FreeCalypso > hg > gsm-codec-lib
view libtwamr/q_plsf.h @ 472:d80ccb3c3970
gsmefr-dlcap-sync: use DHF datum in the library
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 14 May 2024 07:30:48 +0000 |
parents | 4a8cabac281e |
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 : q_plsf.h * Purpose : common include file for LSF vector/matrix quanti- * sation modules (q_plsf_3.c/q_plsf_5.c) * ******************************************************************************** */ #ifndef q_plsf_h #define q_plsf_h "$Id $" /* ******************************************************************************** * INCLUDE FILES ******************************************************************************** */ #include "tw_amr.h" #include "typedef.h" #include "cnst.h" /* ******************************************************************************** * DEFINITION OF DATA TYPES ******************************************************************************** */ typedef struct { Word16 past_rq[M]; /* Past quantized prediction error, Q15 */ } Q_plsfState; /* ******************************************************************************** * DECLARATION OF PROTOTYPES ******************************************************************************** */ void Q_plsf_reset (Q_plsfState *st); /* reset of state (i.e. set state memory to zero) returns 0 on success */ void Q_plsf_3( Q_plsfState *st, /* i/o: state struct */ enum Mode mode, /* i : coder mode */ Word16 *lsp1, /* i : 1st LSP vector Q15 */ Word16 *lsp1_q, /* o : quantized 1st LSP vector Q15 */ Word16 *indice, /* o : quantization indices of 3 vectors Q0 */ Word16 *pred_init_i /* o : init index for MA prediction in DTX mode */ ); void Q_plsf_5 ( Q_plsfState *st, Word16 *lsp1, /* i : 1st LSP vector, Q15 */ Word16 *lsp2, /* i : 2nd LSP vector, Q15 */ Word16 *lsp1_q, /* o : quantized 1st LSP vector, Q15 */ Word16 *lsp2_q, /* o : quantized 2nd LSP vector, Q15 */ Word16 *indice /* o : quantization indices of 5 matrices, Q0 */ ); #endif