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view libtwamr/if1_func.h @ 477:4c9222d95647

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libtwamr encoder: always emit frame->mode = mode; In the original implementation of amr_encode_frame(), the 'mode' member of the output struct was set to 0xFF if the output frame type is TX_NO_DATA. This design was made to mimic the mode field (16-bit word) being set to 0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends on this struct member being set in any way, and amr_frame_to_tseq() generates the needed 0xFFFF on its own, based on frame->type being equal to TX_NO_DATA. It is simpler and more efficient to always set frame->mode to the actual encoding mode in amr_encode_frame(), and this new behavior has already been documented in doc/AMR-library-API description in anticipation of the present change.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 18 May 2024 22:30:42 +0000
parents ebe499058c63
children
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/*
 * This header file provides prototype declarations for AMR IF1
 * packing and unpacking functions, as well as extern declarations
 * for the set of const data tables they need.
 */

#ifndef	if1_func_h
#define	if1_func_h

#include <stdint.h>
#include "tw_amr.h"
#include "typedef.h"

void if1_pack_bytes(enum Mode mode, const Word16 *serial_bits,
		    uint8_t *if1_bytes);
void if1_unpack_bytes(enum Mode mode, const uint8_t *if1_bytes,
		      Word16 *serial_bits);

extern const uint8_t sort_475[95];
extern const uint8_t sort_515[103];
extern const uint8_t sort_59[118];
extern const uint8_t sort_67[134];
extern const uint8_t sort_74[148];
extern const uint8_t sort_795[159];
extern const uint8_t sort_102[204];
extern const uint8_t sort_122[244];

#endif	/* include guard */