#ifdef DEBUG_MP3
#define debug_printf(fmt,...) printf(fmt, ##__VA_ARGS__);
#else
#define debug_printf(fmt,...)
#endif
#define NTOM_MUL (32768)

struct buf {
	unsigned char *pnt;
	long size;
	long pos;
	struct buf *next;
	struct buf *prev;
};

struct framebuf {
	struct buf *buf;
	long pos;
	struct frame *next;
	struct frame *prev;
};

struct mpstr {
	struct buf *head, *tail;
	int bsize;
	int framesize;
	int fsizeold;
	struct frame fr;
	unsigned char bsspace[2][MAXFRAMESIZE + 512];	/* MAXFRAMESIZE */
	real hybrid_block[2][2][SBLIMIT * SSLIMIT];
	int hybrid_blc[2];
	unsigned long header;
	int bsnum;
	real synth_buffs[2][2][0x110];
	int synth_bo;
	long outscale;				/* volume control default value 32768 */
	long outsamplerate;			/* raw output rate default same as mp3 sample rate */
	struct pcm_workingsample worksample;	/* keep the state of the working sample for threads */
	int initmp3;				/* flag for first initialisation */
	int longLimit[9][23];		/*sample limits re setting volume */
	int shortLimit[9][14];
	real decwin[512 + 32];		/* scale table */
	unsigned long ntom_val[2];
	unsigned long ntom_step;
};

#define BOOL int

#define MP3_ERR -1
#define MP3_OK  0
#define MP3_NEED_MORE 1
#define MP3_TOOSMALL 2

void InitMP3Constants(void);
BOOL InitMP3(struct mpstr *mp, long outscale, int samplerate);
int decodeMP3(struct mpstr *mp, char *inmemory, int inmemsize, char *outmemory, int outmemsize, int *done);
void ExitMP3(struct mpstr *mp);

extern int synth_ntom_set_step(struct mpstr *mp, long, long);
extern int synth_ntom(struct mpstr *mp, real * bandPtr, int channel, unsigned char *out, int *pnt);
extern int synth_ntom_mono(struct mpstr *mp, real * bandPtr, unsigned char *samples, int *pnt);
extern int synth_ntom_8bit(real *, int, unsigned char *, int *);
extern int synth_ntom_mono2stereo(real *, unsigned char *, int *);
extern int synth_ntom_8bit_mono(real *, unsigned char *, int *);
extern int synth_ntom_8bit_mono2stereo(real *, unsigned char *, int *);

extern void init_layer3_sample_limits(struct mpstr *mp, int down_sample_sblimit);
extern void init_layer3_const(void);
extern int do_layer3(struct mpstr *mp, unsigned char *, int *);

extern void make_decode_tables_scale(struct mpstr *mp, long scaleval);
extern void make_decode_tables_const(void);
extern void make_conv16to8_table(int);

extern void dct64(real *, real *, real *);

extern unsigned int get1bit(struct mpstr *mp);
extern unsigned int getbits(struct mpstr *mp, int);
extern unsigned int getbits_fast(struct mpstr *mp, int);
extern int set_pointer(struct mpstr *mp, long backstep);
