#ifndef FX_REVERB_H
#define FX_REVERB_H

#include <stdbool.h>
#include <stdint.h>

#define FX_REVERB_NUM_COMBS    8U
#define FX_REVERB_NUM_ALLPASS  4U

typedef struct
{
    bool  enabled;
    float room_size;  /* 0.0 a 1.0 */
    float damping;    /* 0.0 (brillant) a 1.0 (etouffe) */
    float mix;        /* 0.0 (sec) a 1.0 (100% reverbere) */
} FxReverbParams;

typedef struct
{
    float   *buffer;
    uint32_t size;
    uint32_t idx;
    float    filter_store;
} FxCombState;

typedef struct
{
    float   *buffer;
    uint32_t size;
    uint32_t idx;
} FxAllpassState;

typedef struct
{
    FxCombState    combs[FX_REVERB_NUM_COMBS];
    FxAllpassState allpass[FX_REVERB_NUM_ALLPASS];
} FxReverbState;

void  FxReverb_Init(FxReverbState *state, FxReverbParams *params);
float FxReverb_Process(FxReverbState *state, const FxReverbParams *params, float input);

#endif /* FX_REVERB_H */