/***************************************************************************

 *

 * seq.h

 *

 ***************************************************************************

 *

 * midi player function prototypes

 *

 ***************************************************************************/



#ifndef SEQ_H_INCLUDED

#define SEQ_H_INCLUDED



/*

 * includes

 */



/*

 * defines

 */



#define SEQPLAY_PAUSED	1

#define SEQPLAY_LOOP	2

#define SEQPLAY_END		4



/*

 * typedefs

 */



/*

 * structures

 */



// modified to match SQ2 resources

struct sampleMap

{

	int		resId;

	int		sfxHandle;

	unsigned long	freq;

	int		fade;

	char		smpNote;

	char		disable;

	char		pad[2];

};



struct noteHandle

{

	struct noteHandle *next;

	unsigned long handle;

	unsigned char note;

	unsigned char orgVol;

};



struct seq

{

	unsigned long pitchBendRange;

	unsigned long numSamples;

	unsigned char *data;

	struct sampleMap samples[1];

};



struct seqPlay

{

	struct seqPlay *next;



	struct seq *s;

	unsigned char *playPtr;

	unsigned long currentTime;

	unsigned long lastEventTime;

	unsigned char flags;

	unsigned char pitchSemitones;

	struct noteHandle **noteHandles;

	int vol,pan,priority,spread;



	unsigned char *updateBuffer;

	unsigned long updateMask;

};



/*

 * globals

 */



extern volatile int seqCallbackOccurred;

extern int seqOpen;



/*

 * function prototypes

 */



extern void SEQConstructor(unsigned char **);

extern void SEQFree(struct seq *s);



struct seqPlay *SEQPlay(struct seq *sq,int flags,int vol,int pan,int priority);

extern void SEQPlayPause(struct seqPlay *s);

extern void SEQPlayUnPause(struct seqPlay *s);

extern void SEQPlayStop(struct seqPlay *s);



extern void SEQPlaySetVol(struct seqPlay *s,int vol);

extern void SEQPlaySetPan(struct seqPlay *s,int pan);

extern void SEQPlaySetSpread(struct seqPlay *s,int spread);

extern void SEQPlaySetPriority(struct seqPlay *s,int priority);





extern void SEQAdvanceTime(struct seqPlay *s);

extern void SEQOpen(int latency);

extern void SEQClose(void);

extern void SEQStopAll(void);





extern unsigned long SEQGetDuration(struct seq *s);





#endif