csdr/ima_adpcm.h

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#pragma once
#ifdef USE_IMA_ADPCM
typedef struct ImaState {
int index; // Index into step size table
int previousValue; // Most recent sample value
} ima_adpcm_state_t;
ima_adpcm_state_t encode_ima_adpcm_i16_u8(short* input, unsigned char* output, int input_length, ima_adpcm_state_t state);
ima_adpcm_state_t decode_ima_adpcm_u8_i16(unsigned char* input, short* output, int input_length, ima_adpcm_state_t state);
#endif