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annotate libtwamr/q_plsf.c @ 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 4a8cabac281e
children
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4a8cabac281e libtwamr: integrate q_plsf.c
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1 /*
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2 ********************************************************************************
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3 *
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
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5 * R99 Version 3.3.0
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6 * REL-4 Version 4.1.0
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7 *
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8 ********************************************************************************
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9 *
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10 * File : q_plsf.c
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11 * Purpose : common part (init, exit, reset) of LSF quantization
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12 * module (rest in q_plsf_3.c and q_plsf_5.c)
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13 *
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14 ********************************************************************************
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15 */
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16
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17 /*
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18 ********************************************************************************
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19 * MODULE INCLUDE FILE AND VERSION ID
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20 ********************************************************************************
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21 */
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22 #include "namespace.h"
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23 #include "q_plsf.h"
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24
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25 /*
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26 ********************************************************************************
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27 * INCLUDE FILES
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28 ********************************************************************************
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29 */
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30 #include "typedef.h"
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31 #include "basic_op.h"
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32
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33 /*
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34 ********************************************************************************
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35 * PUBLIC PROGRAM CODE
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36 ********************************************************************************
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37 */
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38
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39 /*
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40 **************************************************************************
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41 *
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42 * Function : Q_plsf_reset
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43 * Purpose : Resets state memory
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44 *
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45 **************************************************************************
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46 */
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47 void Q_plsf_reset (Q_plsfState *state)
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48 {
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49 Word16 i;
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50
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51 for ( i = 0; i < M; i++)
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52 state->past_rq[i] = 0;
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53 }