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annotate libgsmfrp/gsm_fr_preproc.h @ 237:e4a4bf11f37c

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doc/PCM8-conversions: document command line utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 08 May 2023 04:29:05 +0000
parents 2b5770c715ee
children
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6780b23654bd libgsmfrp: starting with the silence frame
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1 /*
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2 * This header file is the external public interface to libgsmfrp;
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3 * it should be installed in the same system include directory
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4 * as <gsm.h> from libgsm, on which we depend.
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5 */
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7 #ifndef __GSM_FR_PREPROC_H
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8 #define __GSM_FR_PREPROC_H
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10 #include <gsm.h>
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12 struct gsmfr_preproc_state; /* opaque to external users */
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14 extern struct gsmfr_preproc_state *gsmfr_preproc_create(void);
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15 /* use standard free() call to free it afterward */
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17 /* reset state to initial */
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18 extern void gsmfr_preproc_reset(struct gsmfr_preproc_state *state);
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20 /* main processing functions */
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21 extern void gsmfr_preproc_good_frame(struct gsmfr_preproc_state *state,
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22 gsm_byte *frame);
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23 extern void gsmfr_preproc_bfi(struct gsmfr_preproc_state *state, int taf,
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24 gsm_byte *frame_out);
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26 /* utility function */
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27 extern int gsmfr_preproc_sid_classify(const gsm_byte *frame);
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29 /* utility datum */
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30 extern const gsm_frame gsmfr_preproc_silence_frame;
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32 #endif /* include guard */