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view libgsmfr2/pp_internal.h @ 624:fd35fd05bc8b

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libgsmhr1/sp_frm.[ch]: constify some function arguments Speech encoder main function calls filt4_2nd(), which in turn calls iir_d(). A pointer comes from a "ROM" table, hence const.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 12 Mar 2026 03:53:21 +0000
parents 573afa985df6
children
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/*
 * This header file is internal to libgsmfr2; it contains declarations
 * of internal functions for the Rx DTX preprocessor component.
 */

extern void gsmfr_preproc_gen_cn(struct gsmfr_preproc_state *state,
				 uint8_t *frame);
extern void gsmfr_preproc_sid2cn(struct gsmfr_preproc_state *state,
				 uint8_t *frame);
extern void gsmfr_preproc_invalid_sid(struct gsmfr_preproc_state *state,
				      uint8_t *frame);
extern uint16_t gsmfr_preproc_prng(struct gsmfr_preproc_state *state,
				   uint16_t no_bits);
extern uint8_t gsmfr_preproc_xmaxc_mean(const uint8_t *frame);