FreeCalypso > hg > gsm-codec-lib
view libtwamr/d3_14pf.h @ 477:4c9222d95647
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 | f4a5545ea8b2 |
children |
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/* ******************************************************************************** * * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 * R99 Version 3.3.0 * REL-4 Version 4.1.0 * ******************************************************************************** * * File : d3_14pf.h * Purpose : Algebraic codebook decoder * ******************************************************************************** */ #ifndef d3_14pf_h #define d3_14pf_h "$Id $" /* ******************************************************************************** * INCLUDE FILES ******************************************************************************** */ #include "typedef.h" /* ******************************************************************************** * LOCAL VARIABLES AND TABLES ******************************************************************************** */ /* ******************************************************************************** * DEFINITION OF DATA TYPES ******************************************************************************** */ /* ******************************************************************************** * DECLARATION OF PROTOTYPES ******************************************************************************** */ /************************************************************************* * * FUNCTION: decode_3i40_14bits (decod_ACELP()) * * PURPOSE: Algebraic codebook decoder for 3 pulses coded with 14 bits * *************************************************************************/ void decode_3i40_14bits( Word16 sign, /* i : signs of 3 pulses. */ Word16 index, /* i : Positions of the 3 pulses. */ Word16 cod[] /* o : algebraic (fixed) codebook excitation */ ); #endif