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#ifndef DECODE144_H
#define DECODE144_H
/* internal globals */
typedef struct {
unsigned int resetflag, val, oldval;
unsigned int unpacked[28]; /* buffer for unpacked input */
unsigned int *iptr; /* pointer to current input (from unpacked) */
unsigned int gval;
unsigned short *gsp;
unsigned int gbuf1[8];
unsigned short gbuf2[120];
signed short output_buffer[40];
unsigned int *decptr; /* decoder ptr */
signed short *decsp;
/* the swapped buffers */
unsigned int swapb1a[10];
unsigned int swapb2a[10];
unsigned int swapb1b[10];
unsigned int swapb2b[10];
unsigned int *swapbuf1;
unsigned int *swapbuf2;
unsigned int *swapbuf1alt;
unsigned int *swapbuf2alt;
unsigned int buffer[5];
unsigned short int buffer_2[148];
unsigned short int buffer_a[40];
unsigned short int buffer_b[40];
unsigned short int buffer_c[40];
unsigned short int buffer_d[40];
unsigned short int work[50];
unsigned short *sptr;
int buffer1[10];
int buffer2[10];
signed short wavtable1[2304];
unsigned short wavtable2[2304];
} Real_internal;
/* consts */
#define NBLOCKS 4 /* number of segments within a block */
#define BLOCKSIZE 40 /* (quarter) block size in 16-bit words (80 bytes) */
#define HALFBLOCK 20 /* BLOCKSIZE/2 */
#define BUFFERSIZE 146 /* for do_output */
/* prototypes */
static int t_sqrt (unsigned int x);
static void do_voice (int *a1, int *a2);
static void do_output_subblock (Real_internal *glob, int x);
static void rotate_block (short *source, short *target, int offset);
static int irms (short *data, int factor);
static void add_wav (Real_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest);
static void final (Real_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len);
static void unpack_input (unsigned char *input, unsigned int *output);
static unsigned int rms (int *data, int f);
static void dec1 (Real_internal *glob, int *data, int *inp, int n, int f);
static void dec2 (Real_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l);
static int eq (Real_internal *glob, short *in, int *target);
#endif /* !DECODE144_H */
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