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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 */
};
#define BOOL int
#define MP3_ERR -1
#define MP3_OK 0
#define MP3_NEED_MORE 1
void InitMP3Constants(void);
BOOL InitMP3(struct mpstr *mp, long outscale);
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(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);
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