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// HACK: Instead of using the full st_i.h (and then st.h and stconfig.h etc.)
// from SoX, we use this minimal variant which is just sufficient to make
// resample.c and rate.c compile.
#ifndef RATE_H
#define RATE_H
#include <stdio.h>
#include <assert.h>
#include "scummsys.h"
#include "common/engine.h"
#include "common/util.h"
#include "audiostream.h"
typedef int16 st_sample_t;
typedef uint32 st_size_t;
typedef uint32 st_rate_t;
typedef struct {
bool used;
byte priv[1024];
} eff_struct;
typedef eff_struct *eff_t;
/* Minimum and maximum values a sample can hold. */
#define ST_SAMPLE_MAX 0x7fffL
#define ST_SAMPLE_MIN (-ST_SAMPLE_MAX - 1L)
#define ST_EOF (-1)
#define ST_SUCCESS (0)
/* here for linear interp. might be useful for other things */
static st_rate_t st_gcd(st_rate_t a, st_rate_t b)
{
if (b == 0)
return a;
else
return st_gcd(b, a % b);
}
static inline void clampedAdd(int16& a, int b) {
int val = a + b;
if (val > ST_SAMPLE_MAX)
a = ST_SAMPLE_MAX;
else if (val < ST_SAMPLE_MIN)
a = ST_SAMPLE_MIN;
else
a = val;
}
// Q&D hack to get this SOX stuff to work
#define st_report warning
#define st_warn warning
#define st_fail error
// Resample (high quality)
int st_resample_getopts(eff_t effp, int n, char **argv);
int st_resample_start(eff_t effp, st_rate_t inrate, st_rate_t outrate);
int st_resample_flow(eff_t effp, InputStream &input, st_sample_t *obuf, st_size_t *osamp);
int st_resample_drain(eff_t effp, st_sample_t *obuf, st_size_t *osamp);
int st_resample_stop(eff_t effp);
// Rate (linear filter, low quality)
int st_rate_getopts(eff_t effp, int n, char **argv);
int st_rate_start(eff_t effp, st_rate_t inrate, st_rate_t outrate);
int st_rate_flow(eff_t effp, InputStream &input, st_sample_t *obuf, st_size_t *osamp);
int st_rate_stop(eff_t effp);
#endif
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