+    u8 echoLength;
+    SoundChannel* chan;
+    ToneData tone;
+    u8 gap[10];
+    u16 unk_3A;
+    u32 unk_3C;
+    u8* cmdPtr;
+    u8* patternStack[3];
+};
+
 typedef struct MusicPlayer {
     MusicPlayerInfo* info;
-    MusicPlayerTrack* track;
-    u8 unk_8;
+    MusicPlayerTrack* tracks;
+    u8 nTracks;
     u16 unk_A;
 } MusicPlayer;
 
-extern const MusicPlayer gMPlayTable[];
+extern const MusicPlayer gMusicPlayers[];
 extern const Song gSongTable[];
 
 void m4aSoundInit(void);