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annotate libgsmefr/gsm_efr.h @ 30:2272ba6f6879

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libgsmefr: beginning with API definition
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 23 Nov 2022 07:54:04 +0000
parents libgsmfrp/gsm_fr_preproc.h@2b5770c715ee
children 88468d5b3590
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1 /*
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2 * This header file is the external public interface to libgsmefr;
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3 * it should be installed in the same system include directory
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4 * as <gsm.h> and <gsm_fr_preproc.h> for the older FR codec.
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5 */
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7 #ifndef __GSM_EFR_H
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8 #define __GSM_EFR_H
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10 #include <stdint.h>
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12 struct EFR_encoder_state; /* opaque to external users */
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13 struct EFR_decoder_state; /* ditto */
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15 extern struct EFR_encoder_state *EFR_encoder_create(int dtx);
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16 extern struct EFR_decoder_state *EFR_decoder_create(void);
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17 /* use standard free() call to free both afterward */
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19 /* reset state to initial */
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20 extern void EFR_encoder_reset(struct EFR_encoder_state *st, int dtx);
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21 extern void EFR_decoder_reset(struct EFR_decoder_state *st);
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23 /* encoder public functions */
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25 extern void EFR_encode_params(struct EFR_encoder_state *st, const int16_t *pcm,
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26 int16_t *params, int *sp, int *vad);
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27 extern void EFR_encode_frame(struct EFR_encoder_state *st, const int16_t *pcm,
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28 uint8_t *frame, int *sp, int *vad);
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30 /* decoder public functions */
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32 extern void EFR_decode_params(struct EFR_decoder_state *st,
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33 const int16_t *params, int bfi, int sid, int taf,
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34 int16_t *pcm);
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35 extern void EFR_decode_frame(struct EFR_decoder_state *st, const uint8_t *frame,
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36 int bfi, int taf, int16_t *pcm);
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37 extern void EFR_decode_bfi_nodata(struct EFR_decoder_state *st, int taf,
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38 int16_t *pcm);
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40 /* stateless utility functions */
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42 extern int EFR_sid_classify(const uint8_t *frame);
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43 extern void EFR_frame2params(const uint8_t *frame, int16_t *params);
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44 extern void EFR_params2frame(const int16_t *params, int sid, uint8_t *frame);
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46 #endif /* include guard */