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annotate libtwamr/a_refl.h @ 466:0c4e1bc06740

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amrefr-encode-r: use the new DHF xform that matches T-Mobile
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 12 May 2024 21:44:59 +0000
parents 54f6bc41ed10
children
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54f6bc41ed10 libtwamr: integrate a* modules
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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 : a_refl.h
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11 * Purpose : Convert from direct form coefficients to
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12 * reflection coefficients
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13 *
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14 ********************************************************************************
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15 */
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16 #ifndef a_refl_h
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17 #define a_refl_h "$Id $"
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18
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19 /*
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20 ********************************************************************************
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21 * INCLUDE FILES
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22 ********************************************************************************
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23 */
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24 #include "typedef.h"
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25
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26 /*
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27 ********************************************************************************
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28 * DEFINITION OF DATA TYPES
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29 ********************************************************************************
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30 */
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31
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32 /*
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33 ********************************************************************************
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34 * DECLARATION OF PROTOTYPES
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35 ********************************************************************************
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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 * FUNCTION: A_Refl()
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41 *
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42 * PURPOSE: Convert from direct form coefficients to reflection coefficients
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43 *
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44 * DESCRIPTION:
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45 * Directform coeffs in Q12 are converted to
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46 * reflection coefficients Q15
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47 *
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48 *************************************************************************/
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49 void A_Refl(
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50 Word16 a[], /* i : Directform coefficients */
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51 Word16 refl[] /* o : Reflection coefficients */
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52 );
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53
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54 #endif