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#ifndef LIBGHA_H
#define LIBGHA_h
#define FLOAT float
#include <stddef.h>
typedef struct gha_ctx gha_ctx;
struct gha_info {
FLOAT freq;
FLOAT phase;
FLOAT magnitude;
};
// size must be even
gha_ctx* gha_create_ctx(size_t size);
void gha_free_ctx(gha_ctx* ctx);
// This function performs one GHA step for given PCM signal,
// the result will be writen in to given gha_ingo structure
void gha_analyze_one(const FLOAT* pcm, struct gha_info* info, gha_ctx* ctx);
// Performs one GHA step and extract analysed harmonic from given PCM signal
void gha_extract_one(FLOAT* pcm, struct gha_info* info, gha_ctx* ctx);
#endif
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