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annotate libgsmefr/gsm_efr.h @ 282:9ee8ad3d4d30

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frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 05:44:47 +0000
parents 88468d5b3590
children 9499d12d315b
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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 #define EFR_RTP_FRAME_LEN 31
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13 #define EFR_NUM_PARAMS 57
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15 struct EFR_encoder_state; /* opaque to external users */
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16 struct EFR_decoder_state; /* ditto */
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18 extern struct EFR_encoder_state *EFR_encoder_create(int dtx);
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19 extern struct EFR_decoder_state *EFR_decoder_create(void);
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20 /* use standard free() call to free both afterward */
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22 /* reset state to initial */
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23 extern void EFR_encoder_reset(struct EFR_encoder_state *st, int dtx);
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24 extern void EFR_decoder_reset(struct EFR_decoder_state *st);
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26 /* encoder public functions */
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28 extern void EFR_encode_params(struct EFR_encoder_state *st, const int16_t *pcm,
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29 int16_t *params, int *sp, int *vad);
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30 extern void EFR_encode_frame(struct EFR_encoder_state *st, const int16_t *pcm,
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31 uint8_t *frame, int *sp, int *vad);
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33 /* decoder public functions */
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35 extern void EFR_decode_params(struct EFR_decoder_state *st,
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36 const int16_t *params, int bfi, int sid, int taf,
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37 int16_t *pcm);
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38 extern void EFR_decode_frame(struct EFR_decoder_state *st, const uint8_t *frame,
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39 int bfi, int taf, int16_t *pcm);
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40 extern void EFR_decode_bfi_nodata(struct EFR_decoder_state *st, int taf,
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41 int16_t *pcm);
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43 /* stateless utility functions */
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45 extern int EFR_sid_classify(const uint8_t *frame);
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46 extern void EFR_frame2params(const uint8_t *frame, int16_t *params);
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47 extern void EFR_params2frame(const int16_t *params, uint8_t *frame);
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48 extern void EFR_insert_sid_codeword(uint8_t *frame);
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50 #endif /* include guard */